Battery terminal structure

Abstract

The battery terminal structure comprises a terminal body and a terminal copper bar, the terminal body is located on a battery pack box body, one end of the terminal body is located in the battery pack box body, and the other end of the terminal body is located outside the battery pack box body; one end of the terminal copper bar is inserted into one end of the terminal body, the other end of the terminal copper bar penetrates through the terminal body and is in lap joint with a copper bar in a battery box body, a temperature sampling point is arranged in one end, located in the battery box body, of the terminal body, and a shell is arranged on the outer side; a temperature sampler is arranged on the temperature sampling point; the temperature sampler is connected with the temperature sampling device; the shell seals the temperature sampler in the terminal body. According to the battery terminal, the temperature sampling points are arranged on the terminal copper bar in the battery terminal body, and the temperature of the terminal body is directly measured, so that the problem that the collected temperature is not the real temperature of the battery terminal due to the fact that the module transmission copper bar in lap joint with the terminal needs to be perforated for sampling when the temperature of the terminal body is collected in the prior art is solved.

Description

Technical Field

[0001] The present application relates to a battery terminal structure, belonging to the field of electronics. Background Art

[0002] In the energy storage system, the current method of sampling the temperature of the battery pack output terminal is to add temperature sampling points by opening holes on the module output copper bar in the battery pack that overlaps the battery terminal to collect the temperature of the battery pack output terminal. The disadvantage of this method is that it results in an additional process in the processing of the module output copper bar in the battery pack, and the actual temperature collected is the temperature of the module output copper bar. There will be a temperature difference caused by heat transfer between the temperature of the module output copper bar and the actual temperature of the terminal. As a result, the detected temperature is not the actual battery output terminal temperature. Utility Model Content

[0003] According to one aspect of the present application, a battery terminal structure is provided to achieve real temperature detection of the battery output terminal. The specific scheme is:

[0004] A battery terminal structure, comprising: a terminal body and a terminal copper bar, wherein the terminal body is located on a battery pack case, one end of the terminal body is located inside the battery pack case, and the other end of the terminal body passes through the battery pack case and is located outside the battery pack case; one end of the terminal copper bar is inserted into an end of the terminal body outside the battery pack case, and the other end of the terminal copper bar passes through the terminal body and is inserted into an end of the case to overlap the copper bar in the battery case, a temperature sampling point is arranged inside the end of the terminal body located inside the battery pack case, and a shell is arranged outside the terminal body;

[0005] The temperature sampling point is arranged at the terminal copper bar close to the inner wall of the battery pack box, and a temperature sampler is arranged at the temperature sampling point;

[0006] The temperature sampler is installed on the terminal copper bar, and the temperature sampler is communicatively connected with the temperature sampling device;

[0007] The shell is arranged along the peripheral side of the terminal body, and the shell seals the temperature sampler inside the terminal body.

[0008] Preferably, the temperature sampler is NTC.

[0009] Preferably, the temperature sampler is integrated at the temperature sampling point.

[0010] Preferably, the temperature sampler is integrally formed with the housing.

[0011] Preferably, the shell is an insulating shell.

[0012] Preferably, an output circuit is provided between the temperature sampler and the temperature sampling device;

[0013] One end of the output line is connected to the temperature sampler, and the other end of the output line passes through the shell and is connected to the temperature sampling device.

[0014] Preferably, the connection between the output line and the temperature sampler is any one of a wiring harness, a quick plug, a patch, and a riveted connection.

[0015] Preferably, the housing is provided with an installation opening for the output line;

[0016] The size of the installation opening matches the cross-sectional size of the output line.

[0017] Preferably, the thickness of the shell is 2 to 3 mm.

[0018] The beneficial effects of this application include:

[0019] The present application sets a temperature sampling point on the terminal copper busbar inside the original battery terminal body, and sets an NTC at the temperature sampling point to directly measure the temperature of the terminal body, thereby avoiding the problem in the prior art that the temperature collection of the terminal body requires opening a hole for sampling at the module transmission copper busbar overlapped with the terminal, resulting in inaccurate position of the temperature sampling point and the collected temperature is not the actual temperature of the battery terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a battery terminal structure in an embodiment of the present application;

[0021] Figure 2 A side view of a battery terminal structure in an embodiment of the present application;

[0022] Figure 3 It is a three-dimensional schematic diagram of the end surface of a battery terminal structure in an embodiment of the present application.

[0023] List of parts and reference numerals:

[0024] 1. Terminal copper bar; 2. Output line; 3. Fixing plate; 4. Shell; 5. NTC; 6. Terminal body. DETAILED DESCRIPTION

[0025] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0026] A battery terminal structure, comprising: a terminal body and a terminal copper bar, wherein the terminal body is located on a battery pack case, one end of the terminal body is located inside the battery pack case, the other end of the terminal body passes through the battery pack case and is located outside the battery pack case, one end of the terminal copper bar is inserted into the terminal body outside the battery case, the other end of the terminal copper bar passes through the terminal body inside the battery case and overlaps with the copper bar for module output inside the battery case, a temperature sampling point is arranged inside one end of the terminal body located inside the battery pack case, and a shell is arranged outside the terminal body;

[0027] The temperature sampling point is arranged on the terminal copper bar, the temperature sampling point is arranged close to the inner wall of the battery pack box, and a temperature sampler is arranged on the temperature sampling point;

[0028] The temperature sampler is installed on the terminal copper bar, and the temperature sampler is communicatively connected with the temperature sampling device;

[0029] The shell is arranged along the peripheral side of the terminal body, and the shell seals the temperature sampler inside the terminal body.

[0030] Furthermore, the temperature sampler is NTC, and its specification or model is MF52B;

[0031] Furthermore, the temperature sampler is integrated at the temperature sampling point.

[0032] Furthermore, the temperature sampler is integrally formed with the shell.

[0033] Furthermore, the housing is an insulating housing. In one embodiment of the present application, the housing is a plastic housing.

[0034] Furthermore, an output circuit is provided between the temperature sampler and the temperature sampling device;

[0035] One end of the output line is connected to the temperature sampler, and the other end of the output line passes through the shell and is connected to the temperature sampling device.

[0036] In the present application, the temperature sampling device is specifically a temperature acquisition unit BMU board.

[0037] Furthermore, the connection between the output circuit and the temperature sampler is any one of line connection (wiring harness), plug-in (quick plug), patch, and riveting.

[0038] The specific connection process is that after the temperature sampler NTC and the output line are welded, UV glue is coated on the temperature sampler NTC to completely cover the temperature sampler NTC.

[0039] Furthermore, the housing is provided with an installation opening for the output circuit;

[0040] The size of the installation opening matches the cross-sectional size of the output line.

[0041] In one embodiment of the present application, the diameter of the installation opening is greater than 20 mm. 2 .

[0042] Furthermore, the thickness of the shell is 2 to 3 mm.

[0043] It should be noted that, in the present application, the terminal body is used to output the current of the battery.

[0044] In the present application, the terminal body is the battery terminal, and the terminal body is installed on the battery pack box through a fixing plate; that is, the fixing plate is fixed on the battery box, the terminal body vertically passes through the fixing plate, and is fixed on the fixing plate, and the sampling point is set on the side of the fixing plate facing the battery box.

[0045] In the present application, the NTC is fixed on the terminal copper busbar by welding, and the NTC is sealed inside the terminal body by a shell, wherein the NTC and the shell are integrally formed for directly sampling the temperature of the battery terminal body. The NTC transmits the collected temperature of the terminal body to the temperature sampling device through a transmission line to obtain the actual temperature of the battery terminal body.

[0046] In the present application, the thickness of the shell is set to 2-3 mm so that the overall size of the terminal body meets the design requirements.

[0047] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A battery terminal structure, comprising: A terminal body and a terminal copper bar, wherein the terminal body is located on a battery pack case, one end of the terminal body is located inside the battery pack case, and the other end of the terminal body passes through the battery pack case and is located outside the battery pack case; one end of the terminal copper bar is inserted into an end of the terminal body outside the battery pack case, and the other end of the terminal copper bar passes through the terminal body and is inserted into an end in the case to overlap the copper bar in the battery case, characterized in that a temperature sampling point is arranged inside the end of the terminal body located in the battery pack case, and a shell is arranged outside the terminal body; The temperature sampling point is arranged at the terminal copper bar close to the inner wall of the battery pack box, and a temperature sampler is arranged at the temperature sampling point; The temperature sampler is installed on the terminal copper bar, and the temperature sampler is communicatively connected with the temperature sampling device; The shell is arranged along the peripheral side of the terminal body, and the shell seals the temperature sampler inside the terminal body.

2. A battery terminal structure according to claim 1, characterized in that: The temperature sampler is NTC.

3. A battery terminal structure according to claim 1, characterized in that: The temperature sampler is integrated at the temperature sampling point.

4. A battery terminal structure according to claim 1, characterized in that: The temperature sampler is integrally formed with the housing.

5. A battery terminal structure according to claim 1, characterized in that: The shell is an insulating shell.

6. A battery terminal structure according to claim 1, characterized in that: An output circuit is provided between the temperature sampler and the temperature sampling device; One end of the output line is connected to the temperature sampler, and the other end of the output line passes through the shell and is connected to the temperature sampling device.

7. A battery terminal structure according to claim 6, characterized in that: The connection between the output line and the temperature sampler is any one of a wiring harness, a quick plug, a patch, and a riveted connection.

8. A battery terminal structure according to claim 6, characterized in that: The housing is provided with an installation opening for the output circuit; The size of the installation opening matches the cross-sectional size of the output line.

9. A battery terminal structure according to claim 1, characterized in that: The thickness of the shell is 2-3 mm.

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