Battery device and electric device

Abstract

The utility model is suitable for the technical field of batteries, and provides a battery device and a power utilization device, and the battery device comprises a box body and a battery monomer; the heat exchange assembly is used for exchanging heat with the battery monomers and comprises a joint; the fixing piece is connected to the box body, the fixing piece comprises a main body part, at least part of the main body part is arranged in the mounting hole in a penetrating mode, and a first fixing hole is formed in the main body part in a penetrating mode; one end of the connector extends into the first fixing hole, and the connector is detachably connected with the main body part; according to the battery device provided by the embodiment of the invention, the connector and the fixing piece are arranged to be of a split structure, the fixing piece can be matched with connectors of different specifications, under the condition that the specifications of the connectors are different, the fixing and mounting difficulty of the connectors can be reduced through the arrangement, adaptive adjustment does not need to be carried out on the box body, the main pipeline or other structures according to the different connectors, and the practicability is high. The machining difficulty is reduced, the machining cost is reduced, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery device and a power utilization device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] Since a battery monomer needs to be in a suitable temperature environment to have a high charging and discharging efficiency, a heat exchange assembly for controlling the temperature of the battery monomer is very important for a battery device. In the current heat exchange assembly, a connecting flange is arranged on a joint connected with other components outside the battery device, and the connecting flange is connected with a box body as a fixing structure of the joint. In the case that the joint has different specifications, the connecting flanges of different joints are also different in specification, which causes the corresponding structure on the box body to also need to be changed, that is, the adaptability of the current joint is poor, and the processing and installation cost is high. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides a battery device and a power utilization device, which can alleviate the poor adaptability between the joint of the heat exchange assembly and the box body.

[0005] In a first aspect, an embodiment of the application provides a battery device, comprising:

[0006] a box body having a containing space, the box body being provided with a mounting hole, the mounting hole being communicated with the containing space; a battery monomer accommodated in the box body; a heat exchange assembly accommodated in the box body, the heat exchange assembly being used for heat exchange with the battery monomer, the heat exchange assembly comprising a joint; a fixing member connected to the box body, the fixing member comprising a main body part, at least part of the main body part being arranged in the mounting hole; one end of the joint extending into a first fixing hole, and the joint being detachably connected with the main body part.

[0007] In the technical scheme of the embodiment, the joint and the fixing member are arranged in a split structure, and the joint is detachably connected to the fixing member, so as to fix the joint on the box body through the fixing member. At the same time, since the joint and the fixing member are independent structures, the fixing member can have a unified volume and shape, and the hole diameter of the first fixing hole of the fixing member is different, so that the fixing member can adapt to joints of different specifications, and in the case that the specifications of the joints are different, the shape and hole diameter of the mounting hole and other structures do not need to be changed, that is, the box body and other structures do not need to be adaptively adjusted, which reduces the raw material and process cost caused by the adaptive design of the box body and other structures, reduces the processing difficulty of the adaptive structure of the box body, and improves the processing efficiency.

[0008] In some embodiments, the main body part is provided with a first clamping structure, and the joint is provided with a second clamping structure, and the second clamping structure can be clamped to the first clamping structure, so that the joint can be fixed to the fixing member.

[0009] The technical scheme of the embodiment provides specific structures of the fixing structure and the detachable connection of the joint. The first clamping structure is arranged on the main body part of the fixing member, and the second clamping structure is arranged on the joint, so that the joint is fixed to the fixing member through the cooperation of the first clamping structure and the second clamping structure. The joint can also be detached from the fixing member.

[0010] In some embodiments, the first clamping structure includes a first clamping hole arranged on the main body part, and the second clamping structure includes a first arm, one end of the first arm is connected to the joint, and the other end of the first arm is connected with a clamping part, and the clamping part can extend into the first clamping hole and be clamped to the first clamping hole.

[0011] The technical scheme of the embodiment provides specific structures of the first clamping structure and the second clamping structure. The second clamping structure includes the first arm and the clamping part, and the clamping part can be inserted into the first clamping hole, so that the first clamping structure and the second clamping structure can be clamped and cooperated, and the joint can be fixed to the fixing member.

[0012] In some embodiments, one end of the first arm provided with the clamping part is arranged apart from the joint, so that the clamping part can move away from the fixing member and exit the first clamping hole.

[0013] In the technical scheme of the embodiment, one end of the first arm provided with the clamping part is arranged apart from the joint, so that one end of the first arm provided with the clamping part has a certain activity or deformation space, so that the clamping part can be inserted into the first clamping hole and can also exit the first clamping hole, so as to facilitate the disengagement of the first clamping structure and the second clamping structure, and facilitate the detachment of the joint from the fixing member.

[0014] In some embodiments, at least part of the first arm is located in the first fixing hole when the clamping part is clamped to the first clamping hole.

[0015] In the technical scheme of the embodiment, the first arm is located between the inner wall of the first fixing hole and the joint, so as to facilitate the pressing of the first arm by the worker to make the clamping part enter or exit the first clamping hole.

[0016] In some embodiments, the length direction of the first arm is parallel to the axial direction of the first fixing hole, and the clamping part is located at one end of the length direction of the first arm.

[0017] In the technical scheme of the embodiment, the clamping portion can be inserted into the first clamping hole in the case that the connector is inserted along the axial direction of the first fixing hole, so that the clamping portion can be inserted into the first clamping hole to fix the connector on the fixing member, and the insertion direction of the connector can be adapted, and the connector can be more conveniently installed and dismounted.

[0018] In some embodiments, the first clamping structure further comprises a second clamping hole provided on the main body portion, and an opening of the second clamping hole faces the connector; and the second clamping structure further comprises a second arm provided on the connector, one end of the second arm is connected to the connector, and the other end of the second arm extends into the second clamping hole and is inserted into the second clamping hole.

[0019] The technical scheme of the embodiment further provides specific structures of the first clamping structure and the second clamping structure, the second clamping structure comprises the second arm, and the second arm can be inserted into the second clamping hole, so that the first clamping structure and the second clamping structure can be clamped and matched, and the connector can be fixed on the fixing member.

[0020] In some embodiments, the other end of the second arm away from the connector is spaced apart from the connector, so that the other end of the second arm away from the connector can move towards the connector and exit the second clamping hole.

[0021] In the technical scheme of the embodiment, the other end of the second arm away from the connector is spaced apart from the connector, so that the other end of the second arm away from the connector has a certain space for movement or deformation, so that the other end of the second arm away from the connector can be inserted into the second clamping hole and can exit the second clamping hole, so as to facilitate the disengagement of the first clamping structure and the second clamping structure, and facilitate the dismounting of the connector from the fixing member.

[0022] In some embodiments, the length direction of the second arm is arranged at an angle with the axial direction of the first fixing hole, and one end of the second arm along the length direction is inserted into the second clamping hole.

[0023] In the technical scheme of the embodiment, the length direction of the second arm is tangent to the circumferential direction of the first fixing hole, and in the case that one end of the second arm is inserted into the second clamping hole, the connector is difficult to move along the axial direction of the first fixing hole and exit the first fixing hole, so that the second arm can better fix the connector on the fixing member.

[0024] In some embodiments, the box body is provided with a mounting hole, and at least part of the main body portion is arranged in the mounting hole; the main body portion is provided with a first sealing member, the first sealing member is arranged around the main body portion, one side of the first sealing member abuts against the main body portion, and the other side of the first sealing member abuts against the inner wall of the mounting hole.

[0025] In the technical scheme of the embodiment, the first sealing member is arranged on the main body portion, so as to seal the gap between the main body portion and the inner wall of the mounting hole, and reduce the negative influence of the installation of the fixing member on the sealing performance of the box body.

[0026] In some embodiments, the main body part is provided with a second sealing element, the second sealing element is arranged around the joint, one side of the second sealing element abuts the inner wall of the first fixing hole, and the other side of the second sealing element abuts the joint.

[0027] In the technical scheme of the embodiment, the second sealing element is arranged on the main body part to seal the gap between the joint and the first fixing hole, so as to improve the sealing performance between the joint and the fixing element.

[0028] In some embodiments, the joint comprises a connecting part, the connecting part is inserted into the pipe body of the heat exchange assembly; at least part of the connecting part abuts the inner wall of the pipe body of the heat exchange assembly.

[0029] The technical scheme of the embodiment provides the structure of the joint, so that the joint can be connected to the pipe body of the heat exchange assembly, so that the heat exchange medium can enter or discharge the heat exchange assembly through the joint.

[0030] In some embodiments, the connecting part is provided with a sealing part around the circumference thereof, the sealing part sealingly abuts the inner wall of the pipe body of the heat exchange assembly; the sealing part has at least one.

[0031] In the technical scheme of the embodiment, the connecting part comprises the protruding sealing part, so as to seal the gap between the connecting part and the inner wall of the pipe body of the heat exchange assembly through the sealing part, thereby improving the sealing performance between the connecting part and the heat exchange assembly and reducing the risk of liquid leakage.

[0032] In some embodiments, the fixing element further comprises a mounting part connected to the main body part, the mounting part abuts the inner surface of the box or abuts the outer surface of the box, the second fixing hole is arranged on the mounting part; the battery device further comprises a connecting element, one end of the connecting element passes through the second fixing hole and is connected to the box, the other end of the connecting element is crimped to the side of the mounting part away from the box, so as to fix the mounting part to the box.

[0033] In the technical scheme of the embodiment, the fixing element comprises the mounting part, and the connecting element passes through the mounting part and is connected to the box, so as to fix the fixing element to the box.

[0034] In some embodiments, the second fixing hole is provided with an insert, one end of the connecting element passes through the insert and is connected to the box, and the other end of the connecting element is crimped to the side of the insert away from the box.

[0035] In the technical scheme of the embodiment, the insert is arranged in the second fixing hole, so that the connecting element is difficult to directly contact the mounting part, thereby reducing the risk of damage to the mounting part during installation of the connecting element.

[0036] In some embodiments, the heat exchange assembly further comprises a main pipe, at least two sub-pipes, and an adapter, one end of the main pipe is connected with a connector, the sub-pipes are used for heat exchange with the battery monomers, one end of the adapter is connected to the main pipe, and the other end of the adapter is connected to the at least two sub-pipes, so that the at least two sub-pipes are in communication with the main pipe.

[0037] In the technical scheme of the embodiment, the sub-pipes are arranged to enable the heat exchange assembly to exchange heat with each battery monomer through the sub-pipes, and the adapter is arranged to enable the sub-pipes to be in communication with the main pipe through the adapter, so that the heat exchange medium can be distributed and collected in the main pipe.

[0038] In some embodiments, the sub-pipe comprises a plug-in end, and a clamping groove is formed on the outer circumferential side of the plug-in end; the adapter comprises an adapter main body and a sleeve portion connected to the adapter main body, the adapter main body is connected to the main pipe, the sleeve portion is sleeved on the plug-in end, a flange is protruded inwardly along the radial direction of the sleeve portion, and the flange can be clamped in the clamping groove.

[0039] In the technical scheme of the embodiment, the flange is arranged on the adapter, and the flange can be clamped in the clamping groove of the plug-in end, so that the plug-in end is fixed on the adapter through the flange, to facilitate the communication between the sub-pipe and the main pipe.

[0040] In some embodiments, a notch is formed on the one end of the sleeve portion towards the plug-in end.

[0041] In the technical scheme of the embodiment, the notch is formed on the circumferential wall of the sleeve portion, so that the one end of the sleeve portion towards the plug-in end has a certain deformation ability, to facilitate the plug-in end of the sub-pipe to be inserted into the sleeve portion, and the flange to be clamped in the clamping groove.

[0042] In some embodiments, the adapter further comprises a third sealing member, the third sealing member is arranged on the inner wall of the sleeve portion and surrounds the plug-in end, one side of the third sealing member abuts against the sleeve portion, and the other side of the third sealing member abuts against the plug-in end.

[0043] In the technical scheme of the embodiment, the third sealing member is arranged to seal the gap between the inner wall of the sleeve portion and the outer wall of the plug-in end, to reduce the risk of liquid leakage at the connection between the plug-in end and the adapter.

[0044] In some embodiments, the heat exchange assembly comprises a main pipe and a sub-pipe in communication with the main pipe, the sub-pipe is used for heat exchange with the battery monomers; and an exhaust valve is further arranged on the main pipe, one end of the exhaust valve is in communication with the main pipe, and the exhaust valve is used for exhausting the gas in the main pipe to a containing space.

[0045] In the technical scheme of the embodiment, the exhaust valve is arranged to exhaust the gas in the main pipe and the sub-pipe, to reduce the negative impact of the gas on the uniformity of the heat exchange medium.

[0046] In some embodiments, the exhaust valve and the joint are located at two ends of the main pipeline, respectively.

[0047] In the technical solution of the embodiment, the heat exchange medium can enter the main pipeline through the joint and gradually flow to the exhaust valve and fill the main pipeline. In this process, other gases in the main pipeline can be pushed by the heat exchange medium to the exhaust valve and discharged, thereby reducing the risk of residual gas in the main pipeline.

[0048] In some embodiments, the exhaust valve is located at the highest position of the main pipeline along the gravity direction.

[0049] In the technical solution of the embodiment, the exhaust valve is arranged at the high position of the main pipeline along the gravity direction because the gas has a small density, so that more gas in the main pipeline can flow to the exhaust valve and be discharged, thereby further reducing the risk of residual gas in the main pipeline.

[0050] In a second aspect, the embodiments of the present application also provide a battery device.

[0051] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0052] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered limiting the present application. Moreover, the same reference numbers are used to represent the same components throughout the drawings. In the drawings:

[0053] Figure 1 Structure schematic diagram of a vehicle provided by some embodiments of the present application;

[0054] Figure 2 Structure schematic diagram of a battery device provided by some embodiments of the present application;

[0055] Figure 3 Top view schematic diagram of a battery cell and a heat exchange assembly provided by some embodiments of the present application;

[0056] Figure 4 Stereoscopic schematic diagram of a main pipeline and its connected structure provided by some embodiments of the present application;

[0057] Figure 5 Partial sectional view schematic diagram of a box body at a joint provided by some embodiments of the present application;

[0058] Figure 6 A perspective view of a joint provided for some embodiments of the present application;

[0059] Figure 7 A perspective view of a fixing member provided for some embodiments of the present application;

[0060] Figure 8 A front view of a fixing member provided for some embodiments of the present application;

[0061] Figure 9 A perspective view of a battery cell and a heat exchange assembly provided for some embodiments of the present application; Figure 8 A sectional view along line A-A in the figure;

[0062] Figure 10 A front view of a battery cell and a heat exchange assembly provided for some embodiments of the present application;

[0063] Figure 11 A sectional view along line B-B in the figure; Figure 10

[0064] A sectional view along line C in the figure; Figure 12 Figure 11 A perspective view of an adapter provided for some embodiments of the present application.

[0065] Figure 13 The meanings of the labels in the figures are as follows:

[0066] 1000, vehicle;

[0067] 100, battery device;

[0068] 10, box; 101, containing space; 11, first box; 12, second box;

[0069] 20, battery cell;

[0070] 30, heat exchange assembly; 31, main pipeline; 32, joint; 321, second clamping structure; 3211, first arm; 3212, clamping part; 3213, second arm; 322, connecting part; 3221, sealing part; 33, sub-pipeline; 331, plug-in end; 3311, clamping groove; 34, adapter; 341, adapter main body; 342, sleeve part; 3421, flange; 3422, notch; 35, third sealing member; 36, exhaust valve;

[0071] 40, fixing member; 41, main body part; 411, first fixing hole; 412, first clamping structure; 4121, first clamping opening; 4122, second clamping opening; 42, mounting part; 421, second fixing hole; 43, embedded part;

[0072] 40, fixing member; 41, main body part; 411, first fixing hole; 412, first clamping structure; 4121, first clamping opening; 4122, second clamping opening; 42, mounting part; 421, second fixing hole; 43, embedded part; ​

[0073] 50, first seal;

[0074] 60, second seal;

[0075] 200, motor;

[0076] 300, controller. DETAILED DESCRIPTION

[0077] The embodiments of the present application will be described in detail with reference to the drawings, wherein the same reference numerals refer to the same elements throughout. The following embodiments are only used to clarify the technical solutions of the present application, and thus only serve as examples, but cannot be used to limit the protection scope of the present application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise" and "have" and any variations thereof are intended to cover the presence of stated features, integers, actions, steps, operations, objects, components, and / or the like, but do not preclude the presence or addition of one or more other features, integers, actions, steps, operations, objects, components, and / or the like.

[0079] All embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions, if not specifically stated otherwise.

[0080] All technical features and optional technical features of the present application can be combined with each other to form new technical solutions, if not specifically stated otherwise.

[0081] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0082] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0083] In the description of the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0084] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0085] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the embodiments of the present application.

[0086] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0087] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the demand of its market is also increasing.

[0088] In the charging and discharging cycle process of the battery device, the battery monomer will generate heat and cause the internal temperature of the battery device to rise, and the battery monomer needs to be in a suitable environment temperature to have a high charging and discharging efficiency, so the current battery device is provided with a heat exchange component to control the environment temperature of the battery monomer and the battery device through the heat exchange component.

[0089] In the current heat exchange assembly, a pipeline is usually provided to communicate with other components outside the battery device, so that the heat exchange medium enters the pipeline and is discharged from the pipeline. In the current heat exchange assembly, a connector is usually provided at one end of the pipeline, and one end of the connector extends outside the box. A connecting flange is also provided on the connector, and the connector is fixed to the box through the connecting flange to achieve the fixation of the connector.

[0090] Since the connector usually has different size specifications, and the connecting flange is part of the structure of the connector, the size specifications of the connecting flange are also different. This results in the need to make corresponding changes and process corresponding structures on the box when installing connectors of different specifications on the main pipeline. For example, the size of the mounting hole on the box for mounting the connector needs to be changed, and the size and position of the through hole on the box corresponding to the connecting flange also need to be changed. This requires the box to be adaptively designed for connectors of different specifications, which is costly in terms of design and processing.

[0091] Based on the above considerations, in order to alleviate the poor adaptability between the connector and the box of the heat exchange assembly, the present application provides a battery device, which provides a separate connector and a fixing member. The fixing member is connected to the box, and one end of the connector passes through the fixing member and is detachably connected to the fixing member. At this time, the fixing member serves as the connecting flange of the current connector, and the connector does not need to be provided with a connecting flange. The fixing member and the connector are independent structures and are separately provided.

[0092] In such a battery device, the connector and the fixing member are provided as separate structures, and the connector is detachably connected to the fixing member to fix the connector to the box through the fixing member. At the same time, since the connector and the fixing member are independent structures, the fixing member can have a uniform size and shape, and the first fixing hole of the fixing member can have different diameters, so that the fixing member can adapt to connectors of different specifications, and the shape and diameter of the mounting hole do not need to be changed when the specifications of the connector are different. That is, the box and other structures do not need to be adaptively adjusted, which reduces the raw material and process costs caused by the adaptive design of the box and other structures, reduces the processing difficulty of the adaptive structure of the box, and improves the processing efficiency.

[0093] The battery device disclosed in the present application can be used in various energy storage systems using the battery device as a power source or as an energy storage element. The power consumption device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0094] The following embodiments are described by taking a vehicle 1000 as an example.

[0095] Reference Figure 1 , Figure 1 A structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery, which can be arranged at the bottom, head, or tail of the vehicle 1000. The battery can be used for power supply of the vehicle 1000, for example, the battery can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 300 and a motor 200, and the controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0096] In some embodiments of the present application, the battery can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0097] Reference Figure 2 , Figure 2 An exploded structural schematic diagram of the battery device 100 is provided for some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application can include one or more battery monomer 20 assemblies for providing voltage and capacity. The battery monomer 20 assembly can include a plurality of battery monomers 20 connected in series, in parallel, or in a mixed connection mode through a busbar component.

[0098] In some embodiments, the battery monomer 20 assembly is usually formed by arranging a plurality of battery monomers 20.

[0099] As an example, the battery monomer 20 assembly can be a battery module, which is formed by arranging and fixing a plurality of battery monomers 20 into an independent module. As an example, the battery module can be formed by binding a plurality of battery monomers 20 with a cable tie.

[0100] In some embodiments, the battery device 100 can be a battery pack, which includes a box body 10 and one or more battery monomer 20 assemblies accommodated in the box body 10.

[0101] As an example, the battery monomer 20 assembly can be a battery module, which can be accommodated in the box body 10 by fixing the battery module in the box body 10.

[0102] As an example, the battery cell 20 assembly can also be housed in the case 10 by directly fixing a plurality of battery cells 20 to the case 10.

[0103] As an example, the case 10 can include a first case 11 and a second case 12. The first case 11 and the second case 12 are fastened so that an enclosed space is formed inside the case 10 to accommodate the battery cell 20 assembly. The enclosed here means covered or closed, which can be sealed or unsealed. The first case 11 can be a top cover or a bottom plate.

[0104] As an example, the case 10 can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame, so that an enclosed space is formed inside the case 10 to accommodate the battery cell 20 assembly.

[0105] In some embodiments, the case 10 can be part of the chassis structure of the vehicle 1000. For example, part of the case 10 can be at least part of the floor of the vehicle 1000, or part of the case 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000.

[0106] In the first aspect, with reference to Figures 3 to 7 In the first aspect, with reference to

[0107] In the drawings, the direction of the X-axis is the length direction of the battery device 100, the direction of the Y-axis is the width direction of the battery device 100, and the direction of the Z-axis is the height direction of the battery device 100.

[0108] The case 10 refers to a structure in the battery device 100 for providing an accommodation space 101 for the battery cell 20 and other structures. The shape of the case 10 can be a prism, a cylinder, or other shapes. The material of the case 10 can include metal, plastic, or other materials.

[0109] The accommodation space 101 refers to a space structure in the box 10 for accommodating the battery monomer 20 and other structures, and is formed in the box 10. The accommodation space 101 can be a prismatic space structure, a cylindrical space structure, or other space structures, and the shape of the accommodation space 101 can be set according to the shape of the box 10.

[0110] The mounting hole refers to a hole structure provided on the box 10. The mounting hole can be a circular hole, a square hole, or other hole structures. The mounting hole can be a straight hole, a stepped hole, a tapered hole, or other hole structures. The mounting hole can be provided on the top cover, the bottom plate, the frame structure, or other parts of the box 10. The number of mounting holes can be one, two, or more, and the number of mounting holes can be set according to the number of fixing members 40 and connectors 32.

[0111] The mounting hole is in communication with the accommodation space 101 and penetrates the box 10, so that at least part of the connector 32 can pass through the box 10 and communicate with other structures outside.

[0112] The battery monomer 20 refers to the smallest unit of the battery device 100. The number of battery monomers 20 can be one, two, or more. When the number of battery monomers 20 is at least two, the battery monomers 20 can be connected in series, parallel, or mixed connection. The battery monomers 20 can be arranged in one direction or arrayed in two different directions. The battery monomers 20 can be fixed and constrained by a strap, a plate, or other structures, or the battery monomers 20 can be directly arranged in the accommodation space 101 of the box 10.

[0113] The battery monomer 20 is accommodated in the accommodation space 101. The battery monomer 20 can be directly connected to the bottom plate, the top cover, or other walls of the box 10, or the battery monomer 20 can be indirectly connected to the box 10 through an intermediate structure to be accommodated in the accommodation space 101.

[0114] The heat exchange assembly 30 refers to a structure in the battery device 100 for heat exchange with the battery monomer 20. The heat exchange assembly 30 can exchange heat with the battery monomer 20 to control the temperature of the battery monomer 20. The heat exchange assembly 30 can lower the temperature of the battery monomer 20 or increase the temperature of the battery monomer 20. The heat exchange assembly 30 can be a plate structure, a pipe structure, or other structures. The heat exchange assembly 30 can accommodate a heat exchange medium to exchange heat with the battery monomer 20. The heat exchange medium can include liquid, gas, solid, or mixed media.

[0115] The heat exchange assembly 30 is accommodated in the accommodation space 101, and the heat exchange assembly 30 can be directly connected to the bottom plate, the top cover or other wall of the box body 10, or indirectly connected to the box body 10 through an intermediate structure to be accommodated in the accommodation space 101.

[0116] The joint 32 refers to a connecting piece for connecting the heat exchange assembly 30 with other structures outside, one end of the joint 32 can be connected with a flow channel in the heat exchange assembly 30, and the other end of the joint 32 can be connected with other structures outside the box body 10, so that the heat exchange medium in the heat exchange assembly 30 can be discharged to the other structures connected with the joint 32 through the joint 32, and the other structures connected with the joint 32 can also deliver the heat exchange medium to the heat exchange assembly 30 through the joint 32; the joint 32 can be connected to the heat exchange assembly 30 by adhesion, welding, clamping or other means; the joint 32 can be a prismatic structural piece, a cylindrical structural piece or a structural piece of other shapes; the material of the joint 32 can include metal, plastic or other materials.

[0117] The fixing piece 40 refers to a structure for fixing the joint 32 to the box body 10 in the battery device 100, and the fixing piece 40 can be a cylindrical structure, a prismatic structure or a structure of other shapes; the fixing piece 40 is connected to the box body 10, and the fixing piece 40 can be connected to the box body 10 by screwing, clamping or other means; the material of the fixing piece 40 can include metal, plastic or other materials.

[0118] The main body part 41 refers to a structure in the fixing piece 40 mainly used for fixing the joint 32 and providing a mounting base for other structures; the main body part 41 can be a cylindrical structure, a prismatic structure or a structure of other shapes; at least part of the main body part 41 is arranged in the mounting hole, that is, one end of the main body part 41 is located in the box body 10, and the other end extends out of the box body 10; the main body part 41 can be only partially arranged in the mounting hole, or the main body part 41 can be completely located in the mounting hole; the material of the main body part 41 can include metal, plastic or other materials.

[0119] The main body part 41 is provided with a first fixing hole 411, one end of the first fixing hole 411 is connected with the accommodation space 101, and the other end of the first fixing hole 411 is connected with a space outside the box body 10; the first fixing hole 411 can be a round hole, a square hole or a hole structure of other shapes, and the first fixing hole 411 can be a straight hole, a stepped hole, a tapered hole or a hole structure of other shapes.

[0120] One end of the connector 32 extends into the first fixing hole 411, at this time, the end of the connector 32 can be located in the first fixing hole 411, or can pass through the first fixing hole 411 and extend out of the first fixing hole 411, at this time, the end is located outside the box body 10, so as to be connected with other structures outside the box body 10. For example, one end of the connector 32 can be located in the first fixing hole 411, at this time, a part of the external structure connected with the connector 32 can also extend into the first fixing hole 411 and be connected with the connector 32; for example, one end of the connector 32 can also directly pass through the first fixing hole 411 and extend out of the box body 10, so as to be connected with other structures outside the box body 10.

[0121] The connector 32 is detachably connected with the main body part 41, at this time, the connector 32 can be connected with the main body part 41 by screwing, clamping, inserting or other ways; in the case of detachable connection between the connector 32 and the main body part 41, the connector 32 can be detached from the main body part 41, so as to be replaced or repaired, the connector 32 can be installed on the main body part 41 and fixed to the box body 10 through the main body part 41.

[0122] The fixing part 40 can be adapted to different specifications and sizes of the connector 32, different specifications of the connector 32 can have different length sizes along the axial direction of the first fixing hole 411, or can have different diameter sizes along the radial direction of the first fixing hole 411; for example, in the case that different specifications of the connector 32 have different length sizes along the axial direction of the first fixing hole 411, different specifications of the connector 32 can be directly installed and detached; for example, in the case that different specifications of the connector 32 have different diameter sizes along the radial direction of the first fixing hole 411, an intermediate structure can be arranged between the connector 32 and the inner wall surface of the first fixing hole 411, in the case of detachable connection between the connector 32 and the main body part 41, the connector 32 is further fixed, or the fixing part 40 can have different hole diameters and shapes of the first fixing hole 411 with the same volume and shape, so as to adapt to different specifications of the connector 32.

[0123] In the processing and production process of the battery device 100, because the connector 32 is fixed to the box body 10 through the fixing part 40, and because the same specification of the fixing part 40 can be adapted to different specifications of the connector 32, in the case of installing different specifications of the connector 32, because the specification of the fixing part 40 is the same, the structure for installing the fixing part 40 on the box body 10 does not need to be adapted and adjusted for the connector 32, which reduces the processing cost, reduces the installation difficulty of the connector 32, and improves the installation efficiency of the connector 32.

[0124] In the embodiment, the joint 32 and the fixing member 40 are arranged in a split structure, and the joint 32 is detachably connected to the fixing member 40, so as to be fixed on the box body 10 through the fixing member 40. Meanwhile, since the joint 32 and the fixing member 40 are independent structures, the fixing member 40 can have a unified size and shape, and the first fixing hole 411 of the fixing member 40 has different hole diameters, so that the fixing member 40 can be adapted to different specifications of the joint 32, and the shape and hole diameter of the fixing hole do not need to be changed under the condition that the specifications of the joint 32 are different, that is, the box body 10 and other structures do not need to be adaptively adjusted, which reduces the raw material and process cost caused by the adaptive design of the box body 10 and other structures, reduces the processing difficulty of the adaptive structure of the box body 10 and other structures, and improves the processing efficiency.

[0125] With reference to Figure 6 、 Figure 7 In some embodiments, the main body part 41 is provided with a first clamping structure 412, and the joint 32 is provided with a second clamping structure 321, and the second clamping structure 321 can be clamped to the first clamping structure 412, so that the joint 32 can be fixed to the fixing member 40.

[0126] The first clamping structure 412 refers to a structure in the fixing member 40 for clamping cooperation with the joint 32. The first clamping structure 412 can include a clamping body, a buckle, a socket or other structures. The first clamping structure 412 is arranged on the main body part 41. According to the specific structure of the first clamping structure 412, the first clamping structure 412 can be arranged on the main body part 41 by adhesion, welding, screwing or other ways. The first clamping structure 412 can also be arranged on the main body part 41 by drilling and the like. The first clamping structure 412 can also be integrally formed with the main body part 41.

[0127] The second clamping structure 321 refers to a structure in the joint 32 for clamping cooperation with the fixing member 40. The second clamping structure 321 can include a clamping body, a buckle, a socket or other structures. The second clamping structure 321 is arranged on the joint 32. According to the specific structure of the second clamping structure 321, the second clamping structure 321 can be arranged on the joint 32 by adhesion, welding, screwing or other ways. The second clamping structure 321 can also be arranged on the joint 32 by drilling and the like. The second clamping structure 321 can also be integrally formed with the joint 32.

[0128] The first clamping structure 412 can be clamped with the second clamping structure 321 to fix the connector 32 on the fixing member 40; in the case that the connector 32 is inserted into the first fixing hole 411, the second clamping structure 321 on the connector 32 can be clamped with the first clamping structure 412 on the fixing member 40 to fix the connector 32 on the fixing member 40, and at this time, the second clamping structure 321 on the connector 32 can be located inside or outside the first fixing hole 411.

[0129] In the case that the connector 32 needs to be detached from the fixing member 40, the second clamping structure 321 can be first detached from the first clamping structure 412, and then the connector 32 can be withdrawn from the first fixing hole 411, so as to facilitate replacement and maintenance of the connector 32.

[0130] The embodiment provides some specific structures of the fixing structure and the detachable connection of the connector 32, the first clamping structure 412 is arranged on the main body part 41 of the fixing member 40, and the second clamping structure 321 is arranged on the connector 32, so as to fix the connector 32 on the fixing member 40 through mutual cooperation of the first clamping structure 412 and the second clamping structure 321; and the connector 32 can also be detached from the fixing member 40.

[0131] Reference 5 to Figure 9 In some embodiments, the first clamping structure 412 includes a first clamping hole 4121 arranged on the main body part 41; the second clamping structure 321 includes a first arm 3211, one end of the first arm 3211 is connected to the connector 32, and the other end of the first arm 3211 is connected with a clamping part 3212, and the clamping part 3212 can extend into the first clamping hole 4121 and be clamped in the first clamping hole 4121.

[0132] The first clamping hole 4121 refers to an opening structure on the main body part 41, the first clamping hole 4121 is a structure of the first clamping structure 412, the first clamping hole 4121 can penetrate the main body part 41 or not, the opening of the first clamping hole 4121 can face the first fixing hole 411, or the opening of the first clamping hole 4121 can face away from the first fixing hole 411 and face outside the main body part 41; the shape of the first clamping hole 4121 can be circular, square or other shapes; the first clamping structure 412 can include one first clamping hole 4121, or two or more first clamping holes 4121.

[0133] The first arm 3211 refers to a clamping structure arranged on the connector 32, and can be a prismatic structure, a cylindrical structure, a square plate body or other shaped structure. One end of the first arm 3211 is connected to the connector 32, and the first arm 3211 can be connected to the connector 32 by bonding, welding, screwing or other means. The first arm 3211 can also be integrally formed with the connector 32. The second clamping structure 321 can include one first arm 3211, or two or more first arms 3211. The material of the first arm 3211 can include metal, plastic or other materials, and can be the same as or different from the material of the connector 32.

[0134] The clamping part 3212 refers to a structure capable of being inserted into or withdrawn from the first clamping hole 4121, and the clamping part 3212 and the first arm 3211 together constitute one of the second clamping structures 321. The clamping part 3212 can be a prismatic structure, a cylindrical structure, a prism or other structure. The clamping part 3212 is connected to the first arm 3211, and can be connected to the first arm 3211 by bonding, welding, screwing or other means. The clamping part 3212 can also be integrally formed with the first arm 3211. The material of the clamping part 3212 can include metal, plastic or other materials, and can be the same as or different from the material of the first arm 3211.

[0135] When the connector 32 is inserted into the first fixing hole 411 at one end, the clamping part 3212 can be inserted into the first clamping hole 4121 to fix the connector 32 on the fixing part 40. When the clamping part 3212 is inserted into the first clamping hole 4121, if the connector 32 moves along the axial direction of the first fixing hole 411, the clamping part 3212 will abut against the inner wall of the first clamping hole 4121 and hinder the further movement of the connector 32, thereby achieving the fixation of the connector 32.

[0136] When the connector 32 is inserted into the first fixing hole 411 at one end, the first arm 3211 and the clamping part 3212 can be located outside the first fixing hole 411, at which time the opening of the first clamping hole 4121 can face away from the first fixing hole 411 and towards the outside of the main body part 41. The clamping part 3212 is clamped to the first clamping hole 4121 outside the first fixing hole 411. The first arm 3211 and the clamping part 3212 can also be located inside the first fixing hole 411, at which time the opening of the first clamping hole 4121 faces towards the inside of the first fixing hole 411. The clamping part 3212 is clamped to the first clamping hole 4121 inside the first fixing hole 411.

[0137] In the case of needing to detach the connector 32 from the fixing member 40, the first arm 3211 needs to be pushed or the clamping portion 3212 needs to be directly pressed, so that the clamping portion 3212 exits the first clamping hole 4121, and then the connector 32 is taken out from the first fixing hole 411.

[0138] The embodiment provides specific structures of the first clamping structure 412 and the second clamping structure 321, so that the second clamping structure 321 includes the first arm 3211 and the clamping portion 3212, and the clamping portion 3212 can be inserted into the first clamping hole 4121, so that the first clamping structure 412 and the second clamping structure 321 can be clamped and matched, and the connector 32 can be fixed on the fixing member 40 in this way.

[0139] Reference Figure 6 In some embodiments, one end of the first arm 3211, at which the clamping portion 3212 is arranged, is arranged to be spaced apart from the connector 32, so that the clamping portion 3212 can move away from the fixing member 40 and exit the first clamping hole 4121.

[0140] One end of the first arm 3211, at which the clamping portion 3212 is arranged, is arranged to be spaced apart from the connector 32, that is, one end of the first arm 3211, at which the clamping portion 3212 is arranged, can move towards the connector 32 and make the clamping portion 3212 move accordingly.

[0141] In the case of inserting one end of the connector 32 into the first fixing hole 411 and needing to detach the connector 32, the first arm 3211 can be pressed, and one end of the first arm 3211, at which the clamping portion 3212 is arranged, can be moved towards the connector 32, so that the clamping portion 3212 can exit the first clamping hole 4121, thereby facilitating the detachment of the connector 32 from the fixing member 40; it can be understood that, at this time, the opening of the first clamping hole 4121 can face the first fixing hole 411, and the clamping portion 3212 can be inserted into or exit the first clamping hole 4121 from the first fixing hole 411.

[0142] During the process of inserting the connector 32 into the first fixing hole 411, the first arm 3211 can be pressed by a worker, and one end of the first arm 3211, at which the clamping portion 3212 is arranged, can be moved towards the connector 32, so that the clamping portion 3212 enters the first fixing hole 411; after the connector 32 is inserted in place, the first arm 3211 can be released, and the elastic rebound of the first arm 3211 can make the clamping portion 3212 be inserted into the first clamping hole 4121; at this time, the first arm 3211 can be an elastic member, and the material of the first arm 3211 can include metal, plastic or other materials with elasticity.

[0143] In the process of inserting the joint 32 into the first fixing hole 411, the main body part 41 can also directly press and hold the clamping part 3212 and make the end of the first arm 3211 with the clamping part 3212 deform towards the direction close to the joint 32; after the joint 32 is inserted in place, the clamping part 3212 corresponds to the first clamping hole 4121, the clamping part 3212 loses the constraint of the main body part 41, and the first arm 3211 rebounds to enable the clamping part 3212 to be inserted into the first clamping hole 4121. At this time, the first arm 3211 can be an elastic piece, and the material of the first arm 3211 can include metal, plastic or other materials with elasticity.

[0144] In the embodiment, the end of the first arm 3211 with the clamping part 3212 is arranged to be spaced apart from the joint 32, so that the end of the first arm 3211 with the clamping part 3212 has a certain activity or deformation space, so that the clamping part 3212 can be inserted into the first clamping hole 4121 and also can be withdrawn from the first clamping hole 4121, so as to facilitate the disengagement of the first clamping structure 412 and the second clamping structure 321, and also facilitate the disassembly of the joint 32 from the fixing part 40.

[0145] In some embodiments, at least part of the first arm 3211 is located in the first fixing hole 411 when the clamping part 3212 is clamped in the first clamping hole 4121.

[0146] In the case that the clamping part 3212 is clamped in the first clamping hole 4121, that is, in the case that the joint 32 is inserted into the first fixing hole 411, at least part of the first arm 3211 is located in the first fixing hole 411, and at this time the opening of the first clamping hole 4121 faces the inside of the first fixing hole 411. The clamping part 3212 can be inserted into or withdrawn from the first fixing hole 411 from the inside of the first fixing hole 411.

[0147] In the case that the clamping part 3212 is clamped in the first clamping hole 4121, the first arm 3211 can also be located only partially in the first fixing hole 411, and at this time the end of the first arm 3211 connected with the joint 32 can be located outside the first fixing hole 411, so as to facilitate the pressing of the first arm 3211 by the worker; in the case that the clamping part 3212 is clamped in the first clamping hole 4121, the first arm 3211 can also be completely accommodated in the first fixing hole 411, so as to reduce the risk of accidental touch of the first arm 3211.

[0148] In the case that the clamping part 3212 is clamped in the first clamping hole 4121, at least part of the first arm 3211 is located in the first fixing hole 411, and at this time the worker can drive the clamping part 3212 to withdraw from the first clamping hole 4121 by pressing the first arm 3211 in the direction, which is more convenient to operate.

[0149] In the embodiment, the first arm 3211 is located between the inner wall of the first fixing hole 411 and the connector 32, so that the staff can press the first arm 3211 to make the clamping part 3212 enter or exit the first clamping hole 4121.

[0150] Reference Figure 6 In some embodiments, the length direction of the first arm 3211 is parallel to the axial direction of the first fixing hole 411, and the clamping part 3212 is located at one end of the length direction of the first arm 3211.

[0151] The length direction of the first arm 3211 is parallel to the axial direction of the first fixing hole 411, that is, the length direction of the first arm 3211 is consistent with the direction in which the connector 32 is inserted into the first fixing hole 411, that is, the length direction of the first arm 3211 is adapted to the insertion direction of the connector 32, which can reduce the negative impact of the first arm 3211 on the insertion of the connector 32, and facilitate the installation and disassembly of the connector 32.

[0152] In the embodiment, the clamping part 3212 can be inserted into the first clamping hole 4121 when the connector 32 is inserted along the axial direction of the first fixing hole 411, so that the clamping part 3212 can be inserted into the first clamping hole 4121 to fix the connector 32 on the fixing part 40, and also adapt to the insertion direction of the connector 32, which is more convenient for the installation and disassembly of the connector 32.

[0153] Reference Figures 6 to 9 In some embodiments, the first clamping structure 412 further comprises a second clamping hole 4122 provided on the main body part 41, and the opening of the second clamping hole 4122 faces the connector 32; and the second clamping structure 321 further comprises a second arm 3213 provided on the connector 32, one end of the second arm 3213 is connected to the connector 32, and the other end of the second arm 3213 extends into the second clamping hole 4122 and is inserted into the second clamping hole 4122.

[0154] The second clamping hole 4122 refers to an opening structure on the main body part 41, and the second clamping hole 4122 is a structure of the first clamping structure 412. The second clamping hole 4122 can penetrate the main body part 41 or not, and the opening of the second clamping hole 4122 can face the first fixing hole 411 or the connector 32; the shape of the second clamping hole 4122 can be circular, square or other shapes; the first clamping structure 412 can include one second clamping hole 4122, or two or more second clamping holes 4122.

[0155] The second arm 3213 refers to a clamping structure arranged on the joint 32. The second arm 3213 can be a prismatic structure, a cylindrical structure, a square plate body, or a structure of other shapes. One end of the second arm 3213 is connected to the joint 32. The second arm 3213 can be connected to the joint 32 by bonding, welding, screwing, or other means. The second arm 3213 can also be integrally formed with the joint 32. The second clamping structure 321 can include one second arm 3213, or two or more second arms 3213. The material of the second arm 3213 can include metal, plastic, or other materials. The material of the second arm 3213 can be the same as or different from that of the joint 32.

[0156] When the joint 32 is inserted into the first fixing hole 411 at one end, one end of the second arm 3213 can be inserted into the second clamping hole 4122 to fix the joint 32 on the fixing member 40. When one end of the second arm 3213 is inserted into the second clamping hole 4122, if the joint 32 moves along the axial direction of the first fixing hole 411, one end of the second arm 3213 will abut against the inner wall of the second clamping hole 4122 and hinder the further movement of the joint 32, thereby achieving the fixation of the joint 32.

[0157] When the joint 32 is inserted into the first fixing hole 411 at one end, the second arm 3213 is located in the first fixing hole 411. At this time, the opening of the second clamping hole 4122 faces the inside of the first fixing hole 411, and the end of the second arm 3213 away from the joint 32 is clamped in the second clamping hole 4122 in the first fixing hole 411.

[0158] When it is necessary to disassemble the joint 32 from the fixing member 40, the second arm 3213 needs to be actuated so that one end of the second arm 3213 exits the second clamping hole 4122, and then the joint 32 is taken out of the first fixing hole 411.

[0159] The embodiment further provides specific structures of the first clamping structure 412 and the second clamping structure 321, so that the second clamping structure 321 includes the second arm 3213, and the second arm 3213 can be inserted into the second clamping hole 4122, so that the first clamping structure 412 and the second clamping structure 321 can be clamped and matched, and the joint 32 can be fixed on the fixing member 40.

[0160] Reference Figure 6 In some embodiments, the end of the second arm 3213 away from the joint 32 is arranged to be spaced apart from the joint 32, so that the end of the second arm 3213 away from the joint 32 can move towards the joint 32 and exit the second clamping hole 4122.

[0161] The second arm 3213 is spaced apart from the joint 32 at one end thereof, that is, the one end of the second arm 3213 can move towards the joint 32 and can exit the second clamping hole 4122.

[0162] In the case where the joint 32 is inserted into the first fixing hole 411 and needs to be disassembled, the second arm 3213 can be pressed, and the one end of the second arm 3213 away from the joint 32 can be moved towards the joint 32, so that the one end of the second arm 3213 away from the joint 32 can exit the second clamping hole 4122, thereby facilitating disassembly of the joint 32 from the fixing member 40.

[0163] During insertion of the joint 32 into the first fixing hole 411, the second arm 3213 can be pressed, and the one end of the second arm 3213 away from the joint 32 can be moved towards the joint 32, so that the one end of the second arm 3213 away from the joint 32 can enter the first fixing hole 411; after the joint 32 is inserted in place, the second arm 3213 can be released, and the second arm 3213 can be inserted into the second clamping hole 4122 by springing back, and the second arm 3213 can be an elastic member, and the material of the second arm 3213 can include metal, plastic or other elastic materials.

[0164] During insertion of the joint 32 into the first fixing hole 411, the main body 41 can directly press the one end of the second arm 3213 away from the joint 32 and deform the one end of the second arm 3213 away from the joint 32 towards the joint 32; after the joint 32 is inserted in place, the one end of the second arm 3213 away from the joint 32 corresponds to the second clamping hole 4122, the one end of the second arm 3213 away from the joint 32 is no longer constrained by the main body 41, and the second arm 3213 can be inserted into the second clamping hole 4122 by springing back, and the second arm 3213 can be an elastic member, and the material of the second arm 3213 can include metal, plastic or other elastic materials.

[0165] In the embodiment, the one end of the second arm 3213 away from the joint 32 is spaced apart from the joint 32, so that the one end of the second arm 3213 away from the joint 32 has a certain space for movement or deformation, so that the one end of the second arm 3213 away from the joint 32 can be inserted into the second clamping hole 4122 and can exit the second clamping hole 4122, so as to facilitate disengagement of the first clamping structure 412 and the second clamping structure 321, and facilitate disassembly of the joint 32 from the fixing member 40.

[0166] In some embodiments, the second arm 3213 is arranged at an angle with the axial direction of the first fixing hole 411, and one end of the second arm 3213 along the length direction is inserted into the second clamping hole 4122.

[0167] The length direction of the second arm 3213 is arranged at an angle with the axial direction of the first fixing hole 411, that is, the length direction of the second arm 3213 is not parallel to the circumferential direction of the first fixing hole 411; the length direction of the second arm 3213 can be perpendicular to the axial direction of the first fixing hole 411, or can be arranged at other angles with the axial direction of the first fixing hole 411.

[0168] For example, the length direction of the second arm 3213 is tangent to the circumferential direction of the first fixing hole 411.

[0169] In the process of inserting the joint 32 into the first fixing hole 411, the wire presses the end of the second arm 3213 away from the joint 32, so that the second arm 3213 can enter the first fixing hole 411; then the second arm 3213 enters the first fixing hole 411 with a part of the joint 32; after the joint 32 is inserted in place, the second arm 3213 corresponds to the second clamping hole 4122, and the end of the second arm 3213 away from the joint 32 is inserted into the second clamping hole 4122. Because the length direction of the second arm 3213 is arranged at an angle with the axial direction of the first fixing hole 411, if the joint 32 is directly pulled along the axial direction of the first fixing hole 411, the second arm 3213 will abut against the inner wall of the second clamping hole 4122, and the inner wall of the second clamping hole 4122 will hinder the movement of the second arm 3213, so as to hinder the joint 32 from exiting the first fixing hole 411.

[0170] In the case where the joint 32 needs to be removed from the first fixing hole 411, the joint 32 can be rotated first, so that the end of the second arm 3213 away from the joint 32 exits the corresponding second clamping hole 4122, and then the joint 32 is pulled out along the circumferential direction of the first fixing hole 411.

[0171] For example, in the case where the first clamping structure 412 includes the first clamping hole 4121 and the second clamping hole 4122, and the second clamping structure 321 includes the first arm 3211 and the second arm 3213, the length direction of the first arm 3211 is parallel to the axial direction of the first fixing hole 411, and the length direction of the second arm 3213 is arranged at an angle with the axial direction of the first fixing hole 411. At this time, the first arm 3211 and the clamping part 3212 can limit the movement of the joint 32 along the axial direction and the circumferential direction of the first fixing hole 411, and the second arm 3213 can limit the movement of the joint 32 along the axial direction of the first fixing hole 411; because the second arm 3213 is located in the first fixing hole 411, it is difficult to be touched by mistake, so the second arm 3213 can be redundant to the first arm 3211, so as to further reduce the risk of the joint 32 being separated from the fixing part 40 due to mistaken touch.

[0172] In this embodiment, the length direction of the second arm 3213 is tangent to the circumference of the first fixing hole 411, and in the case where the second arm 3213 is inserted into the second clamping hole 4122, the joint 32 is difficult to move along the axial direction of the first fixing hole 411 and exit the first fixing hole 411, so that the second arm 3213 can better fix the joint 32 on the fixing member 40.

[0173] Reference Figures 6 to 9 In some embodiments, a mounting hole is formed on the box body 10, and at least part of the main body portion 41 passes through the mounting hole; the main body portion 41 is provided with a first sealing member 50, the first sealing member 50 is arranged around the main body portion 41, one side of the first sealing member 50 abuts against the main body portion 41, and the other side of the first sealing member 50 abuts against the inner wall of the mounting hole.

[0174] The mounting hole refers to a hole structure formed on the box body 10, which can be a circular hole, a square hole or other shaped hole structure, and can be a straight hole, a stepped hole, a tapered hole or other shaped hole structure; the mounting hole can be arranged on the top cover, the bottom plate, the frame structure or other parts of the box body 10; the number of mounting holes can be one, two or more, and the number of mounting holes can also be set according to the number of fixing members 40 and joints 32.

[0175] The mounting hole penetrates the box body 10, so that at least part of the main body portion 41 can pass through the box body 10, and the joint 32 can communicate with other structures outside through the first fixing hole 411 of the main body portion 41.

[0176] The first sealing member 50 refers to a structure for sealing the gap between the main body portion 41 and the inner wall of the mounting hole, and the first sealing member 50 is arranged around the main body portion 41; according to the shape of the main body portion 41 and the mounting hole, the first sealing member 50 can be a circular ring structure, a square ring structure or other shaped structure; the number of first sealing members 50 can be one, two or more; the material of the first sealing member 50 can include metal, rubber, plastic or other materials.

[0177] The first sealing member 50 is arranged on the main body portion 41, and can be arranged on the main body portion 41 by adhesion, screwing, clamping or other means; for example, an annular groove structure is formed on the outer circumferential surface of the main body portion 41, and part of the first sealing member 50 is clamped in the groove structure.

[0178] The side of the first sealing member 50 away from the main body portion 41 abuts against the inner wall of the mounting hole to seal the gap between the main body portion 41 and the inner wall of the mounting hole, so as to reduce the risk of impurities outside the box body 10 entering the box body 10 through the gap between the main body portion 41 and the inner wall of the mounting hole, and improve the sealing performance of the box body 10.

[0179] In the embodiment, the first sealing member 50 is arranged on the main body 41 to seal the gap between the main body 41 and the inner wall of the mounting hole, so as to reduce the negative impact of the mounting of the fixing member 40 on the sealing performance of the cabinet 10.

[0180] Reference Figures 6 to 9 In some embodiments, the main body 41 is provided with a second sealing member 60, the second sealing member 60 is arranged around the joint 32, one side of the second sealing member 60 abuts against the inner wall of the first fixing hole 411, and the other side of the second sealing member 60 abuts against the inner wall of the mounting hole.

[0181] The second sealing member 60 refers to a structure for sealing the gap between the joint 32 and the inner wall of the first fixing hole 411, the second sealing member 60 is arranged around the main body 41, according to the shape of the joint 32 and the first fixing hole 411, the second sealing member 60 can be a circular ring structure, or a square ring structure or other shape structure; the number of the second sealing member 60 can be one, two or more; the material of the second sealing member 60 can include metal, rubber, plastic or other materials.

[0182] The second sealing member 60 can be arranged on the joint 32 or the inner wall of the first fixing hole 411; the second sealing member 60 can be arranged on the joint 32 or the inner wall of the first fixing hole 411 by adhesion, screwing, clamping or other ways; for example, a ring-shaped groove structure is arranged on the inner wall of the first fixing hole 411, and a part of the second sealing member 60 is clamped in the groove structure.

[0183] One side of the second sealing member 60 abuts against the inner wall of the first fixing hole 411, and the other side of the second sealing member 60 abuts against the joint 32, so as to seal the gap between the joint 32 and the inner wall of the first fixing hole 411, so as to reduce the risk of impurities outside the cabinet 10 entering the cabinet 10 through the gap between the joint 32 and the inner wall of the first fixing hole 411, and improve the sealing performance of the cabinet 10.

[0184] In the embodiment, the second sealing member 60 is arranged on the main body 41 to seal the gap between the joint 32 and the first fixing hole 411, so as to improve the sealing performance between the joint 32 and the fixing member 40.

[0185] Reference Figure 6 In some embodiments, the joint 32 includes a connecting portion 322 connected to the main pipeline 31, the connecting portion 322 is inserted into the pipe body of the heat exchange assembly 30; at least a part of the connecting portion 322 abuts against the inner wall of the pipe body of the heat exchange assembly 30.

[0186] The connecting portion 322 refers to a structure on the joint 32 for connecting with the heat exchange assembly 30. The connecting portion 322 can be in a cylindrical structure, a cold cylindrical structure or other shaped structure. The connecting portion 322 can be connected to the joint 32 by welding, bonding or other means. The connecting portion 322 can be integrally formed with the joint 32. The material of the connecting portion 322 can include metal, plastic or other materials. The material of the connecting portion 322 can be the same as that of the joint 32.

[0187] The connecting portion 322 is inserted into the pipe body of the heat exchange assembly 30. The pipe body of the heat exchange assembly 30 refers to a structure in the heat exchange assembly 30 for the flow of heat exchange medium. The pipe body can be a square, circular or other shaped pipe structure. The pipe body can be a structure formed by two plate bodies being spliced with each other. The connecting portion 322 is inserted into the pipe body of the heat exchange assembly 30, so that the joint 32 can be connected to the pipe body of the heat exchange assembly 30, and the heat exchange medium in the heat exchange assembly 30 can enter the joint 32 through the connecting portion 322. In addition, the heat exchange medium provided by an external structure can enter the heat exchange assembly 30 through the joint 32 and the connecting portion 322 thereof.

[0188] At least part of the connecting portion 322 abuts against the inner wall of the pipe body of the heat exchange assembly 30. That is, only part of the connecting portion 322 can abut against the inner wall of the pipe body of the heat exchange assembly 30, or the entire connecting portion 322 can abut against the inner wall of the pipe body of the heat exchange assembly 30. In the case where part of the connecting portion 322 abuts against the inner wall of the pipe body of the heat exchange assembly 30, the part of the connecting portion 322 can be a protruding structure, and the remaining part of the connecting portion 322 not in contact with the pipe body of the heat exchange assembly 30 is spaced apart from the inner wall of the pipe body of the heat exchange assembly 30.

[0189] At least part of the connecting portion 322 abuts against the inner wall of the pipe body of the heat exchange assembly 30, so as to seal the gap between the connecting portion 322 and the inner wall of the pipe body of the heat exchange assembly 30 through the part of the connecting portion 322 abutting against the inner wall of the pipe body of the heat exchange assembly 30, thereby reducing the risk of the heat exchange medium overflowing from the connecting portion 322.

[0190] Some structures of the joint 32 are provided in the embodiment, so that the joint 32 can be connected to the main pipeline 31, thereby enabling the heat exchange medium to enter or discharge from the heat exchange assembly 30 through the joint 32.

[0191] Reference Figure 6 In some embodiments, the connecting portion 322 is provided with a sealing portion 3221 around the circumference thereof. The sealing portion 3221 sealingly abuts against the pipe body of the heat exchange assembly 30. There is at least one sealing portion 3221.

[0192] The sealing part 3221 refers to the structure that protrudes from the connecting part 322 and abuts against the inner wall of the tube of the heat exchange assembly 30. The sealing part 3221 is arranged around the periphery of the connecting part 322, that is, the sealing part 3221 is a ring structure. Depending on the shape of the connecting part 322, the sealing part 3221 can be a circular ring structure, a square ring structure, or a ring structure of other shapes. The sealing part 3221 is connected to the periphery of the connecting part 322. The sealing part 3221 can be connected to the connecting part 322 by bonding, welding, or other means. The protrusion can also be integrally formed with the connecting part 322. The material of the sealing part 3221 can include metal, plastic, or other materials.

[0193] The sealing part 3221 surrounds the connecting part 322 and protrudes from the connecting part 322 to abut against the tube body of the heat exchange assembly 30, thereby sealing the gap between the connecting part 322 and the inner wall of the main pipeline 31.

[0194] The number of sealing parts 3221 is at least one, that is, the number of sealing parts 3221 can be one, two or more; when the number of sealing parts 3221 is at least two, the at least two sealing parts 3221 can be arranged at an axial interval along the connection part 322 so that the sealing parts 3221 can better seal the gap between the connection part 322 and the inner wall of the tube of the heat exchange assembly 30.

[0195] In this embodiment, the connecting part 322 includes a protruding sealing part 3221, which seals the gap between the connecting part 322 and the inner wall of the tube of the heat exchange assembly 30, thereby improving the sealing performance between the connecting part 322 and the heat exchange assembly 30 and reducing the risk of leakage.

[0196] refer to Figures 7 to 9 In some embodiments, the fastener 40 further includes a mounting portion 42 connected to the main body 41. The mounting portion 42 abuts against the inner surface of the housing 10 or against the outer surface of the housing. A second fixing hole 421 is provided on the mounting portion 42. The battery device 100 also includes a connector. One end of the connector passes through the second fixing hole 421 and is connected to the housing 10. The other end of the connector is pressed against the side of the mounting portion 42 away from the housing 10 to fix the mounting portion 42 to the housing 10.

[0197] The mounting portion 42 refers to a structure of the fixing member 40 for connecting with the box body 10. The mounting portion 42 can be directly connected to the box body 10, connected to the box body 10 through a connecting structure (such as a bolt, a rivet, etc.), or indirectly connected to the box body 10 through an intermediate structure. The mounting portion 42 can be a circular plate structure, a square plate structure, a circular truncated cone structure, a prismatic truncated cone structure, or other shapes. The number of the mounting portion 42 can be one, two, or more. The mounting portion 42 is connected to the main body portion 41 and can be connected to the main body portion 41 by welding, bonding, or other methods. The mounting portion 42 can also be integrally formed with the main body portion 41. The material of the mounting portion 42 can include metal, plastic, or other materials, and can be the same as that of the main body portion 41.

[0198] When the mounting portion 42 is connected to the box body 10, the mounting portion 42 can abut against the outer surface of the box body 10, which refers to the surface of the box body 10 facing away from the accommodation space 101. In this case, the mounting portion 42 is located outside the box body 10. The mounting portion 42 can also abut against the inner surface of the box body 10, which refers to the surface of the box body 10 facing toward the accommodation space 101. In this case, the mounting portion 42 is located inside the box body 10.

[0199] The second fixing hole 421 refers to a hole structure provided on the mounting portion 42. The second fixing hole 421 can be a circular hole, a square hole, or other shapes. The second fixing hole 421 can be a straight hole, a stepped hole, a tapered hole, or other shapes. One mounting portion 42 can have one second fixing hole 421, or two or more second fixing holes 421.

[0200] The connecting member refers to a structure of the battery device 100 for fixing the fixing member 40 to the box body 10. The connecting member can be a bolt, a rivet, or other structures. One end of the connecting member passes through the second fixing hole 421 and is connected to the box body 10. The end of the connecting member can be connected to the box body 10 by screwing, clamping, or other methods. The other end of the connecting member is crimped to the side of the mounting portion 42 away from the box body 10, so as to press the mounting portion 42 against the box body 10 and fix the fixing member 40 to the box body 10.

[0201] According to the relative position of the mounting portion 42 and the box body 10, the connecting member can press the mounting portion 42 against the outer surface of the box body 10, or press the mounting portion 42 against the inner surface of the box body 10.

[0202] For example, the connecting member can be a bolt. The shank of the bolt passes through the second fixing hole 421 and is threadedly connected to the box body 10. The head of the bolt is crimped to the side of the mounting portion 42 away from the box body 10, so as to fix the mounting portion 42 to the box body 10 and further fix the fixing member 40 to the box body 10.

[0203] In this embodiment, the fixing member 40 comprises the mounting portion 42, and the connecting member passes through the mounting portion 42 and is connected to the box body 10, so as to fix the fixing member 40 to the box body 10.

[0204] Reference Figures 7 to 9 In some embodiments, the second fixing hole 421 is provided with an insert 43, one end of the connecting member passes through the insert 43 and is connected to the box body 10, and the other end of the connecting member is crimped on the side of the insert 43 away from the box body 10.

[0205] The insert 43 refers to a structural member arranged in the second fixing hole 421. The insert 43 can be a cylindrical structural member or a prismatic structural member. The shape of the insert 43 can be arranged according to the shape of the second fixing hole 421. The insert 43 can be embedded in the second fixing hole 421 or fixed in the second fixing hole 421 by adhesion, bonding or other means. The material of the insert 43 can include metal, plastic or other materials.

[0206] In the case where the insert 43 is arranged in the second fixing hole 421, one end of the connecting member can pass through the insert 43 and be connected to the box body 10, and the other end of the connecting member can be held on the side of the insert 43 away from the box body 10, so as to hold the insert 43 on the box body 10, thereby holding and fixing the mounting portion 42 on the box body 10.

[0207] For example, the insert 43 is a structural member embedded in the second fixing hole 421 during the processing of the fixing member 40, so that the mounting portion 42 can stably wrap the insert 43, the insert 43 can be stably fixed in the second fixing hole 421, and the outer side wall of the insert 43 can be in close contact with the inner side wall of the second fixing hole 421.

[0208] In the case where the insert 43 is arranged in the second fixing hole 421 and the connecting member is crimped on the mounting portion 42, the connecting member can be directly held on the insert 43, and the mounting portion 42 is held and fixed on the box body 10. At the same time, the pressure of the connecting member directly acts on the insert 43, without directly acting on the mounting portion 42, thereby reducing the risk of damage to the mounting portion 42 by the connecting member during installation.

[0209] In this embodiment, the insert 43 is arranged in the second fixing hole 421, so that the connecting member is difficult to directly contact the mounting portion 42, thereby reducing the risk of damage to the mounting portion 42 by the connecting member during installation.

[0210] Reference Figure 4 、 Figures 10 to 13In some embodiments, the heat exchange assembly 30 further comprises a main pipe 31, at least two sub-pipes 33, and an adapter 34, one end of the main pipe 31 is connected with the joint 32; the sub-pipes 33 are used for heat exchange with the battery monomers 20, one end of the adapter 34 is connected to the main pipe 31, and the other end of the adapter 34 is connected to the at least two sub-pipes 33, so that the at least two sub-pipes 33 are in communication with the main pipe 31.

[0211] The main pipe 31 refers to a structure in the heat exchange assembly 30 for communication with other structures outside the box 10, and the heat exchange medium in the heat exchange assembly 30 can be gathered in the main pipe 31 and discharged to the other structures in communication outside through the main pipe 31, and the other structures in communication outside can also enter the main pipe 31 and flow to other parts through the main pipe 31 to realize heat exchange with each battery monomer 20.

[0212] The main pipe 31 can be a square pipe structure, a circular pipe structure, a trapezoidal pipe structure, or a pipe structure of other shapes; the main pipe 31 can be a straight pipe structure, or a curved pipe structure extending along a reference straight line; the material of the main pipe 31 can include metal, plastic, or other materials.

[0213] One end of the main pipe 31 is connected with the joint 32, so that the heat exchange medium in the main pipe 31 can flow to the other structures outside the box 10 in communication through the joint 32, and the other structures outside the box 10 can also provide the heat exchange medium to the main pipe 31 through the joint 32.

[0214] The sub-pipe 33 refers to a pipe structure in the heat exchange assembly 30 in communication with the main pipe 31, the sub-pipe 33 is in communication with the main pipe 31, and the sub-pipe 33 corresponds to each battery monomer 20 of the battery device 100, so that the heat exchange medium in the main pipe 31 can enter each sub-pipe 33 and exchange heat with the corresponding battery monomer 20; the sub-pipe 33 can be a cylindrical pipe structure, a plate structure, or a structure of other shapes; the number of sub-pipes 33 can be two, three, or more; the material of the sub-pipe 33 can include metal, plastic, or other materials.

[0215] The adapter 34 refers to a structural member in the battery device 100 for connecting the sub-pipe 33 and the main pipe 31, the adapter 34 can be a cylindrical pipe body, a prismatic pipe body, or a structural member of other shapes, the adapter 34 can be a variable-diameter adapter structure, a three-way adapter structure, a four-way adapter structure, or an adapter structure of other types; the material of the adapter 34 can include metal, plastic, or other materials.

[0216] One end of the adapter 34 is connected to the at least two sub-pipes 33, and the other end of the adapter 34 is connected to the main pipe 31. A channel for the heat exchange medium to flow through can be arranged in the adapter 34, so that the channel can be in communication with the at least two sub-pipes 33 and the main pipe 31, and thus the at least two sub-pipes 33 can be in communication with the main pipe 31. One end of the adapter 34 can be connected to the sub-pipe 33 by bonding, welding, clamping or other means, and the other end of the adapter 34 can be connected to the main pipe 31 by bonding, welding, clamping or other means.

[0217] The sub-pipes 33 correspond to the battery monomers 20, so that the heat exchange medium exchanges heat with the battery monomers 20, thereby achieving temperature control of the battery monomers 20. At this time, the main function of the main pipe 31 is to converge and distribute the heat exchange medium, that is, the heat exchange medium can enter each sub-pipe 33 from the main pipe 31, and the heat exchange medium in each sub-pipe 33 can also enter the main pipe 31 and be discharged to the external structure through the main pipe 31.

[0218] In this embodiment, the sub-pipes 33 are arranged so that the heat exchange assembly 30 can exchange heat with each battery monomer 20 through the sub-pipes 33, and the adapter 34 is arranged so that the sub-pipes 33 can be in communication with the main pipe 31 through the adapter 34, thereby enabling the heat exchange medium to be distributed and converged in the main pipe 31.

[0219] Reference Figures 10 to 13 In some embodiments, the sub-pipe 33 includes a plug-in end 331, and a clamping groove 3311 is formed on the outer circumferential side of the plug-in end 331. The adapter 34 includes an adapter body 341 and a sleeve portion 342 connected to the adapter body 341. The adapter body 341 is connected to the main pipe 31, and the sleeve portion 342 is sleeved on the plug-in end 331. The sleeve portion 342 protrudes a flange 3421 inwardly along its radial direction, and the flange 3421 can be clamped in the clamping groove 3311.

[0220] The plug-in end 331 refers to one end of the sub-pipe 33 connected to the adapter 34. The plug-in end 331 can be inserted into the adapter 34, so that the sub-pipe 33 can be connected to the adapter 34. According to the shape of the sub-pipe 33, the plug-in end 331 can be a cylindrical structure, a prismatic structure or other shapes. The sub-pipe 33 can include only one plug-in end 331, or two plug-in ends 331, which are respectively connected to two main pipes 31 and are respectively used for the heat exchange medium to enter and exit the sub-pipe 33.

[0221] The peripheral side of the plug-in end 331 is provided with a clamping groove 3311. The clamping groove 3311 can be arranged around the peripheral side of the plug-in end 331, or can be arranged only on a part of the peripheral side of the plug-in end 331. The cross-sectional shape of the clamping groove 3311 can be semicircular, square, trapezoidal or other shapes. The number of clamping grooves 3311 can be one, two or more.

[0222] For example, the number of clamping grooves 3311 is one, and the clamping grooves 3311 are arranged around the peripheral side of the plug-in end 331.

[0223] The adapter main body 341 refers to the main body part 41 of the adapter 34. The adapter main body 341 is used to provide a fixing base for other structures. The adapter main body 341 can be a prismatic structure, a cylindrical structure or other shaped structures. The adapter main body 341 can be provided with a channel for the flow of heat exchange medium. The adapter main body 341 is connected to the main pipeline 31. The adapter main body 341 can be directly connected to the main pipeline 31, or can be indirectly connected to the main pipeline 31 through an intermediate structure, so that the heat exchange medium in the adapter main body 341 can flow to the main pipeline 31, and the heat exchange medium in the main pipeline 31 can flow to the adapter main body 341. The adapter main body 341 can be connected to the main pipeline 31 by plug-in, clamping or other methods. The material of the adapter main body 341 can include metal, plastic or other materials.

[0224] The sleeve part 342 refers to the sleeve structure of the adapter 34 that communicates with the plug-in end 331 of the sub-pipeline 33. The sleeve part 342 can be a cylindrical sleeve structure or a prismatic sleeve structure. The sleeve part 342 is a cylindrical structure, i.e., the sleeve part 342 has a channel inside, so that the heat exchange medium in the sub-pipeline 33 can enter the sleeve part 342, and can pass through the sleeve part 342 and the adapter main body 341 to enter the main pipeline 31. The sleeve part 342 is connected to the adapter main body 341. The sleeve part 342 can be connected to the adapter main body 341 by adhesion, welding or other methods. The sleeve part 342 can also be integrally formed with the adapter main body 341. The number of sleeve parts 342 can be one, two or more. The number of sleeve parts 342 can also be set according to the number of sub-pipelines 33 corresponding to one adapter 34. The material of the sleeve part 342 can include metal, plastic or other materials. The material of the sleeve part 342 can be the same as or different from that of the adapter main body 341.

[0225] The flange 3421 refers to a structure protruding on the sleeve part 342, and the flange 3421 protrudes inward along the radial direction of the sleeve part 342. Since the sleeve part 342 is a cylindrical structure and has a channel inside, the flange 3421 is located on the inner wall of the sleeve part 342 towards the inside. The flange 3421 can be arranged around the channel inside the sleeve part 342, that is, the flange 3421 is an annular structure. The flange 3421 can also be arranged only on part of the inner wall of the sleeve part 342. The cross-sectional shape of the flange 3421 can be semicircular, square, trapezoidal or other shapes. The flange 3421 is arranged on the sleeve part 342. The flange 3421 can be connected to the sleeve part 342 by bonding, welding or other means. The flange 3421 can also be integrally formed with the sleeve part 342. The number of flanges 3421 can be one, two or more. The material of the flange 3421 can include metal, plastic or other materials.

[0226] For example, the number of flanges 3421 is one, and the flange 3421 is arranged around the inner wall of the sleeve part 342.

[0227] The plug-in end 331 can be inserted into the sleeve part 342 to enable the sub-pipeline 33 to communicate with the adapter 34. When the plug-in end 331 is inserted into the sleeve part 342, the flange 3421 can be inserted into and clamped in the clamping groove 3311 to fix the plug-in end 331 in the sleeve part 342.

[0228] It can be understood that during the process of inserting the plug-in end 331 into the sleeve part 342, since the flange 3421 can be inserted into the clamping groove 3311, and the clamping groove 3311 is arranged on the circumferential side of the plug-in end 331, therefore, before the flange 3421 corresponds to the clamping groove 3311 during the process of inserting the plug-in end 331 into the sleeve part 342, the plug-in end 331 can abut against the flange 3421 and make the flange 3421 deform along the radial direction of the plug-in end 331 to the direction away from the plug-in end 331. After the plug-in end 331 is inserted in place, the flange 3421 corresponds to the clamping groove 3311. At this time, the flange 3421 can recover and be inserted into the clamping groove 3311 to fix the plug-in end 331 in the sleeve part 342.

[0229] In this embodiment, the flange 3421 is arranged on the adapter 34, and the flange 3421 can be clamped in the clamping groove 3311 of the plug-in end 331 to fix the plug-in end 331 on the adapter 34 by the flange 3421, so as to facilitate the sub-pipeline 33 to communicate with the main pipeline 31.

[0230] Reference Figure 13 In some embodiments, a notch 3422 is arranged on the circumferential wall of the sleeve part 342 towards one end of the plug-in end 331.

[0231] The sleeve part 342 is provided with a notch 3422 on the circumferential side of the sleeve part 342, the notch 3422 is located at one end of the sleeve part 342 towards the plug-in end 331, the shape of the notch 3422 can be square, semicircular, triangular or other shapes; the number of notches 3422 can be one, two or more.

[0232] The notch 3422 is provided so that the flange 3421 and the part of the sleeve part 342 connected with the flange 3421 can be deformed; during the process of inserting the plug-in end 331 into the sleeve part 342, before the flange 3421 corresponds to the clamping groove 3311, the plug-in end 331 can abut against the flange 3421 and make the part of the sleeve part 342 connected with the flange 3421 deform along the radial direction of the plug-in end 331 away from the plug-in end 331; after the plug-in end 331 is inserted in place, the flange 3421 corresponds to the clamping groove 3311, at this time the part of the sleeve part 342 connected with the flange 3421 can recover, and the flange 3421 can be inserted into the clamping groove 3311 to fix the plug-in end 331 in the sleeve part 342.

[0233] In this embodiment, the notch 3422 is opened on the circumferential wall of the sleeve part 342, so that one end of the sleeve part 342 towards the plug-in end 331 can have a certain deformation ability, so as to facilitate the insertion of the plug-in end 331 of the sub-pipeline 33 into the sleeve part 342, and make the flange 3421 be able to be clamped in the clamping groove 3311.

[0234] Reference Figures 10 to 12 In some embodiments, the adapter 34 further comprises a third sealing member 35, which is arranged on the inner wall of the sleeve part 342 and surrounds the plug-in end 331, one side of the third sealing member 35 abuts against the sleeve part 342, and the other side of the third sealing member 35 abuts against the plug-in end 331.

[0235] The third sealing member 35 refers to a structure for sealing the gap between the plug-in end 331 and the inner wall of the sleeve part 342, the third sealing member 35 is arranged around the plug-in end 331, according to the shape of the plug-in end 331 and the sleeve part 342, the third sealing member 35 can be a circular ring structure, or a square ring structure or other shape structure; the number of third sealing members 35 can be one, two or more; the material of the third sealing member 35 can include metal, rubber, plastic or other materials.

[0236] The third sealing member 35 can be arranged on the plug-in end 331 or the inner wall of the sleeve part 342; the third sealing member 35 can be arranged on the plug-in end 331 or the inner wall of the sleeve part 342 by adhesion, screwing, clamping or other ways; for example, a ring-shaped groove structure is opened on the outer wall of the plug-in end 331, and a part of the third sealing member 35 is clamped in the groove structure.

[0237] One side of the third sealing member 35 abuts against the plug-in end 331, and the other side of the third sealing member 35 abuts against the inner wall of the sleeve portion 342, so as to seal the gap between the inner wall of the sleeve portion 342 and the outer wall of the plug-in end 331, reduce the risk of leakage of the heat exchange medium from the plug-in end 331, and improve the connection sealing performance between the sub-pipeline 33 and the adapter 34.

[0238] In this embodiment, the third sealing member 35 is arranged to seal the gap between the inner wall of the sleeve portion 342 and the outer wall of the plug-in end 331, so as to reduce the risk of leakage at the connection between the plug-in end 331 and the adapter 34.

[0239] Reference Figure 4 In some embodiments, the heat exchange assembly 30 includes a main pipeline 31 and a sub-pipeline 33 connected to the main pipeline 31, and the sub-pipeline 33 is used for heat exchange with the battery monomer 20; the main pipeline 31 is further provided with an exhaust valve 36, one end of the exhaust valve 36 is connected to the main pipeline 31, and the exhaust valve 36 is used for discharging the gas in the main pipeline 31 to the containing space 101.

[0240] The main pipeline 31 refers to a structure in the heat exchange assembly 30 for communication with other structures outside the box 10, and the heat exchange medium in the heat exchange assembly 30 can be gathered in the main pipeline 31 and discharged to the other structures connected outside through the main pipeline 31. The other structures connected outside can also enter the main pipeline 31 and flow to other parts through the main pipeline 31 to achieve heat exchange with each battery monomer 20.

[0241] The main pipeline 31 can be a square pipe structure, or a circular pipe structure, a trapezoidal pipe structure or other shaped pipe structure; the main pipeline 31 can be a straight pipe structure, or a curved pipe structure extending along the reference straight line; the material of the main pipeline 31 can include metal, plastic or other materials.

[0242] One end of the main pipeline 31 is connected to the connector 32, so that the heat exchange medium in the main pipeline 31 can flow to the other structures outside the box 10 connected through the connector 32, and the other structures outside the box 10 can also provide the heat exchange medium to the main pipeline 31 through the connector 32.

[0243] The sub-pipeline 33 refers to a pipeline structure in the heat exchange assembly 30 connected to the main pipeline 31, and the sub-pipeline 33 is connected to the main pipeline 31 and corresponds to each battery monomer 20 of the battery device 100, so that the heat exchange medium in the main pipeline 31 can enter each sub-pipeline 33 and exchange heat with the corresponding battery monomer 20; the sub-pipeline 33 can be a cylindrical pipe structure, or a plate structure or other shaped structure; the material of the sub-pipeline 33 can include metal, plastic or other materials.

[0244] The exhaust valve 36 refers to a device for discharging the gas in the main pipeline 31 in the heat exchange assembly 30. The exhaust valve 36 can include a trace exhaust valve 36, a composite exhaust valve 36 or other types of exhaust valve 36. One end of the exhaust valve 36 is connected to the main pipeline 31, so that the gas in the main pipeline 31 can be discharged to the outside of the main pipeline 31 through the exhaust valve 36. The exhaust valve 36 is connected to the main pipeline 31, which can be connected to the main pipeline 31 by bonding, welding or other means. The number of exhaust valves 36 can be one, two or more.

[0245] The heat exchange medium is a liquid medium.

[0246] The exhaust valve 36 can discharge the gas in the main pipeline 31, and when the liquid or solid heat exchange medium flows to the exhaust valve 36, the exhaust valve 36 will be closed, and the liquid or solid heat exchange medium will be difficult to flow to the outside of the main pipeline 31 through the exhaust valve 36.

[0247] When there is gas in the main pipeline 31, the liquid or solid heat exchange medium entering the main pipeline 31 can push the gas in the main pipeline 31 to the position of the exhaust valve 36 and discharge the gas in the main pipeline 31 through the exhaust valve 36.

[0248] When the heat exchange assembly 30 further includes a sub-pipeline 33, and the sub-pipeline 33 is connected to the main pipeline 31, the gas in the sub-pipeline 33 can also enter the main pipeline 31 and be discharged to the outside of the heat exchange assembly 30 through the exhaust valve 36.

[0249] The presence of gas in the main pipeline 31 can easily cause fluctuations in the pressure and flow in the main pipeline 31, and can easily cause the heat exchange efficiency of the heat exchange assembly 30 to decrease.

[0250] Therefore, in this embodiment, the exhaust valve 36 is provided to discharge the gas in the main pipeline 31 and the sub-pipeline 33, thereby reducing the negative impact of the gas on the uniformity of the heat exchange medium.

[0251] Reference Figure 4 In some embodiments, the exhaust valve 36 and the joint 32 are respectively located at both ends of the main pipeline 31.

[0252] The exhaust valve 36 and the joint 32 are respectively located at both ends of the main pipeline 31, and the exhaust valve 36 is located at the end of the main pipeline 31, so that the gas in the main pipeline 31 can flow to one end of the main pipeline 31 and be discharged to the outside of the main pipeline 31 through the exhaust valve 36, and the risk of gas remaining in the main pipeline 31 can be reduced.

[0253] In the case that the joint 32 is used for the heat exchange medium to enter the main pipe 31, the heat exchange medium enters the main pipe 31 from the joint 32 and gradually flows to the other end of the main pipe 31 where the exhaust valve 36 is located. During the flow of the heat exchange medium, the heat exchange medium can gradually push the gas in the main pipe 31 to the end of the main pipe 31 where the exhaust valve 36 is located, so that the gas in the main pipe 31 can be more thoroughly exhausted from the exhaust valve 36 to the outside of the main pipe 31, and the risk of gas remaining in the main pipe 31 can be reduced.

[0254] In this embodiment, the heat exchange medium can enter the main pipe 31 through the joint 32 and gradually flow to the exhaust valve 36 and fill the main pipe 31. During this process, other gases in the main pipe 31 can be pushed by the heat exchange medium to the exhaust valve 36 and exhausted, thereby reducing the risk of gas remaining in the main pipe 31.

[0255] Reference Figure 3 , Figure 4 In some embodiments, the exhaust valve 36 is located at the highest point of the main pipe 31 along the direction of gravity.

[0256] The exhaust valve 36 is located at the highest point of the main pipe 31 along the direction of gravity. Because the density of the gas is generally small, locating the exhaust valve 36 at the highest point of the main pipe 31 along the direction of gravity enables the gas in the main pipe 31 to be more thoroughly exhausted from the exhaust valve 36 to the outside of the main pipe 31, and reduces the risk of gas remaining in the main pipe 31.

[0257] In the case that the main pipe 31 is a straight structure, the length direction of the main pipe 31 can be parallel to the length direction X or the width direction Y of the battery device 100. In this case, the part where the exhaust valve 36 communicates with the main pipe 31 is located on the upper side of the main pipe 31 along the height direction Z of the battery device 100, so that the gas can better enter the exhaust valve 36.

[0258] In the case that the main pipe 31 is a curved structure, the exhaust valve 36 can be located at the highest point of the main pipe 31 along the height direction Z of the battery device 100.

[0259] For example, the main pipe 31 is an S-shaped structure and is located on both sides of the battery monomer 20 along the length direction X of the battery device 100. In this case, the exhaust valve 36 is located at the uppermost end of the main pipe 31 along the height direction Z of the battery device 100.

[0260] In this embodiment, because the density of the gas is small, the exhaust valve 36 is arranged at the high point of the main pipe 31 along the direction of gravity, so that more gas in the main pipe 31 can flow to the exhaust valve 36 and be exhausted, thereby further reducing the risk of gas remaining in the main pipe 31.

[0261] In some embodiments, the battery device 100 comprises a box 10, battery cells 20, a heat exchange assembly 30 in which a liquid heat exchange medium can flow, and a fixing member 40.

[0262] The box 10 has a containing space 101 in which the battery cells 20 are contained.

[0263] The heat exchange assembly 30 comprises main pipes 31, which are arranged on both sides of the battery cells 20 along the length direction X of the battery device 100, one of the two main pipes 31 is used for the entry of an external heat exchange medium, and the other end of the two main pipes 31 is used for the discharge of the heat exchange medium out of the box 10; the heat exchange assembly 30 further comprises sub-pipes 33 connected with the main pipes 31, and the two ends of the sub-pipes 33 are connected with the two main pipes 31, respectively.

[0264] One end of the main pipe 31 is inserted with a connector 32, and the connector 32 is provided with a connecting portion 322 which is inserted into the main pipe 31; the connecting portion 322 is provided with a sealing portion 3221 on the side thereof, and the sealing portion 3221 abuts against the inner side wall of the main pipe 31.

[0265] The box 10 is provided with the fixing member 40, and the fixing member 40 has a main body portion 41 which penetrates the side wall of the box 10, and the main body portion 41 is provided with a first fixing hole 411 in which one end of the connector 32 is inserted so as to be connected with other structures outside the box 10.

[0266] The main body portion 41 is provided with a first clamping hole 4121 which penetrates the main body portion 41, and the inner wall of the first fixing hole 411 is further provided with a second clamping hole 4122.

[0267] The connector 32 is connected with a first arm 3211, one end of the first arm 3211 is connected with the connector 32, and the other end of the first arm 3211 is connected with a clamping portion 3212, and one end of the first arm 3211 connected with the clamping portion 3212 is spaced apart from the connector 32; in the case that the connector 32 is fixed to the main body portion 41, the clamping portion 3212 is inserted into the first clamping hole 4121; the length direction of the first arm 3211 is parallel to the axial direction of the first fixing hole 411.

[0268] The connector 32 is further connected with a second arm 3213, one end of the second arm 3213 is connected with the connector 32, and the other end of the second arm 3213 is spaced apart from the connector 32; in the case that the connector 32 is fixed to the main body portion 41, the other end of the second arm 3213 is inserted into the second clamping hole 4122; the length direction of the second arm 3213 is tangent to the circumferential direction of the connector 32.

[0269] The fixing member 40 further comprises a mounting portion 42 connected to the main body portion 41, the mounting portion 42 is provided with a second fixing hole 421, and the second fixing hole 421 is inlaid with the insert 43; the battery device 100 further comprises a connecting member, one end of the connecting member penetrates through the insert 43 and is connected to the box body 10, and the other end of the connecting member abuts against the surface of the insert 43 away from the box body 10.

[0270] One end of the main pipe 31 is connected with an exhaust valve 36.

[0271] The sub-pipe 33 is connected with the main pipe 31 through the adapter 34, the adapter 34 comprises an adapter main body 341 connected with the main pipe 31, the adapter main body 341 is connected with a sleeve portion 342, and the adapter main body 341 is connected with the sleeve portion 342; one end of the sleeve portion 342 away from the adapter main body 341 is provided with a flange 3421 on the side wall inside the sleeve portion 342, and the one end of the sleeve portion 342 away from the adapter main body 341 is provided with a notch 3422.

[0272] The sub-pipe 33 has a plug-in end 331 plugged into the sleeve portion 342, and the plug-in end 331 is provided with an annular clamping groove 3311 on the circumference; in the case that the plug-in end 331 is plugged into the sleeve portion 342, the flange 3421 is clamped into the clamping groove 3311.

[0273] In the second aspect, the embodiments of the present application further provide a power utilization device comprising the battery device 100 provided by some embodiments of the first aspect.

[0274] In the power utilization device, the joint 32 of the main pipe 31 of the heat exchange assembly 30 and the fixing member 40 are independent structures, the fixing member 40 can be adapted to different specifications of the joint 32, in the case that the specifications of the joint 32 are different, the setting can reduce the difficulty of fixing and installing the joint 32, and it is not necessary to adaptively adjust the box body 10, the main pipe 31 or other structures for different joints 32, thereby reducing the processing difficulty, reducing the processing cost, and improving the processing efficiency.

[0275] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a box body having a containing space, wherein the box body is provided with a mounting hole which is communicated with the containing space; a battery cell contained in the box body; a heat exchange assembly contained in the box body, the heat exchange assembly being used for heat exchange with the battery cell, and the heat exchange assembly comprising a joint; a fixing member connected to the box body, wherein the fixing member comprises a main body part, at least a part of the main body part is arranged through the mounting hole, and a first fixing hole is arranged through the main body part; one end of the joint extends into the first fixing hole, and the joint is detachably connected with the main body part.

2. The battery device according to claim 1, characterized by The main body part is provided with a first clamping structure, the joint is provided with a second clamping structure, the second clamping structure can be clamped on the first clamping structure, so that the joint can be fixed on the fixing member.

3. The battery device of claim 2, wherein The first clamping structure comprises a first clamping hole arranged on the main body part. The second clamping structure comprises a first arm, one end of the first arm is connected to the joint, and the other end of the first arm is connected with a clamping part which can extend into the first clamping hole and be clamped in the first clamping hole.

4. The battery device of claim 3, wherein The first arm is arranged in a spaced manner between the one end of the first arm provided with the clamping part and the joint, so that the clamping part can move away from the fixing member and exit the first clamping hole.

5. The battery device of claim 3, wherein In the case that the clamping part is clamped in the first clamping hole, at least a part of the first arm is located in the first fixing hole.

6. The battery device of claim 3, wherein The length direction of the first arm is parallel to the axial direction of the first fixing hole, and the clamping part is located at one end of the length direction of the first arm.

7. The battery device according to any one of claims 2 to 6, wherein The first clamping structure further comprises a second clamping hole arranged on the main body part, and the opening of the second clamping hole faces the joint. The second clamping structure further comprises a second arm arranged on the joint, one end of the second arm is connected to the joint, and the other end of the second arm extends into the second clamping hole and is inserted into the second clamping hole.

8. The battery device of claim 7, wherein, The one end of the second arm away from the joint is arranged in a spaced manner from the joint, so that the one end of the second arm away from the joint can move towards the joint and exit the second clamping hole.

9. The battery device of claim 7, wherein, The length direction of the second arm is arranged at an angle with the axial direction of the first fixing hole, and the second arm is inserted into the second clamping hole along one end of the length direction of the second arm.

10. The battery device according to any one of claims 1 to 6, wherein The main body part is provided with a first sealing member, the first sealing member is arranged around the main body part, one side of the first sealing member abuts against the main body part, and the other side of the first sealing member abuts against the inner wall of the mounting hole.

11. The battery device of any one of claims 1-6, wherein, The main body part is provided with a second sealing member, the second sealing member is arranged around the joint, one side of the second sealing member abuts against the inner wall of the first fixing hole, and the other side of the second sealing member abuts against the joint.

12. The battery device of any one of claims 1-6, wherein, The joint comprises a connecting part which is inserted into the pipe body of the heat exchange assembly; At least a part of the connecting part abuts against the inner wall of the pipe body of the heat exchange assembly.

13. The battery device of claim 12, wherein, The connecting part is provided with a sealing part around the circumference of the connecting part, and the sealing part sealingly abuts against the inner wall of the pipe body of the heat exchange assembly; The sealing part has at least one.

14. The battery device of any one of claims 1-6, wherein, The fixing member further comprises a mounting portion connected to the main body portion, the mounting portion abutting against an inner surface of the box or an outer surface of the box, and a second fixing hole is formed in the mounting portion; The battery device further comprises a connecting member, one end of the connecting member penetrating through the second fixing hole and being connected to the box, and the other end of the connecting member being crimped to a side of the mounting portion away from the box, so as to fix the mounting portion to the box.

15. The battery device of claim 14, wherein, An insert is arranged in the second fixing hole, one end of the connecting member penetrating through the insert and being connected to the box, and the other end of the connecting member being crimped to a side of the insert away from the box.

16. The battery device of any one of claims 1-6, wherein, The heat exchange assembly comprises a main pipeline, at least two sub-pipelines, and an adapter, one end of the main pipeline being connected to the joint; The sub-pipeline is used for heat exchange with the battery monomer, one end of the adapter being connected to the main pipeline, and the other end of the adapter being connected to at least two sub-pipelines, so as to make the at least two sub-pipelines communicate with the main pipeline.

17. The battery device of claim 16, wherein, The sub-pipeline comprises a plug-in end, and a clamping groove is formed in the outer circumferential side of the plug-in end; The adapter comprises an adapter main body and a sleeve portion connected to the adapter main body, the adapter main body being connected to the main pipeline, the sleeve portion being sleeved on the plug-in end, and a flange being protruded inward along the radial direction of the sleeve portion, and the flange being capable of being clamped to the clamping groove.

18. The battery device of claim 17, wherein, A notch is formed in the circumferential wall of the sleeve portion and directed to one end of the plug-in end.

19. The battery device of claim 17, wherein, The adapter further comprises a third sealing member, the third sealing member being arranged on the inner wall of the sleeve portion and surrounding the plug-in end, one side of the third sealing member abutting against the sleeve portion, and the other side of the third sealing member abutting against the plug-in end.

20. The battery device of any one of claims 1-6, wherein, The heat exchange assembly comprises a main pipeline and a sub-pipeline communicating with the main pipeline, and the sub-pipeline is used for heat exchange with the battery monomer; The main pipeline is provided with an exhaust valve, one end of the exhaust valve communicating with the main pipeline, and the exhaust valve being used for exhausting gas in the main pipeline to the accommodation space.

21. The battery device of claim 20, wherein, The exhaust valve and the joint are respectively located at two ends of the main pipeline.

22. The battery device of claim 20, wherein, The exhaust valve is located at the highest position of the main pipeline along the direction of gravity.

23. An electrical device, comprising: The battery device comprises the heat exchange assembly. The battery device comprises the heat exchange assembly.

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