CN219843113U - CCS assembly, battery module and battery pack - Google Patents

Abstract

The utility model provides a CCS assembly, a battery module and a battery pack, wherein the CCS assembly comprises a bracket; the positive electrode busbar is arranged at one end of the bracket, and the end part of the bracket, on which the positive electrode busbar is assembled, is a positive electrode end; the negative electrode busbar is arranged at the other end of the bracket, and the end part of the bracket, on which the negative electrode busbar is assembled, is a negative electrode end; the guide bars are arranged on the support, a plurality of guide bars are arranged, the guide bars are sequentially connected in series along the positive electrode bus bars to the negative electrode bus bars, and the positive electrode bus bars and the negative electrode bus bars are respectively connected in series with the adjacent guide bars; the flexible circuit board is arranged on one side of the bracket in the width direction, and mounting seats are arranged at the positive end and the negative end; the connector is arranged on the mounting seat, and the flexible circuit board is connected to the connector. The utility model can be provided with the mounting seats for assembling the connectors at the positive end and the negative end of the bracket, and the structural design of the bracket can effectively solve the problem that materials of CCS components are incompatible in the production of different battery modules.

Description

CCS assembly, battery module and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a CCS assembly, a battery module and a battery pack.

Background

Currently, most CCS components of a cylindrical power battery correspond to one CCS component, specifically, the classification of the modules is mainly based on the positions of connectors and buses on the CCS component, for example, when the connectors of the CCS component of the battery module are disposed near the positive bus side, the battery module may be referred to as a positive module; when the connector of the CCS assembly of the battery module is disposed near the negative bus bar side, the battery module may be referred to as a negative module. This means that two kinds of battery modules correspond two kinds of CCS subassemblies, and the material is incompatible, can lead to product die sinking and manufacturing cost increase in production, and further lead to the material kind to increase, causes the material to manage the degree of difficulty increase to influence industrialization production beat.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a CCS assembly which can realize material compatibility of different types of battery modules and save production cost.

A second object of the present utility model is to provide a battery module, which is convenient to assemble and process.

Another object of the present utility model is to provide a battery pack that is inexpensive to produce.

The embodiment of the utility model is realized by the following technical scheme:

a CCS assembly, comprising: a bracket; the positive electrode busbar is arranged at one end of the bracket, and the end part of the bracket, on which the positive electrode busbar is assembled, is a positive electrode end; the negative electrode busbar is arranged at the other end of the bracket and is opposite to the positive electrode busbar, and the end part of the bracket, on which the negative electrode busbar is assembled, is a negative electrode end; the guide bars are arranged on the support, a plurality of guide bars are arranged, the guide bars are sequentially connected in series from the positive electrode bus bars to the negative electrode bus bars, and the positive electrode bus bars and the negative electrode bus bars are respectively connected in series with the adjacent guide bars; the flexible circuit board is arranged on one side of the bracket in the width direction, and the positive end and the negative end are provided with mounting seats; and the mounting seat is used for assembling the connector, and the flexible circuit board is connected to the connector.

According to a preferred embodiment, a detection nickel piece is arranged on the flexible circuit board, and the detection nickel piece is used for being connected to at least one of the positive electrode bus bar, the negative electrode bus bar and the flow guide bar; the support is provided with accommodating grooves on two sides in the width direction of the support, and the accommodating grooves are used for accommodating the detection nickel plates on the flexible circuit board.

According to a preferred embodiment, a plurality of the receiving grooves on one side in the width direction of the bracket are defined as a first groove group, and a plurality of the receiving grooves on the other side in the width direction of the bracket are defined as a second groove group; the first groove group and the second groove group are arranged on the bracket in a central symmetry mode.

According to a preferred embodiment, the mounting base at the positive end and the mounting base at the negative end are arranged centrally and symmetrically on the support.

According to a preferred embodiment, the mounting block is injection molded integrally with the bracket.

According to a preferred embodiment, a fixing groove for accommodating a battery cell is formed in the inner side surface of the support, a positive hole and a negative hole are formed in the bottom of the fixing groove in a penetrating mode, the positive hole is used for exposing a battery positive electrode of the battery cell on the outer side surface of the support, and the negative hole is used for exposing a battery negative electrode of the battery cell on the outer side surface of the support; the accommodating groove is formed in the outer side face of the support, and the accommodating groove is communicated with the positive electrode hole and/or the negative electrode hole of the fixing groove adjacent to the accommodating groove.

According to a preferred embodiment, the receiving groove communicates with the negative electrode hole of the fixing groove adjacent thereto.

According to a preferred embodiment, the mounting seat at the positive electrode end and the mounting seat at the negative electrode end are arranged in a staggered manner in the width direction of the bracket.

The battery module is characterized by comprising the CCS component.

A battery pack comprises the battery module.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

the positive electrode end and the negative electrode end of the bracket are respectively provided with the mounting seats for assembling the connectors, when the bracket is used, in different types of battery module production scenes, a user can selectively assemble the connectors on the mounting seats at the positive electrode end and the mounting seats at the negative electrode end so as to adapt to the production requirements of the corresponding positive electrode module and negative electrode module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an exploded view of a CCS assembly according to an embodiment of the present utility model;

fig. 2 is a schematic top view of a bracket according to an embodiment of the present utility model;

fig. 3 is a schematic bottom view of a bracket according to an embodiment of the present utility model;

fig. 4 is a schematic front view of a guide bar according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a battery cell according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a negative electrode module according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of an anode module according to an embodiment of the present utility model.

Icon: 100. a battery cell; 101. a battery positive electrode; 102. a battery negative electrode; 200. a CCS component; 210. a positive bus bar; 211. a guide row; 2111. a main body; 2112. a positive electrode region; 2113. a negative electrode region; 2114. a connection section; 212. a negative electrode bus bar; 220. a connector; 230. a flexible circuit board; 231. a connection part; 232. an extension; 233. detecting a nickel sheet; 240. a bracket; 241. a mounting base; 242. a positive electrode hole; 243. a negative electrode hole; 244. a temperature detection hole; 245. a receiving groove; 246. a fixing groove.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are referred to, the positional relationship is based on the positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, 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 unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

Further, in the description of the present utility model, it should be understood that the terms "upper", "lower", "inner", "outer", and the like are described with reference to the angle shown in the drawings, and should not be construed as limiting the specific embodiments. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Referring to fig. 1 to 7, a CCS assembly is applied to a cylindrical power battery module, which includes a plurality of battery cells 100. As shown in fig. 5 to 7, the battery positive electrode 101 and the battery negative electrode 102 of the battery cell 100 are on the same side, and the battery positive electrode 101 protrudes from the battery negative electrode 102 in the axial direction of the battery cell 100. Specifically, the CCS assembly 200 includes a rack 240, a positive bus bar 210, a negative bus bar 212, a deflector bar 211, and a flexible circuit board 230, wherein: the positive electrode bus bar 210 is disposed at one end of the bracket 240; the negative electrode bus bar 212 is arranged at the other end of the bracket 240, and the negative electrode bus bar 212 is arranged opposite to the positive electrode bus bar 210; the guide bars 211 are arranged on the bracket 240, the guide bars 211 are provided with a plurality of guide bars 211, the guide bars 211 are sequentially connected in series along the positive electrode bus bar 210 to the negative electrode bus bar 212, and the positive electrode bus bar 210 and the negative electrode bus bar 212 are respectively connected in series with the adjacent guide bars 211; the flexible circuit board 230 is disposed at one side of the bracket 240 in the width direction; defining the end of the bracket 240 on which the positive bus bar 210 is mounted as a positive end and the end of the bracket 240 on which the negative bus bar 212 is mounted as a negative end; the positive and negative terminals are each provided with a mounting seat 241 for mounting the connector 220, and the flexible circuit board 230 is connected to the connector 220. In this embodiment, through the structural design of integrating the positive bus bar 210, the negative bus bar 212 and the flow guide bar 211 on the bracket 240, the integrated material feeding of the CCS assembly 200 can be realized, the time and steps for assembling the CCS assembly 200 and the battery cell 100 into a battery module can be reduced, and the assembly efficiency can be effectively improved. Alternatively, the bracket 240 is an injection molded plastic part. The bracket 240 made of plastic is light in weight and high in strength, and can provide effective support for the positive bus bar 210, the guide bar 211 and the negative bus bar 212. In this embodiment, as shown in fig. 6 and 7, the CCS assembly 200 is configured to connect each battery cell 100 in series in the length direction of the battery module, and selectively collect a voltage signal or a temperature signal of the battery cell 100 in the direction, so as to monitor the temperature and the voltage signal of the battery cell 100 in the battery module, and manage the battery module in cooperation with the BMS. Further, as shown in fig. 1 and 3, both the positive end and the negative end of the bracket 240 are provided with mounting seats 241 for assembling the connector 220, when in use, in the production scenes of different types of battery modules (positive electrode module and negative electrode module), a user can selectively assemble the connector 220 on the mounting seats 241 at the positive end and the mounting seats 241 at the negative electrode end to adapt to the production requirements of the corresponding positive electrode module and negative electrode module, and the structural design of the bracket 240 can effectively solve the problem that the CCS assembly 200 is incompatible in material in the production of different battery modules, so that the production cost of the battery modules is reduced, the material management and control difficulty is reduced, and the production tact is improved. As shown in fig. 6 and 7, the negative electrode module and the positive electrode module, respectively.

Further, as shown in fig. 1 and 3, the mounting seat 241 at the positive end and the mounting seat 241 at the negative end are disposed on the bracket 240 in a central symmetry. The bracket 240 is in a cuboid shape as a whole, the positive electrode end and the negative electrode end are positioned at two end parts of the bracket 240 in the length direction, and the two mounting seats 241 are arranged in a central symmetry manner, so that when the bracket 240 is used, the bracket 240 can be assembled by adapting to different types of battery modules by rotating 180 degrees along the central symmetry points of the two mounting seats 241. As shown in fig. 6, in this state, the battery module is a negative electrode module, which constitutes a positive electrode module as shown in fig. 7, by rotating the CCS assembly 200, i.e., the bracket 240, 180 ° around the center symmetry point of the two mounting seats 241 on the battery cell 100 group. It should be noted that, after the adjustment of the bracket 240, the assembly position of the flexible circuit board 230 on the bracket 240 can be adjusted according to the need, so that the temperature and voltage signals of the battery cells 100 can be selectively detected in the length direction of the battery module, and the battery cells can be connected to the corresponding connectors 220.

Preferably, the mounting base 241 is integrally injection molded with the bracket 240.

In this embodiment, as shown in fig. 1 to 4, the positive electrode bus bar 210, the plurality of flow guide bars 211, and the negative electrode bus bar 212 are sequentially arranged in the length direction of the battery module, for connecting adjacent battery cells 100 in parallel in the width direction of the support 240, and connecting adjacent battery cells 100 in series in the length direction of the support 240. In this embodiment, a plurality of battery cells 100 forming a cylindrical power battery module are arranged in an array along the length direction of the support 240, so as to form one battery cell of the cylindrical power battery module. As shown in fig. 6 and 7, the cylindrical power battery module in the present embodiment includes four battery cells arranged in parallel. In order to improve the energy density, four parallel-arranged battery cells are stacked in the width direction of the support 240, and the battery cells 100 of the four battery cells are arranged in a staggered manner in the length direction of the support 240, so that more cylindrical battery cells 100 can be arranged in the same area.

The battery cells 100 connected with the positive electrode bus bar 210 are defined as first batteries, the battery adjacent to the first battery in the length direction of the bracket 240 is defined as second battery, that is, in the length direction of the bracket 240, each battery cell 100 defining a battery unit is sequentially a first battery, a second battery … nth battery (N is greater than or equal to 1, and is a positive integer), that is, one battery unit is formed by arranging N battery cells 100 in an array in the length direction of the bracket 240. In use, the positive bus bar 210 is connected to the battery positive electrode 101 of the first battery, one end of the guide bar 211 adjacent to the positive bus bar 210 in the length direction of the bracket 240 is connected to the battery negative electrode 102 of the first battery, and the second end of the guide bar 211 is connected to the battery positive electrode 101 of the second battery; it is understood that the number of the flow guide bars 211 between the positive electrode bus bar 210 and the negative electrode bus bar 212 in the length direction of the bracket 240 is N-1. For example, if ten battery cells 100 are arranged in an array along the length direction of the support 240, nine guide rows 211 are required for connecting the ten battery cells 100 in series. Similarly, one end of the (N-1) -th guide bar 211 is connected to the battery cathode 102 of the (N-I) -th battery cell 100, the other end of the (N-1) -th guide bar 211 is connected to the battery anode 101 of the (N) -th battery cell 100, and the cathode bus bar 212 is connected to the battery cathode 102 of the (N) -th battery cell 100, so that the series connection of the anode bus bar 210, the guide bar 211, and the cathode bus bar 212 to the (N) -th battery cell 100 in the length direction of the bracket 240 is realized. Meanwhile, the battery cells 100 of the four battery cells stacked in the width direction of the bracket 240 are connected in parallel by the guide row 211, so that the currents of the plurality of battery cells 100 of the four battery cells stacked in the length direction of the bracket 240 can be distributed uniformly, and the reliability of the connection between the battery cells 100 is ensured.

In other embodiments, a cylindrical power battery module may be formed from one or more battery cells. When the cylindrical power battery module is formed of a plurality of battery cells, that is, the plurality of battery cells of the cylindrical power battery module are stacked in the width direction of the bracket 240, accordingly, the guide row 211 can connect the plurality of battery cells in parallel in the width direction of the bracket 240; the positive electrode bus bar 210 and the negative electrode bus bar 212 each have a plurality of ends corresponding to the plurality of battery cells one by one for connection with the battery positive electrode 101 or the battery negative electrode 102 of the battery cell 100 so that the first or last battery cell 100 of the plurality of battery cells in the length direction of the holder 240 can be connected in parallel in the width direction of the holder 240.

Further, as shown in fig. 4, the guide row 211 includes four main bodies 2111 arranged in the width direction of the holder 240, corresponding to the four battery cells in the present embodiment, and adjacent two main bodies 2111 are connected by a connection section 2114 to connect the four battery cells 100 in parallel in the width direction of the holder 240. The front end of body 2111 is a positive electrode region 2112 for connection to the battery positive electrode 101 of the battery cell 100, and the rear end of body 2111 is a negative electrode region 2113 for connection to the battery negative electrode 102 of the battery cell 100.

In the present embodiment, the flexible circuit board 230 is provided with a detection nickel piece 233 for connecting to at least one of the positive electrode bus bar 210, the negative electrode bus bar 212, and the guide bar 211; the bracket 240 is provided with receiving grooves 245 at both sides in the width direction thereof for receiving the detection nickel pieces 233 on the flexible circuit board 230. As shown in fig. 1, the flexible circuit board 230 is extended along the length direction of the bracket 240 to one side of the bracket 240, and the flexible circuit board 230 is provided with the same number of extension parts 232 as one battery unit cell 100 for mounting the detection nickel plate 233. In this embodiment, it is preferable that the positive bus bar 210, the negative bus bar 212 and the plurality of flow guide bars 211 are respectively and uniformly connected with the detection nickel plates 233, so as to realize the overall monitoring of temperature and voltage signals of the battery module assembled by the CCS assembly 200 provided by this embodiment. The end of the flexible circuit board 230 near the connector 220 is bent to form a connection portion 231 for connection to the connector 220. Specifically, the extending portion 232 and/or the detecting nickel piece 233 are embedded in the accommodating groove 245, and the detecting nickel piece 233 extends to the adjacent positive bus bar 210, negative bus bar 212 and guide bar 211. The receiving groove 245 may structurally protect the extension 232 and the detection nickel tab 233 while facilitating the assembly of the flexible circuit board 230 to the bracket 240 to reduce the overall thickness of the CCS assembly 200.

Further, a plurality of receiving grooves 245 at one side of the bracket 240 in the width direction are defined as a first groove group, and a plurality of receiving grooves 245 at the other side of the bracket 240 in the width direction are defined as a second groove group; the first groove group and the second groove group are arranged on the bracket 240 in a central symmetry. The arrangement is the same as the mounting seat 241, so that when the bracket 240 is used, the bracket can be adapted to the assembly of different types of battery modules by rotating the bracket by 180 degrees along the central symmetry point of the first groove group and the second groove group.

In this embodiment, as shown in fig. 2 and 3, the mounting seat 241 at the positive electrode end and the mounting seat 241 at the negative electrode end are arranged in a staggered manner in the width direction of the bracket 240. By this arrangement, the length of the connection portion 231 formed by bending the flexible circuit board 230 can be reduced, so that the interference probability of the connection portion 231 with other components on the connector 220 side in the assembly process is reduced, and the safety is high. The flexible circuit board 230 and the mount 241 are assembled in the vicinity of each other in the width direction of the holder.

In this embodiment, as shown in fig. 1 to 3, a fixing groove 246 for accommodating the battery cell 100 is provided on the inner side surface of the bracket 240, a positive hole 242 and a negative hole 243 are provided at the bottom of the fixing groove 246 in a penetrating manner, the positive hole 242 is used for exposing the battery positive electrode 101 of the battery cell 100 on the outer side surface of the bracket 240, and the negative hole 243 is used for exposing the battery negative electrode 102 of the battery cell 100 on the outer side surface of the bracket 240; the accommodating groove 245 is disposed on the outer side surface of the bracket 240, and the accommodating groove 245 communicates with the positive electrode hole 242 and/or the negative electrode hole 243 of the fixing groove 246 adjacent thereto. In the present embodiment, the accommodation groove 245 communicates with the anode hole 243 adjacent thereto. The detection nickel piece 233 is connected to the negative electrode region 2113 of the deflector 211.

In other embodiments, the receiving groove 245 may communicate with the positive electrode hole 242. The detection nickel piece 233 is connected to the positive electrode region 2112 of the deflector 211. Of course, in other embodiments, the detection nickel tab 233 may also be directly connected to the battery positive electrode 101 or the battery negative electrode 102.

In this embodiment, the bottom of the fixing groove 246 is further provided with a temperature detecting hole 244 therethrough. The temperature detection hole 244 is used to expose the battery negative electrode 102 of the battery cell 100 on the outer side of the holder 240, and an NTC may be separately provided in the temperature detection hole 244 and connected to the battery negative electrode 102 for temperature monitoring of the battery cell 100.

The embodiment also provides a battery pack, which comprises the battery module.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A CCS assembly, comprising:

a bracket (240);

the positive electrode bus bar (210) is arranged at one end of the bracket (240), and the end part of the bracket (240) on which the positive electrode bus bar (210) is assembled is the positive electrode end;

a negative electrode busbar (212) disposed at the other end of the bracket (240) and disposed opposite to the positive electrode busbar (210), wherein the end of the bracket (240) on which the negative electrode busbar (212) is mounted is the negative electrode end;

the guide bars (211) are arranged on the support (240), the guide bars (211) are provided with a plurality of guide bars (211) which are sequentially connected in series from the positive electrode bus bar (210) to the negative electrode bus bar (212), and the positive electrode bus bar (210) and the negative electrode bus bar (212) are respectively connected in series with the adjacent guide bars (211); and

a flexible circuit board (230) arranged on one side of the bracket (240) in the width direction, wherein the positive end and the negative end are provided with mounting seats (241);

-a connector (220), the mounting base (241) for mounting the connector (220), the flexible circuit board (230) being connected to the connector (220).

2. The CCS assembly according to claim 1, characterized in that a detection nickel plate (233) is provided on the flexible circuit board (230), the detection nickel plate (233) being adapted to be connected to at least one of the positive bus bar (210), the negative bus bar (212) and the deflector bar (211);

the two sides of the bracket (240) in the width direction are provided with accommodating grooves (245) for accommodating the detection nickel plates (233) on the flexible circuit board (230).

3. The CCS assembly according to claim 2, wherein a plurality of said receiving grooves (245) defined on one side in a width direction of said rack (240) are a first groove group, and a plurality of said receiving grooves (245) defined on the other side in the width direction of said rack (240) are a second groove group;

the first groove group and the second groove group are arranged on the bracket (240) in a central symmetry mode.

4. A CCS assembly according to any one of claims 1-3, characterized in that the mounting (241) at the positive end and the mounting (241) at the negative end are arranged centrosymmetrically on the support (240).

5. The CCS assembly according to claim 1, characterized in that the mounting base (241) is integrally injection molded with the bracket (240).

6. The CCS assembly according to claim 2, characterized in that an inner side surface of the bracket (240) is provided with a fixing groove (246) for accommodating a battery cell (100), a bottom of the fixing groove (246) is provided with a positive hole (242) and a negative hole (243) in a penetrating manner, the positive hole (242) is used for exposing a battery positive electrode (101) of the battery cell (100) at an outer side surface of the bracket (240), and the negative hole (243) is used for exposing a battery negative electrode (102) of the battery cell (100) at an outer side surface of the bracket (240);

the accommodating groove (245) is arranged on the outer side surface of the bracket (240), and the accommodating groove (245) is communicated with the positive electrode hole (242) and/or the negative electrode hole (243) of the fixing groove (246) adjacent to the accommodating groove.

7. The CCS assembly of claim 6, wherein the receiving groove (245) communicates with the negative electrode hole (243) of the fixing groove (246) adjacent thereto.

8. The CCS assembly according to claim 1, characterized in that said mounting seats (241) of said positive and said negative terminals are offset in the width direction of said bracket (240).

9. A battery module comprising a CCS assembly (200) as claimed in any one of claims 1-8.

10. A battery pack comprising the battery module according to claim 9.