CN221727226U - Battery and electric equipment - Google Patents

Abstract

The embodiment of the application provides a battery and electric equipment. The battery includes a plurality of battery cells and at least one insulating and heat conducting member. The plurality of battery cells are sequentially arranged along the first direction, each battery cell is respectively provided with two first walls which are oppositely arranged along the first direction and at least one second wall which extends between the two first walls, and each battery cell comprises at least one pole arranged on the at least one second wall. The at least one insulating and heat conducting member includes a body portion disposed between first walls of two adjacent battery cells along a first direction and at least one extension portion extending from the body portion. The at least one extension extends toward the at least one pole at least partially in close proximity and/or contact with the at least one second wall along the first direction.

Description

Battery and electric equipment

Technical Field

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

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and in this case, electric vehicles become an important component of sustainable development of automobiles due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor for development.

For the battery, thermal runaway is liable to occur during use due to heat accumulation. Battery technology has a need for improvement in reducing the probability of thermal runaway.

Disclosure of utility model

One of the purposes of the embodiments of the present application is: the battery and the electric equipment are provided, so that the probability of thermal runaway in the working process of the battery is reduced.

In a first aspect, the present application provides a battery comprising: the battery comprises a plurality of battery cells, a plurality of electrode plates and a plurality of electrode plates, wherein the battery cells are sequentially arranged along a first direction, each battery cell is provided with two first walls which are oppositely arranged along the first direction and at least one second wall which extends between the two first walls, and each battery cell comprises at least one electrode post arranged on the at least one second wall; at least one insulating and thermally conductive member comprising a body portion disposed between first walls of two adjacent battery cells along the first direction and at least one extension portion extending from the body portion, the at least one extension portion extending toward the at least one post at least partially along the first direction in close proximity and/or contact with the at least one second wall.

The battery provided by the embodiment of the application is beneficial to realizing heat dispersion and dissipation in a severe heat generation area by providing the extension part for heat transfer, which is closer to the pole, and conducting the heat to the main body part with a larger area generally and possibly to the cooling part, so that the heat diffusion effect of the battery cell is improved.

In some embodiments, the at least one extension at least partially surrounds the at least one pole.

By providing the extension with a larger section close to the pole, the guiding of heat at the pole is more effectively achieved.

In some embodiments, the at least one extension at least partially contacts the at least one pole.

By providing the extension with a contact interface with the pole, both can directly conduct heat in addition to convection and radiant heat transfer, more efficient conduction of the heat of the pole itself is achieved.

In some embodiments, the at least one extension includes a hole in which the at least one pole is positioned.

By providing the extension with holes for receiving the poles, guiding of heat at the poles is more efficiently achieved and positioning and mounting of the insulating and heat conducting member with respect to the battery cell is also facilitated.

In some embodiments, the battery includes a cooling member, the plurality of battery cells facing the cooling member through a third wall extending between the two first walls different from the at least one second wall, the body portion of the at least one insulating and thermally conductive member being connected to the cooling member on a side facing the third wall.

By providing cooling means, it is advantageous to accelerate heat release and alleviate the internal temperature of the battery from becoming too high.

In some embodiments, the at least one second wall is a single second wall, the at least one post is two posts spaced apart along a second direction intersecting the first direction, the at least one insulating and thermally conductive member includes two extending portions spaced apart along the second direction, the two extending portions extending toward a same side of the body portion relative to the first direction.

By the specific arrangement of the walls and the poles and the consistent extension orientation of the extensions, a simple, compact structural design of the battery is facilitated, and processing and assembly are facilitated.

In some embodiments, the two extension portions of the at least one insulated heat conductive member extend from the body portion independently of each other.

By providing the insulating and heat conducting member with two extensions independent of each other, the heat guiding can be concentrated mainly in the pole and its neighborhood, and the coverage of the area of the second wall that needs to be fully exposed, e.g. a possible pressure relief structure, can be reduced.

In some embodiments, a pressure relief structure is provided to the second wall between the two poles spaced apart along the second direction, the two extensions of the at least one insulated thermally conductive member being positioned away from the pressure relief structure.

By arranging the extension of the insulating heat conducting member sufficiently avoiding the pressure relief structure, the influence on the operation of the pressure relief structure can be reduced, and the probability of masking the response to the temperature reaching the threshold value due to direct heat dissipation of the pressure relief structure can also be reduced.

In some embodiments, the battery includes an end insulating heat conducting member configured identically to the at least one insulating heat conducting member, the end insulating heat conducting member being disposed at the first wall of a last battery cell along the same opposite orientation with respect to the opposite orientation of the same side of the body portion relative to the first direction.

By providing the same end insulating heat conducting member as between two adjacent battery cells along the first direction, the heat guidance at the post is easily provided for the last battery cell, and the size of the assembly formed by each battery cell and each insulating heat conducting member along the first direction is not excessively increased.

In some embodiments, the at least one second wall is a single second wall, the third wall being opposite the second wall.

By arranging the poles of the battery cells and possibly the pressure relief structure on the opposite wall of the side where the cooling component is located, a decentralized arrangement of the individual components is achieved, which is advantageous for simplifying the structure of the individual components and for providing installation space for other components, such as the bus bar component.

In some embodiments, the battery includes a bus member for electrically connecting the one or more poles, the at least one extension being in contact with the bus member through at least one section thereof facing away from the at least one second wall.

By providing the extension portion with a contact interface with the confluence member, both can directly conduct heat in addition to heat transfer by convection and radiation, and also realize guiding of heat of the confluence member through the insulating heat conducting member.

In some embodiments, each insulated heat conducting member is formed by a single sheet member such that all of the extended portions of each insulated heat conducting member are bent and/or folded through portions of the single sheet member to form a continuous portion at an angle to the body portion.

By constructing the body portion and the extension portion in a single sheet member that is partially bent and/or folded, a low profile design of the battery insulating and thermally conductive member is facilitated and the possible thermal resistance at the junction of the discrete portions is also mitigated.

In some embodiments, each of the insulating and thermally conductive members forms a layered structure comprising a base layer comprising a reinforcing material and outer layers on both sides of the base layer, each outer layer comprising a thermally conductive filler-filled silicone rubber or silicone.

By providing specific sandwich structured insulating and thermally conductive components, both-sided thermal conductivity and overall structural durability are enhanced.

In a second aspect, the present application provides an electrical device, the electrical device comprising the battery described above.

By having the features of embodiments of the present application, powered devices are provided that can achieve the benefits described with respect to batteries.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the application;

Fig. 2 is an exploded view of a structure of a battery provided in some embodiments of the present application;

Fig. 3 is a schematic structural view of a battery cell according to some embodiments of the present application;

FIG. 4 is a schematic view of a portion of a battery provided in some embodiments of the application;

fig. 5 is a schematic structural view of an insulating and heat conducting member according to some embodiments of the present application;

FIG. 6 is a schematic cross-sectional view taken through line A-A of FIG. 5, provided by some embodiments of the present application;

In the drawings, the drawings are not drawn to scale.

Marking:

100. A vehicle; 101. an axle; 102. a wheel; 103. a motor; 104. a controller; 200. a battery;

10. a case; 11. a first portion; 12. a second portion;

20. A battery cell; 201. a first wall; 202. a second wall; 203. a third wall; 204. a third wall; 205. a pole; 206. a pressure relief structure;

30. An insulating heat conductive member; 301. a main body portion; 302. an extension portion; 303. a hole; 31. an inner layer; 32. an outer layer;

40. And cooling the component.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. Furthermore, the term "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of embodiments of the present application, the term "plurality" refers to two or more, unless specifically defined otherwise. Similarly, "multiple sets" refers to two or more sets and "multiple sheets" refers to two or more sheets unless specifically defined otherwise.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the 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 embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

During use of the battery, the battery cells generate a large amount of heat and are emitted outward through many portions of the battery cells. Different locations will have different heat generation strengths. When heat is not evenly distributed and/or is timely dissipated, the heat is continuously accumulated and overlapped, which can lead to battery cell failure and even battery thermal runaway. Therefore, attention needs to be paid to the thermal diffusion requirements of the battery cells, reducing the probability of occurrence of risks.

Based on the above considerations, the inventors have conducted intensive studies to design a battery including a plurality of battery cells and at least one insulating and heat-conducting member in order to further improve the thermal diffusion capability of the battery cells and/or mitigate the probability of occurrence of risks. The plurality of battery cells are sequentially arranged along the first direction, each battery cell is respectively provided with two first walls which are oppositely arranged along the first direction and at least one second wall which extends between the two first walls, and each battery cell comprises at least one pole arranged on the at least one second wall. The at least one insulating and heat conducting member includes a body portion disposed between first walls of two adjacent battery cells along a first direction and at least one extension portion extending from the body portion. The at least one extension extends toward the at least one pole at least partially in close proximity and/or contact with the at least one second wall along the first direction.

In the above technical solution, regarding the insulating and heat conducting member, by providing the extension portion closer to the post than the main body portion between the walls, the insulating and heat conducting member is adapted to exchange heat with a severe heat generating region, particularly at the post, facilitating heat dissipation from a portion where heat is easily accumulated, conduction to a portion where the area is generally larger, and further conduction to the cooling member, thereby improving the heat diffusion effect of the battery cell.

The battery disclosed by the embodiment of the application can be used in electric equipment such as vehicles, ships or aircrafts, but is not limited to the electric equipment. The power supply system of the electric equipment can be composed by using the battery provided with the battery disclosed by the application.

The embodiment of the application provides electric equipment using a battery as a power supply, wherein the battery is configured to provide electric energy for the electric equipment. The powered device may be, but is not limited to, a cell phone, a portable device, a notebook computer, a battery car, an electric car, a ship, a spacecraft, an electric toy, and an electric tool, etc., for example, a spacecraft including an airplane, a rocket, a space plane, and a spacecraft, etc., an electric toy including a stationary or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., an electric tool including a metal cutting electric tool, a grinding electric tool, a fitting electric tool, and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 100 according to some embodiments of the application. The electric equipment can be a vehicle 100, such as a new energy automobile, which can be a pure electric automobile, a hybrid electric automobile or an extended range automobile, etc.; or the device using the battery may be an unmanned aerial vehicle or a ship, etc. The vehicle 100 includes a battery 200, the battery 200 being used to provide electrical energy for operation of the vehicle. The vehicle 100 includes an axle 101, wheels 102 coupled to the axle 101, a motor 103, and a controller 104, the motor 103 for driving the axle 101 in rotation, the controller 104 for controlling operation of the motor 103, and a battery 200 for providing electrical power for operation of the motor 103 and other components of the vehicle.

Referring to fig. 2, fig. 2 is an exploded view of a battery 200 according to some embodiments of the present application. The battery 200 may include a case 10 and a battery cell 20, the case 10 having a hollow structure inside, the battery cell 20 being received in the case 10. The battery 200 is used to provide a receiving space for the battery cells 20 and may include mounting features for the battery cells 20. The case 10 may include a first portion 11 and a second portion 12, and the first portion 11 and the second portion 12 are overlapped with each other to define an accommodating space for accommodating the battery cell 20. In addition, the connection between the first portion 11 and the second portion 12 may be sealed by a sealing member, which may be a sealing ring, a sealant, or the like.

In the battery 200, the number of the battery cells 20 may be plural, and the plural battery cells 20 may be connected in series, parallel, or series-parallel, and series-parallel refers to that the plural battery cells 20 are connected in both series and parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box 10; of course, the battery 200 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in the case 10. The battery 200 may also include other structures, for example, the battery 200 may also include a bus member for making electrical connection between the plurality of battery cells 20.

Each battery cell 20 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a battery cell 20 according to some embodiments of the application. The battery cell 20 is a basic unit for achieving the mutual conversion of chemical energy and electric energy. The battery cell 20 may include walls 201, 202, 203, 204, an electrode assembly, and a post 205. The walls 201, 202, 203, 204 may be enclosed as a case, thereby forming an internal environment of the battery cell 20 in which the electrode assembly, electrolyte, etc. are contained. One or more electrode assemblies can be stacked, and two connecting parts are formed on each electrode assembly and are connected with the pole 205 through the adapter. The electrode assembly may include a positive electrode sheet, a negative electrode sheet, and a separator. The electrode assembly may be a wound structure formed by winding a positive electrode sheet, a separator, and a negative electrode sheet, or a stacked structure formed by stacking a positive electrode sheet, a separator, and a negative electrode sheet. The electrode assembly comprises a positive electrode tab and a negative electrode tab, wherein the positive electrode current collector without the positive electrode active material layer in the positive electrode sheet can be used as the positive electrode tab, and the negative electrode current collector without the negative electrode active material layer in the negative electrode sheet can be used as the negative electrode tab. The electrode posts 205 are used to electrically connect with the electrode assembly for outputting or inputting electric power from the battery cells 20. The pole 205 may be provided on one or more walls. For example, both poles 205 are provided on the second wall 202. The battery cell 20 may also be provided with a pressure relief structure 206 for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. For example, the relief structure 206 may be located on the second wall 202 where the poles 205 are located, between the two poles 205.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a portion of a battery 200 according to some embodiments of the present application, and fig. 5 is a schematic structural diagram of an insulating heat conductive member 30 according to some embodiments of the present application. In the embodiment of the present application, the battery 200 includes a plurality of battery cells 20 and at least one insulating and heat conductive member 30. The plurality of battery cells 20 are disposed in sequence along a first direction, each battery cell 20 having two first walls 201 disposed opposite along the first direction and at least one second wall 202 extending between the two first walls 201, respectively, each battery cell 20 including at least one post 205 disposed on the at least one second wall 201. The at least one insulating and heat conducting member 30 includes a body portion 301 disposed between the first walls 201 of two battery cells 20 adjacent in the first direction, and at least one extension portion 302 extending from the body portion 301. The at least one extension 302 extends toward the at least one pole 205 in close proximity and/or contact with the at least one second wall 202 along a first direction at least partially.

The first direction means the arrangement direction of the battery cells 20 in the same column. The first direction may generally correspond to a large-area normal of the battery cell 20.

The first wall 201, the second wall 202 of the battery cell 20 means a planar structure for enclosing a part of the housing of the battery cell 20. The two first walls 201 being disposed opposite each other along the first direction means that two battery cells 20 adjacent along the first direction face each other with the respective first walls 201. The second wall 202 extending between the two first walls 201 means belonging to a lateral wall extending along the first direction.

One second wall 202 may include two poles 205, or two second walls 202 may each include one pole 205.

The insulating and heat conducting member 30 means a structure that provides heat transfer but is electrically insulating.

The main body portion 301 of the insulating and heat-conducting member 30 serves to separate two battery cells 20 adjacent in the first direction. The body portion 301 may be in the form of a sheet or plate. The body portion 301 may have a size generally corresponding to the first wall 201 of the battery cell 20, e.g., a size transverse to the first direction, such that a space between two battery cells 20 adjacent along the first direction is substantially occupied by the body portion 301. The body portion 301 is in contact with the battery cell 20, and particularly the first wall 201.

The extension 302 extending from the body 301 means that the two are not structurally disconnected and are thermally conductive.

Extending the extension portion 302 at least partially in the first direction immediately adjacent and/or in contact with the second wall 202 towards the pole 205 means that there is a section in the area of the second wall 202 that is generally directed towards the pole 205 and is closer to the pole 205 than the main body portion 301. The close proximity and/or contact of the extension 302 with the second wall 202 means that the extension 302 is substantially at a level comparable to the pole 205, taking into account the extent of protrusion of the pole 205 from the second wall 202.

Alternatively, the extension 302 may extend at least partially across the pole 205 along the first direction. Of course, the extension along the first direction is not greater than the dimension along the first direction of its location proximate and/or contacting the second wall 202.

Optionally, an extension 302 extends from the side of the body portion 301 facing the at least one second wall 202.

The battery 200 provided by the embodiment of the application is beneficial to realizing heat dispersion and dissipation in a severe heat generation area by providing the extension portion 302 for heat transfer closer to the pole 205, and conducting the heat to the main body portion 301 with a generally larger area and possibly to the cooling member, thereby improving the heat diffusion effect of the battery cell.

According to some embodiments of the application, the at least one extension 302 at least partially surrounds the at least one pole 205.

The extension 302 at least partially surrounds the pole 205 means that the extension 302 extends further along the periphery of the pole 205 from one or both sides.

By providing the extension 302 with a larger section proximate the pole 205, the channeling of heat at the pole 205 is more effectively accomplished.

According to some embodiments of the application, the at least one extension 302 at least partially contacts the at least one pole 205.

By extension 302 at least partially contacting pole 205 is meant that extension 302 extends to form a heat transfer engagement interface with at least a portion of pole 205.

By providing the extension 302 with a contact interface with the pole 205, both can be directly thermally conductive in addition to convective and radiative heat transfer, more efficient conduction of the heat of the pole 205 itself is achieved.

According to some embodiments of the application, the at least one extension 302 comprises a hole 303, the at least one pole 205 being positioned in the hole 303.

The hole 303 means that the opening in the extension 302 is delimited by the surrounding solid body. Positioning the pole 205 in the hole 303 means that the pole 205 is completely surrounded by the extension 302.

Alternatively, the aperture 303 may be positioned, shaped, and sized such that at least a portion, e.g., a majority, and particularly substantially the entire, of the perimeter of the pole 205 is in contact with the extension 302. In other words, the hole 303 is complementary to the post 205. For example, fig. 3, 4 show a cylindrical pole 205 and fig. 5 shows a complementary circular hole 303. Other shapes are also contemplated, such as rectangular, rounded rectangular, etc.

By providing the extension 302 with the hole 303 for receiving the pole 205, guiding of heat at the pole 205 is more effectively achieved and positioning and mounting of the insulating and heat conducting member 30 with respect to the battery cell 20 is also facilitated.

According to some embodiments of the present application, battery 200 includes cooling member 40. The plurality of battery cells 20 face the cooling member 40 through a third wall 204 or 203, which extends between the two first walls 201 and is different from the at least one second wall 202, and the body portion 301 of the at least one insulating and heat conductive member 30 is connected with the cooling member 40 on the side facing the third wall 204 or 203.

The cooling member 40 means a structure for providing cooling heat exchange, for example, in a plate shape. The cooling member 40 may have a cavity and/or channel therein for receiving a heat exchange medium. The cooling member 40 may be externally provided with ports for circulating a heat exchange medium.

The third wall 204 or 203 extending between the two first walls 201 is meant to belong to a lateral wall extending along the first direction. The third wall 204 or 203 being different from the second wall 202 means that the third wall 204 or 203 is not provided with a pole 205 and further is not provided with a pressure relief structure 206. The third wall 204 is opposite the second wall 202. Wall 203 is adjacent to second wall 202.

The third walls 204 or 203 of the plurality of battery cells 20 facing the cooling member 40 means that the cooling member 40 is disposed at the lateral side where the third walls 204 or 203 are located and extends in the first direction. The third wall 204 or 203 and the cooling member 40 may be in contact directly or indirectly (e.g., via an insulating thermally conductive gasket).

The connection of the body portion 301 with the cooling member 40 on the side facing the third wall 204 or 203 means that there is a robust continuous heat flow path for both. The heat received by the body portion 301 from the first wall 201 and the heat received from the extension portion 302 can be conducted to the cooling member 40.

By providing the cooling member 40, it is advantageous to accelerate heat release, and to alleviate the internal temperature of the battery 200 from being excessively high.

According to some embodiments of the application, the at least one second wall 202 is a single second wall 202, the at least one pole 205 is two poles 205 spaced apart along a second direction intersecting the first direction, the at least one insulating and thermally conductive member 30 comprises two extension portions 302 spaced apart along the second direction, the two extension portions 302 extending towards the same side of the body portion 301 relative to the first direction.

The above-described arrangement of walls and poles means that both poles 205 are on the same second wall 202. Such a second wall 202 may be provided with a pressure relief structure 206, which may be positioned between two poles 205. Such a second wall 202 may generally be an end cap of the battery cell 20.

The two extension portions 302 are spaced apart along the second direction so as to be disposed in correspondence with the two poles 205. The two extension portions 302 extend toward the same side of the main body portion 301 with respect to the first direction such that the two extension portions 302 extend toward the two poles 205 of the same battery cell 20. As shown in fig. 5, each extension 302 may include a hole 303 to enclose and/or contact each post 205 of the same cell 20.

By the specific arrangement of the walls and posts and the consistent extension orientation of the extensions, a simple, compact structural design of the battery 200 is facilitated, facilitating processing and assembly.

According to some embodiments of the application, the two extension portions 302 of the at least one insulating and heat conducting member 30 extend from the body portion 301 independently of each other.

The two extension portions 302 extending from the body portion 301 being independent of each other means that other than communication via the body portion 301, there are no other connection portions between the two extension portions 302, in particular other connection portions immediately adjacent and/or in contact with the second wall 202. For example, when extending from the side of the body portion 301 facing the second wall 202, the two extension portions 302 extend from different positions of the side on which the insulating and heat conducting member 30 may not include other portions beyond the first wall 201 than the two extension portions 302.

By providing the insulating and thermally conductive member 30 with two extensions 302 that are independent of each other, the heat guiding can be concentrated mainly in the pole 205 and its neighborhood, and the coverage of the area of the second wall 202 that needs to be fully exposed, such as the possible pressure relief structure 206, can be reduced.

According to some embodiments of the application, a pressure relief structure 206 is provided to the second wall 202 between two poles 205 spaced apart along the second direction, the two extension portions 302 of the at least one insulating and thermally conductive member 30 being located away from the pressure relief structure 206.

The pressure relief structure 206 is operative to relieve the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The extension 302 being remote from the pressure relief structure 206 means that the pressure relief structure 206 and the area of the second wall 202 surrounding it are not obscured or contacted by the extension 302.

By providing the extension 302 of the insulating and thermally conductive member 30 sufficiently clear of the pressure relief structure 206, the impact on the operation of the pressure relief structure 206 can be reduced, as well as the probability of masking the response to the temperature reaching the threshold due to direct heat dissipation by the pressure relief structure 206.

When the insulating and heat-conducting member 30 shown in fig. 5 is applied between the battery cells 20 shown in fig. 4 in the orientation shown, the previous battery cell 20 of two battery cells 20 adjacent in the first direction will be provided with the extension 302, except for the last battery cell 20. According to some embodiments of the application, the battery 200 comprises an end insulating and heat conducting member 30, the end insulating and heat conducting member 30 being identically constructed to the at least one insulating and heat conducting member 30, the end insulating and heat conducting member 30 being arranged at the first wall 201 of the last battery cell 20 along the same opposite orientation with respect to the opposite orientation of the same side of the body portion 301 with respect to the first direction.

The end insulating heat conducting member 30 being configured identically to the at least one insulating heat conducting member 30 means that the end insulating heat conducting member 30 has the same structure, size and connection as the at least one insulating heat conducting member 30.

The placement of the end insulating and thermally conductive member 30 at the first wall 201 of the last cell 20 in this opposite orientation means that only one side of the body portion 301 of the end insulating and thermally conductive member 30 with respect to the first direction will abut the first wall 201, while the other side with respect to the first direction may be exposed or engaged by an end plate disposed at that side.

By providing the same end insulating heat conducting member 30 as the insulating heat conducting member 30 between two adjacent battery cells 20 along the first direction, the heat conduction at the post 205 is easily provided for the last battery cell 20, and the size of the assembly formed by each battery cell 20 and each insulating heat conducting member 30 along the first direction is not excessively increased.

According to some embodiments of the application, the at least one second wall 202 is a single second wall 202, and the third wall 204 is opposite the second wall 202.

The third wall 204 being opposite the second wall 202 means that the pole 205 and possibly the relief structure 206 and the cooling member 40 will be positioned opposite each other across the battery cell 20.

By providing the posts 205 of the battery cells 20 and possibly the relief structures 206 on the opposite wall of the side of the cooling member 40, a decentralized arrangement of the individual components is achieved, which is advantageous for simplifying the structure of the individual components and for providing installation space for other components, such as the bus bar components.

According to some embodiments of the application, the battery 200 comprises a bus member for electrically connecting the one or more poles 205, the at least one extension 302 being in contact with the bus member through at least one section thereof facing away from the at least one second wall 202.

The bus bar members may be used to connect one or more of the poles 205 in parallel, in series, or in series and may be disposed on the side where the poles 205 are located.

The contact of at least one section of the extension 302 facing away from the second wall 202 with the bus bar member means that there is a heat transfer engagement interface of the extension 302 with the bus bar member along the outer surface of the normal to the second wall 202.

By providing the extension 302 with a contact interface with the bus member, both can directly conduct heat in addition to heat transfer by convection and radiation, and also achieve guiding of heat of the bus member through the insulating heat conducting member 30.

According to some embodiments of the application, each insulated heat conducting member 30 is formed by a single sheet member such that all extension portions 302 of each insulated heat conducting member 30 are bent and/or folded by portions of the single sheet member to form a continuous portion at an angle to the body portion 301.

By single sheet member is meant that each insulating and thermally conductive member 30 is a continuous integral piece that may be substantially flat prior to being partially bent and/or bent to shape. Extension 302 is angled with respect to body portion 301 and may be generally L-shaped. Thus, the extension 302 is in the form of a ledge extending substantially coplanar with the body portion 301 prior to the partial bending and/or bending deformation. Two spaced apart extensions 302 correspond to two spaced apart lugs. The two lugs may extend from the body portion 301 independently of each other. The body portion 301 with lugs may be obtained by cutting from a larger sheet material. Bending and/or kinking means that there may be a rounded and/or non-rounded transition, e.g. with a crease, at the deformation site between the extension portion 302 and the body portion 301.

By constructing the body portion 301 and the extension portion 302 in a single sheet member that is partially bent and/or folded, a low profile design of the battery insulating and thermally conductive member 30 is facilitated and also possible thermal resistance at the junction of the discrete portions is mitigated.

Referring to fig. 6, fig. 6 is a schematic cross-sectional view taken through line A-A of fig. 5, according to some embodiments of the present application. According to some embodiments of the present application, each of the insulating and heat conducting members 30 forms a layered structure including a base layer 31 and outer layers 32 located on both sides of the base layer 31, the base layer 31 including a reinforcing material, each outer layer 32 including a silicone rubber or a silicone resin filled with a heat conducting filler.

In use, the corresponding portions of the outer layer 32 will face the first wall 201, the second wall 202, and possibly the converging means.

The filler thermally conductive filler is used to promote heat exchange and may include alumina, boron nitride, aluminum nitride, etc., which may be in the form of powder or particles.

The reinforcing material is used to form a strength substrate of a layered structure and may include glass cloth, non-woven fabric, polyimide film, and the like.

Alternatively, the outer layer 32 may be provided with self-adhesion so as to be in direct adhesive contact with the facing portion to be heat-conducted.

By providing the insulating and heat conducting member 30 of a specific sandwich structure, the double-sided heat conducting capability and durability of the overall construction are enhanced.

The embodiment of the application also provides electric equipment, which comprises the battery 200.

By having the features of the present application, the provided powered device may obtain the benefits described with respect to battery 200.

The structure of some embodiments of the present application will be described below with reference to fig. 4 to 6:

In the battery heat dissipation structure of the battery 200 provided, an insulating heat conduction member 30 (insulating heat conduction plate) is provided between each two battery cells 20. Considering the temperature rise at the pole 205 of the battery cell 20, the upper end (lug) of the insulating and heat conducting member 30 (insulating and heat conducting plate) is bent into an L shape toward the pole 205 to be in contact with the pole 205, thereby realizing not only a large surface of the battery 20, but also heat conduction at the pole 205, improving the temperature drop in a severe heat-generating region, thereby realizing improved performance in use of the battery 200, and reducing the failure of the battery 200 or the battery cell 20 therein.

The insulating and heat conducting component 30 is of a sandwich structure, and a silicon rubber/silicon resin filled heat conducting material (aluminum oxide, boron nitride, aluminum nitride and the like) is arranged on the outer layer, and a glass fiber cloth or other base material is arranged on the inner layer.

The insulating and heat conducting member 30 is simultaneously physically connected to the cooling member 40 (liquid cooling plate) located on the opposite side of the pole 205, and timely conducts the heat of the system.

The insulating and heat conducting member 30 may also be in contact with a bus member for electrically connecting one or more battery cells 20.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A battery (200), characterized in that the battery (200) comprises:

-a plurality of battery cells (20), the plurality of battery cells (20) being arranged in sequence along a first direction, each battery cell (20) having two first walls (201) arranged opposite along the first direction and at least one second wall (202) extending between the two first walls (201), respectively, each battery cell (20) comprising at least one post (205) arranged on the at least one second wall (202);

At least one insulating and heat conducting member (30), the at least one insulating and heat conducting member (30) comprising a body portion (301) arranged between first walls (201) of two battery cells (20) adjacent along the first direction and at least one extension portion (302) extending from the body portion (301), the at least one extension portion (302) extending towards the at least one pole (205) at least partially in close proximity and/or in contact with the at least one second wall (202) along the first direction.

2. The battery (200) of claim 1, wherein the at least one extension (302) at least partially surrounds the at least one post (205).

3. The battery (200) according to claim 1 or 2, wherein the at least one extension (302) at least partially contacts the at least one post (205).

4. The battery (200) according to claim 1 or 2, wherein the at least one extension (302) comprises a hole (303), the at least one post (205) being positioned in the hole (303).

5. The battery (200) according to claim 1 or 2, wherein the battery (200) comprises a cooling member (40), the plurality of battery cells (20) facing the cooling member (40) through a third wall extending between the two first walls (201) different from the at least one second wall (202), the body portion (301) of the at least one insulating heat conducting member (30) being connected with the cooling member (40) on a side facing the third wall.

6. The battery (200) according to claim 1 or 2, wherein the at least one second wall (202) is a single second wall (202), the at least one post (205) is two posts (205) spaced apart along a second direction intersecting the first direction, the at least one insulating and thermally conductive member (30) comprises two extension portions (302) spaced apart along the second direction, the two extension portions (302) extending towards the same side of the body portion (301) relative to the first direction.

7. The battery (200) according to claim 6, wherein the two extension portions (302) of the at least one insulating and thermally conductive member (30) extend from the main body portion (301) independently of each other.

8. The battery (200) of claim 6, wherein a pressure relief structure (206) is provided to the second wall (202) between the two posts (205) spaced apart along the second direction, the two extensions (302) of the at least one insulating, thermally conductive member (30) being positioned away from the pressure relief structure (206).

9. The battery (200) according to claim 6, wherein the battery (200) comprises an end insulating heat conducting member (30), the end insulating heat conducting member (30) being identically configured to the at least one insulating heat conducting member (30), the end insulating heat conducting member (30) being arranged at the first wall (201) of the last cell (20) along the same opposite orientation with respect to the opposite orientation of the same side of the main body portion (301) with respect to the first direction.

10. The battery (200) of claim 5, wherein the at least one second wall (202) is a single second wall (202), the third wall (204) being opposite the second wall (202).

11. The battery (200) according to claim 1 or 2, characterized in that the battery (200) comprises a bus member for electrically connecting one or more poles (205), with which the at least one extension (302) is in contact by at least one section thereof facing away from the at least one second wall (202).

12. The battery (200) according to claim 1 or 2, wherein each insulating and heat conducting member (30) is formed by a single sheet member such that all extension portions (302) of each insulating and heat conducting member (30) are bent and/or folded by portions of the single sheet member to form a continuous portion at an angle to the main body portion (301).

13. The battery (200) according to claim 1 or 2, wherein each insulating and heat conducting member (30) forms a layered structure comprising a base layer (31) and outer layers (32) located on both sides of the base layer (31), the base layer (31) comprising a reinforcing material, each outer layer (32) comprising a silicone rubber or a silicone resin filled with a heat conducting filler.

14. A powered device, characterized in that it comprises a battery (200) according to any one of claims 1 to 13.