CN218896751U

CN218896751U - Battery module and battery pack

Info

Publication number: CN218896751U
Application number: CN202223363347.1U
Authority: CN
Inventors: 曲凡多; 赵亮; 陈荣康
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-04-21
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a battery module and a battery pack, wherein the battery module comprises: the module body is provided with a plurality of battery cells which are arranged side by side; module fixed knot constructs, and module fixed knot constructs and is used for fixed module body, and module fixed knot constructs and includes: the fixing plate is integrated with an electric signal transmission device, and the electric signal transmission device is provided with a connecting end protruding out of the surface of the fixing plate. From this, through setting up module fixed knot structure, module fixed knot constructs can fix the module body, also can be used for information acquisition, is favorable to promoting the battery package space utilization.

Description

Battery module and battery pack

Technical Field

The present utility model relates to a battery module, and more particularly to a battery module and a battery pack having the same.

Background

In the related art, in the existing battery system, a sampling signal between battery modules is generally transmitted through a harness connection, and thus a space for arranging the harness needs to be reserved. And, in current battery system, when the battery module is installed in the casing of battery, need adopt the mounting to fix the battery module, the mounting only plays fixed battery module effect, and the mounting does not gather the signal effect, is used for the pencil of sampling to arrange alone between mounting and the battery module, and the structure is complicated, is unfavorable for the space utilization in the battery package.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery module, in which the module fixing structure can fix the module body, and can also be used for information collection, which is beneficial to improving the space utilization rate in the battery pack.

The utility model further provides a battery pack.

The battery pack according to the present utility model includes: the module body is provided with a plurality of battery cells which are arranged side by side;

the module fixed knot constructs, module fixed knot constructs and is used for fixing the module body, module fixed knot constructs and includes: and the fixing plate is integrated with an electric signal transmission device, and the electric signal transmission device is provided with a connecting end protruding out of the surface of the fixing plate.

According to the battery pack, the module fixing structure is arranged, so that the module body can be fixed by the module fixing structure, and the battery pack can also be used for information acquisition, thereby being beneficial to improving the space utilization rate in the battery pack.

In some examples of the utility model, the fixing plate extends to both ends of the module body in a longitudinal direction of the module body.

In some examples of the utility model, the fixing plate integrated with the electric signal transmission device is configured as a hard circuit board.

In some examples of the present utility model, the fixing plate is fixed to an upper surface or a lower surface or a side surface of the module body.

In some examples of the utility model, the electrical signal transmission device is configured as a flexible circuit board, the fixed plate is configured as a hard plate, and the electrical signal transmission device is embedded in the fixed plate or disposed on a surface of the fixed plate.

In some examples of the present utility model, the connection end of the electrical signal transmission device includes connectors respectively located at both longitudinal ends of the module body.

In some examples of the present utility model, the connection end of the electrical signal transmission device further includes: and the flexible structure is used for flexibly connecting the connector with the fixing plate.

In some examples of the present utility model, the fixing plate is provided with a relief hole corresponding to the explosion-proof valve of the battery cell.

In some examples of the utility model, the electrical signal transmission device has a safety unit; the fixed plate is also integrated with a temperature acquisition structure.

According to the battery pack of the utility model, the battery pack comprises the battery module.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery module according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a module body according to an embodiment of the utility model;

FIG. 3 is a perspective view of a module fixing structure according to a first embodiment of the present utility model;

FIG. 4 is a perspective view of a module fixing structure according to a second embodiment of the present utility model;

fig. 5 is a sectional view of a battery pack according to an embodiment of the present utility model;

fig. 6 is an enlarged view at a in fig. 5.

Reference numerals:

a battery module 100;

a module body 1; a battery cell 10; an explosion-proof valve 101;

a module fixing structure 2; a connection end 201; a connector 202; a flexible structure 203;

a insurance unit 204; a fixing plate 21; a relief hole 210; a temperature acquisition structure 211;

a battery pack 200; and a case 3.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The battery module 100 according to the embodiment of the present utility model is described below with reference to fig. 1 to 6, and the battery module 100 may be applied to the battery pack 200, but the present utility model is not limited thereto, and the battery module 100 may be applied to other devices where the battery module 100 needs to be disposed, and the application of the battery module 100 to the battery pack 200 will be described.

As shown in fig. 1, a battery module 100 according to an embodiment of the present utility model includes a module body 1 and a module fixing structure 2. As shown in fig. 2, the module body 1 has a plurality of battery cells 10 arranged side by side, and the number of the battery cells 10 in the module body 1 may be; the number of the battery cells 10 provided in the module body 1 is not particularly limited, and the number of the battery cells 10 may be particularly limited according to the battery module 100. The module fixing structure 2 is used for fixing the module body 1, as shown in fig. 1, when the battery module 100 is placed in the direction shown in fig. 1, in the thickness direction of the battery module 100 (i.e., the Z direction shown in fig. 1), the module body 1 is disposed on the upper surface of the module fixing structure 2, and the plurality of battery cells 10 of the module body 1 are fixedly connected with the module fixing structure 2, so that the relative positions of the module body 1 and the module fixing structure 2 are limited, the effect that the module fixing structure 2 fixes the module body 1 is realized, and the structural stability of the module body 1 is improved.

Further, the surface of the module fixing structure 2 may have a protection layer, for example, a fireproof coating or an anti-corrosion coating is sprayed on the surface of the module fixing structure 2, so that the protection layer can protect the module fixing structure 2, reduce the risk of damaging the module fixing structure 2, ensure the service stability of the module fixing structure 2, and be beneficial to prolonging the service life of the module fixing structure 2.

As shown in fig. 3, the module fixing structure 2 includes: the fixing plate 21 integrated with the electric signal transmission device may be integrated inside the fixing plate 21, and the present application describes the case where the electric signal transmission device is integrated inside the fixing plate 21, so the reference is not made in the drawings. The electrical signal transmission means has a connection end 201 protruding from the surface of the fixing plate 21. The electric signal transmission device has the function of transmitting electric signals, and when the module body 1 is fixedly arranged on the module fixing structure 2, the battery cell 10 is connected with the electric signal transmission device, so that the effect of electric signal transmission between the module body 1 and the module fixing structure 2 is realized.

The connection end 201 is suitable for being connected with other components of the battery pack 200 (such as a signal acquisition unit of the battery pack 200, a battery management system unit of the battery pack 200, a low-voltage external plug-in unit of the battery pack 200 and the like), so that the electric signal transmission device has the connection end 201, the effect of connecting the module body 1 with other components of the battery pack 200 is achieved through the connection end 201, the effect of electric signal transmission between the module body 1 and other components is achieved, the effect of acquiring related signals of the module body 1 by the signal acquisition unit is achieved, and the effects of monitoring, managing and the like of the module body 1 by the battery management system unit are achieved. And, module fixed knot constructs 2 can fix module body 1, also can be used for information acquisition, simultaneously, can simplify battery package 200 inner structure, is favorable to promoting battery package 200 inner space utilization.

From this, through setting up module fixed knot constructs 2 to make module fixed knot construct 2 can fix module body 1, module fixed knot constructs 2, is favorable to improving the structural stability of module body 1. Meanwhile, the electric signal transmission device is integrated on the fixing plate 21, so that an effect of electric signal transmission between the module body 1 and the module fixing structure 2 is achieved. The electric signal transmission device has a connection end 201, and the connection end 201 achieves the effect of connecting the module body 1 with other components of the battery pack 200, and achieves the effect of electric signal transmission between the module body 1 and the other components.

In some embodiments of the present utility model, as shown in fig. 1, the fixing plates 21 extend to both ends of the module body 1 in the longitudinal direction of the module body 1. Further, as shown in fig. 1, when the battery module 100 is placed in the direction of fig. 1, the longitudinal direction of the battery module 100 is the X direction shown in fig. 1, and the longitudinal direction of the module body 1 coincides with the longitudinal direction of the battery module 100. The length dimension (i.e., the length dimension in the X direction in fig. 1) of the fixing plate 21 is greater than or equal to the length dimension (i.e., the length dimension in the X direction in fig. 1) of the module body 1, so that when the fixing plate 21 is installed on the module fixing structure 2 along the longitudinal direction of the module body 1 and up to the two ends of the module body 1, the plurality of battery cells 10 of the module body 1 are ensured to be fixedly connected with the module fixing structure 2, the effect that the module fixing structure 2 fixes the module body 1 is realized, and the structural stability of the module body 1 is improved.

In some embodiments of the present utility model, as shown in fig. 3, the fixing plate 21 integrated with the electric signal transmission device is constructed as a hard circuit board. Further, the hard circuit board may be a PCB hard circuit board, and the fixing board 21 is configured as a hard circuit board, so as to ensure structural strength of the module fixing structure 2, reduce risk of deformation of the module fixing structure 2, and ensure that the module body 1 is reliably mounted and fixed on the module fixing structure 2.

In some embodiments of the present utility model, as shown in fig. 1, the fixing plate 21 is fixed on the upper surface or the lower surface or the side surface of the module body 1, that is, the fixing plate 21 may be fixed on any surface of the module body 1, so as to achieve the effect of fixedly connecting the module body 1 and the fixing plate 21, which is beneficial to improving the structural stability of the module body 1. Further, as shown in fig. 1, when the battery module 100 is placed in the direction shown in fig. 1, in the thickness direction of the battery module 100, the module body 1 is disposed on the upper surface of the fixing plate 21, so as to limit the relative position between the module body 1 and the fixing plate 21, and further achieve the effect of fixedly connecting the module body 1 with the module fixing structure 2.

In some embodiments of the present utility model, as shown in fig. 3, the electrical signal transmission device may be a soft circuit board, the fixing plate 21 may be a hard plate, the hard plate has a high structural strength, the electrical signal transmission device is embedded into the fixing plate 21 or is disposed on the surface of the fixing plate 21, and the fixing plate 21 protects the structural stability of the electrical signal transmission device due to the high structural strength of the fixing plate 21, so that the risk of deformation of the electrical signal transmission device under the action of external force is reduced, and the stability of the electrical signal transmission device in use is ensured.

Further, the soft circuit board has an insulating effect, and the electric signal transmission device is embedded into the fixing plate 21 or arranged on the surface of the fixing plate 21, so that the module fixing structure 2 has an insulating effect. When the battery module 100 is fixedly assembled to the case 3 of the battery pack 200, the module fixing structure 2 is interposed between the module body 1 and the case 3 of the battery pack 200, thereby ensuring insulation between the battery module 100 and the case 3 of the battery pack 200 and further ensuring use safety of the battery pack 200.

In some embodiments of the present utility model, as shown in fig. 3, the connection end 201 of the electrical signal transmission device may include connectors 202, and the connectors 202 are respectively located at two longitudinal ends of the module body 1. Further, as shown in fig. 3, in the length direction of the module fixing structure 2 (i.e., the X direction shown in fig. 3), the connectors 202 may be disposed at both ends of the module body 1, so as to avoid interference between the module body 1 and the connectors 202. Specifically, when the module body 1 is fixedly mounted on the module fixing structure 2, the module body 1 is suitable for being connected with an electrical signal transmission device, and the connectors 202 can be arranged at two ends of the module body 1, so that the interference of the module body 1 is avoided, and the module body 1 is convenient to assemble on the module fixing structure 2.

Further, the connector 202 is used for connecting the battery module 100 with other components of the battery pack 200, the connector 202 may be a port or an interface, the port is adapted to be in plug-in fit with the interface, and the port is electrically connected with the interface, so that an effect of transmitting an electrical signal can be achieved through plug-in fit between the port and the interface. Further, when the connector 202 is one of the port and the interface, the other components of the battery pack 200 have the other of the port and the interface, and the effect of transmitting the electrical signals between the connector 202 and the other components of the battery pack 200 is achieved through the plug-in fit between the port and the interface.

In some embodiments of the present utility model, as shown in fig. 4, the connection terminal 201 of the electrical signal transmission device may further include: a flexible structure 203. The flexible structure 203 is used to flexibly connect the connector 202 to the mounting plate 21. Further, the flexible structure 203 may be a wire harness, one end of the flexible structure 203 is connected with the fixing plate 21, the other end of the flexible structure 203 is connected with the connector 202, and by arranging the flexible structure 203, the connection end 201 is prevented from being directly and fixedly mounted on the fixing plate 21, and the connection end 201 can move relative to the fixing plate 21, so that the connection end 201 is convenient to be connected with other components of the battery pack 200.

It should be noted that the module fixing structure 2 according to the first embodiment of the present utility model is different from the module fixing structure 2 according to the second embodiment in the structural form of the connection terminal 201. Specifically, as shown in fig. 3, in the module fixing structure 2 of the first embodiment, the connector 202 is directly fixedly fitted to the fixing plate 21. As shown in fig. 4, in the module fixing structure 2 of the second embodiment, the connector 202 is fixedly connected to the fixing plate 21 through the flexible structure 203.

In some embodiments of the present utility model, as shown in fig. 3 and 4, the fixing plate 21 is provided with a relief hole 210 corresponding to the explosion-proof valve 101 of the battery cell 10. Further, the end face of the battery cell 10 may be provided with an explosion-proof valve 101, and when the module body 1 is fixedly mounted on the module fixing structure 2, one side end face of the battery cell 10 provided with the explosion-proof valve 101 is correspondingly arranged with the fixing plate 21, so that when the module body 1 is fixedly mounted on the module fixing structure 2, the explosion-proof valve 101 corresponds to the avoiding hole 210. The size of the avoidance hole 210 is greater than or equal to the size of the explosion-proof valve 101, so that the explosion-proof valve 101 is shielded by the fixing plate 21, normal use of the explosion-proof valve 101 is ensured, and safety of the battery module 100 is ensured.

Further, the number of the avoidance holes 210 may be multiple, the plurality of avoidance holes 210 are arranged at intervals, and the plurality of avoidance holes 210 are in one-to-one correspondence with the explosion-proof valves 101 of the plurality of battery cells 10, so that the explosion-proof valves 101 of the plurality of battery cells 10 can be ensured to be used normally, and the safety of the battery module 100 is ensured.

In some embodiments of the present utility model, as shown in fig. 3 and 4, the electrical signal transmission device may have a safety unit 204, further, the electrical signal transmission device has a plurality of conductive circuits therein, the safety unit 204 may be disposed in any one of the conductive circuits, and when the conductive circuits are abnormally connected in a short circuit, the conductive circuits may be cut off by the safety unit 204, thereby protecting the electrical signal transmission device and further improving the safety of the battery module 100.

As shown in fig. 3 and fig. 4, the fixing plate 21 may further be integrated with a temperature collecting structure 211, where the temperature collecting structure 211 may be connected with an electrical signal transmission device, so as to achieve an effect of electrical signal transmission between the electrical signal transmission device and the electrical signal transmission device, so that relevant data collected by the temperature collecting structure 211 may be transmitted to other devices through the electrical signal transmission device. Further, the temperature acquisition structure 211 is fixedly installed on the surface of the fixing plate 21 corresponding to the module body 1, when the module body 1 is installed on the module fixing structure 2, the temperature acquisition structure 211 is arranged between the fixing plate 21 and the module body 1, so that the temperature acquisition structure 211 can monitor and acquire the temperature of the battery cell 10, the effect of monitoring and acquiring the temperature of the battery cell 10 is achieved, and the use safety of the battery module 100 is ensured.

Further, the temperature collection structure 211 can be a plurality of, and a plurality of temperature collection structures 211 are arranged in the fixed plate 21 along the length direction interval of the battery module 100, and the plurality of temperature collection structures 211 are arranged, so that the monitoring collection range of the battery cell 10 is enlarged, the accuracy of monitoring collection is improved, and the use safety of the battery module 100 is further ensured.

According to the battery pack 200 of the embodiment of the present utility model, the battery pack 200 includes the battery module 100 of the above-described embodiment. As shown in fig. 5, the battery pack 200 may have a case 3, the battery pack 200 may have a plurality of battery modules 100, the plurality of battery modules 100 may be adapted to be fixedly mounted to the case 3 of the battery pack 200, and when the battery modules 100 are fixedly mounted to the case 3, a module fixing structure 2 is disposed between the module body 1 and the case 3 in a thickness direction (i.e., a Z direction shown in fig. 5) of the battery pack 200, and the module fixing structure 2 is adapted to be connected to the module fixing structure 2 and the case 3, thereby achieving an effect of fixedly mounting the battery modules 100 to the case 3. And, because the module fixed knot constructs 2 setting between module body 1 and box 3, direct heat conduction between module body 1 and the box 3 increases the thermal resistance between module body 1 and the box 3 through module fixed knot constructs 2 to be favorable to improving the safety in utilization of battery package 200.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module (100), characterized by comprising:

the battery module comprises a module body (1), wherein the module body (1) is provided with a plurality of battery cells (10) which are arranged side by side;

module fixed knot constructs (2), module fixed knot constructs (2) and is used for fixing module body (1), module fixed knot constructs (2) include: a fixing plate (21) integrated with an electrical signal transmission device having a connection end (201) protruding from a surface of the fixing plate (21).

2. The battery module (100) according to claim 1, wherein the fixing plates (21) extend to both ends of the module body (1) in the longitudinal direction of the module body (1).

3. The battery module (100) according to claim 1, wherein the fixing plate (21) integrated with an electric signal transmission device is configured as a hard circuit board.

4. A battery module (100) according to claim 3, wherein the fixing plate (21) is fixed to the upper or lower surface or side of the module body (1).

5. The battery module (100) according to claim 1, wherein the electric signal transmission device is configured as a soft circuit board, the fixing plate (21) is configured as a hard plate, and the electric signal transmission device is embedded in the fixing plate (21) or provided on a surface of the fixing plate (21).

6. The battery module (100) according to claim 1, wherein the connection terminals (201) of the electric signal transmission device include connectors (202), the connectors (202) being located at both longitudinal ends of the module body (1), respectively.

7. The battery module (100) according to claim 6, wherein the connection terminal (201) of the electric signal transmission device further comprises: -a flexible structure (203), said flexible structure (203) being adapted to flexibly connect said connector (202) to said fixing plate (21).

8. The battery module (100) according to claim 1, wherein the fixing plate (21) is provided with a vent hole (210) corresponding to the explosion-proof valve (101) of the battery cell (10).

9. The battery module (100) according to claim 1, wherein the electrical signal transmission device has a safety unit (204); the fixing plate (21) is also integrated with a temperature acquisition structure (211).

10. Battery pack (200) characterized by comprising a battery module (100) according to any one of claims 1-9.