Collecting wire harness connecting terminal, battery module and power utilization device

Abstract

The utility model relates to the technical field of power batteries, and discloses an acquisition wire harness connecting terminal, a battery module and an electric device. Wherein the collection wire harness connecting terminal has conductivity and comprises a middle connecting part, a wire harness connecting part and a busbar connecting part, the middle connecting part is fixedly connected with the wire harness connecting part and the busbar connecting part, the wire harness connecting part and a collection wire harness are fixed in a compression joint mode, and the busbar connecting part can be connected with a preset containing part on a busbar in a clamped mode. According to the utility model, the accommodating part is preset on the busbar, and the busbar connecting part is clamped in the accommodating part, so that the busbar connecting part is fixedly connected with the busbar, and compared with the prior art, the connection between the acquisition wire harness connecting terminal and the busbar is more stable; the connection terminal of the collection wire harness is not easy to loosen in the vibration process of the electric device such as a new energy automobile, so that the probability of abnormal collection problems such as collection failure can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a collection harness connection terminal, a battery module comprising the collection harness connection terminal, and an electric device comprising the battery module. Background Art

[0002] In new energy vehicles, the power supply requires data acquisition terminals to collect cell voltage and temperature, monitoring cell information in real time. The accuracy of this data collection can impact the vehicle's safe operation. In the electric vehicle industry, data stability and production efficiency are key concerns for OEMs.

[0003] When collecting voltage from traditional automotive power batteries, flag-shaped connectors are usually used to connect the wiring harness and the bus. During vehicle vibration, the connectors can easily become loose, resulting in increased contact resistance and abnormal data collection, requiring unplugging and replugging. Excessive plugging and unplugging can easily cause the connectors to become loose, leading to collection failure and other collection anomalies. Utility Model Content

[0004] The purpose of the embodiments of the present utility model is to provide a collection harness connection terminal, a battery module and an electrical device, wherein the connection between the collection harness connection terminal and the bus is more stable, the collection harness connection terminal is not easy to loosen during the vibration of the electrical device, and the probability of collection abnormalities such as collection failure can be effectively reduced.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a collection harness connection terminal is provided, which is conductive and includes an intermediate connection portion, a harness connection portion and a bus connection portion. The intermediate connection portion is fixedly connected to the harness connection portion and the bus connection portion respectively. The harness connection portion is crimped and fixed to the collection harness. The bus connection portion can be snapped into a preset accommodating portion on the bus.

[0007] As a further solution of the collection harness connection terminal, the busbar connection portion is clamped to the accommodating portion and fixed by welding; or, the busbar connection portion is clamped to the accommodating portion and fixed by conductive glue.

[0008] As a further solution for the collection harness connection terminal, the accommodating portion has at least one set of two opposite cavity walls, and the busbar connecting portion has at least one set of two opposite outer side walls. When the busbar connecting portion is clamped with the accommodating portion, at least one set of two opposite outer side walls respectively abut against the two opposite cavity walls of the accommodating portion.

[0009] As a further solution for the collection harness connection terminal, the busbar connection portion includes two abutment plates and an intermediate connecting plate, the two abutment plates are arranged at intervals and parallel to each other, the two abutment plates are respectively vertically connected to the intermediate connecting plates, one of the abutment plates is connected to the intermediate connecting portion, and the outer side walls of the abutment plate facing away from the other abutment plate are respectively abutted against the two opposite cavity walls of the accommodating portion.

[0010] As a further solution for the collection harness connection terminal, the busbar connection part also includes a tightening part, at least one of the abutment plates has a window passing through it along its thickness direction, the tightening part is protruding on the side of the abutment plate away from the other abutment plate, the tightening part is connected to the window edge of the window, and when the busbar connection part is inserted into the accommodating part, a cavity wall of the accommodating part is pressed against the tightening part and the tightening part is partially located in the window, and the size of the window is not smaller than the size of the tightening part.

[0011] As a further solution for the collection harness connection terminal, the busbar connection portion is a U-shaped structure, and the busbar connection portion is located on the side of the intermediate connection portion facing the busbar. Along the Z direction, one end of the abutment portion adjacent to the intermediate connecting plate is connected to the window edge of the window adjacent to the intermediate connecting plate, and the other end of the abutment portion is inclined toward a direction away from the intermediate connecting plate.

[0012] As a further solution of the collection harness connection terminal, the collection harness connection terminal is formed by integrally punching and bending a nickel sheet.

[0013] On the other hand, a battery module is provided, comprising a plurality of square battery cells and a plurality of busbars, wherein the busbars are connected to the poles of the square battery cells. The module is characterized in that the module further comprises a plurality of the collection harness connection terminals, wherein the busbars are provided with an accommodating portion, and the busbar connecting portion of the collection harness connection terminal is snap-fitted into the accommodating portion.

[0014] As a further solution of the battery module, the busbar connecting portion of the collection harness connecting terminal is clamped and welded to the accommodating portion; or, the busbar connecting portion is clamped and fixed to the accommodating portion by conductive glue.

[0015] As a further solution of the battery module, the accommodating portion is a through hole that penetrates the busbar along the thickness direction.

[0016] As a further solution of the battery module, a guiding slope is provided at an edge of the through hole facing the busbar connecting portion.

[0017] On the other hand, an electrical device is provided, comprising a mounting base and the battery module, wherein the battery module is mounted on the mounting base.

[0018] Beneficial effects:

[0019] The utility model pre-sets an accommodating portion on the bus, and the bus connecting portion is clamped into the accommodating portion to connect the bus connecting portion to the bus. Compared with the existing technology, the connection between the collection harness connecting terminal and the bus is more stable, and the collection harness connecting terminal is not easy to loosen during the vibration of the electrical device such as new energy vehicles, which can effectively reduce the probability of collection abnormalities such as collection failure.

[0020] The busbar connecting portion of the utility model is clamped in the accommodating portion and then fixedly connected to the busbar by welding, thereby further improving the connection stability between the busbar connecting portion and the busbar.

[0021] The collection harness connection terminal of the utility model has a simple structure, reliable connection and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the assembly structure of the collection harness connection terminal, the collection harness and the busbar according to an embodiment of the present utility model.

[0024] Figure 2 This is an exploded schematic diagram of the collection harness connection terminal, collection harness and bus bar according to an embodiment of the present invention.

[0025] Figure 3 This is a structural diagram of the acquisition harness connection terminal described in an embodiment of the present utility model.

[0026] Figure 4 The collection harness connection terminal of the utility model embodiment is along Figure 3 Schematic diagram of the side view from the middle P direction.

[0027] Figure 5 for Figure 3 A partial enlarged schematic diagram of part A.

[0028] Figure 6 This is a partial schematic diagram of the battery module described in an embodiment of the present utility model.

[0029] Figure 7 This is a partial exploded schematic diagram of the battery module described in an embodiment of the present utility model.

[0030] Figure 8 for Figure 7 A partial enlarged schematic diagram of part B.

[0031] In the picture:

[0032] 100, collection harness connection terminal; 110, intermediate connection portion; 120, harness connection portion; 130, busbar connection portion; 131, abutment plate; 1311, window; 132, intermediate connection plate; 133, abutment portion;

[0033] 200, collection harness;

[0034] 300, busbar; 310, accommodating portion; 320, guide slope;

[0035] 400, square battery cell; 410, pole. DETAILED DESCRIPTION

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0037] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and the like are used solely for descriptive purposes and do not have any special meaning.

[0040] like Figures 1 to 5 As shown, the collection harness connection terminal 100 of this embodiment is conductive and includes an intermediate connection portion 110, a harness connection portion 120 and a bus connection portion 130. The intermediate connection portion 110 is fixedly connected to the harness connection portion 120 and the bus connection portion 130 respectively. The harness connection portion 120 is crimped and fixed to the collection harness 200. The bus connection portion 130 can be snapped into a preset accommodating portion 310 on the bus 300.

[0041] In this embodiment, a receiving portion 310 is preset on the bus 300, and the bus connecting portion 130 is snapped into the receiving portion 310 to achieve a fixed connection. Compared with the prior art, the connection between the collection harness connecting terminal 100 and the bus 300 is stable, and the collection harness connecting terminal 100 is not easy to loosen during vibration of the electrical device such as a new energy vehicle, which can effectively reduce the probability of collection abnormalities such as the risk of collection failure.

[0042] Furthermore, the busbar connecting portion 130 and the accommodating portion 310 are clamped and fixed by welding, which can further improve the connection stability between the collection harness connection terminal 100 and the busbar 300. In other embodiments, the busbar connecting portion 130 and the accommodating portion 310 can be fixed by conductive adhesive after being clamped together. That is, after the busbar connecting portion 130 and the accommodating portion 310 are clamped together, the accommodating portion 310 is filled with conductive adhesive to further improve the connection stability between the collection harness connection terminal 100 and the busbar 300.

[0043] Optionally, the accommodating portion 310 has a set of two opposing cavity walls, and the busbar connecting portion 130 has a set of two opposing outer side walls. When the busbar connecting portion 130 is engaged with the accommodating portion 310, the two opposing outer side walls respectively abut against the two opposing cavity walls of the accommodating portion 310. This structural design allows the busbar connecting portion 130 to be engaged within the accommodating portion 310. Once the engagement is stable, welding can be performed. The combination of engagement and welding can effectively improve the connection stability between the collection harness connector 100 and the busbar 300.

[0044] In other embodiments, the cross-section of the accommodating portion 310 is a rectangular structure, and the accommodating portion 310 has two sets of opposing cavity walls. Correspondingly, the busbar connecting portion 130 has two sets of opposing outer side walls. When the busbar connecting portion 130 is engaged with the accommodating portion 310, the two sets of opposing outer side walls respectively abut against the two sets of opposing cavity walls of the accommodating portion 310. Of course, the cross-section of the accommodating portion 310 is not limited to a rectangular structure, and can also have other polygonal structures, such as a diamond structure, a hexagonal structure, etc., and the details will not be repeated here.

[0045] For example, the busbar connecting portion 130 includes two abutment plates 131 and an intermediate connecting plate 132. The two abutment plates 131 are arranged at intervals and parallel to each other. The two abutment plates 131 are respectively vertically connected to the intermediate connecting plates 132. One of the abutment plates 131 is connected to the intermediate connecting portion 110, and the outer side walls of the abutment plate 131 facing away from the other abutment plate 131 abut against the two opposite cavity walls of the accommodating portion 310 respectively.

[0046] The two abutment plates 131 are parallel to each other and connected by an intermediate connecting plate 132. The outer side walls of the two abutment plates 131 abut against two opposite cavity walls of the accommodating portion 310, respectively. The cavity walls squeeze the two abutment plates 131 to a certain extent, so that the two abutment plates 131 always maintain a tight force against the cavity walls to achieve a snap connection.

[0047] Furthermore, the bus connection portion 130 also includes a tightening portion 133, and at least one abutting plate 131 is penetrated by a window 1311 along its thickness direction. The tightening portion 133 is protruded on the side of the abutting plate 131 away from the other abutting plate 131, and the tightening portion 133 is connected to the window edge of the window 1311. When the bus connection portion 130 is inserted into the accommodating portion 310, a cavity wall of the accommodating portion 310 is pressed against the tightening portion 133 and the tightening portion 133 is partially located in the window 1311, and the size of the window 1311 is not smaller than the size of the tightening portion 133.

[0048] In this embodiment, a window 1311 is formed on the abutment plate 131, and a pressing portion 133 is connected to the edge of the window 1311. When the busbar connector 130 is inserted into the accommodating portion 310 and engaged with the cavity wall of the accommodating portion 310, the pressing portion 133 is squeezed by the cavity wall and rotates about the straight line where the pressing portion 133 is connected to the edge of the window 1311. As the rotation angle increases, the pressing force of the pressing portion 133 on the cavity wall gradually increases, further improving the connection stability between the busbar connector 130 and the accommodating portion 310. The size of the window 1311 is not smaller than that of the pressing portion 133, so that when the pressing portion 133 is squeezed by the cavity wall, it moves until part of the pressing portion 133 is located within the window 1311. The arrangement of the window 1311 reserves space for the movement of the pressing portion 133.

[0049] For example, one of the two abutting plates 131 is connected to the intermediate connecting portion 110, and the other abutting plate 131 is provided with a window 1311 of the above embodiment for connecting to the abutting portion 133. Of course, in other embodiments, the window 1311 can also be provided on the abutting plate 131 directly connected to the intermediate connecting portion 110 and connected to the abutting portion 133; or Figure 3 As shown, windows 1311 are formed on both abutting plates 131 and are connected to abutting portions 133 respectively.

[0050] Furthermore, the bus connection portion 130 is a U-shaped structure, and the bus connection portion 130 is located on the side of the intermediate connection portion 110 facing the bus 300. Along the Z direction, one end of the pressing portion 133 adjacent to the intermediate connecting plate 132 is connected to the window edge of the window 1311 adjacent to the intermediate connecting plate 132, and the other end of the pressing portion 133 is inclined toward a direction away from the intermediate connecting plate 132.

[0051] like Figure 3 As shown, along the Z direction, the end of the pressing portion 133 adjacent to the middle connecting plate 132 is the end of the pressing portion 133 at Figure 3 The lower end of the window 1311 is adjacent to the window edge of the middle connecting plate 132. Figure 3 The lower edge of the middle window 1311, the lower end of the pressing portion 133 is connected to the lower edge of the window 1311, and the other end of the pressing portion 133 is inclined in a direction away from the middle connecting plate 132, so that the busbar connecting portion 130 can be Figure 2 The upper portion of the middle busbar 300 is inserted into the receiving portion 310 and engaged with the receiving portion 310 .

[0052] In this embodiment, the collection harness connection terminal 100 is a nickel collection harness connection terminal. The collection harness connection terminal 100 is formed by integrally stamping and bending a nickel sheet, which can improve the stability of the collection harness connection terminal 100. The cost of nickel is low. Compared with the traditional use of flag-type connectors to connect the bus 300 and the collection harness 200, the cost of the collection harness connection terminal 100 is effectively reduced.

[0053] In this embodiment, the tensile force value after the wire harness connection portion 120 of the collection wire harness connection terminal 100 and the collection wire harness 200 are crimped is not less than 50N, which can ensure the reliability of the connection between the collection wire harness connection terminal 100 and the collection wire harness 200; the bus connection portion 130 and the accommodating portion 310 of the bus 300 are clamped and welded, which can improve the welding accuracy and reliability. The shear force after welding is greater than 200N and the peeling force is greater than 40N.

[0054] like Figure 6 and Figure 7As shown, this embodiment further provides a battery module, including a plurality of square battery cells 400, a plurality of busbars 300 and a plurality of collection harness connection terminals 100 as described in the above embodiment, wherein the busbars 300 are connected to the poles 410 of the square battery cells 400, and the busbars 300 are provided with a receiving portion 310, and the busbar connecting portion 130 of the collection harness connection terminal 100 is snap-fitted with the receiving portion 310.

[0055] For example, multiple square battery cells 400 are arranged in an array. Among two adjacent square battery cells 400, the positive pole of one square battery cell 400 and the negative pole of the other square battery cell 400 are welded to a busbar 300 at the same time. Two accommodating portions 310 corresponding to the two square battery cells 400 are provided on the busbar 300. The two collection harness connection terminals 100 are respectively connected to one of the accommodating portions 310. After the connection is completed, they are further fixed by welding.

[0056] like Figure 8 As shown, the accommodation portion 310 is a through hole that penetrates the busbar 300 along the thickness direction. The nickel sheet is relatively thin, and compared with slotting, opening a through hole is more convenient and quicker.

[0057] In order to smoothly insert the busbar connection portion 130 of the collection harness connection terminal 100 into the through hole, in this embodiment, a guide slope 320 is designed at the edge of the through hole facing the busbar connection portion 130. The busbar connection portion 130 can be quickly inserted into the through hole along the guide slope 320 to complete the snap connection.

[0058] This embodiment also provides an electrical device comprising a mounting base and the battery module of the above embodiment, wherein the battery module is mounted on the mounting base. The electrical device, for example, is a new energy vehicle, and the battery module is mounted on the chassis (i.e., the mounting base) of the new energy vehicle. Vibration generated during driving of the new energy vehicle does not affect the connection stability between the collection harness connection terminal 100 and the busbar 300 in the battery module.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A collection harness connection terminal, having conductivity, characterized in that: The collection harness connection terminal includes an intermediate connection part, a harness connection part and a bus connection part. The intermediate connection part is connected to the harness connection part and the bus connection part respectively. The harness connection part is fixed to the collection harness. The bus connection part can be snapped into a preset accommodating part on the bus.

2. The collection harness connection terminal according to claim 1, characterized in that: The busbar connecting portion is clamped to the accommodating portion and fixed by welding; or, the busbar connecting portion is clamped to the accommodating portion and fixed by conductive glue.

3. The collection harness connection terminal according to claim 1, characterized in that: The accommodating portion has at least one set of two opposite cavity walls, and the busbar connecting portion has at least one set of two opposite outer side walls. When the busbar connecting portion is engaged with the accommodating portion, at least one set of two opposite outer side walls respectively abuts against the two opposite cavity walls of the accommodating portion.

4. The collection harness connection terminal according to claim 1, characterized in that: The busbar connecting portion includes two abutment plates and an intermediate connecting plate. The two abutment plates are arranged at intervals and parallel to each other. The two abutment plates are respectively vertically connected to the intermediate connecting plates. One of the abutment plates is connected to the intermediate connecting portion, and the outer side walls of the abutment plate facing away from the other abutment plate are respectively abutted against the two opposite cavity walls of the accommodating portion.

5. The collection harness connection terminal according to claim 4, characterized in that: The busbar connecting portion also includes a tightening portion, at least one of the abutting plates has a window passing through it along its thickness direction, the tightening portion is protruding on the side of the abutting plate away from the other abutting plate, the tightening portion is connected to the window edge of the window, and when the busbar connecting portion is inserted into the accommodating portion, a cavity wall of the accommodating portion presses against the tightening portion and makes the tightening portion partially located in the window, and the size of the window is not smaller than the size of the tightening portion.

6. The collection harness connection terminal according to claim 5, characterized in that: The busbar connecting portion is a U-shaped structure, and the busbar connecting portion is located on the side of the intermediate connecting portion facing the busbar. Along the Z direction, one end of the abutting portion adjacent to the intermediate connecting plate is connected to the window edge of the window adjacent to the intermediate connecting plate, and the other end of the abutting portion is inclined toward a direction away from the intermediate connecting plate.

7. The collection harness connection terminal according to any one of claims 1 to 6, characterized in that: The collection harness connection terminal is formed by integrally punching and bending a nickel sheet.

8. A battery module comprising a plurality of square battery cells and a plurality of busbars, wherein the busbars are connected to the poles of the square battery cells, characterized in that: It also includes a plurality of collection harness connection terminals according to any one of claims 1 to 7, wherein the busbar is provided with an accommodating portion, and the busbar connection portion of the collection harness connection terminal is snap-fitted with the accommodating portion.

9. The battery module according to claim 8, characterized in that: The accommodation portion is a through hole that penetrates the busbar along a thickness direction.

10. An electrical device, comprising a mounting base, characterized in that: It also includes the battery module according to any one of claims 7 to 9, wherein the battery module is installed on the mounting base.

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