Battery

Abstract

The embodiments of the present application relate to the technical field of energy storage. Provided is a battery. The battery comprises a frame, a first battery cell and a first liquid cooling plate. The frame encloses a cavity having an opening, the first battery cell is mounted in the cavity, and the first battery cell is connected to the inner wall of the cavity. The first liquid cooling plate is located at the opening and opposite the first battery cell. A first channel for the circulation of cooling liquid is provided in the frame, a second channel for the circulation of cooling liquid is provided in the first liquid cooling plate, and the first channel and the second channel are located on two opposite sides of the first battery cell. The battery achieves heat exchange for the battery cell by means of both the frame and the liquid cooling plate, such that the heat dissipation effect of the battery and the structural compactness of the battery can be ensured at the same time.

Description

A battery

[0001] The present application claims priority to the Chinese patent application No. 202422335070.4, filed on September 24, 2024, and entitled "A battery", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage, in particular to a battery. BACKGROUND

[0003] With the continuous development of electric vehicles, high-performance computing devices and other power-consuming devices, the safety and stability of batteries are becoming increasingly important. In order to avoid battery damage or performance degradation caused by overheating during discharging, heat exchange technology is generally used in batteries for cooling.

[0004] Liquid cooling technology is one of the most commonly used heat exchange technologies. The specific technical solution is to install a liquid cooling plate adjacent to the battery monomer in the battery pack. The liquid cooling plate is provided with a channel for the flow of cooling liquid. The cooling liquid continuously exchanges heat with the battery monomer when flowing in the channel, thereby dissipating heat from the battery to achieve the purpose of cooling.

[0005] However, in the current liquid cooling technology, the liquid cooling plate needs to be installed in the battery. When the number of liquid cooling plates is small, the overall heat dissipation effect of the battery is poor. When the number of liquid cooling plates is large, the installation process of the liquid cooling plate is complicated, and the volume and weight of the battery are large. Therefore, how to simultaneously ensure the heat dissipation effect of the battery and the compactness of the battery structure has become a technical problem to be solved.

[0006] Content of the utility model

[0007] The present application provides a battery. The frame of the battery is provided with a first channel for the flow of cooling liquid. The first liquid cooling plate is provided with a second channel for the flow of cooling liquid. The frame and the first liquid cooling plate jointly exchange heat with the first battery monomer, thereby ensuring the heat dissipation effect of the battery and the compactness of the battery structure.

[0008] The present application provides a battery. The battery comprises a frame, a first battery monomer and a first liquid cooling plate. The frame encloses a cavity with an opening. The first battery monomer is installed in the cavity and connected to the inner wall of the cavity. The first liquid cooling plate is located at the opening and opposite to the first battery monomer. The frame is provided with a first channel for the flow of cooling liquid. The first liquid cooling plate is provided with a second channel for the flow of cooling liquid. The first channel and the second channel are located on opposite sides of the first battery monomer.

[0009] In the battery, the frame and the first liquid cooling plate jointly exchange heat with the first battery monomer, thereby simultaneously ensuring the heat dissipation effect of the battery and the compactness of the battery structure.

[0010] In an alternative way, the first battery monomer is connected with the first inner wall of the cavity, and the first inner wall is opposite to the opening.

[0011] In this way, the first battery monomer is more convenient to install.

[0012] In an alternative way, the area of the surface of the first liquid cooling plate facing the first battery monomer is less than the area of the shell of the first battery monomer contacting the first inner wall.

[0013] In this way, the first liquid cooling plate is small enough, so that the structure of the battery is more compact.

[0014] In an alternative way, the cross-sectional area of the first channel is greater than the cross-sectional area of the second channel.

[0015] The cross-sectional area of the first channel is larger, which can make the frame fully heat exchange the first battery monomer part in the cavity. The cross-sectional area of the second channel is smaller, which can fully heat exchange the end of the first battery monomer opposite to the first liquid cooling plate, at the same time, make the first liquid cooling plate occupy less space, so that the overall structure of the battery is more compact.

[0016] In an alternative way, the first channel and the second channel are connected in series or in parallel.

[0017] When the first channel and the second channel are connected in series or in parallel, the cooling liquid can be injected into the first channel and the second channel at the same time through one injection port, and the cooling liquid in the first channel and the second channel can be discharged at the same time through one discharge port. The number of injection ports and discharge ports is small, the injection process and discharge process of the cooling liquid is simple, and it is convenient to control.

[0018] In an alternative way, the frame is a plastic frame, and / or the first liquid cooling plate is a plastic plate.

[0019] When the frame is a plastic frame, the frame is an insulator, which avoids the short circuit caused by the contact between the frame and the conductive part. When the first liquid cooling plate is a plastic plate, the first liquid cooling plate is an insulator, which avoids the short circuit caused by the contact between the first liquid cooling plate and the conductive part.

[0020] In an alternative way, the flow directions of the first channel and the second channel are consistent.

[0021] In this way, the cooling liquid can enter the first channel and the second channel from the same side, and flow out of the first channel and the second channel from the same side, which makes the distribution and collection of the cooling liquid more convenient.

[0022] In an alternative way, the battery further comprises a gasket, the gasket is located between the electrode terminal and the first liquid cooling plate, and the gasket is opposite to the first liquid cooling plate.

[0023] In this way, the first liquid cooling plate can exchange heat with the first battery monomer and the gasket at the same time, and the battery has better heat dissipation effect.

[0024] In an alternative way, the battery further comprises a second battery monomer and a second liquid cooling plate. The second battery monomer is installed in the cavity and connected with the inner wall of the cavity, and the second battery monomer is arranged side by side with the first battery monomer. The second liquid cooling plate is arranged side by side with the first liquid cooling plate and spaced apart, and the second liquid cooling plate is located at the opening and opposite to the second battery monomer. The second liquid cooling plate is provided with a third channel for the cooling liquid to flow through, and the first channel and the third channel are located on opposite sides of the second battery monomer.

[0025] In this way, the frame and the second liquid cooling plate jointly exchange heat with the second battery monomer, and the battery has better heat dissipation effect. Moreover, when multiple battery monomers are installed in the battery, the heat dissipation effect of the battery and the compactness of the structure of the battery can still be ensured at the same time.

[0026] In an alternative way, the battery further comprises a second battery monomer. The second battery monomer is installed in the cavity and connected with the inner wall of the cavity, and the second battery monomer is arranged side by side with the first battery monomer. The first channel and the second channel are located on opposite sides of the first battery monomer and the second battery monomer at the same time.

[0027] In this way, the first battery monomer and the second battery monomer are both exchanged heat by the frame and the first liquid cooling plate, which has less parts, is convenient to install, and can also ensure the heat dissipation effect of the battery and the compactness of the structure of the battery when multiple battery monomers are installed in the battery.

[0028] In the battery provided by the embodiment of the present application, the frame is provided with a first channel for the cooling liquid to flow through, the first liquid cooling plate is provided with a second channel for the cooling liquid to flow through, and the first channel and the second channel are located on opposite sides of the first battery monomer, so that the first battery monomer can exchange heat with the cooling liquid in the first channel and the second channel at the same time, thereby improving the heat exchange efficiency of the battery and having better heat dissipation effect. At the same time, since the frame of the battery also has heat exchange effect, the battery can be fully cooled by only adding a liquid cooling plate at the opening, and the battery has compact structure and is convenient to assemble, and the heat dissipation effect of the battery and the compactness of the structure of the battery can be ensured at the same time.

[0029] The above description is only a summary of the technical solutions of the embodiments of the present application, in order to more clearly understand the technical means of the embodiments of the present application, the embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the embodiments of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, 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 any creative effort on the basis of these drawings.

[0031] Fig. 1 is an exploded schematic view of a battery according to an embodiment of the present application.

[0032] Fig. 2 is a schematic view of the overall structure of the battery when assembled according to an embodiment of the present application.

[0033] Fig. 3 is a partial cross-sectional view of the position of a first battery cell in the battery according to an embodiment of the present application.

[0034] Fig. 4 is a partial cross-sectional view of the adjacent positions of a first battery cell and a second battery cell in the battery according to an embodiment of the present application.

[0035] Reference signs: 10, frame; 11, cavity; 12, first channel; 13, first inner wall; 20, first battery cell; 21, electrode terminal; 30, first liquid cooling plate; 31, second channel; 40, gasket; 50, second battery cell; 60, second liquid cooling plate; 61, third channel. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0037] Unless otherwise defined, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification of the present application and the description of the drawings are intended to cover the non-exclusive inclusion.

[0038] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is expressly understood that the embodiments described herein are merely example embodiments of the application and that a substantial number of specific structures, features, configurations, materials, and components other than those described herein are also intended to be within the scope of the application.

[0039] The term“and / or” in this article is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: there is A, there is A and B, and there is B. In addition, the character“ / ” in this article generally represents that the front and rear associated objects are an“or” relationship.

[0040] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the flow limiting module of the application. For example, in the description of the application, the terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”, and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0041] In addition, the terms“first”,“second”, and the like in the specification and claims of the application or the above drawings are used to distinguish different objects, and are not used to describe a particular order, and can explicitly or implicitly include one or more of the features.

[0042] In the description of the application, unless otherwise specified, the meaning of“a plurality of” is two or more (including two), and similarly,“a plurality of groups” means two or more groups (including two groups).

[0043] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connected" should be understood in a broad sense, for example, the "connection" or "connected" of mechanical structure can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by spacer, for example, fixed connection by screw, bolt or other spacer; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. The "connection" or "connected" of circuit structure can mean electrical connection or signal connection in addition to physical connection, for example, it can be direct connection, that is, physical connection, or indirect connection through at least one intermediate element, as long as the circuit is connected, it can also be the internal connection of two elements; signal connection can be signal connection through media medium in addition to electrical connection, for example, radio wave. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0044] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0045] In the embodiment, the battery can be a battery pack or a battery module. When the battery is a battery pack, the battery pack specifically includes a battery management system (BMS) and a plurality of battery monomers. The plurality of battery monomers can be electrically connected in series, parallel or a combination of series and parallel, and are communicatively connected with the battery management system to form the battery pack. The battery management system controls and monitors the working state of each battery monomer. In addition, the plurality of battery monomers can be first connected in series and / or parallel, and form a battery module with the module management system, and then a plurality of battery modules are electrically connected in series, parallel or a combination of series and parallel, and are connected with the battery management system to form the battery pack.

[0046] A plurality of battery monomers in a battery pack or a battery module can be mounted on a support structure such as a box, a frame, a bracket, etc. Each battery monomer can be electrically connected to another battery monomer or a battery management system through a busbar.

[0047] The battery provided in the application is specifically shown in FIG. 1, FIG. 2 and FIG. 3. FIG. 1 is an exploded schematic view of a battery according to an embodiment of the application, FIG. 2 is a schematic view of the overall structure of the battery when assembled according to an embodiment of the application, and FIG. 3 is a partial cross-sectional view of the position of a first battery monomer in the battery according to an embodiment of the application. The battery includes a frame 10, a first battery monomer 20 and a first liquid cooling plate 30.

[0048] The frame 10 is a support structure for providing support and mounting positions for battery monomers and liquid cooling plates and other components. The frame 10 encloses a cavity 11 with an open mouth, which is used to mount the battery monomers. The open mouth of the cavity 11 is an opening for the cavity 11 to communicate with the outside world, which is used to provide an operating space for the mounting process of the battery monomers and other components.

[0049] The frame 10 can be made of high-strength materials such as aluminum alloy profiles or steel profiles. The overall shape of the frame 10 can be set in many ways, such as a square frame structure, a circular frame structure, etc. The cavity 11 enclosed by the frame 10 can also be set to be square, circular, etc. according to requirements, which is not limited here.

[0050] The frame 10 is provided with a first channel 12 for the flow of cooling liquid, so that the frame 10 itself can exchange heat with the first battery monomer 20 to improve the heat dissipation efficiency of the battery. The wall thickness between the first channel 12 and the cavity 11 can be small, and the first channel 12 is arranged in a position close to the first battery monomer 20, so that the first channel 12 is adjacent to the first battery monomer 20, so that the cooling liquid flowing through the first channel 12 can directly exchange heat with the first battery monomer 20.

[0051] The first battery cell 20 is a component for storing electric energy, and specifically includes a battery case and an electrode assembly, and the electrode assembly is accommodated in the battery case. The electrode assembly is the smallest unit for performing an electrochemical reaction in the battery, and realizes charging and discharging of the battery cell, and generally includes a positive electrode sheet, a negative electrode sheet, and a separator for separating the positive electrode sheet and the negative electrode sheet. An electrolyte is injected into the battery case, and the electrolyte can be soaked into the inside of the electrode assembly, and provides an ion migration path for the electrode assembly to perform an electrochemical reaction and plays a role of conducting electricity. In addition, the battery case is generally provided with exposed electrode terminals including a positive electrode terminal and a negative electrode terminal, and the positive electrode terminal and the negative electrode terminal are respectively connected with the positive electrode sheet and the negative electrode sheet, so as to perform charging and discharging through the electrode terminals.

[0052] The first battery cell 20 is installed in the cavity 11, and the first battery cell 20 is connected with the inner wall of the cavity 11. Specifically, the battery case of the first battery cell 20 is connected with the inner wall of the cavity 11, so that the first battery cell 20 is fixed in the cavity 11, and one face of the first battery cell 20 faces outward of the opening, so as to arrange a tab or the like component at the opening of the cavity 11. A specific embodiment is shown in FIG. 3, and the tab 40 can be connected with the electrode terminal 21 of the first battery cell 20, the tab 40 is located between the electrode terminal 21 and the first liquid cooling plate 30, and the tab 40 is opposite to the first liquid cooling plate 30. In this way, the first liquid cooling plate 30 can simultaneously perform heat exchange for the first battery cell 20 and the tab 40, and the heat dissipation effect of the battery is better.

[0053] The first battery cell 20 can be connected with the inner wall of the cavity 11 by welding, bonding or the like. The first battery cell 20 can be connected on the side wall in the cavity 11. The first battery cell 20 can also be connected on the side opposite to the opening, as shown in FIG. 3, the first battery cell 20 is connected with the first inner wall 13 of the cavity 11, and the first inner wall 13 is opposite to the opening, so that the first battery cell 20 is installed more conveniently.

[0054] In a specific embodiment, the first end of the first battery cell 20 can be connected with the first inner wall 13 of the cavity 11, and the second end of the first battery cell 20 faces outward of the opening, and the first end and the second end are opposite ends of the first battery cell 20. Specifically, for example, the first end of the first battery cell 20 is the bottom end of the battery case of the first battery cell 20, and the second end of the first battery cell 20 is the end where the electrode terminal 21 is located.

[0055] In addition, the battery cell can be installed in the cavity 11 in a normal direction, that is, in the direction of gravity, the opening direction of the cavity 11 is upward, and the battery cell is installed in the cavity 11 in a manner that the bottom end of the battery case faces downward and the end of the electrode terminal 21 faces upward, and at this time, the first inner wall 13 opposite to the opening is the bottom of the cavity 11.

[0056] The battery cell can also be installed in the cavity 11 upside down, that is, in the direction of gravity, the opening direction of the cavity 11 is downward, the battery cell is installed in the cavity 11 with the bottom end of the battery shell upward and the electrode terminal 21 one end downward, at this time, the first inner wall 13 opposite to the opening is the top of the cavity 11.

[0057] The first liquid cooling plate 30 is a plate structure with a certain thickness, which can be specifically provided as a circular plate, a square plate, a long strip-shaped plate, etc. When the first liquid cooling plate 30 is connected to the frame 10, the specific connection mode can be threaded connection, clamping, welding, etc., which is not limited here.

[0058] The first liquid cooling plate 30 is located at the opening and opposite to the first battery cell 20, and the second passage 31 for the flow of cooling liquid is arranged in the first liquid cooling plate 30, so that the first liquid cooling plate 30 is adjacent to the first battery cell 20, and the cooling liquid flowing through the second passage 31 also exchanges heat with the first battery cell 20.

[0059] As shown in FIG. 3, the first passage 12 and the second passage 31 are located on opposite sides of the first battery cell 20. That is, the first passage 12 in the frame 10 is arranged in the inner wall opposite to the opening, that is, the first inner wall 13, so that the first battery cell 20 is located between the first passage 12 and the second passage 31, at this time, the frame 10 and the first liquid cooling plate 30 form a double-layer cooling structure. When the cooling liquid flows through the first passage 12 and the second passage 31 at the same time, the first battery cell 20 can be cooled in multiple directions, thereby improving the heat dissipation effect of the battery. At the same time, since the frame 10 also has a heat exchange effect, only the first liquid cooling plate 30 needs to be installed at the opening to make the first battery cell 20 fully cooled, the structure of the battery is compact, and the battery can be installed conveniently while ensuring the heat dissipation effect of the battery and the compactness of the structure of the battery.

[0060] The first passage 12 and the second passage 31 can each include one or more passages. The flow cross section of the first passage 12 and the second passage 31 can be specifically provided as a circular shape, an elliptical shape, etc., and the flow cross section area of the first passage 12 can be the same as or different from that of the second passage 31. The flow cross section is the cross section perpendicular to the direction of the flow of the cooling liquid.

[0061] In a specific embodiment, the flow cross section area of the first passage 12 can be greater than that of the second passage 31. The flow cross section area of the first passage 12 is larger, which can cool and dissipate heat of the part of the first battery cell 20 located in the cavity 11 sufficiently. The flow cross section area of the second passage 31 is smaller, which can ensure the heat dissipation effect of the end of the first battery cell 20 opposite to the first liquid cooling plate 30 while making the space occupied by the first liquid cooling plate 30 smaller, thereby making the overall structure of the battery more compact.

[0062] In this embodiment, the first channel 12 and the second channel 31 can be not connected to each other, so as to be independently injected with the cooling liquid. Alternatively, the first channel 12 and the second channel 31 can be connected, such as being connected in series or in parallel.

[0063] The first channel 12 and the second channel 31 are connected in series, that is, the first channel 12 and the second channel 31 are connected end to end. For example, the outlet of the first channel 12 and the inlet of the second channel 31 can be connected, or the outlet of the second channel 31 and the inlet of the first channel 12 can be connected, so that the cooling liquid passes through the first channel 13 and the second channel 31 in sequence.

[0064] The first channel 12 and the second channel 31 are connected in parallel, that is, the inlet of the first channel 12 and the inlet of the second channel 31 are connected, and the outlet of the first channel 12 and the outlet of the second channel 31 are connected. For example, the inlet of the first channel 12 and the inlet of the second channel 31 can be connected to the inlet pipe, and the outlet of the first channel 12 and the outlet of the second channel 31 can be connected to the outlet pipe, so that the cooling liquid is divided into two parts and simultaneously enters the first channel 12 and the second channel 31, and then simultaneously flows out of the first channel 12 and the second channel 31 and converges together.

[0065] When the first channel 12 and the second channel 31 are connected in series or in parallel, the cooling liquid can be simultaneously injected into the first channel 12 and the second channel 31 through one injection port, or the cooling liquid in the first channel 12 and the second channel 31 can be simultaneously discharged through one discharge port. The number of injection ports and discharge ports is small, and the injection process and discharge process of the cooling liquid are simple and easy to control. Furthermore, the flow directions of the first channel 12 and the second channel 31 can be consistent, so that the cooling liquid can enter the first channel 12 and the second channel 31 from the same side and flow out of the first channel 12 and the second channel 31 from the same side, making the distribution and collection of the cooling liquid more convenient.

[0066] In this embodiment, the inner wall of the cavity 11 is used for heat exchange with the first battery monomer 20, and the side of the first liquid cooling plate 30 facing the first battery monomer 20 is also used for heat exchange with the first battery monomer 20. In a specific embodiment, the area of the side of the first liquid cooling plate 30 facing the first battery monomer 20 can be smaller than the area of the shell of the first battery monomer 20 in contact with the first inner wall 13 of the cavity 11, so as to optimize the volume of the first liquid cooling plate 30, so that the first liquid cooling plate 30 is small enough, and the structure of the battery is more compact.

[0067] For example, the bottom surface of the battery shell of the first battery monomer 20 can be made to be in full contact with the first inner wall 13, so that the first battery monomer 20 located in the cavity 11 can be fully cooled. At the same time, the area of the face of the first liquid cooling plate 30 facing the first battery monomer 20 can be made to be smaller than the area of the bottom surface of the battery shell of the first battery monomer 20, so that the first battery monomer 20 is fully cooled at one end of the electrode terminal 21, and at the same time, the first liquid cooling plate 30 is small enough to make the structure of the battery more compact.

[0068] In this embodiment, the frame 10 and the first liquid cooling plate 30 can be metal frames 10 and metal plates, so that the structure of the frame 10 and the first liquid cooling plate 30 is stable, and the cooling effect of the first liquid cooling plate 30 is guaranteed. Alternatively, the frame 10 can be a plastic frame 10, so that the frame 10 is an insulator, avoiding short circuit caused by contact between the frame 10 and the conductive part. Similarly, the first liquid cooling plate 30 can be a plastic plate, so that the first liquid cooling plate 30 is an insulator, avoiding short circuit caused by contact between the first liquid cooling plate 30 and the conductive part.

[0069] In addition, in this embodiment, a second battery monomer 50 can also be installed in the cavity 11. The second battery monomer 50 is opposite to the first battery monomer 20, for example, in two adjacent battery monomers, any one of the battery monomers can be called the first battery monomer 20, and the other can be called the second monomer 50.

[0070] The second battery monomer 50 can be cooled by the second liquid cooling plate 60 different from the first liquid cooling plate 30 and the frame 10, or still by the first liquid cooling plate 30 and the frame 10, which will be illustrated below.

[0071] The first cooling method when the second battery monomer 50 is installed is shown in FIG. 4, which is a partial cross-sectional view of the first battery monomer and the second battery monomer adjacent position in the battery according to the embodiment of the application. The battery further comprises a second battery monomer 50 and a second liquid cooling plate 60. The second battery monomer 50 is installed in the cavity 11, and the second battery monomer 50 is connected with the inner wall of the cavity 11, and the second battery monomer 50 is arranged side by side with the first battery monomer 20. The second liquid cooling plate 60 is arranged side by side with the first liquid cooling plate 30, and the second liquid cooling plate 60 is located at the opening and opposite to the second battery monomer 50. The second liquid cooling plate 60 is provided with a third channel 61 for the flow of cooling liquid, and the first channel 12 and the third channel 61 are located on opposite sides of the second battery monomer 50.

[0072] The second liquid cooling plate 60 is similar in structure to the first liquid cooling plate 30, and the specific structural form is similar to the description of the first liquid cooling plate 30 above, which will not be repeated here. In specific embodiments, the second liquid cooling plate 60 can be completely the same as the first liquid cooling plate 30 in structure, or can be different in shape and size. In addition, the third channel 61 inside the second liquid cooling plate 60 can be in parallel or series with the second channel 31 inside the first liquid cooling plate 30, and the third channel 61 inside the second liquid cooling plate 60 can also be in parallel or series with the first channel 12, which is not specifically limited here.

[0073] In this way, the second battery monomer 50 is heat-exchanged by the frame 10 and the second liquid cooling plate 60 together, and the heat dissipation effect of the battery is better. Moreover, when multiple battery monomers are installed in the battery, this way can still ensure the heat dissipation effect of the battery and the compactness of the structure of the battery.

[0074] The second battery monomer 50 is installed in the cavity 11, and the second battery monomer 50 is connected with the inner wall of the cavity 11, and the second battery monomer 50 is arranged side by side with the first battery monomer 20. The first channel 12 and the second channel 31 are located on the opposite sides of the first battery monomer 20 and the second battery monomer 50 at the same time.

[0075] In this way, the first battery monomer 20 and the second battery monomer 50 are heat-exchanged by the frame 10 and the first liquid cooling plate 30, which has fewer parts, is easy to install, and can also ensure the heat dissipation effect of the battery and the compactness of the structure of the battery when multiple battery monomers are installed in the battery.

[0076] In summary, in the above-described battery, the first channel for the flow of cooling liquid is arranged in the frame, the second channel for the flow of cooling liquid is arranged in the first liquid cooling plate, and the first channel and the second channel are located on the opposite sides of the first battery monomer, so that the first battery monomer can be heat-exchanged by the cooling liquid in the first channel and the second channel at the same time, thereby improving the heat exchange efficiency of the battery and achieving better heat dissipation effect. At the same time, since the frame of the battery also has a heat exchange function, only the liquid cooling plate needs to be installed at the opening to make the battery fully heat dissipated, and the structure of the battery is compact and easy to assemble, which can ensure the heat dissipation effect of the battery and the compactness of the structure of the battery at the same time.

[0077] Those skilled in the art will appreciate that a combination of features of different embodiments implies that it is within the scope of the present application and forms a different embodiment, although some embodiments herein include certain features rather than others included in other embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0078] The above examples are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0079] Finally, it should be noted that the above examples are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery, characterized by, The battery comprises a frame, a first battery cell and a first liquid cooling plate; The frame encloses a cavity with an opening; the first battery cell is installed in the cavity and connected with the inner wall of the cavity; The first liquid cooling plate is located at the opening and opposite to the first battery cell; The frame is provided with a first channel for the circulation of cooling liquid, and the first liquid cooling plate is provided with a second channel for the circulation of cooling liquid, and the first channel and the second channel are located on opposite sides of the first battery cell.

2. The battery of claim 1, wherein, The first battery cell is connected with the first inner wall of the cavity, and the first inner wall is opposite to the opening.

3. The battery of claim 2, wherein, The area of the surface of the first liquid cooling plate facing the first battery cell is smaller than the area of the shell of the first battery cell in contact with the first inner wall.

4. The battery of claim 1, wherein, The cross-sectional area of the first channel is larger than that of the second channel.

5. The battery of claim 1, wherein, The first channel and the second channel are connected in series or in parallel.

6. The battery of claim 1, wherein, The frame is a plastic frame, and / or the first liquid cooling plate is a plastic plate.

7. The battery of claim 1, wherein, The circulation directions of the first channel and the second channel are consistent.

8. The battery of claim 1, wherein, The battery further comprises a busbar; the busbar is connected with the electrode terminal of the first battery cell; the busbar is located between the electrode terminal and the first liquid cooling plate, and the busbar is opposite to the first liquid cooling plate.

9. The battery of claim 1, wherein, The battery further comprises a second battery cell and a second liquid cooling plate; The second battery cell is installed in the cavity and connected with the inner wall of the cavity; the second battery cell is arranged side by side with the first battery cell; The second liquid cooling plate is arranged side by side with the first liquid cooling plate with a spacing, and the second liquid cooling plate is located at the opening and opposite to the second battery cell; The second liquid cooling plate is provided with a third channel for the circulation of cooling liquid, and the first channel and the third channel are located on opposite sides of the second battery cell.

10. The battery of claim 1, wherein, The battery further comprises a second battery cell; The second battery cell is installed in the cavity and connected with the inner wall of the cavity; The second battery cell is arranged side by side with the first battery cell; The first channel and the second channel are located on opposite sides of the first battery cell and the second battery cell at the same time.

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