CN216213710U

CN216213710U - Battery module

Info

Publication number: CN216213710U
Application number: CN202023351962.1U
Authority: CN
Inventors: 梁先豫; 汤杰; 凌俊华; 何逸
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-04-05
Anticipated expiration: 2030-12-31

Abstract

A battery module comprises a shell and a battery accommodated in the shell, wherein a heating device used for providing heat energy for the battery is arranged in the shell. The heating device comprises a connecting wire, a connector and a plurality of heating pieces, the plurality of heating pieces are sequentially arranged along the extending direction of the connecting wire, each heating piece is electrically connected with the connecting wire, and the connector is arranged on one heating piece. The plurality of heating sheets are electrically connected with the same connecting wire, and each heating sheet does not need to be separately butted with an external bus, so that the number of cables inside the battery module is reduced, a part for fixing the cables is omitted, and the utilization rate of the internal space of the battery module is improved; the plurality of heating plates are connected in parallel or in series through the connecting wires, and only a single connector is required to be arranged to be in butt joint with the external bus, so that the assembly process of the battery module is simplified.

Description

Battery module

Technical Field

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

Background

The optimum working temperature of the battery is 10-25 ℃, the service life of the battery is reduced due to the excessively high or low working temperature, the charging and discharging efficiency of the battery is influenced, and the environmental temperature can reach below 0 ℃ in winter, particularly in the north, so that a heating device is required to be arranged in the battery module to ensure the working temperature of the battery in order to ensure the normal operation of the battery.

The battery heating device comprises a plurality of heating sheets which are used for being in contact with the battery and providing heat for the battery, each heating sheet is provided with a lead and a connector for being connected with a power supply, however, the current heating film group has the following problems:

1. a special fixing part is required to be arranged in the battery module for fixing the lead, so that the internal space of the battery module is occupied;

2. the number of cables in the battery module is large, the conducting wires of the heating sheets are interwoven with the cables in the power battery, each connector needs to be in butt joint with the heating circuit, and assembly is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a battery module, which optimizes the structure of an internal heating device, improves the utilization rate of the internal space of the battery module, reduces the branches of a heating circuit and reduces the assembly difficulty of the battery module.

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

a battery module comprises a shell and a battery accommodated in the shell, wherein a heating device used for providing heat energy for the battery is arranged in the shell;

the heating device comprises a connecting wire, a connector and a plurality of heating pieces, the heating pieces are sequentially arranged along the extending direction of the connecting wire, each heating piece is electrically connected with the connecting wire, and the connector is arranged on one of the heating pieces.

In one embodiment, the heating plate is provided with a butting part on one side close to the connecting lead, and the butting part is electrically connected with the connecting lead.

In one embodiment, the heating sheets are parallel to each other.

In one embodiment, the housing includes two end plates and two side plates, the two side plates are disposed opposite to each other, the two end plates are located between the two side plates, and two ends of each end plate are respectively connected to the two side plates.

In one embodiment, bending parts are arranged at two ends of the side plate, a step matched with the bending parts is arranged on the edge of the end plate, and the bending parts are used for being buckled with the step.

In one embodiment, the end plate is provided with a wiring groove, the wiring groove extends from the first end of the end plate to the second end of the end plate, the connecting lead is accommodated in the wiring groove, one of the side plates is provided with a through hole, and the connector passes through the through hole and extends out of the shell.

In one embodiment, the through hole is positioned on one side of the side plate close to the wiring groove, and the through hole is communicated with the wiring groove.

In one embodiment, the connector is disposed adjacent to the through hole.

In one embodiment, the connector includes a lead having one end electrically connected to the heater chip and a tab on the other end of the lead.

In one embodiment, two barbs are arranged on each heating plate close to the side plate, the two barbs are arranged oppositely, and the two barbs are buckled on the side plate adjacent to the heating plate.

Compared with the prior art, the utility model has at least the following advantages:

1. the plurality of heating sheets are electrically connected with the same connecting wire, and each heating sheet does not need to be separately butted with an external bus, so that the number of cables inside the battery module is reduced, a part for fixing the cables is omitted, and the utilization rate of the internal space of the battery module is improved;

2. the plurality of heating plates are connected in parallel or in series through the connecting wires, and only a single connector is required to be arranged to be in butt joint with the external bus, so that the assembly process of the battery module is simplified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a battery module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery module according to an embodiment of the utility model;

FIG. 3 is a schematic structural diagram of a heating device according to an embodiment of the present invention;

fig. 4 is a front view of a battery module according to an embodiment of the present invention;

FIG. 5 is an enlarged view of FIG. 2 at A;

fig. 6 is an exploded view of a battery module according to another embodiment of the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

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 invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a battery module 10 includes a housing 100 and a battery 200 accommodated in the housing 100, and a heating device 300 for providing heat energy to the battery 200 is disposed in the housing 100. The heating device 300 is in contact with the outer wall of the battery 200 to heat the battery 200, and the structure of the heating device 300 is optimized, so that cables inside the shell 100 are reduced, the utilization rate of the inner space of the shell 100 is improved, and the assembly process of the battery module 10 is simplified.

Referring to fig. 2 and 3, the heating device 300 includes a connecting wire 310, a connector 320, and a plurality of heating sheets 330, the plurality of heating sheets 330 are sequentially disposed along an extending direction of the connecting wire 310, each heating sheet 330 is electrically connected to the connecting wire 310, and the connector 320 is disposed on one of the heating sheets 330.

The heating sheet 330 contacts the battery 200 and provides heat to the battery 200 when the heating sheet 330 is activated, thereby preheating the battery 200, regulating and controlling the operating temperature of the battery 200, ensuring that the battery 200 operates in an optimal state, and improving the service life of the battery module 10.

In this embodiment, the plurality of heating fins 330 are all electrically connected to the connecting wires 310, and according to the actual control requirement, the plurality of heating fins 330 may be electrically connected in series or in parallel; thus, the plurality of heating sheets 330 are integrated together, a heating loop is formed in the housing 100, and the heating loop does not need to be separately butted with an external bus, so that the number of cables in the housing 100 is reduced, the number of parts for fixing the cables is reduced while the number of the cables is reduced, the wiring workload in the process of assembling the battery module 10 is reduced, and the improvement of the assembling efficiency of the battery module 10 is facilitated.

After the plurality of heating fins 330 are connected to the connection wires 310, they are electrically connected to the external bus through the connector 320, and are electrically connected to the circuit board controlling heating through the external bus, so that it is not necessary to butt-joint the respective heating fins 330 to the circuit board, the number of the connectors 320 is reduced, and the assembly efficiency of the battery module 10 is further simplified.

Referring to fig. 2 and fig. 3, it should be noted that the battery 200 is composed of a plurality of single battery cells 210, the plurality of single battery cells 210 are distributed in the casing 100 in a rectangular array, that is, the plurality of single battery cells 210 are arranged in a plurality of rows and a plurality of columns in the casing 100, and the heating plate 330 contacts with the outer wall of the single battery cells 210 to heat the single battery cells;

the heating sheet 330 may be attached to the bottom surface of the cell 210, the top surface of the cell 220, the side surface of the short side of the cell 210, or the side surface of the long side of the cell 220.

For example, a reserved interval 11 is provided between adjacent unit cells 210 or between the unit cells 210 and the casing 100, where the reserved interval 11 is a position where the heating plate 330 is provided.

As shown in fig. 1, the heating sheet 330 is disposed in the reserved interval 11 between two adjacent rows of the monomer electric cores 210, and the heating sheet 330 is attached to the outer wall of each monomer electric core 210 in the two adjacent rows; the heating sheets 330 may also be disposed in the reserved interval 11 between two adjacent columns of the unit cells 210.

Referring to fig. 1 and 6, the connecting wires 310 may be disposed along a horizontal transverse direction (i.e., the direction indicated by the X-axis) or along a horizontal longitudinal direction (i.e., the direction indicated by the Y-axis).

As shown in fig. 1, when the connecting wire 310 is arranged along the direction indicated by the X-axis, the plurality of heating plates 330 are sequentially arranged along the extending direction of the connecting wire 310, that is, the plurality of heating plates 330 are arranged along the horizontal direction at intervals and distributed in the reserved interval 11 between two adjacent rows of monomer electric cores 210, and at this time, the heating plates 330 are attached to the side surfaces of the short sides of the monomer electric cores;

meanwhile, when the connecting wires 310 are arranged along the direction indicated by the X-axis, a single heating plate 330 may be attached to the top or bottom of the plurality of unit cells 210 in the same row to supply heat.

As shown in fig. 6, when the connecting wire 310 is arranged along the direction indicated by the Y-axis, the plurality of heating plates 330 are sequentially arranged along the extending direction of the connecting wire 310, that is, the plurality of heating plates 330 are arranged along the horizontal longitudinal direction at intervals and are distributed in the reserved interval 11 between two adjacent columns of the single battery cells 210; at this time, the heating plate 330 is attached to the side surface where the long side of the single battery cell is located;

when the connecting wires 310 are arranged along the direction indicated by the X-axis, a single heating plate 330 may be attached to the top or the bottom of the plurality of unit cells 210 in the same row to supply heat.

In one embodiment, the plurality of heating strips 330 are parallel to each other, and the abutting portion 331 is disposed on one side of the heating strips 330 close to the connecting wires 310, and the abutting portion 331 is electrically connected to the connecting wires 310.

Referring to fig. 1, in an embodiment, the housing 100 includes two end plates 110 and two side plates 120, the two side plates 120 are disposed opposite to each other, the two end plates 110 are disposed between the two side plates 120, and two ends of each end plate 110 are respectively connected to the two side plates 120.

For convenience of assembly, two ends of the side plate 120 are provided with bending portions 121, a step 111 matched with the bending portions 121 is arranged on the edge of the end plate 110, and the bending portions 121 are used for being buckled with the step 111.

Referring to fig. 1, in order to further improve the utilization rate of the internal space of the housing 100, the end plate 110 is provided with a wire slot 112, the wire slot 112 extends from a first end of the end plate 110 to a second end of the end plate 110, i.e., extends along the direction indicated by the X-axis, and the connecting wire 310 is accommodated in the wire slot 112. This allows the connecting leads 310 to be buried in the inner walls of the end plates 110, leaving more space for mounting the battery 200. One of the side plates 120 is formed with a through hole 122, and the connector 320 passes through the through hole 122 and extends to the outside of the housing 100.

In order to further improve the utilization of the internal space of the enclosure 100, the connector 320 is disposed adjacent to the through hole 122, the through hole 122 is located on one side of the side plate 120 close to the wiring channel 112, and the through hole 122 is communicated with the wiring channel 112. That is, the connector 320 is disposed on the heat patch 330 closest to the through-hole 122 so that the length of the connector 320 is minimized, and the internal structure of the battery module 10 is more compact. The connector 320 includes a lead 321 and a tab 322, one end of the lead 321 is electrically connected to the heating blade 330, the tab 322 is located on the other end of the lead 321, and the tab 322 is used for interfacing with an external bus.

Referring to fig. 4 and 5, in order to improve the structural stability of the battery module 10 and simplify the assembly process of the battery module 10, two barbs 332 are disposed on each of the heating sheets 330 adjacent to the side plates 120, the two barbs 332 are disposed opposite to each other, and the two barbs 332 are fastened to the side plates 120 adjacent to the heating sheets 330, so that additional fixing members are not required to fix the heating sheets 330 to the side plates 120.

1. the plurality of heating sheets 330 are electrically connected with the same connecting wire 310, and each heating sheet 330 does not need to be separately butted with an external bus, so that the number of cables inside the battery module is reduced, a part for fixing the cables is omitted, and the utilization rate of the internal space of the battery module is improved;

2. the plurality of heating sheets 330 are connected in parallel or in series through the connection wires 310, and only a single connector 320 needs to be provided to interface with an external bus, thereby simplifying the assembly process of the battery module.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A battery module comprises a shell and a battery accommodated in the shell, and is characterized in that a heating device used for providing heat energy for the battery is arranged in the shell;

2. The battery module according to claim 1, wherein the heating chip is provided with a butting part on a side thereof adjacent to the connection lead, the butting part being electrically connected to the connection lead.

3. The battery module according to claim 1, wherein the plurality of heating sheets are parallel to each other.

4. The battery module according to claim 1, wherein the housing comprises two end plates and two side plates, the two side plates are disposed opposite to each other, the two end plates are disposed between the two side plates, and two ends of each end plate are connected to the two side plates respectively.

5. The battery module according to claim 4, wherein bent portions are provided at both ends of the side plates, and a step matching the bent portions is provided on an edge of the end plate, and the bent portions are adapted to be engaged with the step.

6. The battery module of claim 4, wherein the end plates define a plurality of slots extending from the first end of the end plate to the second end of the end plate, the connecting wires being received in the slots, wherein one of the side plates defines a through hole, and the connector extends through the through hole and out of the housing.

7. The battery module according to claim 6, wherein the through-hole is located on a side of the side plate adjacent to the wiring groove, and the through-hole is in communication with the wiring groove.

8. The battery module according to claim 7, wherein the connector is disposed adjacent to the through-hole.

9. The battery module according to any one of claims 2 to 8, wherein the connector comprises a lead wire having one end electrically connected to the heating sheet and a tab on the other end of the lead wire.

10. The battery module according to any one of claims 4 to 8, wherein each of the heating sheets adjacent to the side plates is provided with two barbs, the two barbs are arranged opposite to each other, and the two barbs are buckled on the side plate adjacent to the heating sheet.