CN220753555U - Battery, battery pack and electric equipment - Google Patents

Abstract

The application discloses battery, battery package and consumer, belong to battery manufacturing technical field, including a roll core body, a roll core body has relative first face and second face that set up to and connect the third face of first face and second face, a roll core body has seted up the heat dissipation groove, and the heat dissipation groove runs through first face, second face and third face; the shell comprises a body and a heat conducting piece which are connected with each other, the body and the heat conducting piece enclose a containing cavity, the winding core body is arranged in the containing cavity, and the heat conducting piece is at least partially arranged in the heat radiating groove. The application is favorable to improving the radiating effect of the winding core body, thereby improving the service life and the safety performance of the battery.

Description

Battery, battery pack and electric equipment

Technical Field

The application belongs to the technical field of battery manufacturing, and particularly relates to a battery, a battery pack and electric equipment.

Background

In order to improve the battery capacity, the battery is larger and thicker in size, and the internal heat dissipation effect is poorer and worse than that of a battery with a small volume. If the battery can not dissipate heat in time, the internal temperature of the battery is increased continuously, so that the battery is damaged, the service performance of the battery is reduced, and even safety accidents are caused.

Disclosure of Invention

The utility model aims to: the embodiment of the application provides a battery, which aims to solve the technical problems; another object of the present application is to provide a battery pack using the above battery; another object of the present application is to provide an electric device using the above battery or battery pack.

The technical scheme is as follows: the battery according to the embodiment of the application comprises:

the coil core body is provided with a first surface, a second surface and a third surface, wherein the first surface and the second surface are oppositely arranged, the third surface is connected with the first surface and the second surface, the coil core body is provided with a heat dissipation groove, and the heat dissipation groove penetrates through the first surface, the second surface and the third surface;

the shell comprises a body and a heat conducting piece which are connected with each other, wherein an accommodating cavity is formed by the body and the heat conducting piece in a surrounding mode, the winding core body is arranged in the accommodating cavity, and the heat conducting piece is at least partially arranged in the heat radiating groove.

In some embodiments, the battery has a first direction, a second direction, and a third direction intersecting one another, the heat sink extending through the first face and the second face in the first direction and through the third face in the second direction;

the body is provided with a containing opening, the containing opening is communicated with the containing cavity, the body comprises a first wall and a second wall which are oppositely arranged in the first direction, and a third wall which is connected with the first wall and the second wall, the third wall faces the containing opening in the second direction, the winding core body is arranged between the first wall and the second wall, and the third face faces the containing opening;

the heat conducting piece is connected with the first wall and the second wall, a heat conducting channel is formed by enclosing the heat conducting piece, the heat conducting channel penetrates through the first wall and the second wall along the first direction, the heat conducting piece is separated from the accommodating opening and is provided with a first accommodating opening and a second accommodating opening along the third direction, and the heat conducting channel is positioned on one side, away from the winding core body, of the heat conducting piece, and the heat conducting piece is in heat conducting connection with the winding core body.

In some embodiments, the battery further comprises a first top cover and a second top cover, the first top cover covers the first receiving opening, and the second top cover covers the second receiving opening.

In some embodiments, the battery has a first direction, a second direction, and a third direction intersecting one another, the heat sink extending through the first face and the second face in the first direction and through the third face in the second direction;

the body is provided with a containing opening, the containing opening is communicated with the containing cavity, the body comprises a first wall and a second wall which are oppositely arranged in the first direction, and a third wall which is connected with the first wall and the second wall, the third wall faces the containing opening in the second direction, the winding core body is arranged between the first wall and the second wall, and the third face faces the third wall;

the heat conducting piece is connected with the first wall, the second wall and the third wall, the heat conducting piece encloses into a heat conducting channel, the heat conducting channel penetrates through the first wall and the second wall along the first direction and penetrates through the third wall along the second direction, the heat conducting channel is located at one side, away from the winding core body, of the heat conducting piece, and the heat conducting piece is connected with the winding core body in a heat conducting mode.

In some embodiments, the winding core body is provided with a plurality of heat dissipation grooves, and the shell comprises a plurality of heat conducting pieces, and the heat conducting pieces and the heat dissipation grooves are in one-to-one correspondence.

Correspondingly, the battery pack comprises the battery and a liquid cooling pipe, wherein the liquid cooling pipe is in heat conduction connection with the heat conduction piece.

In some embodiments, the plurality of batteries are arranged along a first direction, and the liquid cooling tube extends along the first direction and is in heat conduction connection with the heat conduction pieces of the plurality of batteries.

In some embodiments, the liquid cooling tube has a liquid cooling surface that conforms to the thermally conductive member.

In some embodiments, a temperature sensing probe is disposed between the liquid cooling tube and the thermally conductive member.

Correspondingly, the electric equipment comprises the battery or the battery pack.

The beneficial effects are that: according to the embodiment of the application, the heat dissipation groove is formed in the winding core body, so that the heat dissipation groove penetrates through the first face, the second face and the third face, the heat exchange face for exchanging heat with the outside is formed in the inner area of the winding core body, namely, the groove wall of the heat dissipation groove is formed, the winding core body is packaged through the shell, the heat conduction piece is arranged in the heat dissipation groove, the heat dissipation effect of the winding core body is improved through the heat conduction piece matched with the heat dissipation groove, and the service life and the safety performance of the battery are improved.

Drawings

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

Fig. 1 is a schematic view of the structure of a battery according to embodiment 1 of the present application;

fig. 2 is a schematic view of an exploded structure of a battery according to example 1 of the present application;

fig. 3 is a schematic structural diagram of a pole piece and a pole lug in embodiment 1 of the present application;

FIG. 4 is a schematic view showing the structure of a plurality of batteries and a liquid cooling tube according to embodiment 1 of the present application;

fig. 5 is a schematic view of the structure of a battery according to embodiment 2 of the present application;

fig. 6 is a schematic structural diagram of a pole piece and a pole tab in embodiment 2 of the present application;

fig. 7 is a schematic view of a battery of example 3 of the present application;

fig. 8 is a schematic view of an exploded structure of a battery according to example 3 of the present application;

fig. 9 is a schematic structural view of a pole piece and a pole tab in embodiment 3 of the present application;

fig. 10 is a schematic view of the structure of a battery according to embodiment 4 of the present application;

FIG. 11 is a schematic structural view of a winding core body according to embodiment 4 of the present application;

fig. 12 is a schematic view of the structure of a battery according to embodiment 5 of the present application;

fig. 13 is a schematic structural view of a winding core body according to embodiment 5 of the present application;

reference numerals: 1. a battery; 10. a winding core body; 100. a pole piece; 101. a heat sink; 102. a tab; 103. a first face; 104. a second face; 105. a third face; 11. a housing; 110. a body; 111. a heat conductive member; 1110. a heat conduction channel; 1111. a first section; 1112. a second section; 1113. a third section; 112. a receiving chamber; 113. a first wall; 114. a second wall; 115. a third wall; 116. a fourth wall; 117. a heat conduction hole; 118. a receiving port; 1180. a first receiving port; 1181. a second receiving port; 119. a pole; 12. an explosion-proof valve; 13. a first top cover; 14. a second top cover; 15. a top cover; 2. a liquid-cooled tube; 20. a temperature sensing probe; 21. liquid cooling surface; x, a first direction; y, second direction; z, third direction.

Detailed Description

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. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, and at least one means may be one, two or more, unless explicitly defined otherwise.

The applicant has noted that, in order to increase the capacity of the battery, the size and thickness of the battery are increased, and the internal heat dissipation effect is also decreased as compared with a small-sized battery. If the battery can not dissipate heat in time, the internal temperature of the battery can be continuously increased, the electrolyte can be decomposed and gas can be generated at high temperature, the battery shell can be inflated, side reactions, internal resistance increase, capacity water jump and the like can be generated on anode and cathode materials in the battery at high temperature, and the diaphragm shrinkage and potential safety hazard can be seriously caused, so that the battery is invalid, fires, explosions and the like can be generated.

In view of the above, embodiments of the present application disclose a battery that can address at least one of the above-described drawbacks.

Example 1:

referring to fig. 1 and 2, the battery includes a winding core body 10 and a case 11, wherein the winding core body 10 has a first surface 103 and a second surface 104 which are disposed opposite to each other, and a third surface 105 connecting the first surface 103 and the second surface 104, the winding core body 10 is provided with a heat dissipation groove 101, and the heat dissipation groove 101 penetrates through the first surface 103, the second surface 104 and the third surface 105; the shell 11 comprises a body 110 and a heat conducting piece 111 which are connected with each other, an accommodating cavity 112 is formed by enclosing the body 110 and the heat conducting piece 111, the winding core body 10 is arranged in the accommodating cavity 112, and the heat conducting piece 111 is at least partially arranged in the heat dissipation groove 101.

Through setting up heat dissipation groove 101 on rolling up core body 10, make heat dissipation groove 101 run through first face 103, second face 104 and third face 105 to make the interior region of rolling up core body 10 be formed with the heat transfer face with outside heat transfer, the cell wall of heat dissipation groove 101, package rolling up core body 10 through casing 11, and make heat-conducting piece 111 locate in heat dissipation groove 101, thereby cooperate heat dissipation groove 101 through heat-conducting piece 111 to improve the radiating effect of rolling up core body 10, be favorable to improving battery 1's life and security performance.

Specifically, in some embodiments, referring to fig. 1 and 2, the battery 1 has a first direction X, a second direction Y, and a third direction Z intersecting each other, the heat dissipation grooves 101 penetrate the first face 103 and the second face 104 along the first direction X, and penetrate the third face 105 along the second direction Y.

In this embodiment, the heat dissipation groove 101 extends upward from the middle of the winding core body 10 on the winding core body 10, that is, a U-shaped opening is formed on the winding core body 10, and it should be noted that, in the preparation process, as shown in fig. 3, the winding core body 10 includes a plurality of pole pieces 100 stacked in the first direction X, each pole piece 100 is cut in advance, and then after the pole pieces 100 are stacked with the diaphragm, the cut portion of the diaphragm opposite to the pole piece 100 is cut.

Referring to fig. 1 and 2, the top surface of the body 110 is provided with a receiving opening 118, the receiving opening 118 communicates with the receiving chamber 112, the body 110 includes a first wall 113 and a second wall 114 disposed opposite to each other in a first direction X, and a third wall 115 connecting the first wall 113 and the second wall 114, the third wall 115 being disposed toward the receiving opening 118 in a second direction Y, and the body 110 further includes two fourth walls 116 connected between the first wall 113 and the second wall 114 and disposed opposite to each other in the second direction Y.

In this embodiment, the third surface 105 faces the receiving opening 118, the heat conducting member 111 connects the first wall 113 and the second wall 114, specifically, in this embodiment, the heat conducting member 111 includes a first portion 1111, a second portion 1112 and a third portion 1113, where the first portion 1111 and the second portion 1112 are oppositely disposed in the third direction Z, and the third portion 1113 is connected to bottom ends of the first portion 1111 and the second portion 1112, so as to form a U-shaped structural member that is fit with the heat dissipation groove 101.

The first portion 1111, the second portion 1112 and the third portion 1113 enclose a heat conducting channel 1110, the heat conducting channel 1110 penetrates through the first wall 113 and the second wall 114 along the first direction X, the heat conducting member 111 separates the accommodating opening 118 and is formed with a first accommodating opening 1180 and a second accommodating opening 1181 in the third direction Z, the heat conducting channel 1110 is located at a side of the heat conducting member 111 away from the winding core body 10, and the heat conducting member 111 is connected with the winding core body 10 in a heat conducting manner.

Note that, the first portion 1111, the second portion 1112, and the third portion 1113 may be integrally formed and manufactured, and the material of the heat conductive member 111 may be the same as or different from that of the body 110, and the heat conductive member 111 and the body 110 may be fixedly connected by welding, as in fig. 2, in the first wall 113 and the second wall 114, the heat conductive holes 117 may be formed in advance in the first wall 113 and the second wall 114, and the heat conductive holes 117 may be used as positioning references, so that, for example, the second wall 114 may be welded with the heat conductive member 111 first, and then the first wall 113 and the second wall 114 may be welded after the winding core body 10 is attached to the second wall 114 and the heat conductive member 111. The heat conduction member 111 is directly connected with the inside of the winding core body 10 in a heat conduction manner, so that the heat dissipation effect of the inside of the battery 1 is improved. Note that the heat-conducting connection may be to separate the heat-conducting member 111 from the winding core body 10 by a heat-conducting adhesive or an insulating film.

In some embodiments, referring to fig. 2, the battery 1 further includes a first top cover 13 and a second top cover 14, the first top cover 13 is covered on the first accommodating opening 1180, the second top cover 14 is covered on the second accommodating opening 1181, the first top cover 13 and the second top cover 14 are respectively provided with a pole 119, the winding core body 10 has a pole lug 102, and the pole lug 102 is electrically connected to the pole 119. Specifically, one of the two electrode posts 119 is a positive electrode post, the other is a negative electrode post, and one of the tabs 102 corresponding to the winding core body 10 is a positive electrode tab, and the other is a negative electrode tab, which is not described herein.

In addition, referring to fig. 1 and 2, the first top cover 13 is further provided with an explosion-proof valve 12, so that the pressure is smoothly released from the explosion-proof valve 12 when the battery 1 is out of control, and the use safety of the battery 1 is improved.

The embodiment also discloses a battery pack, referring to fig. 4, which includes the battery 1 and the liquid cooling tube 2, it can be understood that the battery pack may have all the technical features and the corresponding beneficial effects of the battery 1, and will not be described herein.

Referring to fig. 4, the liquid cooling tube 2 penetrates the heat conducting channel 1110 in the first direction X, and the liquid cooling tube 2 is connected with the heat conducting member 111, and the liquid cooling tube 2 can be externally connected with a refrigeration device to input a cooling medium into the liquid cooling tube 2, so as to contact with the heat conducting member 111 and exchange heat with the winding core body 10, thereby realizing rapid heat dissipation of the winding core body 10.

In some embodiments, referring to fig. 4, a plurality of cells 1 are provided, the plurality of cells 1 are arranged along a first direction X, and the liquid cooling tube 2 extends along the first direction X and is thermally connected to the thermally conductive members 111 of the plurality of cells 1.

Specifically, referring to fig. 4, the liquid cooling pipe 2 has a liquid cooling surface 21, and the liquid cooling surface 21 is bonded to the heat conductive member 111. In order to increase the cooling effect, a heat-conducting glue can be coated between the liquid cooling surface 21 and the heat-conducting member 111 to fill the gap between the contact surfaces of the liquid cooling surface 21 and the heat-conducting member 111, so that the liquid cooling surface 21 and the heat-conducting member 111 are completely attached and fully contacted, and the liquid cooling effect is improved.

It should be noted that, in other embodiments, the battery 1 may be connected to a separate refrigeration device, that is, one battery 1 is configured with one refrigeration device, so that the battery 1 with a large size and a large capacity may be used alone.

In addition, in some embodiments, the liquid cooling tube 2 can be optionally installed at the bottom and the side wall of the battery 1, and the liquid cooling tube can be used alone or in combination according to heat dissipation requirements.

In addition, referring to fig. 4, a temperature sensing probe 20 is provided between the liquid cooling tube 2 and the heat conductive member 111. The refrigerating equipment can monitor the internal temperature of the winding core body 10 at any time through the temperature sensing probe 20. When the temperature is about to exceed the working temperature of the battery 1, the refrigeration equipment can refrigerate a cooling medium, and the cooling medium circularly flows between the refrigeration equipment and the liquid cooling pipe 2 to cool the interior of the battery 1; in some embodiments, when the temperature is lower than the working temperature of the battery 1, the cooling medium can be heated by the cooling device, and the cooling medium circulates between the cooling device and the liquid cooling tube 2 to transfer heat to the battery 1, so that the battery 1 always works in a better temperature environment, and the service life and the safety performance of the battery 1 are improved.

The embodiment also discloses electric equipment, which comprises the battery 1 or the battery pack. It can be appreciated that the electric device may have all the technical features and corresponding beneficial effects of the battery 1 or the battery pack described above, and will not be described herein.

Example 2:

referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that: in this embodiment, the third surface 105 faces the third wall 115, the heat conducting member 111 connects the first wall 113, the second wall 114 and the third wall 115, and the heat conducting channel 1110 penetrates the first wall 113 and the second wall 114 along the first direction X and penetrates the third wall 115 along the second direction Y. The heat conducting channel 1110 divides the third wall 115 into two parts, and the third wall 115 can be integrally formed with the body 110 and the heat conducting member 111, so that the manufacturing efficiency of the whole housing 11 is improved, and the welding assembly steps of the third wall 115, the heat conducting member 111 and the like are simplified.

In some embodiments, referring to fig. 5 and 6, the battery 1 includes a top cover 15, where the top cover 15 is provided with a pole 119 and covers the receiving opening 118, and the winding core body 10 is electrically connected to the pole 119 through the pole lug 102.

Further, the explosion-proof valve 12 of the present embodiment is provided on the top cover 15 to secure the use safety of the battery 1, unlike embodiment 1.

Example 3:

referring to fig. 7 to 9, the present embodiment is different from embodiment 1 in that: in this embodiment, the heat dissipation groove 101 formed on the winding core body 10 is V-shaped, and the heat conduction member 111 only includes the first portion 1111 and the second portion 1112, and the bottom end of the first portion 1111 is directly connected with the bottom end of the second portion 1112 to form a V-shaped structure matching with the heat dissipation groove 101, which can be understood that in other embodiments, the heat dissipation groove 101 may be also polygonal, semicircular, etc., and the heat conduction member 111 may be matched with the heat dissipation groove 101, which is not described herein.

Example 4:

referring to fig. 10 and 11, the present embodiment is different from embodiment 1 in that: the roll core body 10 is provided with a plurality of heat dissipation grooves 101, the plurality of heat dissipation grooves 101 face the accommodating opening 118, the plurality of heat dissipation grooves 101 are arranged at intervals in the third direction Z, the corresponding shell 11 comprises a plurality of heat conduction pieces 111, the plurality of heat conduction pieces 111 are arranged at intervals in the third direction Z and are respectively connected with the body 110, and a plurality of heat conduction channels 1110 formed by the plurality of heat conduction pieces 111 are in one-to-one correspondence with the heat dissipation grooves 101.

It can be understood that, in this embodiment, taking three heat dissipation grooves 101 as an example, compared with embodiment 1, the three heat conducting members 111 disposed correspondingly separate the receiving openings 118 to form two openings besides the first receiving opening 1180 and the second receiving opening 1181, and a top cover structure needs to be added to seal the housing 11. Unlike embodiment 1, the explosion-proof valve 12 in this embodiment may be provided on an attached top cover structure.

It can be appreciated that the heat conducting channel 1110 is further added on the basis of embodiment 1, so that the heat exchanging surface between the inner area and the outer area of the winding core body 10 is further increased, and the heat dissipation effect of the winding core body 10 is improved.

Example 5:

referring to fig. 12 and 13, the difference between this embodiment and embodiment 2 is that the winding core body 10 is provided with a plurality of heat dissipation grooves 101, the heat dissipation grooves 101 face the third wall 115, the plurality of heat dissipation grooves 101 are arranged at intervals in the third direction Z, correspondingly, the housing 11 includes a plurality of heat conduction members 111, the plurality of heat conduction members 111 are arranged at intervals in the third direction Z and are respectively connected to the body 110, and a plurality of heat conduction channels 1110 formed by the plurality of heat conduction members 111 are in one-to-one correspondence with the heat dissipation grooves 101.

It can be appreciated that the heat conducting channel 1110 is further added on the basis of embodiment 2, so that the heat exchanging surface between the inner area and the outer area of the winding core body 10 is further increased, and the heat dissipation effect of the winding core body 10 is improved.

In addition, it is understood that in other embodiments, the plurality of heat dissipation grooves 101 may partially face the accommodating opening 118 and partially face the third wall 115, and the heat conductive members 111 of the corresponding connection body 110 may be engaged with the structure of the winding core body 10, which is not described herein.

The battery, the battery pack and the electric equipment provided by the embodiment of the application are described in detail, and specific examples are applied to explain the principle and the implementation of the application, and the description of the above embodiment is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A battery (1), characterized by comprising:

the winding core comprises a winding core body (10), wherein the winding core body (10) is provided with a first surface (103) and a second surface (104) which are oppositely arranged, and a third surface (105) which is connected with the first surface (103) and the second surface (104), the winding core body (10) is provided with a heat dissipation groove (101), and the heat dissipation groove (101) penetrates through the first surface (103), the second surface (104) and the third surface (105);

the shell (11), the shell (11) includes interconnect's body (110) and heat conduction spare (111), body (110) with heat conduction spare (111) enclose into and hold chamber (112), roll up core body (10) and locate hold in chamber (112), just heat conduction spare (111) are located at least part in heat dissipation groove (101).

2. The battery (1) according to claim 1, characterized in that,

the battery (1) is provided with a first direction (X), a second direction (Y) and a third direction (Z) which are intersected in pairs, the heat dissipation groove (101) penetrates through the first surface (103) and the second surface (104) along the first direction (X), and penetrates through the third surface (105) along the second direction (Y);

the body (110) is provided with a containing opening (118), the containing opening (118) is communicated with the containing cavity (112), the body (110) comprises a first wall (113) and a second wall (114) which are oppositely arranged in the first direction (X), and a third wall (115) which is connected with the first wall (113) and the second wall (114), the third wall (115) faces the containing opening (118) in the second direction (Y), the winding core body (10) is arranged between the first wall (113) and the second wall (114), and the third surface (105) faces the containing opening (118);

the heat conduction piece (111) is connected first wall (113) with second wall (114), heat conduction piece (111) enclose into have heat conduction passageway (1110), heat conduction passageway (1110) are followed first direction (X) runs through first wall (113) with second wall (114), heat conduction piece (111) are separated hold mouth (118) and be formed with first holding mouth (1180) and second holding mouth (1181) in third direction (Z), heat conduction passageway (1110) are located heat conduction piece (111) deviate from one side of core body (10), just heat conduction piece (111) heat conduction connection core body (10).

3. The battery (1) according to claim 2, characterized in that,

the battery (1) further comprises a first top cover (13) and a second top cover (14), the first top cover (13) is covered on the first accommodating opening (1180), and the second top cover (14) is covered on the second accommodating opening (1181).

4. The battery (1) according to claim 1, characterized in that,

the battery (1) is provided with a first direction (X), a second direction (Y) and a third direction (Z) which are intersected in pairs, the heat dissipation groove (101) penetrates through the first surface (103) and the second surface (104) along the first direction (X), and penetrates through the third surface (105) along the second direction (Y);

the body (110) is provided with a containing opening (118), the containing opening (118) is communicated with the containing cavity (112), the body (110) comprises a first wall (113) and a second wall (114) which are oppositely arranged in the first direction (X), and a third wall (115) which is connected with the first wall (113) and the second wall (114), the third wall (115) faces the containing opening (118) in the second direction (Y), the winding core body (10) is arranged between the first wall (113) and the second wall (114), and the third surface (105) faces the third wall (115);

the heat conduction piece (111) is connected first wall (113), second wall (114) and third wall (115), heat conduction piece (111) enclose into have heat conduction passageway (1110), heat conduction passageway (1110) are followed first direction (X) runs through first wall (113) with second wall (114), and are followed second direction (Y) runs through third wall (115), heat conduction passageway (1110) are located heat conduction piece (111) deviate from the one side of rolling up core body (10), just heat conduction piece (111) heat conduction connection roll up core body (10).

5. The battery (1) according to claim 1, characterized in that,

the coil core body (10) is provided with a plurality of heat dissipation grooves (101), the shell (11) comprises a plurality of heat conducting pieces (111), and the heat conducting pieces (111) and the heat dissipation grooves (101) are in one-to-one correspondence.

6. A battery pack comprising a battery (1) according to any one of claims 1 to 5, and a liquid cooling tube (2), the liquid cooling tube (2) being thermally connected to the thermally conductive member (111).

7. The battery pack of claim 6, wherein the battery pack comprises a plurality of battery cells,

the battery (1) is provided with a plurality of batteries (1) which are arranged along a first direction (X), and the liquid cooling pipe (2) extends along the first direction (X) and is in heat conduction connection with the heat conduction pieces (111) of the plurality of batteries (1).

8. The battery pack of claim 7, wherein the battery pack comprises a plurality of battery cells,

the liquid cooling pipe (2) is provided with a liquid cooling surface (21), and the liquid cooling surface (21) is attached to the heat conducting member (111).

9. The battery pack of claim 7, wherein the battery pack comprises a plurality of battery cells,

a temperature sensing probe (20) is arranged between the liquid cooling pipe (2) and the heat conducting piece (111).

10. A powered device, characterized by comprising a battery (1) as claimed in any of claims 1 to 5 or comprising a battery pack as claimed in any of claims 6 to 9.