CN217158581U

CN217158581U - Battery and electric equipment

Info

Publication number: CN217158581U
Application number: CN202221539620.9U
Authority: CN
Inventors: 郭海建; 蔡秋红; 黄小腾; 侯跃攀; 宋飞亭; 胡利军
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-08-09
Anticipated expiration: 2032-06-20

Abstract

The application provides a battery and consumer relates to battery technical field. The battery comprises a battery cell and a heat management component, wherein the heat management component is used for exchanging heat with the battery cell; the surface of the heat management component is provided with an insulating piece, and the insulating piece is used for insulating and isolating the battery cells and the heat management component. The surface of the heat management part is provided with the insulating part, and under the condition that an insulating structure is not arranged on the surface of a single battery or a blue film on the surface of the single battery is damaged or water vapor in the battery is condensed on the surface of the heat management part, the insulating part arranged on the surface of the heat management part can play an insulating role between the single battery and the heat management part, so that the risk of short circuit of the battery is reduced, and the safety performance of the battery is improved.

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

Secondary batteries, such as lithium ion batteries, sodium ion batteries, solid state batteries, and the like, have outstanding advantages of high energy density, good cycle performance, and the like, and are widely used in the fields of portable electronic devices, electric vehicles, electric tools, unmanned aerial vehicles, energy storage devices, and the like. The safety problem of the battery is one of the main concerns of the user and is also one of the main factors restricting the development of the battery. Therefore, how to improve the safety performance of the battery becomes a problem to be solved urgently in the field of batteries.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery and electric equipment, so that the safety performance of the battery is improved.

In a first aspect, an embodiment of the present application provides a battery, where the battery includes a battery cell and a thermal management component, where the thermal management component is configured to exchange heat with the battery cell; wherein, the surface of thermal management part is provided with the insulating part, and the insulating part is used for insulating isolation battery monomer and thermal management part.

According to the technical scheme, the surface of the heat management component is provided with the insulating piece, the insulating structure is not arranged on the surface of the battery or the blue film on the surface of the battery is damaged or the water vapor in the battery is condensed on the surface of the heat management component, the insulating piece arranged on the surface of the heat management component can play an insulating role between the battery and the heat management component, the risk of short circuit of the battery is reduced, and therefore the safety performance of the battery is improved.

In some embodiments of the first aspect of the present application, the thermal conductivity λ of the insulator is 0.1W/(m.K).

In the technical scheme, the lambda of the insulating part is more than or equal to 0.1W/(m.K), so that the insulating part has better heat conducting property, the battery cell and the heat management component have better heat conducting capacity, and the heat exchange efficiency between the battery cell and the heat management component is improved.

In some embodiments of the first aspect of the present application, the density G of the insulator is ≦ 1.5G/cm ³ 。

In the technical scheme, the density G of the insulating part is less than or equal to 1.5G/cm ³ The insulating part is arranged in the battery, the size of the insulating part is unchanged, and the insulating part can meet the insulating requirement, so that the weight of the insulating part is smaller, the influence of the arrangement of the insulating part on the weight of the battery is reduced, and the lightweight of the battery is facilitated.

In some embodiments of the first aspect of the present application, the compressive strength P of the insulator satisfies 0.01MPa P200 MPa.

Among the above-mentioned technical scheme, the compressive strength P of insulating part satisfies that 0.01MPa is less than or equal to P is less than or equal to 200MPa, can be so that the insulating part has certain elasticity, can be so that the insulating part can be through the deformation of self when battery monomer expansion deformation in order to reduce the holistic influence of battery, perhaps, has elastic insulating part and can also play the cushioning effect through the deformation of self when the battery stands the impact, plays certain guard action to battery monomer, improves the security of battery.

In some embodiments of the first aspect of the present application, the material of the insulating member includes at least one of polyethylene terephthalate, polyimide, and polycarbonate.

In the technical scheme, the polyethylene terephthalate, the polyimide and the polycarbonate have the advantages of good impact strength, good heat-resistant aging resistance and the like.

In some embodiments of the first aspect of the present application, the thermal management component comprises a thermal conditioning tube for containing a fluid medium and for exchanging heat with the battery cell, the insulator further comprising a first insulator, at least a portion of the first insulator being disposed between the thermal conditioning tube and the battery cell.

Among the above-mentioned technical scheme, the thermal control pipe is used for holding fluid medium, and fluid medium flows in the thermal control pipe, can give the free heat of battery or take away the free heat of battery with the heat transfer of self to adjust the free temperature of battery, the temperature regulation mode is simple, high-efficient, and at least part of first insulating part sets up between thermal control pipe and battery monomer, can carry out the insulating isolation both when heat exchange pipe and battery monomer carry out the heat exchange, improves the security of battery.

In some embodiments of the first aspect of the present application, the first insulator has a thickness h ₁ Wall thickness of the thermo-regulating tube is h ₂ ，h ₁ /h ₂ ≤0.5。

In the above technical scheme, when h is ₁ /h ₂ When less than or equal to 0.5, the thermal resistance of the whole structure formed by the insulating part and the pipe wall of the thermal regulating pipe cannot be too large, so that higher heat exchange efficiency between the single battery and the fluid medium in the thermal regulating pipe is ensured, the occupancy rate of the first insulating part to the internal volume of the battery can be reduced, and more spaces are used for improving the energy density of the whole battery.

In some embodiments of the first aspect of the present application, the first insulator has a thickness h ₁ Wall thickness of the thermo-regulating tube is h ₂ ，h ₁ /h ₂ ≥0.00625。

In the above technical scheme, h ₁ /h ₂ Not less than 0.00625, the creepage distance between the heat exchange tube and the battery monomer is larger, the safety is higher, and in some technical schemes that the first insulating member is elastic, the first insulating member can enable the heat exchange tube and the battery monomer to be separated by a larger distance even if the first insulating member is compressed and deformed, so that the risk of electric contact between the heat exchange tube and the battery monomer under various use scenes is reduced.

In some embodiments of the first aspect of the present application, the interior of the heat regulating tube is provided with a partition for partitioning the interior of the heat regulating tube into a plurality of flow passages.

Among the above-mentioned technical scheme, the inside of separator with the thermal control pipe is separated and is formed a plurality of runners, is convenient for control fluid medium according to actual need in the inside distribution of thermal control pipe to rationally adjust the free temperature of battery.

In some embodiments of the first aspect of the present application, the thermal management component further includes a manifold, the manifold including a manifold chamber, the manifold chamber in communication with the plurality of flow channels, the insulator further including a second insulator, at least a portion of the second insulator disposed between the manifold and the battery cells.

Among the above-mentioned technical scheme, the collecting pipe communicates with a plurality of runners, and the collecting pipe can set up the import department and/or the exit at a plurality of runners, and the collecting pipe can be used for carrying out the runner distribution to heat transfer medium in the import department of a plurality of runners, also can be used for being used for compiling in the exit of a plurality of runners, and at least part of second insulator sets up between collecting pipe and battery monomer to carry out insulating isolation to collecting pipe and battery monomer, in order to improve the holistic security of battery.

In some embodiments of the first aspect of the present application, a second insulator covers at least a portion of an outer surface of the manifold to insulate and isolate the cells from the manifold.

Among the above-mentioned technical scheme, the second insulator covers the at least partial surface of collector pipe, and the second insulator can cover the surface of collector pipe completely, also can only cover the collector pipe towards the free side surface of battery, and the second insulator can be used for insulating isolation collector pipe and battery monomer to reduce the risk of battery short circuit, improve the security performance of battery.

In some embodiments of the first aspect of the present application, the second insulator has a thickness h ₃ Wall thickness of the thermo-regulating tube is h ₂ ，h ₃ /h ₂ ≥0.00625。

In the above technical scheme, h ₃ /h ₂ Not less than 0.00625, the larger the creepage distance between the collecting pipe and the single battery is, the higher the safety is, thereby reducing the difference between the collecting pipe and the single batteryThe risk of making electrical contact in the use scenario.

In some embodiments of the first aspect of the present application, the battery cells are plural and arranged in a predetermined direction, and the thermal management member is interposed between two adjacent battery cells.

Among the above-mentioned technical scheme, predetermine the direction and can be for free thickness direction of battery, length direction etc. heat management part inserts and locates two adjacent battery monomers, and heat management part can carry out the heat exchange with the battery monomer of both sides simultaneously, can improve the efficiency of heat exchange.

In a second aspect, an embodiment of the present application provides an electric device, including the battery provided in the first aspect.

Among the above-mentioned technical scheme, the battery security performance that the embodiment of the first aspect provided is better, and the consumer can improve the power consumption safety through the battery power supply that the embodiment of the first aspect provided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

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

fig. 2 is an exploded view of a battery provided in accordance with some embodiments of the present application;

fig. 3 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

FIG. 4 is an isometric view of a thermal management component provided by some embodiments of the present application;

FIG. 5 is a cross-sectional view of a thermal management component provided by some embodiments of the present application;

FIG. 6 is an enlarged view of the present application at A in FIG. 5;

FIG. 7 is a cross-sectional view of a thermal management component with a partition disposed therein according to some embodiments of the present application;

FIG. 8 is an enlarged view at B in FIG. 5;

FIG. 9 is an enlarged view at C of FIG. 5;

FIG. 10 is a cross-sectional view of a thermal management component according to other embodiments of the present application;

FIG. 11 is an enlarged view taken at D of FIG. 10;

fig. 12 is an enlarged view at E in fig. 10.

Icon: 1000-a vehicle; 100-a battery; 10-a box body; 11-a first part; 12-a second part; 20-a battery cell; 30-a thermal management component; 31-a thermo regulating tube; 32-a separator; 33-a flow channel; 34-a collector pipe; 34 a-a confluence chamber; 341-first bus bar; 3411-a first manifold chamber; 3412-a media inlet; 342-a second bus bar; 3421-second manifold chamber; 3422-media outlet; 36-a first draft tube; 361-a first limiting part; 37-a second draft tube; 371-second limiting part; 40-an insulator; 40 a-a first insulator; 40 b-a second insulator; 40 c-a third insulator; 200-a controller; 300-a motor; x-a first direction; y-a second direction; z-third direction.

Detailed Description

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

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

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

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

At present, the application of the power battery is more and more extensive 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 and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The battery comprises a box body and a plurality of battery monomers, wherein the battery monomers are contained in the box body, the battery monomers are connected in series, in parallel or in series-parallel, and the series-parallel refers to the series connection and the parallel connection of the battery monomers. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers is accommodated in the box body. In order to reduce the risk of short circuit in the battery, the surface of the battery monomer is provided with a blue film, and the blue film is coated on the outer surface of the battery monomer shell, so that the contact of the adjacent battery monomer shells or the contact of the battery monomer shells and a box body is avoided to cause short circuit.

The inventors have noticed that the blue film on the surface of the battery cell is easily broken as the battery is used, and in case of breakage of the blue film, insulation failure occurs between adjacent battery cells and between the battery cell and the case, and the risk of short circuit of the battery increases.

In addition, in order to adjust the temperature of the battery monomers, a water cooling plate or a heating plate is arranged between the adjacent battery monomers, the surface of the water cooling plate or the surface of the heating plate is not insulated and protected, water vapor in the battery is easily liquefied on the surface of the water cooling plate or the surface of the heating plate, and the risk of short circuit of the battery is further increased under the condition that a blue membrane is damaged.

In view of the above, in order to alleviate the problem of short circuit of the battery due to breakage of the blue film, the inventors have conducted extensive studies to design a battery including a battery cell and a thermal management member for exchanging heat with the battery cell, a surface of the thermal management member being provided with an insulator, which may serve to insulate and separate the battery cell and the thermal management member.

The insulating part is arranged on the surface of the heat management component, the insulating part is not easily damaged by the expansion of the appearance of the battery cell or self-heating, when the water vapor in the battery is liquefied on the surface of the heat management component under the condition that the surface of the battery cell is not arranged or the blue film on the surface of the battery cell is damaged, the insulating part arranged on the surface of the heat management component can play an insulating role between the battery cell and the heat management component, and the risk of short circuit of the battery is reduced.

The battery disclosed in the embodiment of the application can be used in electric equipment such as vehicles, ships or aircrafts but not limited thereto, and can also be used for forming a power supply system of the electric equipment by the battery disclosed in the application, so that the problem that the battery is short-circuited due to the fact that a blue film of a battery monomer is damaged or water vapor is liquefied on the surface of a heat management component is favorably solved, and the electricity utilization safety of the electric equipment is improved.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments are described by taking an electric device as a vehicle according to an embodiment of the present application as an example.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 20 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

As shown in fig. 3 to 6, in some embodiments, the battery 100 includes a battery cell 20 and a thermal management member 30, the thermal management member 30 being disposed at one side of the battery cell 20, the thermal management member 30 being used to regulate the temperature of the battery cell 20; wherein, the surface of the thermal management component 30 is provided with an insulating member 40, and the insulating member 40 is used for insulating and isolating the battery cell 20 and the thermal management component 30.

The thermal management member 30 is a structure that exchanges heat with the battery cell 20, such as a heating resistance wire, a heat conducting member that is filled with a heat exchange medium, and some materials that can chemically react to generate a temperature change according to a change in an environment. Heat exchange with the battery cell 20 is achieved by temperature changes of the thermal management member 30 itself. In this case, if the temperature of the thermal management component 30 is lower than the temperature of the battery cell 20, the thermal management component 30 may cool the battery cell 20, so as to avoid thermal runaway due to an excessively high temperature of the battery cell 20; if the temperature of the thermal management component 30 is higher than the temperature of the battery cell 20, the thermal management component 30 may heat the battery cell 20 to ensure that the battery 100 can work normally.

The thermal management member 30 may also be a structure capable of accommodating a fluid medium, and heat is transferred between the battery cell 20 and the fluid medium through the thermal management member 30 and the insulating member 40, thereby achieving heat exchange between the battery cell 20 and the fluid medium. The fluid medium may be a liquid (e.g., water), a gas (e.g., air). In this case, if the temperature of the fluid medium contained in the thermal management component 30 is lower than the temperature of the battery cell 20, the thermal management component 30 may cool the battery cell 20, so as to avoid thermal runaway due to an excessively high temperature of the battery cell 20; if the temperature of the fluid medium contained in the thermal management component 30 is higher than the temperature of the battery cell 20, the thermal management component 30 may heat the battery cell 20 to ensure that the battery 100 can operate normally.

The insulating member 40 is attached to a surface of the thermal management member 30 such that the insulating member 40 can cover a part of or the entire surface of the thermal management member 30.

The number of the battery cells 20 may be one or more. Wherein, a plurality is two or more.

In an embodiment in which the battery cell 20 is one, the thermal management member 30 may be disposed at one side of the battery cell 20 between the battery cell 20 and the inner wall of the case 10. In some embodiments, the insulator 40 may only insulate and isolate the battery cell 20 and the thermal management member 30. In other embodiments, the insulating member 40 may insulate and isolate the battery cell 20 and the thermal management member 30, and may also insulate and isolate the thermal management member 30 and the inner wall of the case 10, so as to further reduce the risk of short circuit of the battery 100, and further improve the safety of the battery 100.

In the embodiment in which the battery cell 20 is plural, the plural battery cells 20 are stacked in a certain direction (third direction Z). A thermal management member 30 may be disposed between adjacent two battery cells 20. The insulating member 40 disposed on the thermal management member 30 between the adjacent two battery cells 20 may simultaneously insulate and separate the two battery cells 20 and the thermal management member 30. Along the stacking direction of a plurality of battery cells 20, a thermal management component 30 may also be disposed between the two battery cells 20 located at the extreme end and the inner wall of the case 10, and an insulating member 40 connected to the thermal management component 30 may only insulate and isolate the battery cells 20 from the thermal management component 30, of course, the insulating member 40 connected to the thermal management component 30 may insulate and isolate both the battery cells 20 from the thermal management component 30 and the inner wall of the thermal management component 30 from the inner wall of the case 10, so as to further reduce the risk of short circuit of the battery 100, and further improve the safety of the battery 100.

The surface of the thermal management member 30 is provided with the insulating member 40, and in the case that no insulating structure is provided on the surface of the battery cell 20, or the blue film on the surface of the battery cell 20 is broken, or the water vapor inside the battery 100 is liquefied on the surface of the thermal management member 30, the insulating member 40 provided on the surface of the thermal management member 30 can play an insulating role between the battery cell 20 and the thermal management member 30, thereby reducing the risk of short circuit of the battery 100, and improving the safety performance of the battery 100.

Since the insulating member 40 serves as an insulator between the thermal management member 30 and the battery cell 20, the insulating member 40 may have a good thermal conductivity in some embodiments, so that the insulating member 40 can serve to transfer heat. Thus, in some embodiments, the thermal conductivity λ ≧ 0.1W/(m.K) of the insulator 40.

The thermal conductivity is the heat transferred in watts per meter-degree (W/(m.K), where K can be replaced by C), in 1 hour through a 1-square meter area of 1 degree temperature (K, DEG C) for a 1-meter thick material under stable heat transfer conditions.

Lambda of the insulating member 40 is greater than or equal to 0.1W/(m.K), so that the insulating member 40 has good heat conduction performance, the battery cell 20 and the heat management component 30 have good heat conduction capacity, and the heat exchange efficiency between the battery cell 20 and the heat management component 30 is improved.

In some embodiments, the density G of the insulator 40 is less than or equal to 1.5G/cm ³ 。

Providing the insulating member 40 on the surface of the thermal management member 30 increases the weight of the battery 100. The lower the density of the insulator 40, the lower the mass of the insulator 40, and the higher the density of the insulator 40, the higher the mass of the insulator 40. Insulation boardThe density G of the edge piece 40 is less than or equal to 1.5G/cm ³ The weight of the insulating member 40 is reduced, so that the weight of the battery 100 is reduced, the influence of the arrangement of the insulating member 40 on the weight of the battery 100 is reduced, and the weight reduction of the battery 100 is facilitated.

In some embodiments, the compressive strength P of the insulator 40 satisfies 0.01MPa P200 MPa.

Compressive strength refers to the maximum compressive stress that a specimen will experience until it breaks or yields in a compression test.

The compressive strength P of the insulating part 40 satisfies that P is less than or equal to 200MPa and less than or equal to 0.01MPa, so that the insulating part 40 has certain elasticity, the insulating part 40 can reduce the influence on the whole battery 100 through self deformation when the battery cell 20 is subjected to expansion deformation, or the insulating part 40 with elasticity can also play a buffering role through self deformation when the battery 100 is subjected to impact, play a certain protection role on the battery cell 20, and improve the safety of the battery 100.

The material of the insulating member 40 can be selected, for example, in some embodiments, the material of the insulating member 40 includes at least one of polyethylene terephthalate, polyimide, and polycarbonate.

The material of the insulating member 40 may include only one of polyethylene terephthalate, polyimide, and polycarbonate. In other embodiments, the material of the insulating member 40 may include two or three of polyethylene terephthalate, polyimide, and polycarbonate. For example, the insulating member 40 includes a first insulating portion and a second insulating portion, which are stacked, the first insulating portion is made of polyethylene terephthalate, the second insulating portion is made of polyimide, or the first insulating portion is made of polyimide, the second insulating portion is made of polycarbonate, or the first insulating portion is made of polyethylene terephthalate, and the second insulating portion is made of polycarbonate. In still other embodiments, the insulating member 40 includes a first insulating portion, a second insulating portion and a third insulating portion, which are stacked, the first insulating portion is made of polyethylene terephthalate, the second insulating portion is made of polyimide, and the third insulating portion is made of polycarbonate.

The polyethylene terephthalate, the polyimide and the polycarbonate have the advantages of good impact strength, good heat-resisting aging resistance and the like. Therefore, the material of the insulating member 40 includes at least one of polyethylene terephthalate, polyimide, and polycarbonate, and the insulating member 40 has the advantages of good impact strength, good thermal aging resistance, and the like. In addition, the thermal conductivity of the polyethylene terephthalate is generally 0.24W/mK, the thermal conductivity of the polyimide is generally 0.1-0.5W/mK, and the thermal conductivity of the polycarbonate is generally 0.16-0.25W/mK, so that the three materials have good thermal conductivity, and the insulating member 40 is formed by at least one of the three materials, so that the insulating member 40 has good thermal conductivity, and the heat exchange performance and the heat exchange efficiency between the battery cell 20 and the heat management member 30 are improved.

In some embodiments, the battery cell 20 and the thermal management member 30 are connected by an insulator 40.

In other embodiments, the insulation 40 may be connected only to the thermal management component 30.

In this embodiment, the insulating member 40 is connected to both the thermal management member 30 and the battery cell 20, the thermal management member 30 and the insulating member 40 can maintain a relatively stable connection relationship, so that the relative stability of the insulating member 40, the thermal management member 30 and the battery cell 20 is improved, and the risk of insulation failure caused by movement of the insulating member 40 between the thermal management member 30 and the battery cell 20 is reduced.

There are many ways to attach the insulating member 40 to the thermal management component 30, for example, in some embodiments, the insulating member 40 is a coating applied to the surface of the thermal management component 30. That is, the insulation 40 is connected to the thermal management member 30 in a coating manner. In this case, the insulating member 40 may be connected to the battery cell 20 or may not be connected to the battery cell 20. The insulating member 40 is a coating layer coated on the surface of the thermal management component 30, so that the insulating member 40 and the thermal management component 30 can be attached more tightly, the connection stability of the insulating member 40 and the thermal management component 30 is improved, and the risk that the insulating member 40 falls off from the thermal management component 30 is reduced.

For another example, in other embodiments, the insulating member 40 is attached to the thermal management member 30 by an adhesive. The adhesive layer may be a glue layer disposed on the insulation 40 and/or the thermal management member 30. After the adhesive layer bonds the thermal management member 30 and the insulating member 40, the adhesive layer is positioned between the thermal management member 30 and the insulating member 40. In this case, the insulating member 40 may be connected to the battery cell 20 through another adhesive layer, or may not be connected to the battery cell 20. The insulating member 40 and the thermal management member 30 are connected by an adhesive layer in a simple and convenient manner.

For another example, in other embodiments, the insulator 40 is potted between the thermal management member 30 and the battery cell 20. The encapsulation is a process of pouring the liquid compound into a device mechanically or manually and curing the liquid compound into a thermosetting polymer insulating material with excellent performance under normal temperature or heating condition. The insulating member 40 is disposed between the thermal management member 30 and the battery cell 20 by potting, so that the integrity of the overall structure formed by the battery cell 20, the insulating member 40, and the thermal management member 30 can be enhanced, and the resistance to external impact and vibration can be improved.

Referring to fig. 3, 4 and 5 in combination, in some embodiments, the thermal management component 30 includes a thermo-regulating tube 31, the thermo-regulating tube 31 for containing a fluid medium and for exchanging heat with the battery cell 20, the insulator 40 including a first insulator 40a, at least a portion of the first insulator 40a being disposed between the thermo-regulating tube 31 and the battery cell 20.

In an embodiment in which the battery cell 20 is a square-casing battery, the thermal management member 30 may be disposed at one side of the battery cell 20 in the thickness direction. At least a portion of the first insulator 40a covers at least a portion of the outer surface of the thermo-regulating tube 31. At least a portion of the first insulating member 40a may cover only a portion of the outer surface of the thermo-regulating tube 31, such as at least a portion of the first insulating member 40a covers the outer surface of the thermo-regulating tube 31 facing the battery cell 20. At least a portion of the first insulator 40a may cover the entire outer surface of the thermo-regulating tube 31.

In an embodiment in which the battery cell 20 and the thermal management member 30 are connected through the insulating member 40, the battery cell 20 and the thermo-regulating tube 31 may be connected through the first insulating member 40 a.

The thermo-regulating tube 31 contains a fluid medium therein, and heat is transferred between the battery cell 20 and the fluid medium through the thermo-regulating tube 31 and the first insulating member 40 a. If the temperature of the fluid medium contained in the thermal regulating tube 31 is lower than the temperature of the battery cell 20, the thermal management component 30 may cool the battery cell 20, so as to avoid thermal runaway due to an excessively high temperature of the battery cell 20; if the temperature of the fluid medium contained in the thermo-regulating tube 31 is higher than the temperature of the battery cell 20, the thermal management component 30 may heat the battery cell 20 to ensure that the battery 100 can operate normally.

The thermal regulation pipe 31 is used for containing fluid medium, and fluid medium flows in the thermal regulation pipe 31, can give battery monomer 20 (heating battery monomer 20) or take away battery monomer 20's heat (cooling battery monomer 20) with the heat transfer of self to adjust battery monomer 20's temperature, the temperature regulation mode is simple, high-efficient.

As shown in fig. 6, in some embodiments, the first insulator 40a has a thickness h ₁ The wall thickness of the thermo-regulating tube 31 is h ₂ ，h ₁ /h ₂ ≤0.5。

h ₁ /h ₂ And may be 0.01, 0.015, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, etc.

When h is generated ₁ /h ₂ When the heat exchange efficiency is less than or equal to 0.5, the thermal resistance of the integral structure formed by the first insulating part 40a and the pipe wall of the thermal regulating pipe 31 is not too high, so that high heat exchange efficiency between the battery monomer 20 and the fluid medium in the thermal regulating pipe 31 is ensured.

With continued reference to fig. 6, in some embodiments, the first insulating member 40a has a thickness h ₁ The wall thickness of the thermo-regulating tube 31 is h ₂ ，h ₁ /h ₂ ≥0.00625。

In the embodiment where the first insulating member 40a is an elastic member so that the first insulating member 40a has a buffering performance, when the thickness of the first insulating member 40a is too small with respect to the wall thickness of the thermo-regulating pipe 31, the buffering capacity of the first insulating member 40a is limited. The thermo-regulating tube 31 with different wall thicknesses has different requirements on the buffering capacity of the first insulating member 40a, and the greater the thickness of the tube wall of the thermo-regulating tube 31 is, the greater the rigidity is, the more easily the thermo-regulating tube is squeezed by the battery cell 20A large stress is generated to the battery cell 20 and the better the buffering performance of the first insulating member 40a is, the generation of the ground stress can be reduced. Thus, h ₁ /h ₂ Not less than 0.00625. So that the first insulating member 40a has a good buffering performance.

As shown in fig. 7, in some embodiments, a partition 32 is provided inside the thermo-regulating tube 31, and the partition 32 is used to partition the inside of the thermo-regulating tube 31 into a plurality of flow passages 33 arranged in the first direction X.

In the embodiment in which the battery cell 20 is a square-casing battery, the first direction X is parallel to the width direction of the battery cell 20.

The partition 32 and the thermo-regulating tube 31 may be integrally formed, for example, the partition 32 and the thermo-regulating tube 31 are formed by a process of integrally forming by casting, extrusion, or the like. The partitioning member 32 and the thermo-regulating tube 31 may be separately provided and then connected to the inner wall of the thermo-regulating tube 31 by welding, bonding, clamping, or the like.

In the embodiment in which the battery cell 20 is a square-casing battery, the first direction X is parallel to the height direction of the battery 100, and the height direction of the battery cell 20 is the tab protruding direction of the electrode assembly of the battery cell 20.

In other embodiments, only one flow passage 33 may be formed inside the thermo-regulating tube 31.

In the present embodiment, the partitions 32 partition the thermally regulated interior to form a plurality of flow passages 33. Each flow passage 33 extends in a second direction Y, which is perpendicular to the first direction X. In the embodiment in which the battery cell 20 is a square-casing battery, the second direction Y is parallel to the length direction of the battery cell 20.

The flow passages 33 may be independent of each other or may communicate with each other. Only some of the flow passages 33 of the plurality of flow passages 33 may contain the fluid medium, or each flow passage 33 may contain the fluid medium. Therefore, the partitions 32 partition the interior of the thermo-regulating tube 31 to form a plurality of flow passages 33, which facilitates controlling the distribution of the fluid medium inside the thermo-regulating tube 31 according to actual needs, so as to reasonably regulate the temperature of the battery cells 20.

With continued reference to fig. 3, 4, and 5, in some embodiments, the thermal management component 30 further includes a manifold 34, the manifold 34 includes a manifold chamber 34a (shown in fig. 8 and 9), the manifold chamber 34a is in communication with the plurality of flow channels 33, the insulator 40 includes a second insulator 40b, and at least a portion of the second insulator 40b is disposed between the manifold 34 and the battery cells 20.

In this embodiment, the bus pipe 34 may be located on one side of the battery cell 20, and since the bus pipe 34 also contains a fluid medium, the bus pipe 34 may also be used to exchange heat with the battery cell 20, the second insulating member 40b covers at least a part of an outer surface of the bus pipe 34, the second insulating member 40b may completely cover the outer surface of the bus pipe 34, or may cover only one side surface of the bus pipe 34 facing the battery cell 20, and the second insulating member 40b may be used to insulate and isolate the bus pipe 34 and the battery cell 20, so as to reduce the risk of battery short circuit and improve the safety performance of the battery.

Referring to fig. 5, 8 and 9, in the present embodiment, the manifold 34 includes a first manifold piece 341 and a second manifold piece 342; the first confluence member 341 is provided with a medium inlet 3412, a first confluence chamber 3411 communicating with the medium inlet 3412 is formed inside the first confluence member 341, a medium outlet 3422 is provided inside the second confluence member 342, a second confluence chamber 3421 communicating with the medium outlet 3422 is formed inside the second confluence member 342, and both the first confluence chamber 3411 and the second confluence chamber 3421 communicate with each flow passage 33.

The medium inlet 3412 is disposed on the first confluence member 341, the medium outlet 3422 is disposed on the second confluence member 342, the first confluence chamber 3411 of the first confluence member 341 and the second confluence chamber 3421 of the second confluence member 342 are both communicated with each flow channel 33, so that the fluid medium can enter the first confluence chamber 3411 from the medium inlet 3412, and then is distributed to each flow channel 33 through the first confluence chamber 3411, and the fluid medium in each flow channel 33 can flow to the second confluence member 342 along the second direction Y, is collected in the second confluence chamber 3421, and is discharged from the medium outlet 3422.

In other embodiments, rather than providing a manifold 34, the thermal management component 30 may include a media inlet 3412 and a media outlet 3422 for each flow passage 33, with fluid media entering the flow passage 33 from the respective media inlet 3412 of each flow passage 33 and exiting the respective flow passage 33. This arrangement facilitates independent control of the amount and flow rate of the fluid medium in each flow passage 33.

In this embodiment, the first confluence part 341 is disposed to facilitate distribution of the fluid medium to each flow channel 33, and to facilitate uniformity of temperature adjustment of the battery cells 20, and the second confluence part 342 is disposed to facilitate rapid discharge of the fluid medium, thereby improving heat exchange efficiency.

In some embodiments, the second insulator 40b covers at least a portion of the outer surface of the manifold 34 to insulate and isolate the cells 20 from the manifold 34.

"the second insulating member 40b covers at least a part of the outer surface of the bus bar 34", it is understood that a part of the second insulating member 40b covers at least a part of the outer surface of the first bus bar 341 to insulate and separate the battery cells 20 from the first bus bar 341; and/or a portion of the second insulating member 40b covers at least a portion of an outer surface of the second bus bar 342 to insulate and isolate the battery cells 20 from the second bus bar 342.

Here, only a portion of the second insulating member 40b may cover at least a portion of the outer surface of the first bus bar 341 or only a portion of the second insulating member 40b may cover at least a portion of the outer surface of the second bus bar 342, or a portion of the second insulating member 40b may cover at least a portion of the outer surface of the first bus bar 341 and a portion of the second insulating member 40b may cover at least a portion of the outer surface of the second bus bar 342.

In the case where the portion of the second insulating member 40b covers at least a part of the surface of the first bus bar 341, the portion of the second insulating member 40b may cover only a part of the outer surface of the first bus bar 341, for example, the portion of the second insulating member 40b covers only the outer circumferential surface of the first bus bar 341, and both end surfaces of the first bus bar 341 in the first direction X are not covered by the insulating member 40, and the creepage distance between the battery cell 20 and the portion of the first bus bar 341 not covering the insulating member 40 can be increased compared to the case where the insulating member 40 covers only the thermo-regulation tube 31, thereby reducing the risk of short circuit of the battery 100; or a portion of the insulating member 40 covers the entire outer surface of the first bus member 341. In other embodiments, as shown in fig. 10 and 11, the insulating member 40 may not cover the outer surface of the first bus member 341. The first confluence member 341 extends in the first direction X, and the second confluence member 342 extends in the first direction X.

In the case where the portion of the second insulating member 40b covers at least a part of the surface of the second bus bar 342, the portion of the insulating member 40 may cover only a part of the outer surface of the second bus bar 342, for example, the portion of the insulating member 40 covers only the outer circumferential surface of the second bus bar 342, and both end surfaces of the second bus bar 342 in the first direction X are not covered by the second insulating member 40b, and compared to the case where the insulating member 40 covers only the thermo-regulating tube 31, the creepage distance between the battery cell 20 and the portion of the second bus bar 342 not covering the insulating member 40 can be increased, thereby reducing the risk of short circuit of the battery 100; or a portion of the second insulating member 40b covers the entire outer surface of the second bus bar 342. In other embodiments, as shown in fig. 10 and 12, the second insulating member 40b may not cover the outer surface of the second bus bar 342.

Therefore, the second insulator covers at least part of the outer surface of the collecting pipe, the second insulator can completely cover the outer surface of the collecting pipe and can only cover one side surface of the collecting pipe facing the battery monomer, and the second insulator can be used for insulating and isolating the collecting pipe and the battery monomer, so that the risk of battery short circuit is reduced, and the safety performance of the battery is improved.

In some embodiments, the second insulator has a thickness h, as shown in fig. 8 and 9 ₃ Wall thickness of the thermo-regulating tube is h ₂ ，h ₃ /h ₂ ≥0.00625。

In some embodiments, the insulating member 40 has an equal thickness structure, i.e., the thickness of the first insulating member is equal to the thickness of the second insulating member, h ₁ = h ₂ . In other embodiments, the thickness of the first insulator is not equal to the thickness of the second insulator.

h ₃ /h ₂ And may be 0.01, 0.015, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, etc.

h ₃ /h ₂ The creepage distance between the bus pipe 34 and the battery cell 20 is larger, the safety is higher, and the risk of electric contact between the bus pipe and the battery cell in various use scenes is reduced.

In some embodiments, referring to fig. 4, 5, 8, and 9 in combination, in some embodiments, the medium inlet 3412 is provided with a first flow conduit 36, and the medium outlet 3422 is provided with a second flow conduit 37; the insulator 40 further includes a third insulator 40 c; a portion of the third insulating member 40c covers the outer surface of the first flow duct 36 so as to insulate and separate the battery cells 20 from the first flow duct 36; and/or, a portion of the third insulating member 40c covers the outer surface of the second flow duct 37 to insulate and separate the battery cells 20 from the second flow duct 37.

Only the medium inlet 3412 may be provided with the first flow conduit 36, or only the medium outlet 3422 may be provided with the second flow conduit 37, or the medium inlet 3412 may be provided with the first flow conduit 36 and the medium outlet 3422 may be provided with the second flow conduit 37. Fig. 4 and 5 show the case where the medium inlet 3412 is provided with a first draft tube 36 and the medium outlet 3422 is provided with a second draft tube 37.

As shown in fig. 8, in the case that the part of the insulating member 40 covers the outer surface of the first guide tube 36, the part of the insulating member 40 may cover only a part of the outer surface of the first guide tube 36, for example, the part of the insulating member 40 only covers the outer circumferential surface of the first guide tube 36, and both end surfaces of the first guide tube 36 in the axial direction are not covered by the insulating member 40, compared to the case that the insulating member 40 only covers the thermo-regulation tube 31, the first confluence member 341, and the second confluence member 342, the creepage distance between the battery cell 20 and the part of the first guide tube 36 not covering the insulating member 40 can be increased, thereby reducing the risk of short circuit of the battery 100; or portions of the insulating member 40 cover the entire outer surface of the first flow conduit 36. In other embodiments, as shown in fig. 10 and 11, the insulating member 40 may not cover the outer surface of the first fluid conduit 36.

As shown in fig. 9, in the case that the part of the insulating member 40 covers the outer surface of the second flow tube 37, the part of the insulating member 40 may cover only part of the outer surface of the second flow tube 37, for example, the part of the insulating member 40 only covers the outer circumferential surface of the second flow tube 37, and both end surfaces of the second flow tube 37 in the axial direction are not covered by the insulating member 40, compared to the case that the insulating member 40 only covers the thermo-regulation tube 31, the first confluence member 341, and the second confluence member 342, the creepage distance between the battery cell 20 and the part of the second flow tube 37 not covered by the insulating member 40 can be increased, thereby reducing the risk of short circuit of the battery 100; or a portion of the insulating member 40 covers the entire outer surface of the second guide tube 37. In other embodiments, as shown in fig. 10 and 12, the insulating member 40 may not cover the outer surface of the second flow guide tube 37.

As shown in fig. 4, 5, and 10, the first guide pipe 36 and the second guide pipe 37 are coaxially arranged, and both the axial direction of the first guide pipe 36 and the axial direction of the second guide pipe 37 are parallel to the second direction Y.

As shown in fig. 8, 9, 11, and 12, one end of the first guide tube 36 is inserted into the medium inlet 3412 of the first confluence member 341 and welded to the first confluence member 341. One end of the second flow guide pipe 37 is inserted into the medium outlet 3422 of the second confluence member 342 and welded to the second confluence member 342.

The outer peripheral surface of the first flow pipe 36 is provided with a first limiting portion 361, the first limiting portion 361 protrudes out of the outer peripheral surface of the first flow pipe 36 along the radial direction of the first flow pipe 36, and the first limiting portion 361 is used for limiting the distance that the first flow pipe 36 is inserted into the first confluence member 341. When the first fluid guide tube 36 is inserted into the medium inlet 3412 of the first junction member 341, the first limiting portion 361 abuts against the outer wall of the first junction member 341. The first flow tube 36 may be welded to the first confluence member 341 by the first stopper 361.

The outer peripheral surface of the second flow guide pipe 37 is provided with a second limiting portion 371, the second limiting portion 371 radially protrudes out of the outer peripheral surface of the second flow guide pipe 37 along the second flow guide pipe 37, and the second limiting portion 371 is used for limiting the distance that the second flow guide pipe 37 is inserted into the second confluence piece 342. When the second fluid guide tube 37 is inserted into the medium outlet of the second confluence element 342, the second limiting portion 371 abuts against the outer wall of the second confluence element 342. The second flow tube 37 may be welded to the second confluence part 342 through a second stopper 371.

In other embodiments, the media inlet 3412 may not be provided with the first conduit 36 and the media outlet 3422 may not be provided with the second conduit 37.

The first flow conduit 36 is arranged to facilitate the fluid medium to enter the first converging chamber 3411 of the first converging member 341, and the second flow conduit 37 is arranged to facilitate the fluid medium to be discharged from the second converging chamber 3421 of the second converging member 342. The insulating member 40 partially covers the outer surface of the first flow guide pipe 36 and can insulate and separate the first flow guide pipe 36 and the battery cell 20, and/or the insulating member 40 partially covers the outer surface of the second flow guide pipe 37 and can insulate and separate the second flow guide pipe 37 and the battery cell 20, so that the risk of short circuit of the battery 100 is reduced, and the safety performance of the battery 100 is improved.

In some embodiments, the first and second bus bars 341 and 342 are respectively located at both sides of the battery cell 20 along the second direction Y, and the first and second directions X and Y are perpendicular.

The first bus bar 341 and the second bus bar 342 are respectively located at two sides of the battery cell 20, so that the arrangement direction of the first bus bar 341 and the second bus bar 342 is staggered with the extending direction of the tabs of the battery cell 20, and the first bus bar 341 and the second bus bar 342 are staggered with the power output electrode of the battery cell 20, thereby preventing the first bus bar 341 and the second bus bar 342 from influencing the charging and discharging of the battery cell 20 or preventing the first bus bar 341 and the second bus bar 342 from influencing the serial connection, the parallel connection or the parallel-serial connection between the battery cells 20.

In the embodiment in which the battery cell 20 is plural, the plural battery cells 20 are stacked in the third direction Z. In the embodiment in which the battery cell 20 is a square-can battery, the third direction Z is parallel to the thickness direction of the battery cell 20. The first direction X, the second direction Y and the third direction Z are vertical to each other.

As shown in fig. 3, the thermo-regulating tube 31 extends beyond both ends of the battery cell 20 in the second direction Y. The first and

second confluence pieces

341 and 342 are connected to both ends of the thermo-regulating tube 31 in the second direction Y, respectively. The plurality of battery cells 20 can be arranged in a stack in the third direction Z without interfering with the first and

second bus members

341 and 342, so that the plurality of battery cells 20 can be arranged more compactly, which is advantageous in reducing the volume of the battery 100.

In some embodiments, the battery cells are multiple and arranged in a predetermined direction, and the thermal management member is interposed between two adjacent battery cells.

In the embodiment in which the battery cells are multiple, one heat management member is interposed between two battery cells adjacent in the preset direction. In the present embodiment, the predetermined direction is parallel to the third direction.

In other embodiments, the preset direction may also be another direction according to actual needs, for example, the preset direction is a length direction of the battery cell or a width direction of the battery cell. The heat management component is inserted in the two adjacent battery monomers, and can exchange heat with the battery monomers on two sides simultaneously, so that the heat exchange efficiency can be improved.

In some embodiments, the battery cell 20 includes a housing and an insulating layer (not shown) attached to an outer surface of the housing for insulating the insulating member 40 from the housing.

The insulating layer can be a blue film coated on the outer surface of the shell or an insulating coating coated on the outer surface of the shell.

The surface of the outer shell of the battery cell 20 is connected with an insulating layer, and the insulating layer and the insulating member 40 jointly insulate and separate the battery cell 20 and the thermal management component 30, so that the risk of short circuit of the battery 100 is further reduced.

The embodiment of the present application further provides an electric device, where the electric device includes the battery 100 provided in any of the above embodiments.

The battery 100 provided by any of the above embodiments has better safety performance, and the electric equipment is powered by the battery 100 provided by any of the above embodiments, so that the electric safety can be improved.

The embodiment of the application provides a battery 100, and the battery 100 includes a thermal management component 30, an insulating member 40 and a plurality of battery cells 20, and the battery cells 20 are square-shell batteries.

The plurality of battery cells 20 are stacked in the third direction Z, and the thermal management member 30 is disposed between two adjacent battery cells 20. The thermal management component 30 comprises a thermo regulating tube 31, a partition 32, a first converging piece 341 provided with a medium inlet 3412, a second converging piece 342 provided with a medium outlet 3422, a first duct 36 and a second duct 37. The partition 32 partitions the inside of the heat adjusting pipe 31 to form a plurality of flow passages 33 arranged in the first direction X, each flow passage 33 extending in the second direction Y. Both ends of each flow passage 33 in the second direction Y communicate with the first confluence chamber 3411 of the first confluence member 341 and the second confluence chamber 3421 of the second confluence member 342, respectively. The fluid medium enters the first confluent chamber 3411 of the first confluent member 341 from the first flow guide tube 36 through the medium inlet 3412, is distributed to each flow passage 33 by the first confluent chamber 3411, flows from the flow passage 33 to the second confluent chamber 3421 of the second confluent member 342 in the second direction Y, and is discharged from the second flow guide tube 37 through the medium outlet 3422.

The insulating member 40 is attached to the surface of the heat management member 30, wherein a portion of the insulating member 40 covers the outer peripheral surface of the thermo-regulating pipe 31, a portion of the insulating member 40 covers the entire outer surface of the first confluence member 341, a portion of the insulating member 40 covers the entire outer surface of the second confluence member 342, a portion of the insulating member 40 covers the outer peripheral surface of the first flow duct 36, and a portion of the insulating member 40 covers the outer peripheral surface of the second flow duct 37.

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

Claims

1. A battery, comprising:

a battery cell; and

a thermal management component for exchanging heat with the battery cell;

wherein, the surface of the heat management part is provided with an insulating piece, and the insulating piece is used for insulating and isolating the battery cell and the heat management part.

2. The battery of claim 1, wherein the thermal conductivity λ of the insulator is 0.1W/(m-K).

3. The battery of any of claims 1-2, wherein the insulator is a metal insulatorThe density G of the edge piece is less than or equal to 1.5G/cm ³ 。

4. The battery according to claim 1, wherein the compressive strength P of the insulator satisfies 0.01 MPa.ltoreq.P.ltoreq.200 MPa.

5. The battery of claim 1, wherein the material of the insulating member comprises at least one of polyethylene terephthalate, polyimide, and polycarbonate.

6. The battery of claim 1, wherein the thermal management component comprises a thermal regulating tube for containing a fluid medium and for exchanging heat with the battery cell, the insulator comprising a first insulator, at least a portion of the first insulator disposed between the thermal regulating tube and the battery cell.

7. The battery of claim 6, wherein the first insulator has a thickness h ₁ The wall thickness of the thermo-regulating pipe is h ₂ ，h ₁ /h ₂ ≤0.5。

8. The cell defined in any one of claims 6-7, wherein the first insulator has a thickness h ₁ The wall thickness of the thermo-regulating pipe is h ₂ ，h ₁ /h ₂ ≥0.00625。

9. The battery of claim 6, wherein the interior of the thermal regulating tube is provided with a partition for partitioning the interior of the thermal regulating tube into a plurality of flow passages.

10. The battery of claim 9, wherein the thermal management component further comprises a manifold comprising a manifold chamber in communication with the plurality of flow channels, the insulator comprising a second insulator, at least a portion of the second insulator disposed between the manifold and the battery cells.

11. The battery of claim 10, wherein the second insulator covers at least a portion of an outer surface of the manifold to insulate and isolate the battery cells from the manifold.

12. The battery of any of claims 10-11, wherein the second insulator has a thickness h ₃ The wall thickness of the collecting pipe is h ₂ ，h ₃ /h ₂ ≥0.00625。

13. The battery according to claim 1, wherein the plurality of battery cells are arranged in a predetermined direction, and the thermal management member is interposed between two adjacent battery cells.

14. An electrical consumer, characterized in that it comprises a battery according to any one of claims 1-13 for providing electrical energy to the electrical consumer.