CN216698504U

CN216698504U - Battery and electric device

Info

Publication number: CN216698504U
Application number: CN202220392568.2U
Authority: CN
Inventors: 周严东; 曹根; 黄银成; 沈圳
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-06-07
Anticipated expiration: 2032-02-25
Also published as: WO2023160118A1

Abstract

The application relates to a battery and an electric device, wherein the battery comprises a box body, a battery monomer and a cooling piece. The box body is provided with an accommodating cavity; the number of the battery monomers is multiple, and the multiple battery monomers are arranged in the accommodating cavity along the preset direction; the cooling piece is arranged on at least one side of the single battery along the preset direction, and a first channel is arranged in the cooling piece; wherein, the box is hollow structure in order to form the second passageway on the box, first passageway and second passageway intercommunication. In the above scheme, establish to hollow structure in order to form the second passageway through at the box, and the first passageway intercommunication in second passageway and the cooling member for first passageway and second passageway form cooling circuit, realize that the coolant liquid can circulate between first passageway and second passageway, in order to lower the temperature to battery monomer. The space occupied by the cooling circuit in the battery can be reduced to a greater extent, the structure of the box body is firmer compared with that of a tubular cooling circuit, and the structural strength and reliability of the cooling circuit are higher by utilizing the second channel formed by the box body.

Description

Battery and electric device

Technical Field

The application relates to the technical field of new energy batteries, in particular to a battery and a power utilization device.

Background

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

In the use process of charging and discharging, the battery can generate heat, and a cooling system is required to be arranged inside the battery so as to enable the battery core to dissipate heat in time. The existing battery has the problems of low space utilization rate and poor reliability of a cooling system.

SUMMERY OF THE UTILITY MODEL

Therefore, a battery and an electric device are needed to be provided, and the problems that the battery space utilization rate is low and the reliability of a cooling system is poor in the prior art are solved.

In a first aspect, the present application provides a battery including a case, a battery cell, and a cooling member. The box body is provided with an accommodating cavity; the number of the battery monomers is multiple, and the multiple battery monomers are arranged in the accommodating cavity along a preset direction; the cooling piece is arranged on at least one side of the single battery along the preset direction, and a first channel is arranged in the cooling piece; the box body is of a hollow structure so as to form a second channel on the box body, and the first channel is communicated with the second channel. In the above scheme, establish hollow structure in order to form the second passageway through with the box, and the first passageway intercommunication in second passageway and the cooling member for first passageway and second passageway form cooling circuit, realize that the coolant liquid can circulate between first passageway and second passageway, in order to lower the temperature to battery monomer. The arrangement mode can reduce the space occupied by the cooling circuit in the battery to a greater extent, the structure of the box body is firmer compared with that of a tubular cooling circuit, and the second channel is formed by the box body so that the structural strength and the reliability of the cooling circuit are higher.

The technical solution of the present application is further described below:

in any embodiment, the first channel and the second channel are removably in communication by a coupling assembly. The first channel and the second channel are detachably communicated, so that on one hand, the battery is convenient to assemble, the box body and the cooling piece are convenient to assemble after being respectively molded, and the battery molding and assembling efficiency is improved; on the other hand, the box body or the cooling part is convenient to replace in the process of battery maintenance and repair.

In any embodiment, the connection assembly includes a first joint and a second joint. The first joint is connected to the cooling member and is communicated with the first channel; the second joint is connected to the box body and communicated with the second channel; wherein, first joint with the second connects detachable connection. Connect detachably intercommunication cooling part and box through first joint and second to realize first passageway and second passageway detachably intercommunication, improve battery packaging efficiency and be convenient for maintain the maintenance.

In any embodiment, the battery includes a first conduit and/or a second conduit. One end of the first pipeline is communicated with the first joint, and the other end of the first pipeline is communicated with the first channel; and/or a second pipeline, wherein one end of the second pipeline is communicated with the second joint, and the other end of the second pipeline is communicated with the second channel; wherein the first conduit and/or the second conduit is a flexible tube. Through set up the flexible tube between cooling piece and box, utilize the flexible construction of flexible tube to realize being convenient for the assembly, absorb assembly tolerance and absorb the function of the energy of vibration impact operating mode, improve the manufacturability and the mechanism reliability of battery.

In any embodiment, the box body comprises a plurality of side plates, the side plates surround to form the accommodating cavity, the second channel is formed in the side plates, and the cooling part is detachably connected to the inner sides of the side plates. Through connecting box and cooling piece detachably in the inboard of curb plate, can make the cooling piece in the rigidity who holds the intracavity on the one hand, avoid the cooling plate aversion in the battery use, on the other hand, can be convenient for box and cooling plate assembly and disassembly, be convenient for improve battery assembly efficiency.

In any embodiment, the inner side of the side plate is provided with a connecting groove, and the end part of the cooling piece close to the side plate is accommodated in the connecting groove so as to realize that the cooling piece is detachably connected with the inner side of the side plate. Through set up the spread groove in the inboard of curb plate, and the tip of cooling piece holds in the spread groove, can restrict the position of cooling plate and avoid the relative curb plate of cooling plate to remove, and can realize that cooling piece and curb plate can dismantle the connection.

In any embodiment, a heat-conducting glue is filled between the connecting groove and the cooling member. Through filling heat-conducting glue between spread groove and cooling piece, the heat conductivility that the heat-conducting glue was glued on the one hand can improve the heat conductivility of cooling piece and box curb plate, is convenient for conduct the heat of cooling piece to the curb plate, can improve the radiating effect, and on the other hand, the viscidity that the heat-conducting glue was glued can be so that the connection of cooling piece and spread groove is more firm.

In any embodiment, at least one end of the connecting groove is provided with a guide structure to facilitate assembly of the cooling member and the side plate. Through set up guide structure in the one end of spread groove, can be convenient for the cooling piece assemble in the curb plate.

In any embodiment, the side plates include at least a first side plate, a second side plate and a third side plate which are oppositely arranged. The first side plate and the second side plate are connected with the cooling piece and communicated with the first channel; the third side plate is adjacent to the first side plate and the second side plate, and is provided with a water inlet and a water outlet which are communicated with the second channel; the second passages of the first, second, and third side plates and the first passage of the cooling member form a cooling circuit. The second channel through inside first curb plate, second curb plate, third curb plate forms cooling circuit with the first channel of cooling piece, and the coolant liquid circulation of being convenient for to the realization can reduce the cooling circuit and account for the space in the battery to the bigger degree to the free cooling function of battery, and makes cooling circuit's structural strength reliability higher.

In a second aspect, the present application further provides an electric device, including the battery in any of the above embodiments, where the battery is used to provide electric energy.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present application;

FIG. 2 is an exploded view of a battery according to an embodiment of the present application;

FIG. 3 is a schematic view of a structure of a case and a cooling member connected to each other according to an embodiment of the present disclosure;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic structural view of the case of FIG. 3;

FIG. 6 is an enlarged schematic view at B in FIG. 5;

fig. 7 is a schematic view of the assembly of the cooling member and the battery cell of fig. 2;

FIG. 8 is an enlarged schematic view at C in FIG. 7;

fig. 9 is another embodiment of an enlarged schematic view at C in fig. 7.

Description of the reference numerals:

1000. a vehicle;

100. a battery; 110. a box body; 111. an accommodating chamber; 112. connecting grooves; 1121. a guide structure; 113. a side plate; 1131. a first side plate; 1132. a second side plate; 1133. a third side plate; 114. a water inlet; 115. a water outlet; 120. a battery cell; 130. a cooling member; 140. a connecting assembly; 141. a first joint; 142. a second joint; 143. a third joint; 150. a cover body; 160. a first conduit; 170. a second conduit;

200. a controller; 300. a motor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the embodiments disclosed below.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "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.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist, for example, a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

At present, the application of the battery is more and more extensive from the development of market situation. The 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. As the field of application of batteries is continuously expanded, the market demand thereof is also continuously expanded.

The inventor of the present invention has noticed that, as the battery is charged and discharged, the battery cell generates heat, and in order to dissipate heat of the battery cell in time, a cooling system is usually disposed in the battery so as to dissipate heat of the battery cell. Current electric automobile battery adopts the scheme of setting up independent water-cooling tube in the battery usually and carries the coolant liquid, and this kind of scheme occupation space is big, and the water-cooling tube easily takes place the leakage problem after long-term vibration impact operating mode work.

In order to solve the problems of poor reliability and large occupied space of the cooling system, the inventor researches and discovers that a channel can be reserved in the battery box body for the cooling system. Specifically for can set up the battery box into hollow structure, utilize the inside cavity passageway of battery box to carry the coolant liquid to reduce cooling system's occupation space, utilize box self structure to improve intensity reliability simultaneously, avoid receiving vibration, impact and leak.

In view of the above, in order to solve the problems of poor reliability and large occupied space of the cooling system, the inventors have conducted extensive studies to design a battery in which a hollow structure is provided inside a case of the battery to form a channel, and the channel is connected to an internal channel of a cooling member to form a cooling circuit, so that the occupied space of the cooling circuit is reduced and the reliability of structural strength is improved.

The battery disclosed in the embodiment of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto. A power supply system including the battery and the like disclosed in the present application may be used.

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 take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

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 shows a battery 100 according to an embodiment of the present disclosure, which includes a case 110, a battery cell 120, and a cooling member 130. The case 110 is provided with a receiving cavity 111. The number of the battery cells 120 is plural, and the plurality of battery cells 120 are arranged in the accommodating cavity 111 along a predetermined direction. The cooling member 130 is disposed on at least one side of the battery cell 120 in a preset direction, and a first channel is disposed inside the cooling member 130; the case 110 is a hollow structure to form a second channel on the case 110, and the first channel is communicated with the second channel.

The case 110 is used to provide a receiving space for the battery cells 120, and the case 110 may have various structures. In some embodiments, the battery 100 further includes a cover 150, the cover 150 and the case 110 cover each other, and the cover 150 and the case 110 together define a receiving cavity 111 for receiving the battery cell 120. The box body 110 may have a hollow structure with an open end, the cover 150 may have a plate-shaped structure, and the cover 150 covers the open side of the box body 110, so that the cover 150 and the box body 110 together define an accommodating space. The cover 150 and the box 110 may be both hollow structures with one side open, and the open side of the cover 150 may cover the open side of the box 110. Of course, the box 110 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like, which is not limited in this embodiment.

In the battery 100, the number of the battery cells 120 may be multiple, and the multiple battery cells 120 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection. The plurality of battery cells 120 may be directly connected in series or in parallel or in series-parallel, and the whole of the plurality of battery cells 120 is accommodated in the case 110. Of course, the battery 100 may also be formed by connecting a plurality of battery cells 120 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 110. 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 120.

Wherein each battery cell 120 may be a secondary battery 100 or a primary battery 100; but is not limited to, the lithium-sulfur battery 100, the sodium-ion battery 100, or the magnesium-ion battery 100. The battery cell 120 may be cylindrical, flat, rectangular parallelepiped, or other shape.

A first channel is arranged in the cooling member 130, and the first channel is used for flowing of cooling liquid, so that the flowing cooling liquid takes away heat generated by the battery cell 120, and the effect of cooling the battery cell 120 by using the cooling member 130 is achieved. The cooling member 130 is disposed on at least one side of the battery cell 120 in the predetermined direction, and in the embodiment shown in fig. 2, the battery cell 120 is attached to the cooling member 130 over a large surface, so that the attachment area between the battery cell 120 and the cooling member 130 is large, thereby facilitating heat transfer between the battery cell 120 and the cooling member 130.

The case 110 is provided in a hollow structure to form a second passage on the case 110, the second passage provided in the case 110 also being used for the flow of the cooling liquid, the second passage communicating with the first passage in the cooling member 130 so that the second passage can supply the cooling liquid to the first passage. And the second passageway and first passageway intercommunication are in order to form cooling circuit for the coolant liquid can circulate between first passageway and second passageway, so that the produced heat of battery monomer 120 is taken away to the coolant liquid that flows, realizes the cooling effect to battery monomer 120.

In the above solution, the box body 110 is set to be a hollow structure to form the second channel, and the second channel is communicated with the first channel in the cooling member 130, so that the first channel and the second channel form a cooling loop, and the cooling liquid can circulate between the first channel and the second channel to cool the battery cells 120. Such an arrangement can reduce the space occupied by the cooling circuit in battery 100 to a greater extent, and as compared with a tubular cooling circuit, case 110 has a stronger structure, and the reliability of the structural strength of the cooling circuit formed by the second channel formed by case 110 is higher.

Referring to fig. 3-9, according to some embodiments of the present application, optionally, the first channel and the second channel are detachably communicated by a connection assembly 140.

By arranging the first channel and the second channel to be detachably communicated, on one hand, the assembly of the battery 100 is facilitated, the assembly of the box body 110 and the cooling part 130 after the respective molding is facilitated, and the molding and assembling efficiency of the battery 100 is improved; on the other hand, it is also convenient to replace the case 110 or the cooling member 130 during maintenance or repair of the battery 100.

In other embodiments, the first channel and the second channel may be non-detachably connected, such as welded, heat-fused, etc.

Referring to fig. 5-9, according to some embodiments of the present application, optionally, the connection assembly 140 includes a first connector 141 and a second connector 142. The first joint 141 is connected to the cooling member 130 and communicates with the first passage; the second joint 142 is connected to the case 110 and communicates with the second passage; wherein, the first joint 141 and the second joint 142 are detachably connected.

It is understood that the first joint 141 and the second joint 142 are adapted to each other to achieve a detachable connection. The first joint 141 and the second joint 142 may be a ferrule type pipe joint, a flared pipe joint, a snap-fit type rubber pipe joint, or the like.

The first joint 141 is connected to the cooling member 130, and particularly, the first joint 141 may be directly connected to the cooling member 130, but of course, the first joint 141 may be indirectly connected to the cooling member 130 through an intermediate connecting member such as a pipe; the connection between the second joint 142 and the box 110 is also the same, and the description thereof is omitted.

The cooling member 130 and the case 110 are detachably communicated by the first and

second connectors

141 and 142 to achieve the detachable communication of the first and second passages, improve the assembly efficiency of the battery 100, and facilitate maintenance and repair.

In other embodiments, the connection assembly 140 may also be a conventional connection, such as a threaded connection, a flanged connection, or the like.

Referring to fig. 8 and 9, according to some embodiments of the present application, the battery 100 optionally includes a first conduit 160 and/or a second conduit 170. One end of the first pipe 160 is communicated with the first joint 141, and the other end is communicated with the first passage; and/or a second pipe 170, one end of the second pipe 170 is communicated with the second joint 142, and the other end is communicated with the second channel; wherein the first conduit 160 and/or the second conduit 170 are flexible tubes.

Specifically, as shown in fig. 9, the battery 100 includes a first duct 160, one end of the first duct 160 communicates with the first joint 141, the other end communicates with the first passage, and the first duct 160 is a flexible tube. Optionally, the battery 100 may further include a fourth connector (not shown), through which the first channel is connected to the first pipe 160, and the optional fourth connector may be detachably connected to the first pipe 160, so as to facilitate replacement and maintenance of the first pipe 160.

Alternatively, in some embodiments, as shown in fig. 8 and 9, the battery 100 includes a second conduit 170, one end of the second conduit 170 communicates with the second joint 142, the other end communicates with the second channel, and the second conduit 170 is a flexible tube. Optionally, as shown in fig. 6, the battery 100 may further include a third joint 143, the connection between the second channel and the second pipe 170 is achieved through the third joint 143, and optionally, the third joint 143 and the second pipe 170 may be detachably connected, so as to facilitate replacement and maintenance of the second pipe 170;

of course, in some embodiments, as shown in fig. 9, the battery 100 may also include a first duct 160 and a second duct 170, wherein the first duct 160 has one end communicating with the first joint 141 and the other end communicating with the first channel, the second duct 170 has one end communicating with the second joint 142 and the other end communicating with the second channel, and at least one of the first duct 160 and the second duct 170 is a flexible tube.

The flexible tube may be made of a flexible material, such as a rubber material, a plastic hose, or the like.

In the embodiment as shown in fig. 3 to 8, the battery 100 includes a first duct 160, one end of the first duct 160 communicates with the first joint 141, the other end communicates with the first passage, and the first duct 160 is a flexible tube.

By providing the flexible tube between the cooling member 130 and the case 110, functions of facilitating assembly, absorbing assembly tolerance, and absorbing energy of a vibration and impact condition are achieved by using a flexible and deformable characteristic of the flexible tube, and manufacturability and mechanism reliability are improved.

Referring to fig. 5 and 6, according to some embodiments of the present disclosure, optionally, the box body 110 includes a plurality of side plates 113, the side plates 113 enclose to form the accommodating cavity 111, a second channel is formed in the side plates 113, and the cooling member 130 is detachably connected to an inner side of the side plates 113.

In some embodiments, the case 110 may further include a bottom plate, and the bottom plate, the side plates 113 and the cover 150 jointly enclose a receiving cavity 111 for placing the battery cells 120, the cooling member 130 and the like.

Through detachably connecting box 110 and cooling piece 130 to the inside of curb plate 113, can make the position of cooling piece 130 in holding chamber 111 fixed on the one hand, avoid the cooling plate aversion in battery 100 use, on the other hand, can be convenient for box 110 and cooling plate assembly and disassembly, be convenient for improve battery 100 assembly efficiency.

Referring to fig. 6, according to some embodiments of the present disclosure, optionally, the inner side of the side plate 113 is provided with a connecting groove 112, and an end of the cooling member 130 close to the side plate 113 is received in the connecting groove 112, so as to detachably connect the cooling member 130 and the inner side of the side plate 113.

The connecting slot 112 is disposed on the inner side of the side plate 113, and may be a groove formed by recessing the inner side surface of the side plate 113, or a groove formed between two connected protrusions by protruding the inner side surface of the side plate 113, in the embodiment shown in fig. 5 and 6, the connecting slot 112 protrudes from the inner side surface of the side plate 113, which is more convenient to process compared with the disposing manner of recessing the side plate 113.

By providing the coupling groove 112 at the inner side of the side plate 113 and accommodating the end of the cooling member 130 in the coupling groove 112, the position of the cooling plate can be restricted to prevent the cooling plate from moving relative to the side plate 113, and the detachable coupling of the cooling member 130 and the side plate 113 can be realized.

According to some embodiments of the present application, a thermally conductive glue is optionally filled between the connecting groove 112 and the cooling member 130.

The heat-conducting adhesive has excellent cold and hot alternation resistance, aging resistance and electrical insulation performance, and has excellent moisture resistance, shock resistance, corona resistance, electric leakage resistance and chemical medium resistance. The heat-conducting glue can be continuously used at-60-280 ℃, keeps performance, does not swell, and has good adhesion to most of metal and non-metal materials.

Through filling heat-conducting glue between connecting groove 112 and cooling member 130, on the one hand, the heat-conducting property of heat-conducting glue can improve the heat-conducting property of cooling member 130 and box 110 curb plate 113, is convenient for conduct the heat of cooling member 130 to curb plate 113, can improve the radiating effect, and on the other hand, the viscidity of heat-conducting glue can make the connection of cooling member 130 and connecting groove 112 more firm.

Referring to fig. 6, according to some embodiments of the present application, at least one end of the connection groove 112 is optionally provided with a guide structure 1121 to facilitate assembly of the cooling member 130 and the side plate 113.

To facilitate assembly of the cooling member 130, in the embodiment shown in fig. 6, a guide structure 1121 is located at the top end of the coupling groove 112. In other embodiments, the guiding structure 1121 may also be provided at the other end of the coupling groove 112, and the cooling member 130 is inserted from the other end toward the tip end to be fitted to the coupling groove 112. In other embodiments, the guiding structure 1121 may be disposed at both ends of the connecting slot 112.

In the embodiment shown in fig. 6, the guiding structure 1121 is designed to have a funnel-shaped structure, the width of the opening of the guiding structure 1121 is larger, and the width of the guiding structure 1121 gradually decreases from the opening end to the other end of the connecting slot 112.

The assembly of the cooling member 130 to the side plate 113 may be facilitated by providing a guide structure 1121 at one end of the coupling groove 112.

Referring to fig. 5 and 6, according to some embodiments of the present application, optionally, the side plate 113 includes at least a first side plate 1131, a second side plate 1132 and a third side plate 1133, which are oppositely disposed. First and

second side plates

1131, 1132 are connected to cooling member 130 and communicate with the first channel; the third side plate 1133 is disposed adjacent to the first side plate 1131 and the second side plate 1132, and the third side plate 1133 is provided with a water inlet 114 and a water outlet 115 communicated with the second channel; the second channels of the first, second, and

third side plates

1131, 1132, and 1133 form a cooling circuit with the first channels of the cooling member 130.

The first side plate 1131, the second side plate 1132 and the third side plate 1133 are all hollow structures inside and form a second channel together. When the battery 100 is in a cooling state, the cooling liquid enters the second channel from the water inlet 114 of the third side plate 1133, and enters the second channel in one of the first side plate 1131 and the second side plate 1132 along the second channel, and enters the first channel of the cooling element 130 through the connecting assembly 140, after passing through the cooling element 130, enters the second channel in the other of the first side plate 1131 and the second side plate 1132 through the connecting assembly 140 at the other end of the cooling element 130, and then flows to the third side plate 1133 along the second channel, and is discharged out of the cooling loop through the water outlet 115, thereby completing the flow of the cooling liquid. It will be appreciated that the cooling fluid may be cooling water, other fluids that may be used for cooling, etc.

The second channel inside the first side plate 1131, the second side plate 1132 and the third side plate 1133 and the first channel of the cooling member 130 form a cooling loop, so that the cooling liquid can flow conveniently, the continuous cooling function of the battery cells 120 is realized, the occupied space of the cooling loop in the battery 100 can be reduced to a greater extent, and the structural strength and reliability of the cooling loop are higher.

In other embodiments, the side plate 113 may include a first side plate 1131 and a second side plate 1132, the first side plate 1131 and the second side plate 1132 are oppositely disposed, and the first side plate 1131 and the second side plate 1132 are respectively connected to two ends of the cooling member 130. First side plate 1131 and second side plate 1132 are both hollow structures and form a second channel, and the second channels of first side plate 1131 and second side plate 1132 are both communicated with the first channel of cooling member 130 and form a cooling circuit. One of the first side plate 1131 and the second side plate 1132 provides the water inlet 114, and the other of the first side plate 1131 and the second side plate 1132 provides the water outlet 115.

When the cooling liquid flows, the cooling liquid enters the second channel from the water inlet 114 in one of the first side plate 1131 and the second side plate 1132, enters the first channel of the cooling element 130 through the connecting assembly 140, and flows out from the other end of the cooling element 130 into the water outlet 115 in the other one of the first side plate 1131 and the second side plate 1132, so that the flow of the cooling liquid is completed.

According to some embodiments of the present application, referring to fig. 2 to 8, the present application provides a battery 100 including a case 110, a battery cell 120 disposed inside the case 110, and a cooling member 130. The cooling member 130 is detachably coupled to the inner side of the side plate 113 of the case 110. The case 110 has a hollow structure and forms a second passage therein, and the cooling member 130 has a first passage therein, and the first passage and the second passage are detachably communicated. The first channel and the second channel are communicated to form a cooling loop, so that the cooling liquid can flow conveniently, and the cooling function of the battery cell 120 is realized. Such an arrangement can reduce the space occupied by the cooling circuit in the battery 100 to a greater extent, and the case 110 has a stronger structure than a tubular cooling circuit, and the case 110 forms the second channel to improve the reliability of the structural strength of the cooling circuit.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application, and are intended to be covered by the claims and the specification of the present application. In particular, the features mentioned in the embodiments can be combined in any manner, as long as no structural conflict exists. This application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A battery, comprising:

a box body (110) provided with an accommodating cavity (111);

the number of the battery single bodies (120) is multiple, and the multiple battery single bodies (120) are arranged in the accommodating cavity (111) along a preset direction;

the cooling piece (130), the cooling piece (130) is arranged on at least one side of the battery unit (120) along the preset direction, and a first channel is arranged inside the cooling piece (130);

wherein the box body (110) is a hollow structure so as to form a second channel on the box body (110), and the first channel is communicated with the second channel.

2. The battery of claim 1, wherein the first channel and the second channel are in removable communication via a connection assembly (140).

3. The battery according to claim 2, wherein the connection assembly (140) comprises:

a first joint (141), said first joint (141) being connected to said cooling member (130) and communicating with said first passage;

a second joint (142), the second joint (142) being connected to the tank (110) and communicating with the second passage;

wherein the first joint (141) is detachably connected with the second joint (142).

4. The battery (100) according to claim 3, wherein the battery comprises:

a first pipe (160), one end of the first pipe (160) is communicated with the first joint (141), and the other end is communicated with the first channel; and/or

A second conduit (170), one end of the second conduit (170) being in communication with the second fitting (142) and the other end being in communication with the second channel;

wherein the first conduit (160) and/or the second conduit (170) is a flexible tube.

5. The battery according to any one of claims 1 to 4, wherein the case (110) comprises a plurality of side plates (113), the plurality of side plates (113) enclose the accommodating cavity (111), the second channel is formed in the side plates (113), and the cooling member (130) is detachably connected to the inner sides of the side plates (113).

6. The battery according to claim 5, wherein the inner side of the side plate (113) is provided with a connecting groove (112), and the end of the cooling member (130) close to the side plate (113) is accommodated in the connecting groove (112) to realize the detachable connection of the cooling member (130) with the inner side of the side plate (113).

7. The battery according to claim 6, wherein a thermally conductive glue is filled between the connection groove (112) and the cooling member (130).

8. The battery according to claim 6, wherein at least one end of the coupling groove (112) is provided with a guide structure (1121) to facilitate the assembly of the cooling member (130) and the side plate (113).

9. Battery according to claim 5, characterized in that said side plates (113) comprise at least:

a first side plate (1131) and a second side plate (1132) which are oppositely arranged, wherein the first side plate (1131) and the second side plate (1132) are connected with the cooling piece (130) and are communicated with the first channel; and the combination of (a) and (b),

a third side plate (1133), wherein the third side plate (1133) is arranged adjacent to both the first side plate (1131) and the second side plate (1132), and the third side plate (1133) is provided with a water inlet (114) and a water outlet (115) which are communicated with the second channel;

the second channels of the first side plate (1131), the second side plate (1132), and the third side plate (1133) form a cooling circuit with the first channels of the cooling member (130).

10. An electric consumer, characterized in that it comprises a battery (100) according to any of claims 1-9, said battery (100) being adapted to provide electric energy.