High-side output test tool for battery management system

Abstract

The utility model belongs to the technical field of new energy automobile batteries, and relates to a battery management system high-side output test tool, which comprises a relay module, a data collector module I, a data collector module II and an auxiliary power supply module, and is characterized in that the auxiliary power supply module is used for supplying power to the test tool; the first data collector module and the second data collector module are connected in parallel between the high-voltage output positive and negative of the BMS, and the relay module is arranged on a branch of the high-voltage output positive of the BMS and the first data collector module; the first data collector module is used for collecting loop current of the relay module, and the second data collector module is used for collecting high-side output voltage of the BMS; a relay module is used as an output load, a current detection function is added to a first data collector module arranged on a branch on the same side, the purpose of detecting BMS output voltage and current at the same time is achieved, in addition, the relay module is used as the output load, a BMS real use scene can be better simulated, a system-level function test of a BMS high-side output function is achieved, and the system-level function test efficiency is improved. The integration degree is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle batteries, and in particular relates to a high-side output test tool for a battery management system. Background Art

[0002] The battery management system (BMS) of electric vehicles is a key part of the battery system in the three-electric system of electric vehicles. It is a key core component for monitoring the operation of the battery system and protecting the battery system. In order to improve the product performance and quality of BMS, it is very critical and necessary to conduct a series of tests on BMS.

[0003] The current BMS test tooling generally uses a resistor as the output load for the detection of the high-side output, which can only meet the detection of the output voltage. This makes the test function of the BMS test system simple and cannot cover all functional tests of the BMS high-side output. Utility Model Content

[0004] The purpose of the utility model is to provide a high-side output test tool for a battery management system to solve the problems raised in the background technology.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] The utility model proposes a battery management system high-side output test tool, which at least includes a relay module, a data collector module 1, a data collector module 2 and an auxiliary power supply module, wherein:

[0007] The auxiliary power supply module is connected to the data acquisition module 1 and the data acquisition module 2, and is used to supply power to the test fixture;

[0008] Data collector module 1 and data collector module 2 are connected in parallel between the positive and negative high-voltage outputs of the BMS, and the relay module is located between the positive high-voltage output of the BMS and a branch of the data collector module; data collector module 1 is used to collect the loop current of the relay module, and data collector module 2 is used to collect the high-side output voltage of the BMS.

[0009] As a further optimization solution of the present invention, the supply voltage of the auxiliary power module is 9V-18V.

[0010] As a further optimization solution of the present invention, the relay module is a mechanical relay.

[0011] As a further optimization solution of the present utility model, the data collector module 1 is a data collector current detection channel.

[0012] As a further optimization solution of the present utility model, the data collector module 2 is a data collector voltage detection channel.

[0013] As a further optimization scheme of the utility model, the test tool also includes a control chip MCU, and the control chip MCU is signal-connected to the data acquisition module 1 and the data acquisition module 2, and is used to determine whether the loop current of the detection relay module and the BMS high-side output voltage are within a set threshold range.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model uses a relay module as an output load, adds a current detection function through a data acquisition module set in the same-side branch, and integrates it into the test fixture, thereby achieving the goal of simultaneously detecting the BMS output voltage and current. In addition, setting the relay module as the output load can better simulate the actual use scenario of the BMS, and realize the system-level functional test of the BMS high-side output function, with high integration.

[0016] (2) The utility model collects voltage through the voltage collection channel of the data collector; detects the current passing through the relay circuit through the current detection channel of the data collector, determines whether the detected voltage and current are within the correct threshold range, and thereby determines whether the high-side output function of the BMS is normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the test tooling in the embodiment of the utility model.

[0018] In the figure: 1. BMS; 2. Relay module; 3. Data collector module 1; 4. Data collector module 2; 5. Auxiliary power supply module. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1 As shown, this embodiment proposes a battery management system high-side output test tool, which at least includes a relay module 2, a data collector module 1 3, a data collector module 2 4 and an auxiliary power module 5, wherein the auxiliary power module 5 is connected to the data collector module 1 3 and the data collector module 2 4 to supply power to the test tool;

[0022] The data acquisition module 1 3 and the data acquisition module 2 4 are connected in parallel between the positive and negative high-voltage outputs of the BMS, and the relay module 2 is arranged between the positive high-voltage output of the BMS and the branch of the data acquisition module 1 3; the data acquisition module 1 3 is used to collect the loop current of the relay module 2, and the data acquisition module 2 4 is used to collect the high-side output voltage of the BMS.

[0023] Compared with the prior art that uses a resistor as the output load of the BMS test tooling, the present application uses a relay module 2 as the output load, adds a current detection function through a data acquisition module 3 set in the same side branch, and integrates it into the test tooling to achieve simultaneous voltage and current detection testing. In addition, setting the relay module 2 as the output load can better simulate the actual usage scenario of the BMS, and achieve system-level functional testing of the BMS high-side output function, with high integration.

[0024] Preferably, the supply voltage of the auxiliary power module 5 is 9V-18V.

[0025] Preferably, the relay module 2 is a mechanical relay.

[0026] Preferably, the data collector module 1 3 is a current detection channel of the data collector.

[0027] Preferably, the data collector module 2 4 is a data collector voltage detection channel.

[0028] Preferably, the test tool also includes a control chip MCU, which is signal-connected to the data acquisition module 1 3 and the data acquisition module 2 4, and is used to determine whether the loop current of the detection relay module 2 and the high-side output voltage of BMS1 are within a set threshold range.

[0029] According to the embodiments of the present application, after the BMS high-side output stabilizes the voltage, the voltage is collected through the voltage collection channel of the data collector; the current passing through the relay circuit is detected through the current detection channel of the data collector to determine whether the detected voltage and current are within the correct threshold range, thereby determining whether the high-side output function of the BMS is normal.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery management system high-side output test tool, characterized in that: It at least comprises a relay module (2), a data acquisition module 1 (3), a data acquisition module 2 (4) and an auxiliary power supply module (5), wherein: The auxiliary power supply module (5) is connected to the data acquisition module 1 (3) and the data acquisition module 2 (4) and is used to supply power to the test tooling; The data acquisition module 1 (3) and the data acquisition module 2 (4) are connected in parallel between the positive and negative high-voltage outputs of the BMS (1), and the relay module (2) is arranged between the positive high-voltage output of the BMS (1) and the branch of the data acquisition module 1 (3); the data acquisition module 1 (3) is used to collect the loop current of the relay module (2), and the data acquisition module 2 (4) is used to collect the high-side output voltage of the BMS (1).

2. A battery management system high-side output test tool according to claim 1, characterized in that: The supply voltage of the auxiliary power module (5) is 9V-18V.

3. A battery management system high-side output test tool according to claim 1, characterized in that: The relay module (2) is a mechanical relay.

4. A battery management system high-side output test tool according to claim 1, characterized in that: The data collector module 1 (3) is a current detection channel of the data collector.

5. A battery management system high-side output test tool according to claim 1, characterized in that: The data collector module 2 (4) is a data collector voltage detection channel.

6. A battery management system high-side output test tool according to claim 1, characterized in that: The test fixture further comprises a control chip MCU, which is signal-connected to the data acquisition module 1 (3) and the data acquisition module 2 (4) and is used to determine whether the loop current of the detection relay module (2) and the high-side output voltage of the BMS (1) are within a set threshold range.

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