Battery

Abstract

The embodiment of the utility model provides a battery, and relates to the technical field of energy storage. The battery comprises a frame, a first battery monomer and a first liquid cooling plate, a cavity with an opening is defined by the frame, and the first single battery is installed in the cavity and connected with the inner wall of the cavity. The first liquid cooling plate is positioned at the opening and is opposite to the first single battery; a first channel for cooling liquid to circulate is arranged in the frame, a second channel for cooling liquid to circulate is arranged in the first liquid cooling plate, and the first channel and the second channel are positioned on two opposite sides of the first battery monomer. According to the battery, heat exchange is carried out on the battery monomers through the frame and the liquid cooling plate, and the heat dissipation effect and the structure compactness of the battery can be ensured at the same time.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage technology, and specifically to a battery. Background Art

[0002] With the continuous development of electrical devices such as electric vehicles and high-performance computing equipment, battery safety and stability are becoming increasingly important. To prevent battery damage or performance degradation caused by overheating during discharge, heat exchange technology is generally used in batteries for cooling.

[0003] Liquid cooling technology is one of the most commonly used heat exchange technologies. Its specific technical solution is to install a liquid cooling plate adjacent to the battery cells in the battery pack. A channel for the flow of coolant is provided in the liquid cooling plate. When the coolant flows in the channel, it continuously exchanges heat with the battery cells, thereby dissipating heat from the battery and achieving the purpose of cooling.

[0004] However, current liquid cooling technology requires cooling plates to be installed within the battery. When the number of cooling plates is small, the overall heat dissipation efficiency of the battery is poor. When the number of cooling plates is large, installation becomes cumbersome, and the battery becomes bulky and heavy. Therefore, ensuring both effective heat dissipation and compactness remains a technical challenge. Utility Model Content

[0005] In view of the above problems, an embodiment of the present application provides a battery, in which a first channel for the flow of coolant is provided in the frame of the battery, and a second channel for the flow of coolant is provided in the first liquid cooling plate, so that heat is exchanged with the first battery cell through the frame and the first liquid cooling plate, which can ensure the heat dissipation effect of the battery and the compactness of the battery structure.

[0006] One aspect of an embodiment of the present application provides a battery comprising a frame, a first battery cell, and a first liquid cooling plate. The frame defines a cavity having an opening, the first battery cell being mounted in the cavity and connected to an 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 circulating coolant is provided within the frame, and a second channel for circulating coolant is provided within the first liquid cooling plate. The first channel and the second channel are located on opposite sides of the first battery cell.

[0007] In this type of battery, the frame and the first liquid cooling plate jointly exchange heat with the first battery cell, thereby ensuring both the heat dissipation effect and the compactness of the battery structure.

[0008] In an optional manner, the first battery cell is connected to a first inner wall of the cavity, and the first inner wall is opposite to the opening.

[0009] In this manner, the first battery cell can be installed more conveniently.

[0010] In an optional manner, the area of the first liquid cooling plate facing the first battery cell is smaller than the area where the shell of the first battery cell contacts the first inner wall.

[0011] In this manner, the first liquid cooling plate is small enough to make the battery structure more compact.

[0012] In an optional manner, the flow cross-sectional area of the first channel is larger than the flow cross-sectional area of the second channel.

[0013] The first channel has a large cross-sectional area, allowing the frame to fully exchange heat with the portion of the first battery cell located in the cavity. The second channel has a smaller cross-sectional area, allowing for sufficient heat exchange with the end of the first battery cell opposite the first liquid cooling plate while reducing the space occupied by the first liquid cooling plate, making the overall battery structure more compact.

[0014] In an optional manner, the first channel and the second channel are connected in series or in parallel.

[0015] When the first channel and the second channel are connected in series or in parallel, coolant can be injected into the first channel and the second channel at the same time through one injection port, and the coolant 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 process of filling and discharging the coolant is simple, and it is easy to control.

[0016] In an optional manner, the frame is a plastic frame, and / or the first liquid cooling plate is a plastic plate.

[0017] When the frame is a plastic frame, the frame is an insulator, thereby preventing the frame from contacting conductive components and causing a short circuit. When the first liquid cooling plate is a plastic plate, the first liquid cooling plate is an insulator, thereby preventing the first liquid cooling plate from contacting conductive components and causing a short circuit.

[0018] In an optional manner, the flow directions of the first channel and the second channel are consistent.

[0019] In this manner, the coolant can enter the first channel and the second channel from the same side and flow out from the first channel and the second channel from the same side, making the distribution and collection of the coolant more convenient.

[0020] In an optional embodiment, the battery further includes a tab, which is located between the electrode terminal and the first liquid cooling plate, and is opposite to the first liquid cooling plate.

[0021] In this manner, the first liquid cooling plate can simultaneously exchange heat with the first battery cell and the battery plate, thereby improving the heat dissipation effect of the battery.

[0022] In one optional embodiment, the battery further includes a second battery cell and a second liquid cooling plate. The second battery cell is mounted in the cavity and connected to 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 spaced apart from the first liquid cooling plate and is located at the open portion and opposite the second battery cell. The second liquid cooling plate is provided with a third channel for coolant circulation, with the first and third channels located on opposite sides of the second battery cell.

[0023] In this approach, the frame and the second liquid cooling plate work together to exchange heat with the second battery cell, improving the heat dissipation effect of the battery. Furthermore, this approach can simultaneously ensure the heat dissipation effect and compactness of the battery structure when multiple battery cells are installed in the battery.

[0024] In one optional embodiment, the battery further includes a second battery cell. The second battery cell is installed in the cavity and connected to 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.

[0025] In this method, the first battery cell and the second battery cell both exchange heat through the frame and the first liquid cooling plate, which requires fewer parts and is easy to install. Moreover, when multiple battery cells are installed in the battery, the heat dissipation effect of the battery and the compactness of the battery structure can be guaranteed at the same time.

[0026] In the battery provided in the embodiments of the present application, a first channel for coolant circulation is provided within the frame, and a second channel for coolant circulation is provided within the first liquid cooling plate. The first channel and the second channel are located on opposite sides of the first battery cell, allowing the first battery cell to simultaneously exchange heat through the coolant in the first and second channels, thereby improving the heat exchange efficiency of the battery and achieving better heat dissipation. Furthermore, because the frame of this type of battery also functions as a heat exchanger, sufficient heat dissipation from the battery can be achieved simply by adding a liquid cooling plate to the exposed portion. The battery has a compact structure, is easy to assemble, and can simultaneously ensure both the heat dissipation efficiency and the compactness of the battery structure.

[0027] The above description is only an overview 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, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic diagram of an explosion of a battery provided in an embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the overall structure of the battery provided in an embodiment of the present application when assembled.

[0031] Figure 3 This is a partial cross-sectional view of the position of the first battery cell in the battery involved in the embodiment of the present application.

[0032] Figure 4 This is a partial cross-sectional view of adjacent positions of a first battery cell and a second battery cell in a battery according to an embodiment of the present application.

[0033] Reference numerals:

[0034] 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. Bar; 50. Second battery cell; 60. Second liquid cooling plate; 61. Third channel. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0038] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0040] The directional words appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the battery of this application. For example, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting this application.

[0041] In addition, the expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operation and construction of the various components of the battery of this embodiment are not absolute but relative, and although these indications are appropriate when the various components of the battery are in the positions shown in the figures, when these positions are changed, these directions should be interpreted differently to correspond to the changes.

[0042] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0043] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In addition to referring to a physical connection, "connected" or "connected" in a circuit structure can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] The battery provided in this application can be used to drive electrical equipment, which may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, energy storage equipment, amusement equipment, elevators and lifting equipment, etc.

[0046] In this embodiment, the battery may 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 cells. The plurality of battery cells may be electrically connected in series, in parallel, or in a combination of series and parallel, and may be communicatively connected with the battery management system to form a battery pack. The battery management system controls and monitors the working status of each battery cell. In addition, the plurality of battery cells may also be first connected in series and / or in parallel, and formed into a battery module with the module management system, and then the plurality of battery modules may be electrically connected in series, in parallel, or in a combination of series and parallel, and may together with the battery management system form a battery pack.

[0047] The multiple battery cells in a battery pack or battery module can be mounted on a supporting structure such as a box, frame, or bracket. Electrical connections can be made between the individual battery cells and between the battery cells and the battery management system via busbars, such as tabs. The battery cells can be lithium-ion, sodium-ion, or magnesium-ion batteries, and their outer contours can be cylindrical, flat, rectangular, or other shapes, but are not limited to these.

[0048] The battery provided in this application is specifically as follows Figure 1 、 Figure 2 and Figure 3As shown, Figure 1 This is a schematic diagram of an explosion of a battery provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the overall structure of the battery provided in the embodiment of the present application when assembled. Figure 3 This is a partial cross-sectional view of the first battery cell in the battery according to an embodiment of the present application, wherein the battery includes a frame 10 , a first battery cell 20 , and a first liquid cooling plate 30 .

[0049] Frame 10 is a support structure that provides support and mounting locations for components such as battery cells and liquid cooling plates. Frame 10 encloses an open cavity 11, which is used to mount the battery cells. The opening connects cavity 11 to the outside world and provides operating space for mounting components such as battery cells.

[0050] The frame 10 can be made of high-strength materials, such as aluminum alloy or steel profiles. The overall shape of the frame 10 can be configured in various ways, such as a square or circular frame structure. The cavity 11 enclosed by the frame 10 can also be configured in a square, circular, or other shape as desired, without limitation.

[0051] A first channel 12 for coolant flow is provided within the frame 10, allowing the frame 10 to exchange heat with the first battery cell 20, thereby improving the heat dissipation efficiency of the battery. The wall thickness between the first channel 12 and the cavity 11 can be relatively thin, and the first channel 12 is positioned so that the first channel 12 and the first battery cell 20 are relatively close, placing the first channel 12 adjacent to the first battery cell 20. This allows the coolant flowing through the first channel 12 to directly exchange heat with the first battery cell 20.

[0052] The first battery cell 20 is a component for storing electrical energy. The first battery cell 20 specifically includes a battery housing and an electrode assembly, and the electrode assembly is housed in the battery housing. The electrode assembly is the smallest unit for performing electrochemical reactions in the battery, which enables the charging and discharging of the battery cell. It usually includes a positive electrode sheet, a negative electrode sheet, and a diaphragm separating the positive electrode sheet and the negative electrode sheet. An electrolyte is injected into the battery housing, and the electrolyte can infiltrate into the interior of the electrode assembly, providing an ion migration path for the electrochemical reaction of the electrode assembly and playing a conductive role. In addition, the battery housing is usually provided with exposed electrode terminals, which include a positive terminal and a negative terminal, and the positive terminal and the negative terminal are respectively connected to the positive electrode sheet and the negative electrode sheet, so as to perform charging and discharging through the electrode terminals.

[0053] The first battery cell 20 is installed in the cavity 11, and the first battery cell 20 is connected to the inner wall of the cavity 11. Specifically, the battery shell of the first battery cell 20 is connected to the inner wall of the cavity 11, so that the first battery cell 20 is fixed in the cavity 11, and one surface of the first battery cell 20 faces the outside of the opening, so that components such as the tabs can be arranged at the opening of the cavity 11. A specific embodiment is as follows Figure 3 As shown, the tab 40 can be connected to 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 faces the first liquid cooling plate 30. In this arrangement, the first liquid cooling plate 30 can simultaneously exchange heat for the first battery cell 20 and the tab 40, improving the heat dissipation of the battery.

[0054] The first battery cell 20 can be connected to the inner wall of the cavity 11 by welding, bonding, etc. The first battery cell 20 can be connected to the side wall of the cavity 11. The first battery cell 20 can also be connected to the side opposite to the opening, such as Figure 3 As shown, the first battery cell 20 is connected to 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 more convenient to install.

[0055] In a specific embodiment, the first end of the first battery cell 20 can be connected to the first inner wall 13 of the cavity 11, and the second end of the first battery cell 20 can be exposed to the outside. The first end and the second end are opposite ends of the first battery cell 20. For example, the first end of the first battery cell 20 is the bottom end of the battery casing of the first battery cell 20, and the second end of the first battery cell 20 is the end where the electrode terminal 21 of the first battery cell 20 is located.

[0056] In addition, the battery cell can be installed in the cavity 11 in the forward direction, that is, in the direction of gravity, the opening of the cavity 11 is facing upward, and the battery cell is installed in the cavity 11 with the bottom end of the battery shell facing downward and one end of the electrode terminal 21 facing upward. At this time, the first inner wall 13 opposite to the opening is the bottom of the cavity 11.

[0057] The battery cell can also be installed upside down in the cavity 11, that is, in the direction of gravity, the opening of the cavity 11 is facing downward, and the battery cell is installed in the cavity 11 with the bottom end of the battery shell facing upward and one end of the electrode terminal 21 facing downward. At this time, the first inner wall 13 opposite to the opening is the top of the cavity 11.

[0058] The first liquid cooling plate 30 is a plate-like structure having a certain thickness, and can be configured as a circular plate, a square plate, a long strip plate, etc. When the first liquid cooling plate 30 is connected to the frame 10, the specific connection method can be threaded connection, clamping connection, welding, etc., which is not limited here.

[0059] The first liquid cooling plate 30 is located at the open position and is opposite to the first battery cell 20 , and a second channel 31 for circulating cooling liquid is provided in the first liquid cooling plate 30 , so that the first liquid cooling plate 30 is adjacent to the first battery cell 20 , so that the cooling liquid flowing through the second channel 31 also exchanges heat with the first battery cell 20 .

[0060] like Figure 3 As shown, the first channel 12 and the second channel 31 are located on opposite sides of the first battery cell 20. That is, the first channel 12 within the frame 10 is disposed in the inner wall opposite the opening, i.e., the first inner wall 13, so that the first battery cell 20 is located between the first channel 12 and the second channel 31. At this point, the frame 10 and the first liquid cooling plate 30 form a double-layer cooling structure. When the coolant flows through the first channel 12 and the second channel 31 simultaneously, the first battery cell 20 can be cooled in multiple directions, thereby improving the heat dissipation effect of the battery. At the same time, because the frame 10 also has a heat exchange function, only the first liquid cooling plate 30 needs to be installed at the opening to fully dissipate the heat from the first battery cell 20. The battery structure is compact and easy to install, and can simultaneously ensure the heat dissipation effect and the compactness of the battery structure.

[0061] The first channel 12 and the second channel 31 may each include one or more channels. The flow cross-sections of the first channel 12 and the second channel 31 may be circular, elliptical, or the like. Furthermore, the flow cross-sectional area of the first channel 12 may be the same as or different from the flow cross-sectional area of the second channel 31. The flow cross-sectional area is defined as a cross-section perpendicular to the coolant flow direction.

[0062] In one specific embodiment, the cross-sectional area of the first channel 12 can be larger than the cross-sectional area of the second channel 31. The larger cross-sectional area of the first channel 12 enables the frame 10 to adequately cool the portion of the first battery cell 20 located in the cavity 11. The smaller cross-sectional area of the second channel 31 ensures effective heat dissipation at the end of the first battery cell 20 opposite the first liquid cooling plate 30 while minimizing the space occupied by the first liquid cooling plate 30, thereby making the overall battery structure more compact.

[0063] In this embodiment, the first channel 12 and the second channel 31 may not be connected to each other so that the coolant can be injected into them independently. Alternatively, the first channel 12 and the second channel 31 may be connected to each other, such as being connected in series or in parallel.

[0064] 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 liquid outlet of the first channel 12 can be connected to the liquid inlet of the second channel 31, or the liquid outlet of the second channel 31 can be connected to the liquid inlet of the first channel 12, so that the coolant passes through the first channel 13 and the second channel 31 in sequence.

[0065] The first channel 12 and the second channel 31 are connected in parallel, that is, the respective liquid inlets of the first channel 12 and the second channel 31 are connected, and the respective liquid outlets of the first channel 12 and the second channel 31 are connected. For example, the liquid inlet of the first channel 12 and the liquid inlet of the second channel 31 can be connected to the liquid inlet pipe, and the liquid outlet of the first channel 12 and the liquid outlet of the second channel 31 can be connected to the liquid outlet pipe. In this way, the coolant is divided into two parts and enters the first channel 12 and the second channel 31 at the same time, and then flows out of the first channel 12 and the second channel 31 at the same time and converges.

[0066] When the first channel 12 and the second channel 31 are connected in series or in parallel, coolant can be injected into the first channel 12 and the second channel 31 simultaneously through a single inlet, and the coolant can be discharged from the first channel 12 and the second channel 31 simultaneously through a single outlet. With a small number of inlets and outlets, the process of filling and draining the coolant is simple and easy to control. Furthermore, the flow directions of the first channel 12 and the second channel 31 can be made consistent, so that the coolant 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 coolant more convenient.

[0067] In this embodiment, the inner wall of the cavity 11 is used for heat exchange with the first battery cell 20, and the surface of the first liquid cooling plate 30 facing the first battery cell 20 is also used for heat exchange with the first battery cell 20. In a specific embodiment, the area of the surface of the first liquid cooling plate 30 facing the first battery cell 20 can be smaller than the area where the housing of the first battery cell 20 contacts the first inner wall 13 of the cavity 11, thereby optimizing the volume of the first liquid cooling plate 30, making it sufficiently small and the battery structure more compact.

[0068] For example, the bottom surface of the battery casing of the first battery cell 20 can be in full contact with the first inner wall 13, thereby fully dissipating heat from the first battery cell 20 within the cavity 11. At the same time, the area of the first liquid cooling plate 30 facing the first battery cell 20 can be smaller than the area of the bottom surface of the battery casing of the first battery cell 20. This allows sufficient heat dissipation from the electrode terminal 21 of the first battery cell 20 while keeping the first liquid cooling plate 30 sufficiently compact, resulting in a more compact battery structure.

[0069] In this embodiment, the frame 10 and the first liquid cooling plate 30 can be configured as a metal frame 10 and a metal plate to ensure structural stability and ensure the cooling effect of the first liquid cooling plate 30. Alternatively, the frame 10 can be a plastic frame 10, making it an insulator and preventing contact between the frame 10 and conductive components, which could cause a short circuit. Similarly, the first liquid cooling plate 30 can be a plastic plate, making it an insulator and preventing contact between the first liquid cooling plate 30 and conductive components, which could cause a short circuit.

[0070] In addition, in this embodiment, a second battery cell 50 can be installed in the cavity 11. The second battery cell 50 is opposite to the first battery cell 20. For example, of two adjacent battery cells, any one of them can be called the first battery cell 20, and the other can be called the second cell 50.

[0071] The second battery cell 50 can exchange heat through the second liquid cooling plate 60 different from the first liquid cooling plate 30 and the frame 10 , or can still exchange heat through the first liquid cooling plate 30 and the frame 10 , which is described below with examples.

[0072] The first heat dissipation method when the second battery cell 50 is installed is as follows Figure 4 As shown, Figure 4 This is a partial cross-sectional view of the adjacent positions of the first battery cell and the second battery cell in the battery involved in the embodiment of the present application. The battery also includes a second battery cell 50 and a second liquid cooling plate 60. The second battery cell 50 is installed in the cavity 11, and the second battery cell 50 is connected to the inner wall of the cavity 11. The second battery cell 50 is arranged side by side with the first battery cell 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 open end and opposite to the second battery cell 50. A third channel 61 for circulating coolant is provided in the second liquid cooling plate 60, and the first channel 12 and the third channel 61 are located on opposite sides of the second battery cell 50.

[0073] The second liquid cooling plate 60 is similar in structure to the first liquid cooling plate 30, and its specific structural form is analogous to the relevant description of the first liquid cooling plate 30, and no further details are given here. In a specific embodiment, the second liquid cooling plate 60 can have the same structure as the first liquid cooling plate 30, or it can differ in shape and size. Furthermore, the third channel 61 inside the second liquid cooling plate 60 can be connected in parallel or in 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 connected in parallel or in series with the first channel 12, without any specific limitation here.

[0074] In this method, the frame 10 and the second liquid cooling plate 60 jointly exchange heat with the second battery cell 50, thereby improving the heat dissipation effect of the battery. In addition, this method can ensure the heat dissipation effect and compactness of the battery structure when multiple battery cells are installed in the battery.

[0075] The second heat dissipation method when the second battery cell 50 is installed is that the battery further includes the second battery cell 50. The second battery cell 50 is installed in the cavity 11 and connected to the inner wall of the cavity 11. The second battery cell 50 is arranged side by side with the first battery cell 20. The first channel 12 and the second channel 31 are located on opposite sides of the first battery cell 20 and the second battery cell 50.

[0076] In this method, the first battery cell 20 and the second battery cell 50 are both heat-exchanged through the frame 10 and the first liquid cooling plate 30. This method requires fewer components and is easy to install. Furthermore, when multiple battery cells are installed in the battery, the heat dissipation effect of the battery and the compactness of the battery structure can be ensured at the same time.

[0077] In summary, in the battery described above, a first channel for coolant circulation is provided within the frame, and a second channel for coolant circulation is provided within the first liquid cooling plate. The first channel and the second channel are located on opposite sides of the first battery cell. This allows the first battery cell to simultaneously exchange heat with the coolant within the first and second channels, thereby improving the battery's heat exchange efficiency and achieving better heat dissipation. Furthermore, because the battery frame also functions as a heat exchanger, sufficient heat dissipation from the battery can be achieved simply by adding a liquid cooling plate to the exposed portion. The battery's compact structure facilitates assembly, ensuring both effective heat dissipation and structural compactness.

[0078] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0079] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: The battery comprises: a frame, a first battery cell and a first liquid cooling plate; The frame encloses a cavity with an open opening; the first battery cell is installed 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 is opposite to the first battery cell; A first channel for cooling liquid to circulate is provided in the frame, and a second channel for cooling liquid to circulate is provided in the first liquid cooling plate. The first channel and the second channel are located on opposite sides of the first battery cell.

2. The battery according to claim 1, characterized in that The first battery cell is connected to a first inner wall of the cavity, and the first inner wall is opposite to the opening.

3. The battery according to claim 2, characterized in that An area of a surface of the first liquid cooling plate facing the first battery cell is smaller than an area where the shell of the first battery cell contacts the first inner wall.

4. The battery according to claim 1, characterized in that A flow cross-sectional area of the first channel is greater than a flow cross-sectional area of the second channel.

5. The battery according to claim 1, characterized in that The first channel and the second channel are connected in series or in parallel.

6. The battery according to claim 1, characterized in that The frame is a plastic frame, and / or the first liquid cooling plate is a plastic plate.

7. The battery according to claim 1, characterized in that The flow directions of the first channel and the second channel are consistent.

8. The battery according to claim 1, characterized in that The battery further includes a tab; the tab is connected to the electrode terminal of the first battery cell; the tab is located between the electrode terminal and the first liquid cooling plate, and the tab is opposite to the first liquid cooling plate.

9. The battery according to claim 1, characterized in that The battery further includes a second battery cell and a second liquid cooling plate; The second battery cell is installed in the cavity, and the second battery cell is connected to the inner wall of the cavity; the second battery cell and the first battery cell are arranged side by side; The second liquid cooling plate is arranged side by side with the first liquid cooling plate and spaced apart from each other, and the second liquid cooling plate is located at the opening and opposite to the second battery cell; A third channel for circulating cooling liquid is provided in the second liquid cooling plate, and the first channel and the third channel are located on opposite sides of the second battery cell.

10. The battery according to claim 1, characterized in that The battery further includes a second battery cell; The second battery cell is installed in the cavity, and the second battery cell is connected to the inner wall of the cavity; the second battery cell and the first battery cell are arranged side by side; The first channel and the second channel are simultaneously located on opposite sides of the first battery cell and the second battery cell.

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