CN217426892U - Battery cell structure and battery cell module - Google Patents

Abstract

The application relates to the technical field of batteries, especially, relate to an electricity core structure and electric core module, electricity core structure includes: a first body member; the second main body component is arranged on one side of the first main body component, a closed space is formed between the first main body component and the second main body component, and the closed space contains an electrode material; the heat conduction assembly is arranged on one side, away from the second main body component, of the first main body component and used for absorbing heat of the first main body component or transferring heat to the first main body component. The application provides an electric core structure compares in traditional mode of wholly carrying out the thermal cycle to electric core module, is showing single electric core structure and the holistic heat conduction effect of battery module and heat conduction efficiency of improvement.

Description

Battery cell structure and battery cell module

Technical Field

The application relates to the technical field of batteries, in particular to an electric core structure and an electric core module.

Background

In recent years, with the development of new lithium ion battery technologies, the energy density of a battery core is higher and higher, the standard of thermal runaway is relatively improved, the requirement on the heat dissipation of a battery is improved, the heat dissipation of the existing battery module is carried out through bottom liquid cooling, and the heat conduction process is relatively slow. In addition, under the lower environment of temperature such as winter, still need carry out the intensification of certain degree to electric core, current battery all adopts to carry out heat conduction to electric core module whole at cooling down and intensification process, but this kind of traditional heat conduction mode then is used limitedly to the condition that electric core energy density is high, influences the heat dissipation to electric core and the efficiency of heat preservation process.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a battery core structure and electric core module to solve the heat dissipation, the heat preservation inefficiency of current electric core, battery module that exist among the prior art to a certain extent, influence the technical problem of battery security easily.

The application provides a battery cell structure, include: a first body member;

a second body member provided on one side of the first body member, the first body member and the second body member forming a closed space therebetween, the closed space containing an electrode material therein;

the heat conduction assembly is arranged on one side, facing away from the second main body component, of the first main body component and is used for absorbing heat of the first main body component or transferring heat to the first main body component.

In the above technical solution, further, the heat conduction assembly includes: the integrated plate is connected with the first body component, and a sealed space is formed between the integrated plate and the first body component.

In any one of the above technical solutions, further, the heat conduction assembly further includes a liquid cooling pipe, the liquid cooling pipe is disposed in the sealed space, the liquid cooling pipe has a continuous S-shaped structure, and a liquid working medium is injected into the liquid cooling pipe.

In any of the above technical solutions, further, a continuous S-shaped protrusion is disposed on a side surface of the integration plate facing the first main body member, the protrusion forms a flow channel in the sealed space, and a liquid working medium flows in the flow channel.

In any of the above technical solutions, further, a side wall of the first main body member or a side wall of the manifold plate is provided with a liquid inlet and a liquid outlet at an interval.

In any one of the above technical solutions, further, the first body member has a rectangular plate structure, the rectangular plate structure of the body member includes six wall surfaces, and two wall surfaces with the largest area among the six wall surfaces are respectively a first wall surface and a second wall surface;

the second body member is disposed on the first wall surface, and the integrated board is disposed on the second wall surface.

In any of the above technical solutions, further, the second main body member has a groove structure, the first wall surface is formed with a groove, and the opening shape of the groove structure is adapted to the shape of the groove.

In any of the above technical solutions, further, a first pole is disposed at one end of the first main body member, the first pole is provided with a first pole cover plate, and the first pole cover plate is fixedly connected to the first main body member;

the other end of the first main body component is provided with a second pole, the second pole is provided with a second pole cover plate, and the second pole cover plate is fixedly connected with the first main body component.

In any of the above technical solutions, further, the first pole and the first pole cover plate are disposed on the first wall surface; the second pole column and the second pole column cover plate are arranged on the second wall surface.

The application also provides a battery cell module, including any one of the above technical scheme the battery cell structure, therefore, have all beneficial technical effects of this battery cell structure, here, no longer give unnecessary details.

Compared with the prior art, the beneficial effect of this application is:

the application provides a battery cell structure includes: a first body member; the second main body component is arranged on one side of the first main body component, a closed space is formed between the first main body component and the second main body component, and the closed space contains an electrode material; the heat conduction assembly is arranged on one side, away from the second main body component, of the first main body component and used for absorbing heat of the first main body component or transferring heat to the first main body component.

The application provides an electric core structure has better heat conduction effect between heat conduction assembly and the first main part component, through carrying out high efficiency, high-quality cooling or heat preservation to single electric core structure to can cool down this electric core structure in time, cool off when guaranteeing this electric core structure temperature rise, avoid appearing the thermal runaway, when needing to keep warm or heat up to electric core structure, also can fully guarantee efficiency, ensure that this electric core structure can normally work under the low temperature trades. The application provides an electricity core structure compares in traditional mode of wholly carrying out the thermal cycle to electric core module, is showing and is improving single electric core structure and holistic heat conduction effect of battery module and heat conduction efficiency.

The application provides an electricity core module, including the aforesaid electricity core structure, therefore, can show through this electricity core structure and improve the cooling of the whole and each electricity core structure in the electricity core module of electricity core module, the effect that keeps warm to make electricity core module can in time cool off after generating heat, ensure the security of electricity core module, and under the low temperature operating mode, electricity core module also can normally work.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a cell structure provided in an embodiment of the present application;

fig. 2 is a schematic view of another view of a cell structure provided in an embodiment of the present application;

fig. 3 is an exploded view of a cell structure provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a portion of a cell structure provided in an embodiment of the present application;

fig. 5 is a schematic diagram of two cell structures in a stacked state according to an embodiment of the present application.

Reference numerals:

1-a first main body component, 101-a groove, 102-a first installation part, 103-a second installation part, 104-a first pole column cover plate, 105-a second pole column cover plate, 2-a second main body component, 201-a cavity, 3-a heat conduction assembly, 301-an integrated plate, 302-a liquid cooling pipe, 303-a bulge, 4-a liquid inlet and 5-a liquid outlet.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.

The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. 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 application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

A cell structure and a cell module according to an embodiment of the present application are described below with reference to fig. 1 to 5.

Referring to fig. 1 to 5, an embodiment of the present application provides a cell structure, where the cell structure includes: the battery comprises a first main body component 1, a second main body component 2 and a heat conduction assembly 3, wherein the first main body component 1 and the second main body component 2 are connected with each other, the heat conduction assembly 3 is arranged on the first main body component 1, a closed space is formed between the first main body component 1 and the second main body component 2, and positive and negative electrode materials of a battery cell are arranged in the closed space. Second main part component 2 and heat conduction assembly 3 are located the both sides of first main part component 1 respectively, first main part component 1 and second main part component 2 form the shell of electric core jointly, the heat that produces in the electric core course of operation transmits to heat conduction assembly 3 through first main part component 1, then the heat is absorbed by heat conduction assembly 3 or transmits to outside this electric core structure through heat conduction assembly 3 to play the radiating effect, avoid this electric core structure and the battery module including a plurality of this electric core structures to take place thermal runaway.

Further, the second body member 2 is a groove structure having one side opened, and a cavity 201 is formed inside the second body member 2. Further, the first main body member 1 has a flat plate structure, two side surfaces with the largest area of the flat plate structure are respectively a first wall surface and a second wall surface, the first wall surface is arranged facing the second main body member 2, and the first wall surface is provided with a groove 101, the shape of the groove 101 is matched with the opening shape of the groove body structure of the second main body member 2, so that a closed space is formed between the cavity 201 of the second main body member 2 and the groove 101 of the first main body member 1 after the second main body member 2 and the first main body member 1 are connected with each other.

Preferably, the first body member 1 and the second body member 2 are connected by laser welding, brazing, or other welding, etc. to ensure a sealing effect therebetween.

Further, the length of the first body member 1 is greater than that of the second body member 2, along the length direction of the first body member 1, a first mounting portion 102 is formed between one end of the first body member 1 and one end of the second body member 2, a second mounting portion 103 is formed between the other end of the first body member 1 and the other end of the second body member 2, and the first mounting portion 102 and the second mounting portion 103 are used for arranging a pole. Specifically, the first mounting portion 102 is provided with a first pole, the first pole is connected with a positive electrode material (or a negative electrode material) in the closed space, and a first pole cover plate 104 is arranged on the first pole; second installation department 103 is provided with the second utmost point post, the second utmost point post is connected with negative pole material (or positive pole material) in the airtight space, and be provided with second utmost point post apron 105 on the second utmost point post, first utmost point post and first utmost point post apron 104 are fixed relatively first installation department 102 also is first main part component 1 position, second utmost point post and second utmost point post apron 105 are fixed relatively second installation department 103 also is first main part component 1, such structure is compared in conventional electric core structure, a plurality of this electric core structure when piling up in groups, can effectively reduce the condition that busbar and utmost point post welding are bad appears when using the busbar to connect the utmost point post of two electric core structures because of electric core height and length tolerance cause.

Preferably, the first pole and the first pole cover plate 104 are arranged on one side surface of the first mounting portion 102 facing away from the heat conducting assembly 3; second utmost point post and second utmost point post apron 105 set up the side surface that deviates from second main part component 2 at second installation department 103 for positive post (or negative pole), negative pole post (or positive pole) are regarded as respectively to first utmost point post and second utmost point post, and both set up on the first wall and the second wall of first main part component 1, and the wall dislocation arrangement that the utmost point post is located the difference can effectively avoid piling up positive negative pole when in groups and connect the mistake to lead to the short circuit at a plurality of electric core structures.

Further, the heat conducting assembly 3 comprises an integrated plate 301, the integrated plate 301 is disposed on a side surface of the first main body member 1 facing away from the second main body member 2, the integrated plate 301 has a groove structure, and the integrated plate 301 is buckled on the first main body member 1, so that a sealed space is formed between the integrated plate 301 and the first main body member 1.

In addition, the integration plate 301 and the second body member 2 are respectively disposed on two large faces of the first body member 1, so that the integration plate 301 and the first body member 1 have the largest contact area therebetween as a heat conduction area, and the heat conduction effect and the heat conduction efficiency between the integration plate 301 and the first body member 1 are further enhanced.

Preferably, the integrated plate 301 and the first body member 1 are connected by laser welding, brazing, or other welding methods to ensure a sealing effect therebetween.

In addition, it should be noted that, the diapire face of the cell body structure of second main part component 2 levels, and the planking face of integrated board 301 is the plane equally, makes when a plurality of electric core structures pile up in proper order and form electric core module, and arbitrary adjacent electric core structure can laminate each other, thereby improves the quality of electric core module, and an electric core structure at the end is as the holistic end of electric core module, also is showing the roughness that improves the whole bottom of electric core module, is convenient for follow-up PACK in order to constitute the battery package.

Further, the heat conducting assembly 3 further includes a liquid cooling tube 302, preferably, the liquid cooling tube 302 has a continuous S structure or a continuous U-shaped structure, more preferably, the liquid cooling tube 302 has a continuous bending structure through itself, the whole sealing space at the edge of the heat conducting range, and liquid working medium flows in the liquid cooling tube 302 in a circulating manner, when the electric core structure needs heat dissipation and cooling, a liquid working medium with a lower temperature is introduced into the liquid cooling tube 302, along with the flow of the liquid working medium in the liquid cooling tube 302, the heat conducting assembly 3 can effectively absorb heat generated by each electric core structure, so as to cool and cool each electric core structure in the battery module including a plurality of electric core structures, thereby ensuring the heat absorption and dissipation effects and efficiency of a single electric core structure and the whole battery module, and the large surface of the first main body member 1 is used as a heat conducting surface with the heat conducting assembly 3, further improve heat conduction effect and efficiency, and then improve the security of battery package.

When need keep warm or the intensification of certain degree to the battery, to liquid cold tube 302 through the liquid working medium that has the uniform temperature after the intensification, liquid working medium's temperature can transmit to first main part component 1 and whole electric core structure to keep warm or heat up this electric core structure, ensure this electric core structure and the battery module including a plurality of this electric core structures can normally work under low temperature environment.

Alternatively, after the integrated board 301 and the first body member 1 are connected to each other, the protrusions 303 on the board surface of the integrated board 301 form a continuous S-shaped or U-shaped flow channel in the sealed space, and the liquid working medium is injected to have the same or similar effect as the liquid cooling pipe 302.

Further, a liquid inlet 4 and a liquid outlet 5 are arranged on one side edge of the first main body member 1 or the integrated board 301 at intervals, the liquid inlet 4 is communicated with one end port of the liquid cooling pipe 302 or the flow channel, the liquid outlet 5 is communicated with the other end port of the liquid cooling pipe 302 or the flow channel, and preferably, the liquid inlet 4 and the liquid outlet 5 are connected with a liquid cooling system of the whole battery cell module or a liquid cooling system of the whole PACK box body, so that liquid working media can circularly flow in the liquid cooling pipe 302 or the flow channel.

To sum up, the electric core structure that this application provided has better heat conduction effect between heat conduction assembly and the first main part component, through carrying out high efficiency, high-quality cooling or heat preservation to single electric core structure to ensure that this electric core structure can lower the temperature, cool off this electric core structure in time when rising in temperature, avoid appearing the thermal runaway, when needing to keep warm or heat up electric core structure, also can fully guarantee efficiency, ensure that this electric core structure can normally work under the low temperature trades. The application provides an electric core structure compares in traditional mode of wholly carrying out the thermal cycle to electric core module, is showing single electric core structure and the holistic heat conduction effect of battery module and heat conduction efficiency of improvement.

The embodiment of this application still provides an electricity core module, including above-mentioned arbitrary embodiment electricity core structure, the quantity of electricity core structure be a plurality of, a plurality of electricity core structures are piled up in order, and the utmost point post of two adjacent electricity core structures passes through the busbar and connects, and the electricity core module that this application provided has whole beneficial technological effects of above-mentioned electricity core structure, here, no longer gives unnecessary details.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A cell structure, comprising:

a first body member;

a second body member provided on one side of the first body member, the first body member and the second body member forming a closed space therebetween, the closed space containing an electrode material therein;

the heat conduction assembly is arranged on one side, facing away from the second main body component, of the first main body component and is used for absorbing heat of the first main body component or transferring heat to the first main body component.

2. The cell structure of claim 1, wherein the thermally conductive assembly comprises: the integrated plate is connected with the first body component, and a sealed space is formed between the integrated plate and the first body component.

3. The cell structure of claim 2, wherein the heat conducting assembly further comprises a liquid cooling pipe, the liquid cooling pipe is disposed in the sealed space, the liquid cooling pipe has a continuous S-shaped structure, and a liquid working medium is injected into the liquid cooling pipe.

4. The cell structure of claim 2, wherein a side surface of the integration plate facing the first body member is provided with a continuous S-shaped protrusion, the protrusion forms a flow channel in the sealed space, and a liquid working medium flows in the flow channel.

5. The cell structure of claim 3 or 4, wherein a side wall of the first body member or a side wall of the integration plate is provided with a liquid inlet and a liquid outlet at intervals.

6. The cell structure according to claim 2, wherein the first body member has a rectangular parallelepiped flat plate structure, the flat plate structure of the body member includes six walls, and two of the six walls with the largest area are a first wall and a second wall, respectively;

the second main body component is arranged on the first wall surface, and the integrated board is arranged on the second wall surface.

7. The cell structure of claim 6, wherein the second body member has a groove structure, the first wall surface is formed with a groove, and the opening shape of the groove structure is matched with the shape of the groove.

8. The cell structure according to claim 6, wherein a first pole is arranged at one end of the first body member, a first pole cover plate is arranged on the first pole, and the first pole cover plate is fixedly connected with the first body member;

the other end of the first main body component is provided with a second pole, the second pole is provided with a second pole cover plate, and the second pole cover plate is fixedly connected with the first main body component.

9. The cell structure of claim 8, wherein the first terminal post and the first terminal post cover plate are disposed on the first wall surface; the second pole column and the second pole column cover plate are arranged on the second wall surface.

10. A cell module comprising the cell structure of any one of claims 1 to 9;

the number of the cell structures is multiple, and the heat conduction assembly of each cell structure is in contact with the first main body component of another cell structure.

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