CN215989077U - Battery and power consumption device - Google Patents

Abstract

The present application relates to a battery and a power consumption device. The embodiment of the application provides a battery and an electric device, wherein the battery comprises a plurality of battery single cells which are arranged along a first direction; the battery cell includes a case having an accommodating portion; and a thermal management component, at least a portion of the thermal management component being located within the receptacle, the thermal management component being configured to regulate a temperature of the battery cell. The application provides a battery and electric device can improve the security performance of battery.

Description

Battery and power consumption device

Technical Field

The present application relates to the field of battery technology, and in particular, to a battery and an electric device.

Background

The battery cell is widely used in electronic devices such as a mobile phone, a notebook computer, a battery car, an electric airplane, an electric ship, an electric toy car, an electric toy ship, an electric toy airplane, an electric tool, and the like. The battery monomer can comprise a cadmium-nickel battery monomer, a hydrogen-nickel battery monomer, a lithium ion battery monomer, a secondary alkaline zinc-manganese battery monomer and the like.

When a plurality of battery cells are used in a pack, the plurality of battery cells are assembled together and form a battery. How to avoid the safety performance problem caused by the influence of temperature on the battery cells is a research direction in the industry.

SUMMERY OF THE UTILITY MODEL

The application provides a battery and a power consumption device, which can improve the safety performance of the battery.

In a first aspect, an embodiment of the present application provides a battery, including a plurality of battery cells, where the plurality of battery cells are arranged along a first direction; the battery cell comprises a shell, wherein the shell is provided with an accommodating part; and a thermal management component, at least a portion of the thermal management component being located within the receptacle, the thermal management component for regulating a temperature of the battery cell.

In the above scheme, through setting up the thermal management part in the mode of portion of holding, the portion of holding can carry on spacingly or fixed to the thermal management part, and the temperature that is favorable to the thermal management part can diffuse to the free each position of battery fast, improves the free heat exchange efficiency of battery, avoids the free thermal runaway of battery and produces the safety problem. On the other hand, the space occupied by the thermal management component can be reduced, and the energy density of the battery can be improved.

In some embodiments, the receptacle comprises a groove; and/or the receiving portion includes a through hole.

In the above scheme, the accommodating part is arranged to be the groove, the through hole and the like, so that the stability of the thermal management component relative to the battery cell can be improved, and the temperature transfer efficiency is improved.

In some embodiments, the shape of the receptacle matches the shape of the thermal management component.

In the above scheme, the heat exchange rate of the heat management component to the battery cell can be improved.

In some embodiments, the housing includes two first sidewalls facing each other in a first direction and two second sidewalls facing each other in a second direction, each first sidewall having a larger dimension in the second direction than each second sidewall in the first direction, the first direction intersecting the second direction, each second sidewall being connected to the two first sidewalls; at least part of the accommodating part is arranged on the first side wall.

In the above scheme, the surface area of first lateral wall is bigger than the surface area of other lateral walls, sets up the portion of accommodating at least at first lateral wall for the thermal management part can be more with the casing contact, be favorable to promoting the free heat exchange efficiency of battery.

In some embodiments, the thermal management component comprises at least two heat exchange tubes, which are respectively accommodated in the accommodation portions of the two first side walls.

Among the above-mentioned scheme, through being fixed in the mode of holding portion with the heat transfer pipeline, be favorable to high-efficient quick carrying out temperature regulation to the free big face of battery, avoid the temperature out of control.

In some embodiments, the thermal management component further comprises a connecting component for communicating the two heat exchange lines.

In the above scheme, the control of the temperature of the heat management component is convenient, and the temperature of the plurality of battery cells can be rapidly adjusted.

In some embodiments, the second side wall is also provided with a housing in which the connecting member is at least partially housed.

In the scheme, the space occupied by the thermal management component can be further reduced, and the energy density of the battery is improved.

In some embodiments, the melting point of the heat exchange line is between 100 ℃ and 200 ℃.

In the above scheme, when the battery monomer is out of control, the heat exchange pipeline corresponding to the battery monomer is broken, and the cooling medium in the heat exchange pipeline flows to the battery monomer and is cooled down emergently.

In some embodiments, the battery cell further includes an electrode assembly accommodated in the case, a side of the case facing the electrode assembly is provided with a protrusion, the accommodation portion is formed at a side of the protrusion facing away from the electrode assembly, and the insulating member is located between the protrusion and the electrode assembly. The rigidity of the insulating member is greater than that of the housing.

In the scheme, on one hand, the electrode assembly can be compacted by the shell, and the electrode assembly is prevented from having poor phenomena such as pole piece wrinkling and the like; on the other hand, the insulating member may prevent the convex portion of the case from crushing the electrode assembly.

In a second aspect, an embodiment of the present application provides an electric device, which includes the battery provided in any one of the embodiments of the first aspect.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic top view of a powered device according to some embodiments of the present application;

fig. 2 is an exploded schematic view of a battery according to some embodiments of the present application;

fig. 3 is a schematic top view of a battery module of a battery according to some embodiments of the present application;

fig. 4 is a schematic diagram of a partial explosion of a cell of a battery according to some embodiments of the present application;

fig. 5 is a schematic illustration of a partial explosion of a battery according to some embodiments of the present application;

fig. 6 is a schematic diagram of a cell of a battery according to some embodiments of the present disclosure;

fig. 7 is a schematic structural view of a battery cell and a thermal management component of a battery according to some embodiments of the present application;

FIG. 8 is a schematic top view of the battery cell and thermal management component of FIG. 7;

FIG. 9 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 8;

fig. 10 is a partially enlarged view of a portion B in fig. 9.

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 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. 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.

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 in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

The term "plurality" as used herein refers to more than two (including two), and similarly, the term "plurality" refers to more than two (including two).

The term "parallel" in this application includes not only the case of absolute parallelism, but also the case of substantially parallel as conventionally recognized in engineering; meanwhile, "vertical" also includes not only the case of absolute vertical but also the case of substantially vertical as conventionally recognized in engineering.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the battery is used for supplying electric energy to the electric device. For example, the electric device may be a mobile phone, a portable device, a notebook computer, a battery car, an electric car, a ship, a spacecraft, an electric toy, an electric power tool, and the like, for example, the spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, and the like, the electric toy includes a stationary or mobile electric toy, for example, a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the electric power tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an electric impact drill, a concrete vibrator, an electric planer, and the like.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to be applied to the above-described apparatuses, and may also be applied to all electric devices using batteries.

For convenience of explanation, the following embodiments will be described with an electric device as an example of a vehicle.

Fig. 1 is a schematic top view of an electric device according to some embodiments of the present application, and as shown in fig. 1, a battery 2 is disposed inside a vehicle 1, and the battery 2 may be disposed at the bottom or the head or the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, and for example, the battery 2 may serve as an operation power source of the vehicle 1.

The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being adapted to control the battery 2 to power the motor 4, e.g. for start-up, navigation and operational power demands while driving of the vehicle 1.

In some embodiments of the present application, the battery 2 may be used not only as an operating power source of the vehicle 1, but also as a driving power source of the vehicle 1, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1.

Fig. 2 is an exploded view of a battery according to some embodiments of the present application. As shown in fig. 2, the battery includes a case 20 and a battery cell (not shown), which is accommodated in the case 20.

The case 20 is used to accommodate the battery cells, and the case 20 may have various structures. In some embodiments, the box body 20 may include a first box body portion 21 and a second box body portion 22, the first box body portion 21 and the second box body portion 22 cover each other, and the first box body portion 21 and the second box body portion 22 jointly define a receiving space 23 for receiving the battery cells. The second box portion 22 may be a hollow structure with one open end, the first box portion 21 is a plate-shaped structure, and the first box portion 21 covers the open side of the second box portion 22 to form the box 20 with the accommodating space 23; the first tank portion 21 and the second tank portion 22 may be hollow structures with one side open, and the open side of the first tank portion 21 covers the open side of the second tank portion 22 to form the tank 20 having the accommodating space 23. Of course, the first casing portion 21 and the second casing portion 22 may be various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In order to improve the sealing property after the first casing portion 21 and the second casing portion 22 are connected, a sealing member, such as a sealant or a gasket, may be provided between the first casing portion 21 and the second casing portion 22.

Assuming that the first box portion 21 covers the top of the second box portion 22, the first box portion 21 may also be referred to as an upper box cover, and the second box portion 22 may also be referred to as a lower box body.

In the battery 2, one or more battery cells may be provided. If the number of the battery monomers is multiple, the multiple battery monomers can be connected in series or in parallel or in series-parallel, and the series-parallel refers to that the multiple battery monomers are connected in series or in parallel. 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 20; of course, a plurality of battery cells may be connected in series, in parallel, or in series-parallel to form the battery module 10, and a plurality of battery modules 10 may be connected in series, in parallel, or in series-parallel to form a whole and be accommodated in the box 20.

Illustratively, fig. 3 is a schematic top view of a battery module of a battery according to some embodiments of the present disclosure. As shown in fig. 2, the battery module 10 includes two or more battery cells 11. There are various ways of arranging the battery module 10. In one embodiment, the battery module 10 includes more than two battery cells 11. Two or more battery cells 11 are arranged side by side.

In some embodiments, the battery module 10 includes a housing that is generally a hollow cuboid. Specifically, the housing includes two side plates 13 facing each other in the second direction Y and two end plates 12 facing each other in the first direction X, the first direction X and the second direction Y intersect, the two end plates 12 and the two side plates 13 are connected to each other to enclose an accommodating space having an opening, and two or more battery cells 11 are located in the accommodating space. In one embodiment, the first direction X and the second direction Y are perpendicular. The side plates 13 and the end plates 12 are flat plate-shaped and perpendicular to each other. The two side plates 13 are disposed parallel to each other, the two end plates 12 are disposed parallel to each other, and the plurality of battery cells 11 are arranged in the first direction X.

Fig. 4 is a schematic diagram illustrating a partial explosion of a battery cell of a battery according to some embodiments of the present disclosure, and as shown in fig. 4, a battery cell 11 includes an electrode assembly 112, a case 111, and an end cap assembly 113, where the case 111 has a receiving cavity 111a and an opening 111b, and the electrode assembly 112 is received in the receiving cavity 111 a. The case 111 is determined according to the shape of the one or more electrode assemblies 112 after being combined, for example, the case 111 may be a hollow rectangular parallelepiped, a cube, or a cylinder, and one of the faces of the case 111 has an opening 111b so that the one or more electrode assemblies 112 may be placed in the case 111. For example, when the housing 111 is a hollow rectangular parallelepiped or square, one of the planes of the housing 111 is an open plane, that is, the plane has no wall body so that the inside and the outside of the housing 111 communicate with each other. The end cap assembly 113 includes an end cap 113a, and the end cap 113a covers the opening 111b and is coupled to the case 111 to close the opening 111b of the case 111, so that the electrode assembly 112 is placed in the closed cavity. The case 111 is filled with an electrolyte, such as an electrolytic solution. The housing 111 may be made of a material such as aluminum, aluminum alloy, or plastic.

The end cap 113a may further include two electrode terminals 113b, and the two electrode terminals 113b may be disposed on the end cap 113 a. The end cap 113a is generally in the shape of a flat plate, and two electrode terminals 113b are fixed on the flat plate surface of the end cap 113a, the two electrode terminals 113b being a positive electrode terminal and a negative electrode terminal, respectively. One connecting member, which may also be referred to as a current collecting member, is provided for each of the electrode terminals 113b to electrically connect the electrode assembly 112 and the electrode terminals 113 b.

In the battery cell 11, the electrode assembly 112 may be provided in a single or plural number according to actual use requirements.

For the battery cell 11, the battery cell 11 needs to operate in a suitable ambient temperature. In order to maintain the battery cells 11 at a suitable temperature and to ensure the operation performance of the battery cells 11, in a battery having a plurality of battery cells 11, a heat management member for containing a fluid to adjust the temperature of the plurality of battery cells 11 may be provided. Here, the fluid may be a liquid or a gas, and adjusting the temperature means heating or cooling the plurality of battery cells 11.

In the case of cooling the battery cells 11, the thermal management component is used for accommodating a cooling fluid to lower the temperature of the plurality of battery cells 11, and at this time, the thermal management component may also be referred to as a cooling component, a cooling system, a cooling plate, or the like, and the fluid accommodated therein may also be referred to as a cooling medium or a cooling fluid, and more specifically, may be referred to as a cooling liquid or a cooling gas. In addition, the thermal management component may also be used to heat the plurality of battery cells 11 to increase the temperature, which is not limited in the embodiment of the present application. Alternatively, the fluid may be circulated to achieve better temperature regulation. Optionally, the fluid may be water, a mixture of water and glycol, air, or the like.

The inventors have found that in a battery, the thermal management features take up space, affecting the energy density of the battery.

In view of this, the present application is intended to provide a battery, which can improve the heat exchange efficiency of the thermal management component to the battery cell 11, and improve the safety performance and energy density of the battery.

Fig. 5 is a schematic diagram of a partial explosion of a battery according to some embodiments of the present application. Fig. 6 is a schematic diagram of a cell structure of a battery according to some embodiments of the present disclosure. As shown in fig. 5 and 6, the battery includes a plurality of battery cells 11, the plurality of battery cells 11 are arranged along a first direction X, the battery cell 11 includes a housing 111, the housing 111 has a receiving portion 114, at least a portion of the thermal management member 14 is located in the receiving portion 114, and the thermal management member 14 is used for adjusting the temperature of the battery cell 11.

In some embodiments, two opposite end plates 12 and two opposite side plates 13 enclose a receiving cavity, a plurality of battery cells are located in the receiving cavity, the two end plates 12 are located at the outermost sides of the battery cells 11 in the first direction X, the two side plates 13 are located at the outermost sides of the battery cells 11 in the second direction Y, and the first direction X intersects with the second direction Y. Illustratively, the first direction X and the second direction Y are perpendicular.

At least part of the thermal management component 14 is disposed in the accommodating portion 114 on the housing 111, so that the thermal management component 14 can be closer to the electrode assembly 112 in the housing 111 in the form of being disposed in the accommodating portion 114, and the thermal management component 14 can conduct temperature through contact with the housing 111 in the accommodating portion 114, which is beneficial to rapidly diffusing the temperature of the thermal management component 14 to various positions of the housing 111, improving the heat exchange efficiency of the thermal management component 14 to the battery cells 11, timely adjusting the temperature of the battery cells 11, and avoiding safety problems caused by thermal runaway of the battery cells 11. Furthermore, the accommodating portion 114 can also provide a placement space for the thermal management component 14, and the occupied space of the thermal management component 14 can be reduced, so as to improve the energy density of the battery.

In some embodiments, the receiving portion 114 is used to receive at least a portion of the thermal management component 14, and the shape of the receiving portion 114 disposed on the housing 111 for receiving the thermal management component 14 may vary according to the shape, size, etc. of the thermal management component 14. For example, when the thermal management component 14 is a tubular structure, the accommodating portion 114 includes a through hole, the thermal management component 14 of the tubular structure can pass through the through hole, the tubular structure can be in clearance fit with the through hole, and the temperature circumferentially emitted by the thermal management component 14 at the through hole part can be more widely and directly conducted to various positions of the shell, which is beneficial to improving the temperature transmission efficiency. The through hole does not communicate with the accommodating chamber of the housing 111.

In some embodiments, the receptacle 14 comprises a groove that is recessed toward the housing 111 relative to an outer surface of the housing 111. The arrangement of the groove can limit or fix the thermal management component 14, and the stability of the thermal management component 14 relative to the battery cell 11 is improved.

It will be appreciated that the shape of the receptacle 114 matches the shape of the thermal management component 14. The accommodating part 114 can improve the heat exchange efficiency of the thermal management component 14 for the battery cell 11, the thermal management component 14 is not easy to damage, and the thermal management component 14 can be kept in a state of being attached to the shell 111, so that the safety performance of the battery cell 11 is ensured. Illustratively, the receiver 114 is a clearance or interference fit with the thermal management component 14.

In some embodiments, the housing 111 includes two first sidewalls 1112 facing each other in the first direction X and two second sidewalls 1111 facing each other in the second direction Y, the two first sidewalls 1112 being connected to each of the second sidewalls 1111 and defining the receiving cavity and the opening. The receiving portion 114 may be disposed on at least one of the first and second sidewalls 1112 and 1111 to enable the thermal management member 14 at least partially disposed in the receiving portion 114 to more rapidly adjust the temperature of the battery cell 11.

In some embodiments, the first sidewall 1112 and the second sidewall 1111 are flat and perpendicular to each other. The two first side walls 1112 are disposed parallel to each other, and the two second side walls 1111 are disposed parallel to each other. An end cap 1113 is attached to the first and second side walls 1112, 1111 to close the opening of the housing 111. For example, the end cap 1113 may be welded to the first sidewall 1112 and the second sidewall 1111. In cell 11, end cap 1113 is perpendicular to first sidewall 1112 and second sidewall 1111.

In some embodiments, the size of the two first sidewalls 1112 in the second direction Y is larger than the size of each second sidewall 1111 in the first direction X, and at least a portion of the receiving portion 114 is disposed on the first sidewalls 1112. In the case 111, the surface of the first sidewall 1112 has a larger surface area than the surface of the other sidewall, and at this time, the accommodating portion 114 is disposed at least on the first sidewall 1112, so that the thermal management component 14 can be in more contact with the case 111, which is beneficial to improving the heat exchange efficiency of the battery cell 11.

In some embodiments, the case 111 further includes a bottom wall disposed on a side of the electrode assembly 112 facing away from the end cap 1113 along the third direction Z, the bottom wall is perpendicular to the first side wall 1112 and the second side wall 1111, and the accommodating portion 114 may also be disposed on the bottom wall. The third direction Z intersects the first direction X and the second direction Y. In some examples, the bottom wall, first side wall 1112, and second side wall 1111 are integrally formed; in other examples, the bottom wall can also be connected to the first side wall 1112 and the second side wall 1111 by welding or the like. Illustratively, the third direction Z is perpendicular to both the first direction X and the second direction Y.

In some embodiments, when the accommodating portion 114 is disposed on the first side wall 1112 on at least one side of the housing 111 in the first direction X, when the plurality of battery cells 11 and the thermal management member 14 are assembled to form a battery, the thermal management member 14 may be disposed in the accommodating portion 114, so that the thermal management member 14 disposed between two adjacent battery cells 11 in the first direction X does not occupy an additional space, and the thermal management member 14 does not need to be disposed by increasing the distance between the battery cells 11 in the first direction X. In order to make full use of the internal space of the battery, the end plate 12 facing the first side wall 1112 of the outermost battery cell 11 may be provided with the receiving portion 114, and when the thermal management member 14 is provided between the end plate 12 and the battery cell 11, the thermal management member 14 may be received in the receiving portion 114.

Fig. 7 is a schematic structural diagram of a battery cell and a thermal management component of a battery according to some embodiments of the present disclosure. As shown in fig. 7, the thermal management component includes at least two heat exchange pipes 141, and the two heat exchange pipes 141 are respectively accommodated in the accommodating parts 114 of the two first sidewalls 1112. For example, the two heat exchange pipes 141 may be respectively disposed on two first sidewalls 1112 of the same battery cell, or may be disposed on two adjacent first sidewalls 1112 in adjacent battery cells, which is not specifically limited herein.

In some embodiments, when the accommodating portions 114 are respectively disposed in two first side walls 1112 facing each other in two adjacent battery cells, two heat exchanging pipes 141 may be disposed and respectively disposed in the accommodating portions 114 in the two first side walls 1112, in this case, in order to avoid the increase of the volume of the assembled battery, the accommodating portions 114 are disposed as through holes of the first side walls 1112, and the disposed heat exchanging pipes 141 do not need to occupy additional space. Or, heat exchange pipeline 141 also can set up to one, receiving part 114 sets up to the recess with heat exchange pipeline 141 shape assorted, and relative recess encloses synthetic complete closure or non-closed annular structure in two battery monomer to restrict heat exchange pipeline 141 in it, this kind of cooperation mode not only is convenient for heat exchange pipeline 141's installation fixed, can avoid heat exchange pipeline 141 additionally to occupy the space between the adjacent battery monomer, leads to the clearance between the battery monomer to increase, can't satisfy the assembly demand of a plurality of battery monomer in limited space.

In some embodiments, the accommodating portions 114 on the first side walls 1112 are provided in a plurality and arranged along the third direction Z, and each accommodating portion 114 extends along the second direction Y and penetrates through the first side wall 1112. Heat exchange pipeline 141 is bent into a serpentine structure to wind in a plurality of receiving portions 114, when being convenient for fix heat exchange pipeline 141, heat exchange pipeline 141 can in time carry out temperature regulation to the different positions of first sidewall 1112, has promoted the free heat exchange efficiency of battery. It is understood that receiving portion 114 and heat exchange line 141 may be provided in other configurations, and the purpose of heat exchange line 141 is to adjust the temperature of different positions of first sidewall 1112 so as to increase the temperature adjustment rate, which is not limited in this respect.

Illustratively, the plurality of heat exchange lines 141 may be independent of each other, and both ends of each heat exchange line 141 may be respectively connected to a fluid inlet and a fluid outlet of the thermal management component, so that a fluid can circulate in the heat exchange line 141. For example, when the temperature of a battery cell in the battery increases, the heat exchange pipe 141 adjacent to the battery cell circulates a cooling medium to cool the corresponding battery cell.

In some embodiments, the thermal management component further comprises a connecting member 15, the connecting member 15 being used to communicate the two heat exchange lines 141. Adjacent heat exchange pipelines 141 are connected end to end through the arrangement of the connecting part 15, and two ends of the heat exchange pipeline 141 located at the outermost side are respectively connected with the fluid inlet and the fluid outlet, so that the plurality of heat exchange pipelines 141 are connected into a whole, and fluid can circulate among the plurality of heat exchange pipelines 141. For example, when the temperature of the battery cell increases, the fluid inlet circulates a cooling medium to the heat exchange pipeline 141, and during the circulation process, the large surface of the battery cell can be cooled respectively, so that the cooling rate is increased.

In some embodiments, the second side wall 1111 is also provided with a receiving portion 114, and the connection member 15 is at least partially received in the receiving portion 114. When the heat exchange pipelines 141 on two sides of the same battery cell in the first direction X are communicated through the connection member 15, the connection member 15 needs to bypass the second side wall 11111, and in a limited space enclosed by the end plate and the side plate, in order not to increase the volume of the battery, the second side wall 1111 is provided with an accommodating portion 114 corresponding to the connection member 15 for accommodating the connection member 15. Thus, the space occupied by the thermal management component can be further reduced, and the energy density of the battery can be improved.

Illustratively, the connection member 15 may be a pipe having the same shape and size as the heat exchange pipe 141, which are integrally formed, and the pipe may be a circular pipe having a cavity, a square pipe, or the like, which is not particularly limited herein.

In some embodiments, heat exchange line 141 has a melting point in the range of 100 ℃ to 200 ℃. Illustratively, the heat exchange pipeline 141 is made of a plastic material with a melting point within the above range, such as a polyethylene material (melting point 120-136 ℃), a polypropylene material (melting point 148-176 ℃), and a polystyrene material (melting point 148-176 ℃), and when a battery cell is thermally out of control, the heat exchange pipeline 141 corresponding to the thermally out of control battery cell is broken, and a cooling medium in the heat exchange pipeline 141 flows to the thermally out of control battery cell to cool the thermally out of control battery cell urgently, and further, heat is prevented from being transferred to an adjacent battery cell.

In some embodiments, for the medium for temperature adjustment in heat exchange line 141, a liquid with high thermal conductivity and insulation, such as simethicone, vinylsilicone, etc., may be selected.

Fig. 8 isbase:Sub>A top view of the battery cell and the thermal management member shown in fig. 7, fig. 9 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 8, and fig. 10 isbase:Sub>A partial enlarged view of portion B of fig. 9. As shown in fig. 8, 9 and 10, the battery cell includes an electrode assembly 112 and an insulating member 16, the electrode assembly 112 is accommodated in a case 111, a side of the case 111 facing the electrode assembly 112 is provided with a protrusion 1115, the accommodation portion is formed at a side of the protrusion 1115 facing away from the electrode assembly 112, the insulating member 16 is located between the protrusion 1115 and the electrode assembly 112, and the rigidity of the insulating member 16 is greater than that of the case 111. The insulating member 16 is used to insulate the electrode assembly 112 from the case 111, and the insulating member 16 has a plate-like structure located between the projections 1115 and the electrode assembly 112, so that occurrence of stress unevenness can be avoided. For example, the insulating member 16 may be made of a material such as polyethylene, polypropylene, or the like, which has higher rigidity than the case 111.

In some embodiments, the protrusion 1115 may be a protrusion formed on the inner surface of the first sidewall, so that the inner surface of the first sidewall is uneven, or a groove-shaped receiving portion is provided on the outer sidewall of the first sidewall, so that when the receiving portion is used for receiving the thermal management component 14, the first sidewall protrudes toward the inner surface through stamping to form the protrusion 1115, that is, the inner sidewall of the first sidewall corresponding to the position where the receiving portion is provided is the protrusion 1115, and a recess 1116 is formed between adjacent receiving portions in the third direction Z with respect to the protrusion 1115. The insulating member 16 covers at least the two convex parts 1115 located at the outermost side in the third direction Z along the first direction X, and two ends of the electrode assembly 112 in the third direction Z are respectively flush with the two convex parts 1115 located at the outermost side, so that the electrode assembly 112 is effectively compacted, and the electrode assembly 112 is prevented from being damaged by pole piece wrinkling and the like. Also, the provided insulator 16 can prevent the projections 1115 from crushing the electrode assembly 112.

Illustratively, in order to facilitate the assembly of the electrode assembly 112 into the case 111, the first side wall and the second side wall are provided with chamfers 1114 in positions of the case 111 corresponding to the openings, so as to facilitate the assembly of the electrode assembly 112 and avoid the occurrence of the problems of impact injury and the like.

While the invention 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 invention, and particularly, various features shown in the various embodiments may be combined in any combination as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A battery, comprising:

the battery pack comprises a plurality of battery units, a plurality of battery units and a plurality of control units, wherein the battery units are arranged along a first direction; the battery cell includes a case having an accommodating portion; and

a thermal management component, at least a portion of the thermal management component being located within the receptacle, the thermal management component to regulate a temperature of the battery cell.

2. The battery of claim 1, wherein the receiving portion comprises a groove; and/or

The accommodating portion includes a through hole.

3. The battery of claim 1, wherein the shape of the receptacle matches the shape of the thermal management component.

4. The battery according to claim 1, wherein the case includes two first side walls facing each other in the first direction and two second side walls facing each other in a second direction, each of the first side walls having a larger dimension in the second direction than each of the second side walls in the first direction, the first direction intersecting the second direction, each of the second side walls being connected to the two first side walls;

at least part of the accommodating part is arranged on the first side wall.

5. The battery of claim 4, wherein the thermal management component comprises at least two heat exchange tubes, the two heat exchange tubes being received in the receiving portions of the two first side walls, respectively.

6. The battery of claim 5, wherein the thermal management component further comprises a connecting component for communicating the two heat exchange lines.

7. The battery of claim 6, wherein the second side wall is also provided with the receiving portion, the connecting member being at least partially received in the receiving portion.

8. The battery of claim 5, wherein the heat exchange lines have a melting point of 100 ℃ to 200 ℃.

9. The battery according to any one of claims 1-8, wherein the battery cell further comprises an electrode assembly housed in the case, a side of the case facing the electrode assembly is provided with a protrusion, the housing is formed on a side of the protrusion facing away from the electrode assembly, and an insulating member is located between the protrusion and the electrode assembly;

the insulator has a rigidity greater than that of the housing.

10. An electric device, characterized in that: comprising a battery according to any of claims 1-9 for providing electrical energy.

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