CN211293113U - Test tool of battery management system - Google Patents
Test tool of battery management system Download PDFInfo
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- CN211293113U CN211293113U CN201922118308.7U CN201922118308U CN211293113U CN 211293113 U CN211293113 U CN 211293113U CN 201922118308 U CN201922118308 U CN 201922118308U CN 211293113 U CN211293113 U CN 211293113U
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- 238000012360 testing method Methods 0.000 title claims abstract description 92
- 238000004088 simulation Methods 0.000 claims abstract description 112
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The utility model relates to a battery management system technical field, concretely relates to battery management system's test fixture, test fixture with battery management system's test equipment connects, include: a target circuit board; the parameter simulation units are arranged on the target circuit board; the parameter simulation unit is used for simulating the operation parameters of the battery management system; the operating parameters include voltage, temperature, and current; and one end of the communication simulation unit is connected with each parameter simulation unit, and the other end of the communication simulation unit is connected with the test equipment. The utility model discloses a set up a plurality of parameter simulation units on the target line board, and will a plurality of parameter simulation units are connected with test equipment and host computer to establish communication connection. The functions to be realized by the master control and the slave control for testing the battery management system in the prior art are integrated on the target circuit board, so that the testing tool has universality.
Description
Technical Field
The utility model relates to a battery management system technical field, concretely relates to battery management system's test fixture.
Background
In a Battery Management System (Battery Management System, BMS for short), the models designed and produced by BMS manufacturers at the present stage are mainly classified into: BMS master control, BMS slave control. The BMS has the main control functions of high and low level simulation, load simulation, high voltage simulation and the like; the slave control function of the BMS comprises voltage simulation, temperature simulation and the like. For the two types of machines, a third-party professional Hardware-In-the-Loop (HIL) testing technology is usually adopted to establish a "virtual BMS" testing platform to implement the above functions, which may also be referred to as BMS HIL. However, the test platform is in one-to-one correspondence with the three test machine types. This is due to the functional fixity and incompatibility of the HIL test technology itself, i.e., the above-described BMS HIL has no commonality to various tester models of BMS. In the BMS master-slave all-in-one machine in the prior art, the BMS master control and the BMS slave control are connected in a wiring mode, so that all functions of the BMS master-slave all-in-one machine are achieved, and the BMS master-slave all-in-one machine is complex in wiring and large in equipment size.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a battery management system's test fixture to the test system who solves current battery management is difficult to general problem.
The embodiment of the utility model provides an aspect provides a battery management system's test fixture, test fixture with battery management system's test equipment connects, include: a target circuit board; the parameter simulation units are arranged on the target circuit board; the parameter simulation unit is used for simulating the operation parameters of the battery management system; the operating parameters include voltage, temperature, and current; and one end of the communication simulation unit is connected with each parameter simulation unit, and the other end of the communication simulation unit is connected with the test equipment.
Optionally, the parameter simulation unit comprises a cell voltage simulation unit; the single voltage simulation unit is provided with a plurality of resistors which are connected in series, the resistors which are connected in series are connected with a first output voltage of a power output unit of the test tool, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the voltage of each battery string in the battery management system.
Optionally, the parameter simulation unit includes a temperature simulation unit, the temperature simulation unit has a temperature sensor, and an output end of the temperature sensor is connected to the test equipment.
Optionally, the parameter simulation unit includes a current simulation unit, the current simulation unit has a plurality of resistors connected in series, the resistors connected in series are connected with the second output voltage of the power output unit of the test fixture, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the current of each battery string in the battery management system.
Optionally, the parameter simulation unit comprises a high-voltage acquisition simulation unit, and the high-voltage acquisition simulation unit is connected with the power output unit of the test tool to simulate the high-voltage acquisition voltage of the battery management system.
Optionally, the parameter simulation unit includes an insulation resistance acquisition simulation unit, and the insulation resistance acquisition simulation unit has a test resistance for simulating an insulation resistance of the battery management system.
Optionally, the parameter simulation unit includes an IO driving simulation unit, and the IO driving simulation unit has a power resistor and is configured to simulate a load of the battery management system.
Optionally, the parameter simulation unit includes an IO detection simulation unit, and the IO detection simulation unit is connected to a preset voltage or grounded and used for simulating a high-low level test.
Optionally, the communication simulation unit is further connected to an upper computer for simulating a communication test.
Optionally, the communication simulation unit includes multiple interface channels, and the interface channels are connected to each other to simulate mutual testing of the interface channels.
The utility model discloses a set up a plurality of parameter simulation units on the target line board, and will a plurality of parameter simulation units are connected with test equipment and host computer to establish communication connection. The parameter simulation units can basically meet parameter functions required by testing of the battery management system on the current market, so that the testing tool can basically meet testing requirements of the battery management system on the current market, and the universality of the testing tool can be further demonstrated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a test fixture of a battery management system provided by the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood in specific instances, and furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The utility model provides a battery management system's test fixture, as shown in FIG. 1, test fixture includes: a target circuit board 1; a plurality of parameter simulation units 2 arranged on the target circuit board; the parameter simulation unit is used for simulating the operation parameters of the battery management system; the operating parameters include voltage, temperature, and current; and one end of the communication simulation unit 3 is connected with each parameter simulation unit, and the other end of the communication simulation unit is connected with the test equipment.
Optionally, the parameter simulation unit 2 includes a cell voltage simulation unit 21; the single voltage simulation unit 21 is provided with a plurality of resistors connected in series, the resistors connected in series are connected with the first output voltage of the power output unit 4 of the test tool, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the voltage of each battery string in the battery management system.
In a specific embodiment, the number of the battery strings in the battery management system is 12, and the test equipment measures that the cell voltages of the battery strings are all 4V. In order to meet the requirement, the first output voltage is set to be 48V, the series resistors are 12 ohmic resistors with equal resistance values and are connected in series, and the voltage at two ends of each series resistor is 4V, that is, the single voltage of each battery string in the battery management system is 4V. In a specific embodiment, the resistors with the resistance value of 40 ohms can be formed by connecting 3 resistors with the resistance value of 120 ohms in parallel, and then the resistors connected in parallel are connected in series to form the 12 resistors with the resistance value of 40 ohms in series.
Optionally, the parameter simulation unit includes a temperature simulation unit 22, the temperature simulation unit 22 has a temperature sensor, and an output end of the temperature sensor is connected to the test equipment.
In a specific embodiment, the input terminals of the temperature sensors may be respectively connected to the 12 ntc thermistors to simulate the cell temperatures of the 12 battery strings. Optionally, the input end of the temperature sensor may be further connected with other objects to simulate the corresponding temperature according to the temperature measured by the testing equipment based on different testing requirements of the battery management system.
Optionally, the parameter simulation unit includes a current simulation unit 23, the current simulation unit 23 has a plurality of resistors connected in series, the resistors connected in series are connected to the second output voltage of the power output unit 4 of the test fixture, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the total current required by the current acquisition function in the battery management system.
In a specific embodiment, the current simulation unit 23 includes: the 2 variable resistors are connected in series and then connected with a second output voltage of the power output unit 4, wherein the second output voltage is 5V, the resistance values of the 2 variable resistors are adjusted to obtain different voltage values, and the voltage value is converted into a current value by the tested battery management system according to preset Hall current sensor parameters so as to simulate current signals of two channels of the two-channel Hall current sensor.
Optionally, the parameter simulation unit includes a high voltage acquisition simulation unit 24, and the high voltage acquisition simulation unit 24 is connected to the power output unit 4 of the test fixture to simulate the high voltage acquisition voltage of the battery management system.
In a specific embodiment, the power output unit 4 provides a high-voltage collection voltage of the battery management system.
Optionally, the parameter simulation unit includes an insulation resistance acquisition simulation unit 25, and the insulation resistance acquisition unit 25 has a test resistance for simulating an insulation resistance of the battery management system.
In a specific embodiment, the test resistor is an adjustable resistor switch matrix, the adjustable resistor switch matrix is an array formed by a plurality of adjustable resistors, and the resistors are selectively connected through a control switch.
Optionally, the parameter simulation unit includes an IO driving simulation unit 26, and the IO driving simulation unit 26 has a power resistor and is configured to simulate a load of the battery management system.
In one embodiment, the power resistor has a power of 10W and a resistance of 25 ohms.
Optionally, the parameter simulation unit includes an IO detection simulation unit 27, and the IO detection simulation unit 27 is connected to a preset voltage or grounded and used for simulating a high-low level test.
In one embodiment, the predetermined voltage is 12V. Optionally, the preset voltage may be provided by the power output unit 4, or may be provided by connecting to an external power source.
Optionally, the communication simulation unit 3 is further connected to an upper computer, and is configured to simulate a communication test.
Optionally, the communication simulation unit 3 includes multiple interface channels, and the interface channels are connected to each other to simulate mutual testing of the interface channels.
In an optional embodiment, the communication simulation unit 3 has 3 interface channels, which are a channel 1, a channel 2 and a channel 3, respectively, and the channel 1 is connected with an upper computer and used for sending a test result to the upper computer; the channel 2 is connected with the parameter simulation units, and the channel 3 is connected with the test equipment. During testing, each parameter simulation unit receives parameter information of the testing equipment through a channel 3, then processes the parameter information through a processor in the tool to obtain simulation parameters of each parameter simulation unit, and sends the simulation parameters to each parameter simulation unit through a channel 2, and each parameter simulation unit carries out corresponding simulation according to the simulation parameters. And, the channel 1 and the channel 2 can perform mutual testing, that is, the testing device and the plurality of parameter simulators can perform mutual testing for mutual control and parameter adjustment.
Optionally, as shown in fig. 1, the test fixture further includes a connector for fixing the test fixture.
The utility model discloses a set up a plurality of parameter simulation units on the target line board, and will a plurality of parameter simulation units are connected with test equipment and host computer to establish communication connection. The parameter simulation units can basically meet parameter functions required by testing of the battery management system on the current market, so that the testing tool can basically meet testing requirements of the battery management system on the current market, and the universality of the testing tool can be further demonstrated.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the present application.
Claims (10)
1. The test tool for the battery management system is characterized in that the test tool is connected with test equipment of the battery management system; wherein, test fixture includes:
a target circuit board;
the parameter simulation units are arranged on the target circuit board; the parameter simulation unit is used for simulating the operation parameters of the battery management system; the operating parameters include voltage, temperature, and current;
and one end of the communication simulation unit is connected with each parameter simulation unit, and the other end of the communication simulation unit is connected with the test equipment.
2. The test tool according to claim 1, wherein the parameter simulation unit comprises a cell voltage simulation unit; the single voltage simulation unit is provided with a plurality of resistors which are connected in series, the resistors which are connected in series are connected with a first output voltage of a power output unit of the test tool, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the voltage of each battery string in the battery management system.
3. The test tool according to claim 1, wherein the parameter simulation unit comprises a temperature simulation unit, the temperature simulation unit is provided with a temperature sensor, and an output end of the temperature sensor is connected with the test equipment.
4. The test tool according to claim 1, wherein the parameter simulation unit comprises a current simulation unit, the current simulation unit is provided with a plurality of resistors connected in series, the resistors connected in series are connected with a second output voltage of a power output unit of the test tool, and two ends of each resistor are connected to the test equipment; and the voltage at two ends of the resistor is used for simulating the total current of each battery string in the battery management system.
5. The test tool according to claim 1, wherein the parameter simulation unit comprises a high voltage acquisition simulation unit, and the high voltage acquisition simulation unit is connected with a power output unit of the test tool to simulate a high voltage acquisition voltage of the battery management system.
6. The test tool according to claim 1, wherein the parameter simulation unit comprises an insulation resistance acquisition simulation unit, and the insulation resistance acquisition simulation unit is provided with a test resistor and used for simulating the insulation resistance of the battery management system.
7. The test tool according to claim 1, wherein the parameter simulation unit comprises an IO driving simulation unit, and the IO driving simulation unit is provided with a power resistor and used for simulating a load of the battery management system.
8. The test tool according to claim 1, wherein the parameter simulation unit comprises an IO detection simulation unit, and the IO detection simulation unit is connected to a preset voltage or grounded and used for simulating high and low level tests.
9. The test tool according to any one of claims 1 to 8, wherein the communication simulation unit is further connected with an upper computer and used for simulating a communication test.
10. The test tool according to claim 9, wherein the communication simulation unit comprises a plurality of interface channels, and the interface channels are connected with each other to simulate mutual testing of the interface channels.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922118308.7U CN211293113U (en) | 2019-11-29 | 2019-11-29 | Test tool of battery management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922118308.7U CN211293113U (en) | 2019-11-29 | 2019-11-29 | Test tool of battery management system |
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| CN211293113U true CN211293113U (en) | 2020-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110742A (en) * | 2023-08-22 | 2023-11-24 | 南通国轩新能源科技有限公司 | Quality detection method and system for battery management unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110742A (en) * | 2023-08-22 | 2023-11-24 | 南通国轩新能源科技有限公司 | Quality detection method and system for battery management unit |
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Address after: 215129 West of Building 28, No. 2, Mount Taishan Road, Suzhou High tech Zone, Suzhou, Jiangsu Province Patentee after: Suzhou Jingkong Energy Technology Co.,Ltd. Address before: 215129 West, building 28, Hefeng Industrial Park, No.2, Taishan Road, high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU JK ENERGY Ltd. |