WO2022267828A1

WO2022267828A1 - Connector of storage battery and detection system and method for storage battery

Info

Publication number: WO2022267828A1
Application number: PCT/CN2022/095747
Authority: WO
Inventors: 王维林
Original assignee: 深圳市道通科技股份有限公司
Priority date: 2021-06-24
Filing date: 2022-05-27
Publication date: 2022-12-29
Also published as: CN113484757A; CN113484757B

Abstract

A connector of a storage battery and a detection system and method for the storage battery. The connector (1) of the storage battery (5) comprises an upstream interface (10), a power module (20) connected to a power pin (101), a downstream connection unit (30), a signal transceiver (40), and a controller (50). The downstream connection unit (30) comprises a power connection (301), a control connection (302), and a communication connection (303). Both the power connection (301) and the control connection (302) are connected to the power module (20), and the communication connection (303) is connected to a communication pin (102). The communication connection (303) is configured to receive, by means of the communication pin (102), a detection signal sent by an automobile diagnostic instrument (2), and send the detection signal to a BMS (4), so that the BMS (4) obtains battery information of the storage battery (5) according to the detection signal. The communication connection (303) is configured to receive the battery information sent by the BMS (4), and send the battery information to the automobile diagnostic instrument (2), so that the automobile diagnostic instrument (2) detects the storage battery (5) according to the battery information. The controller (50) is configured to receive, by means of the signal transceiver (40), an activation signal sent by the automobile diagnostic instrument (2), and activate the BMS (4), so as to detect the storage battery (5) in an offline state.

Description

Battery connector, battery detection system and method

This application claims the priority of the Chinese patent application with the application number 202110704121.4 and the application title "connector for storage battery, detection system and method for storage battery" filed with China Patent Office on June 24, 2021, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the technical field of battery detection, in particular to a battery connector, a battery detection system and a method.

Background technique

New energy vehicles are vehicles powered by batteries, which generate power through batteries and do not pollute the environment. Therefore, new energy vehicles are developing more and more rapidly. The construction and maintenance of new energy vehicles are significantly different from traditional fuel vehicles. Among them, the maintenance of new energy vehicles is mainly the maintenance of three electrics (battery, motor, and electronic control), and the proportion of battery maintenance is very large. When the battery powered by the new energy vehicle is removed from the vehicle system, it needs to be diagnosed and analyzed before maintenance. Before the repaired battery is installed on the car, some verification or test run is also required for the battery, and only the battery that has passed the test run is allowed to be loaded into the car.

The detection method of the storage battery after the storage battery is installed on the vehicle includes connecting the vehicle communication interface equipment through the vehicle diagnostic instrument, and connecting the vehicle system through the vehicle communication interface equipment, so as to realize the detection of the storage battery incorporated into the vehicle system. The battery that is not installed in the vehicle system is in an offline state. With the development of new energy vehicles, it is necessary to perform performance testing on the battery in the offline state, that is, offline testing.

However, when the battery is offline, performance testing of the battery cannot be performed in the prior art.

Contents of the invention

In view of the above problems, the embodiments of the present application provide a battery connector, a battery detection system and a method, aiming at solving the problem that the battery cannot be tested for performance when the battery is offline.

In order to achieve the above purpose, in the first aspect, the present application provides a battery connector for connecting a vehicle diagnostic instrument and a BMS, the battery connector includes: an upstream interface, which is provided with power pins and communication pins, The power supply pin is used to connect with the vehicle diagnostic instrument, the communication pin is used to connect with the vehicle diagnostic instrument; the power supply module is connected to the power supply pin, and is used to supply power to the power supply pin The downstream connection unit includes a power connector, a control connector and a communication connector, the power connector, the control connector and the communication connector are respectively used to connect with the BMS, and the power connector and the control connector are both Connected to the power module, the communication connector is connected to the communication pin, and the communication connector is used to receive the detection signal sent by the automotive diagnostic instrument through the communication pin, and transmit the detection signal sent to the BMS, so that the BMS obtains the battery information of the storage battery according to the detection signal, and the communication connection part is used to receive the battery information sent by the BMS, and transmit the battery information through the communication pin to The battery information is sent to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery according to the battery information; the signal transceiver is connected to the communication pin; the controller is connected to the power module respectively , the signal transceiver is connected to the control connector, the controller is used to receive the activation signal sent by the vehicle diagnostic instrument through the signal transceiver, and activate the BMS through the control connector according to the activation signal.

In an optional manner, the connector of the storage battery further includes a control switch, the power connector is connected to the power module and the controller through the control switch, and the control connector is connected to the controller through the control switch. Connect with the power module and controller.

In an optional manner, the control switch includes a first switch unit, the power connector is connected to the power module and the controller through the first switch unit, and the power connector is also used to communicate with the The BMS is connected, and the controller is used to control the opening or closing of the first switch unit to implement power supply or power failure to the BMS.

In an optional manner, the control connector includes an activation connector; the control switch includes a second switch unit, and the activation connector is connected to the power module and the controller through the second switch unit The activation connector is also used to connect with the BMS, and the controller controls the second switch unit to activate the BMS.

In an optional manner, the controller is further configured to receive an interlock signal sent by the vehicle diagnostic instrument through the signal transceiver, and the control connector includes an interlock connector; the control switch is also It includes a third switch unit, the interlock connection is connected to the controller through the third switch unit, the interlock connection is also used to connect with the BMS, and the controller controls the first Three switch units, so that the interlock connector can output the interlock signal to the BMS.

In an optional manner, the first switch unit, the second switch unit and the third switch unit are all relays.

In an optional manner, the power connectors, the control connectors and the communication connectors are all standard interfaces or wires.

In an optional manner, the number of communication pins and communication connectors is three groups, and one communication connector is connected to one communication pin; wherein, two groups of communication pins and communication The connectors are used to transmit CAN signals or FlexRay signals, and the remaining set of communication pins and communication connectors are used to transmit LIN signals or K-Line signals.

In an optional manner, the upstream interface is an OBD interface.

In a second aspect, the present application provides a battery detection system, including a vehicle diagnostic instrument and the above-mentioned battery connector; the upstream interface of the battery connector is connected to the vehicle diagnostic instrument, and the battery connector The downstream connection unit is used to connect with the BMS.

In a third aspect, the present application provides a battery detection method, which is applied to the above-mentioned battery connector. The method includes: receiving an activation signal sent by a vehicle diagnostic instrument; activating the BMS according to the activation signal; receiving the A detection signal sent by the vehicle diagnostic instrument; sending the detection signal to the BMS, so that the BMS obtains the battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal; receiving The battery information sent by the BMS; sending the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery.

The beneficial effects of the embodiments of the present application are: a battery connector is provided, and the battery connector is provided with a power module, so that the vehicle diagnostic instrument connected to the upstream interface can be powered through the upstream interface, and the offline connection unit can be used to supply power to the vehicle diagnostic instrument connected to the upstream interface. The battery under the condition of the battery supplies power, the connector of the battery can receive the activation signal sent by the vehicle diagnostic instrument, and activate the BMS according to the activation signal, and the connector of the battery can receive the detection signal sent by the vehicle diagnostic instrument , and send the detection signal to the BMS, so that the BMS obtains the battery information of the storage battery according to the detection signal, and the connector of the storage battery can also send the battery information to the vehicle diagnostic instrument for The vehicle diagnostic instrument is made to detect the storage battery according to the battery information, so as to realize the detection of the storage battery in an offline state.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute a limitation to the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the drawings are not limited to scale.

FIG. 1 is a schematic diagram of a battery detection system provided in an embodiment of the present application applied to a battery;

Fig. 2 is a schematic diagram of the detection system of the storage battery provided by the embodiment of the present application and the connection with the storage battery;

Fig. 3 is a schematic diagram of a battery connector provided in an embodiment of the present application;

Fig. 4 is a schematic diagram of the connector of the storage battery provided by the embodiment of the present application connected with wires;

Fig. 5 is a flow chart of a detection method for a battery provided in an embodiment of the present application;

Fig. 6 is a flow chart of another battery detection method provided by the embodiment of the present application;

Fig. 7 is a schematic diagram of a battery detection device provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of a hardware structure of a controller in a battery connector provided by an embodiment of the present application.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that when an element is said to be "fixed" to another element, it may be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions are used in this specification for the purpose of description only.

In addition, the technical features involved in the various embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

Please refer to Fig. 1, the detection system of accumulator comprises: the connector 1 of accumulator for accumulator 5, vehicle diagnostic instrument 2 and VCI equipment 3, the connector 1 of described accumulator is connected with described automotive diagnostic instrument by described VCI equipment 3 2 connections. The connector 1 of the storage battery is also used to connect with the battery management system 4 (Battery Management System, BMS 4). The BMS 4 is used to be connected with the storage battery 5. The battery connector 1 is used to supply power to the VCI device 3 and the battery 5 . The vehicle diagnostic instrument 2 is used for sending activation signals and detection signals. The battery connector 1 is used for receiving the activation signal and detection signal through the VCI device 3 . The connector 1 of the storage battery is also used to activate the BMS 4 according to the activation signal. The connector 1 of the storage battery is also used to send the detection signal to the BMS 4, so that the BMS 4 obtains the battery information of the storage battery 5 according to the detection signal. The battery connector 1 is also used to receive the battery information and send the battery information to the vehicle diagnostic instrument 2 . The vehicle diagnostic instrument 2 is also used to detect the battery 5 according to the battery information.

Wherein, the VCI is a vehicle communication interface (Vehicle Communication Interface, VCI), which is used for connecting the battery connector 1 and the vehicle diagnostic instrument 2.

It is worth noting that, in some embodiments, the VCI device 3 may not be provided, and the connection between the battery connector 1 and the vehicle diagnostic instrument 2 may also be realized.

For the above-mentioned vehicle diagnostic instrument 2, the vehicle diagnostic instrument 2 is a tool for detecting each component in the automobile, and can realize multiple vehicle detection functions, such as the detection function for activating the BMS 4 of the storage battery 5, such as the detection of the performance of the storage battery 5 detection function.

The vehicle diagnostic instrument 2 is located on the side of the user and is used for interacting with the user. In the vehicle diagnostic instrument 2, one or more input/output devices are provided, such as display screens, buttons, touch screens, etc., which display the detection functions that can be provided to the user through the input/output devices. By performing a trigger operation on the function to be detected on the output device, the vehicle diagnostic instrument 2 can receive the trigger operation including the function to be detected. Wherein, the trigger operation may be an action command such as click, double click, press, slide, and long press.

For the above VCI device 3 , one end of the VCI device 3 is provided with a communication interface connected to the vehicle diagnostic instrument 2 , and the other end of the VCI device 3 is provided with a communication interface or pins connected with the battery connector 1 . The VCI device 3 is used for the connection between the battery connector 1 and the vehicle diagnostic instrument 2 , and the VCI device 3 is used for the conversion of the communication protocol and the information sending and receiving control between the battery connector 1 and the vehicle diagnostic instrument 2 .

In some embodiments, the VCI device 3 supports CAN signals, FlexRay signals, LIN signals or K-Line signals.

In some embodiments, the VCI device 3 is also used to match the impedance of the detection system of the storage battery 5 , for example, to match the connector 1 of the storage battery with a resistance of 60 ohms or 120 ohms.

It can be understood that, in some embodiments, the VCI device 3 can be integrated in the connector 1 of the battery, so as to realize the direct connection between the vehicle diagnostic instrument 2 and the connector 1 of the battery, or connect the battery connector 1 through other transfer devices. The connector 1 is connected with the vehicle diagnostic instrument 2 , so that the detection system of the battery 5 does not need the VCI device 3 and can still realize the connection between the battery connector 1 and the vehicle diagnostic instrument 2 .

For the connector 1 of the storage battery, the connector 1 of the storage battery is used for connecting the vehicle diagnostic instrument 2 with the BMS 4.

Wherein, the BMS 4 is the battery management system of the storage battery 5. Described BMS 4 is connected with accumulator 5. The BMS 4 is used to obtain the voltage, temperature, battery capacity and charge and discharge state of the battery 5. The storage battery 5 includes a plurality of battery cells 51, each battery cell 51 is connected to a collector 52 (Battery Information Collector, BIC 52), and the collector 52 is connected to the BMS 4, and the collector 52 is used to collect the battery information collector 52. The collector 52 is also used to send the collected voltage, temperature, battery capacity and charge and discharge status of the storage battery 5 to the BMS. The collector 52 may be integrated with the battery unit 51 to form the storage battery 5, or it may be arranged outside the storage battery 5, which is not specifically limited in this application.

In some embodiments, the communication between the collector 52 and the BMS 4 is carried out through CAN signals.

The BMS 4 is also used to manage the charging and discharging of the storage battery 5, for example, managing the charging and discharging power of the storage battery 5, managing the charging and discharging duration of the storage battery 5, regulating and controlling the temperature of the storage battery 5 during charging and discharging, and managing the charging and discharging time of the storage battery 5. Start or stop, etc.

The BMS 4 is also used to control the high-voltage line 6 connected to the battery 5.

Referring to FIG. 3 , the battery connector 1 includes: an upstream interface 10 , a power module 20 , a downstream connection unit 30 , a signal transceiver 40 , a controller 50 , a control switch 60 and an indicator light 70 . The upstream interface 10 is used to connect with the vehicle diagnostic instrument 2 . The upstream interface 10 is connected to the power module 20 . The downstream connection unit 30 is connected to the power module 20, the downstream connection unit 30 is connected to the upstream interface 10, and the downstream connection unit 30 is used to connect with the BMS 4. The downstream connection unit 30 is used to receive the detection signal sent by the vehicle diagnostic instrument 2 through the upstream interface 10, and send the detection signal to the BMS 4, so as to perform performance detection on the storage battery 5 and obtain battery information, wherein the battery information matches the detection signal. The downstream connection unit 30 is also used to send the battery information to the vehicle diagnostic instrument 2 through the upstream interface 10 . The signal transceiver 40 is connected to the upstream interface 10 . The controller 50 is connected to the power module 20, the signal transceiver 40 and the downstream connection unit 30, the controller 50 is used to receive the activation signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, and According to the activation signal, the BMS 4 is activated through the control connector 302, so that the BMS 4 receives the detection signal, and obtains battery information of the storage battery 5 according to the detection signal. The downstream connection unit 30 is connected to the power module 20 and the controller 50 through the control switch 60 . The indicator light 70 is connected with the controller 50, and the indicator light 70 is used to indicate the working state of the connector 1 of the storage battery.

The connector 1 of the storage battery is provided with a power supply module 20, so that it can supply power to the vehicle diagnostic instrument 2 connected to the upstream interface 10 through the upstream interface 10, and can supply power to the storage battery 5 in an offline state through the downstream connection unit 30. The connector 1 of the storage battery can receive the activation signal sent by the vehicle diagnostic instrument 2, and activate the BMS 4 according to the activation signal, the connector 1 of the storage battery can receive the detection signal sent by the vehicle diagnostic instrument 2, and The detection signal is sent to the BMS 4, so that the BMS 4 obtains the battery information of the storage battery 5 according to the detection signal, and the connector 1 of the storage battery can also send the battery information to the vehicle diagnostic instrument 2, The vehicle diagnostic instrument 2 detects the battery 5 according to the battery information, so as to realize the detection of the battery 5 in an offline state.

It is worth noting that the battery connector 1 may not be provided with the control switch 60 and the indicator light 70 , and the purpose of offline diagnosis of the battery 5 through the battery connector 1 may also be achieved.

For the above-mentioned upstream interface 10 , the upstream interface 10 includes a power pin 101 , a communication pin 102 and a ground pin 103 . The power pin 101 is used to connect with the power module 20 . The power supply pin 101 is used to directly connect with the vehicle diagnostic instrument 2 , or connect to the vehicle diagnostic instrument 2 through the VCI device 3 . The communication pin 102 is used to directly connect with the vehicle diagnostic instrument 2 , or connect to the vehicle diagnostic instrument 2 through the VCI device 3 . The communication pin 102 is also used to connect with the downstream connection unit 30 . One end of the ground pin 103 is connected to the power module 20 , the other end of the ground pin 103 is used to connect to the downstream connection unit 30 , and the ground pin 103 is also used for grounding.

It is worth noting that, generally, the upstream interface 10 is provided with a ground pin 103, but when the upstream interface 10 is not provided with the ground pin 103, the upstream interface 10 can also be connected to the power module 20, the vehicle diagnostic instrument 2, Functions of the VCI device 3 and the downstream connection unit 30 .

In some embodiments, the power pins 101, communication pins 102 and ground pins 103 all have pin numbers to distinguish them, thereby reducing the number of connections between the upstream interface 10 and the power module 20, the vehicle diagnostic instrument 2, and the VCI device. 3 or the probability that the downstream connection unit 30 makes an error when connecting. For example, power pin 101 is "pin16". For example, the communication pin 102 is "pin6/14", "pin12/13" or "pin7/15", etc. For example, ground pin 103 is "pin4/5".

In some embodiments, the upstream interface 10 is an OBD interface, and the OBD interface meets the standards of ISO 15031 and SAE J1962.

For the power module 20 mentioned above, the power module 20 is connected to the power pin 101 of the upstream interface 10 to supply power to the VCI device 3 or the vehicle diagnostic instrument 2 connected to the power pin 101 . The power module 20 is also connected to the downstream connection unit 30 to supply power to the battery 5 connected to the downstream connection unit 30 .

It can be understood that the power module 20 is also connected to an external power source.

In some embodiments, the power module 20 includes a DC-DC power manager, that is, a DC-to-DC power manager, for outputting 12V power to the power pin 101, and for outputting 12V power to the downstream connection unit 30 .

For the above-mentioned downstream connection unit 30 , signal transceiver 40 , controller 50 and control switch 60 , the downstream connection unit 30 includes a power connection 301 , a control connection 302 , a communication connection 303 and a ground connection 304 . The control connector 302 includes an activation connector 3021 , an interlock connector 3022 , a reserved connector 3023 and a universal connector 3024 . The signal transceiver 40 is connected to the communication pin 102 of the upstream interface 10 , and the signal transceiver 40 is connected to the controller 50 . The control switch 60 includes a first switch unit 601 , a second switch unit 602 , a third switch unit 603 and a fourth switch unit 604 .

It is worth noting that, generally, the downstream connection unit 30 is provided with a ground connection piece 304, however, the downstream connection unit 30 may not be provided with the ground connection piece 304, and the connection between the downstream connection unit 30 and the upstream connection unit in this application can also be realized. and the function of the controller 50.

It is worth noting that the control switch 60 may not be provided, and the control function of the controller 50 on the downstream connection unit 30 may also be realized.

The power connector 301 is connected to the power module 20 and the controller 50 through the first switch unit 601, the power connector 301 is also used to connect to the BMS 4, and the controller 50 is used to control The opening or closing of the first switch unit 601 realizes power supply or power failure to the BMS 4.

It can be understood that, in some embodiments, the controller 50 is configured to receive the power signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, and according to the power signal, control the first The switch unit 601 is turned on or off, so as to realize power supply or power failure to the BMS 4.

The activation connection 3021 in the control connection 302 is connected to the power module 20 and the controller 50 through the second switch unit 602, and the activation connection 3021 is also used to connect to the BMS 4, the The controller 50 is used to receive the activation signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, and according to the activation signal, control the second switch unit 602 and realize the activation through the activation connector 3021 Activate the BMS 4. For example, if the activation signal is a 12V high-voltage pulse, and the power module 20 outputs 12V power to the downstream connection unit 30, the controller 50 controls the second switch unit 602 to adjust the 12V power to 12V The high-voltage pulse is then input into the BMS 4 through the activation connector 3021, thereby activating the BMS 4. For another example, if the activation signal is 12V continuous high voltage, and the power module 20 outputs 12V power to the downstream connection unit 30, the controller 50 controls the second switch unit 602 to adjust the 12V power to 12V continuous high voltage, and then input the BMS 4 through the activation connector 3021, thereby activating the BMS 4.

Wherein, the activation signal is the activation signal matched with the BMS 4 obtained by the analysis of the vehicle diagnostic instrument 2 after obtaining the information of the BMS 4.

The interlock connection 3022 in the control connection 302 is connected to the power module 20 and the controller 50 through the third switch unit 603, and the interlock connection 3022 is also used to connect to the BMS 4, The controller 50 is used to receive the interlock signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, and control the third switch unit 603 according to the interlock signal, and through the interlock The lock connector 3022 outputs the interlock signal to the BMS 4.

Wherein, the number of the interlocking connectors 3022 is two, and the interlocking can be realized when the two interlocking connectors 3022 are short-circuited.

The reserved connection part 3023 in the control connection part 302 is connected to the power module 20 and the controller 50 through the fourth switch unit 604, and the reserved connection part 3023 is also used to connect with the BMS 4, The controller 50 is used to receive the first undefined signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, wherein the first undefined signal is a signal that has not been predefined, and the downstream connection The unit 30 is not preset with a connector matching the first undefined signal, and the controller 50 is configured to dynamically configure the reserved connector 3023 according to the first undefined signal, by controlling the fourth The switch unit 604, and outputs the first undefined signal to the BMS 4 through the reserved connection 3023.

It is worth noting that the fourth switch unit 604 may not be provided, and the function of the controller 50 outputting the first undefined signal to the BMS 4 through the reserved connection piece 3023 may also be realized.

The universal connector 3024 in the control connector 302 is connected to the controller 50, and the controller 50 is used to receive the second undefined signal sent by the vehicle diagnostic instrument 2 through the signal transceiver 40, wherein , the second undefined signal is a signal that has not been pre-defined, and the downstream connection unit 30 is not preset with a connector that matches the second undefined signal, and the controller 50 is configured to Two undefined signals dynamically configure the common connector 3024, and output the second undefined signal to the BMS 4 through the universal connector 3024.

It is worth noting that the control connector 302 may not be provided with the interlock connector 3022, the reserved connector 3023 and the universal connector 3024, and the controller 50 may also realize the function of activating the BMS 4 through the control connector 302, And further realize the function of performing performance detection on the storage battery 5 in the off-line state.

The communication connector 303 in the downstream connection unit 30 is connected to the communication pin 102 of the upstream interface 10, the communication connector 303 is connected to the BMS 4, and is connected to the communication lead in the connector 1 of the storage battery. The pin 102 and the communication connector 303 can realize the direct communication between the VCI device 3 or the vehicle diagnostic instrument 2 and the BMS 4. The communication connector 303 is used to receive the detection signal sent by the vehicle diagnostic instrument 2 through the communication pin 102, and send the detection signal to the BMS 4, so that the BMS 4 can detect the signal according to the detection signal. The signal acquires the battery information of the storage battery 5, wherein the battery information matches the detection signal, and the communication connector 303 is used to receive the battery information sent by the BMS 4, and through the communication pin 102 Send the battery information to the vehicle diagnostic instrument 2, so that the vehicle diagnostic instrument 2 detects the battery 5 according to the battery information.

Wherein, the detection signal includes information such as the voltage, temperature, battery capacity and charge and discharge state of the battery 5 detected after the BMS 4 is activated. The storage battery 5 includes a plurality of battery cells 51 , and the detection signal also includes information such as voltage, temperature, battery capacity, and charging and discharging status of a certain battery cell 51 .

The method for the vehicle diagnostic instrument 2 to detect the storage battery 5 according to the battery information can be various, for example, the vehicle diagnostic instrument 2 detects the storage battery 5 according to the battery information including detecting the health of the storage battery 5 state, the cold cranking current of the battery 5 can be detected, that is, the CCA value (Cold Cranking Ampere). When the CCA value is calculated from the battery information of the storage battery 5, if the CCA value is greater than 80% of the preset nominal CCA, the storage battery 5 is considered to be in a healthy state and can be assembled in a car for use. When the CCA value is 70% to 80% of the nominal CCA, it can be considered that the storage battery 5 is in a borderline uncertain state. At this time, it may be necessary to carry out further maintenance to the storage battery 5 before it can be assembled and used on a car. When the CCA value is less than 70% of the nominal CCA, it is considered that the storage battery 5 is damaged and can no longer be used. The method for detecting the state of health of the storage battery 5 is not limited to the above method, and may also have other forms, which will not be repeated here.

The ground connector 304 in the downstream connection unit 30 is connected to the ground pin 103 of the upstream interface 10 , and the ground connector 304 is also used for grounding.

In some embodiments, the power connector 301 , the control connector 302 and the communication connector 303 are all standard interfaces. When the vehicle type of the battery 5 applicable is relatively large, the power supply connector 301, the control connector 302 and the communication connector 303 are set to standard interfaces, and the standard interfaces match the interfaces of the BMS 4 and the BMS 4, Thereby, the connection between the downstream connection unit 30 of the connector 1 of the storage battery and the BMS 4 is facilitated.

In some embodiments, please refer to FIG. 4 , the power connector 301 , the control connector 302 and the communication connector 303 are all wires. Pins are also provided at one end of each wire away from the connector 1 of the storage battery, and the pins are used to connect with the pins of the BMS 4. The wires are numbered, for example 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. The pins of the BMS 4 have pin numbers, and the numbers of the wires have a corresponding relationship with the pin numbers of the BMS 4 pins. Through the corresponding relationship, it is convenient for the connector 1 of the storage battery to pass through the wires Connect with the BMS 4.

In some embodiments, the first switch unit 601 , the second switch unit 602 , the third switch unit 603 and the fourth switch unit 604 are all relays.

For the upstream interface 10, the signal transceiver 40 and the downstream connection unit 30, the signal transceiver 40 supports the transmission of CAN signals or FlexRay signals. The upstream interface 10 includes a communication pin 102 , the downstream connection unit 30 includes a communication connection 303 , and the communication pin 102 is connected to the communication connection 303 . In some embodiments, the number of communication pins 102 and communication connectors 303 is three groups, one communication connector 303 is connected to one communication pin 102, wherein two groups of communication pins 102 The communication connector 303 is used to transmit CAN signals or FlexRay signals, and the remaining set of communication pins 102 and communication connectors 303 is used to transmit LIN signals or K-Line signals.

Wherein, the communication pin 102 and the communication connector 303 for transmitting CAN signals or FlexRay signals can be connected with the VCI device 3 or the vehicle diagnostic instrument 2, and receive the above-mentioned power signal, activation signal and interlocking signal, etc., the communication pin 102 and the communication connector 303 used to transmit the CAN signal or the FlexRay signal are connected to the signal transceiver 40, and the signal transceiver 40 is connected to the controller 50, thereby realizing the controller 50 according to The power supply signal controls the BMS 4 to be powered or powered off, the controller 50 activates the BMS 4 according to the activation signal, and the controller 50 outputs the interlock signal to the BMS 4 according to the interlock signal control .

Wherein, the communication pin 102 and the communication connector 303 used to transmit the CAN signal or the FlexRay signal can realize the direct communication between the vehicle diagnostic instrument 2 and the BMS 4, or realize the vehicle diagnostic instrument 2 through the The direct communication between the VCI device 3 and the BMS 4.

Wherein, the communication pin 102 and the communication connector 303 used to transmit the LIN signal or the K-Line signal can realize the direct communication between the vehicle diagnostic instrument 2 and the BMS 4, or realize the direct communication between the vehicle diagnostic instrument 2 and the BMS 4. Through the direct communication between the VCI device 3 and the BMS 4.

For the above-mentioned indicator light 70, the indicator light 70 is connected with the controller 50, and when the connector 1 of the storage battery is activated, the controller 50 controls the indicator light 70 to output an indication signal. The indication signal is used to display the working status of the battery connector 1, such as running status, communication status, fault status and so on. The running state includes that the battery connector 1 receives the power signal, activation signal and interlock signal sent by the vehicle diagnostic instrument 2 through the communication pin 102, and the running state also includes the control The device 50 activates the BMS 4, etc. The communication state includes that the communication pin 102 receives the detection signal sent by the vehicle diagnostic instrument 2, the communication connector 303 receives the detection signal through the communication pin 102, and transmits the detection signal Send the BMS 4. The communication state also includes that the communication connection part 303 receives the battery information sent by the BMS 4, and sends the battery information to the vehicle diagnostic instrument 2 through the communication pin 102. The failure state includes failure of the battery connector 1 and the like. The indication signal can be indicator lights 70 of different colors.

In the embodiment of the present application, the battery connector 1 includes an upstream interface 10, and is provided with a power supply pin 101 and a communication pin 102, the power supply pin 101 is used to connect with the vehicle diagnostic instrument 2, and the communication pin The pin 102 is used to connect with the vehicle diagnostic instrument 2; the power supply module 20 is connected to the power supply pin 101 and is used to supply power to the power supply pin 101; the downstream connection unit 30 includes a power connector 301, a control connection 302 and communication connector 303, the power connector 301, control connector 302 and communication connector 303 are respectively used to connect with the BMS 4, the power connector 301 and control connector 302 are connected to the power supply The module 20 is connected, the communication connector 303 is connected to the communication pin 102, and the communication connector 303 is used to receive the detection signal sent by the vehicle diagnostic instrument 2 through the communication pin 102, and transmit the The detection signal is sent to the BMS 4, so that the BMS 4 obtains the battery information of the storage battery 5 according to the detection signal, and the communication connection 303 is used to receive the battery information sent by the BMS 4, and The battery information is sent to the vehicle diagnostic instrument 2 through the communication pin 102, so that the vehicle diagnostic instrument 2 detects the storage battery 5 according to the battery information; the signal transceiver 40 communicates with the communication lead The pin 102 is connected; the controller 50 is connected with the power module 20, the signal transceiver 40 and the control connector 302 respectively, and the controller 50 is used to receive the signal transmitted by the vehicle diagnostic instrument 2 through the signal transceiver 40 activation signal, and according to the activation signal, the BMS 4 is activated through the control connector 302. The connector 1 of the storage battery is provided with a power supply module 20, so that it can supply power to the vehicle diagnostic instrument 2 connected to the upstream interface 10 through the upstream interface 10, and can supply power to the storage battery 5 in an offline state through the downstream connection unit 30. The connector 1 of the storage battery can receive the activation signal sent by the vehicle diagnostic instrument 2, and activate the BMS 4 according to the activation signal, the connector 1 of the storage battery can receive the detection signal sent by the vehicle diagnostic instrument 2, and The detection signal is sent to the BMS 4, so that the BMS 4 obtains the battery information of the storage battery 5 according to the detection signal, and the connector 1 of the storage battery can also send the battery information to the vehicle diagnostic instrument 2, The vehicle diagnostic instrument 2 detects the battery 5 according to the battery information, so as to realize the detection of the battery 5 in an offline state.

In the embodiment of the present application, the detection system of the storage battery 5 includes a vehicle diagnostic instrument 2 and a battery connector 1, the upstream interface 10 of the battery connector 1 is connected to the vehicle diagnostic instrument 2, and the connection of the battery The downstream connection unit 30 of the device 1 is used to connect with the BMS 4, and the detection of the battery 5 in the offline state can be realized through the connector 1 of the vehicle diagnostic instrument 2 and the battery.

Please refer to Fig. 2, Fig. 4 and Fig. 5 together, wherein, Fig. 5 is a schematic flowchart of a detection method for a storage battery provided in an embodiment of the present application, and the detection method for a storage battery 5 is applied to the connector 1 of the above storage battery, The method includes the following steps:

Step S10, receiving an activation signal sent by the vehicle diagnostic instrument.

The information of the BMS 4 can be input by the user through the vehicle diagnostic instrument 2, or can be obtained by the vehicle diagnostic instrument 2 according to the vehicle information of the vehicle to which the storage battery 5 is applied, which is input by the user, or can be obtained by the vehicle diagnostic instrument 2. The vehicle diagnostic instrument 2 is obtained by analyzing the information of the storage battery 5 input by the user.

Step S20, activating the BMS according to the activation signal.

Specifically, the activation connection 3021 of the control connection 302 in the battery connector 1 is connected to the power module 20 and the controller 50 through the second switch unit 602, and the activation connection 3021 Connected with the BMS 4, the controller 50 controls the second switch unit 602 according to the activation signal, and activates the BMS 4 through the activation connection 3021. For example, if the activation signal is a 12V high-voltage pulse, and the power module 20 outputs 12V power to the downstream connection unit 30, the controller 50 controls the second switch unit 602 to adjust the 12V power to 12V The high-voltage pulse is then input into the BMS 4 through the activation connector 3021, thereby activating the BMS 4. For another example, if the activation signal is 12V continuous high voltage, and the power module 20 outputs 12V power to the downstream connection unit 30, the controller 50 controls the second switch unit 602 to adjust the 12V power to 12V continuous high voltage, and then input the BMS 4 through the activation connector 3021, thereby activating the BMS 4.

Step S30, receiving a detection signal sent by the vehicle diagnostic instrument.

Wherein, the detection signal includes detection information such as the voltage, temperature, battery capacity and charging and discharging state of the storage battery 5 . The storage battery 5 includes a plurality of battery cells 51 , and the detection signal also includes information such as voltage, temperature, battery capacity, and charging and discharging status of a certain battery cell 51 .

Specifically, the detection signal is received through the communication pin 102 in the upstream interface 10 .

Step S40, sending the detection signal to the BMS, so that the BMS acquires battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal.

Specifically, the communication connector 303 receives the detection signal sent by the vehicle diagnostic instrument 2 through the communication pin 102, and sends the detection signal to the BMS 4, so that the BMS 4 The detection signal obtains the battery information of the storage battery 5 .

It is worth noting that, only after step S20, that is, after activating the BMS 4, can the above-mentioned sending of the detection signal to the BMS 4 be performed, so that the BMS 4 obtains the battery 5 according to the detection signal. Steps for battery information.

Step S50, receiving the battery information sent by the BMS.

Wherein, the battery information includes information such as voltage, temperature, battery capacity, and charging and discharging status of the battery 5 .

Specifically, the communication connection part 303 receives the battery information sent by the BMS 4.

Step S60, sending the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery.

Specifically, the communication connector 303 sends the battery information to the vehicle diagnostic instrument 2 through the communication pin 102 , so that the vehicle diagnostic instrument 2 detects the battery 5 according to the battery information.

The battery information includes information such as voltage, temperature, battery capacity, and charging and discharging status of the battery 5 . The storage battery 5 includes a plurality of battery cells 51 , and the battery information also includes information such as the detected voltage, temperature, battery capacity, and charging and discharging status of a certain battery cell 51 .

In order to understand more clearly the detection method of the storage battery 5 in the offline state through the battery connector 1 in this application, the detection method of the storage battery 5 is described from the detection system of the storage battery 5. Please refer to Fig. 2, Fig. 3 and Fig. 6, wherein, Fig. 6 is a schematic flowchart of another battery detection method provided by the embodiment of the present application, and the method includes the following steps:

Step S1, the vehicle diagnostic instrument obtains the information of the BMS.

The information of the BMS 4 can be input by the user through the vehicle diagnostic instrument 2, or can be obtained by the vehicle diagnostic instrument 2 according to the vehicle information of the vehicle to which the storage battery 5 is applied which is input by the user. The vehicle diagnostic instrument 2 is obtained by analyzing the information of the storage battery 5 input by the user.

The vehicle information includes brand, model, battery model and so on.

Step S2, the vehicle diagnostic instrument obtains the communication protocol and communication interface adopted by the BMS according to the information of the BMS, so as to connect the connector of the battery to the BMS.

The communication protocols and communication interfaces adopted by the BMS 4 of multiple models are stored in the vehicle diagnostic instrument 2, and the vehicle diagnostic instrument 2 can obtain the communication protocol and communication interface matched by the BMS 4 according to the information of the BMS 4. A communication interface, so that the connector 1 of the storage battery is connected with the BMS 4. The vehicle diagnostic instrument 2 can also obtain the communication protocol and communication interface matched by the BMS 4 according to the vehicle information of the vehicle.

After the vehicle diagnostic instrument 2 acquires the communication protocol and communication interface adopted by the BMS 4, it can display the communication protocol and communication interface, so that the user can physically connect the connector 1 of the storage battery with the communication interface in a suitable manner. Describe BMS 4.

When the power connector 301, the control connector 302, the communication connector 303 and the ground connector 304 are all standard interfaces, the connector 1 of the storage battery is connected to the BMS 4 through the standard interfaces.

When the power connector 301, the control connector 302, the communication connector 303 and the ground connector 304 are all wires, the battery connector 1 is connected to the BMS 4 through the wires.

Step S3, after the connector of the battery is connected to the BMS, the vehicle diagnostic instrument is connected to the connector of the battery, and the connector of the battery supplies power to the BMS to start the BMS.

In some embodiments, when the battery connector 1 is connected to the vehicle diagnostic instrument 2 through the VCI device 3 , the battery connector 1 also supplies power to the VCI device 3 .

Step S4, after the vehicle diagnostic instrument detects that the battery is started through the battery connector, it sends an activation signal to the BMS through the battery connector.

The connector 1 of the storage battery performs the following steps:

Step S20, activating the BMS according to the activation signal.

Step S50, receiving the battery information sent by the BMS.

Step S60, sending the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument 2 detects the storage battery.

The specific implementation manners of the above step S10 to step S60 have been discussed above, and will not be repeated here.

Step S5, the vehicle diagnostic instrument receives the battery information.

Step S6, the vehicle diagnostic instrument detects the storage battery according to the battery information.

The method for the vehicle diagnostic instrument 2 to detect the battery 5 includes detecting the state of health of the battery 5, and can detect the cold cranking current of the battery 5, that is, the CCA value (Cold Cranking Ampere). When the CCA value is obtained through the calculation of the battery information of the battery 5, if the CCA value is greater than 80% of the preset nominal CCA, the battery is considered to be in a healthy state and can be assembled in a car for use. When the CCA value is 70% to 80% of the nominal CCA, it can be considered that the storage battery 5 is in a borderline uncertain state. At this time, further maintenance may be required for the storage battery 5 before it can be assembled and used in a vehicle. When the CCA value is less than 70% of the nominal CCA, it is considered that the storage battery 5 is damaged and can no longer be used. The method for detecting the health state of the storage battery 5 is not limited to the detection method for the storage battery 5 described above, and may also have other forms, which will not be repeated here.

In the embodiment of the present application, by receiving the activation signal sent by the vehicle diagnostic instrument; activating the BMS according to the activation signal; receiving the detection signal sent by the vehicle diagnostic instrument; sending the detection signal to the BMS, so that the The BMS obtains the battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal; receives the battery information sent by the BMS; sends the battery information to the vehicle diagnostic instrument so that the vehicle diagnostic instrument detects the storage battery, so that the detection of the storage battery in an offline state can be realized through the connector of the storage battery.

Please refer to Fig. 7, Fig. 7 is a battery detection device provided by the embodiment of the present application, which is applied to the connector of the above-mentioned battery. The device 400 includes: a first receiving module 401, which is used to receive the activation signal sent by the vehicle diagnostic instrument signal; the activation module 402 is used to activate the BMS according to the activation signal; the second receiving module 403 is used to receive the detection signal sent by the vehicle diagnostic instrument; the detection module 404 is used to send the BMS to the BMS The detection signal, so that the BMS acquires the battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal; the third receiving module 405 is configured to receive the battery information sent by the BMS The battery information; a sending module 406, configured to send the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery.

It is worth noting that the information exchange and execution process between the modules in the above-mentioned device are based on the same idea as the above-mentioned embodiment in the embodiment of the present application. For details, please refer to the description of the above-mentioned embodiment in the embodiment of the present application. , which will not be repeated here.

In the embodiment of the present application, the first receiving module 401 receives the activation signal sent by the vehicle diagnostic instrument; the activation module 402 activates the BMS according to the activation signal; the second receiving module 403 receives the detection signal sent by the vehicle diagnostic instrument. signal; the detection module 404 sends the detection signal to the BMS, so that the BMS obtains the battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal; the third receiving module 405 receives the battery information sent by the BMS; the sending module 406 sends the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the battery, so that the connector pair of the battery can be offline state of the battery detection.

Please refer to FIG. 8. FIG. 8 is a schematic diagram of the hardware structure of a controller of a battery connector provided by an embodiment of the present application. The controller 50 includes: one or more processors 51 and memory 52. In FIG. 8, a memory as an example.

The processor 51 and the memory 52 may be connected through a bus or in other ways, and the connection through a bus is used as an example in the embodiment of the present application.

The memory 52, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as the program corresponding to the battery detection method in the embodiment of the present application Instructions/modules (for example, the various modules shown in Figure 7). The processor 51 executes various functional applications and data processing of the battery detection device by running the non-volatile software programs, instructions and modules stored in the memory 52, that is, implements the battery detection method in the above method embodiment.

The memory 52 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the battery detection device, and the like. In addition, the memory 52 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 52 may optionally include a memory set remotely relative to the processor 51, and these remote memories may be connected to the detection device of the storage battery through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The one or more modules are stored in the memory 52 , and when executed by the one or more processors 51 , execute the battery detection method in any method embodiment above.

The above-mentioned products can execute the methods provided in the embodiments of the present application, and have corresponding functional modules and beneficial effects for executing the methods. For technical details not described in detail in this embodiment, refer to the method provided in the embodiment of this application.

An embodiment of the present application provides a non-volatile computer-readable storage medium, the non-volatile computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a controller in any of the above method embodiments The detection method of the storage battery in.

An embodiment of the present application provides a computer program product, including a computer program stored on a non-volatile computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the The computer executes the battery detection method in any method embodiment above.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course, can also be implemented by hardware. Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above-mentioned embodiments can be completed by instructing related hardware through computer programs, and the programs can be stored in computer-readable storage media, and the programs are executed , may include the flow of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

It should be noted that preferred embodiments of the application are given in the specification and accompanying drawings of the application, but the application can be implemented in many different forms, and are not limited to the embodiments described in the specification. These embodiments are not intended as additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Moreover, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present application; furthermore, for those of ordinary skill in the art, improvements or changes can be made according to the above description , and all these improvements and transformations should belong to the scope of protection of the appended claims of this application.

Claims

A battery connector for connecting a vehicle diagnostic instrument and a battery management system (BMS), characterized in that the battery connector includes:

The upstream interface is provided with a power supply pin and a communication pin, the power supply pin is used for connecting with the vehicle diagnostic instrument, and the communication pin is used for connecting with the vehicle diagnostic instrument;

A power supply module, connected to the power supply pin, for supplying power to the power supply pin;

The downstream connection unit includes a power connector, a control connector and a communication connector, the power connector, the control connector and the communication connector are respectively used to connect with the BMS, and the power connector and the control connector are connected to the BMS. The power module is connected, the communication connector is connected to the communication pin, and the communication connector is used to receive the detection signal sent by the vehicle diagnostic instrument through the communication pin, and send the detection signal to to the BMS, so that the BMS obtains the battery information of the storage battery according to the detection signal, and the communication connection part is used to receive the battery information sent by the BMS, and transmit the battery information through the communication pin The battery information is sent to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery according to the battery information;

a signal transceiver connected to the communication pin;

A controller is connected to the power supply module, the signal transceiver and the control connector respectively, the controller is used to receive the activation signal sent by the vehicle diagnostic instrument through the signal transceiver, and pass the activation signal according to the activation signal. A control connection activates the BMS.
The battery connector according to claim 1, characterized in that, the battery connector further includes a control switch, the power connector is connected to the power module and the controller through the control switch, and the control The connecting piece is connected with the power module and the controller through the control switch.
The battery connector according to claim 2, characterized in that,

The control switch includes a first switch unit, the power connector is connected to the power module and the controller through the first switch unit, the power connector is also used to connect to the BMS, and the controller uses To control the opening or closing of the first switch unit to realize the power supply or power failure of the BMS.
The battery connector according to claim 3, characterized in that,

the control connection includes an activation connection;

The control switch includes a second switch unit, the activation connector is connected to the power module and the controller through the second switch unit, the activation connector is also used to connect to the BMS, and the controller The BMS is activated by controlling the second switch unit.
The battery connector according to claim 4, characterized in that,

The controller is also used to receive the interlock signal sent by the vehicle diagnostic instrument through the signal transceiver, and the control connector includes an interlock connector;

The control switch further includes a third switch unit, the interlock connection is connected to the controller through the third switch unit, the interlock connection is also used to connect to the BMS, and the controller By controlling the third switch unit, the interlock connection part outputs the interlock signal to the BMS.
The battery connector according to claim 5, wherein the first switch unit, the second switch unit and the third switch unit are all relays.
The battery connector according to any one of claims 1-6, wherein the power connector, the control connector and the communication connector are all standard interfaces or are all wires.
The battery connector according to any one of claims 1-6, characterized in that,

There are three groups of communication pins and communication connectors, one communication connector is connected to one communication pin;

Wherein, two groups of communication pins and communication connectors are used to transmit CAN signals or FlexRay signals, and the remaining group of communication pins and communication connectors are used to transmit LIN signals or K-Line signals.
The battery connector according to any one of claims 1-6, wherein the upstream interface is an OBD interface.
A detection system for a storage battery, characterized in that it includes a vehicle diagnostic instrument and a battery connector according to any one of claims 1-9;

The upstream interface of the battery connector is connected to the vehicle diagnostic instrument, and the downstream connection unit of the battery connector is used to connect with the BMS.
A battery detection method, applied to the battery connector according to any one of claims 1-9, characterized in that the method comprises:

Receive the activation signal sent by the car diagnostic instrument;

activating the BMS according to the activation signal;

receiving the detection signal sent by the vehicle diagnostic instrument;

sending the detection signal to the BMS, so that the BMS acquires battery information of the storage battery according to the detection signal, wherein the battery information matches the detection signal;

receiving the battery information sent by the BMS;

Sending the battery information to the vehicle diagnostic instrument, so that the vehicle diagnostic instrument detects the storage battery.