CN221201441U - Battery module and battery pack - Google Patents

Abstract

The application provides a battery module and a battery pack, wherein the battery module comprises a battery core module, an end plate, a fixing seat and a flexible acquisition plate; the end plate is fixedly connected to the first side surface of the battery cell module; the fixed seat is arranged on the end plate; the flexible acquisition board comprises a first board part and a second board part which is integrally connected with the first board part in a bending way; the first plate is positioned on the end plate and is connected with the fixed seat, and the second plate is positioned on the second side surface of the cell module and is electrically connected with the cell module. So set up, the flexible collection board is whole to assemble the position accurate, and such design makes flexible collection board have and prevents slow-witted effect, and the flexible collection board installation direction of corresponding face is fixed, has clear direction recognition effect, and the assembly process is quick and accurate, has solved the flexible collection board among the prior art in the battery box and has taken place the problem that assembly precision is poor, misplaced even easily in the installation.

Description

Battery module and battery pack

Technical Field

The application relates to the technical field of battery production, in particular to a battery module and a battery pack.

Background

When the battery is used as energy power to be applied to a use scene, a plurality of battery modules are generally integrally installed in a battery box, and the battery box plays a role in protecting the internal battery modules and is convenient for the installation, replacement and maintenance of the battery modules.

In the battery box, a flexible acquisition board is commonly used for acquiring parameters of the battery cell, and specifically, the flexible acquisition board is connected with the battery cell through a sampling sheet so as to realize sampling. In practical cases, the flexible acquisition board needs to be connected with a plurality of sampling sheets during assembly, and the installation position of the flexible acquisition board is fixed, so that the flexible acquisition board is easy to generate the conditions of poor assembly precision and even dislocation in the installation process, and the production rhythm is slow.

Disclosure of utility model

In view of the above, the application provides a battery module and a battery pack, which are used for solving the problems that in the prior art, a flexible collecting plate in a battery box is easy to generate poor assembly precision and even dislocation in the process of installation.

In order to achieve the above purpose, the present application provides the following technical solutions:

A battery module, comprising:

The battery cell module comprises a plurality of battery cells which are arranged side by side;

the end plate is fixedly connected to the first side face of the battery cell module;

The fixed seat is arranged on the end plate;

the flexible acquisition board comprises a first board part and a second board part which is integrally connected with the first board part in a bending way;

the first plate part is positioned on the end plate and connected with the fixing seat, and the second plate part is positioned on the second side surface of the battery cell module and electrically connected with the battery cell module.

Optionally, the connector further comprises a connector sub-head, wherein the connector sub-head is arranged on the first plate part;

The fixing seat is provided with a slot facing the opening of the connector sub-head, a fixing part is arranged in the slot, and the connector sub-head is inserted into the slot and connected with the fixing part.

Optionally, the fixing seat is provided with a through hole in the length direction of the first plate portion, and the first plate portion passes through the through hole.

Optionally, a tab bracket is disposed on the second side, a tab of the battery module is fixed on the tab bracket, and the second plate is attached to the tab bracket and connected with the tab for sampling.

Optionally, one of the tab support and the second plate portion is provided with a positioning hole, and the other one is provided with a positioning column inserted into the positioning hole.

Optionally, an adhesive body is disposed on a surface of the first plate portion opposite to the end plate and a surface of the second plate portion opposite to the second side surface.

Optionally, the connector sub-head is a connector female head.

Optionally, the battery cell module further comprises a plurality of protection plates, the battery cell modules are arranged side by side, the second plate parts are at least electrically connected with the second side surfaces of the two battery cell modules, and the protection plates are covered and connected on the second plate parts.

Optionally, a buffer portion formed along the arrangement direction of the battery cells is disposed on the second plate portion, and the buffer portion is disposed opposite to the connection portion between two adjacent battery cells.

A battery pack comprising a case and the battery module of any one of the above, the battery module being mounted in the case.

The application provides a battery module which comprises a battery cell module, an end plate, a fixing seat and a flexible acquisition plate; the end plate is fixedly connected to the first side surface of the battery cell module; the fixed seat is arranged on the end plate; the flexible acquisition board comprises a first board part and a second board part which is integrally connected with the first board part in a bending way; the connector sub is arranged on the first plate part; the first plate is positioned on the end plate and is connected with the fixed seat, and the second plate is positioned on the second side surface of the cell module and is electrically connected with the cell module. So set up, the in-process of assembly, flexible collection board laminating is on electric core module's second side and end plate, owing to be equipped with the fixing base of position determination on the end plate, and first board portion can be directly with the fixing base be connected, make the position of first board portion accurate determination, thereby make the position of second board portion also confirm, in order to guarantee that flexible collection board assembly position is accurate, such design makes flexible collection board have and prevents slow-witted effect, the flexible collection board installation direction of corresponding face is fixed, have clear direction recognition effect, the assembly process is quick and accurate, flexible collection board in the battery box takes place assembly precision poor in the installation in-process easily, even dislocation's problem among the prior art has been solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a battery module according to an embodiment of the present application;

Fig. 2 is an exploded view of a battery module according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a positional relationship among a flexible collecting board, a fixing base and a connector sub-head according to an embodiment of the present application;

FIG. 4 is a top view of a fixing base according to an embodiment of the present application;

fig. 5 is a side view of a fixing base provided in an embodiment of the present application.

In fig. 1-5:

1. A cell module; 2. an end plate; 3. a fixing seat; 4. a flexible acquisition board; 5. a connector female; 6. a connector male; 7. a tab support; 8. a protective plate; 9. battery cell

31. A slot; 32. a fixing part; 33. a through hole;

41. A first plate portion; 42. a second plate portion; 43. positioning holes; 44. an adhesive body; 45. and a buffer part.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 5, the embodiment of the application provides a battery module, which comprises a battery cell module 1, an end plate 2, a fixing seat 3 and a flexible acquisition board 4; the end plate 2 is fixedly connected to the first side surface of the battery cell module 1; the fixed seat 3 is arranged on the outer plate surface of the end plate 2; the flexible collecting plate 4 comprises a first plate part 41 and a second plate part 42 which is integrally connected with the first plate part 41 in a bending way; the first plate 41 is located on the outer plate surface of the end plate 2, the first plate 41 is inserted into the fixing seat 3, and the second plate 42 is located on the second side surface of the cell module 1 and is electrically connected with the cell module 1. It should be noted that, the battery core module 1 is mainly formed by arranging and bonding a plurality of battery cores 9, and the arrangement direction of the battery cores 9 is the X-axis direction, as shown in fig. 1-2; the end plate 2 is a connecting member outside the structure of the cell module 1, and the end plate 2 can play a role of enclosure.

So set up, the in-process of assembly, flexible collection board 4 laminating is on the second side of electric core module 1 and end plate 2, owing to be equipped with the fixing base 3 of position determination on the end plate 2, and first board portion 41 can directly be pegged graft with fixing base 3 without mistake, make the position of first board portion 41 accurate determination, thereby make the position of second board portion 42 also confirm, flexible collection board 4 is whole to assemble the position accurate, such design makes flexible collection board 4 have the fool-proof effect, flexible collection board 4 installation direction of corresponding face is fixed, have clear direction recognition effect, the assembly process is quick and accurate, the problem that flexible collection board 4 in the battery box takes place assembly precision poor even dislocation easily in the installation in-process among the prior art has been solved.

Specifically, the first side surface and the second side surface are two adjacent surfaces of the battery cell module 1, that is, the flexible collecting plate 4 is bent to be L-shaped, the length direction of the first plate portion 41 is the Y-axis direction, and the length direction of the second plate portion 42 is the X-axis direction, as shown in fig. 3.

In some embodiments, the first board portion 41 is spliced with the fixing base 3 through a connector sub-head, specifically, the connector sub-head is arranged on the first board portion 41, and the connector sub-head is electrically connected with a circuit in the flexible acquisition board 4 and plays a role of splicing with an external line bank so as to transmit sampling information; the fixing base 3 has a slot 31 facing the opening of the connector tap, and a fixing portion 32 is disposed in the slot 31, and the connector tap is inserted into the slot 31 and connected with the fixing portion 32. It should be noted that, the Z-axis direction is the height direction of the cell module 1, as shown in fig. 4 to 5; the fixing portion 32 may be a spring plate structure integrally connected with the fixing base 3, and after the connector is inserted into the slot 31, the connector is pressed into the slot 31 by elastic deformation, and fixed by static friction limiting; or the fixing portion 32 may be a protrusion disposed in the slot 31, and at this time, the connector tap is provided with a groove or an opening matched with the protrusion, and after the connector tap is inserted into the slot 31, the groove or the opening is matched with the protrusion to realize the clamping connection.

So arranged, the connector sub-head is connected with the fixing base 3 along the Z-axis direction, and the freedom of movement of the connector sub-head in the Z-axis direction is limited by the fixing part 32, so that the first plate part 41 is fixed and prevented from being deviated; the flexible acquisition board 4 can be positioned very accurately and without misoperation by matching the design of the positioning column and the positioning hole 43.

Further, as shown in fig. 5, the fixing base 3 is provided with a through hole 33 in the longitudinal direction of the first plate 41, and the first plate 41 passes through the through hole 33, and the through hole 33 communicates with the slot 31. In this way, the fixing base 3 can also have an additional limiting effect on the first plate 41. Furthermore, in some embodiments, the inlet end of the through-hole 33 is provided with an inverted splayed guide structure, so that the first plate portion 41 can be more conveniently inserted into the through-hole 33.

In a specific embodiment, the second side surface is provided with a tab support 7, the tab of the battery module 1 is fixed on the tab support 7, and the second plate portion 42 is attached to the tab support 7 and is electrically connected with the tab. The second plate portion 42 may be adhered to the tab holder 7. The electrode lugs of the battery core are bent after extending out of the electrode lug support 7, and are welded to realize fixation.

So arranged, the tab support 7 provides a flat attachment location for the second plate portion 42, and the assembly is reliable.

In a preferred embodiment, one of the tab support 7 and the second plate portion 42 is provided with a positioning hole 43, and the other one is provided with a positioning post inserted into the positioning hole 43, and the positioning post extends along a direction perpendicular to the second plate portion 42, i.e. the insertion direction of the positioning post is the Y-axis direction. Preferably, the second plate part 42 is provided with a positioning hole 43, and the lug support 7 is provided with a positioning column, so that the processing is convenient.

So set up, when installing flexible collection board 4, second board portion 42 peg graft earlier with utmost point ear support 7, and then fix on utmost point ear support 7 with position determination for second board portion 42 possesses more accurate position, and prevents that second board portion 42 from shifting in X axis direction, Z axis direction, has further promoted flexible collection board 4's assembly accuracy, direction recognition effect and prevent slow-witted effect.

In another specific embodiment, the surface of the first plate portion 41 opposite to the end plate 2 and the surface of the second plate portion 42 opposite to the second side are provided with an adhesive body 44, and the adhesive body 44 may be foam, back glue, or the like. Thus, the single side of the flexible collecting plate 4 is provided with the adhesive body 44 which is adhered to the designed position, so that the front and back sides of the flexible collecting plate 4 can be effectively distinguished, and the foolproof effect and the direction recognition effect of the flexible collecting plate are improved.

Alternatively, the connector sub-head may be provided as a connector female head 5 for plugging with a connector male head 6 provided on the line bank.

In addition, the battery module in the embodiment of the application further includes a protection plate 8, where the battery cell modules 1 are arranged side by side, the second plate portion 42 is electrically connected with at least the tab holders 7 on the second sides of the two battery cell modules 1, and the protection plate 8 is covered and connected on the second plate portion 42, or the protection plate 8 is located at the outermost side and covers the second sides of all the battery cell modules 1. By the arrangement, the plurality of single battery cell modules 1 are integrated to form a stable integral battery module, so that the follow-up assembly operation of the battery box is facilitated.

In a preferred embodiment, the second plate portion 42 is provided with a buffer portion 45 formed along the arrangement direction of the cell modules 1, and the buffer portion 45 is disposed opposite to the connection portion of two adjacent cell modules 1; alternatively, the buffer portion 45 may have a convex shape or a wavy shape.

So set up, when battery module's operational environment has vibration, probably produce relative displacement because of the vibration between the adjacent battery module 1, and the displacement between the adjacent battery module 1 can be absorbed to buffer part 45, plays the cushioning effect, prevents that flexible collection board 4 from tearing, effectively protects the sampling function of sampling assembly structure.

Based on the battery module, the embodiment of the application also provides a battery pack, which comprises a box body and the battery module, wherein the battery module is arranged in the box body. The battery pack has the above battery module, so the beneficial effects of the battery pack brought by the battery module are shown in the above description, and are not repeated here.

The basic principles of the present application have been described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be construed as necessarily possessed by the various embodiments of the application. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the application is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present application are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.

It is also noted that in the apparatus, devices and methods of the present application, the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are used for more clearly describing the technical solutions, and are not intended to limit the scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.

Claims (10)

1. A battery module, comprising:

the battery cell module (1) comprises a plurality of battery cells which are arranged side by side;

an end plate (2) fixedly connected to the first side surface of the battery cell module (1);

The fixed seat (3) is arranged on the end plate (2);

The flexible acquisition board (4) comprises a first board part (41) and a second board part (42) which is integrally connected with the first board part (41) in a bending way;

The first plate part (41) is located on the end plate (2) and connected with the fixing seat (3), and the second plate part (42) is located on the second side surface of the cell module (1) and electrically connected with the cell module (1).

2. The battery module according to claim 1, further comprising a connector tab provided on the first plate portion (41);

The fixing seat (3) is provided with a slot (31) which faces the opening of the connector sub-head, a fixing part (32) is arranged in the slot (31), and the connector sub-head is inserted in the slot (31) and connected with the fixing part (32).

3. The battery module according to claim 2, wherein the fixing seat (3) is provided with a through-hole (33) in a length direction of the first plate portion (41), the first plate portion (41) passing through the through-hole (33).

4. The battery module according to claim 1, wherein a tab support (7) is provided on the second side, the tab of the battery cell module (1) is fixed on the tab support (7), and the second plate portion (42) is attached to the tab support (7) and connected with the tab sampling.

5. The battery module according to claim 4, wherein one of the tab holder (7) and the second plate portion (42) is provided with a positioning hole (43), and the other is provided with a positioning post inserted into the positioning hole (43).

6. The battery module according to claim 1, wherein an adhesive body (44) is provided on both the surface of the first plate portion (41) that faces the end plate (2) and the surface of the second plate portion (42) that faces the second side surface.

7. The battery module according to claim 2, wherein the connector sub-head is a connector female head (5).

8. The battery module according to claim 1, further comprising a protection plate (8), wherein a plurality of battery modules (1) are arranged side by side, wherein the second plate portion (42) is electrically connected to at least the second side surfaces of two battery modules (1), and wherein the protection plate (8) covers and is connected to the second plate portion (42).

9. The battery module according to claim 8, wherein a buffer portion (45) formed along the arrangement direction of the cells is provided on the second plate portion (42), and the buffer portion (45) is disposed opposite to the junction of two adjacent cells.

10. A battery pack comprising a case and the battery module according to any one of claims 1 to 9, the battery module being mounted in the case.