CN220585322U

CN220585322U - Thermal management component, battery and electricity utilization device

Info

Publication number: CN220585322U
Application number: CN202321969940.2U
Authority: CN
Inventors: 可庆朋; 魏杰; 李宏磊; 潘鑫
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-03-12
Anticipated expiration: 2033-07-25

Abstract

The application relates to a thermal management component, a battery and an electrical device. The utility model provides a thermal management part is used for the battery, and the battery includes the battery monomer, and thermal management part includes body and first bolster, and at least one side along the first direction of battery monomer is located to the body, and first bolster is located body towards adjacent battery monomer one side, and defines the heat dissipation passageway between first bolster, body and the adjacent battery monomer, and the heat dissipation passageway is used for holding heat transfer medium. The thermal management component can improve the safety of the battery from two aspects of heat dissipation management and expansion management, and widens the application range of the battery.

Description

Thermal management component, battery and electricity utilization device

Technical Field

The present application relates to the field of batteries, and in particular to a thermal management component, a battery, and an electrical device.

Background

With the development of new energy technology, batteries are increasingly widely used. For example, lithium batteries are used in electric vehicles to power the electric vehicles. However, the safety hazard of the conventional battery is high.

Disclosure of Invention

Based on this, it is necessary to provide a thermal management component, a battery and an electric device, aiming at the problem that the potential safety hazard of the conventional battery is high.

According to a first aspect of the present application, there is provided a thermal management component for a battery, the battery comprising a battery cell, the thermal management component comprising a body and a first buffer, the body being provided on at least one side of the battery cell in a first direction, the first buffer being provided on one side of the body facing an adjacent battery cell, and a heat dissipation channel being defined between the first buffer, the body and the adjacent battery cell, the heat dissipation channel being for accommodating a heat exchange medium.

In the technical scheme of the application, on one hand, cooling gas can be led into the heat dissipation channel, and can flow through the adjacent battery cells to exchange heat with the adjacent battery cells, so that heat generated in the use process of the battery cells can be taken away; on the other hand, when the battery monomer expands, the first buffer piece can absorb the expansion force generated by the expansion of the battery monomer, so that the first buffer piece can play a role in well buffering, can also provide expansion space for the adjacent battery monomer, and can well protect the battery monomer; therefore, the heat management component can not only radiate heat of the battery cell of the battery, but also provide expansion space and buffer protection for the battery cell, so that the heat management component can improve the safety of the battery in two aspects of heat radiation management and expansion management, and widens the application range of the battery.

In one embodiment, a side of the battery cell facing the thermal management member includes a first region, and a second region located at both sides of the first region in the second direction. The front projection of the first buffer piece on the adjacent battery cell is at least partially overlapped with the first area of the battery cell. The first direction is perpendicular to the second direction, and the second direction is parallel to one side of the battery cell facing the thermal management component. Therefore, when the battery monomer expands, compared with the second area of the battery monomer, the expansion degree of the first area of the battery monomer is larger, the first buffer piece can well absorb the expansion force generated by the expansion of the battery monomer, the first buffer piece can be utilized to play a role in well buffering, and an expansion space can be provided for the first area of the battery monomer, so that the battery monomer can be well protected.

In one embodiment, the first buffer member extends lengthwise along a third direction, and the second direction and the third direction intersect each other and are perpendicular to the first direction. By using the first buffer member extending along the third direction, the expansion space and buffer protection can be well provided for the adjacent battery cells, and the safety of the battery can be improved well.

In one embodiment, the first buffer member includes a first end portion and a second end portion disposed opposite to each other in the third direction, and a main body portion connected between the first end portion and the second end portion, and an orthographic projection of the main body portion on an adjacent battery cell is disposed overlapping the first region of the battery cell. At least one of the first end and the second end is projected on the adjacent battery cell and is staggered with the first area of the battery cell. Therefore, more parts of the first buffer piece can absorb expansion force generated by expansion of the battery cell, more expansion space can be provided for the battery cell, the protection effect of the thermal management component on the battery cell can be improved, and the possibility of expansion failure of the battery cell is reduced.

In one embodiment, in the second direction, a distance between the first buffer and the bottom of the body is greater than a preset value. The first direction is perpendicular to the second direction, and the second direction is parallel to one side of the battery cell facing the thermal management component. It can be understood that the first buffer member has a certain height in the second direction, so that the first buffer member is closer to the middle area of the battery cell in the second direction, and thus, the first buffer member can better absorb the expansion force generated by the expansion of the battery cell, so as to better provide expansion space and buffer protection for the adjacent battery cell, and further, the safety of the battery can be improved well.

In one embodiment, the dimension of the battery cell along the second direction is H, and the preset value is greater than or equal to 1/5H. Then, along the second direction, the first buffer member is closer to 1/2H of the battery cell, so that the first buffer member can have more contact with the first area of the battery cell to better absorb the expansion force generated by the expansion of the battery cell, and therefore, the first buffer member can provide expansion space and buffer protection for the adjacent battery cell well, and the safety of the battery can be improved.

In one embodiment, the preset value is greater than or equal to 1/3H. So set up, can make first bolster be close to the 1/2H department of battery monomer along the second direction for first bolster can have more contact battery monomer first regional department, in order to absorb the inflation power that battery monomer inflation produced better, so, this first bolster can provide expansion space and buffering protection for adjacent battery monomer better, can improve the security of battery.

In one embodiment, at least two first buffer members are disposed on a side of the body facing the adjacent battery cells, the at least two first buffer members are defined as a group of buffer assemblies, and a heat dissipation channel is disposed between the two adjacent first buffer members in the buffer assemblies. On the one hand, the heat dissipation channels between two adjacent first buffer pieces can be utilized to dissipate heat for the adjacent battery monomers; on the other hand, two first buffer parts can be utilized to better provide expansion space and buffer protection for adjacent battery cells, and the safety of the battery can be improved.

In one embodiment, a plane perpendicular to the second direction is defined as a first virtual plane, the dimension of the battery cell along the second direction is H, the height of the first virtual plane along the second direction is 1/2H, and at least two first buffer members in the buffer assembly are respectively located on two sides of the first virtual plane. The first direction is perpendicular to the second direction, and the second direction is parallel to one side of the battery cell facing the thermal management component. So set up, two at least first cushioning members in the buffer unit provide expansion space and buffering protection for two parts of battery monomer along the second direction respectively, can absorb the expansion force that battery monomer inflation produced better, and then can improve the security of battery.

In one embodiment, at least two first cushioning members of the cushioning assembly are symmetrically arranged with respect to a first virtual plane. Orthographic projections of at least two first buffer members in the buffer assembly on adjacent battery monomers can be approximately symmetrically distributed relative to the middle area of each battery monomer serving as a reference standard, so that the at least two first buffer members in the buffer assembly can uniformly absorb expansion force generated by expansion of each battery monomer, uniform expansion space and buffer protection are provided for the adjacent battery monomers, and the safety of a battery can be better improved.

In one embodiment, among the two first buffers located at opposite sides of the buffer assembly along the second direction, the distance between the sides of the two first buffers facing away from each other along the second direction is B, and the dimensions of the battery cells along the second direction are H, where B and H satisfy the following conditions: b is more than or equal to 1/5H and less than or equal to 4/5H. The first direction is perpendicular to the second direction, and the second direction is parallel to one side of the battery cell facing the thermal management component.

In one embodiment, 1/3 H.ltoreq.B.ltoreq.2/3H.

In one embodiment, the body comprises a base structure and a protruding structure, the protruding structure and the first buffer member are arranged on at least one side of the base structure along a first direction, the protruding structure is located on the outer side of the first buffer member along a second direction, the first direction is perpendicular to the second direction, and the second direction is parallel to one side of the battery cell, which faces the thermal management component. Therefore, as the protruding structure is positioned on the outer side of the first buffer piece along the second direction, the protruding structure is less likely to contact the first area of the battery cell, the influence of the protruding structure on the expanded battery cell can be reduced, and the protruding structure can provide hard support for the battery cell; and the first buffer piece which is positioned at the inner side of the convex structure along the second direction is used for providing expansion space and buffer protection for the battery cell, so that the safety of the battery can be improved well.

In one embodiment, the protruding structure includes a plurality of protruding ribs, the base structure, the plurality of protruding ribs and the first buffer member located on the same side of the base structure along the first direction, and the adjacent battery cells define a plurality of heat dissipation channels, and the plurality of heat dissipation channels are arranged at intervals along the second direction. The heat dissipation channels can be utilized to dissipate heat of the same adjacent battery monomer, so that the heat dissipation effect of the battery monomer is improved.

In one embodiment, the protrusion structure includes a plurality of ribs, and the plurality of ribs of the protrusion structure are located on opposite sides of all the first cushioning members along the second direction. Therefore, the protruding structure can be utilized to provide hard support for two opposite sides of the adjacent battery cells along the second direction, and the reliability of the battery can be improved.

In one embodiment, the protruding structure includes a plurality of protruding ribs, and a dimension of at least one protruding rib is larger than a dimension of the first buffer along the first direction. Due to being in the first direction F ₁ The size of at least one protruding muscle is greater than the size of first bolster, combines along the second direction, and protruding muscle is located the outside of first bolster, so, in first direction, this protruding muscle and first bolster form the difference in height, and then can provide more expansion space for the battery monomer, is favorable to improving the security of battery.

In one embodiment, the protrusion structure includes a plurality of ribs, and the plurality of ribs includes a first rib disposed at least one end of the base structure along the second direction, and a second rib disposed inside the first rib along the second direction. Along the first direction, the size of the first convex rib is larger than that of the second convex rib. Along the second direction, compare in the protruding muscle of second, the protruding muscle of first is farther from adjacent battery monomer's middle part region, then, the size of first protruding muscle along the first direction is greater than the size of second protruding muscle along the first direction for first protruding muscle and the protruding muscle of second form the difference in height in the first direction, and then can provide more expansion space for battery monomer, be favorable to improving the security of battery.

In one embodiment, the protruding structure includes two first protruding ribs, and the two first protruding ribs are respectively disposed at two opposite ends of the base structure along the second direction. The two first ribs which are symmetrically distributed can well provide uniform supporting force for adjacent battery cells, and the reliability of the battery cells can be improved.

In one embodiment, the thermal management component further includes a second buffer member disposed on a side of the first bead facing the adjacent cell. In this way, in the process of assembling the battery cell and the adjacent thermal management component, the second buffer piece can be utilized to reduce the influence of the dimensional tolerance of the battery cell and the adjacent thermal management component in the first direction, and further the yield of the battery can be improved.

In one embodiment, the base structure and the projection structure are a unitary structure. Therefore, the manufacturing efficiency of the body can be improved, the matrix structure and the convex structure are integrally formed, and the manufacturing cost of the die can be reduced.

In one embodiment, the body comprises a thermally insulating material. The body made of the heat insulation material can reduce heat transfer between adjacent battery monomers, and further can improve the safety and reliability of the battery.

According to a second aspect of the present application, there is provided a battery comprising a battery cell and the thermal management component of any of the embodiments described above, the battery cell and the thermal management component being arranged along a first direction.

In one embodiment, the battery comprises a plurality of battery cells arranged at intervals along the first direction, and a thermal management component is arranged between two adjacent battery cells.

In one embodiment, the body is provided with first buffer members on two opposite sides along the first direction.

In one embodiment, the battery further comprises two first side plates, the two first side plates define a containing space for containing the battery cells and the thermal management components, an air inlet communicated with the heat dissipation channel is formed in one of the first side plates, and an air outlet communicated with the heat dissipation channel is formed in the other first side plate. Cooling gas flows into the accommodating space through the air inlet of one of the first side plates and enters the heat dissipation channel, and after the cooling gas exchanges heat with the adjacent battery monomers, the cooling gas flows out from the air outlet of the other first side plate, so that the purpose of timely taking away the heat of the battery monomers is achieved, and the heat dissipation effect and heat dissipation efficiency of the battery can be effectively improved.

According to a third aspect of the present application, there is provided an electrical device comprising a battery according to any of the embodiments described above.

Drawings

Fig. 1 shows a schematic structural diagram of a vehicle according to an embodiment of the present application.

Fig. 2 shows a schematic structural view of a battery in an embodiment of the present application.

Fig. 3 shows a schematic structural view of a battery cell and a thermal management component in an embodiment of the present application.

Fig. 4 shows a schematic structural view of a battery cell and a thermal management component (including a schematic structural view of a first region) in an embodiment of the present application.

FIG. 5 illustrates a schematic structural diagram of a thermal management component in an embodiment of the present application.

FIG. 6 illustrates a side view of a thermal management component in an embodiment of the present application.

Reference numerals:

1. a vehicle;

10. a battery;

100. a battery cell; 101. a first region; 102. a second region;

200. a thermal management component;

210. a body; 211. a base structure; 212. a bump structure; 2121. the first convex rib; 2122. the second convex rib;

220. a first buffer member; 221. a first end; 222. a second end; 223. a main body portion;

230. a second buffer member;

300. a heat dissipation channel;

410. a bottom plate; 420. a first side plate; 421. an air inlet;

500. An accommodation space;

20. a motor;

30. and a controller.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If 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," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The reason for the high potential safety hazard of the traditional battery is mainly that: the first reason is that: in the use process of the battery monomer of the battery, heat can be generated, so that the temperature of the battery is increased, and the potential safety hazard of the battery is higher; the second reason is that: the battery monomer can expand in the use process, and the potential safety hazard of the battery can be high.

In order to solve the problem that the potential safety hazard of traditional batteries is higher, through intensive research, the application designs a thermal management component for batteries, can utilize this thermal management component to dispel the heat to the battery monomer of battery, can utilize this thermal management component to carry out buffer protection to the battery monomer again, so, this thermal management component has improved the security of battery from the two aspects of heat dissipation management and inflation management, has widened the range of application of battery.

The thermal management components and/or batteries disclosed in embodiments of the present application may be used, but are not limited to, in electrical devices such as vehicles, boats, or aircraft. The power device may be, but is not limited to, a cell phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like. The power supply system comprising the battery and the like disclosed in the application can be used, so that electric drive is conveniently provided for the power utilization device, and the safety of the power utilization device can be improved.

Fig. 1 shows a schematic structural diagram of a vehicle 1 according to an embodiment of the present application, where the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The battery 10 is provided inside the vehicle 1. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, for example, for operating power requirements at start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1 but also as a driving power source for the vehicle 1, instead of or in addition to fuel oil or natural gas, to provide driving force for the vehicle 1.

The motor 20 and the controller 30 may also be provided in the interior of the vehicle 1, the controller 30 being configured to control the battery 10 to supply power to the motor 20, for example, for operating power requirements during start-up, navigation and travel of the vehicle 1.

Fig. 2 shows a schematic structural view of the battery 10 in an embodiment of the present application, and fig. 3 shows a schematic structural view of the battery cell 100 and the thermal management member 200 in an embodiment of the present application.

Referring to fig. 2 and 3 in combination with fig. 4, a thermal management component 200 is provided in an embodiment of the present application for a battery 10, where the battery 10 includes at least one battery cell 100, and the battery 10 further includes the thermal management component 200.

Wherein the thermal management component 200 includes a body 210 and a first bumper 220. The body 210 is disposed on the battery cell 100 along the first direction F ₁ The first buffer member 220 is disposed on a side of the body 210 facing the adjacent battery cells 100, and a heat dissipation channel 300 is defined between the first buffer member 220, the body 210 and the adjacent battery cells 100, and the heat dissipation channel 300 is used for accommodating a heat exchange medium.

The body 210 refers to a member capable of separating two adjacent battery cells 100, and the body 210 may have a plate shape or a gasket shape.

The first buffer 220 refers to a member capable of being compressed when a force is applied and providing a certain expansion space for the battery cell 100. The first buffer 220 is configured to be deformable in response to expansion and compression of the adjacent battery cells 100 to provide a buffer space. The material of the first buffer member 220 may be a foaming material or rubber, the foaming material may be a new polypropylene microcellular foam Material (MPP), and the rubber may be Ethylene Propylene Diene Monomer (EPDM). The first buffer member 220 may have a strip shape, a curved shape, a folded shape, or other shapes, which are not particularly limited herein.

Optionally, the first buffer member 220 is detachably disposed on the body 210, so as to facilitate the replacement of the first buffer member 220. For example, the first buffer member 220 may be adhered to the body 210, and for example, the first buffer member 220 may be clamped to the body 210. Of course, the present application is not limited thereto, and other manners of detachably fixing the first buffer 220 to the body 210 may be adopted.

With heat-exchange medium as cooling gasFor illustration, the body 210 is disposed along the first direction F of the battery cell 100 ₁ The first buffer member 220, the body 210 and the adjacent battery cells 100 define a heat dissipation channel 300, so that the cooling gas flowing into the heat dissipation channel 300 can flow through the battery cells 100 and perform heat dissipation treatment on the battery cells 100, thereby reducing the battery cells 100 and improving the safety of the battery 10.

When the battery cells 100 expand, the first buffer member 220 can absorb the expansion force generated by the expansion of the battery cells 100, so as to play a role in buffering, and can also provide expansion space for the adjacent battery cells 100, so that the battery cells 100 can be well protected.

Therefore, with the thermal management component 200, not only can heat dissipation be performed on the battery cells 100 of the battery 10, but also expansion space and buffer protection can be provided for the battery cells 100, so that the thermal management component 200 can improve the safety of the battery 10 in terms of heat dissipation management and expansion management, and widen the application range of the battery 10.

In some embodiments, the side of the battery cell 100 facing the thermal management component 200 includes a first region 101, and the second region F is located along the second direction F in the first region 101 ₂ Second regions 102 on both sides. The front projection of the first buffer member 220 on the adjacent battery cell 100 is at least partially overlapped with the first region 101 of the battery cell 100. Wherein, in the first direction F ₁ And a second direction F ₂ Perpendicular, and in the second direction F ₂ Parallel to the side of the battery cell 200 facing the thermal management component 100.

Optionally, a second direction F ₂ A direction parallel to the bottom of the body 210 pointing toward the top of the body 210.

Specifically, a first direction F ₁ May be parallel to the horizontal direction, the second direction F ₂ May be parallel to the direction of gravity of the battery cell 100. The first region 101 refers to a region where the battery cell 100 swells and swells more significantly when it swells, the second region 102 refers to a region where the battery cell 100 swells more flatly than the first region 101, and the swelling degree of the first region 101 is greater than the swelling degree of the second region 102, wherein the swelling degree of the second region 102 is greater than the swelling degree of the first regionThe first region 101 of the battery cell 100 is along the first direction F when the cell 100 expands ₁ Maximum dimension D of (2) ₁ The battery cell 100 is not expanded along the first direction F ₁ Is of size D ₀ The degree of expansion at the first region 101 is equal to (D ₁ -D ₀ )/D ₀ X 100%; the second region 102 of the battery cell 100 is along the first direction F when the battery cell 100 expands ₁ Maximum dimension D of (2) ₂ The degree of expansion at the second region 102 is equal to (D ₂ -D ₀ )/D ₀ ×100％。

In the second direction F ₂ I.e., in a direction parallel to the gravitational force of the battery cell 100, the first region 101 is located approximately in the middle region of the battery cell 100. That is, in the second direction F ₂ The bottom of the first region 101 has a space from the bottom of the battery cell 100, and the top of the first region 101 has a space from the top of the battery cell 100.

Optionally, define a direction perpendicular to the second direction F ₂ The plane of (a) is a first virtual plane S, and the battery cell 100 is along the second direction F ₂ The dimension in the direction is H, the height of the first virtual plane S is 1/2H, and the first area 101 is symmetrically distributed by taking the first virtual plane S as a reference standard.

Optionally, the height of the bottom of the first region 101 is less than 1/2H and greater than 1/5H, and the height of the top of the first region 101 is greater than 1/2H and less than 4/5H in a direction parallel to the bottom of the body 210 and directed toward the top of the body 210.

Optionally, the height of the bottom of the first region 101 is less than 1/2H and greater than or equal to 1/3H, and the height of the top of the first region 101 is greater than 1/2H and less than or equal to 2/3H in a direction parallel to the bottom of the body 210 and directed toward the top of the body 210.

Because the front projection of the first buffer member 220 on the adjacent battery cell 100 is at least partially overlapped with the first region 101 of the battery cell 100, when the battery cell 100 expands, compared with the second region 102 of the battery cell 100, the expansion degree of the first region 101 of the battery cell 100 is larger, and the first buffer member 220 can well absorb the expansion force generated by the expansion of the battery cell 100, so that the first buffer member 220 can be utilized to well buffer, and also can provide an expansion space for the first region 101 of the battery cell 100, so that the battery cell 100 can be well protected.

In some embodiments, the first bumper 220 is along the third direction F ₃ Longitudinally extending and arranged in the second direction F ₂ With a third direction F ₃ Intersecting each other and all perpendicular to the first direction F ₁ 。

Third direction F ₃ May be parallel to the horizontal direction or may be inclined with respect to the horizontal direction as long as the third direction F ₃ It is sufficient that the side surface facing the adjacent battery cell 100 is parallel to the body 210.

By means in a third direction F ₃ The extended first buffer 220 can provide a good expansion space and buffer protection for the adjacent battery cells 100, thereby improving the safety of the battery 10.

In some embodiments, referring to fig. 5, the first buffer 220 includes a first buffer member along a third direction F ₃ The battery cell comprises a first end 221 and a second end 222 which are oppositely arranged, and a main body part 223 connected between the first end 221 and the second end 222, wherein the front projection of the main body part 223 on the adjacent battery cell 100 is overlapped with the first area 101 of the battery cell 100, and the front projection of at least one of the first end 221 and the second end 222 on the adjacent battery cell 100 is staggered with the first area 101 of the battery cell 100.

The front projections of the first end 221 and the second end 222 on the adjacent battery cells 100 may be offset from the first area 101 of the battery cell 100; the front projection of one of the first end 221 and the second end 222 on the adjacent battery cell 100 may be offset from the first region 101 of the battery cell 100, and the front projection of the other of the first end 221 and the second end 222 on the adjacent battery cell 100 may be overlapped with the first region 101 of the battery cell 100.

Because the front projection on the adjacent battery cell 100 overlaps the first area 101 of the battery cell 100, it can be appreciated that the front projection of the majority of the first buffer member 220 on the adjacent battery cell 100 overlaps the first area 101 of the battery cell 100, so that more parts of the first buffer member 220 can absorb the expansion force generated by the expansion of the battery cell 100, and can provide more expansion space for the battery cell 100, thereby improving the protection effect of the thermal management component 200 on the battery cell 100 and reducing the possibility of the expansion failure of the battery cell 100.

In some embodiments, the orthographic projections of the first end 221 and the second end 222 on adjacent cells 100 are each offset from the first region 101 of the cell 100.

In this way, the first buffer member 220 can form buffer protection along the longitudinal extension direction of the first buffer member 220 for the adjacent battery cells 100, so that the first buffer member 220 can be better utilized to provide expansion space and buffer protection for the adjacent battery cells 100, and further the safety of the battery 10 can be improved well.

In some embodiments, in the second direction F ₂ The distance between the first buffer member 220 and the bottom of the body 210 is greater than a predetermined value, wherein the first direction F ₁ And a second direction F ₂ Perpendicular, and in the second direction F ₂ Parallel to the side of the battery cell 100 facing the thermal management member 200.

Specifically, a first direction F ₁ May be parallel to the horizontal direction, the second direction F ₂ May be parallel to the direction of gravity of the battery cell 100.

Referring to fig. 6, the distance between the lowermost first buffer member 220 and the bottom of the body 210 is a, and a is greater than a predetermined value, and then the distance between the other first buffer members 220 and the bottom of the body 210 is also greater than a predetermined value.

In the second direction F ₂ On the above, the distance between the first buffer member 220 and the bottom of the body 210 is greater than a preset value, it can be understood that the first buffer member 220 is in the second direction F ₂ Having a certain height to enable the first bufferMember 220 is in a second direction F ₂ Closer to the battery cell 100 in the second direction F ₂ In this way, the first buffer member 220 can absorb the expansion force generated by the expansion of the battery cell 100, so as to better provide expansion space and buffer protection for the adjacent battery cell 100, and further improve the safety of the battery 10.

In some embodiments, battery cell 100 is in second direction F ₂ The dimension of (a) is H (as shown in FIG. 4), and the preset value is greater than or equal to 1/5H.

H is the second direction F of the battery cell 100 except for the polar posts of the battery cell 100 ₂ As can be appreciated, H is approximately equal to the height of the battery cell 100.

It will be appreciated that A is greater than 1/5H, then, in the second direction F ₂ The first buffer member 220 is closer to the 1/2H position of the battery cell 100, so that the first buffer member 220 can have more contact with the first region 101 of the battery cell 100 to better absorb the expansion force generated by the expansion of the battery cell 100, and thus, the first buffer member 220 can provide expansion space and buffer protection for the adjacent battery cell 100, and the safety of the battery 10 can be improved.

In some embodiments, the preset value is greater than or equal to 1/5H and the preset value is less than 4/5H.

The preset value needs to be set within a suitable range so that in the second direction F ₂ The first buffer member 220 is closer to 1/2H of the battery cell 100, so that the safety of the battery 10 can be improved by providing expansion space and buffer protection for the adjacent battery cell 100 by the first buffer member 220.

In some embodiments, the preset value is greater than or equal to 1/3H. Optionally, the preset value is greater than or equal to 1/3H, and the preset value is less than 2/3H.

So arranged that the first cushioning member 220 is capable of moving in the second direction F ₂ Closer to 1/2H of the battery cell 100, the first buffer member 220 is allowed to contact the first region 101 of the battery cell 100 more to absorb the expansion force generated by the expansion of the battery cell 100 better, so that the first buffer member 220 can betterProviding expansion space and buffer protection to adjacent cells 100 may improve the safety of battery 10.

In some embodiments, at least two first buffers 220 are disposed on a side of the body 210 facing the adjacent battery cells 100, the at least two first buffers 220 are defined as a group of buffer assemblies, and a heat dissipation channel 300 is disposed between the two adjacent first buffers 220 in the buffer assemblies.

On the one hand, the heat dissipation channels 300 between two adjacent first buffer members 220 can be utilized to dissipate heat to the adjacent battery cells 100; on the other hand, the two first buffers 220 may be used to better provide expansion space and buffer protection for the adjacent battery cells 100, and the safety of the battery 10 may be improved.

In some embodiments, a direction perpendicular to the second direction F is defined ₂ The plane of (a) is a first virtual plane S, and the battery cell 100 is along the second direction F ₂ Is H in the second direction F in the first virtual plane S ₂ The height of the upper part is 1/2H, and at least two first cushioning members 220 in the cushioning assembly are respectively located at two sides of the first virtual plane S. Wherein, in the first direction F ₁ And a second direction F ₂ Perpendicular, and in the second direction F ₂ Parallel to the side of the battery cell 200 facing the thermal management component 100.

Since the at least two first buffer members 220 in the buffer assembly are disposed on both sides of the first virtual plane S, the at least two first buffer members 220 in the buffer assembly respectively provide the battery cells 100 with the second direction F ₂ The expansion space and the buffer protection are provided, the expansion force generated by the expansion of the battery cell 100 can be better absorbed, and the safety of the battery 10 can be further improved.

In some embodiments, at least two first cushioning members 220 in the cushioning assembly are symmetrically arranged with respect to a first virtual plane S. In this way, the at least two first buffer members 220 in the buffer assembly are symmetrically arranged, and the first areas 101 are symmetrically arranged with the first virtual plane S as a reference standard, so that the front projection of the at least two first buffer members 220 in the buffer assembly on the adjacent battery cells 100 can also be approximately symmetrically arranged with respect to the middle area (i.e., the first areas 101) of the battery cells 100 as a reference standard, and further, the at least two first buffer members 220 in the buffer assembly can uniformly absorb the expansion force generated by the expansion of the battery cells 100, so as to provide uniform expansion space and buffer protection for the adjacent battery cells 100, thereby better improving the safety of the battery 10.

In some embodiments, the cushion assembly is positioned in the second direction F ₂ In the second direction F, of the two first cushioning members 220 on opposite sides of ₂ The two first buffer members 220 are spaced apart from each other by a distance B along the second direction F ₂ Is H. B and H satisfy the following conditions: b is more than or equal to 1/5H and less than or equal to 4/5H. Wherein, in the first direction F ₁ And a second direction F ₂ Perpendicular, and in the second direction F ₂ Parallel to the side of the battery cell 200 facing the thermal management component 100.

B is set in a suitable range, so that in the second direction F ₂ On, all the first buffer parts 220 located in the buffer assembly can be well close to the middle of the adjacent battery cells 100, and all the first buffer parts 220 of the buffer assembly can be used for absorbing the expansion force generated by the expansion of the battery cells 100, so that the expansion space and the buffer protection can be better provided for the adjacent battery cells 100, and the safety of the battery 10 can be better improved.

In some embodiments, 1/3 H.ltoreq.B.ltoreq.2/3H.

Thus, in the second direction F ₂ On, all the first buffer parts 220 located in the buffer assembly are closer to the middle of the adjacent battery cells 100, and all the first buffer parts 220 of the buffer assembly can be utilized to provide more expansion space for the adjacent battery cells 100, and can also better absorb the expansion force generated by the expansion of the adjacent battery cells 100, so that the safety of the battery 10 can be better improved.

In some embodiments, the body 210 includes a base structure 211 and a raised structure 212, the base structure 211 along a first direction F ₁ Is provided with a bump structure 212 and a first buffer 220 along a second direction F ₂ The protruding structure 212 is located outside the first buffer member 220 in the first direction F ₁ And second (b)Direction F ₂ Perpendicular, and in the second direction F ₂ Parallel to the side of the battery cell 200 facing the thermal management component 100. The bump structure 212 may include a bump protruding from the base structure 211 along the first direction F ₁ At least one rib on at least one side can also be a convex part with other shapes.

In this way, since the protrusion structure 212 is located on the first buffer 220 along the second direction F ₂ The protrusion structure 212 is less likely to contact the first region 101 of the battery cell 100, the impact of the protrusion structure 212 on the expanded battery cell 100 can be reduced, and the protrusion structure 212 can provide a rigid support for the battery cell 100; and using a direction along the second direction F ₂ The first buffer 220 positioned inside the protrusion structure 212 provides the expansion space and buffer protection for the battery cell 100, and thus, the safety of the battery 10 can be well improved.

In some embodiments, the raised structures 212 comprise a plurality of raised ribs, the base structure 211 being positioned along the first direction F ₁ The ribs and the first buffer members 220 on the same side and the adjacent battery cells 100 define a plurality of heat dissipation channels 300, and the plurality of heat dissipation channels 300 are along the second direction F ₂ And (5) arranging at intervals.

Specifically, the base structure 211 is located on the base structure 211 along the first direction F ₁ The first ribs 2121, the second ribs 2122 and the first buffer 220 on the same side, and the adjacent battery cells 100 define a plurality of heat dissipation channels 300.

The plurality of heat dissipation channels 300 can be utilized to dissipate heat of the same adjacent battery cells 100, so as to improve the heat dissipation effect of the battery cells 100.

In some embodiments, the raised structure 212 includes a plurality of ribs, the plurality of ribs of the raised structure 212 being located along the second direction F for all of the first bumpers 220 ₂ Is provided on opposite sides of (a).

In this way, adjacent battery cells 100 can be given a second direction F by the protruding structures 212 ₂ Providing hard support on opposite sides of the battery 10 may improve reliability of the battery.

In some embodiments, the raised structures 212 include a plurality of raised ribs, along the first direction F ₁ The at least one rib has a size larger than the first buffer 220.

May be in the first direction F ₁ The first ribs 2121 have a size larger than that of the first bumper 220. May also be in the first direction F ₁ The second ribs 2122 have a size larger than that of the first bumper 220. Of course, it is also possible to follow the first direction F ₁ The first ribs 2121 have a size greater than the first bumper 220 and the second ribs 2122 have a size greater than the first bumper 220.

Due to being in the first direction F ₁ The size of at least one rib is larger than that of the first buffer 220, and the rib is combined along the second direction F ₂ The ribs are located outside the first buffer 220, thus, in the first direction F ₁ The ribs and the first buffer member 220 form a height difference, so that more expansion space can be provided for the battery cell 100, which is beneficial to improving the safety of the battery 10.

In some embodiments, the raised structures 212 include a plurality of raised ribs including a plurality of raised ribs disposed on the base structure 211 along the second direction F ₂ At least one first rib 2121 and along the second direction F ₂ A second rib 2122 located inside the first rib 2121 along the first direction F ₁ The first ribs 2121 have a larger size than the second ribs 2122.

It will be appreciated that in the second direction F ₂ The first rib 2121 is further away from the middle region (generally corresponding to the first region 101) of the adjacent cell 100 than the second rib 2122, and thus the first rib 2121 extends in the first direction F ₁ Is greater than the second rib 2122 in the first direction F ₁ Is sized such that first rib 2121 and second rib 2122 are in a first direction F ₁ The height difference is formed, so that more expansion space can be provided for the battery cell 100, and the safety of the battery 10 is improved.

In some embodiments, the bump structure 212 includes two first bumps 2121, and the two first bumps 2121 are respectively disposed on the base structure 211 along the second direction F ₂ Is provided.

The two first ribs 2121 symmetrically arranged can well provide uniform supporting force for the adjacent battery cells 100, and can improve the reliability of the battery cells 100.

In some embodiments, the thermal management component 200 further includes a second bumper 230, the second bumper 230 being disposed on a side of the first ridge 2121 facing toward the adjacent cell 100.

In this manner, the second buffer 230 can be utilized to reduce the battery cell 100 and the adjacent thermal management component 200 in the first direction F during assembly of the battery cell 100 and the adjacent thermal management component 200 together ₁ The influence of the dimensional tolerance can further improve the yield of the battery 10.

In some embodiments, the two first ribs 2121 are respectively provided with a second buffer 230.

In this way, the symmetrically disposed second buffer members 230 can better provide uniform supporting force to the adjacent battery cells 100, and can also better reduce the first direction F of the battery cells 100 and the adjacent thermal management components 200 ₁ The effect of dimensional tolerances on the material.

In some embodiments, base structure 211 is a unitary structure with raised structures 212.

Thus, the manufacturing efficiency of the body 210 can be improved, the base structure 211 and the protruding structure 212 are integrally formed, and the manufacturing cost of the mold can be reduced.

In some embodiments, the material of the body 210 includes an insulating material.

The body 210 is a high temperature resistant insulating material with a low coefficient of thermal conductivity. Illustratively, the body 210 may be bakelite or epoxy board, which provides good thermal insulation.

The body 210 is high temperature resistant and low in heat conductivity, and when the battery cells 100 are out of control, the body 210 made of the heat insulation material is low in heat conductivity, so that heat transfer between adjacent battery cells 100 can be reduced, and the safety and reliability of the battery 10 can be improved.

The present application provides a battery 10 comprising a battery cell 100 and a thermal management component 200 of any of the above embodiments, the battery cell 100 and the thermal management portion Member 200 is in a first direction F ₁ And (5) laying.

In some embodiments, the battery 10 includes a battery that extends in a first direction F ₁ A plurality of battery cells 100 are arranged at intervals, and a thermal management component 200 is arranged between two adjacent battery cells 100.

By using the thermal management component 200, heat can be dissipated to the corresponding battery cell 100, and expansion space and buffer protection can be provided to the corresponding battery cell 100, so that the safety of the battery 10 can be effectively improved.

In some embodiments, the body 210 is along the first direction F ₁ At least one first buffer member 220 is disposed on opposite sides of the frame.

In some embodiments, the body 210 is along the first direction F ₁ At least one first bumper 220, at least one first rib 2121, at least one second rib 2122, and at least one second bumper 230 are disposed on opposite sides of the frame.

Illustratively, each body 210 is oriented in a first direction F ₁ Two first buffers 220, two first ribs 2121, two second ribs 2122, and two second buffers 230 are provided on opposite sides. In the first direction F ₁ The two first bumpers 220, the two first ribs 2121 and the two second ribs 2122 on the same side define a plurality of heat dissipation channels 300.

The two first buffer members 220, the two first ribs 2121, and the two second ribs 2122 are symmetrically arranged with respect to the first virtual plane S, respectively.

In this way, with the thermal management component 200 of the present application, on one hand, the cooling gas flowing into the heat dissipation channel 300 can well dissipate heat of the battery cell 100; on the other hand, the expansion force generated by the expansion of the adjacent battery cells 100 of the first buffer member 220 can be well utilized, so that the first buffer member 220 provides expansion space and buffer protection for the corresponding battery cell 100, and utilizes the space between the first protruding rib 2121 and the second protruding rib 2122 along the first direction F ₁ In the first direction F between the ribs and the first cushioning member 220 ₁ The height difference of (2) provides an expansion space for the corresponding battery cell 100, and thus, the safety of the battery 10 can be effectively improved.

In some embodiments, the battery 10 further includes two first side plates 420, where the two first side plates 420 define a receiving space 500 for receiving the battery cells 100 and the thermal management component 200, and one of the first side plates 420 is provided with an air inlet 421 in communication with the heat dissipation channel 300, and the other first side plate 420 is provided with an air outlet in communication with the heat dissipation channel 300.

Optionally, two first side plates 420 are positioned along the third direction F between the battery cell 100 and the thermal management component 200 ₃ Opposite sides of (a), a first direction F ₁ With a third direction F ₃ Perpendicular to each other.

The cooling gas flows into the accommodating space 500 through the air inlet 421 of one of the first side plates 420 and enters the heat dissipation channel 300, and after the cooling gas exchanges heat with the adjacent battery cells 100, the cooling gas flows out from the air outlet of the other first side plate 420, so that the purpose of timely taking away the heat of the battery cells 100 is achieved, and the heat dissipation effect and heat dissipation efficiency of the battery 10 can be effectively improved.

In some embodiments, one of the first side plates 420 is provided with a plurality of air inlets 421 corresponding to the battery cells 100 one by one, and the other first side plate 420 is provided with a plurality of air outlets corresponding to the battery cells 100 one by one.

Therefore, the battery 10 of the present application can utilize the thermal management component 200 to dissipate heat for the corresponding battery cells 100, and can utilize the corresponding air inlet 421 and the corresponding air outlet to timely take away the heat of each battery cell 100, so that the heat dissipation effect and heat dissipation efficiency of the battery 10 can be effectively improved.

In some embodiments, the battery 10 further includes a bottom plate 410, a top plate, and two second side plates, the bottom plate 410, the top plate, the two first side plates 420, and the two second side plates enclosing the receiving space 500 to encapsulate the plurality of battery cells 100 and the plurality of thermal management components 200 within the receiving space 500.

The present application also provides an electrical device comprising a battery 10 according to any of the embodiments described above.

By utilizing the battery 10, the safety and the service life of the power utilization device 10 can be effectively improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A thermal management component (200) for a battery, the battery comprising a battery cell (100), the thermal management component (200) comprising:

a body (210) provided on at least one side of the battery cell (100) in a first direction; and

The first buffer piece (220) is arranged on one side, facing the adjacent battery cells (100), of the body (210), a heat dissipation channel (300) is defined between the first buffer piece (220), the body (210) and the adjacent battery cells (100), and the heat dissipation channel (300) is used for accommodating heat exchange media.

2. The thermal management component (200) of claim 1, wherein a side of the battery cell (100) facing the thermal management component comprises a first region (101) and a second region (102) located on both sides of the first region (101) in a second direction;

orthographic projection of the first buffer (220) on the adjacent battery cell (100) is at least partially overlapped with the first area (101) of the battery cell (100);

wherein the first direction is perpendicular to the second direction, and the second direction is parallel to a side of the battery cell facing the thermal management component.

3. The thermal management component (200) of claim 2, wherein the first bumper (220) is disposed extending lengthwise along a third direction;

the second direction and the third direction intersect each other and are both perpendicular to the first direction.

4. The thermal management component (200) of claim 3, wherein the first bumper (220) includes a first end (221) and a second end (222) disposed opposite along the third direction, and a body portion (223) connected between the first end (221) and the second end (222);

-an orthographic projection of said body portion (223) on an adjacent said cell (100), being arranged overlapping with said first region (101) of said cell (100);

at least one of the first end (221) and the second end (222) is arranged offset from the first region (101) of the adjacent battery cell (100) in an orthographic projection on the battery cell (100).

5. The thermal management component (200) of claim 1, wherein a spacing between the first bumper (220) and a bottom of the body (210) in a second direction is greater than a preset value;

6. The thermal management component (200) of claim 5, wherein the dimension of the battery cell (100) along the second direction is H;

The preset value is greater than or equal to 1/5H.

7. The thermal management component (200) of claim 6, wherein the preset value is greater than or equal to 1/3H.

8. The thermal management component (200) of claim 1, wherein a side of the body (210) facing an adjacent cell (100) is provided with at least two first buffers (220), defining the at least two first buffers (220) as a set of buffer assemblies;

the heat dissipation channel (300) is arranged between two adjacent first buffer pieces (220) in the buffer assembly.

9. The thermal management component (200) of claim 8, wherein a plane perpendicular to the second direction is defined as a first virtual plane (S);

the dimension of the battery cell (100) along the second direction is H, and the height of the first virtual plane (S) along the second direction is 1/2H;

at least two first cushioning members (220) of the cushioning assembly are separated on both sides of the first virtual plane (S);

10. The thermal management component (200) of claim 9, wherein at least two of the first bumpers (220) in the bumper assembly are symmetrically arranged with respect to the first virtual plane (S).

11. The thermal management component (200) of claim 8, wherein a spacing between sides of two of said first bumpers (220) located on opposite sides of said bumper assembly in a second direction along which said two first bumpers (220) face away from each other is B;

-the dimension of the battery cell (100) along the second direction is H;

b and H satisfy the following conditions: b is more than or equal to 1/5H and less than or equal to 4/5H;

12. The thermal management component (200) of claim 11, wherein 1/3 h+.b+.2/3H.

13. The thermal management component (200) of any of claims 1-12, wherein the body (210) comprises a base structure (211) and a raised structure (212);

at least one side of the base structure (211) along the first direction is provided with the protruding structure (212) and the first buffer member (220);

In a second direction, the raised structure (212) is located outside the first bumper (220);

the first direction is perpendicular to the second direction, and the second direction is parallel to a side of the battery cell facing the thermal management component.

14. The thermal management component (200) of claim 13, wherein the raised structure (212) comprises a plurality of ribs;

the base structure (211), the ribs and the first buffer members (220) which are positioned on the same side of the base structure (211) along the first direction, and the adjacent battery cells (100) define a plurality of heat dissipation channels (300), and the heat dissipation channels (300) are distributed at intervals along the second direction.

15. The thermal management component (200) of claim 13, wherein the raised structure (212) comprises a plurality of ribs;

a plurality of the ribs of the raised structure (212) are located on opposite sides of all of the first cushioning members (220) in the second direction.

16. The thermal management component (200) of claim 13, wherein the raised structure (212) comprises a plurality of ribs, at least one of the ribs having a dimension in the first direction that is greater than a dimension of the first bumper (220).

17. The thermal management component (200) of claim 13, wherein the raised structure (212) comprises a plurality of ribs;

the plurality of ribs comprises a first rib (2121) arranged at least one end of the base structure (211) along the second direction, and a second rib (2122) positioned inside the first rib (2121) along the second direction;

the first ribs (2121) have a dimension greater than a dimension of the second ribs (2122) along the first direction.

18. The thermal management component (200) of claim 17, wherein the raised structure (212) comprises two of the first ribs (2121), the two first ribs (2121) being disposed at opposite ends of the base structure (211) along the second direction, respectively.

19. The thermal management component (200) of claim 18, wherein the thermal management component (200) further comprises a second bumper (230), the second bumper (230) being disposed on a side of the first ridge (2121) facing toward an adjacent cell (100).

20. The thermal management component (200) of claim 13, wherein the base structure (211) is a unitary structure with the raised structure (212).

21. The thermal management component (200) of any of claims 1-12, wherein the material of the body (210) comprises an insulating material.

22. A battery comprising a battery cell (100) and a thermal management component (200) according to any of claims 1-21;

the battery cells (100) and the thermal management component (200) are arranged along the first direction.

23. The battery according to claim 22, characterized in that the battery comprises a plurality of battery cells (100) arranged at intervals along a first direction, wherein one thermal management component (200) is arranged between two adjacent battery cells (100).

24. The battery according to claim 23, wherein the body (210) is provided with the first buffer (220) on opposite sides in the first direction.

25. The battery according to claim 22, further comprising two first side plates (420), the two first side plates (420) defining a receiving space (500) for receiving the battery cell (100) and the thermal management component (200);

one of the first side plates (420) is provided with an air inlet (421) communicated with the heat dissipation channel (300), and the other first side plate (420) is provided with an air outlet communicated with the heat dissipation channel (300).

26. An electrical device comprising a battery as claimed in any one of claims 22 to 25.