Because of its broad market prospect of relatively high car penetration rate in Europe and America, it has attracted many domestic cross-border manufacturers to sell in the United States. China's products are cost-effective, and the market share of NOCO, a traditional American emergency power supply giant, has been eroded. In addition, under the background of Sino-US trade conflict in recent years, NOCO filed 337 lawsuits against companies including dozens of China manufacturers on the grounds of unfair competition behaviors such as infringement of intellectual property rights. Due to the large number of enterprises involved, from production to terminal sales are listed as defendants. This case can be called a nuclear bomb-level 337 investigation in the industry.
? Parent case of patent family involved: US9,007,015? Portable vehicle battery jump starting device with safety protection
? Most of the defendants are China manufacturers, especially Shenzhen enterprises;
70mai Limited ATD Tools, Inc.Advance Auto Parts, Inc. Anker Innovations Ltd. Anker Technology (UK) Ltd. Anker Technology Co., Ltd. Anti-gravity battery LLCArteck Electronics Co., Ltd. Aukey Technology Co., Ltd. AutoZone, Inc.Autogen Technology Co., Ltd. Baccus Global LLCBest Buy Co., Ltd. Best Parts, Inc.CarAIDE USAChao Fung Trading Co., Ltd. Circus Link, Inc.Clore Automotive, LLCDeltona deltran USA, LLCDongguan Boltpower Ecological Life Co., Ltd.Energen, Inc. flylink tech co., ltd. original parts company Gooloo Technologies LLC Shenzhen Gooloo e-commerce co., ltd. Great Neck Global, Inc. (Taiwan Province) Great Neck Saw Manufacturers, Inc. Guangdong Boltpower Energy Co., Ltd. Guangdong Marcel Electric Vehicle Co., Ltd. Guangzhou Aoteli Electronic Technology Co., Ltd. Guangzhou Unique Electronics Co., Ltd. Hairishen Electric (Shenzhen) Co., Ltd. Halo2Cloud, LLCHorizon Tool, Inc. Huizhou Grepro E-commerce Huizhou Royp Technology Co., Ltd., Hunan Porteway New Energy Co., Ltd. Integrated Supply Network, LLC Jiashi Battery Industry Co., Ltd., K-Tool International. Vietnam Lelong Co., Ltd. Medcursor, Inc.MigOwatt Group LLC (Russian agent). Mizco International，Inc.MonoPrice，Inc . National Automotive Parts Association，LLC (d/b/a NAPA)。 Nekteck, Inc.Nex Digitronix LLPNice Team Enterprise Co., Ltd. Nice Well Enterprise Co., Ltd. Ningbo Zenon Electric Co., Ltd. Ningo Geostar Electronics Co., Ltd. O'Reilly Automotive, Inc. Paris Company Vibrant Boy. PowerMax Battery (U.S.A), Inc.Prime Global Products, Inc.QVC Company Sam's East, Inc. (d/b/a Sam's Club)Sam's West, Inc. (d/b/a Sam's Club). Schumacher Electric Company Schumacher Power Technology Co., Ltd. Shenzhen Aojie Technology Co., Ltd. Shenzhen Benrong Technology Co., Ltd. Shenzhen Kaku Technology Co., Ltd. Shenzhen Chick Electric. Shenzhen dingjiang technology co., ltd. Shenzhen Gelimei Technology Co., Ltd. Shenzhen Gu Lin Power Technology Co., Ltd. Shenzhen Jiahongjing Technology Co., Ltd. Shenzhen Qi Jie Digital Technology Co., Ltd. Shenzhen Jerry Jia Technology Co., Ltd. Shenzhen Lifeng Trading Co., Ltd. Shenzhen Lianfutong Technology Co., Ltd. Shenzhen Lianke Electronic Technology Co., Ltd. Shenzhen MediaTek Tong Technology Co., Ltd. Shenzhen Muke Technology Co., Ltd. Shenzhen Trading Co., Ltd. Shenzhen Cheng Pu Future Technology Shenzhen Shennai E-Commerce Co., Ltd. Shenzhen Take Tools Co., Ltd. Shenzhen Topton Technology Co., Ltd. Shenzhen Valuelink E-Commerce Co., Ltd. Shenzhen Weige Power Battery Co., Ltd. Company d/b/a Fconergy Co., Ltd. Shenzhen Winplus Technology Co., Ltd. Shenzhen Xinzexing E-commerce Shenzhen Yike Electronics Co., Ltd., Sitek Instrument Co., Ltd., Siwei International Development Co., Ltd. Smart products company. Dacker Precision Manufacturing (Shenzhen) Co., Ltd.; Dacker Co., Ltd. Substanbo Innovation Technology Co., Ltd. Sun Tech Co., Ltd. Sunluxe Mfg. Limited (Vietnam). Tianyan Technology Co., Ltd. Tianyan Trading Co., Ltd. Wal-Mart Stores Co., Ltd. Wal-Mart Co., Ltd. Weimar Company. Yuyao Cohen new energy co., ltd. Zagg company Zhejiang qingyou electronic commerce co., ltd.
technical background
First of all, the IDS (Information Disclosure Statement) of 0 15 patent in the background fully discusses the evolution route of automobile emergency start power supply technology:
1.us 6,212,054 released on April 3, 2006.
? The invention discloses an anti-reverse-connection battery booster, which can detect whether the polarity of an alligator clip is connected correctly before the battery is electrified. The device uses a set of unidirectional light emitting diodes, which are connected to an optical coupler controlled by a circuit. Only when the polarity connection is correct, the control circuit makes the current flow through the solenoid assembly.
As shown in the above figure, the core invention of the 054 patent is to detect whether the crocodile clamp polarity of the output current is correctly connected through optical coupling isolation.
2. us 6,632, 103, released on 10/4, 2003.
An adaptive polarity conversion cable is disclosed, which is connected with two pairs of clamps, wherein the two pairs of clamps are respectively connected to two batteries to transmit power from one battery to the other. The adaptive cable includes a polarity detection unit connected to each clip, a switch unit arranged between two pairs of clips and a current detection unit. After the polarity detection unit senses the polarity of the power supply connected to the end of each clip to be discharged, the switching unit generates an appropriate charging loop between the two batteries.
As shown in the above figure, the core invention of the 103 patent lies in the polarity adaptive switching circuit consisting of a current detection unit and two polarity switching transistors.
3. US 8,493,021was released on July 23rd, 1965.
Disclosed is an apparatus that monitors the voltage of a battery of a vehicle to be started and the current delivered by the starting battery to determine whether a correct connection has been established, and provides fault monitoring. Only when the correct polarity is detected can the system run. Monitor the voltage to determine the open circuit state, broken conductive clip, shunt branch fault and inductance fault. Monitor the current passing through the shunt branch to judge whether there is a danger of battery explosion or overheating caused by excessive current. The system includes an internal battery to provide power to the vehicle battery to be started. After the vehicle is started, the device will automatically disconnect the power supply of the vehicle battery.
As shown in the above figure, the core invention of 02 1 patent lies in real-time monitoring of the starting power state through the system main control chip.
4.1US5,189,359 released on February 23rd, 993.
Disclosed is a starting circuit having two bridge rectifiers for generating a reference voltage, a four-input decoder for determining that a terminal to be connected is connected to the reference voltage based on the voltage comparison of each of four terminals, and a pair of relays for realizing correct connection according to the determination of the decoder. Unless only one terminal of each battery has a voltage higher than the reference voltage, indicating a "positive" terminal, and the voltage of one battery is lower than the reference voltage, indicating a "negative" terminal, the connection will not be established. You can connect two high-voltage terminals or two low-voltage terminals. Once the corresponding relay device is closed, the current will flow. The relay device is preferably a MOSFET and a series of photodiode arrays. When the decoder output causes the LED to emit light, the photodiode array will generate a MOSFET gate turn-off bit.
As shown in the above figure, the core invention of the 359 patent is to control the startup circuit by comparing the voltages of the batteries connected at both ends of the startup circuit to form a binary value, and then passing through a four-bit decoder pair.
5. U.S. Pat. No.5,795, 182 was published in August 2008 1998.
A set of battery jumpers independent of battery polarity is disclosed for jumping a first battery to a second battery. The apparatus includes a relative polarity detector for detecting whether two batteries are arranged in a cross structure or a parallel structure. The pivot switch of that three-phase high current capacity crossbar switch respond to the relative polarity detector to automatically connect the positive terminals of two battery and the negative terminals of two batteries together, regardless of whether the detect configurations are crossed or parallel. An under-current detector and a delay circuit for returning the device to a ready state and an unconnected state after disconnecting the device from one of the batteries. The vertical and horizontal pivot switch includes two pairs of contacts and a pivot arm that pivots around two independent points to ensure complete electrical contact between the two pairs of contacts. The present invention can also be used to manufacture a battery charger which can be connected to a battery regardless of the polarity of the battery.
As shown in the above figure, the core invention of 182 patent is to realize the automatic switching of battery jumper polarity by controlling the angle transformation of three-phase solenoid valve.
6.6,262,492 USD was issued on July 6-7, 2006.
Disclosed is an automobile battery jumper circuit for accurately coupling an effective power supply to a faulty or uncharged battery, which includes a relay switch circuit connected to the power supply and the battery through two current conductor pairs. The first and second voltage polarity identification circuits are respectively connected to the power supply and the battery through corresponding voltage conductor pairs to identify the polarities of the power supply and the battery. The logic identification circuit generates control signals according to the polarities of the power supply and the battery, and the driving circuit controlled by the control signals from the logic identification circuit drives the relay switch circuit, so that the two poles of the power supply are accurately coupled to the two poles of the battery.
? As shown in the above figure, the core invention of the' 492 patent is to form a logic identification circuit to drive the relay and automatically couple the polarity of the battery, thus achieving the effect of preventing reverse connection.
7.1U.S. Pat. No.5,635,817 released on June 3, 997.
A vehicle battery charging device is disclosed, which includes a control box, and a cable of the control box includes a current limiting device to prevent a predetermined maximum charging current from exceeding about 40 to 60 amperes. The control box includes a polarity detection device to verify whether the polarities of the terminal connections of the two batteries are correct, and if the polarities are incorrect, disconnect the electrical connection of the two batteries.
As shown in the above figure, the core invention of the 8 17 patent is to achieve the effect of preventing reverse connection through the switch of the solenoid valve.
8.US8,199,024 was released on June 2, 1965.
A safety circuit in a low-voltage connection system is disclosed, which keeps two low-voltage systems disconnected until it is determined that they can be safely connected. When the safety circuit determines that there is no unsafe condition and two low-voltage systems can be safely connected, the safety circuit can connect the two systems through the "soft start" function, which provides a connection between the two systems through the "soft start". Reduce or prevent the time period of induced voltage spikes on one or more low-voltage systems. When a fully discharged battery is installed in a low-voltage system, a method will be used to detect the correct polarity of the connection between the low-voltage systems. The polarity of a discharged battery is determined by delivering one or more test currents and determining whether a corresponding voltage rise is observed.
As shown in the above figure, the core invention of the 024 patent is to set the circuit security strategy through the main control chip to achieve the effect of anti-reverse connection and overvoltage protection.
9. US 5,793, 185 was published in August 2008.
The following figure discloses a hand-held starting power supply with control components and circuits to prevent overcharging and incorrect connection of battery polarity.
Patent 0 15 extracts the following technical defects from the above-mentioned IDS prior art documents: complexity (excessive complexity), cost or potential failure (high cost and risk of misoperation).
Next, the 0 15 patent clearly puts forward the technical contribution to solve the above problems:
? "Using these specific inputs, microcontroller software of single chip microcomputer? 1? It can be determined when it is safe to turn on the intelligent switching FET. 15 to connect the lithium battery pack to the jumper terminal of the booster. So, if the car battery? 72? Either don't connect the booster device at all, or connect the reverse polarity, MCU? 1? Can keep the intelligent switch FET? 15? Prevent ignition/short circuit of lithium battery pack.
? (Using these specific inputs, the microcontroller software of MCU 1 can determine when it is safe to turn on the intelligent switch FET 15, thus connecting the lithium battery pack to the jumper terminal of the booster device. Therefore, if the automobile battery 72 is not connected to the booster device at all, or the polarity is opposite, the MCU 1 can keep the intelligent switch FET 15 on, thus preventing the lithium battery from being short-circuited. )
From the above description of the technical effects, it can be seen that the 0 15 patent provides a redundant safety detection scheme to prevent the short circuit of the battery inside the starting power supply in addition to the strategies of anti-reverse connection and overvoltage protection disclosed in IDS, which seems to be realized by circuit hardware, but in fact, the software control logic forms a unique concept and technical contribution of the invention.
In order to achieve the above technical objectives, we will analyze the technical scheme in 0 15 patent claim:
Claim 1 (translated):
? An apparatus for starting an engine of a vehicle includes an internal power supply;
? An output port having a positive output and a negative output;
A vehicle battery isolation sensor connected to the positive and negative output circuits for detecting the presence of a vehicle battery connected between the positive and negative outputs;
A reverse polarity sensor connected to the positive output circuit and the negative output circuit and configured to detect the polarity of the vehicle battery connected between the positive output terminal and the negative output terminal and provide an output signal indicating whether the positive terminal and the negative terminal of the vehicle battery are correctly connected;
A power switch connected between the internal power supply and the output port; and
? A microcontroller configured to receive input signals from a vehicle isolation sensor and a reverse polarity sensor, and provide an output signal to a power switch in response to signals from the sensor indicating that a vehicle battery exists at the output port and that positive and negative terminals of the vehicle battery are connected with correct polarities of the positive and negative outputs, so that the power switch is turned on to connect an internal power supply to the output port, and when the signals from the sensor indicate that there is no vehicle battery at the output port or that the positive and negative terminals of the vehicle battery are incorrectly connected with polarities of the positive and negative outputs, the power switch is not turned on.
Circuit module diagram:
? Isolate the sensor and reverse the polarity of the detailed circuit diagram of the sensor and the high and low levels in different states;
Through the analysis of the logic and circuit module of the claim, we can draw the following conclusions:
Independent power demand is essentially a literal description of the control strategy of the main control chip, and we can also analyze the truth table of the control logic of the main control chip:
Isolation =0, anti-reflection = 1, main control chip =1;
Isolation = 1, anti-reflection = 1, main chip = 0;
Isolation = 1, anti-reflection =0, main chip = 0;
Isolation =0, anti-reflection =0, main control chip =0.
It can be seen that the real core invention of 0 15 patent is that the main control chip carries out security policy detection (redundant security policy to prevent short circuit of internal power supply) before executing the startup function to ensure safety. This modular circuit design scheme well solves the technical defects of "high complexity and easy misoperation" in the prior art mentioned in the above technical problems.
0 15 patent not only isolates the sensor and the anti-reflection circuit, but also puts the details of the power switch circuit into the patent, which plays a good role in explaining and supporting the modular exclusive right:
It can be seen from this that the technical effect produced by the exclusive technical scheme of 0 15 patent has a very good solution to the technical problems in the background technology, and the logical closed loop of the corresponding means and purposes has played a decisive role in the success of the patent.
To sum up, we can see that when writing the layout of electronic circuit patents, we should pay attention to the following points:
1. First of all, you need to have a deep background in electronic circuit technology;
2. Secondly, it is necessary to accurately extract the technical problems to be solved through in-depth investigation and analysis of the background technology;
3. The technical solution described in the claim should be able to solve the technical problems raised in the background technology, that is, the technical background-technical problems-technical solutions-technical effects form a logical closed loop;