CN219321436U - Battery cell - Google Patents

Abstract

The utility model belongs to the technical field of lithium batteries, and discloses a battery. According to the battery, the radiating component is sleeved on the outer side wall surface of the battery core body, the cooling medium is placed in the radiating channel arranged by the radiating component, a battery core cooling scheme used in the prior art is formed, and the driving piece in the inverse piezoelectric component is electrically connected with an external power supply.

Description

Battery cell

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a battery.

Background

The lithium ion battery is a high-new technology product, and is a novel high-capacity long-life environment-friendly battery with excellent product performance. Compared with nickel-cadmium and nickel-hydrogen batteries, the lithium ion battery has the advantages of high voltage, large specific energy, long cycle life, good safety performance, small white discharge, no memory effect, rapid charge and discharge, wide working temperature range and the like, so the lithium ion battery is a high-quality power source of new energy electric vehicles.

Most of lithium batteries are square in structure, and when large-current charging and discharging is carried out, the surface temperature of the battery core is easy to rise, so that the use of the battery core and surrounding electronic components is affected. In order to enhance the heat dissipation effect of the battery, the conventional lithium battery is often provided with a cooling chamber and a placement chamber inside a battery case, that is, a battery cell is placed in the placement chamber, the cooling chamber accommodates a cooling object in a static state, and the cooling chamber is sealed by a sealing cover.

However, the temperature of the cooling object rises after the cooling object absorbs the heat of the battery, and when the temperature of the cooling object is close to the temperature of the battery core, a part of heat is transferred to the cooling object with lower temperature, and another part of heat is emitted to the external environment, so that the heat dissipation effect of the battery is poor, and the experience of a user is poor.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that in the prior art, when the temperature of the static cooling object is close to the temperature of the battery cell, part of heat is transferred to the cooling object with lower temperature, and the other part of heat is emitted to the external environment, so that the heat dissipation effect of the battery is poor.

To this end, the present utility model provides a battery comprising:

the battery cell comprises a battery cell body, wherein the battery cell body is provided with an outer side wall surface;

the heat dissipation assembly is used for being sleeved on the outer side wall surface of the battery cell body, the heat dissipation assembly is provided with a heat dissipation channel, and a cooling medium is placed in the heat dissipation channel;

the inverse piezoelectric assembly comprises a driving piece, the driving piece is arranged in the heat dissipation channel, the driving piece is provided with at least two deformation parts, and any two deformation parts are oppositely arranged and have adjustable distance therebetween so as to drive a cooling medium to flow in the heat dissipation channel.

Alternatively, the battery described above,

the inverse piezoelectric assembly further comprises a valve member disposed within the heat dissipation channel and disposed proximate the deformation portion.

Alternatively, the battery described above,

also included is a thermoelectric assembly, the thermoelectric assembly comprising:

the conducting piece is communicated with the heat dissipation channel;

the thermoelectric piece is electrically connected with the battery cell body and comprises an anode structure and a cathode structure, the anode structure is sleeved on the outer side of the conducting piece, and the cathode structure is sleeved on the outer side of the anode structure;

and the separator is sleeved between the positive electrode structure and the negative electrode structure.

Alternatively, the battery described above,

the circuit board and the thermoelectric assembly are arranged at the head part of the battery core body at the same side;

and a thermal shield disposed between the circuit board and the thermoelectric assembly.

Alternatively, the battery described above,

the heat insulating piece is arranged at the head of the battery cell body and is provided with a mounting groove which is suitable for accommodating the conducting piece.

Alternatively, the battery described above,

the battery cell comprises a battery cell body, and is characterized by further comprising a heat conducting piece, wherein the heat conducting piece is sleeved on the outer side wall surface of the battery cell body and is arranged between the outer side wall surface of the battery cell body and the heat radiating component.

Alternatively, the battery described above,

the heat conducting piece is provided with a communication groove, the communication groove is communicated with the mounting groove, and the communication groove is used for accommodating the conducting piece.

Alternatively, the battery described above,

still include the heat preservation spare, the heat preservation spare is equipped with along the both sides open-ended installation cavity of electric core body direction of height, electric core body is placed in the installation cavity.

Alternatively, the battery described above,

the battery cell comprises a battery cell body, and is characterized by further comprising a short-circuit protection assembly, wherein the short-circuit protection assembly comprises a first protection piece and a second protection piece, the first protection piece is sleeved on the outer side wall surface of the battery cell body, and the second protection piece is covered on the opening part of the mounting cavity, which is far away from one side of the head of the battery cell body.

Alternatively, the battery described above,

the outer side wall surface of the battery cell body comprises a side wall surface and a lower end surface which are sequentially arranged along the height direction of the battery cell body;

the heat dissipation assembly includes: the battery cell comprises a battery cell body, a first heat dissipation part, a second heat dissipation part and a third heat dissipation part, wherein the first heat dissipation part is sleeved outside the side wall surface of the battery cell body, one of the second heat dissipation part and the third heat dissipation part is sleeved outside the side wall surface of the battery cell body and is close to one side of the head of the battery cell body, and the other of the second heat dissipation part and the third heat dissipation part is arranged outside the lower end surface.

The technical scheme provided by the utility model has the following advantages:

the utility model provides a battery which comprises a battery core body, a heat dissipation assembly and a reverse piezoelectric assembly. The battery cell body is provided with an outer side wall surface; the heat dissipation assembly is used for being sleeved on the outer side wall surface of the battery cell body, the heat dissipation assembly is provided with a heat dissipation channel, and a cooling medium is placed in the heat dissipation channel; the inverse piezoelectric assembly comprises a driving piece, the driving piece is arranged in the heat dissipation channel, the driving piece is provided with at least two deformation parts, any deformation parts are oppositely arranged, one deformation part is close to or far away from the other deformation part, or the two deformation parts are close to or far away from each other, so that the cooling medium is driven to flow in the heat dissipation channel.

According to the battery with the structure, the radiating component is sleeved on the outer side wall surface of the battery core body, the cooling medium is placed in the radiating channel arranged by the radiating component, so that a battery core cooling scheme used in the prior art is formed, and the driving piece in the inverse piezoelectric component is electrically connected with an external power supply.

Drawings

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

Fig. 1 is a schematic structural view of a battery according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

fig. 4 is a schematic structural diagram of a heat dissipation assembly in a battery according to an embodiment of the present utility model;

fig. 5 is a perspective view of a heat dissipation assembly in a battery provided by an embodiment of the present utility model;

FIG. 6 is a partial perspective view of a heat dissipating assembly in a battery provided by an embodiment of the present utility model;

FIG. 7 is an enlarged schematic view of portion C of FIG. 5;

fig. 8 is a schematic structural view of a deformation portion of a driving member in a battery according to an embodiment of the present utility model in an initial position;

fig. 9 is a schematic structural view of a deformation portion of a driving member in a battery according to an embodiment of the present utility model in a deformed position;

fig. 10 is a schematic structural view of a heat insulator in a battery according to an embodiment of the present utility model;

fig. 11 is a schematic structural view of a short-circuit protection assembly in a battery according to an embodiment of the present utility model;

fig. 12 is a schematic structural view of a heat conductive member in a battery according to an embodiment of the present utility model;

fig. 13 is a schematic structural diagram of a battery cell body in a battery according to an embodiment of the present utility model;

reference numerals illustrate:

1-an electric core body; 11-outer side wall surface; 111-sidewall surfaces; 112-lower end face;

2-a heat dissipation assembly; 21-a first heat sink; 22-a second heat sink; 23-a third heat sink; 24-heat dissipation channels;

3-inverse piezoelectric assembly; 31-a driving member; 311-deformation part; 32-valve member;

a 4-thermoelectric module; 41-conducting member; 42-thermoelectric element; 421-positive electrode structure; 422-negative electrode structure; 43-separator;

51-a circuit board;

61-insulation; 611-mounting slots;

71-a heat conducting member; 711-communicating groove;

8-a heat preservation piece;

9-a short-circuit protection assembly; 91-a first guard; 92-second protector.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a battery, as shown in fig. 1 to 13, including a battery cell body 1, a heat dissipation assembly 2, and a reverse piezoelectric assembly 3. Wherein, the battery cell body 1 is provided with an outer side wall surface 11; the heat dissipation assembly 2 is used for being sleeved on the outer side wall surface 11 of the battery cell body 1, the heat dissipation assembly 2 is provided with a heat dissipation channel 24, and a cooling medium is placed in the heat dissipation channel 24; the inverse piezoelectric assembly 3 comprises a driving piece 31, the driving piece 31 is arranged in the heat dissipation channel 24, the driving piece 31 is provided with at least two deformation parts 311, and the deformation parts 311 are oppositely arranged and have adjustable distance therebetween so as to drive the cooling medium to flow in the heat dissipation channel 24.

Specifically, in the battery provided in this embodiment, the adjustment manner of the space between any two deformation portions 311 may be that one deformation portion 311 moves, and the other deformation portion 311 remains unchanged, that is, one deformation portion 311 is close to or far from the other deformation portion 311; or is: both the deformation parts 311 move, i.e., the two deformation parts 311 approach or separate from each other, so that the space between the two deformation parts 311 decreases or increases.

It should be noted that, as one embodiment, as shown in fig. 8, when the deformation occurs at the initial position of the deformation portion 311, the space between the two deformation portions 311 gradually decreases, so that the deformation portion 311 may directly act on the cooling medium in the space, so that the cooling medium in the space is subjected to a thrust force, and the flow speed of the cooling medium in the heat dissipation channel 24 is further increased. Note that, in fig. 8, the direction of the arrow is the direction in which the cooling medium enters the two deformed portions 311; the arrows in the middle in fig. 9 are the cooling medium between the two deformation parts 311, and the movement direction after the deformation parts 311 are deformed, and the arrows in the two sides in fig. 9 are the cooling medium outside the two deformation parts 311, and the movement direction after the deformation parts 311 are deformed.

Further, the structure of the deformation portion 311 is not limited, and for cost reasons, a member for generating the inverse piezoelectric effect in the conventional micro-oscillator is used, and the member is placed in the heat dissipation channel 24. For example, in this embodiment, the component generating the inverse piezoelectric effect may be a quartz crystal oscillator, that is, after a voltage is applied to the positive and negative electrodes of the wafer of the quartz crystal oscillator, the wafer will deform, so as to reduce the space size in the space where the lens is located, so that the space pressure gradually increases, and further the pressure applied to the cooling medium after the pressure increases, thereby accelerating the flow speed of the cooling medium in the heat dissipation channel 24.

Specifically, the battery provided in this embodiment, the battery core body 1 includes a head portion for mounting electrical components, such as a positive electrode tab, a negative electrode tab, and the like; the battery cell body 1 further comprises a heat dissipation part, wherein the heat dissipation part is a part outside the head, the heat dissipation part comprises an outer side wall surface 11, and the heat dissipation assembly 2 is sleeved at the outer side wall surface 11.

It should be noted that, in the battery provided in this embodiment, the number of the heat dissipation channels 24 is not limited, and only the communication between the adjacent heat dissipation channels 24 is ensured. For example, in the present embodiment, the heat dissipation assembly 2 is provided with a plurality of heat dissipation channels 24, and it can be stated that a plurality of driving members 31 can be correspondingly selected at this time, only the driving members 31 are required to be placed in the heat dissipation channels 24, so that the plurality of driving members 31 work simultaneously, and the heat dissipation effect of the battery can be enhanced.

Specifically, as shown in fig. 1 to 9, the present embodiment provides a battery in which the flow direction of the cooling medium in the heat dissipation passage 24 in the heat dissipation assembly 2 is shown by the arrow in fig. 5. It should be noted that, the structure of the deformation portion 311 is not limited in the battery provided in this embodiment, and only the cooling medium is required to be driven to flow when the deformation is realized. In one embodiment, one side of the deformation portion 311 has an inclined surface.

According to the battery provided by the embodiment, the heat dissipation component 2 is sleeved on the outer side wall 11 of the battery core body 1, and the cooling medium is placed in the heat dissipation channel 24 arranged in the heat dissipation component 2, so that a battery core cooling scheme used in the prior art is formed, and the driving piece 31 in the inverse piezoelectric component 3 is electrically connected with an external power supply, and because the inverse piezoelectric component 3 is placed in any one of the heat dissipation channels 24, when the driving piece 31 is electrified, the deformation parts 311 of the driving piece 31 can be close to or far away from each other in opposite directions so as to generate driving force for driving the cooling medium placed in the heat dissipation channels 24 to flow, the cooling medium is promoted to flow, the temperature difference of the cooling medium in each area is small, the phenomenon that part of the cooling medium in the prior scheme rises quickly and dissipates heat to the outside is avoided, the time required when the temperature of the cooling medium rises and approaches the temperature of the battery core is prolonged, the battery performance is improved, and the experience and satisfaction of users are effectively improved.

As shown in fig. 6 to 9, in order to control the circulation of the cooling medium, the battery provided in this embodiment further includes a valve member 32, the valve member 32 being disposed in the heat dissipation path 24, and the valve member 32 being disposed near the deformation portion 311.

In the battery provided in this embodiment, the valve member 32 is not limited to be selected, so that the cooling medium can flow in one direction in the heat dissipation channel 24, the cooling medium is prevented from flowing backwards, the heat dissipation effect of the cooling medium is prevented from being affected, and the valve member 32 is often selected to be a one-way valve.

As shown in fig. 1, 3, 4, 6 and 7, in order to achieve energy saving, the battery provided in this embodiment uses the electric quantity inside the battery as much as possible for external electric appliances, and often includes a thermoelectric module 4, where the thermoelectric module 4 is disposed on the head side of the battery cell body 1, so that the heat dissipated outside the battery cell body 1 is fully utilized. In particular, in practice, the thermoelectric module 4 of the battery comprises a conducting member 41, a thermoelectric member 42 and a separator 43, the conducting member 41 being in communication with the heat dissipation channel 24; the thermoelectric piece 42 is connected with the battery core body 1, and the thermoelectric piece 42 comprises an anode structure 421 with two ends in a cylindrical structure and a cathode structure 422 with an overall structure in a cylindrical structure, meanwhile, the conducting piece 41 is a tubular piece with an overall cylindrical structure, one end of the anode structure 421 is sleeved on the outer side of the conducting piece 41, and the cathode structure 422 is sleeved on the outer side of the other end of the anode structure 421; the separator 43 has a cylindrical structure as a whole, and the separator 43 is sleeved between the positive electrode structure 421 and the negative electrode structure 422.

It may be noted that, since some electric components, such as an indicator light, etc., are present in the battery, the electric energy generated by the thermoelectric element 42 may be supplied to the functional components, so as to achieve the purpose of energy saving.

It should be noted that, in the battery provided in this embodiment, the material of the conducting member 41 is not limited, in order to fully utilize the heat dissipated from the battery core body 1 to the cooling medium, the conducting member 41 made of a thermal-electric conversion material is usually selected, and then the conducting member 41 is electrically connected with the positive electrode structure 421 and the negative electrode structure 422, and meanwhile, the positive electrode structure 421 and the negative electrode structure 422 are electrically connected with other components, so that the heat dissipated from the battery core body 1 can be transferred to the conducting member 41 through the flow of the cooling medium in the heat dissipation channel 24 to be converted into electric energy for other components to continue to use, thereby realizing energy saving.

As shown in fig. 1 to 10, the battery provided in this embodiment further includes a circuit board 51 and a heat insulator 61. Wherein the circuit board 51 and the thermoelectric assembly 4 are arranged on the same side at the head of the battery cell body 1, and the heat insulator 61 is arranged between the circuit board 51 and the thermoelectric assembly 4.

It can be noted that, in the battery provided in this embodiment, when radiating, since the heat radiating structure is not used at the outer side of the head of the battery core body 1, in order to ensure that the heat conducted out of the battery core body 1 cannot be radiated into the battery core body 1 through the head so as to affect the use of the battery core body 1, at this time, a heat insulating member 61 is selectively arranged at the head of the battery core body 1, so that the thermoelectric assembly 4 and the battery core body 1 need to be provided with an installation cavity for installing the heat insulating member 61 at the head of the battery core body 1. Further, since the positive electrode structure 421, the separator 43, and the negative electrode structure 422 are sequentially sleeved outside the lead-through 41, the negative electrode structure 422 has the largest radial dimension when it is positioned at the outermost side, and thus it is necessary to provide the mounting groove 611 in the heat insulator 61, so that the negative electrode structure 422 can be placed in the mounting groove 611 when the lead-through 41 is short. Of course, in the present embodiment, since the length of the conductive member 41 is long, and the negative electrode structure 422 in the present embodiment is at the end of the conductive member 41 away from the head of the cell body 1, the mounting groove 611 is used to accommodate a part of the negative electrode structure 422.

As shown in fig. 1 to 13, in order to increase the heat dissipation effect of the battery cell body 1, the battery provided in this embodiment further includes a heat conductive member 71 made of a material that is easily heat conductive. The method comprises the following steps: the heat conducting member 71 is sleeved on the outer side wall 11 of the battery cell body 1, and is arranged between the outer side wall 11 of the battery cell body 1 and the heat dissipation assembly 2.

In the present embodiment, the heat conductive member 71 is provided with a communication groove 711, the communication groove 711 communicating with the mounting groove 611, the communication groove 711 accommodating the conductive member 41. Specifically, the communication groove 711 corresponds to the mounting groove 611 at the head position of the cell body 1, and communicates with the mounting groove to form a cavity that can accommodate the conductive member 41.

As shown in fig. 1 and 2, the battery provided in this embodiment further includes a heat insulating member 8, the heat insulating member 8 is provided with an installation cavity opening along two sides of the height direction of the battery cell body 1, and after the battery cell body 1 is placed in the installation cavity, the head of the battery cell body 1 extends to the outside of the opening, at this time, one side of the heat dissipating component 2 away from the head extends to the outside of the other opening.

As shown in fig. 1, 2 and 11, the battery provided in this embodiment is easy to short-circuit if the heat dissipation assembly 2 and the heat insulation member 8 are accidentally damaged during use, and therefore, the battery should further include a short-circuit protection assembly 9 including a first protection member 91 and a second protection member 92. Wherein, the first protection piece 91 is sleeved on the outer side wall 11 of the battery core body 1, and the second protection piece 92 is covered on the opening part of the installation cavity, which is arranged on one side far away from the head of the battery core body 1.

As shown in fig. 1 to 13, the battery provided in this embodiment has an outer side wall 11 of a battery cell body 1 including a side wall 111 and a lower end 112 which are disposed in this order in the height direction; the heat dissipation assembly 2 comprises a first heat dissipation element 21, a second heat dissipation element 22 and a third heat dissipation element 23, wherein the first heat dissipation element 21 is sleeved outside the side wall surface 111 of the battery cell body 1, one of the second heat dissipation element 22 and the third heat dissipation element 23 is sleeved outside the side wall surface 111 of the battery cell body 1 and is arranged close to one side of the head of the battery cell body 1, and the other of the two heat dissipation elements is arranged outside the lower end surface 112. Particularly at the time of installation, as in the present embodiment, the second heat sink 22 may be disposed outside the lower end face 112, and of course, in other alternative embodiments, the second heat sink 22 and the third heat sink 23 are interchanged, that is, the third heat sink 23 is disposed outside the lower end face 112.

It may be noted that, as shown in fig. 1, 2, 4 and 5, the heat dissipation channels 24 are correspondingly disposed in the first heat dissipation element 21, the second heat dissipation element 22 and the third heat dissipation element 23, where the heat dissipation channels 24 in the second heat dissipation element 22 and the third heat dissipation element 23 need to have a certain radian, and the heat dissipation channels 24 in the first heat dissipation element 21 are disposed in a tubular structure, so that after the first heat dissipation element 21, the second heat dissipation element 22 and the third heat dissipation element 23 are attached to the outer side wall 11 of the battery cell body 1, heat exchange with the battery cell body 1 is fully performed.

Further, the battery provided in the present embodiment does not limit the connection shape between the plurality of heat dissipation channels 24 when the heat dissipation channels 24 are provided. As one of the embodiments, the heat dissipation channels 24 are provided with two layers in total, the heat dissipation channels 24 of each layer are provided in an S-shape, and the heat dissipation channels 24 of the two layers are communicated with each other, that is, as shown in fig. 5. In the battery provided by the embodiment, during production, the circuit board 51 is installed on the battery core body 1 and is electrically connected with the positive electrode and the negative electrode at the head part of the battery core body 1; attaching the heat conductive member 71 to the cell body 1; mounting the inverse piezoelectric assembly 3 in the heat dissipation channel 24 of the heat dissipation assembly 2; mounting the thermoelectric module 4 on the heat dissipation module 2, and communicating the conductive member 41 with the heat dissipation channel 24 of the heat dissipation module 2; the heat insulation piece 61 is arranged in a mounting cavity arranged at the head of the battery cell body 1; the heat radiation component 2 is sleeved on the heat conduction piece 71; placing the initially assembled battery cell body 1 in a heat preservation piece 8; the first protector 91 is attached to a side wall surface of the heat insulating member 8, and the second protector 92 is attached to a side wall surface of the heat dissipating assembly 2 remote from the circuit board 51.

It should be noted that, the battery provided in this embodiment needs higher strength when being installed with an external battery compartment, and may also be provided with a housing, so that the battery can be suitable for the requirement of high strength, and only the assembled battery core body 1 needs to be placed in the housing when being installed; meanwhile, a limiting structure can be arranged in the shell, so that the battery core body 1 can not move, and the battery can be charged and discharged normally.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A battery, comprising:

the battery cell comprises a battery cell body (1), wherein the battery cell body (1) is provided with an outer side wall surface (11);

the battery cell comprises a battery cell body (1) and a heat dissipation assembly (2), wherein the battery cell body (1) is sleeved with the heat dissipation assembly (2), the heat dissipation assembly (2) is provided with a heat dissipation channel (24), and a cooling medium is placed in the heat dissipation channel (24);

the inverse piezoelectric assembly (3), the inverse piezoelectric assembly (3) comprises a driving piece (31), the driving piece (31) is arranged in the heat dissipation channel (24), the driving piece (31) is provided with at least two deformation parts (311), any two deformation parts (311) are oppositely arranged, the distance between the deformation parts is adjustable, and the cooling medium is driven to flow in the heat dissipation channel (24).

2. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells,

the inverse piezoelectric assembly (3) further comprises a valve member (32), the valve member (32) is arranged in the heat dissipation channel (24), and the valve member (32) is arranged close to the deformation part (311).

3. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells,

further comprising a thermoelectric assembly (4), the thermoelectric assembly (4) comprising:

-a conductive element (41), said conductive element (41) communicating with said heat dissipation channel (24);

the thermoelectric piece (42), the thermoelectric piece (42) is connected with the battery core body (1), and the thermoelectric piece (42) comprises an anode structure (421) and a cathode structure (422), the anode structure (421) is sleeved on the outer side of the conducting piece (41), and the cathode structure (422) is sleeved on the outer side of the anode structure (421);

and a separator (43), wherein the separator (43) is sleeved between the positive electrode structure (421) and the negative electrode structure (422).

4. The battery of claim 3, further comprising:

the circuit board (51) and the thermoelectric assembly (4) are arranged at the same side of the head of the battery cell body (1);

-a thermal insulation (61), the thermal insulation (61) being arranged between the circuit board (51) and the thermoelectric assembly (4).

5. The battery of claim 4, wherein the battery is provided with a plurality of electrodes,

the heat insulation member (61) is arranged at the head part of the battery cell body (1), the heat insulation member (61) is provided with a mounting groove (611), and the mounting groove (611) is suitable for accommodating the conducting member (41).

6. The battery of claim 5, wherein the battery is configured to provide the battery with a battery cell,

the battery cell structure further comprises a heat conducting piece (71), wherein the heat conducting piece (71) is sleeved at the outer side wall surface (11) of the battery cell body (1) and is arranged between the outer side wall surface (11) of the battery cell body (1) and the heat radiating component (2).

7. The battery of claim 6, wherein the battery is configured to provide the battery with a battery cell,

the heat conductive member (71) is provided with a communication groove (711), the communication groove (711) communicates with the mounting groove (611), and the communication groove (711) is configured to accommodate the conductive member (41).

8. The battery of claim 1, wherein the battery is configured to provide the battery with a plurality of cells,

still include heat preservation spare (8), heat preservation spare (8) are equipped with along the both sides open-ended installation cavity of electric core body (1) direction of height, electric core body (1) are placed in the installation cavity.

9. The battery of claim 8, wherein the battery is configured to provide the battery with a battery cell,

still include short-circuit protection subassembly (9), it includes first protection piece (91) and second protection piece (92), first protection piece (91) cover is established lateral wall face (11) of electric core body (1), second protection piece (92) lid is established in the installation cavity is kept away from the opening part that electric core body (1) head one side set up.

10. The battery according to any one of claims 1 to 9, wherein,

the outer side wall surface (11) of the battery cell body (1) comprises a side wall surface (111) and a lower end surface (112) which are sequentially arranged along the height direction of the battery cell body (1);

the heat dissipation assembly (2) includes: the battery cell comprises a first heat dissipation part (21), a second heat dissipation part (22) and a third heat dissipation part (23), wherein the first heat dissipation part (21) is sleeved outside a side wall surface (111) of the battery cell body (1), one of the second heat dissipation part (22) and the third heat dissipation part (23) is sleeved outside the side wall surface (111) of the battery cell body (1) and is close to one side of the head of the battery cell body (1), and the other of the second heat dissipation part and the third heat dissipation part is arranged outside a lower end surface (112).

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