CN219163635U - Busbar support, busbar support assembly and cell module - Google Patents

Abstract

The utility model relates to the technical field of power batteries, in particular to a busbar bracket, a busbar bracket assembly and a battery cell module, wherein the busbar bracket comprises a busbar bracket body and an error proofing part; the busbar support body is provided with a notch, and the error proofing part is arranged in the notch. Through increasing the mistake proofing portion, make different types of busbar support have different characteristics, mention the warning effect to the assembler, solved the mistake-assembling problem of busbar support, ensured production beat. Moreover, the error proofing portion is mounted in the notch. On the basis of guaranteeing that the busbar support has an error proofing function, the whole size and the weight of the busbar support are not greatly changed, and the busbar support and the cell module are beneficial to realizing light-weight design.

Description

Busbar support, busbar support assembly and cell module

Technical Field

The utility model relates to the technical field of power batteries, in particular to a busbar bracket, a busbar bracket assembly and a battery cell module.

Background

To date, the development of the power battery industry has sought to install more cells in the limited space within the battery pack in order to increase the energy density of the battery pack. Meanwhile, the weight of the battery pack is continuously compressed, so that the energy utilization rate of the vehicle to the battery pack is improved. Thus, blade batteries are born. With the development of blade batteries, LCTP (Long Cell To Pack, long cell, modular-free power battery pack) solution stands out. The LCTP scheme directly integrates the battery cell into a battery pack, and a blade battery cell module is directly formed in the battery pack. The traditional battery pack production process is replaced, the battery pack production process is simplified, the use of auxiliary parts such as connecting pieces and the like which do not generate energy is reduced, and the space utilization rate and the energy density of the battery pack are effectively improved.

For the LCTP scheme, one pole is disposed at each of opposite ends of each cell. The battery cells are sequentially stacked to form a battery cell stack body, and a plurality of pole posts are respectively arranged on two opposite side surfaces of the battery cell stack body. And bus bar bracket assemblies are respectively fixed on two opposite side surfaces of the cell stack body to form a cell module. The busbar bracket assembly achieves the purpose of connecting a plurality of battery cell monomers in series/parallel, and meanwhile, the temperature of each battery cell monomer can be sampled. However, due to different temperature sampling points, a plurality of busbar bracket assemblies are often involved in the same battery pack, so that the problem of wrong assembly is very easy to occur, and the production beat is influenced.

Therefore, how to solve the problem of the wrong mounting of the busbar bracket and ensure the production takt becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In order to solve the problem that the bus bar support is easy to be wrongly assembled and the production beat is influenced, the utility model provides a bus bar support, a bus bar support assembly and a battery cell module.

The utility model provides a busbar bracket for realizing the purpose, which comprises a busbar bracket body and an error prevention part;

the busbar support body is provided with a notch, and the error proofing part is arranged in the notch.

In some embodiments, two opposite inner walls of the notch are respectively provided with a guide post;

correspondingly, the opposite sides of the error proofing part are respectively provided with guide grooves matched with the guide columns.

In some embodiments, the error proofing portion is elongated;

the error-proof part is provided with an error-proof positioning hole.

In some embodiments, a plurality of busbar sheet accommodating grooves are formed in one side surface of the busbar support body, and a plurality of explosion-proof valve avoiding holes are formed in the lower portion of the busbar support body;

the plurality of busbar accommodating grooves are distributed along the length direction of the busbar bracket body;

the explosion-proof valve avoidance holes are distributed along the length direction of the busbar bracket body;

and anti-mounting reverse ribs are arranged in each collecting piece accommodating groove.

In some embodiments, adjacent sides of two adjacent busbar accommodating grooves are provided with a first limiting part and a second limiting part.

In some embodiments, a nickel sheet welding avoidance groove is arranged in each busbar accommodating groove.

In some embodiments, the notch is provided at the top and/or bottom end of the bus bar bracket body.

In some embodiments, the error proofing portion is removably coupled to the bus bar bracket body.

A busbar bracket assembly based on the same concept comprises a busbar sheet, a flexible circuit board and a busbar bracket provided by any of the specific embodiments;

a plurality of bus sheet accommodating grooves are formed in one side surface of the bus bar bracket body of the bus bar bracket;

the plurality of busbar accommodating grooves are distributed along the length direction of the busbar bracket body;

the plurality of the confluence sheets are fixed in the confluence sheet accommodating grooves in a one-to-one correspondence manner;

the flexible circuit board is fixed on one side surface of the busbar bracket body and is respectively connected with each busbar piece.

Based on the same conception, at least one side of the battery core module is provided with the busbar support assembly provided by any of the specific embodiments.

The utility model has the beneficial effects that:

(1) Through increasing the mistake proofing portion, make different types of busbar support have different characteristics, mention the warning effect to the assembler, solved the mistake-assembling problem of busbar support, ensured production beat.

(2) A notch is arranged on the busbar bracket body, and the error proofing part is arranged in the notch. On the basis of guaranteeing that the busbar support has an error proofing function, the whole size and the weight of the busbar support are not greatly changed, and the busbar support and the cell module are beneficial to realizing light-weight design.

(3) The error-proofing part is detachably connected with the busbar bracket body. For the form that mistake proofing portion and busbar support body are integral type, processing manufacturing mistake proofing portion and busbar support body respectively has reduced the requirement to the mold processing, has saved the processing cost, need not frequent change different mold processing, has improved the manufacturing beat.

Drawings

FIG. 1 is a schematic view of some embodiments of a bus bar bracket according to the present utility model;

FIG. 2 is a schematic view of some embodiments of the bus bar bracket body of the bus bar bracket shown in FIG. 1;

FIG. 3 is a schematic view of some embodiments of the error proofing portion of the bus bar bracket shown in FIG. 1;

fig. 4 is a schematic view of another embodiment of a bus bar bracket according to the present utility model.

In the drawings, 100, bus bar brackets; 110. a busbar bracket body; 111. a confluence sheet accommodating groove; 1111. anti-reverse reinforcement is arranged; 1112. welding nickel plates to avoid the groove; 112. an explosion-proof valve avoiding hole; 113. a mounting hole; 114. a first limit part; 115. a second limit part; 116. a notch; 1161. a guide post; 1162. the clamping bulge; 117. positioning columns; 120. an error prevention part; 121. error-proofing positioning holes; 122. an error-proof mark; 123. a clamping hole; 124. a guide groove.

Detailed Description

The following describes in further detail the specific embodiments of the utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, 2 and 3, as some embodiments of the present utility model, a bus bar bracket 100 includes a bus bar bracket body 110 and an error proofing portion 120. The error proofing part 120 is mounted on the busbar bracket body 110.

In such embodiments, the busbar holder body 110 is used as a carrier for a plurality of busbars and a single flexible circuit board, which is suitable for blade cell modules, particularly for blade cells with a thinner overall thickness and cell modules requiring a temperature acquisition of the top cover. By adding the error proofing part 120, the bus bar bracket 100 of different types has different characteristics, and the reminding function is mentioned for assembly staff, so that the problem of error assembly of the bus bar bracket 100 is solved, and the production beat is ensured.

As shown in fig. 2, a coordinate system is established, the X-axis extending direction is the body length direction of the busbar holder body 110, the Y-axis extending direction is the body height direction of the busbar holder body 110, and the Z-axis extending direction is the body thickness direction of the busbar holder body 110. The height of the buss bar support body 110 can affect the overall height of the cell module.

In some of these applications, the busbar holder body 110 is not provided with the notch 116, and the error proofing portion 120 is mounted on the busbar holder body 110. Thus, the bus bar bracket 100 has an error-proofing function.

In other applications, the busbar holder body 110 is provided with a notch 116, and the error proofing portion 120 is mounted in the notch 116. The thickness of the error-proofing portion 120 is less than or equal to the thickness of the busbar bracket body 110, and the top end surface of the error-proofing portion 120 is not higher than the top end surface of the busbar bracket body 110. Therefore, on the basis of ensuring that the busbar bracket 100 has an error-proofing function, the overall size and weight of the busbar bracket 100 are not greatly changed, and the busbar bracket 100 and the cell module are beneficial to realizing light-weight design.

In still other applications, the error proofing 120 is provided on the bus bar bracket body 110 as part of the bus bar bracket body 110. Thus, the bus bar bracket 100 has an error-proofing function.

In some of these applications, the notch 116 is provided at the top end of the bus bar bracket body 110.

In other applications, the notch 116 is provided at the bottom end of the bus bar bracket body 110.

In still other applications, notches 116 are provided at the top and bottom ends of the bus bar bracket body 110. Correspondingly, the number of the error proofing parts 120 is two, and the error proofing parts are respectively arranged in the top end notch 116 and the bottom end notch 116.

In some embodiments of the present utility model, the error proofing portion 120 is detachably connected to the busbar bracket body 110. Compared with the mode that the error-proofing part 120 and the busbar bracket body 110 are integrated, the error-proofing part 120 and the busbar bracket body 110 are respectively manufactured, the requirements on processing dies are reduced, the processing cost is saved, different processing dies do not need to be frequently replaced, and the manufacturing beat is improved.

In some of these applications, the anti-misalignment portion 120 is connected to the busbar bracket body 110 in a snap-fit manner. Specifically, a plurality of engaging protrusions 1162 are disposed at the bottom of the notch 116, and correspondingly, a plurality of engaging holes 123 are disposed at the bottom of the error preventing portion 120. The plurality of engaging protrusions 1162 are embedded in the engaging holes 123 in one-to-one correspondence with the plurality of engaging holes 123. In this way, the error proofing part 120 is convenient to install, use, disassemble and replace. Meanwhile, the clamping protrusion 1162 can limit the error preventing part 120 in the Y-axis extending direction and the Z-axis extending direction.

In other applications, the error proofing 120 is threaded or otherwise removably attached to the bus bar bracket body 110.

In some embodiments of the present utility model, guide posts 1161 are disposed on opposite inner walls of the notch 116. Correspondingly, guide grooves 124 matched with the guide posts 1161 are respectively arranged on two opposite sides of the error proofing part 120. The guide column 1161 cooperates with the guide groove 124 to play a guiding role when the error-proofing part 120 is installed, which is beneficial to improving the installation efficiency of the error-proofing part 120 and guaranteeing the positioning property of the error-proofing part 120 during installation.

In some embodiments of the present utility model, the error-proofing portion 120 is in a long shape, and the length direction of the error-proofing portion is the same as the length direction of the busbar bracket body 110. More than one error-proofing positioning holes 121 are provided on the error-proofing portion 120. It should be noted that, for different error proofing portions 120, there is a difference in the distance between the center of the error proofing hole and one of the end surfaces of the error proofing portion 120. And in the step of processing the error preventing part 120, the error preventing part 120 can be used for inserting a locating pin on a processing mould. When the busbar bracket assembly is installed on the battery core stacking body, the error-proofing holes play an error-proofing role. In addition, an error-proofing mark 122 is provided or fixed on the error-proofing part 120 so as to facilitate the assembler to visually recognize different bus bar brackets 100.

In some of these applications, the bus bar bracket body 110 is a universal bus bar bracket body 110, and the various error proofing portions 120 are different. The various error proofing parts 120 are mounted on the same bus bar bracket body 110 to form various bus bar brackets 100. The problem of the different required busbar holders 100 due to the different module sampling FPCs is solved.

In other applications, the same bus bar bracket body 110 cannot be used due to differences in the bus bar or flex circuit board structures. A variety of bus bar bracket bodies 110 may be designed as desired. Different error proofing parts 120 are mounted on different bus bar bracket bodies 110 to form the bus bar bracket 100 required for assembly.

In some embodiments of the present utility model, a plurality of bus bar receiving grooves 111 are formed on a side surface of the bus bar bracket body 110, and each bus bar receiving groove 111 is capable of receiving one bus bar. And the bus plate is limited in the X-axis extending direction and the Y-axis extending direction. The lower part of the busbar bracket body 110 is provided with a plurality of explosion-proof valve avoiding holes 112, and the explosion-proof valve avoiding holes 112 are arranged opposite to the explosion-proof valves on the battery cells one by one for pressure relief when the explosion-proof valves are opened. The plurality of bus bar receiving grooves 111 are distributed along the length direction of the bus bar bracket body 110. The explosion-proof valve avoidance holes 112 are distributed along the rectangular parallelepiped direction of the busbar bracket body 110. The upper part in each busbar accommodating groove 111 is provided with an anti-mounting anti-rib 1111, and each anti-mounting anti-rib 1111 is matched with the notch 116 on each busbar to prevent the top and bottom of the busbar from being turned over.

In some embodiments of the present utility model, adjacent sides of the adjacent two busbar accommodating grooves 111 are provided with a first limiting portion 114 and a second limiting portion 115. Specifically, the upper and lower portions of the adjacent sides of the adjacent two busbar accommodating grooves 111 are each provided with a first stopper 114 capable of stopping each busbar in the X-axis extending direction. The upper and lower parts of the adjacent sides of the two adjacent bus bar accommodating grooves 111 are respectively provided with a second limiting part 115, and the second limiting parts 115 are buckles, so that limiting effect can be achieved on each bus bar in the Z-axis direction, and the bus bars are effectively prevented from falling off from the bus bar bracket body 110.

In some embodiments of the present utility model, a plurality of mounting holes 113 are formed at the top and bottom ends of the bus bar support body 110, respectively, and the top cover of the battery module can be mounted on the bus bar support body 110 by using plastic rivets through the mounting holes 113. In addition, a positioning post 117 is provided in the middle of the top end of the busbar holder body 110. When the top cover of the battery cell module is fixed on the busbar bracket body 110, the positioning posts 117 play a role in positioning. It should be noted that, when busbar support assembly and module assembly, the locating pin looks adaptation on mounting hole and the module frock plays location installation effect, is favorable to improving the manufacturing beat.

In some embodiments of the present utility model, a nickel plate welding avoidance groove 1112 is provided at a lower portion in each of the busbar accommodating grooves 111. It should be noted that, for the flexible wiring board, a plurality of nickel plates are provided uniformly along the length direction of the flexible wiring board. Each nickel sheet needs to be connected with the lower part of one busbar sheet by laser welding. When carrying out laser welding, the welding frock sets up the cushion and dodges inslot 1112 in nickel piece welding, can play the supporting role in the welding position, avoids nickel piece rosin joint's condition to take place, has realized that nickel piece and conflux piece's good contact is connected.

Referring to fig. 1, as other embodiments of the present utility model, the error-proofing mark 122 on the error-proofing portion 120 is A1.

Referring to fig. 4, as other embodiments of the present utility model, the error-proofing mark 122 on the error-proofing portion 120 is A3.

The utility model also provides a busbar bracket assembly comprising a busbar sheet, a flexible circuit board and the busbar bracket 100 provided by any of the embodiments. A plurality of bus bar receiving grooves 111 are formed at one side of the bus bar holder body 110 of the bus bar holder 100, and the plurality of bus bar receiving grooves 111 are distributed along the length direction of the bus bar holder body 110. The plurality of bus bars are fixed in the bus bar accommodating grooves 111 in a one-to-one correspondence with the plurality of bus bar accommodating grooves 111. The error-proofing holes 121 on the error-proofing portion 120 provide the bus bar bracket assembly with error-proofing function. The flexible circuit board is fixed on one side of the busbar bracket body 110 and is respectively connected with each busbar sheet through nickel sheet welding. The flexible circuit board has a confluence sampling function.

The utility model also provides a battery cell module, and at least one side of the battery cell module is provided with the busbar bracket assembly provided by any of the specific embodiments.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.

Claims (9)

1. A bus bar bracket, comprising:

a busbar bracket body and an error prevention part;

the busbar bracket body is provided with a notch, and the error proofing part is arranged in the notch;

the error proofing part is in a long strip shape;

the mistake proofing part is provided with a mistake proofing positioning hole.

2. The bus bar bracket according to claim 1, wherein guide posts are respectively arranged on two opposite inner walls of the notch;

correspondingly, the opposite sides of the error proofing part are respectively provided with guide grooves matched with the guide columns.

3. The busbar bracket according to claim 1 or 2, wherein a plurality of busbar accommodating grooves are formed in one side surface of the busbar bracket body, and a plurality of explosion-proof valve avoiding holes are formed in the lower portion of the busbar bracket body;

the plurality of busbar sheet accommodating grooves are distributed along the length direction of the busbar support body;

the explosion-proof valve avoidance holes are distributed along the length direction of the busbar bracket body;

and anti-mounting reverse ribs are arranged in each collecting piece accommodating groove.

4. The busbar bracket of claim 3, wherein adjacent sides of adjacent two of the busbar accommodating grooves are provided with a first limit portion and a second limit portion.

5. The busbar bracket of claim 3, wherein each of the busbar accommodating grooves is provided with a nickel piece welding avoidance groove.

6. The bus bar bracket according to claim 1 or 2, wherein the notch is provided at a top end and/or a bottom end of the bus bar bracket body.

7. The bus bar bracket of claim 1 or 2, wherein the error proofing portion is detachably connected to the bus bar bracket body.

8. A busbar bracket assembly comprising a busbar sheet, a flexible circuit board and the busbar bracket of any of claims 1 to 7;

a plurality of busbar sheet accommodating grooves are formed in one side surface of the busbar support body of the busbar support;

the plurality of busbar sheet accommodating grooves are distributed along the length direction of the busbar support body;

the plurality of the confluence sheets are fixed in the confluence sheet accommodating grooves in a one-to-one correspondence manner with the plurality of confluence sheet accommodating grooves;

the flexible circuit board is fixed on one side face of the busbar bracket body and is connected with each busbar sheet respectively.

9. A battery cell module wherein at least one side of the battery cell module is provided with the busbar bracket assembly of claim 8.

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