CN215867073U

CN215867073U - Point inspection device

Info

Publication number: CN215867073U
Application number: CN202121837188.7U
Authority: CN
Inventors: 李镜威; 李小明; 谭秀强; 黄俊航
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-02-18
Anticipated expiration: 2031-08-06

Abstract

The application provides a device is examined to point, the device includes: a control module; the communication circuit is connected with the control module and the battery detection device; the battery detection device comprises n test branches, each test branch is connected with the battery detection device, a switch is arranged in each test branch, the switch in each test branch is connected with the control module, n is a positive integer and is more than or equal to 1; the control module is used for receiving an opening and closing instruction of the switch sent by the battery detection device through the communication circuit and controlling the opening and closing of the switch in the test branch according to the opening and closing instruction; and detecting each function of the battery detection device by opening and closing the switch in each test branch. Adopt the point of this application to examine the device and carry out the point to battery detection device and examine, can improve current point to power battery comprehensive testing equipment examine inefficiency and the point examine accurate problem inadequately.

Description

Point inspection device

Technical Field

The application relates to the technical field of equipment detection, in particular to a point inspection device.

Background

The inside of the comprehensive detection equipment for the power battery is provided with a power supply module, a communication module, a voltage-withstanding insulator, a high-precision multimeter and other functional modules and detection instruments, and the comprehensive performance of the power battery pack can be tested through the internal functional modules and the detection instruments. But the functional normality, the measurement accuracy and the reliability of the detection equipment are ensured by depending on measurement calibration and daily functional point inspection.

The measurement calibration of the comprehensive detection equipment for the power battery is usually carried out in half a year or year, the time span is large, the equipment needs to be disassembled, the calibration is carried out after the measuring instrument is disassembled, the process is complex, and the point detection efficiency is low. In addition, the current point inspection method for the detection equipment measures the power supply condition of the equipment by using a portable multimeter, and verifies the basic tests of the voltage withstand instrument, the multimeter and the grounding resistance tester by using a method of connecting a resistor, and the point inspection methods are complicated in operation, cannot cover all test functions of the equipment, and cannot guarantee the measurement precision. In addition, with the above calibration method, there may be a bad outflow of the battery product due to the failure of the detection device.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a device is examined to point to improve "current point to power battery comprehensive testing equipment examine inefficiency and the point examine not accurate enough" problem.

The utility model is realized by the following steps:

in a first aspect, an embodiment of the present application provides a spot inspection device, where the device includes: a control module; the communication circuit is connected with the control module and the battery detection device; the battery detection device comprises n test branches, each test branch is connected with the battery detection device, a switch is arranged in each test branch, the switch in each test branch is connected with the control module, n is a positive integer and is more than or equal to 1; the control module is used for receiving an opening and closing instruction of the switch sent by the battery detection device through the communication circuit and controlling the opening and closing of the switch in the test branch according to the opening and closing instruction; and detecting each function of the battery detection device by opening and closing the switch in each test branch.

In the embodiment of the application, the battery detection device sends a switch opening and closing instruction to the control module through the communication circuit, and the control module closes or opens the switch corresponding to the instruction according to the received instruction after receiving the switch opening and closing instruction sent by the battery detection device. Because of battery detection device all is connected with every test branch road, consequently, after some switches in the closed n test branch roads, can form the return circuit between the test branch road of closed switch and each detecting instrument in the battery detection device, alright utilize each detecting instrument to detect battery detection device's corresponding function this moment. And, through closing and opening different switch combinations, can realize detecting battery detection device's each item function. The battery detection device is subjected to functional point inspection through the point inspection device, so that the battery detection device can be prevented from being disassembled during point inspection, the detection of the battery detection device by manually using each detection instrument can also be avoided, and the point inspection efficiency of the battery detection device is improved. In addition, in the spot inspection process, the inspection instrument in the battery inspection device is used for spot inspection, so that the accuracy of functional spot inspection of the battery inspection device by the spot inspection device is higher than that of manual spot inspection of the battery inspection device by using each inspection instrument.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: a first dielectric withstand voltage test branch, the first dielectric withstand voltage test branch includes: the first switch comprises a positive electrode connecting port, a negative electrode connecting port, a first switch and a first resistor, wherein a first end and a second end of the first switch are respectively connected with the positive electrode connecting port and the first resistor, and a control end of the first switch is connected with the control module; the other end of the first resistor is connected with the negative electrode connecting port; the control module is used for realizing the test of an insulating withstand voltage instrument of the battery detection device and loops among the anode connection port, the cathode connection port and the insulating withstand voltage instrument by controlling the opening and closing of the first switch; the positive electrode connecting port is a first high-voltage positive electrode port, and the negative electrode connecting port is a first high-voltage negative electrode port; or the positive electrode connecting port is a first fast-charging positive electrode port, and the negative electrode connecting port is a first fast-charging negative electrode port; or, the positive connection port is a first four-wheel-drive positive port, and the negative connection port is a first four-wheel-drive negative port.

In this embodiment of the application, in the point detection process, the battery detection device is connected to both the positive connection port and the negative connection port of the point detection device, that is, the internal digital multimeter and the voltage withstanding instrument are connected to both the positive connection port and the negative connection port, so that the control module controls the first switch to be closed, and the digital multimeter and the voltage withstanding instrument can measure the first resistance. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; and the resistance of the first resistor measured by the two resistors is judged, so that whether the loops from the digital multimeter to the positive electrode connecting port and the negative electrode connecting port are normal or not and whether the loops from the voltage withstand instrument to the positive electrode connecting port and the negative electrode connecting port are normal or not can be detected. In addition, the positive connection port may be a first high voltage positive port, and the negative connection port may be a first high voltage negative port; or, the positive connection port may be a first fast-charging positive port, and the negative connection port may be a first fast-charging negative port; alternatively, the positive connection port may be a first four-wheel-drive positive port, and the negative connection port may be a first four-wheel-drive negative port. Therefore, when the positive connection port and the negative connection port are different types of ports, whether the loops from the digital multimeter to the different ports are normal or not and whether the loops from the voltage withstand instrument to the different connection ports are normal or not can be conveniently detected according to the mode, and the detection accuracy can be ensured.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the first insulation withstand voltage testing branch further includes a first ground port, and the other end of the first resistor, which is connected to the first switch end, is connected to the first ground port; the control module is further used for controlling the first switch to be opened and closed so as to test the voltage withstand instrument and loops among the positive electrode connecting port, the first ground wire port and the voltage withstand instrument.

In the embodiment of the application, in the point detection process, the battery detection device is connected with both the positive connection port and the first ground port in the point detection device, that is, the digital multimeter and the dielectric withstand voltage instrument inside the battery detection device are connected with both the positive connection port and the first ground port, so that the control module can realize the measurement of the digital multimeter and the dielectric withstand voltage instrument on the first resistor by controlling the closing of the first switch. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; and the resistance values of the first resistors measured by the two resistors are judged, so that whether the loops from the digital multimeter to the positive electrode connecting port and the first ground wire port are normal or not and whether the loops from the voltage withstand instrument to the positive electrode connecting port and the first ground wire port are normal or not can be detected. And because the positive electrode connecting port can be a first high-voltage positive electrode port, a first quick-charging positive electrode port or a first four-wheel-drive positive electrode port, when the positive electrode connecting ports are different types of ports, whether the loops from the digital multimeter to different ports and the first ground wire port are normal and whether the loops from the voltage withstand instrument to different connecting ports and the first ground wire port are normal can be detected conveniently and rapidly by the mode, and the detection accuracy can be ensured.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: a second withstand voltage test branch circuit, the second withstand voltage test branch circuit comprising: the first end and the second end of the second switch are respectively connected with the second ground port and the second resistor, and the control end of the second switch is connected with the control module; the other end of the second resistor is connected with the port of the third ground wire; the control module is used for controlling the opening and closing of the second switch to realize the test of the voltage withstand instrument of the battery detection device and the loops between the second ground port, the third ground port and the voltage withstand instrument.

In this embodiment of the application, in the point detection process, the battery detection device is connected to both the second ground port and the third ground port of the point detection device, that is, the digital multimeter and the dielectric withstand voltage tester inside the battery detection device are connected to both the second ground port and the third ground port, so that the control module can realize the measurement of the digital multimeter and the dielectric withstand voltage tester on the second resistor by controlling the second switch to be closed. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; through judging the resistance of the second resistance that measures to both, can detect out digital multimeter conveniently and accurately whether normal to the return circuit of second ground port and third ground port to and whether normal to the return circuit of withstand voltage appearance to second ground port and third ground port.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: the first communication test branch comprises a second high-voltage positive port, a second high-voltage negative port, a first communication high-level port, a first communication low-level port, a third switch and a fourth switch, wherein the first end and the second end of the third switch are respectively connected with the second high-voltage positive port and the first communication high-level port, and the control end of the third switch is connected with the control module; a first end and a second end of the fourth switch are respectively connected with the second high-voltage negative port and the first communication low-level port, and a control end of the fourth switch is connected with the control module; the control module is used for controlling the third switch and the fourth switch to be opened and closed so as to realize the test of the communication signal corresponding to the first communication test branch.

In the embodiment of the application, in the measurement process, the battery detection device is connected with the second high-voltage positive port, the second high-voltage negative port, the first communication high-level port and the first communication low-level port, that is, the digital multimeter in the battery detection device is connected with the second high-voltage positive port and the second high-voltage negative port, and the communication module in the battery detection device is correspondingly connected with the first communication high-level port and the first communication low-level port, so that the control module can be used for enabling the digital multimeter to measure the resistance value between the first communication high-level port and the first communication low-level port by controlling the third switch and the fourth switch to be closed simultaneously, and judging whether the communication module in the battery detection device is normal or not by judging the resistance value. Through the point inspection mode, the communication module in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: a first power supply test branch, the first power supply test branch comprising: the first switch is connected with the first power supply positive electrode port, the second switch is connected with the third high-voltage positive electrode port, and the control end of the fifth switch is connected with the control module; a first end and a second end of the sixth switch are respectively connected with the first power supply negative electrode port and the third high-voltage negative electrode port, and a control end of the sixth switch is connected with the control module; the control module is used for controlling the opening and closing of the fifth switch and the sixth switch to realize the test of the power supply signal of the battery detection device.

In the embodiment of the application, in the point detection process, the battery detection device is connected to the first power supply positive electrode port, the first power supply negative electrode port, the third high-voltage positive electrode port and the third high-voltage negative electrode port, that is, the digital multimeter in the battery detection device is connected to the third high-voltage positive electrode port and the third high-voltage negative electrode port, and the power module in the battery detection device is correspondingly connected to the first power supply positive electrode port and the first power supply negative electrode port, so that the control module can make the digital multimeter measure the voltage value between the first power supply positive electrode port and the first power supply negative electrode port by controlling the fifth switch and the sixth switch to be closed simultaneously, and can judge whether the power module in the battery detection device is normal or not by judging the voltage value. Through the point inspection mode, the power supply module in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: a second power supply test branch, the second power supply test branch comprising: the power supply comprises a first power supply positive port, a first power supply negative port and a first indicator light, wherein the first power supply positive port and the first power supply negative port are connected with the control module; and the on and off of the first indicator light is used for indicating whether the second power supply testing branch supplies power to the control module normally or not.

In the embodiment of the application, in the checking process, the power module in the battery detection device is connected with the second power supply positive electrode port and the second power supply negative electrode port, the second power supply positive electrode port and the second power supply negative electrode port are connected with the control module, and the first indicator lamp is arranged on the control module, so that when the first indicator lamp is turned on, the power module in the battery detection device can be judged to normally supply power to the checking device, namely the power module is normal; on the contrary, if the first indicator light is turned off, it can be determined that the power module supplies power to the point inspection device abnormally, that is, the power module is abnormal. Through the bright of first pilot lamp and going out, can judge conveniently whether above-mentioned power module is normal to can avoid dismantling battery detection device because of the point is examined, and then improve the point and examined efficiency.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include a functional test branch, the functional test branch includes a functional test port, a third power supply negative port, a fourth high-voltage positive port, a fourth high-voltage negative port, a seventh switch and an eighth switch, a first end and a second end of the seventh switch are respectively connected to the functional test port and the fourth high-voltage positive port, and a control end of the seventh switch is connected to the control module; a first end and a second end of the eighth switch are respectively connected with the third power supply negative electrode port and the fourth high-voltage negative electrode port, and a control end of the eighth switch is connected with the control module; the control module is used for controlling the seventh switch and the eighth switch to be opened and closed so as to test the functions of the battery detection device.

In this embodiment of the application, in the point detection process, the battery detection device is connected to the functional test port, the third power negative port, the fourth high-voltage positive port and the fourth high-voltage negative port, that is, the internal digital multimeter is connected to the fourth high-voltage positive port and the fourth high-voltage negative port, the power module is connected to the third power negative port, and the functional module is connected to the functional test port, so that the control module controls the seventh switch and the eighth switch to be simultaneously closed, so that the digital multimeter can measure the value between the functional test port and the third power negative port, and the value is judged to determine whether the functional module in the battery detection device is normal. The functional module can be selected in various ways according to actual conditions, such as a PWM signal generation module, a pull-down resistor module, and the like. Through the point inspection mode, the functional module in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches include: the high-voltage insulation and voltage resistance testing device comprises a high-voltage insulation and voltage resistance testing branch, a second communication testing branch, a third power supply testing branch, a pulse function testing branch and a pull-up resistance testing branch; the high-voltage insulation withstand voltage test branch comprises: the first end and the second end of the ninth switch are respectively connected with the fifth high-voltage positive electrode port and the third resistor, and the control end of the ninth switch is connected with the control module; the other end of the third resistor is connected with the fifth high-voltage negative electrode; the control module is used for realizing the test of the voltage withstand instrument of the battery detection device and the loops between the fifth high-voltage positive electrode port, the fifth high-voltage negative electrode port and the voltage withstand instrument by controlling the opening and closing of the ninth switch; the second communication test branch comprises: the first end and the second end of the tenth switch are respectively connected with the second communication high level port and the first end of the eleventh switch, and the control end of the tenth switch is connected with the control module; the second end of the eleventh switch is connected with the fifth high-voltage positive electrode port, and the control end of the eleventh switch is connected with the control module; a first end and a second end of the twelfth switch are respectively connected with the second communication low-level port and the first end of the thirteenth switch, and a control end of the twelfth switch is connected with the control module; a second end of the thirteenth switch is connected with the fifth high-voltage negative port, and a control end of the thirteenth switch is connected with the control module; the control module is used for controlling the tenth switch, the eleventh switch, the twelfth switch and the thirteenth switch to be switched on and off so as to realize the test of the communication signal corresponding to the second communication test branch; the third communication test branch includes: a third communication high level port, a third communication low level port, a fourteenth switch and a fifteenth switch, wherein a first end of the fourteenth switch is connected to the third communication high level port, a second end of the fourteenth switch is connected to a connection line between the tenth switch and the eleventh switch, and a control end of the fourteenth switch is connected to the control module; a first end of the fifteenth switch is connected with the third communication low-level port, a second end of the fifteenth switch is connected with a connecting line between the twelfth switch and the thirteenth switch, and a control end of the fifteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the thirteenth switch, the fourteenth switch and the fifteenth switch to be switched on and off so as to realize the test of the communication signal corresponding to the third communication test branch; the third power supply test branch comprises: the fourth power supply positive terminal port and the fourth power supply negative terminal port are connected with the control module, and the second indicator lamp is arranged on the control module; a first end of the sixteenth switch is connected with a connecting line between the fourth power supply positive electrode port and the control module, a second end of the sixteenth switch is connected with the fifth high-voltage positive electrode port, and a control end of the sixteenth switch is connected with the control module; a first end of the seventeenth switch is connected with a connecting line between the fourth power supply negative electrode port and the control module, a second end of the seventeenth switch is connected with the fifth high-voltage negative electrode port, and a control end of the seventeenth switch is connected with the control module; the control module is used for controlling the sixteenth switch and the seventeenth switch to be switched on and off so as to realize the test of the power supply signal of the battery detection device; the on and off of the second indicator light is used for indicating whether a third power supply testing branch supplies power to the control module normally or not; the pulse function test branch comprises: the first end of the eighteenth switch is connected with the pulse function test port, the second end of the eighteenth switch is connected with a connecting line between the tenth switch and the eleventh switch, and the control end of the eighteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the seventeenth switch and the eighteenth switch to be switched on and off so as to test the function of the battery detection device; the pull-up resistance test branch comprises: a pull-up resistance test port and a nineteenth switch, wherein a first end of the nineteenth switch is connected with the pull-up resistance test port, a second end of the nineteenth switch is connected with a connecting line between the tenth switch and the eleventh switch, and a control end of the nineteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the seventeenth switch and the nineteenth switch to be opened and closed so as to test the functions of the battery detection device.

In the embodiment of the application, in the point detection process, a digital multimeter and an insulating withstand voltage instrument in the battery detection device are both connected with a fifth high-voltage positive port and a fifth high-voltage negative port, two communication modules in the battery detection device are respectively connected with a second communication high-level port, a second communication low-level port, a third communication high-level port and a third communication low-level port correspondingly, a power module in the battery detection device is connected with a fourth power supply positive port and a fourth power supply negative port correspondingly, and two function modules in the battery detection device are respectively connected with a pulse function test port and a pull-up resistance test port correspondingly, so that the control module can respectively measure the resistance values of a third resistor by controlling the closing of a ninth switch, and the digital multimeter and the insulating withstand voltage instrument can detect whether the digital multimeter and the insulating withstand voltage instrument are normal or not by measuring the third resistor; the resistance value of the third resistor measured by the digital multimeter and the resistance value of the third resistor can be judged to detect whether a loop from the digital multimeter to the fifth high-voltage positive electrode port and the fifth high-voltage negative electrode port is normal or not and whether a loop from the voltage withstand instrument to the fifth high-voltage positive electrode port and the fifth high-voltage negative electrode port is normal or not; the control module controls the tenth switch, the eleventh switch, the twelfth switch and the thirteenth switch to be simultaneously closed, so that the digital multimeter can measure the resistance value between the second communication high-level port and the second communication low-level port, and can judge whether a communication module connected with the second communication high-level port and the second communication low-level port in the battery detection device is normal or not by judging the resistance value; the control module controls the eleventh switch, the thirteenth switch, the fourteenth switch and the fifteenth switch to be simultaneously closed, so that the digital multimeter can measure the resistance value between the third communication high level port and the third communication low level port, and can judge whether a communication module connected with the third communication high level port and the third communication low level port in the battery detection device is normal or not by judging the resistance value; the control module controls the sixteenth switch and the seventeenth switch to be simultaneously closed, so that the digital multimeter can measure the voltage between the positive electrode port of the fourth power supply and the negative electrode port of the fourth power supply, and can judge whether the power supply module in the battery detection device is normal or not by judging the voltage, and can judge whether the power supply module is normal or not by judging whether the second indicator light is on or off; the control module controls the eleventh switch, the seventeenth switch and the eighteenth switch to be simultaneously closed, so that the digital multimeter can measure the voltage between the pulse function test port and the negative electrode port of the fourth power supply, and the voltage is judged to judge whether a functional module connected with the pulse function test port in the battery detection device is normal or not; the control module controls the eleventh switch, the seventeenth switch and the nineteenth switch to be simultaneously closed, so that the digital multimeter can measure the resistance value between the pull-up resistance test port and the fourth power supply negative electrode port, and the resistance value is judged to judge whether a functional module connected with the pull-up resistance test port in the battery detection device is normal or not. Through the mode, after the battery detection device is connected with each port of the point detection device, whether each module of the battery detection device is normal or not can be sequentially measured through the point detection device, and compared with the existing mode that manual measurement and correction are carried out after battery detection equipment is disassembled, the point detection efficiency of the battery detection device can be improved through the mode, and the point detection accuracy is guaranteed.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches further include: fill withstand voltage test branch road soon, fill withstand voltage test branch road soon includes: the first end and the second end of the twentieth switch are respectively connected with the second quick-charging positive electrode port and the fourth resistor, and the control end of the twentieth switch is connected with the control module; the other end of the fourth resistor is connected with the second fast-charging negative electrode port; the control module is further used for controlling the twentieth switch to be opened and closed so as to test a voltage withstand insulator of the battery detection device and a loop between the second quick-charging positive electrode port and the second quick-charging negative electrode port and the voltage withstand insulator.

In this embodiment of the application, in the point inspection process, the battery detection device is connected to both the second fast positive electrode charging port and the second fast negative electrode charging port in the point inspection device, that is, the digital multimeter and the voltage withstand voltage instrument therein are connected to both the second fast positive electrode charging port and the second fast negative electrode charging port, so that the control module can realize the measurement of the twentieth resistance by the digital multimeter and the voltage withstand voltage instrument by controlling the closing of the twentieth switch. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; the resistance value of the twentieth resistor measured by the two resistors can be judged, so that whether the loop from the digital multimeter to the second quick-charging positive electrode port and the second quick-charging negative electrode port is normal or not and whether the loop from the voltage withstand instrument to the second quick-charging positive electrode port and the second quick-charging negative electrode port is normal or not can be detected conveniently and accurately.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches further include: four-wheel drive insulating and voltage-withstanding test branch road, four-wheel drive insulating and voltage-withstanding test branch road includes: the first end and the second end of the twenty-first switch are respectively connected with the second four-wheel-drive positive electrode port and the fifth resistor, and the control end of the twenty-first switch is connected with the control module; the other end of the fifth resistor is connected with the second four-wheel-drive negative electrode port; the control module is further used for controlling the twenty-first switch to be opened and closed so as to realize the test of a loop between the voltage withstand instrument of the battery detection device and the second four-wheel-drive positive electrode port and the second four-wheel-drive negative electrode port and the voltage withstand instrument.

In this embodiment of the application, in the point detection process, the battery detection device is connected to both the second four-wheel-drive positive port and the second four-wheel-drive negative port in the point detection device, that is, the internal digital multimeter and the dielectric withstand voltage tester are connected to both the second four-wheel-drive positive port and the second four-wheel-drive negative port, so that the control module can realize the measurement of the twenty-first resistor by the digital multimeter and the dielectric withstand voltage tester by controlling the closing of the twenty-first switch. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; by judging the resistance values of the twenty-first resistor measured by the two resistors, whether a loop from the digital multimeter to the second four-wheel drive positive electrode port and the second four-wheel drive negative electrode port is normal or not and whether a loop from the voltage withstand instrument to the second four-wheel drive positive electrode port and the second four-wheel drive negative electrode port is normal or not can be detected conveniently and accurately.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the n test branches further include: the withstand voltage test of ground connection, the withstand voltage test of ground connection branch road includes: the first end and the second end of the twenty-second switch are respectively connected with the fourth ground port and the sixth resistor, and the control end of the twenty-second switch is connected with the control module; the other end of the sixth resistor is connected with the port of the fifth ground wire; the fourth ground wire port is connected with the other end, opposite to the third resistor, of the ninth switch end, the other end, opposite to the twentieth switch end, of the fourth resistor and the other end, opposite to the twenty-first switch end, of the fifth resistor; the control module is further used for controlling the opening and closing of the twenty-second switch to achieve testing of a loop between the withstand voltage instrument of the battery detection device and the fourth ground port, the fifth ground port and the withstand voltage instrument.

In this embodiment of the application, in the process of point detection, the battery detection device is connected to both the fourth ground port and the fifth ground port in the point detection device, that is, the digital multimeter and the dielectric withstand voltage meter inside the battery detection device are connected to both the fourth ground port and the fifth ground port, so that the control module can realize the measurement of the digital multimeter and the dielectric withstand voltage meter on the twenty-second resistor by controlling the closing of the twenty-second switch. Whether the digital multimeter and the insulation withstand voltage instrument are normal can be detected through the measurement process of the digital multimeter and the insulation withstand voltage instrument; the resistance of the twenty-second resistor measured by the two resistors is judged, so that whether a loop from the digital multimeter to the fourth ground port and the fifth ground port is normal or not and whether a loop from the voltage withstand instrument to the fourth ground port and the fifth ground port is normal or not can be conveniently and accurately detected. In addition, the digital multimeter and the voltage withstand instrument can also measure the resistance values of a third resistor, a fourth resistor and a fifth resistor through a fifth high-voltage positive electrode port and a fourth ground wire port, a second quick charging positive electrode port and a fourth ground wire port, a second fourth driving positive electrode port and a fourth ground wire port respectively, so that whether the loops from the digital multimeter to the fifth high-voltage positive electrode port and the fourth ground wire port, the second quick charging positive electrode port and the fourth ground wire port, the second fourth driving positive electrode port and the fourth ground wire port are normal or not and whether the loops from the voltage withstand instrument to the fifth high-voltage positive electrode port and the fourth ground wire port, the second quick charging positive electrode port and the fourth ground wire port, the second fourth driving positive electrode port and the fourth ground wire port are normal or not can be detected conveniently and accurately.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the communication circuit includes a fourth communication high-level port and a fourth communication low-level port, and both the fourth communication high-level port and the fourth communication low-level port are connected to the control module; the communication circuit is used for sending the signal sent by the battery detection device to the control module.

In this embodiment of the application, in the spot detection process, the communication module in the battery detection device is connected to both the fourth communication high-level port and the fourth communication low-level port, and both the fourth communication high-level port and the fourth communication low-level port are connected to the control module, so that the communication module can send a switch opening and closing instruction to the control module through the communication circuit, and the control module can confirm that the communication module is normal when making a corresponding switch opening and closing action according to the instruction.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the control module includes a communication control sub-module and a switch control sub-module, and the communication control sub-module is connected to the fourth communication high-level port, the fourth communication low-level port, the fourth power positive electrode port, the fourth power negative electrode port, and the switch control sub-module; the switch control submodule is connected with all switches in the n test branches; the communication control submodule is used for receiving a switch opening and closing instruction sent by the battery detection device through the communication circuit and sending the instruction to the switch control submodule; the switch control submodule is used for receiving the instruction sent by the communication submodule and controlling the switch to be opened or closed according to the instruction.

In the embodiment of the application, the communication between the battery detection device and the point detection device can be more efficiently realized by arranging the communication control submodule; the switches in the n test branches can be controlled more conveniently by arranging the switch control sub-module.

With reference to the technical solution provided by the first aspect, in some possible implementation manners, the spot inspection device further includes a wake-up signal port and a third indicator light, one end of the third indicator light is connected to the wake-up signal port, and the other end of the third indicator light is connected to the negative electrode port of the fourth power supply; and the on and off of the third indicator light is used for indicating whether the wake-up signal output by the battery detection device is normal or not.

In this embodiment of the application, because in the checking process, the wake-up signal module of the battery detection device is connected to the wake-up signal port of the checking device, when the detection device controls the output of the wake-up signal, whether the wake-up signal is normal or not is judged according to the on/off of the third indicator light, that is, if the third indicator light is on, the wake-up signal output by the battery detection device is normal.

In combination with the technical solution provided by the first aspect, in some possible implementations, the switch is a relay.

In this application embodiment, the switch in n test branch road is the relay, and control module can control each test branch road more conveniently and test through the switching of control relay.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first spot inspection device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first testing branch circuit provided in an embodiment of the present application.

Fig. 3 is another schematic structural diagram of the first testing branch circuit according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a second testing branch circuit provided in the embodiment of the present application.

Fig. 5 is a schematic structural diagram of a third testing branch circuit provided in the embodiment of the present application.

Fig. 6 is a schematic structural diagram of a fourth testing branch circuit provided in the embodiment of the present application.

Fig. 7 is a schematic structural diagram of a fifth test branch according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a sixth testing branch circuit provided in the embodiment of the present application.

Fig. 9 is a schematic structural diagram of a second spot inspection device according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a third spot inspection device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a fourth spot inspection device according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a fifth spot inspection device according to an embodiment of the present application.

Fig. 13 is a schematic structural diagram of a sixth spot inspection device according to an embodiment of the present application.

Fig. 14 is a schematic structural diagram of a seventh spot inspection device according to an embodiment of the present application.

Fig. 15 is a schematic structural diagram of an eighth spot inspection device according to an embodiment of the present application.

Icon: 100-a point inspection device; 10-a control module; 20-a communication circuit; 1-a first test branch; 11-positive connection port; 12-a negative connection port; 21-a first ground port; 2-a second test branch; 31-a second ground port; 32-a third ground port; 3-a third test branch; 41-a second high voltage positive port; 42-a second high voltage negative port; 43-first communication high port; 44-a first communication low port; 4-a fourth test branch; 51-first power supply positive terminal; 52-first power supply negative port; 53-third high voltage positive port; 54-a third high voltage negative port; 5-a fifth test branch; 61-second power positive port; 62-a second power supply negative port; 6-sixth test branch; 71-functional test port; 72-third power supply negative port; 73-a fourth high voltage positive port; 74-a fourth high voltage negative port; 81-fifth high voltage positive port; 82-fifth high voltage negative port; 83-second communication high level port; 84-a second communication low port; 85-third communication high level port; 86-a third communication low port; 87-fourth power supply positive terminal; 88-a fourth power supply negative port; 89-pulse function test port; 90-pull up resistor test port; 91-a second fast positive port; 92-a second fast charge negative port; 93-second four-drive positive port; 94-second four-drive negative port; 95-a fourth ground port; 96-fifth ground port; 97-fourth communication high level port; 98-a fourth communication low level port; 99-a communication control sub-module; 101-a switch control submodule; 102-wake-up signal port; 201-a communication module; 202-a power supply module; 203-function module; 204-wake-up signal module.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In view of the current point to power battery comprehensive testing equipment examine inefficiency and the point examine problem accurate inadequately, the utility model discloses the people explores through long-term research, proposes following embodiment in order to solve above-mentioned problem.

Referring to fig. 1, a first spot inspection apparatus 100 is provided in the present embodiment. The apparatus 100 comprises: the test system comprises a control module 10, a communication circuit 20 and n test branches; wherein, the communication circuit 20 is connected with the control module 10 and the battery detection device; each testing branch is connected with the battery detection device, a switch is arranged in each testing branch, and the switch in each testing branch is connected with the control module 10, wherein n is a positive integer and is more than or equal to 1; the control module 10 is configured to receive an opening/closing instruction of the switch sent by the battery detection apparatus through the communication circuit 20, and control opening/closing of the switch in the test branch according to the opening/closing instruction; the functions of the battery detection device are detected by opening and closing the switch in each test branch.

In the embodiment of the present application, the spot inspection device 100 is used for performing function inspection on the battery inspection device. In the spot inspection process, the battery detection equipment is connected with the communication circuit and the n test branches, and sends an opening and closing instruction of a switch to the control module 10 of the spot inspection device 100 through the communication circuit; after the control module 10 receives the instruction, the switch corresponding to the instruction is opened and closed according to the instruction. And because the battery detection device is connected with each test branch, after some switches in the n test branches are closed, a loop can be formed between the test branch with the closed switch and each detection instrument in the battery detection device, and at the moment, each detection instrument can be used for detecting the corresponding function of the battery detection device. And, through closing and opening different switch combinations, can realize detecting battery detection device's each item function.

The battery detection device is subjected to functional point inspection through the point inspection device, so that the disassembly of the battery detection device during point inspection can be avoided, the detection of the battery detection device by manually using each detection instrument can also be avoided, and the point inspection efficiency of the battery detection device is improved. In addition, since the battery detection device is spot-inspected by the detection instrument inside the battery detection device in the spot-inspecting process, the accuracy of the functional spot inspection performed on the battery detection device by the spot-inspecting device 100 is higher than that of the manual spot inspection performed on the battery detection device by using each detection instrument.

Optionally, the switch is a relay. In actual use, the switch may be a contactor or a boat-type switch. The switches in the n test branches can be the same or different, that is, the switches in the n test branches can be all relays or can be partially relays.

The battery detection device is internally provided with a pulse signal generation module, a plurality of communication modules 201, a power supply module 202, a pull-down resistor module, a functional module 203 such as a digital multimeter and an insulation and voltage withstand instrument, and detection instruments, so that when the battery detection device is checked, the functional module 203, the detection instruments, branches between the detection instruments and ports are required to be detected.

Optionally, referring to fig. 2, fig. 2 is a schematic structural diagram of a first testing branch 1 according to an embodiment of the present disclosure. First test branch 1 specifically is first insulation withstand voltage test branch, and first insulation withstand voltage test branch includes: the first switch K1 comprises a positive electrode connecting port 11, a negative electrode connecting port 12, a first switch K1 and a first resistor R1, wherein a first end and a second end of the first switch K1 are respectively connected with the positive electrode connecting port 11 and the first resistor R1, and a control end of the first switch K3526 is connected with the control module 10; the other end of the first resistor R1 is connected to the negative connection port 12; the control module 10 is used for testing the voltage withstand instrument of the battery detection device and the loops between the positive electrode connection port 11, the negative electrode connection port 12 and the voltage withstand instrument by controlling the opening and closing of the first switch K1.

There are three different cases of the positive connection port 11 and the negative connection port 12.

The first case is: when the positive connection port 11 is a first high-voltage positive port, and the negative connection port 12 is a first high-voltage negative port, if the resistance value of the first resistor R1 is measured to be 8M Ω by using a resistance test file of the digital multimeter, it indicates that the digital multimeter is normal, and the loops from the digital multimeter to the first high-voltage positive port and the first high-voltage negative port are normal; if the first resistor R1 is measured to be 8M omega by using an insulation resistance test file of the insulation voltage withstand instrument, the situation that a loop from the insulation voltage withstand instrument to the first high-voltage positive electrode port and the first high-voltage negative electrode port is normal is shown, and the insulation resistance test function of the insulation voltage withstand instrument is normal; if the first resistor R1 is measured by using a 1000V withstand voltage test file of the withstand voltage tester, and the measured leakage current is 0.125mA, the circuit from the withstand voltage tester to the first high-voltage positive electrode port and the first high-voltage negative electrode port is normal, and the withstand voltage test function of the circuit is normal.

The second case is: when the positive connection port 11 is a first fast-charging positive port, and the negative connection port 12 is a first fast-charging negative port, if the resistance value of the first resistor R1 is 10M Ω measured by using a resistance test file of the digital multimeter, it indicates that the digital multimeter is normal, and the loops from the digital multimeter to the first fast-charging positive port and the first fast-charging negative port are normal; if the first resistor R1 is 10M omega measured by using an insulation resistance test file of the voltage withstand instrument, the situation that a loop from the voltage withstand instrument to the first quick-charging positive electrode port and the first quick-charging negative electrode port is normal is shown, and the insulation resistance test function of the voltage withstand instrument is normal; if the first resistor R1 is measured by using a 1000V withstand voltage test file of the withstand voltage tester, and the measured leakage current is 0.1mA, the circuit from the withstand voltage tester to the first fast charge positive electrode port and the first fast charge negative electrode port is normal, and the withstand voltage test function of the withstand voltage tester works normally.

The third case is: when the positive connection port 11 is a first four-wheel-drive positive port and the negative connection port 12 is a first four-wheel-drive negative port, if the resistance value of the first resistor R1 is measured to be 6M Ω by using a resistance test file of the digital multimeter, it indicates that the digital multimeter is normal, and the loops from the digital multimeter to the first four-wheel-drive positive port and the first four-wheel-drive negative port are normal; if the first resistor R1 is measured to be 6M omega by using an insulation resistance test file of the voltage withstand instrument, the situation that a loop from the voltage withstand instrument to the first four-wheel-drive positive electrode port and the first four-wheel-drive negative electrode port is normal is shown, and the insulation resistance test function of the voltage withstand instrument is normal; if the first resistor R1 is measured by using a 1000V withstand voltage test file of the withstand voltage tester, and the measured leakage current is 0.167mA, the circuit from the withstand voltage tester to the first four-wheel drive positive electrode port and the first four-wheel drive negative electrode port is normal, and the withstand voltage test function of the circuit is normal.

In the n test branches, the number of the first insulation withstand voltage test branches may be two, that is, there are a first case and a second case, or a first case and a third case, or a second case and a third case. In addition, the number of the first insulation withstand voltage testing branches may also be three, that is, the first case, the second case and the third case are all present.

Through the detection mode, whether the digital multimeter and the voltage-withstanding instrument are normal or not, whether the loops from the digital multimeter to different ports are normal or not and whether the loops from the voltage-withstanding instrument to different connecting ports are normal or not can be conveniently detected, and the detection accuracy can be ensured.

Optionally, referring to fig. 3, fig. 3 is another schematic structural diagram of the first testing branch 1 according to an embodiment of the present disclosure. The first testing branch 1 is specifically a first insulation withstand voltage testing branch, the first insulation withstand voltage testing branch further includes a first ground port 21, and the other end of the first resistor R1, which is connected to the end of the first switch K1, is connected to the first ground port 21; the control module 10 is further configured to control opening and closing of the first switch K1 to implement a test on the withstand voltage instrument and a loop between the positive electrode connection port 11, the first ground port 21, and the withstand voltage instrument.

In the embodiment of the present application, since the digital multimeter and the dielectric withstand voltage tester inside the battery detection device are connected to both the positive connection port 11 and the first ground port 21 during the point detection process, the control module 10 can implement the measurement of the digital multimeter and the dielectric withstand voltage tester on the first resistor R1 by controlling the closing of the first switch K1. Because the positive connection port 11 can be a first high-voltage positive port, a first fast-charging positive port, or a first four-wheel-drive positive port, when the positive connection port 11 is a different port, the measurement process is the same as the process of the positive and negative connection ports 12 with the digital multimeter and the dielectric withstand voltage meter, such as: when the positive connection port 11 is a first high-voltage positive port, if the resistance value of the first resistor R1 measured by using the resistance test file of the digital multimeter is 8M Ω, it indicates that the digital multimeter is normal, and the loops from the digital multimeter to the first high-voltage positive port and the first high-voltage negative port are normal; if the first resistor R1 is measured to be 8M omega by using an insulation resistance test file of the insulation voltage withstand instrument, the situation that a loop from the insulation voltage withstand instrument to the first high-voltage positive electrode port and the first high-voltage negative electrode port is normal is shown, and the insulation resistance test function of the insulation voltage withstand instrument is normal; if the first resistor R1 is measured by using a 1000V withstand voltage test file of the withstand voltage tester, and the measured leakage current is 0.125mA, the circuit from the withstand voltage tester to the first high-voltage positive electrode port and the first high-voltage negative electrode port is normal, and the withstand voltage test function of the circuit is normal.

Through the mode, whether the loop of the digital multimeter to different ports and the first ground wire port 21 is normal or not and whether the loop of the voltage withstand instrument to different connecting ports and the first ground wire port 21 is normal or not can be conveniently detected, and the detection accuracy can be ensured.

Optionally, referring to fig. 4, fig. 4 is a schematic structural diagram of the second testing branch 2 according to an embodiment of the present disclosure. Second test branch 2 specifically is second withstand voltage test branch, and wherein, second withstand voltage test branch includes: a second ground port 31, a third ground port 32, a second switch K2 and a second resistor R2, wherein a first end and a second end of the second switch K2 are respectively connected with the second ground port 31 and the second resistor R2, and a control end of the second switch K2 is connected with the control module 10; the other end of the second resistor R2 is connected to the third ground port 32; the control module 10 is configured to control opening and closing of the second switch K2 to implement a test on the withstand voltage tester of the battery detection apparatus and a loop between the second ground port 31, the third ground port 32, and the withstand voltage tester.

In the embodiment of the present application, since the digital multimeter and the dielectric withstand voltage tester inside the battery detection device are connected to both the second ground port 31 and the third ground port 32 during the point detection process, the control module 10 can implement the measurement of the digital multimeter and the dielectric withstand voltage tester on the second resistor R2 by controlling the opening and closing of the second switch K2.

In the detection process, if the resistance value of the second resistor R2 is measured to be 4M omega by using a resistance test grade of the digital multimeter, the digital multimeter is normal, and the loops from the digital multimeter to the second ground port 31 and the third ground port 32 are normal; if the second resistance R2 is measured to be 4M Ω by using the insulation resistance test file of the voltage withstand tester, it indicates that the loops from the voltage withstand tester to the second ground port 31 and the third ground port 32 are normal, and the insulation resistance test function is normal; if the second resistor R2 is measured by using the 1000V withstand voltage test file of the withstand voltage tester, and the measured leakage current is 0.25mA, it indicates that the loops from the withstand voltage tester to the second ground port 31 and the third ground port 32 are normal, and the withstand voltage test function is normal.

By the mode, whether the loop from the digital multimeter to the second ground port 31 and the third ground port 32 is normal or not and whether the loop from the voltage withstand instrument to the second ground port 31 and the third ground port 32 is normal or not can be conveniently detected, and the detection accuracy can be ensured.

Optionally, please refer to fig. 5, and fig. 5 is a schematic structural diagram of a third testing branch 3 according to an embodiment of the present application. The third testing branch 3 is specifically a first communication testing branch, wherein the first communication testing branch includes a second high-voltage positive port 41, a second high-voltage negative port 42, a first communication high-level port 43, a first communication low-level port 44, a third switch K3 and a fourth switch K4, a first end and a second end of the third switch K3 are respectively connected with the second high-voltage positive port 41 and the first communication high-level port 43, and a control end thereof is connected with the control module 10; a first end and a second end of the fourth switch K4 are respectively connected with the second high-voltage negative port 42 and the first communication low-level port 44, and a control end thereof is connected with the control module 10; the control module 10 is configured to control the third switch K3 and the fourth switch K4 to open and close, so as to implement a test on a communication signal corresponding to the first communication test branch.

In the embodiment of the present application, during the measurement process, the digital multimeter in the battery detection apparatus is connected to the second high-voltage positive port 41 and the second high-voltage negative port 42, and the communication module 201 inside the battery detection apparatus is correspondingly connected to the first communication high-level port 43 and the first communication low-level port 44, so that the control module 10 can make the digital multimeter measure the resistance value between the first communication high-level port 43 and the first communication low-level port 44 by controlling the third switch K3 and the fourth switch K4 to be closed simultaneously. By determining the resistance value, it can be determined whether the communication module 201 in the battery detection device is normal, for example, if the communication module 201 has a terminal resistor of 120 Ω, and if the digital multimeter detects that the value is 120 Ω, it indicates that the signal access of the communication module 201 is good. Through the point inspection mode, the communication module 201 in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

Optionally, please refer to fig. 6, and fig. 6 is a schematic structural diagram of a fourth testing branch 4 according to an embodiment of the present application. Fourth test branch 4 specifically is first power test branch, and wherein, first power test branch includes: a first power supply positive electrode port 51, a first power supply negative electrode port 52, a third high-voltage positive electrode port 53, a third high-voltage negative electrode port 54, a fifth switch K5 and a sixth switch K6, wherein a first end and a second end of the fifth switch K5 are respectively connected with the first power supply positive electrode port 51 and the third high-voltage positive electrode port 53, and control ends of the fifth switch K5 are connected with the control module 10; a first end and a second end of the sixth switch K6 are respectively connected with the first power supply negative electrode port 52 and the third high-voltage negative electrode port 54, and a control end thereof is connected with the control module 10; the control module 10 is used for controlling the opening and closing of the fifth switch K5 and the sixth switch K6 to test the power supply signal of the battery detection device.

In the embodiment of the present application, because during the point detection process, the digital multimeter in the battery detection apparatus is connected to the third high-voltage positive terminal port 53 and the third high-voltage negative terminal port 54, and the power module 202 inside the battery detection apparatus is correspondingly connected to the first power positive terminal port 51 and the first power negative terminal port 52, the control module 10 can make the DCV dc voltage test stage of the digital multimeter measure the voltage value between the first power positive terminal port 51 and the first power negative terminal port 52 by controlling the fifth switch K5 and the sixth switch K6 to be closed simultaneously. In addition, since the first power positive terminal 51 and the first power negative terminal 52 are powered by 12V, when the digital multimeter detects that the voltage is in the range of 11V to 14V, it can indicate that the power module 202 in the battery detection device is powered normally. Through the point inspection mode, the power module 202 in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

Optionally, please refer to fig. 7, and fig. 7 is a schematic structural diagram of a fifth testing branch 5 according to an embodiment of the present application. Fifth test branch 5 specifically is second power supply test branch, and wherein, second power supply test branch includes: the power supply comprises a second power supply positive electrode port 61, a second power supply negative electrode port 62 and a first indicator light, wherein the second power supply positive electrode port 61 and the second power supply negative electrode port 62 are connected with the control module 10, and the first indicator light is arranged on the control module 10; the on/off of the first indicator light is used to indicate whether the second power supply test branch supplies power to the control module 10 normally.

In the embodiment of the present application, in the process of performing the spot inspection, the power module 202 in the battery inspection apparatus is connected to both the second power positive port 61 and the second power negative port 62, and both the second power positive port 61 and the second power negative port 62 are connected to the control module 10, and the first indicator light is disposed on the control module 10, so when the first indicator light is turned on, it can be determined that the power module 202 in the battery inspection apparatus supplies power to the spot inspection apparatus 100 normally, that is, the power module 202 is normal; on the contrary, if the first indicator light is turned off, it can be determined that the power module 202 supplies power to the pointing device 100 abnormally, i.e. the power module 202 is abnormal. Through the bright of first pilot lamp and going out, can judge whether above-mentioned power module 202 is normal conveniently to can avoid dismantling battery detection device because of the point is examined, and then improve the point and examined efficiency.

Optionally, please refer to fig. 8, and fig. 8 is a schematic structural diagram of a sixth testing branch 6 according to an embodiment of the present application. The sixth testing branch 6 is specifically a functional testing branch, wherein the functional testing branch includes a functional testing port 71, a third power supply negative port 72, a fourth high-voltage positive port 73, a fourth high-voltage negative port 74, a seventh switch K7 and an eighth switch K8, a first end and a second end of the seventh switch K7 are respectively connected with the functional testing port 71 and the fourth high-voltage positive port 73, and a control end thereof is connected with the control module 10; a first end and a second end of the eighth switch K8 are respectively connected with the third power supply negative electrode port 72 and the fourth high-voltage negative electrode port 74, and a control end thereof is connected with the control module 10; the control module 10 is used for controlling the seventh switch K7 and the eighth switch K8 to open and close, so as to test the function of the battery detection device.

In the embodiment of the present application, during the point detection process, the digital multimeter inside the battery detection apparatus is connected to both the fourth high voltage positive port 73 and the fourth high voltage negative port 74, the power module 202 is connected to the third power negative port 72, and the function module 203 is connected to the function test port 71, so that the control module 10 can make the digital multimeter measure the value between the function test port 71 and the third power negative port 72 by controlling the seventh switch K7 and the eighth switch K8 to be closed at the same time. By determining this value, it is possible to determine whether or not the function block 203 in the battery detection device is normal. The functional module 203 may have various options according to actual situations, such as a PWM (Pulse Width Modulation) signal generating module, a pull-down resistor module, and the like.

As an optional implementation manner, the functional module 203 is a PWM signal generating module, that is, the PWM signal generating module in the battery detection apparatus is connected to the functional test port 71 of the point detection apparatus 100, during the test, a DCV dc voltage test level of the digital multimeter is used to measure a voltage value between the functional test port 71 and the third power negative terminal port 72, and if the measured voltage value is in a range of 8.6V to 10.6V, it indicates that the PWM signal output by the PWM signal generating module is normal.

As an optional implementation manner, the functional module 203 is a pull-down resistor module, that is, the pull-down resistor module in the battery detection apparatus is connected to the functional test port 71 of the point detection apparatus 100, during the test, a resistance test profile of the digital multimeter is used to measure a resistance value between the functional test port 71 and the third power negative port 72, and if the measured resistance value is the resistance value of the pull-down resistor in the pull-down resistor module, it indicates that the signal output by the pull-down resistor module is normal.

Through the point inspection mode, the functional module 203 in the battery detection device can be conveniently and accurately detected, and the detection efficiency can be improved.

The above embodiments are all embodiments in which individual functions of the battery test apparatus are tested. In practical use, in order to simultaneously detect multiple functions of the battery detection device, the above embodiments may be directly combined or part of the branches of the above embodiments may be multiplexed. A specific case of multi-branch multiplexing is as follows:

referring to fig. 9, fig. 9 is a diagram illustrating an example of the point inspection apparatus 100 for testing the high-voltage withstand voltage function, the two communication modules 201, the power module 202, the pull-up resistor, and the pulse function of the battery inspection apparatus.

Optionally, the n test branches include: the high-voltage insulation and voltage resistance testing device comprises a high-voltage insulation and voltage resistance testing branch circuit, a second communication testing branch circuit, a third power supply testing branch circuit, a pulse function testing branch circuit and a pull-up resistance testing branch circuit. And the second communication test branch, the third power supply test branch, the pulse function test branch and the pull-up resistance test branch are subjected to switch multiplexing.

Wherein, high voltage insulation withstand voltage test branch road includes: a fifth high-voltage positive electrode port 81, a fifth high-voltage negative electrode port 82, a ninth switch K9 and a third resistor R3, wherein a first end and a second end of the ninth switch K9 are respectively connected with the fifth high-voltage positive electrode port 81 and the third resistor R3, and a control end of the ninth switch K9 is connected with the control module 10; the other end of the third resistor R3 is connected with a fifth high-voltage negative electrode; the control module 10 is configured to control opening and closing of the ninth switch K9 to implement a test on the voltage withstand tester of the battery detection apparatus and a loop between the fifth high-voltage positive electrode port 81 and the fifth high-voltage negative electrode port 82 and the voltage withstand tester.

The second communication test branch comprises: a second communication high level port 83, a second communication low level port 84, a tenth switch K10, an eleventh switch K11, a twelfth switch K12 and a thirteenth switch K13, wherein a first end and a second end of the tenth switch K10 are respectively connected with first ends of the second communication high level port 83 and the eleventh switch K11, and control ends of the tenth switch K10 are connected with the control module 10; a second end of the eleventh switch K11 is connected to the fifth high-voltage positive electrode port 81, and a control end thereof is connected to the control module 10; a first end and a second end of the twelfth switch K12 are connected to the second communication low level port 84 and the first end of the thirteenth switch K13, respectively, and a control end thereof is connected to the control module 10; a second end of the thirteenth switch K13 is connected to the fifth high-voltage negative port 82, and a control end thereof is connected to the control module 10; the control module 10 is configured to control the tenth switch K10, the eleventh switch K11, the twelfth switch K12, and the thirteenth switch K13 to open and close, so as to implement a test on a communication signal corresponding to the second communication test branch.

The third communication test branch includes: a third communication high level port 85, a third communication low level port 86, a fourteenth switch K14 and a fifteenth switch K15, wherein a first end of the fourteenth switch K14 is connected to the third communication high level port 85, a second end thereof is connected to a connection line between the tenth switch K10 and the eleventh switch K11, and a control end thereof is connected to the control module 10; a first end of the fifteenth switch K15 is connected to the third communication low level port 86, a second end thereof is connected to the connection line between the twelfth switch K12 and the thirteenth switch K13, and a control end thereof is connected to the control module 10; the control module 10 is configured to control the opening and closing of the eleventh switch K11, the thirteenth switch K13, the fourteenth switch K14, and the fifteenth switch K15, so as to implement a test on a communication signal corresponding to the third communication test branch.

The third power supply testing branch comprises: the fourth power supply positive port 87, the fourth power supply negative port 88, the sixteenth switch K16, the seventeenth switch K17 and the second indicator light are all connected with the control module 10, and the second indicator light is arranged on the control module 10; a first end of the sixteenth switch K16 is connected to the connection line between the fourth power supply positive electrode port 87 and the control module 10, a second end thereof is connected to the fifth high-voltage positive electrode port 81, and a control end thereof is connected to the control module 10; a first end of the seventeenth switch K17 is connected to the connection line between the fourth power supply negative port 88 and the control module 10, a second end thereof is connected to the fifth high voltage negative port 82, and a control end thereof is connected to the control module 10; the control module 10 is used for controlling the sixteenth switch K16 and the seventeenth switch K17 to open and close so as to test a power supply signal of the battery detection device; the on/off of the second indicator light is used to indicate whether the third power supply test branch supplies power to the control module 10 normally.

The pulse function test branch comprises: a pulse function test port 89 and an eighteenth switch K18, wherein a first end of the eighteenth switch K18 is connected with the pulse function test port 89, a second end thereof is connected with a connection line between the tenth switch K10 and the eleventh switch K11, and a control end thereof is connected with the control module 10; the control module 10 is used for controlling the opening and closing of the eleventh switch K11, the seventeenth switch K17 and the eighteenth switch K18 to test the functions of the battery detection device.

The pull-up resistance test branch comprises: a pull-up resistance test port 90 and a nineteenth switch K19, wherein a first end of the nineteenth switch K19 is connected with the pull-up resistance test port 90, a second end thereof is connected with a connection line between the tenth switch K10 and the eleventh switch K11, and a control end thereof is connected with the control module 10; the control module 10 is used for controlling the opening and closing of the eleventh switch K11, the seventeenth switch K17 and the nineteenth switch K19 to test the functions of the battery detection device.

The second communication test branch, the third communication test branch, the pulse function test branch and the pull-up resistance test branch are multiplexed with a fifth high-voltage positive port 81, and the second communication test branch and the third communication test branch are multiplexed with a fifth high-voltage negative port 82.

In the point inspection process, a digital multimeter and an insulation withstand voltage tester in the battery detection device are connected with a fifth high-voltage positive port 81 and a fifth high-voltage negative port 82, two communication modules 201 in the battery detection device are correspondingly connected with a second communication high-level port 83, a second communication low-level port 84, a third communication high-level port 85 and a third communication low-level port 86 respectively, a power supply module 202 in the battery detection device is connected with a fourth power supply positive port 87 and a fourth power supply negative port 88, and two function modules 203 in the battery detection device are correspondingly connected with a pulse function test port 89 and a pull-up resistance test port 90 respectively.

Therefore, the control module 10 can realize the use of the high-voltage insulation and voltage resistance test branch by controlling the closing of the ninth switch K9; the control module 10 can realize the use of the second communication test branch by controlling the tenth switch K10, the eleventh switch K11, the twelfth switch K12 and the thirteenth switch K13 to be closed simultaneously; the control module 10 can realize the use of the third communication test branch by controlling the eleventh switch K11, the thirteenth switch K13, the fourteenth switch K14 and the fifteenth switch K15 to be closed simultaneously; the control module 10 controls the sixteenth switch K16 and the seventeenth switch K17 to be turned on simultaneously, so that the third power supply testing branch can be used, and in addition, whether the power supply module 202 is normal or not can be judged by judging whether the second indicator light is on or off; the control module 10 can make the digital multimeter measure the resistance between the pulse function test port 89 and the fourth power supply negative electrode port 88 by controlling the eleventh switch K11, the seventeenth switch K17 and the eighteenth switch K18 to be closed simultaneously, and can judge whether the function module 203 connected with the pulse function test port 89 in the battery detection device is normal or not by judging the resistance; the control module 10 can make the digital multimeter measure the resistance between the pull-up resistance test port 90 and the fourth power supply negative electrode port 88 by controlling the eleventh switch K11, the seventeenth switch K17 and the nineteenth switch K19 to be closed simultaneously, and can judge whether the functional module 203 connected with the pull-up resistance test port 90 in the battery detection device is normal or not by judging the resistance.

The specific measurement mode of the high-voltage insulation and voltage withstand test branch refers to the specific measurement mode of the first insulation and voltage withstand test branch, the specific measurement mode of the second communication test branch and the third communication test branch refers to the specific measurement mode of the first common test branch, the specific measurement mode of the third power supply test branch refers to the specific measurement mode of the first power supply branch and the second power supply branch, and the specific measurement mode of the pulse function test branch and the pull-up resistance test branch refers to the specific measurement mode of the function test branch, which is not described herein again.

Through the mode, after the battery detection device is connected with each port of the point detection device 100, whether each module of the battery detection device is normal or not can be sequentially measured through the point detection device 100, and compared with the existing mode that manual measurement and correction are carried out after battery detection equipment is disassembled, the point detection efficiency of the battery detection device can be improved through the mode, and the point detection accuracy is guaranteed.

Optionally, another function may be further superimposed on the embodiment of fig. 9, please refer to fig. 10, and fig. 10 is a schematic structural diagram of a third spot inspection device 100 provided in the embodiment of the present application. The n test branches further include: and (4) quickly charging an insulation withstand voltage test branch. Wherein, fill withstand voltage test branch road soon includes: a second fast-charging positive electrode port 91, a second fast-charging negative electrode port 92, a twentieth switch K20 and a fourth resistor R4, wherein a first end and a second end of the twentieth switch K20 are respectively connected with the second fast-charging positive electrode port 91 and the fourth resistor R4, and a control end of the twentieth switch K20 is connected with the control module 10; the other end of the fourth resistor R4 is connected with the second fast negative electrode port 92; the control module 10 is further configured to control the twentieth switch K20 to open and close, so as to implement a test on the voltage withstand instrument of the battery detection apparatus and a loop between the second fast charging positive electrode port 91 and the second fast charging negative electrode port 92 and the voltage withstand instrument.

In the embodiment of the present application, the control module 10 may implement the use of the rapid charging insulation withstand voltage test branch by controlling the closing of the twentieth switch K20. For a specific measurement mode of the fast charging withstand voltage test branch, reference is made to the specific measurement mode of the first withstand voltage test branch, which is not described herein again.

Optionally, another function may be further superimposed on the embodiment of fig. 10, please refer to fig. 11, and fig. 11 is a schematic structural diagram of a fourth point inspection device 100 provided in the embodiment of the present application. The n test branches further include: and a four-wheel drive insulation voltage resistance test branch. Wherein, four drive dielectric strength test branch roads include: a second four-wheel-drive positive electrode port 93, a second four-wheel-drive negative electrode port 94, a twenty-first switch K21 and a fifth resistor R5, wherein a first end and a second end of the twenty-first switch K21 are respectively connected with the second four-wheel-drive positive electrode port 93 and the fifth resistor R5, and a control end of the twenty-first switch K21 is connected with the control module 10; the other end of the fifth resistor R5 is connected with a second four-wheel-drive negative electrode port 94; the control module 10 is further configured to control the twenty-first switch K21 to open and close, so as to implement a test on a voltage withstand tester of the battery detection apparatus and a loop between the second four-wheel-drive positive electrode port 93 and the second four-wheel-drive negative electrode port 94 and the voltage withstand tester.

In the embodiment of the present application, the control module 10 may implement the use of the four-wheel drive insulation voltage withstand test branch circuit by controlling the closing of the twenty-first switch K21. For a specific measurement mode of the four-drive voltage-withstand test branch, reference is made to the specific measurement mode of the first voltage-withstand test branch, and details thereof are not repeated here.

Optionally, another function may be further superimposed on the embodiment of fig. 11, please refer to fig. 12, and fig. 12 is a fifth point inspection device 100 provided in the embodiment of the present application. The n test branches further include: and a grounding insulation and voltage resistance test branch circuit. Wherein, ground connection insulating withstand voltage test branch road includes: a fourth ground port 95, a fifth ground port 96, a twenty-second switch K22 and a sixth resistor R6, wherein the first end and the second end of the twenty-second switch K22 are respectively connected with the fourth ground port 95 and the sixth resistor R6, and the control end of the twenty-second switch is connected with the control module 10; the other end of the sixth resistor R6 is connected to a fifth ground port 96; the fourth ground port 95 is connected with the other end of the third resistor R3, which is connected with the ninth switch K9 end, the other end of the fourth resistor R4, which is connected with the twentieth switch K20 end, and the other end of the fifth resistor R5, which is connected with the twenty-first switch K21 end; the control module 10 is further configured to control opening and closing of the twenty-second switch K22 to implement a test on the voltage withstand instrument of the battery detection apparatus and a loop between the fourth ground port 95 and the fifth ground port 96 and the voltage withstand instrument.

In the embodiment of the present application, the control module 10 may implement the application of the ground-to-ground dielectric-insulator-voltage test branch by controlling the closing of the twenty-second switch K22. For a specific measurement method of the ground-to-ground voltage-to-insulator test branch, reference is made to the specific measurement method of the second voltage-to-insulator test branch, which is not described herein again.

In addition, for a specific test mode of using a digital multimeter and an insulation withstand voltage tester in the battery test device to respectively measure the fifth high-voltage positive electrode port 81 and the fourth ground electrode port 95, the second quick-charging positive electrode port 91 and the fourth ground electrode port 95, and the second fourth driving positive electrode port 93 and the fourth ground electrode port 95, reference is made to the specific measurement branch of the first insulation withstand voltage test branch.

Optionally, referring to fig. 13, fig. 13 is a schematic structural diagram of a sixth spot inspection device 100 according to an embodiment of the present application. The communication circuit 20 includes a fourth communication high-level port 97 and a fourth communication low-level port 98, and both the fourth communication high-level port 97 and the fourth communication low-level port 98 are connected to the control module 10; the communication circuit 20 is used for sending a signal sent by the battery detection device to the control module 10.

In the embodiment of the present application, in the process of the spot detection, the communication module 201 in the battery detection device is connected to both the fourth communication high-level port 97 and the fourth communication low-level port 98, and both the fourth communication high-level port 97 and the fourth communication low-level port 98 are connected to the control module 10, so that the communication module 201 can send a switch opening and closing instruction to the control module 10 through the communication circuit 20, and the control module 10 can also confirm that the communication module 201 is normal when making a corresponding switch opening and closing action according to the instruction.

Optionally, referring to fig. 14, fig. 14 is a schematic structural diagram of a seventh spot inspection device 100 according to an embodiment of the present application. The control module 10 comprises a communication control submodule 99 and a switch control submodule 101, wherein the communication control submodule 99 is connected with a fourth communication high-level port 97, a fourth communication low-level port 98, a fourth power supply positive electrode port 87, a fourth power supply negative electrode port 88 and the switch control submodule 101; the switch control submodule 101 is connected with all switches in the n test branches; the communication control submodule 99 is used for receiving a switch opening and closing instruction sent by the battery detection device through the communication circuit 20 and sending the instruction to the switch control submodule 101; the switch control submodule 101 is configured to receive an instruction sent by the communication submodule, and control opening and closing of the switch according to the instruction.

In the embodiment of the present application, the bus high-level interface CAN _ H and the bus low-level interface CAN _ L of the communication control sub-module 99 are respectively connected to the fourth communication high-level port 97 and the fourth communication low-level port 98, and the positive power interface VCC + and the negative power interface VCC-thereof are respectively connected to the fourth power positive port 87 and the fourth power negative port 88. The positive power interface VCC + and the negative power interface VCC-of the switch control sub-module 101 are connected to the fourth power positive port 87 and the fourth power negative port 88, respectively. The communication interfaces TX and RX of the communication control sub-module 99 and the switch control sub-module 101 are correspondingly connected.

The communication between the battery detection device and the point detection device 100 can be realized more efficiently by arranging the communication control submodule 99; the switches in the n test branches can be controlled more conveniently by setting the switch control sub-module 101.

Optionally, the pointing device 100 further includes a wake-up signal port 102 and a third indicator light D1. Referring to fig. 15, fig. 15 is a schematic structural diagram of an eighth point inspection device 100 according to an embodiment of the present disclosure. One end of the third indicator light D1 is connected with the wake-up signal port 102, and the other end thereof is connected with the fourth power supply negative electrode port 88; the on and off of the third indicator light D1 is used to indicate whether the wake-up signal output by the battery detection device is normal.

In the embodiment of the present application, since the wake-up signal module 204 of the battery detection device is connected to the wake-up signal port 102 of the pointing device 100 during the pointing process, when the detection device controls the output of the wake-up signal, it determines whether the wake-up signal is normal according to the on/off status of the third indicator light D1, that is, if the third indicator light D1 is on, it represents that the wake-up signal output by the battery detection device is normal.

In addition, the fourth communication high level port 97, the fourth communication low level port 98, the second communication high level port 83, the third communication high level port 85, the pulse function test port 89, the pull-up resistance test port 90, the second communication low level port 84, the third communication low level port 86, the fourth power positive port 87, the fourth power negative port 88 and the wake-up signal port 102 may be integrated into one low voltage connector, which is connected to the battery test apparatus.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Claims

1. A spot inspection apparatus, the apparatus comprising:

a control module;

the communication circuit is connected with the control module and the battery detection device;

the battery detection device comprises n test branches, each test branch is connected with the battery detection device, a switch is arranged in each test branch, the switch in each test branch is connected with the control module, n is a positive integer and is more than or equal to 1;

the control module is used for receiving an opening and closing instruction of the switch sent by the battery detection device through the communication circuit and controlling the opening and closing of the switch in the test branch according to the opening and closing instruction; and detecting each function of the battery detection device by opening and closing the switch in each test branch.

2. The spot inspection device according to claim 1, wherein the n test branches comprise: a first dielectric withstand voltage test branch, the first dielectric withstand voltage test branch includes: the first switch comprises a positive electrode connecting port, a negative electrode connecting port, a first switch and a first resistor, wherein a first end and a second end of the first switch are respectively connected with the positive electrode connecting port and the first resistor, and a control end of the first switch is connected with the control module; the other end of the first resistor is connected with the negative electrode connecting port; the control module is used for realizing the test of an insulating withstand voltage instrument of the battery detection device and loops among the anode connection port, the cathode connection port and the insulating withstand voltage instrument by controlling the opening and closing of the first switch; the positive electrode connecting port is a first high-voltage positive electrode port, and the negative electrode connecting port is a first high-voltage negative electrode port; or the positive electrode connecting port is a first fast-charging positive electrode port, and the negative electrode connecting port is a first fast-charging negative electrode port; or, the positive connection port is a first four-wheel-drive positive port, and the negative connection port is a first four-wheel-drive negative port.

3. The point inspection device according to claim 2, wherein the first insulation withstand voltage test branch further comprises a first ground port, and the other end of the first resistor opposite to the first switch end is connected with the first ground port; the control module is further used for controlling the first switch to be opened and closed so as to test the voltage withstand instrument and loops among the positive electrode connecting port, the first ground wire port and the voltage withstand instrument.

4. The spot inspection device according to claim 1, wherein the n test branches comprise: a second withstand voltage test branch circuit, the second withstand voltage test branch circuit comprising: the first end and the second end of the second switch are respectively connected with the second ground port and the second resistor, and the control end of the second switch is connected with the control module; the other end of the second resistor is connected with the port of the third ground wire; the control module is used for controlling the opening and closing of the second switch to realize the test of the voltage withstand instrument of the battery detection device and the loops between the second ground port, the third ground port and the voltage withstand instrument.

5. The spot inspection device according to claim 1, wherein the n test branches comprise: the first communication test branch comprises a second high-voltage positive port, a second high-voltage negative port, a first communication high-level port, a first communication low-level port, a third switch and a fourth switch, wherein the first end and the second end of the third switch are respectively connected with the second high-voltage positive port and the first communication high-level port, and the control end of the third switch is connected with the control module; a first end and a second end of the fourth switch are respectively connected with the second high-voltage negative port and the first communication low-level port, and a control end of the fourth switch is connected with the control module; the control module is used for controlling the third switch and the fourth switch to be opened and closed so as to realize the test of the communication signal corresponding to the first communication test branch.

6. The spot inspection device according to claim 1, wherein the n test branches comprise: a first power supply test branch, the first power supply test branch comprising: the first switch is connected with the first power supply positive electrode port, the second switch is connected with the third high-voltage positive electrode port, and the control end of the fifth switch is connected with the control module; a first end and a second end of the sixth switch are respectively connected with the first power supply negative electrode port and the third high-voltage negative electrode port, and a control end of the sixth switch is connected with the control module; the control module is used for controlling the opening and closing of the fifth switch and the sixth switch to realize the test of the power supply signal of the battery detection device.

7. The spot inspection device according to claim 1, wherein the n test branches comprise: a second power supply test branch, the second power supply test branch comprising: the power supply comprises a first power supply positive port, a first power supply negative port and a first indicator light, wherein the first power supply positive port and the first power supply negative port are connected with the control module; and the on and off of the first indicator light is used for indicating whether the second power supply testing branch supplies power to the control module normally or not.

8. The spot inspection device according to claim 1, wherein the n test branches comprise a functional test branch, the functional test branch comprises a functional test port, a third power negative port, a fourth high-voltage positive port, a fourth high-voltage negative port, a seventh switch and an eighth switch, a first end and a second end of the seventh switch are respectively connected with the functional test port and the fourth high-voltage positive port, and a control end of the seventh switch is connected with the control module; a first end and a second end of the eighth switch are respectively connected with the third power supply negative electrode port and the fourth high-voltage negative electrode port, and a control end of the eighth switch is connected with the control module; the control module is used for controlling the seventh switch and the eighth switch to be opened and closed so as to test the functions of the battery detection device.

9. The spot inspection device according to claim 1, wherein the n test branches comprise: the high-voltage insulation and voltage resistance testing device comprises a high-voltage insulation and voltage resistance testing branch, a second communication testing branch, a third power supply testing branch, a pulse function testing branch and a pull-up resistance testing branch;

the high-voltage insulation withstand voltage test branch comprises: the first end and the second end of the ninth switch are respectively connected with the fifth high-voltage positive electrode port and the third resistor, and the control end of the ninth switch is connected with the control module; the other end of the third resistor is connected with the fifth high-voltage negative electrode; the control module is used for realizing the test of the voltage withstand instrument of the battery detection device and the loops between the fifth high-voltage positive electrode port, the fifth high-voltage negative electrode port and the voltage withstand instrument by controlling the opening and closing of the ninth switch;

the second communication test branch comprises: the first end and the second end of the tenth switch are respectively connected with the second communication high level port and the first end of the eleventh switch, and the control end of the tenth switch is connected with the control module; the second end of the eleventh switch is connected with the fifth high-voltage positive electrode port, and the control end of the eleventh switch is connected with the control module; a first end and a second end of the twelfth switch are respectively connected with the second communication low-level port and the first end of the thirteenth switch, and a control end of the twelfth switch is connected with the control module; a second end of the thirteenth switch is connected with the fifth high-voltage negative port, and a control end of the thirteenth switch is connected with the control module; the control module is used for controlling the tenth switch, the eleventh switch, the twelfth switch and the thirteenth switch to be switched on and off so as to realize the test of the communication signal corresponding to the second communication test branch;

the third communication test branch includes: a third communication high level port, a third communication low level port, a fourteenth switch and a fifteenth switch, wherein a first end of the fourteenth switch is connected to the third communication high level port, a second end of the fourteenth switch is connected to a connection line between the tenth switch and the eleventh switch, and a control end of the fourteenth switch is connected to the control module; a first end of the fifteenth switch is connected with the third communication low-level port, a second end of the fifteenth switch is connected with a connecting line between the twelfth switch and the thirteenth switch, and a control end of the fifteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the thirteenth switch, the fourteenth switch and the fifteenth switch to be switched on and off so as to realize the test of the communication signal corresponding to the third communication test branch;

the third power supply test branch comprises: the fourth power supply positive terminal port and the fourth power supply negative terminal port are connected with the control module, and the second indicator lamp is arranged on the control module; a first end of the sixteenth switch is connected with a connecting line between the fourth power supply positive electrode port and the control module, a second end of the sixteenth switch is connected with the fifth high-voltage positive electrode port, and a control end of the sixteenth switch is connected with the control module; a first end of the seventeenth switch is connected with a connecting line between the fourth power supply negative electrode port and the control module, a second end of the seventeenth switch is connected with the fifth high-voltage negative electrode port, and a control end of the seventeenth switch is connected with the control module; the control module is used for controlling the sixteenth switch and the seventeenth switch to be switched on and off so as to realize the test of the power supply signal of the battery detection device; the on and off of the second indicator light is used for indicating whether a third power supply testing branch supplies power to the control module normally or not;

the pulse function test branch comprises: the first end of the eighteenth switch is connected with the pulse function test port, the second end of the eighteenth switch is connected with a connecting line between the tenth switch and the eleventh switch, and the control end of the eighteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the seventeenth switch and the eighteenth switch to be switched on and off so as to test the function of the battery detection device;

the pull-up resistance test branch comprises: a pull-up resistance test port and a nineteenth switch, wherein a first end of the nineteenth switch is connected with the pull-up resistance test port, a second end of the nineteenth switch is connected with a connecting line between the tenth switch and the eleventh switch, and a control end of the nineteenth switch is connected with the control module; the control module is used for controlling the eleventh switch, the seventeenth switch and the nineteenth switch to be opened and closed so as to test the functions of the battery detection device.

10. The spot inspection device according to claim 9, further comprising a wake-up signal port and a third indicator light, wherein one end of the third indicator light is connected to the wake-up signal port, and the other end of the third indicator light is connected to the fourth power supply negative electrode port; and the on and off of the third indicator light is used for indicating whether the wake-up signal output by the battery detection device is normal or not.