Battery, electric equipment and energy storage equipment

Abstract

The utility model relates to a battery, electric equipment and energy storage equipment. The battery comprises a battery box body, a heat exchange plate assembly and a battery monomer, the battery box body comprises a first part and a second part which are connected, the heat exchange plate assembly is connected with the second part, a containing cavity is formed between the heat exchange plate assembly and the first part, a heat exchange flow channel, a liquid inlet nozzle and a liquid outlet nozzle are formed in the heat exchange plate assembly, and the liquid inlet nozzle and the liquid outlet nozzle are communicated with the heat exchange flow channel. The liquid inlet nozzle is configured to be communicated with an external liquid supply pipeline through a first connecting plug, the liquid outlet nozzle is configured to be communicated with an external liquid return pipeline through a second connecting plug, and the battery monomers are arranged in the accommodating cavity and configured to be capable of exchanging heat with the heat exchange plate assembly; wherein the first part is provided with a first end face facing the second part, the second part is provided with a second end face facing the first part, and one of the first end face and the second end face is provided with at least one installation groove which is sunken away from the other one. According to the battery, the space utilization rate of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery, an electrical device and an energy storage device. Background Art

[0002] With the development of the industry, the energy density requirements of power batteries are getting higher and higher, and the structural requirements of batteries are becoming more and more compact. A heat exchange component is generally provided in the battery box to adjust the temperature of the battery. Among them, the heat exchange component can be connected to the external pipeline through a plug connector provided on the outside of the battery box, and a heat exchange medium is provided to the heat exchange component through the external pipeline. However, the existence of the plug connector occupies the external space of the battery box, thereby relatively reducing the space available for the battery box, thereby reducing the space utilization rate of the battery. Utility Model Content

[0003] In view of the defects of the prior art, the purpose of the present application is to provide a battery, an electrical device and an energy storage device, which can effectively solve the problem of reduced space available for battery use due to the presence of a plug connector.

[0004] The first aspect of the present application discloses a battery, the battery comprising:

[0005] A battery box, the battery box comprising a first part and a second part connected to each other;

[0006] A heat exchange plate assembly, the heat exchange plate assembly is connected to the second part and forms a receiving cavity with the first part, the heat exchange plate assembly forms a heat exchange flow channel and a liquid inlet nozzle and a liquid outlet nozzle connected to the heat exchange flow channel, the liquid inlet nozzle is configured to be connected to an external liquid supply pipeline through a first plug connector, and the liquid outlet nozzle is configured to be connected to an external liquid return pipeline through a second plug connector;

[0007] A battery cell, the battery cell is disposed in the accommodating cavity, and the battery cell is configured to be able to exchange heat with the heat exchange plate assembly;

[0008] The first part is provided with a first end face facing the second part, the second part is provided with a second end face facing the first part, one of the first end face and the second end face is formed with at least one mounting groove recessed away from the other, and the mounting groove is configured to accommodate at least a first plug connector, and / or the mounting groove is configured to accommodate at least a second plug connector.

[0009] According to the battery of the present application, by providing a mounting groove on one of the first end face and the second end face, a first plug connector for connecting the liquid inlet nozzle and the external liquid supply pipeline can be placed in the mounting groove, thereby reducing the space occupied by the first plug connector outside the battery case, and then the occupiable space of the battery case can be correspondingly increased, thereby improving the space utilization rate of the battery; and / or, a second plug connector for connecting the liquid outlet nozzle and the external liquid return pipeline can be placed in the mounting groove, thereby reducing the space occupied by the second plug connector outside the battery case, and then the occupiable space of the battery case can be correspondingly increased, thereby improving the space utilization rate of the battery.

[0010] In some embodiments of the present application, a mounting groove is formed on the second end surface, and the mounting groove is configured to accommodate the first plug connector and the liquid inlet nozzle, and / or the mounting groove is configured to accommodate the second plug connector and the liquid outlet nozzle.

[0011] By forming a mounting groove on the second end surface, the liquid inlet nozzle and / or the liquid outlet nozzle can be placed in the mounting groove when the heat exchange plate assembly is placed in the second mounting cavity, thereby facilitating the positioning and installation of the liquid inlet nozzle and / or the liquid outlet nozzle.

[0012] In some embodiments of the present application, a first notch is formed on the first end surface and is arranged corresponding to the position of the installation groove.

[0013] After the battery box and the heat exchange plate assembly are assembled into a battery, the liquid inlet nozzle and / or the liquid outlet nozzle are placed in the mounting groove, and the position of the liquid inlet nozzle and / or the liquid outlet nozzle can be easily adjusted through the first notch, thereby facilitating the connection of the liquid inlet nozzle and / or the liquid outlet nozzle with the external pipeline.

[0014] In some embodiments of the present application, there are two mounting grooves, one of which is configured to accommodate the liquid inlet nozzle and the first plug connector, and the other of which is configured to accommodate the liquid outlet nozzle and the second plug connector.

[0015] By setting two mounting grooves, the liquid inlet nozzle and the first plug connector can be placed in one of the mounting grooves, and the liquid outlet nozzle and the second plug connector can be placed in the other mounting groove, thereby reducing the space occupied by the first plug connector and the second plug connector outside the battery case at the same time, and then correspondingly increasing the occupied space of the battery case, thereby improving the space utilization rate of the battery case.

[0016] In some embodiments of the present application, the two mounting grooves are provided on the same side of the second portion along its length direction, or the two mounting grooves are provided on the same side of the second portion along its width direction.

[0017] By arranging the two mounting grooves on the same side of the second part along its own length or its own width direction, the liquid inlet nozzle and the liquid outlet nozzle can be arranged on the same side of the second part along its own length or its own width direction, so that the external liquid supply pipeline and the external liquid return pipeline are arranged on the same side of the second part along its own length or its own width direction, thereby facilitating the installation and maintenance of the external liquid supply pipeline and the external liquid return pipeline. At the same time, the external liquid supply pipeline and the external liquid return pipeline located on the same side can reduce the occupied space of the external liquid supply pipeline and the external liquid return pipeline compared to the external liquid supply pipeline and the external liquid return pipeline located on the opposite sides, thereby correspondingly increasing the occupied space of the battery case and improving the space utilization rate of the battery case.

[0018] In some embodiments of the present application, the heat exchange plate assembly also includes a heat exchange plate, a heat exchange tube and a collecting pipe. The heat exchange plate is formed with a fixed groove for accommodating a battery cell. The battery cell is arranged in the fixed groove and is closely connected to the heat exchange plate. The heat exchange tube and the collecting pipe are arranged on the surface of the heat exchange plate away from the battery cell. A heat exchange channel is formed inside the heat exchange tube, and the liquid inlet and outlet nozzles are respectively connected to the heat exchange channel through the collecting pipe.

[0019] The heat exchange medium is input into the heat exchange channel through the liquid inlet nozzle, and the heat exchange medium in the heat exchange channel is discharged through the liquid outlet nozzle. The heat exchange medium exchanges heat with the heat exchange tube during the flow in the heat exchange channel, thereby adjusting the temperature of the heat exchange tube, and then adjusting the temperature of the heat exchange plate. By setting a fixing groove on the heat exchange plate, placing the battery cell in the fixing groove and fitting it to the heat exchange plate, the positioning and installation of the battery cell can be completed, and at the same time, the fitting area between the battery cell and the heat exchange plate is increased, thereby improving the heat exchange effect of the heat exchange plate on the battery cell. In some embodiments of the present application, the heat exchange plate is formed with a second notch corresponding to the position of the installation groove.

[0020] After the battery box and the heat exchange plate assembly are assembled into a battery, the liquid inlet nozzle and / or the liquid outlet nozzle are placed in the mounting groove, and the position of the liquid inlet nozzle and / or the liquid outlet nozzle can be easily adjusted through the second notch, thereby facilitating the connection of the liquid inlet nozzle and / or the liquid outlet nozzle with the external pipeline.

[0021] In some embodiments of the present application, the second part includes a plurality of support beams connected end to end, and the same side surfaces of the plurality of support beams jointly form a second end surface, wherein a portion of the surface of at least one support beam is recessed to form a mounting groove.

[0022] By recessing part of the surface of the support beam to form a mounting groove, the support beam remains a continuous supporting structure. Compared with disconnecting the support beam and using it to pass through the liquid inlet and / or outlet nozzle, the supporting strength of the support beam can be effectively improved, thereby improving the supporting strength and anti-deformation ability of the battery box.

[0023] In some embodiments of the present application, the second part further includes a support member, which is connected to at least one support beam among the plurality of support beams and is used to support the heat exchange tube.

[0024] By providing a support member and supporting the heat exchange tube through the support member, the heat exchange plate assembly is supported, and then the position of the heat exchange plate assembly in the battery box is positioned.

[0025] In some embodiments of the present application, the liquid inlet nozzle includes a first connecting section, a first transition section, and a second connecting section that are sequentially connected, wherein the first transition section is arranged at an angle to the first connecting section and the second connecting section, respectively, and the second connecting section is configured to be connected to the first plug connector.

[0026] By setting the first transition section and setting the first transition section at an angle to the first connecting section and the second connecting section respectively, it is possible to easily adjust the position of the second connecting section relative to the first connecting section, thereby facilitating the placement of the second connecting section in the installation groove and connecting it to the first plug connector.

[0027] In some embodiments of the present application, the second connecting section is provided on a side of the first connecting section facing the battery cell.

[0028] By arranging the second connecting section on the side of the first connecting section facing the battery cell, the second connecting section can be arranged close to the first end face and the second end face, thereby reducing the recessed depth of the mounting groove on the end face, thereby improving the supporting strength and anti-deformation ability of the battery box.

[0029] In some embodiments of the present application, the liquid outlet includes a third connecting section, a second transition section and a fourth connecting section which are connected in sequence, wherein the second transition section is arranged at an angle to the third connecting section and the fourth connecting section, respectively, and the fourth connecting section is configured to be connected to the second plug connector.

[0030] By setting the second transition section and setting the second transition section at an angle to the third connection section and the fourth connection section respectively, it is possible to easily adjust the position of the fourth connection section relative to the third connection section, thereby facilitating the placement of the fourth connection section in the installation groove and connecting it to the second plug connector.

[0031] In some embodiments of the present application, the fourth connecting section is provided on a side of the third connecting section facing the battery cell.

[0032] By arranging the fourth connecting section on the side of the third connecting section facing the battery cell, the fourth connecting section can be arranged close to the first end face and the second end face, thereby reducing the recessed depth of the mounting groove on the end face, thereby improving the supporting strength and anti-deformation ability of the battery box.

[0033] A second aspect of the present application provides an electrical device, the electrical device comprising any one of the above batteries, the battery being used to supply power to the electrical device.

[0034] The third aspect of the present application proposes an energy storage device, which includes any one of the batteries described above. The energy storage device also includes a device box, in which the battery is disposed and used to store electrical energy for the energy storage device.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it 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 present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0037] Figure 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0038] Figure 2 is a schematic structural diagram of a battery module provided in one embodiment of the present application;

[0039] Figure 3 is a schematic diagram of the exploded structure of a battery cell provided in one embodiment of the present application;

[0040] Figure 4 is a schematic diagram of the structure of a battery provided in one embodiment of the present application;

[0041] Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the battery;

[0042] Figure 6 yes Figure 4 Schematic diagram of the enlarged structure of the A part;

[0043] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure of part B in FIG.

[0044] Figure 8 yes Figure 5 A schematic diagram of the structure of the second part;

[0045] Fig. 9 yes Figure 8 Schematic diagram of the enlarged structure of the C part;

[0046] Fig.10 yes Figure 5 Schematic diagram of the enlarged structure of the D part;

[0047] Fig.11 yes Figure 5 A schematic diagram of the structure of the heat exchange plate assembly;

[0048] Fig.12 yes Figure 5 A schematic diagram of the connection structure of the second part and the heat exchange plate assembly after the heat exchange plate is removed;

[0049] Fig.13 yes Fig.11 Schematic diagram of EE cross-section structure in;

[0050] Fig.14 yes Fig.13 Schematic diagram of the enlarged structure of the F part;

[0051] Fig.15 yes Fig.11 Schematic diagram of the GG cross-section structure;

[0052] Fig.16 yes Fig.15 Schematic diagram of the enlarged structure of the H part;

[0053] Fig.17 It is a schematic diagram of the structure of an energy storage container provided in one embodiment of the present application.

[0054] The reference numerals in the specific implementation manner are as follows:

[0055] 1. Vehicles;

[0056] 10. Battery; 11. Controller; 12. Motor;

[0057] 20. Battery module; 21. Battery cell; 211. End cap; 212. Housing; 213. Electrode assembly; 214. Electrode terminal;

[0058] 30. Battery box; 31. First part; 311. First end surface; 312. First notch; 32. Second part; 321. First support beam; 322. Second support beam; 323. Third support beam; 324. Fourth support beam; 325. Support member; 326. Second end surface; 327. Second mounting cavity; 328. Mounting groove;

[0059] 40. heat exchange plate assembly; 41. heat exchange tube; 42. header; 43. liquid inlet nozzle; 431. first connecting section; 432. first transition section; 433. second connecting section; 44. liquid outlet nozzle; 441. third connecting section; 442. second transition section; 443. fourth connecting section; 45. heat exchange plate; 451. fixing groove; 452. second notch;

[0060] 51, first plug connector; 511, first fixed end; 512, second fixed end; 52, second plug connector;

[0061] 2. Energy storage container; 201. Equipment box. DETAILED DESCRIPTION

[0062] The following detailed description of the implementation of the technical solution of the present application is provided in conjunction with the accompanying drawings. The following implementation is only used to more clearly illustrate the technical solution of the present application, and is therefore only used as an example, and cannot be used to limit the scope of protection of the present application.

[0063] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0064] In the description of the embodiments of the present application, the technical 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0065] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0066] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.

[0069] With the development of the industry, the energy density requirements of power batteries are getting higher and higher, and the structural requirements for battery boxes are getting more and more compact. A heat exchange component is generally provided in the battery box to adjust the temperature of the battery. The heat exchange component can be connected to an external pipeline through a plug connector provided outside the battery box, and a heat exchange medium is provided to the heat exchange component through an external pipeline. However, the presence of the plug connector occupies the external space of the battery box, thereby relatively reducing the available space of the battery box, thereby reducing the space utilization rate of the battery.

[0070] In order to solve the problem that the space available for battery box is reduced due to the presence of the plug connector, the present invention proposes a battery, an electric device having the battery, and an energy storage device having the battery. According to the battery of the present invention, the space occupied by the plug connector outside the battery box can be reduced, thereby correspondingly increasing the space available for battery box and improving the space utilization rate of the battery.

[0071] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including battery boxes and electrical equipment and energy storage equipment using batteries. However, for the sake of simplicity, the following embodiments are explained using electric vehicles as an example.

[0072] Figure 1 This is a schematic diagram of the structure of a vehicle 1 provided in some embodiments of the present application. Figure 1 As shown, the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is arranged inside the vehicle 1, and the battery 10 can be arranged at the bottom, head or tail of the vehicle 1. The battery 10 can be used to power the vehicle 1, for example, the battery 10 can be used as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0073] In some embodiments of the present application, the battery 10 can be used not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0074] Figure 2 FIG. 2 is a schematic diagram of the structure of a battery module 20 according to an embodiment of the present application. Figure 2 As shown, in order to meet different power requirements, the battery 10 may include a plurality of battery cells 21, and the battery cell 21 refers to the smallest unit that constitutes the battery module 20 or the battery pack. A plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals for use in various applications. The battery mentioned in the present application includes a battery module 20 or a battery pack. Among them, a plurality of battery cells 21 can be connected in series, in parallel, or in mixed connection, and mixed connection refers to a mixture of series and parallel connection. The battery 10 may also be referred to as a battery pack. In the embodiment of the present application, a plurality of battery cells 21 may directly constitute a battery pack, or may first constitute a battery module 20, and the battery module 20 may then constitute a battery pack.

[0075] The battery module 20 may include a plurality of battery cells 21. The plurality of battery cells 21 may be connected in series, in parallel, or in a mixed connection to form a battery module 20, and the plurality of battery modules 20 may be connected in series, in parallel, or in a mixed connection to form a battery 10. The battery cell 21 may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of the present application are not limited thereto. The battery cells 21 are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of the present application are not limited thereto. However, for the sake of simplicity, the following embodiments are all described using square lithium-ion battery cells 21 as an example.

[0076] Figure 3 The schematic diagram of the exploded structure of the battery cell 21 provided in some embodiments of the present application. The battery cell 21 refers to the smallest unit constituting the battery 10. Figure 3 The battery cell 21 includes an end cover 211 , a shell 212 and an electrode assembly 213 .

[0077] The end cap 211 refers to a component that covers the opening of the shell 212 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cap 211 can be adapted to the shape of the shell 212 to match the shell 212. Optionally, the end cap 211 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 211 is not easily deformed when squeezed and collided, so that the battery cell 21 can have a higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on the end cap 211. The electrode terminal 214 can be used to electrically connect to the electrode assembly 213 for outputting or inputting electrical energy of the battery cell 21. In some embodiments, the end cap 211 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, an insulating member may be provided inside the end cap 211, and the insulating member may be used to isolate the electrical connection components in the housing 212 from the end cap 211 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0078] The shell 212 is a component used to cooperate with the end cap 211 to form the internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, the electrolyte (not shown in the figure) and other components. The shell 212 and the end cap 211 can be independent components, and an opening can be set on the shell 212, and the internal environment of the battery cell 21 is formed by covering the opening with the end cap 211 at the opening. Without limitation, the end cap 211 and the shell 212 can also be integrated. Specifically, the end cap 211 and the shell 212 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 212, the end cap 211 covers the shell 212. The shell 212 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 212 can be determined according to the specific shape and size of the electrode assembly 213. The material of the shell 212 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0079] The electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained in the housing 212. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 213, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear (not shown in the figure). The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ear connects the electrode terminal 214 to form a current loop.

[0080] Combination Figures 4 to 7 As shown, the first aspect of the present application discloses a battery 10, the battery 10 includes a battery case 30, a heat exchange plate assembly 40 and a battery cell 21, the battery case 30 includes a first part 31 and a second part 32 connected to each other, the heat exchange plate assembly 40 is connected to the second part 32, and a receiving cavity is formed between the heat exchange plate assembly 40 and the first part 31, the heat exchange plate assembly 40 is formed with a heat exchange flow channel and a liquid inlet nozzle 43 and a liquid outlet nozzle 44 connected to the heat exchange flow channel, the liquid inlet nozzle 43 is configured to be connected to an external liquid supply pipeline through a first plug connector 51, and the liquid outlet nozzle 44 is configured to be connected to an external liquid supply pipeline through a second plug connector 52. The external liquid return pipeline is connected, the battery cell 21 is arranged in the accommodating cavity, and the battery cell 21 is configured to be able to exchange heat with the heat exchange plate assembly 40; wherein, the first part 31 is provided with a first end face 311 facing the second part 32, and the second part 32 is provided with a second end face 326 facing the first part 31, and one of the first end face 311 and the second end face 326 is formed with at least one mounting groove 328 recessed away from the other, and the mounting groove 328 is configured to be used to accommodate at least the first plug connector 51, and / or, the mounting groove 328 is configured to be used to accommodate at least the second plug connector 52.

[0081] Specifically, the battery case 30 is used to accommodate the battery cell 21 or the battery module 20 to reduce the impact of liquid or other foreign matter on the charging or discharging of the battery cell 21. The battery case 30 can be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as a cuboid, cylinder or sphere. The material of the battery case 30 can be an alloy material such as an aluminum alloy, an iron alloy, or a polymer material such as polycarbonate, polyisocyanurate foam, or a composite material such as glass fiber plus epoxy resin. For the convenience of description, this application only takes the battery case 30 as an example of a roughly rectangular structure. Accordingly, one of the first part 31 and the second part 32 is a roughly rectangular structure, and the other of the first part 31 and the second part 32 is a roughly rectangular structure, or a roughly rectangular plate structure.

[0082] The battery case 30 has a length direction, a width direction and a height direction. The arrangement direction of the first part 31 and the second part 32 is the height direction of the battery case 30, the length direction, the width direction and the height direction are perpendicular to each other, and the length direction of the battery case 30 is greater than the width direction.

[0083] The first part 31 is provided with a first end face 311 facing the second part 32, and the second part 32 is provided with a second end face 326 facing the first part 31. When it is necessary to assemble into a battery case 30, the first end face 311 and the second end face 326 are arranged opposite to each other, and the first part 31 and the second part 32 are connected by a connector or other connection methods to form a battery case 30. Among them, the heat exchange plate assembly 40 is connected to the second part 32, and a receiving cavity for accommodating a battery cell 21 or a battery module 20 is formed between the heat exchange plate assembly 40 and the first part 31. At least one mounting groove 328 can be provided on the first end face 311 and is recessed away from the second end face 326, or at least one mounting groove 328 can be provided on the second end face 326 and is recessed away from the first end face 311, or at least one mounting groove 328 can be recessed on the first end face 311 and the second end face 326, respectively.

[0084] The heat exchange plate assembly 40 can be a roughly plate-shaped structure, with a heat exchange channel formed inside it, and the liquid inlet nozzle 43 and the liquid outlet nozzle 44 are respectively connected to the heat exchange channel, wherein the liquid inlet nozzle 43 is connected to the external liquid supply pipeline through the first plug connector 51, and is used to input heat exchange medium into the heat exchange channel, and the liquid outlet nozzle 44 is connected to the external liquid return pipeline through the second plug connector 52, and is used to discharge the heat exchange medium in the heat exchange channel, so that the heat exchange medium circulates in the heat exchange channel, and then the temperature of the heat exchange plate assembly 40 is adjusted by the heat exchange medium, and heat exchange is carried out with the battery cell 21 through the heat exchange plate assembly 40 to adjust the temperature of the battery cell 21.

[0085] The first plug connector 51 may have the same structure as the second plug connector 52. For the convenience of description, only the structure of the first plug connector 51 is used as an example for explanation. The first plug connector 51 includes a first fixed end 511 and a second fixed end 512 arranged at an angle. Optionally, the first fixed end 511 and the second fixed end 512 are arranged in a roughly L-shaped structure. Among them, the second fixed end 512 is arranged outside the battery case 30 and is connected to the external liquid supply pipeline. The first fixed end 511 may be arranged in the mounting groove 328 and connected to the liquid inlet nozzle 43. Among them. The liquid inlet nozzle 43 may be arranged in the accommodating cavity of the battery case 30, and the first fixed end 511 may pass through the mounting groove 328 and extend into the accommodating cavity to connect with the liquid inlet nozzle 43. Alternatively, the liquid inlet nozzle 43 is connected to the first fixed end 511 and is jointly arranged in the mounting groove 328.

[0086] The number of the mounting slots 328 may be one, two, or more. When the number of the mounting slots 328 is two or more, the first plug connector 51 may be placed in one of the mounting slots 328, and the second plug connector 52 may be placed in another of the mounting slots 328. When the number of the mounting slots 328 is one and there is enough space to accommodate the first plug connector 51 and the second plug connector 52 at the same time, the first plug connector 51 and the second plug connector 52 may be placed together in the mounting slot 328 and connected to the liquid inlet nozzle 43 and the liquid outlet nozzle 44, respectively. When the number of the mounting slots 328 is one and there is only space to accommodate one of the first plug connector 51 and the second plug connector 52, one of the first plug connector 51 and the second plug connector 52 is placed in the mounting slot 328 and connected to the corresponding liquid inlet nozzle 43 or liquid outlet nozzle 44. At the same time, the side wall of the first part 31 or the second part 32 can be disconnected, and the other of the first plug connector 51 and the second plug connector 52 is inserted into the disconnected part of the side wall and connected to the corresponding liquid inlet nozzle 43 or liquid outlet nozzle 44. The disconnected setting means that the side wall of the first part 31 or the second part 32 is a discontinuous structure, while the side wall with the mounting groove 328 is still a continuous structure. For the convenience of description, this application only takes the example that two mounting grooves 328 are provided on the second end face 326, and the liquid inlet nozzle 43 and the first plug connector 51 are connected and placed together in one of the mounting grooves 328, and the liquid outlet nozzle 44 and the second plug connector 52 are connected and placed together in the other mounting groove 328.

[0087] According to the battery 10 of the present application, by setting two installation grooves 328 on the second end face 326, the first plug connector 51 for connecting the liquid inlet nozzle 43 and the external liquid supply pipeline can be placed in one of the installation grooves 328, thereby reducing the space occupied by the first plug connector 51 outside the battery case 30, and then correspondingly increasing the occupied space of the battery case 30, thereby improving the space utilization rate of the battery 10; the second plug connector 52 for connecting the liquid outlet nozzle 44 and the external liquid return pipeline can be placed in the other installation groove 328, thereby reducing the space occupied by the second plug connector 52 outside the battery case 30, and then correspondingly increasing the occupied space of the battery case 30, thereby improving the space utilization rate of the battery 10.

[0088] Combination Figures 4 to 9 As shown, in some embodiments of the present application, the second end surface 326 is formed with a mounting groove 328, and the mounting groove 328 is configured to accommodate the first plug connector 51 and the liquid inlet nozzle 43, and / or, the mounting groove 328 is configured to accommodate the second plug connector 52 and the liquid outlet nozzle 44.

[0089] Since the heat exchange plate assembly 40 is placed in the second installation cavity 327, a mounting groove 328 is formed on the second end surface 326. When the heat exchange plate assembly 40 is placed in the second installation cavity 327, the liquid inlet nozzle 43 and the liquid outlet nozzle 44 can be respectively placed in the mounting groove 328, thereby facilitating the positioning and installation of the liquid inlet nozzle 43 and the liquid outlet nozzle 44.

[0090] Combination Figures 4 to 10 As shown, in some embodiments of the present application, the first end surface 311 is formed with a first notch 312 arranged corresponding to the position of the installation groove 328 .

[0091] Specifically, the number of the first notches 312 can be two, and the two first notches 312 are respectively arranged opposite to the two mounting grooves 328 along the height direction of the battery case 30. When the battery case 30 and the heat exchange plate assembly 40 are assembled into the battery 10, the liquid inlet nozzle 43 and the liquid outlet nozzle 44 are respectively placed in different mounting grooves 328, and the positions of the liquid inlet nozzle 43 and the liquid outlet nozzle 44 can be adjusted through the first notches 312, so as to facilitate the connection of the liquid inlet nozzle 43 and the liquid outlet nozzle 44 with the external pipeline.

[0092] Combination Figures 4 to 8 As shown, in some embodiments of the present application, the number of mounting grooves 328 is two, one of the two mounting grooves 328 is configured to accommodate the liquid inlet nozzle 43 and the first plug connector 51, and the other of the two mounting grooves 328 is configured to accommodate the liquid outlet nozzle 44 and the second plug connector 52.

[0093] By setting two mounting grooves 328, the liquid inlet nozzle 43 and the first plug connector 51 can be placed in one of the mounting grooves 328, and the liquid outlet nozzle 44 and the second plug connector 52 can be placed in the other mounting groove 328, thereby reducing the space occupied by the first plug connector 51 and the second plug connector 52 outside the battery case 30 at the same time, thereby correspondingly increasing the occupied space of the battery case 30 and improving the space utilization of the battery 10.

[0094] Combination Figures 4 to 8 As shown, in some embodiments of the present application, the two mounting grooves 328 are jointly arranged on the same side of the second portion 32 along its own length direction, or the two mounting grooves 328 are jointly arranged on the same side of the second portion 32 along its own width direction.

[0095] Specifically, in some embodiments of the present application, the two mounting grooves 328 may be provided on the same side of the second portion 32 along its length direction. Figure 4As shown, the external liquid supply pipeline and the external liquid return pipeline can be arranged on the same side of the battery case 30, so that the external liquid supply pipeline and the external liquid return pipeline can be installed and maintained on the same side of the length direction of the battery case 30. At the same time, compared with the external liquid supply pipeline and the external liquid return pipeline located on both sides of the length direction of the battery case 30, the external liquid supply pipeline and the external liquid return pipeline located on the same side can reduce the space occupied by the external liquid supply pipeline and the external liquid return pipeline in the length direction of the battery case 30, thereby correspondingly increasing the available space of the battery case 30 and improving the space utilization rate of the battery 10.

[0096] In some embodiments of the present application, the two installation grooves 328 may also be provided on the same side of the second portion 32 along its width direction, so as to facilitate the installation and maintenance of the external liquid supply pipeline and the external liquid return pipeline on the same side of the width direction of the battery case 30. At the same time, the space occupied by the external liquid supply pipeline and the external liquid return pipeline in the width direction of the battery case 30 is reduced, thereby correspondingly increasing the available space of the battery case 30 and improving the space utilization rate of the battery 10.

[0097] Combination Figure 5 , Fig.11 and Fig.12 As shown, in some embodiments of the present application, the heat exchange plate assembly 40 also includes a heat exchange plate 45, a heat exchange tube 41 and a collecting pipe 42. The heat exchange plate 45 is formed with a fixing groove 451 for accommodating the battery cell 21. The battery cell 21 is arranged in the fixing groove 451 and is closely connected to the heat exchange plate 45. The heat exchange tube 41 and the collecting pipe 42 are arranged on the surface of the heat exchange plate 45 away from the battery cell 21. A heat exchange flow channel is formed inside the heat exchange tube 41, and the liquid inlet nozzle 43 and the liquid outlet nozzle 44 are respectively connected to the heat exchange flow channel through the collecting pipe 42.

[0098] Specifically, the heat exchange tube 41 may be a U-shaped heat exchange tube, and a plurality of heat exchange tubes 41 are arranged at intervals along the width direction of the battery case 30, and both ends of any heat exchange tube 41 are respectively connected to the interior of the header 42. The interior of the header 42 is provided with a plurality of communication channels arranged at intervals, and two adjacent heat exchange tubes 41 are connected through the communication channels inside the header 42, so that the plurality of heat exchange tubes 41 are sequentially connected through the header 42. The two sides of the header 42 along the width direction of the battery case 30 are respectively connected to the liquid inlet nozzle 43 and the liquid outlet nozzle 44, and the plurality of heat exchange tubes 41 are respectively arranged between the liquid inlet nozzle 43 and the liquid outlet nozzle 44 along the width direction of the battery case 30, so that the heat exchange medium flowing into the heat exchange flow channel through the liquid inlet nozzle 43 can flow through the plurality of heat exchange tubes 41 in sequence, and finally flow out of the heat exchange flow channel through the liquid outlet nozzle 44.

[0099] The heat exchange medium is input into the heat exchange channel through the liquid inlet nozzle 43, and the heat exchange medium in the heat exchange channel is discharged through the liquid outlet nozzle 44. The heat exchange medium exchanges heat with the heat exchange tube 41 during the flow in the heat exchange channel, thereby adjusting the temperature of the heat exchange tube 41, and then adjusting the temperature of the heat exchange plate 45. By providing a fixing groove 451 on the heat exchange plate 45, the battery cell 21 is arranged in the fixing groove 451 and is connected to the heat exchange plate 45, the positioning and installation of the battery cell 21 can be completed, and at the same time, the contact area between the battery cell 21 and the heat exchange plate 45 is increased, thereby improving the heat exchange effect of the heat exchange plate 45 on the battery cell 21.

[0100] Combination Figure 4 , Figure 6 and Fig.11 As shown, in some embodiments of the present application, the heat exchange plate 45 is formed with a second notch 452 arranged corresponding to the position of the mounting groove 328 .

[0101] Specifically, the number of the second notches 452 can be two, and the two second notches 452 are respectively arranged opposite to the two mounting grooves 328 along the height direction of the battery case 30. After the battery case 30 and the heat exchange plate assembly 40 are assembled into the battery 10, the liquid inlet nozzle 43 and / or the liquid outlet nozzle 44 are placed in the mounting groove 328, and the position of the liquid inlet nozzle 43 and / or the liquid outlet nozzle 44 can be adjusted through the second notches 452, so as to facilitate the connection of the liquid inlet nozzle 43 and / or the liquid outlet nozzle 44 with the external pipeline.

[0102] Combination Figures 4 to 8 As shown, in some embodiments of the present application, the second part 32 includes a plurality of support beams connected end to end, and the same side surfaces of the plurality of support beams jointly form a second end surface 326, wherein a portion of the surface of at least one support beam is recessed to form a mounting groove 328.

[0103] Specifically, the second part 32 includes a first support beam 321, a second support beam 322, a third support beam 323 and a fourth support beam 324 connected end to end, and the first support beam 321, the second support beam 322, the third support beam 323 and the fourth support beam 324 are enclosed into a substantially rectangular frame structure. The first support beam 321 and the third support beam 323 are arranged oppositely along the length direction of the battery box 30, and the second support beam 322 and the fourth support beam 324 are arranged oppositely along the width direction of the battery box 30. The first support beam 321, the second support beam 322, the third support beam 323 and the fourth support beam 324 are arranged oppositely along the width direction of the battery box 30. The same side surface of the first support beam 321, the second support beam 322, the third support beam 323 and the fourth support beam 324 facing the first part 31 is in substantially the same plane, and together form a second end face 326. The first support beam 321 is provided with two mounting grooves 328 spaced apart along the width direction of the battery box 30.

[0104] By recessing part of the surface of the first support beam 321 to form a mounting groove 328, the first support beam 321 remains a continuous supporting structure. Compared with disconnecting the first support beam 321 and using it to pass through the liquid inlet nozzle 43 and the liquid outlet nozzle 44, the supporting strength of the first support beam 321 can be effectively improved, thereby improving the supporting strength and anti-deformation ability of the battery box 30.

[0105] Combination Figure 4 , Figure 8 and Fig.12 As shown, in some embodiments of the present application, the second portion 32 further includes a support member 325 , which is connected to at least one of the plurality of support beams and is used to support the heat exchange tube 41 .

[0106] Specifically, the support member 325 may be a support plate, and the first support beam 321, the second support beam 322, the third support beam 323 and the fourth support beam 324 are respectively connected to the support plate on the same side surface away from the first part 31, and the first support beam 321, the second support beam 322, the third support beam 323 and the fourth support beam 324 are respectively protruding from the plate surface of the support plate, and are enclosed with the support plate to form a chamber for accommodating the heat exchange plate assembly 40. A plurality of heat exchange tubes 41 may be connected to the support plate by welding, such as brazing, so that the heat exchange plate assembly 40 is supported by the support plate. In some embodiments of the present application, a plurality of cross beams may be provided instead of the support plate, and the plurality of cross beams may be arranged at intervals along the length direction or the width direction of the battery 10, and connected to two support beams arranged oppositely, so that the heat exchange plate assembly 40 is supported and fixed by the cross beams.

[0107] By providing the support member 325 and supporting the heat exchange tube 41 through the support member 325 , the heat exchange plate assembly 40 is supported, and further the position of the heat exchange plate assembly 40 in the battery box 30 is positioned.

[0108] Combination Figure 4 , Figure 6 , Figure 7 , Fig.12 , Fig.13 and Fig.14 As shown, in some embodiments of the present application, the liquid inlet nozzle 43 includes a first connecting section 431, a first transition section 432 and a second connecting section 433 which are connected in sequence, wherein the first transition section 432 is arranged at an angle to the first connecting section 431 and the second connecting section 433, respectively, and the second connecting section 433 is configured to be connected to the first plug connector 51.

[0109] In some embodiments of the present application, the first connection section 431 is connected to the manifold 42, and the second connection section 433 is connected to the first plug connector 51, so that the heat exchange medium is input into the heat exchange tube 41 through the external liquid supply pipeline connected to the first plug connector 51. Optionally, the second connection section 433 is connected to the first fixed end 511 of the first plug connector 51, and is placed in the mounting groove 328 together with the first fixed end 511, so as to reduce the space occupied by the first fixed end 511 outside the battery box 30, that is, to reduce the space occupied by the first plug connector 51 outside the battery box 30.

[0110] By setting the first transition section 432 and setting the first transition section 432 at an angle to the first connecting section 431 and the second connecting section 433 respectively, it is possible to easily adjust the position of the second connecting section 433 relative to the first connecting section 431, thereby facilitating the placement of the second connecting section 433 in the mounting groove 328 and connecting it to the first plug connector 51.

[0111] Combination Figure 4 , Figure 6 , Fig.12 , Fig.13 and Fig.14 As shown, in some embodiments of the present application, the second connecting section 433 is disposed on a side of the first connecting section 431 facing the battery cell 21 .

[0112] Specifically, since the battery cell 21 is arranged on the upper side of the heat exchange plate assembly 40 along the height direction of the battery case 30, the second connecting section 433 is arranged on the side of the first connecting section 431 facing the battery cell 21, that is, the second connecting section 433 is arranged on the upper side of the first connecting section 431 along the height direction of the battery case 30, so that the second connecting section 433 is arranged close to the first end face 311 and the second end face 326, thereby reducing the recess depth of the installation groove 328 on the second end face 326, thereby improving the supporting strength and anti-deformation ability of the battery case 30.

[0113] Combination Figure 4 , Figure 6 , Fig.12 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, the liquid outlet 44 includes a third connecting section 441, a second transition section 442 and a fourth connecting section 443 which are sequentially connected, wherein the second transition section 442 is respectively arranged at an angle to the third connecting section 441 and the fourth connecting section 443, and the fourth connecting section 443 is configured to be connected to the second plug connector 52.

[0114] In some embodiments of the present application, the third connection section 441 is connected to the manifold 42, and the fourth connection section 443 is connected to the second plug connector 52, so that the heat exchange medium in the heat exchange tube 41 is discharged through the external liquid return pipeline connected to the second plug connector 52. Optionally, the fourth connection section 443 is connected to the second plug connector 52, and is placed together with the second plug connector 52 in the installation groove 328, so as to reduce the space occupied by the second plug connector 52 outside the battery box 30.

[0115] By setting the second transition section 442 and setting the second transition section 442 at an angle to the third connection section 441 and the fourth connection section 443 respectively, it is possible to easily adjust the position of the fourth connection section 443 relative to the third connection section 441, thereby facilitating the placement of the fourth connection section 443 in the installation groove 328 and connecting it to the second plug connector 52.

[0116] Combination Figure 4 , Figure 6 , Fig.12 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, the fourth connecting segment 443 is disposed on a side of the third connecting segment 441 facing the battery cell 21 .

[0117] Specifically, since the battery cell 21 is arranged on the upper side of the heat exchange plate assembly 40 along the height direction of the battery case 30, the fourth connecting section 443 is arranged on the side of the third connecting section 441 facing the battery cell 21, that is, the fourth connecting section 443 is arranged on the upper side of the third connecting section 441 along the height direction of the battery case 30, so that the fourth connecting section 443 is arranged close to the first end face 311 and the second end face 326, thereby reducing the recess depth of the mounting groove 328 on the second end face 326, and further improving the supporting strength and anti-deformation ability of the battery case 30.

[0118] like Figure 1 As shown, the second aspect of the present application proposes an electrical device, which includes a battery 10 according to any one of the above embodiments, and the battery 10 is used to supply power to the electrical device.

[0119] In some embodiments of the present application, the electrical device may be a vehicle 1, which includes a battery 10 of any of the above embodiments, and the battery 10 is used to supply power to the vehicle 1 for starting, navigating, and driving the vehicle 1.

[0120] Since the vehicle 1 has the battery 10 of any of the above-mentioned embodiments, it can achieve the same technical effects as the battery 10 of any of the above-mentioned embodiments, and will not be described in detail here.

[0121] like Fig.17As shown, the third aspect of the present application proposes an energy storage device, which includes a battery 10 of any of the above-mentioned embodiments, and the energy storage device also includes a device box 201. The battery 10 is arranged in the device box 201 and is used to store electrical energy for the energy storage device.

[0122] In some embodiments of the present application, the energy storage device may be an energy storage container 2, which includes an equipment box 201 and a battery 10 disposed in the equipment box 201. The battery 10 is a battery 10 in any of the above embodiments, and the battery 10 is used to store electrical energy for the energy storage container 2 to meet the working power demand of the energy storage container 2.

[0123] Since the energy storage container 2 has the battery 10 of any of the above embodiments, it can achieve the same technical effect as the battery 10 of any of the above embodiments, and will not be described in detail here.

[0124] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it 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 present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0125] like Figure 1 As shown, the present application proposes a vehicle 1 , which includes a battery 10 , and the battery 10 is used to power the vehicle 1 .

[0126] Combination Figure 4 , Figure 5 and Fig.11As shown, the battery 10 includes a battery case 30, a heat exchange plate assembly 40 and a battery cell 21. The battery case 30 includes a first part 31 and a second part 32 connected to each other. The heat exchange plate assembly 40 is connected to the second part 32 and forms a receiving cavity with the first part 31. The heat exchange plate assembly 40 forms a heat exchange flow channel and a liquid inlet nozzle 43 and a liquid outlet nozzle 44 connected to the heat exchange flow channel. The liquid inlet nozzle 43 is configured to be connected to an external liquid supply pipeline through a first plug connector 51, and the liquid outlet nozzle 44 is configured to be connected to an external liquid return pipeline through a second plug connector 52. The battery cell 21 is arranged in the receiving cavity, and the battery cell 21 is configured to be able to exchange heat with the heat exchange plate assembly 40; wherein the first part 31 is provided with a first end face 311 facing the second part 32, and the second part 32 is provided with a second end face 326 facing the first part 31. The second end surface 326 is formed with two mounting grooves 328 which are recessed away from the first end surface 311, and the first end surface 311 is formed with two first notches 312 which are respectively arranged corresponding to the positions of the two mounting grooves 328. The two mounting grooves 328 are arranged on the same side of the second portion 32 along its length direction, and the two mounting grooves 328 are arranged at intervals along the width direction of the second portion 32. One of the mounting grooves 328 is configured to accommodate the liquid inlet nozzle 43 and the first plug connector 51, and the other mounting groove 328 is configured to accommodate the liquid outlet nozzle 44 and the second plug connector 52.

[0127] Combination Figure 5 , Figure 8 , Fig.11 and Fig.12 As shown, in some embodiments of the present application, the heat exchange plate assembly 40 further includes a heat exchange plate 45, a heat exchange tube 41 and a header 42. The heat exchange plate 45 is formed with a fixing groove 451 for accommodating the battery cell 21. The battery cell 21 is arranged in the fixing groove 451 and is closely connected to the heat exchange plate 45. The heat exchange tube 41 and the header 42 are arranged on the surface of the heat exchange plate 45 away from the battery cell 21. A heat exchange flow channel is formed inside the heat exchange tube 41. The liquid inlet nozzle 43 and the liquid outlet nozzle 44 are respectively connected to the heat exchange flow channel through the header 42. Among them, the heat exchange plate 45 is formed with two second notches 452 respectively arranged corresponding to the positions of the two mounting grooves 328.

[0128] Combination Figures 4 to 8 As shown, the second part 32 includes a plurality of support beams connected end to end in sequence, and the same side surfaces of the plurality of support beams jointly form a second end surface 326, wherein a portion of the surface of the support beams on one side of the second part 32 along its own length direction is recessed to form two mounting grooves 328. The second part 32 also includes a support member 325, which is a support plate and is respectively connected to the plurality of support beams for supporting the heat exchange tube 41.

[0129] Combination Figure 4 , Figure 12 to Figure 14As shown, the liquid inlet nozzle 43 includes a first connecting section 431, a first transition section 432 and a second connecting section 433 which are connected in sequence, wherein the first transition section 432 is arranged at an angle to the first connecting section 431 and the second connecting section 433 respectively, and the second connecting section 433 is arranged on the side of the first connecting section 431 facing the battery cell 21, and the second connecting section 433 is configured to be connected to the first plug connector 51.

[0130] Combination Figure 4 , Fig.12 , Fig.15 and Fig.16 As shown, the liquid outlet nozzle 44 has the same structure as the liquid inlet nozzle 43 and is symmetrically arranged along the width direction of the battery case 30. The liquid outlet nozzle 44 includes a third connecting section 441, a second transition section 442 and a fourth connecting section 443 which are sequentially connected, wherein the second transition section 442 is arranged at an angle with the third connecting section 441 and the fourth connecting section 443, respectively, the fourth connecting section 443 is arranged on the side of the third connecting section 441 facing the battery cell 21, and the fourth connecting section 443 is configured to be connected to the second plug connector 52.

[0131] Finally, it should be noted that 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: The battery comprises: A battery case, the battery case comprising a first portion and a second portion connected to each other; a heat exchange plate assembly, wherein the heat exchange plate assembly is connected to the second part and an accommodating cavity is formed between the heat exchange plate assembly and the first part, wherein the heat exchange plate assembly is formed with a heat exchange flow channel and a liquid inlet nozzle and a liquid outlet nozzle connected to the heat exchange flow channel, wherein the liquid inlet nozzle is configured to be connected to an external liquid supply pipeline through a first plug connector, and the liquid outlet nozzle is configured to be connected to an external liquid return pipeline through a second plug connector; A battery cell, the battery cell is disposed in the accommodating cavity, and the battery cell is configured to be able to exchange heat with the heat exchange plate assembly; The first part is provided with a first end face facing the second part, the second part is provided with a second end face facing the first part, one of the first end face and the second end face is formed with at least one mounting groove recessed away from the other, and the mounting groove is configured to at least accommodate the first plug connector, and / or the mounting groove is configured to at least accommodate the second plug connector.

2. The battery according to claim 1, characterized in that The second end surface is formed with the mounting groove, and the mounting groove is configured to accommodate the first plug connector and the liquid inlet nozzle, and / or the mounting groove is configured to accommodate the second plug connector and the liquid outlet nozzle.

3. The battery according to claim 2, characterized in that The first end surface is formed with a first notch arranged corresponding to the position of the installation groove.

4. The battery according to claim 2, characterized in that The number of the mounting grooves is two, one of the two mounting grooves is configured to accommodate the liquid inlet nozzle and the first plug connector, and the other of the two mounting grooves is configured to accommodate the liquid outlet nozzle and the second plug connector.

5. The battery according to claim 4, characterized in that The two installation grooves are arranged on the same side of the second portion along its length direction, or the two installation grooves are arranged on the same side of the second portion along its width direction.

6. The battery according to claim 2, characterized in that The heat exchange plate assembly also includes a heat exchange plate, a heat exchange tube and a collecting pipe. The heat exchange plate is formed with a fixing groove for accommodating the battery cell. The battery cell is arranged in the fixing groove and is closely connected to the heat exchange plate. The heat exchange tube and the collecting pipe are arranged on the surface of the heat exchange plate away from the battery cell. The heat exchange flow channel is formed inside the heat exchange tube. The liquid inlet nozzle and the liquid outlet nozzle are respectively connected to the heat exchange flow channel through the collecting pipe.

7. The battery according to claim 6, characterized in that The heat exchange plate is formed with a second notch which is arranged corresponding to the position of the mounting groove.

8. The battery according to claim 6, characterized in that The second part includes a plurality of support beams connected end to end in sequence, and the same side surfaces of the plurality of support beams jointly form the second end surface, wherein a portion of the surface of at least one of the support beams is recessed to form the installation groove.

9. The battery according to claim 8, characterized in that The second part further includes a support member, which is connected to at least one support beam among the plurality of support beams and is used to support the heat exchange tube.

10. The battery according to any one of claims 1 to 9, characterized in that The liquid inlet nozzle includes a first connecting section, a first transition section and a second connecting section which are connected in sequence, wherein the first transition section is arranged at an angle with the first connecting section and the second connecting section respectively, and the second connecting section is configured to be connected to the first plug connector.

11. The battery according to claim 10, characterized in that The second connecting section is arranged on a side of the first connecting section facing the battery cell.

12. The battery according to any one of claims 1 to 9, characterized in that The liquid outlet nozzle includes a third connecting section, a second transition section and a fourth connecting section which are connected in sequence, wherein the second transition section is arranged at an angle with the third connecting section and the fourth connecting section respectively, and the fourth connecting section is configured to be connected to the second plug connector.

13. The battery according to claim 12, characterized in that The fourth connecting section is arranged on a side of the third connecting section facing the battery cell.

14. An electrical device, characterized in that: The invention comprises a battery according to any one of claims 1 to 13, wherein the battery is used to supply power to the electrical device.

15. An energy storage device, characterized in that: The energy storage device comprises a battery according to any one of claims 1 to 13, wherein the energy storage device further comprises an equipment box, the battery is arranged in the equipment box, and is used to store electrical energy for the energy storage device.

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