CN115411421A

CN115411421A - Battery module, battery package and consumer

Info

Publication number: CN115411421A
Application number: CN202211117373.8A
Authority: CN
Inventors: 王清泉; 黄红光; 杨威
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-11-29

Abstract

The application provides a battery module, battery package and consumer relates to power battery technical field. The battery module includes: a plurality of battery cells; the battery box body is provided with a containing cavity, and the containing cavity is configured to contain a plurality of battery cells; and at least part of the liquid cooling plate is arranged in the accommodating cavity, and the liquid cooling plate is positioned below the battery cell and used for supporting the battery cell. The battery box is provided with the chamber that holds that is used for holding electric core, the liquid cooling board is located the below of electric core, can with electric core direct contact, realize the heat dissipation to electric core, compare with prior art, need not install the power module according to the position of liquid cooling board, make to have and press the chapter flexibility, especially at the installation position that the installation space is irregular and lead to the battery module, under the limited prerequisite of installation operation, through setting up the liquid cooling board in holding the intracavity, can reduce the limited degree of installation of battery module in irregular space.

Description

Battery module, battery package and consumer

Technical Field

The application relates to the technical field of power batteries, in particular to a battery module, a battery pack and electric equipment.

Background

The lithium ion battery has the advantages of high energy density, high power density, more recycling times, long storage time and the like, so the lithium ion battery is widely used on portable electronic equipment such as mobile phones, digital cameras, portable computers and the like; and has wide application prospect in the aspects of electric vehicles such as electric automobiles and electric bicycles, large and medium-sized electric equipment such as energy storage facilities and the like.

In the related art, the conventional battery module is generally in a regular shape, and when the battery pack is assembled, the liquid cooling system is generally installed first, and then the battery module is installed, and the battery module and the liquid cooling system are separated from each other.

Disclosure of Invention

An object of this application is to provide a battery module, battery package and consumer, and the liquid cooling board is direct to be contacted with electric core group, can reduce the limited degree of installation of battery module in irregular space.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, the present application provides a battery module, including: a plurality of battery cells; a battery box body is arranged in the battery box body,

the battery pack comprises a containing cavity, a battery core and a battery cover, wherein the containing cavity is configured for containing a plurality of battery cores; and at least part of the liquid cooling plate is arranged in the accommodating cavity, and the liquid cooling plate is positioned below the battery cell and used for supporting the battery cell.

At the in-process of above-mentioned realization, the battery box is provided with the chamber that holds that is used for holding electric core, the liquid cooling board is located the below of electric core, can with electric core direct contact, the realization is to the heat dissipation of electric core, compared with the prior art, need not install the power module according to the position of liquid cooling board, make to have and press the chapter flexibility, especially at the installation position that the installation space is irregular and lead to the battery module, under the limited prerequisite of installation operation, through setting up the liquid cooling board in holding the intracavity, can reduce the limited degree of installation of battery module in irregular space.

In some embodiments, the battery box body comprises an upper cover plate, an end plate and a side plate, the upper cover plate, the end plate and the side plate are respectively connected to enclose and form the accommodating cavity, and the side plate is provided with a first hanging lug configured to be used for supporting the liquid cooling plate.

At the in-process of above-mentioned realization, the upper cover plate is connected respectively with end plate and curb plate, and the end plate is connected with the curb plate to enclosing to close and forming and holding the chamber, and the curb plate is close to the one side that holds the chamber and is provided with first hangers, can support and fix the liquid cooling board through first hangers, when guaranteeing that electric core sets up on the liquid cooling board, the liquid cooling board can directly carry out the heat transfer to electric core, improves the cooling effect.

In some embodiments, the lower end of the end plate is provided with an avoidance port configured as a structure for accommodating a portion of the liquid-cooled plate, and a height of the avoidance port in an up-down direction is not less than a thickness of the liquid-cooled plate in the up-down direction.

In the process of above-mentioned realization, the lower extreme of end plate is provided with and is used for dodging the mouth to the liquid cooling board, and will dodge the height of mouth and set to be not less than the thickness of liquid cooling board for the battery module is at the in-process that uses, can directly support through the end plate, avoids the liquid cooling board to receive the scraping on ground, causes the damage of liquid cooling board.

In some embodiments, one side of the side plate, which is far away from the first hanging lug, is provided with at least two second hanging lugs, and the two second hanging lugs are used for a fixing piece to penetrate through.

At the in-process of above-mentioned realization, be provided with two at least second hangers that distribute along upper and lower direction on the curb plate for the battery module assembles, when forming the battery package, can wear to establish the second hanger through the mounting, forms the fixed between the battery module, guarantees overall structure's stability.

In some embodiments, the battery module further comprises a support structure disposed between the two second hangers. Through setting up bearing structure between two hangers, at the in-process that the battery package assembled, bearing structure can be worn to locate by the mounting, can increase overall structure's steadiness, improves the installation intensity of battery module.

In some embodiments, the periphery of the liquid cooling plate is provided with a countersunk hole, and a countersunk bolt is adapted in the countersunk hole for fixedly connecting the liquid cooling plate with the first hanging lug.

In some embodiments, when the countersunk head bolt is connected in the countersunk head hole, the height of the upper end of the countersunk head bolt is lower than that of the upper end of the liquid cooling plate. Through highly setting the countersunk head bolt to the height that is less than the liquid cooling board upper end, can make the battery module at the in-process of equipment, avoid countersunk head bolt scratch electric core, arouse the risk of short circuit.

In some embodiments, the battery module further includes a heat insulation pad disposed between the upper cover plate and the battery cell.

In a second aspect, the present application further provides a battery pack, which includes the battery module as described in any one of the above, the battery module is provided with a plurality of, a plurality of the battery module is distributed along the upper and lower direction, and is penetrated through by the fixing member to fix the second pole ear of the battery module.

At the in-process of above-mentioned realization, the battery module is provided with a plurality of, and a plurality of battery module arranges along upper and lower direction, can carry out make full use of to the installation space of automobile body, improves space utilization to promote the continuation of the journey mileage of product.

In a third aspect, the present application further provides an electric device, including the battery pack as described above.

Because the electric device provided in the third aspect of the present application includes the battery pack in the technical solution of the second aspect, all technical effects of the above embodiments are achieved, and are not described herein again.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a battery module disclosed in an embodiment of the present application.

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

Fig. 3 is a schematic structural diagram of a battery module according to another view angle disclosed in the embodiment of the present application.

Fig. 4 is a plan view of an end plate of a battery module according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram illustrating the cooperation of end plates and side plates of a battery module according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a side plate of a battery module disclosed in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a side plate of a battery module according to another view angle disclosed in the embodiment of the present application.

Fig. 8 is a schematic view illustrating a partial structure of a battery module according to an embodiment of the present disclosure.

Reference numerals

100. A battery module; 101. an electric core; 102. a battery case; 1021. an end plate; 1022. a side plate; 1023. an upper end cover; 1024. a first suspension loop; 1025. a second suspension loop; 1026. a support structure; 1027. a fixing hole; 1028. a first mounting hole; 1029. a second mounting hole; 1030. reinforcing ribs; 103. an insulating plate; 104. heat-conducting structural adhesive; 105. a heat insulating pad; 106. a low-pressure base; 107. A high-pressure base; 108. a liquid-cooled plate; 1081. countersunk head bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships which are usually arranged when the product of the present invention is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or the element to be referred to must have a specific direction, be constructed in a specific direction and operate, and thus, cannot be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.

Examples

The conventional power battery module mainly comprises a side plate, an end plate, a CCS assembly, a battery cell group, a silica gel frame and the like; the liquid cooling system is installed at first when the battery pack is assembled, then the battery module is installed, the battery module and the liquid cooling system are separated, and the structure is generally applied to a conventional new energy vehicle and is suitable for installing the battery pack enveloping the comparative rules; however, for some special vehicles and overtaking electric vehicles, due to the space limitation, the envelope of the whole battery pack is irregular, so that the conventional battery module is not suitable for assembling the battery pack.

In view of this, as shown in fig. 1-2, in a first aspect, the present application provides a battery module 100, including: electric core 101, battery box 102 and liquid cooling plate 108, battery box 102 has one and holds the chamber, electric core 101 set up in hold the intracavity, at least partly structure of liquid cooling plate 108 is located hold the chamber, in order to be used for right electric core 101 supports, battery box 102 can be right liquid cooling plate 108 supports.

Specifically, a plurality of cells 101; a battery case 102 having a receiving cavity configured to receive a plurality of the battery cells 101; and a liquid cooling plate 108, at least a part of which is configured in the accommodating cavity, wherein the liquid cooling plate 108 is located below the battery cell 101, so as to support the battery cell 101.

For example, the number of the battery cells 101 is not particularly limited, and may be set according to an actual application, and in order to buffer the battery cells 101, a buffer pad may be disposed between two adjacent battery cells 101, where the buffer pad may be used to absorb a space when the battery cells 101 swell.

It can be understood that the battery module 100 further includes a heat conducting structural adhesive 104, where the heat conducting structural adhesive 104 is disposed between the liquid-cooled plate 108 and the battery core 101, so as to ensure that the battery core 101 and the liquid-cooled plate 108 are fixed and can also be used for conducting heat, and the size of the heat conducting structural adhesive 104 can be set to be not larger than the size of the liquid-cooled plate 108.

In the process of the above-mentioned realization, battery box 102 is provided with the chamber that holds that is used for holding electric core 101, liquid cooling plate 108 is located the below of electric core 101, can with electric core 101 direct contact, the realization is to electric core 101's heat dissipation, compared with the prior art, need not install the power module according to the position of liquid cooling plate 108, make to have and press the chapter flexibility, especially at the installation space irregular and lead to the mounted position of battery module 100, under the limited prerequisite of installation operation, through setting up liquid cooling plate 108 in holding the intracavity, can reduce the limited degree of installation of battery module 100 in irregular space.

As shown in fig. 2 to 5, the battery case 102 includes an upper cover plate, an end plate 1021, and a side plate 1022, where the upper cover plate, the end plate 1021, and the side plate 1022 are respectively connected to form the accommodating cavity, and the side plate 1022 is provided with a first hanging lug 1024, and the first hanging lug 1024 is configured to support the liquid cooling plate 108.

For example, the position where the end plate 1021 and the side plate 1022 are connected may be provided with an L-shaped shape, so that the end plate 1021 and the side plate 1022 can be conveniently attached, and the stability of the overall structure can also be improved, wherein the end plate 1021 and the side plate 1022 can be fixed by welding, for example, laser welding, and compared with a fixing method using bolts, the fixing method using bolts can reduce the use of parts, and at the same time, the end plate 1021 and the side plate 1022 are also conveniently fixed, and in order to ensure the insulation property of the battery case 102, an insulation plate 103 is provided between the end plate 1021 and the battery cell 101, and the insulation plate 103 has an insulation and thermal insulation function, and can transfer the heat of the battery cell 101 to the end plate 1021, and at the same time, can also prevent the electricity of the battery cell 101 from being transferred to the end plate 1021; an insulating layer may be disposed on the inner side of the side plate 1022, and the thickness of the insulating layer may be set to about 0.3mm to provide an adhesive force of 3MP or more, which may prevent the insulating layer from falling off from the side plate 1022.

It should be noted that the battery module 100 further includes a CCS assembly (Cells Contact System-harness isolation assembly), a high voltage base 107 and a low voltage base 106, wherein the CCS assembly is disposed between the electrical core 101 and the upper cover plate, the CCS assembly and the upper cover plate can be fixed by using a locking bolt, and the CCS assembly is electrically connected to the upper surface of the electrical core 101, specifically, the CCS assembly includes an FPC, a conductive bar (high voltage bar) and a low voltage terminal, the conductive bar is welded to the positive and negative electrodes of the electrical core 101, the output end of the conductive bar is mounted on the high voltage base 107, and the low voltage terminal is mounted on the low voltage base 106.

It can be understood that the end plate 1021 is formed by an aluminum profile through extrusion, the end plate 1021 is provided with a first mounting hole 1028 for mounting the high-voltage base 107 and a second mounting hole 1029 for mounting the low-voltage base 106, and the end plate 1021 is symmetrically arranged along a vertical center line, so that the two end plates 1021 can be shared when the end plate 1021 is arranged at both the left end and the right end of the battery box 102.

In the process of above-mentioned realization, the upper cover plate is connected respectively with end plate 1021 and curb plate 1022, and end plate 1021 is connected with curb plate 1022 to enclosing and closing the formation and holding the chamber, and curb plate 1022 is provided with first hangers 1024 near the one side that holds the chamber, can support and fix liquid-cooled plate 108 through first hangers 1024, when guaranteeing that electric core 101 sets up on liquid-cooled plate 108, liquid-cooled plate 108 can directly carry out the heat transfer to electric core 101, improves the cooling effect.

As shown in fig. 3, the lower end of the end plate 1021 is provided with an avoidance port configured as a structure for accommodating a part of the liquid-cooled plate 108, and the height of the avoidance port in the up-down direction is not less than the thickness of the liquid-cooled plate 108 in the up-down direction. Illustratively, the avoiding opening is provided in an opening shape, and the opening of the avoiding opening faces to a side far away from the upper end of the end plate 1021, so as to facilitate installation of the liquid cooling plate 108 and arrangement of the liquid cooling pipelines.

In the process of the above-mentioned realization, the lower extreme of end plate 1021 is provided with the mouth of dodging that is used for dodging liquid cooling plate 108, and will dodge the thickness that highly setting of mouth is to be not less than liquid cooling plate 108 for battery module 100 can directly support through end plate 1021 at the in-process that uses, avoids liquid cooling plate 108 to receive the scraping on ground, causes the damage of liquid cooling plate 108.

As shown in fig. 6-7, a second hanging lug 1025 is disposed on a side of the side plate 1022 far from the first hanging lug 1024, at least two second hanging lugs 1025 are disposed along the up-down direction, and the two second hanging lugs 1025 are used for a fastener to pass through. For example, the second hanging lug 1025 can be configured in a plate shape, and at least two fixing holes 1027 are provided on the second hanging lug 1025, the fixing holes 1027 are used for the fixing pieces to pass through, wherein the fixing pieces include, but are not limited to, bolts, so as to realize the fixed installation between the adjacent battery modules 100.

In the process of above-mentioned realization, be provided with two at least second hangers 1025 that distribute along upper and lower direction on curb plate 1022 for battery module 100 assembles, when forming the battery package, can wear to establish second hangers 1025 through the mounting, forms the fixed between the battery module 100, guarantees overall structure's stability.

In some embodiments, the battery module 100 further includes a support structure 1026, and the support structure 1026 is disposed between the two second hanging lugs 1025. Through setting up bearing structure 1026 between two hangers, at the in-process that the battery package assembled, bearing structure 1026 can be worn to locate by the mounting, can increase overall structure's steadiness, improves battery module 100's installation intensity.

For example, the supporting structure 1026 is square, or may be round, triangular, or prismatic, and the like, and no particular limitation is imposed on this, and the supporting structure 1026 and the second hanging lug 1025 can be fixed by welding or integrally forming, so that compared with a method of fixing by screws, the use of parts can be reduced, and the stability and the installation convenience of the whole structure can also be ensured; of course, in order to improve the stability of the battery box body 102, a reinforcing rib 1030 may be disposed on one side of the side plate 1022 close to the second hanging lug 1025, the reinforcing rib 1030 may be disposed in a triangular shape or the like, and the reinforcing rib 1030 and the side plate 1022 may be fixed by using an integral molding technique.

As shown in fig. 8, the periphery of the liquid cooling plate 108 is provided with a countersunk hole, and a countersunk bolt 1081 is fitted in the countersunk hole for fixedly connecting the liquid cooling plate 108 with the first hanging lug 1024.

In some embodiments, the countersunk bolt 1081, when attached within the countersunk hole, has an upper end that is at a lower height than an upper end of the liquid cooled plate 108. Through setting the height of countersunk head bolt 1081 to be less than the height of liquid cooling board 108 upper end, can make battery module 100 in the in-process of assembling, avoid countersunk head bolt 1081 scratch electric core 101, arouse the risk of short circuit.

In some embodiments, the battery module 100 further includes a heat insulation pad 105, and the heat insulation pad 105 is disposed between the upper cover plate and the battery cell 101. Illustratively, the heat insulation pad 105 can be one of aerogel and mica sheet, and the thickness of the heat insulation pad 105 is 0.1 mm-1.5 mm, mica sheet is preferred in this application scheme, and the thickness is 1.4mm.

In a second aspect, the present application further provides a battery pack, including the battery module 100 as described in any one of the above, the battery module 100 is provided with a plurality of, a plurality of the battery module 100 is distributed along the up-down direction, and wears to establish through the fixing member the second pole ear of the battery module 100 is fixed.

At the in-process of above-mentioned realization, battery module 100 is provided with a plurality of, and a plurality of battery module 100 arranges along upper and lower direction, can carry out make full use of to the installation space of automobile body, improves space utilization to promote the continuation of the journey mileage of product.

In a third aspect, the present application further provides an electric device, including the battery pack as described above. Illustratively, the electric equipment comprises special vehicles, overtaking and the like, and the battery pack can be used as an operation power supply of the electric equipment and also can be used as a driving power supply of the electric equipment to provide driving power for the vehicles instead of or partially replacing fuel oil or natural gas.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery module, comprising:

a plurality of battery cells;

the battery box body is provided with a containing cavity, and the containing cavity is configured to contain a plurality of battery cores;

and at least one part of the liquid cooling plate is arranged in the accommodating cavity, and the liquid cooling plate is positioned below the battery core and is used for supporting the battery core.

2. The battery module according to claim 1, wherein the battery box comprises an upper cover plate, an end plate and a side plate, the upper cover plate, the end plate and the side plate are respectively connected to form the accommodating cavity in an enclosing manner, and the side plate is provided with a first hanging lug configured to support the liquid cooling plate.

3. The battery module according to claim 2, wherein the lower end of the end plate is provided with an escape opening configured as a structure for accommodating a portion of the liquid-cooled plate, and a height of the escape opening in the up-down direction is not less than a thickness of the liquid-cooled plate in the up-down direction.

4. The battery module according to claim 2, wherein a second lug is arranged on one side of the side plate away from the first lug, at least two second lugs are arranged along the vertical direction, and the two second lugs are used for the fixing piece to penetrate through.

5. The battery module according to claim 4, further comprising a support structure disposed between the two second hangers.

6. The battery module according to claim 2, wherein the periphery of the liquid cooling plate is provided with a countersunk hole, and a countersunk bolt is fitted in the countersunk hole for fixedly connecting the liquid cooling plate with the first suspension lug.

7. The battery module according to claim 6, wherein the upper end of the countersunk head bolt is lower than the upper end of the liquid cooling plate when the countersunk head bolt is connected in the countersunk head hole.

8. The battery module according to claim 2, further comprising a thermal insulation pad disposed between the upper cover plate and the battery cell.

9. A battery pack, comprising the battery module according to any one of claims 1 to 8, wherein the battery module is provided with a plurality of battery modules, the plurality of battery modules are distributed in the vertical direction, and are fixed by a fixing member penetrating through the second tab of the battery module.

10. An electric device comprising the battery pack according to claim 9.