CN215526054U

CN215526054U - Sampling terminal and sampling wire harness structure

Info

Publication number: CN215526054U
Application number: CN202121335318.7U
Authority: CN
Inventors: 王吕滨
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-14
Anticipated expiration: 2031-06-16

Abstract

The utility model belongs to the technical field of batteries, and discloses a sampling terminal and a sampling wire harness structure, wherein the sampling terminal comprises a first connecting part and a second connecting part which are sequentially connected, one end of the first connecting part, which is far away from the second connecting part, is used for connecting a wire, the sampling terminal also comprises a third connecting part, a fusing part and a packaging structure, and the third connecting part can be connected with a lug of a battery core in a welding way; one end of the fusing part is connected with the second connecting part, the other end of the fusing part is connected with the third connecting part, and the fusing part is made of fusing materials; the packaging structure is coated on the fusing part so as to isolate the fusing part from the outside and ensure the structural strength of the sampling terminal; this sampling pencil structure has adopted the sampling terminal that has fusing part, not only can avoid electric core to take place the thermal runaway that the short circuit leads to because of the sampling pencil, and the volume of the sampling pencil that still greatly reduces, and the cost is lower.

Description

Sampling terminal and sampling wire harness structure

Technical Field

The utility model relates to the technical field of batteries, in particular to a sampling terminal and a sampling wire harness structure.

Background

With the development of new energy automobiles, the demand for power batteries is continuously increased, and meanwhile, the performance requirements for the power batteries are also continuously increased; in the using process of the power battery, a control system of the power battery usually needs to use a detection wire harness to detect the voltage of the battery cell in real time, and in order to prevent the detection wire harness from being ablated due to short circuit, a fuse is usually arranged in the detection wire harness to prevent the battery cell from generating thermal runaway; however, the arrangement of the fuse in the inspection harness results in an excessively large volume and high cost of the inspection harness.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sampling terminal and a sampling wire harness structure, so as to reduce the volume of the sampling wire harness and reduce the cost of the sampling wire harness.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a sampling terminal, which comprises a first connecting part and a second connecting part which are connected in sequence, wherein one end of the first connecting part, which is far away from the second connecting part, is used for connecting a lead, and the sampling terminal also comprises:

the third connecting part is arranged at an interval with one end of the second connecting part, which is far away from the first connecting part, and the third connecting part can be connected with a lug of the battery cell in a welding way;

one end of the fusing part is connected with the second connecting part, the other end of the fusing part is connected with the third connecting part, and the fusing part is made of fusing materials; and

and the packaging structure is wrapped on the fusing part.

Preferably, the fusing part is welded to the second connection part and the third connection part.

Preferably, the fusing part is connected to the second connecting part and the third connecting part by pressure welding.

Preferably, one end of the first connecting portion, which is far away from the second connecting portion, is provided with a connecting hole, the wire can be inserted into the connecting hole, and the first connecting portion can be crimped to the wire.

Preferably, an opening is formed in a side wall of the first connecting portion, the opening is communicated with the connecting hole, and an end of the wire can pass through the opening.

Preferably, the second connecting portion is provided with a buffer member capable of coming into contact with an end plate of the battery module.

Preferably, the buffer member is made of a rubber material.

Preferably, the fusing part is a fuse wire.

Preferably, the packaging structure is made of an insulating material.

The utility model also provides a sampling wire harness structure which comprises a PCBA board, a lead, a temperature sensor and a plurality of sampling terminals, wherein the temperature sensor and the plurality of sampling terminals are electrically connected with the PCBA board through the lead.

The utility model has the beneficial effects that:

the sampling terminal provided by the utility model comprises a first connecting part and a second connecting part which are sequentially connected, wherein one end of the first connecting part, which is far away from the second connecting part, is used for connecting a wire; one end of the fusing part is connected with the second connecting part, the other end of the fusing part is connected with the third connecting part, and the fusing part is made of fusing materials; the packaging structure is coated on the fusing part to isolate the fusing part from the outside, and meanwhile, as the fusing part is connected between the second connecting part and the third connecting part, the packaging structure can also increase the connection strength among the second connecting part, the third connecting part and the fusing part, so that the structural strength of the sampling terminal is ensured; because be provided with fusing part in this sampling terminal, when the sampling pencil takes place the short circuit, fusing part in the sampling terminal will take place fusing to electric core emergence thermal runaway has been avoided.

The sampling harness structure provided by the utility model comprises a PCBA (printed circuit board assembly) board, a wire, a temperature sensor and a plurality of sampling terminals, wherein the temperature sensor and the plurality of sampling terminals are electrically connected with the PCBA board through the wire, when the sampling harness is short-circuited, a fusing part in the sampling terminal can be fused, so that the thermal runaway of a battery cell is avoided.

Drawings

Fig. 1 is a schematic diagram of a sampling terminal proposed by the present invention;

fig. 2 is an exploded view of a sampling terminal according to the present invention;

fig. 3 is a schematic view of the sampling terminal provided by the utility model matched with a tab and a bus bar.

In the figure:

100. a tab; 200. a bus bar;

1. a first connection portion; 2. a second connecting portion; 3. a third connecting portion; 4. a fusing portion; 5. a packaging structure;

11. an opening; 21. a buffer member; 22. mounting holes; 51. a first housing; 52. a second housing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

This embodiment provides a sampling pencil structure, and this sampling pencil structure includes PCBA board, wire, temperature sensor and a plurality of sampling terminal, and temperature sensor and a plurality of sampling terminal pass through the wire and are connected with PCBA board electricity, and temperature sensor is used for detecting the temperature of battery module, and sampling terminal is used for gathering the voltage of the electric core that corresponds.

As shown in fig. 1 and fig. 2, the sampling terminal includes a first connecting portion 1 and a second connecting portion 2 connected in sequence, one end of the first connecting portion 1, which is away from the second connecting portion 2, is used for connecting a wire, the sampling terminal further includes a third connecting portion 3, a fusing portion 4 and a packaging structure 5, the third connecting portion 3 and one end of the second connecting portion 2, which is away from the first connecting portion 1, are arranged at an interval, and the third connecting portion 3 can be connected with a tab 100 of a battery cell by welding (see fig. 3); one end of the fusing part 4 is connected with the second connecting part 2, the other end of the fusing part 4 is connected with the third connecting part 3, and the fusing part 4 is made of fusing materials; packaging structure 5 cladding is in fusing portion 4 to keep apart fusing portion 4 with the outside, simultaneously, because be connected with fusing portion 4 between second connecting portion 2 and the third connecting portion 3, this packaging structure 5 can also increase the joint strength between second connecting portion 2, third connecting portion 3 and fusing portion 4, thereby has guaranteed the structural strength of this sampling terminal.

When the sampling wire harness is in short circuit, the fusing part 4 in the sampling terminal can be fused, so that the thermal runaway of the battery cell is avoided, and the sampling wire harness structure adopts the sampling terminal with the fusing part 4, so that the thermal runaway of the battery cell caused by the short circuit of the sampling wire harness can be avoided, and the volume of the sampling wire harness is greatly reduced; in addition, compare in current sampling pencil that adopts the fuse, because sampling pencil structure in this embodiment has adopted 4 pieces of fusing and low in cost's sampling terminal for this sampling pencil structure's cost is lower, thereby has reduced the cost of battery module and battery package.

Preferably, the fusing part 4 is welded to the second connection part 2 and the third connection part 3; of course, the fusing part 4 may be connected to the second and third connecting

parts

2 and 3 by pressing using a punching technique.

As shown in fig. 2, the second connection portion 2 is provided with a buffer member 21, the buffer member 21 can be abutted against an end plate of the battery module, and when the battery module vibrates, the buffer member 21 can absorb the energy of the vibration, so as to reduce the vibration of the third connection portion 3 and the tab 100, so as to play a role of buffering, thereby preventing the third connection portion 3 and the tab 100 from being detached from each other; in order to facilitate the installation of the buffer member 21, the present embodiment provides an installation hole 22 on the second connection portion 2, and the buffer member 21 can pass through the installation hole 22 to install the buffer member 21 on the third connection portion 3, and it should be mentioned that the buffer member 21 and the installation hole 22 are in an interference fit.

In order to facilitate the connection of a wire, a connecting hole is formed in one end of the first connecting part 1, which is far away from the second connecting part 2, the wire can be inserted into the connecting hole, and the first connecting part 1 can be extruded and deformed to press the wire into the connecting hole, so that the wire is electrically connected with the first connecting part 1; in addition, an opening 11 is formed in the side wall of the first connecting portion 1, the opening 11 is communicated with the connecting hole, the end of the wire can pass through the opening 11, and the wire can be wound around the end of the first connecting portion 1 through the opening 11, so that the wire and the first connecting portion 1 are connected more firmly; as shown in fig. 3, the first connecting portion 1 can also be engaged with the bus bar 200 of the battery module to fix the sampling terminal.

Preferably, the fusing part 4 in the present embodiment employs a fuse wire made of antimony, tin and lead.

In the present embodiment, the package structure 5 is made of an insulating material; preferably, the package structure 5 is made of plastic, which can ensure the strength of the package structure 5 while insulating. Optionally, the package structure 5 includes a first housing 51 and a second housing 52, and the first housing 51 and the second housing 52 cooperate to form the package structure 5, so that the package structure 5 covers the fuse portion 4.

It is conceivable that the size of the third connection portion 3 in the present embodiment may be adjusted according to the welding requirement with the tab 100.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a sampling terminal, its characterized in that includes consecutive first connecting portion (1) and second connecting portion (2), keeping away from of first connecting portion (1) the one end of second connecting portion (2) is used for connecting wire, sampling terminal still includes:

the third connecting part (3) is arranged at an interval with one end, far away from the first connecting part (1), of the second connecting part (2), and the third connecting part (3) can be connected with a lug (100) of a battery cell in a welding mode;

the fuse part (4), one end of the fuse part (4) is connected with the second connecting part (2), the other end of the fuse part is connected with the third connecting part (3), and the fuse part (4) is made of fuse materials; and

and the packaging structure (5) is coated on the fusing part (4).

2. The sampling terminal according to claim 1, characterized in that the fusing part (4) is welded to the second connection part (2) and the third connection part (3).

3. The sampling terminal according to claim 1, characterized in that the fusing part (4) is crimped with the second connection part (2) and the third connection part (3).

4. The sampling terminal according to claim 1, characterized in that one end of the first connection portion (1) remote from the second connection portion (2) is provided with a connection hole to which the wire can be plugged and the first connection portion (1) can be crimped to the wire.

5. The sampling terminal according to claim 4, characterized in that an opening (11) is provided on a side wall of the first connection portion (1), the opening (11) communicates with the connection hole, and an end portion of the wire can pass through the opening (11).

6. The sampling terminal according to claim 1, characterized in that a buffer (21) is provided on the second connection portion (2), the buffer (21) being capable of abutting against an end plate of a battery module.

7. The sampling terminal according to claim 6, characterized in that the buffer (21) is made of a rubber material.

8. The sampling terminal according to claim 1, characterized in that the fusing part (4) is a fusible link.

9. The sampling terminal according to any of claims 1-8, characterized in that the encapsulation structure (5) is made of an insulating material.

10. A sampling harness structure comprising a PCBA board, wires, a temperature sensor and a plurality of sampling terminals as claimed in any one of claims 1 to 9, the temperature sensor and plurality of the sampling terminals being electrically connected to the PCBA board by the wires.