CN218677310U

CN218677310U - Battery module

Info

Publication number: CN218677310U
Application number: CN202222703883.5U
Authority: CN
Inventors: 孙婉妹; 饶睦敏; 李明飞; 陈正鹏; 王标洪; 何志勇; 骆文波; 陈创庭
Original assignee: Guangdong Energy Group Science And Technology Research Institute Co ltd
Current assignee: Guangdong Energy Group Science And Technology Research Institute Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-03-21
Anticipated expiration: 2032-10-13

Abstract

The utility model relates to the technical field of batteries, and discloses a battery module, which comprises a plurality of battery core components, wherein each battery core component comprises a battery core bracket and a battery core arranged in the battery core bracket, each battery core is connected in series or in parallel, and heat-conducting plates are arranged on two sides of each battery core; each electric core support coincide in proper order sets up, all is provided with the heating panel between each two adjacent electric core supports, and the both sides surface of heating panel laminates with the heat-conducting plate respectively, and the both sides of electric core support all are provided with the recess, and the recess concatenation of two adjacent electric core supports forms logical groove, and the heating panel inlays the dress and is in lead to the inslot, the inside of heating panel sets up a plurality of ventiduces, and the extending direction of ventiduct is perpendicular with the coincide direction of electric core support, just the ventiduct runs through electric core support. The utility model discloses can distribute the heat of electric core outside the battery module evenly fast to improve the whole heat dispersion of battery module, avoid electric core to take place the thermal runaway, guarantee stability and the security that the battery module used.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

With the continuous expansion of new energy industries, the demand of various industries on lithium batteries is increasingly strengthened. The lithium ion battery has the characteristics of large capacity, good cycle performance and environmental protection, and is widely applied to various fields of medical treatment, communication, traffic, energy storage and the like.

At present, a square-shell battery module is a battery which is widely used in the industry. However, the heat dissipation performance of the conventional square-shell battery module is poor, and the electric core is easily out of control due to heat. The supports of the square-shell battery cell are generally made of high polymer materials, such as PC, PPO and the like, when the battery cell is out of thermal control, the temperature is as high as several hundred degrees, the high polymer materials can be softened and melted, the support and the protection of the battery cell are lost, the battery cell is conductive or electrified, and the battery cell or the electrified element can be contacted together, so that the problems of short circuit, breakdown and the like are caused, the fire and explosion risks are caused, and the potential safety hazard is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery module to the heat dispersion of solving current square shell battery module is relatively poor, easily leads to electric core to take place the problem of thermal runaway.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

battery module, include:

the battery cell assembly comprises a battery cell bracket and battery cells arranged in the battery cell bracket, the battery cells are connected in series or in parallel, and heat conducting plates are arranged on two sides of each battery cell;

each the electricity core support coincide in proper order sets up, each adjacent two all be provided with the heating panel between the electricity core support, the both sides surface of heating panel respectively with the heat-conducting plate laminating, the both sides of electricity core support all are provided with the recess, and the recess concatenation of two adjacent electricity core supports forms logical groove, the heating panel inlays the dress and is in lead to the inslot, the inside of heating panel sets up a plurality of ventiduces, the extending direction of ventiduct with the coincide direction of electricity core support is perpendicular, just the ventiduct runs through electricity core support.

Preferably, the battery cell support is made of ceramic.

Preferably, the heat-conducting plate is a heat-conducting silica gel plate.

Preferably, both ends of the heat dissipation plate are flush with the cell support.

Preferably, the heat dissipation plate is made of aluminum.

Preferably, the battery module further comprises a fixing screw, and the fixing screw sequentially penetrates through the bolt holes of the battery cell supports along the superposition direction of the battery cell supports.

Preferably, the battery module further comprises a connecting conductor, the connecting conductor is arranged on the top surface of each battery cell, and the battery cells are connected in series or in parallel through the connecting conductor.

Preferably, the battery module further comprises a first end plate and a second end plate, the first end plate and the second end plate are arranged at intervals, and the plurality of battery cell assemblies are stacked between the first end plate and the second end plate.

Preferably, a first insulating plate is arranged between the first end plate and the adjacent cell support, and a first insulating plate is arranged between the second end plate and the adjacent cell support.

Preferably, the battery module further includes a second insulating plate, the second insulating plate extends along the laminating direction of the cell support, and the second insulating plate covers a plurality of top surfaces of the cell assembly.

The embodiment of the utility model provides a battery module compares with prior art, and its beneficial effect lies in:

the utility model discloses battery module all sets up the heat-conducting plate in the both sides of electric core, all sets up the heating panel between two adjacent electric core supports, and the heat that electric core produced passes through the heat-conducting plate and conducts to the heating panel on, then evenly distributes the heat outside battery module fast through the inside ventiduct of heating panel and heating panel to improve battery module's whole heat dispersion, avoid electric core to take place the thermal runaway, guarantee stability and the security that battery module used.

Drawings

Fig. 1 is an assembly schematic diagram of a battery module according to an embodiment of the present invention;

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

fig. 3 is a schematic view of an air duct of the battery module according to the embodiment of the present invention;

in the figure, 1, a cell component; 11. a battery cell bracket; 111. a first sub-mount; 112. a second sub-mount; 1121. a groove; 12. an electric core; 13. a heat conducting plate; 2. a heat dissipation plate; 21. an air duct; 3. fixing the screw rod; 4. a connecting conductor; 5. a first end plate; 6. a first insulating plate; 7. a second insulating plate.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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 invention can be understood in specific cases to those skilled in the art.

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1-3, the present invention provides a battery module, which includes a plurality of cell assemblies 1, and the plurality of cell assemblies 1 are stacked in sequence to form the battery module. The structure of each electric core assembly 1 is the same. The battery core assembly 1 comprises a battery core bracket 11 and a battery core 12 installed in the battery core bracket 11, the battery core 12 is supported and protected by the battery core bracket 11, the battery cores 12 are connected in series or in parallel to form a battery module meeting voltage or capacity requirements, heat conducting plates 13 are arranged on two sides of the battery core 12, and heat of the battery core 12 is transferred outwards by the heat conducting plates 13; each electricity core support 11 superposes in proper order and sets up, each adjacent two all be provided with heating panel 2 between the electricity core support 11, the both sides surface of heating panel 2 respectively with heat-conducting plate 13 laminates, the both sides of electricity core support 11 all are provided with recess 1121, and the notch of recess 1121 sets up towards the outside of electricity core support 11, and the notch of recess 1121 of two adjacent electricity core supports 11 is relative, and the recess 1121 concatenation of two adjacent electricity core supports 11 forms logical groove, heating panel 2 inlays the dress and is in logical inslot, the inside of heating panel 2 sets up a plurality of ventiduses 21, and a plurality of ventiduses 21 parallel arrangement from top to bottom, the extending direction of ventiduct 21 with the coincide direction of electricity core support 11 is perpendicular, just ventiduct 21 runs through electricity core support 11. Preferably, both ends of the heat dissipation plate 2 are flush with the cell holders 11. For example, as shown in fig. 1, the cell holders 11 are stacked in the left-right direction, the air duct 21 extends in the front-rear direction, the two side surfaces of the heat dissipation plate 2 are the left side surface and the right side surface, and the two ends of the heat dissipation plate 2 are the front end and the rear end.

The utility model discloses all set up heat-conducting plate 13 in the both sides of electricity core 12, all set up heating panel 2 between two adjacent electric core supports 11, the heat that electricity core 12 produced passes through heat-conducting plate 13 and conducts to heating panel 2 on, then distribute the heat evenly fast outside the battery module through heating panel 2 and the inside ventiduct 21 of heating panel 2 to improve the whole heat dispersion of battery module, avoid electric core 12 to take place the thermal runaway, guarantee stability and the security that the battery module used.

Preferably, the battery cell support 11 is made of ceramic. Ceramic high temperature resistance is better, and ceramic support has high strength, high thermal conductivity and high thermal radiance, heat conduction, soaking that can be fine for electric core 12 moves in a balanced temperature environment, and, makes electric core support 11 can keep mechanical properties more than 300 degrees centigrade, avoids electric core support 11 to warp to melt under high temperature and causes electric core 12 short circuit or to be punctured.

As shown in fig. 2, in this embodiment, the cell support 11 includes a first sub-support 111 and a second sub-support 112, the first sub-support 111 and the second sub-support 112 are oppositely disposed, the first sub-support 111 and the second sub-support 112 are butted to form the cell support 11, and the first sub-support 111 and the second sub-support 112 have the same structural form. Taking the first sub-mount 111 as an example, the first sub-mount 111 includes a supporting bottom plate, a first supporting riser, a second supporting riser and a top plate, wherein the top plate is disposed above the supporting bottom plate in parallel and at an interval, the first supporting riser and the second supporting riser are disposed between the top plate and the supporting bottom plate in parallel and at an interval, the battery cell 12 is disposed on the supporting bottom plate, the first supporting riser and the second supporting riser are both provided with a groove 1121, and the front end and the rear end of the heat dissipation plate 2 are disposed in the groove 1121 of the first supporting riser and the groove 1121 of the second supporting riser respectively. The notches of the grooves 1121 of two adjacent first support risers are oppositely arranged, the two grooves 1121 are butted to form a strip-shaped through groove, and the front end of the heat dissipation plate 2 is placed in the strip-shaped through groove.

In the present embodiment, the heat conductive plate 13 is plate-shaped or sheet-shaped. Preferably, the heat conducting plate 13 is a heat conducting silica gel plate, and the heat conducting silica gel material has good heat conducting capability, and transfers heat generated by the battery cell 12 to the heat dissipation plate 2.

In this embodiment, the heat dissipation plate 2 is plate-shaped, the interior of the heat dissipation plate 2 is hollow, a plurality of partition plates are arranged in the heat dissipation plate 2 at intervals up and down, and the air duct 21 is formed between adjacent partition plates, so that the heat dissipation area is increased, and the heat dissipation rate is increased. Preferably, the heat dissipation plate 2 is made of aluminum. The heat dispersion of aluminium alloy is better, combines aluminium alloy and air duct 21's setting, strengthens the radiating effect.

As shown in fig. 2, in this embodiment, the cell support 11 is provided with bolt holes, the battery module further includes fixing screws 3, the fixing screws 3 sequentially penetrate through the bolt holes of the cell supports 11 along the stacking direction of the cell supports 11, so as to fix the cell assemblies 1 into a whole, thereby facilitating assembly, disassembly and maintenance. Specifically, the top and the bottom of first support riser, second support riser all are fixed with the gib block, and the bolt hole setting is in the gib block, and set screw 3 wears to establish in a plurality of gib blocks. In this embodiment, the number of the fixing screws 3 is four, and the four fixing screws 3 are arranged in a quadrilateral shape and respectively penetrate through the top two sides and the bottom two sides of the cell support 11.

As shown in fig. 2, in this embodiment, the battery module further includes a connecting conductor 4, the connecting conductor 4 is disposed on a top surface of each of the battery cells 12, and a plurality of the battery cells 12 are connected in series or in parallel through the connecting conductor 4. Preferably, the connection conductor 4 is an aluminum row.

In this embodiment, the battery module further includes a first end plate 5 and a second end plate, the first end plate 5 and the second end plate are arranged at an interval, the plurality of the electric core assemblies 1 are stacked between the first end plate 5 and the second end plate, and the electric core assemblies 1 are extruded together through the first end plate 5 and the second end plate, so as to improve the assembling tightness of the electric core assemblies 1; and, all be provided with the screw hole on first end plate and the second end plate, can lock to the bottom of battery box through the screw, guarantee that the installation of battery module is reliable fixed. Further, a first insulating plate 6 is disposed between the first end plate 5 and the adjacent cell support 11, and between the second end plate and the adjacent cell support 11. The first insulating plate 6 is used for increasing the insulating property between the battery cell 12 and the battery cell bracket 11, between the first end plate 5 and between the second end plate.

As shown in fig. 1 and fig. 2, in this embodiment, the battery module further includes a second insulating plate 7, where the second insulating plate 7 extends along the stacking direction of the cell holders 11, and the second insulating plate 7 covers top surfaces of the plurality of cell assemblies 1. The second insulating plate 7 is used for insulating and protecting the pole of the battery cell 12 and the connecting conductor 4.

To sum up, the utility model provides a battery module, it all sets up heat-conducting plate 13 in the both sides of electric core 12, all set up heating panel 2 between two adjacent electric core supports 11, the heat that electric core 12 produced passes through heat-conducting plate 13 and conducts to heating panel 2 on, then distribute the heat outside the battery module evenly fast through heating panel 2 and the inside ventiduct 21 of heating panel 2, thereby improve the whole heat dispersion of battery module, avoid electric core 12 to take place the thermal runaway, guarantee stability and the security that the battery module used.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A battery module, comprising:

2. The battery module of claim 1, wherein the cell support is made of ceramic.

3. The battery module according to claim 1, wherein the heat-conducting plate is a heat-conducting silicone plate.

4. The battery module of claim 1, wherein both ends of the heat dissipation plate are flush with the cell holders.

5. The battery module according to claim 1, wherein the heat dissipation plate is made of aluminum.

6. The battery module according to claim 1, wherein the cell supports are provided with bolt holes, and the battery module further comprises fixing screws, and the fixing screws sequentially penetrate through the bolt holes of the cell supports along the stacking direction of the cell supports.

7. The battery module according to claim 1, further comprising a connecting conductor disposed on a top surface of each of the battery cells, wherein the plurality of battery cells are connected in series or in parallel by the connecting conductor.

8. The battery module of claim 1, further comprising a first end plate and a second end plate spaced apart from each other, wherein the plurality of cell assemblies are stacked between the first end plate and the second end plate.

9. The battery module of claim 8, wherein a first insulating plate is disposed between the first end plate and the adjacent cell support, and a first insulating plate is disposed between the second end plate and the adjacent cell support.

10. The battery module according to claim 1, further comprising a second insulating plate extending along the stacking direction of the cell holders, wherein the second insulating plate covers top surfaces of the plurality of cell assemblies.