Battery device and electric device

Abstract

The invention relates to a battery device and a power utilization device. The battery device comprises a box body, a heat exchange plate, a joint assembly and a supporting plate, the box body comprises a box body frame, and a containing cavity is defined by the box body frame; the heat exchange plate comprises a first section and a second section which are connected, the first section is located in the containing cavity, and the second section is located outside the containing cavity and protrudes relative to the box body frame; the connector assembly is arranged outside the containing cavity, connected with the box frame and communicated with the second section. The supporting plate is arranged on the frame of the box body and bears the heat exchange plate, and the orthographic projection range of the second section falls in the supporting plate in the thickness direction of the supporting plate. When the battery device runs, fluid can be directly shunted to an external pipeline system through the connector part. Due to the fact that the second section of the heat exchange plate is located outside the containing cavity of the box body, and the connector assembly is directly installed on the second section, installation between the connector assembly and the heat exchange plate can be achieved outside the box body, and the installation difficulty of the connector assembly is reduced.

Description

Technical Field

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

[0002] Battery devices are prone to overheating, overcooling and other problems during use, which in turn affects the performance, life and even safety of the battery device. In order to maintain the temperature inside the battery device within a normal range, the battery thermal management system is generally used to timely adjust the temperature of the battery device to maintain the temperature driven by the battery within the optimal operating temperature range. For example, corresponding pipelines are set inside the box of the battery device, and the power unit is used to push the working fluid (such as air, water or other liquids) to circulate in the pipeline to reduce or increase the battery temperature through heat exchange.

[0003] The heat exchange plate is a commonly used component in the battery thermal management system. However, the heat exchange plate is prone to airtight failure due to assembly reasons during use, thereby affecting the performance of the battery device. Summary of the invention

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can improve the problem of poor airtightness of the heat exchange plate.

[0005] In a first aspect, the present application provides a battery device, which includes a box, a heat exchange plate and a joint assembly. The box includes a box frame, which encloses a receiving cavity; the heat exchange plate includes a first section and a second section connected to each other, the first section is located in the receiving cavity, and the second section is located outside the receiving cavity and protrudes relative to the box frame; the joint assembly is located outside the receiving cavity and connected to the box frame, and the second section of the joint assembly is connected.

[0006] In the technical solution of the embodiment of the present application, during the use of the battery device, the fluid can flow directly to the external pipeline system through the joint part. Because the second section of the heat exchange plate is located outside the accommodating cavity of the box body, and the joint assembly is directly installed on the second section, the joint assembly and the heat exchange plate can be installed outside the box body, reducing the difficulty of installing the joint assembly.

[0007] In some embodiments, the joint assembly includes a connecting portion and a joint portion, the connecting portion is connected to the box frame, and the joint portion is protruding relative to the connecting portion and is in communication with the second section.

[0008] Because the joint part and the connecting part are two parts directly divided from the joint assembly, when the fluid flows through the joint part, it will not directly overflow from the connection between the joint part and the connecting part. When the battery device is running, the gas generated inside it will not directly overflow through the connection between the joint part and the connecting part, thereby improving the sealing effect after the joint assembly is assembled. In addition, the joint part is protruding relative to the connecting part, thereby improving the installation stability of the plug of the joint part for installing the pipeline system.

[0009] In some embodiments, the connecting part includes a first connecting part and a second connecting part, the first connecting part is bent relative to the second connecting part, the first connecting part is connected to the box frame, the second connecting part is connected to the second section, the second connecting part is provided with a boss, the boss extends to the connection between the first connecting part and the second connecting part, and the boss is provided with a joint part.

[0010] Because the plug of the pipeline system itself has a certain length, a boss with a certain thickness is provided, and a joint part is provided on the boss, so that the plug can be located in the joint part as much as possible, thereby improving the connection stability between the two.

[0011] In some embodiments, along the thickness direction of the support plate, the orthographic projection range of the second segment falls within the orthographic projection range of the second connecting portion.

[0012] After the heat exchange plate is installed, the second section thereof is clamped between the support plate and the second connecting portion of the joint assembly, thereby improving the sealing effect between the three.

[0013] In some embodiments, the battery device further includes a locking member, the support plate is provided with a first opening, the second connecting portion is provided with a second opening, and the locking member passes through the first opening and the second opening to connect the support plate and the second connecting portion together.

[0014] When installing the joint assembly, one end of the locking member can be passed through the first opening 61 and the second opening to connect the support plate and the second connecting portion, thereby simplifying the connection between the two.

[0015] In some embodiments, the second connecting portion is provided with a groove, and a second opening is formed on a bottom wall of the groove.

[0016] In order to reduce the difficulty of riveting, a groove can be opened on the second connecting part, and then a second opening can be opened on the groove to reduce the thickness of the part where the second opening is located, thereby reducing the difficulty of opening the second opening and further reducing the difficulty of assembling the locking member.

[0017] In some embodiments, a through hole is provided on the boss along the thickness direction of the support plate and passes through the boss, and the through hole is configured as a joint portion.

[0018] By opening a through hole on the boss and configuring it as a joint part, most of the plug can be located in the through hole, thereby increasing the stability of the plug after insertion. In addition, the structure of the joint part is simplified, the difficulty of preparing the joint part is reduced, and it is more convenient to assemble the plug of the pipeline system.

[0019] In some embodiments, the joint portion includes a water inlet end and a water outlet end, the boss is provided with at least two through holes, at least one through hole among all the through holes is configured as the water inlet end, and at least one through hole is configured as the water outlet end.

[0020] When any through hole configured as the water inlet or the water outlet is blocked, the plug of the pipeline system can be inserted into the unblocked through hole, thereby expanding the use flexibility of the joint part.

[0021] In some embodiments, the battery device further includes a fastener, and the boss is provided with a third opening extending through the boss in a thickness direction thereof, the third opening being located around the through hole and allowing the fastener to pass through to connect with the second section.

[0022] When installing the joint assembly, one end of the fastener can be passed through the third opening and connected to the second section to improve the connection effect between the boss and the second section, thereby connecting different parts of the joint assembly to the second section, improving the connection effect between the joint assembly and the second section and the sealing efficiency of the joint assembly.

[0023] In some embodiments, the joint assembly further includes a first welding area formed between a surface of the first connection portion facing the box frame and the box frame, and a surface of the second connection portion facing the second segment and the second segment.

[0024] In this way, the surface of the joint assembly in contact with the box frame and the heat exchange plate can be welded to the corresponding box frame or heat exchange plate as much as possible, thereby improving the sealing of the joint assembly after installation.

[0025] In some embodiments, the joint assembly further includes a second welding area, and the second welding area is formed between the edge of the first connecting portion and the box frame; the second welding area is also formed between the second connecting portion and the edge of the second segment.

[0026] In this way, by welding the second welding area where the edge of the joint assembly is located, that is, welding the periphery of the joint assembly, secondary sealing can be performed when the joint assembly is installed, thereby further improving the sealing performance of the joint assembly after installation.

[0027] In some embodiments, the joint assembly and the heat exchange plate are prepared by arc welding in the second welding area, and the joint assembly and the box frame are also prepared by arc welding in the second welding area.

[0028] Arc welding itself has the effect of not easily generating defects such as pores and slag inclusions during the welding process, and the arc welding has a fast welding speed, which can improve the welding speed and welding quality when welding joint components.

[0029] In some embodiments, the battery device further includes a blocking member, which is detachably mounted on the joint portion to block or expose the joint portion.

[0030] In this way, when the joint assembly is in an idle state, the sealing piece can be used to seal the passage between the joint part and the outside world, thereby blocking foreign matter from the outside world and reducing the probability of foreign matter entering the joint assembly through the joint part, thereby blocking the joint part and affecting the normal operation of the joint assembly.

[0031] In some embodiments, the connecting portion and the joint portion are prepared by an integral molding process or a forging process.

[0032] Processing the connection part and the joint part by the above-mentioned process can improve the performance of the obtained product.

[0033] In a second aspect, the present application provides an electrical device, which includes the battery device in the above embodiment.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0036] Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0037] Figure 2 is an exploded view of a battery device according to one or more embodiments.

[0038] Figure 3 It is a schematic diagram of the exploded structure of a battery cell according to one or more embodiments.

[0039] Figure 4 It is a schematic structural diagram of a battery device according to one or more embodiments with part of the structure omitted.

[0040] Figure 5 for Figure 4 Enlarged view of the location of the middle joint assembly.

[0041] Figure 6 for Figure 5 Schematic diagram of the structure in which the middle joint assembly is separated from the heat exchange plate.

[0042] Figure 7 for Figure 5 The structural schematic diagram of the joint assembly is hidden in the figure.

[0043] Figure 8 Schematic diagram of the structure of a joint assembly according to one or more embodiments.

[0044] The reference numerals in the specific implementation manner are as follows:

[0045] 1000. Vehicles;

[0046] 100, battery device; 200, controller; 300, motor;

[0047] 10. Box body; 11. First part; 12. Second part; 13. Box body frame;

[0048] 20. Battery cell; 21. End cover; 21a. Electrode terminal; 22. Shell; 23. Battery cell assembly;

[0049] 30. heat exchange plate; 31. first section; 32. second section;

[0050] 40. Joint assembly; 41. Connecting portion; 411. Boss; 4111. Third opening; 412. First connecting portion; 413. Second connecting portion; 4131. Groove; 4132. Second opening; 42. Joint portion; 43. Second welding area; 44. Sealing member; 50. Locking member; 60. Support plate; 61. First opening. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0053] In the description of the embodiments of the present application, if technical terms such as "first" and "second" appear, they 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] In the description of the embodiments of the present application, if the term "and / or" appears, it is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, if it appears, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] In the description of the embodiments of the present application, if it appears, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0057] In the description of the embodiments of the present application, if any, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if any technical terms such as "installed", "connected", "connected", "fixed" and the like are to be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0060] In order to achieve heat exchange between the working fluid and the battery, a water cooling plate can be set on the battery box. A flow channel is formed in the water cooling plate for the working fluid to flow, thereby achieving heat transfer between the working fluid and the battery, and achieving the purpose of controlling the battery temperature. The coolant in the water cooling plate needs to be connected to the outside through a pipe joint, and circulate under the drive of the power unit to achieve continuous heat exchange. When installing, the pipe joint is generally welded to the box frame of the box, but due to the structure of the pipe joint itself and the welding process, the sealing between the pipe joint and the box frame cannot be ensured, and airtight failure is prone to occur.

[0061] Based on the above considerations, in order to improve the problem of easy failure of airtightness at pipe joints, some embodiments of the present application provide a battery device, wherein the joint assembly includes a connecting part and a joint part in an integrated structure, and the connecting part and the joint part do not need to be connected by welding or the like, thereby reducing the probability of failure of the joint part.

[0062] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, electrical devices such as vehicles, ships, or aircraft.

[0063] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, an energy storage product, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the energy storage product may include an energy storage station, etc.

[0064] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0065] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0066] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0067] Please refer to Figure 2 , Figure 2 An exploded view of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include a first part 11 and a second part 12, and the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The second part 12 may be a hollow structure with one end open, and the first part 11 may be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 may also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box body 10 formed by the first part 11 and the second part 12 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0068] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0069] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0070] Please refer to Figure 3 , Figure 3 The schematic diagram of the exploded structure of the battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes the battery. Figure 3 The battery cell 20 includes an end cover 21, a shell 22, a battery cell assembly 23 and other functional components.

[0071] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. It is possible that the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easy to deform when it is squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 21a can be provided on the end cap 21. The electrode terminal 21a can be used to electrically connect with the battery cell assembly 23 to output or input the electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0072] The shell 22 is a component used to cooperate with the end cover 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the battery cell assembly 23, electrolyte and other components. The shell 22 and the end cover 21 can be independent components, and an opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cover 21 at the opening. Without limitation, the end cover 21 and the shell 22 can also be integrated. Specifically, the end cover 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when the interior of the shell 22 needs to be encapsulated, the end cover 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the battery cell assembly 23. The material of the shell 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0073] The battery cell assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more battery cell assemblies 23 may be contained in the housing 22. The battery cell assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the battery cell assembly 23, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear. The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.

[0074] See also Figures 4 to 6 Some embodiments of the present application provide a battery device 100, which includes a box body 10, a heat exchange plate 30 and a joint assembly 40. The box body 10 includes a box body frame 13, which encloses a receiving cavity; the heat exchange plate 30 includes a first section 31 and a second section 32 connected to each other, the first section 31 is located in the receiving cavity, and the second section 32 is located outside the receiving cavity and protrudes relative to the box body frame 13; the joint assembly 40 is arranged outside the receiving cavity and connected to the box body frame 13, and the joint assembly 40 is connected to the second section 32.

[0075] The box frame 13 may be a frame-shaped structure formed by the side wall of the box 10, and may define a receiving cavity including an opening, and the receiving cavity may be used to receive the battery cell 20. Both ends of the receiving cavity are open and connected, and the heat exchange plate 30 may be located at one end of the receiving cavity, thereby blocking the opening at one end of the receiving cavity. The second section 32 of the heat exchange plate 30 is used to carry the joint assembly 40. The connection between the heat exchange plate 30 and the box frame 13 is, but not limited to, a threaded connection or a clamping connection.

[0076] The joint assembly 40 can be located outside the accommodating cavity and connected to the outer side wall of the box frame 13. There is no gap between the connecting portion 41 and the joint portion 42, and both are made of the same material. The connecting portion 41 is used to connect to the box frame 13, that is, when installing the joint assembly 40, as long as the connecting portion 41 is installed in a preset position (such as the box frame 13), the assembly of the entire joint assembly 40 can be achieved. The joint portion 42 is used to connect the heat exchange plate 30 and the external piping system (such as the thermal management system of the vehicle 1000). The fluid in the heat exchange plate 30 can enter the external piping system through the joint portion 42 for heat exchange, and then flow back to the heat exchange plate 30 through the joint portion 42.

[0077] During the use of the battery device 100, the fluid can flow directly to the external pipeline system through the joint portion 42. Because the second section 32 of the heat exchange plate 30 is located outside the accommodating cavity of the box body 10, and the joint assembly 40 is directly mounted on the second section 32, the joint assembly 40 and the heat exchange plate 30 can be installed outside the box body 10, reducing the difficulty of installing the joint assembly 40.

[0078] like Figure 7 As shown, in some embodiments, the battery device 100 includes a support plate 60, which is disposed on the box frame 13, and the support plate 60 carries the heat exchange plate 30. Along the thickness direction of the support plate 60, the orthographic projection range of the second section 32 falls within the support plate 60.

[0079] The support plate 60 and the box frame 13 may be connected by, but not limited to, threaded connection, and the support plate 60 is mainly used to support the heat exchange plate 30. When the heat exchange plate 30 and the box frame 13 become loose, the normal operation of the heat exchange plate 30 will not be affected because the support plate 60 and the box frame 13 are still connected together and the support plate 60 still supports the heat exchange plate 30. In addition, the orthographic projection of the second section 32 also falls within the support plate 60, so the second section 32 can be supported, thereby improving the installation stability of the second section 32.

[0080] like Figure 8 As shown, in some embodiments, the joint assembly 40 includes a connecting portion 41 and a joint portion 42 , the connecting portion 41 is connected to the box frame 13 , and the joint portion 42 is protruded relative to the connecting portion 41 and communicated with the second section 32 .

[0081] The connection part 41 and the joint part 42 can be prepared by an integrated molding process to improve the connection strength between the connection part 41 and the joint part 42 and simplify the processing method between the two. Because the joint part 42 and the connection part 41 are two parts directly divided from the joint assembly 40, when the fluid flows through the joint part 42, it will not directly overflow from the connection between the joint part 42 and the connection part 41. When the battery device 100 is running, the gas generated inside it will not directly overflow through the connection between the joint part 42 and the connection part 41, thereby improving the sealing effect of the joint assembly 40 after assembly. In addition, the joint part 42 is arranged to protrude relative to the connection part 41, thereby improving the installation stability of the plug of the joint part 42 for installing the pipeline system.

[0082] Please continue reading Figure 8 In some embodiments, the connecting portion 41 includes a first connecting portion 412 and a second connecting portion 413. The first connecting portion 412 is bent relative to the second connecting portion 413. The first connecting portion 412 is connected to the box frame 13, and the second connecting portion 413 is connected to the second section 32. The second connecting portion 413 is provided with a boss 411, which extends to the connection between the first connecting portion 412 and the second connecting portion 413, and the boss 411 is provided with a joint portion 42.

[0083] The first connection part 412 and the second connection part 413 can be roughly formed into an L shape, and a boss 411 is protruded in the middle of the two parts, and the protrusion direction of the boss 411 is consistent with the thickness direction of the support plate 60. The thickness of the first connection part 412 and the second connection part 413 is equal and smaller than the thick bottom of the boss 411.

[0084] When the joint assembly 40 is assembled with the heat exchange plate 30, the plug of the external pipeline system is inserted into the joint part 42 on the boss 411, so that the heat exchange plate 30 and the pipeline system can be connected, and the fluid in the heat exchange plate 30 can flow to the pipeline system. The first connecting part 412 and the second connecting part 413, which are relatively thin, are used to connect the box frame 13 and the heat exchange plate 30 respectively, in order to reduce the difficulty of welding. Because the plug of the pipeline system itself has a certain length, a boss 411 with a certain thickness is provided, and the joint part 42 is provided on the boss 411, so that the plug can be located in the joint part 42 as much as possible, thereby improving the connection stability between the two.

[0085] like Figure 6 As shown, in some embodiments, along the thickness direction of the support plate 60 , the orthographic projection range of the second segment 32 falls within the orthographic projection range of the second connecting portion 413 .

[0086] After the heat exchange plate 30 is installed, the second section 32 thereof is clamped between the support plate 60 and the second connecting portion 413 of the joint assembly 40 , thereby improving the sealing effect between the three.

[0087] Specifically, Figure 6 and Figure 7 As shown, in some embodiments, the battery device 100 further includes a locking member 50, a first opening 61 is formed on the support plate 60, a second opening 4132 is formed on the second connection portion 413, and the locking member 50 penetrates the first opening 61 and the second opening 4132 to connect the support plate 60 and the second connection portion 413 together.

[0088] The support plate 60 may be provided with a plurality of first openings 61. The locking member 50 may be, but is not limited to, a screw or other component. When installing the joint assembly 40, one end of the locking member 50 may be passed through the first opening 61 and the second opening 4132 to connect the support plate 60 and the second connecting portion 413, thereby simplifying the connection between the two.

[0089] Specifically, Figure 8 As shown, in some embodiments, the second connecting portion 413 is provided with a groove 4131 , and a second opening 4132 is formed on the bottom wall of the groove 4131 .

[0090] For example, along the thickness direction of the heat exchange plate 30, the second connection portion 413 is away from the surface of the heat exchange plate 30, and a part of the area is recessed inward to form a groove 4131. The shape of the groove 4131 can be but is not limited to: Figure 6 In the U-shaped shown embodiment, the bottom wall of the groove 4131 is provided with a second opening 4132 extending therethrough.

[0091] In the actual assembly process, the second connection part 413 itself is relatively thick, and riveting can be used between the locking member 50 and the second opening 4132. In order to reduce the difficulty of riveting, a groove 4131 can be opened on the second connection part 413, and then a second opening 4132 can be opened on the groove 4131 to reduce the thickness of the part where the second opening 4132 is located, thereby reducing the difficulty of opening the second opening 4132, and further reducing the difficulty of assembling the locking member 50.

[0092] In some embodiments, along the thickness direction of the support plate 60 , the boss 411 is provided with a through hole penetrating therethrough, and the through hole is configured as a joint portion 42 .

[0093] The through hole is formed on the boss 411 to form the connector part 42, so that most of the plug is located in the through hole, thereby increasing the stability of the plug after insertion. In addition, the structure of the connector part 42 is simplified, the difficulty of preparing the connector part 42 is reduced, and it is more convenient to assemble the plug of the pipeline system.

[0094] Specifically, in some embodiments, the joint portion 42 includes a water inlet end and a water outlet end, the boss 411 is provided with at least two through holes, at least one through hole among all the through holes is configured as a water inlet end, and at least one through hole is configured as a water outlet end.

[0095] like Figure 8 As shown, in one example, two through holes are provided on the boss 411, one of which is configured as a water inlet, and the other is configured as a water outlet. The water inlet and the water outlet are respectively connected to the water outlet plug and the water inlet plug of the pipeline system, and the pipeline and the pipeline system in the heat exchange plate 30 form a loop for the circulation of the fluid in the heat exchange plate 30.

[0096] In another example, three through holes are formed on the boss 411, one of which is configured as a water inlet, and the remaining two are configured as water outlets. The water inlet is connected to a water outlet plug of the pipeline system, and the water outlet is connected to a water inlet of the pipeline system.

[0097] Of course, in other examples, the number of through holes provided on the boss 411 may also be changed, and the number of through holes configured at the water inlet and the water outlet may be adjusted according to actual conditions.

[0098] When any through hole configured as the water inlet or the water outlet is blocked, the plug of the pipeline system can be inserted into the unblocked through hole, thereby expanding the flexibility of use of the joint part 42.

[0099] See also Figure 8 In some embodiments, the battery device 100 further includes a fastener (not shown in the figure), and the boss 411 is provided with a third opening 4111 extending through the boss 411 in the thickness direction thereof. The third opening 4111 is located around the through hole and is provided for the fastener to pass through to connect with the second section 32 .

[0100] A plurality of openings may be spaced around the joint portion 42. The fasteners may be, but are not limited to, screws and the like.

[0101] When installing the joint assembly 40, one end of the fastener can be passed through the third opening 4111 and connected to the second section 32 to improve the connection effect between the boss 411 and the second section 32, thereby connecting different parts of the joint assembly 40 to the second section 32, thereby improving the connection effect between the joint assembly 40 and the second section 32 and the sealing efficiency of the joint assembly 40.

[0102] In some embodiments, the joint assembly 40 also includes a first welding area (not shown in the figure), the first connection portion 412 faces the surface of the box frame 13 and forms a first welding area between the box frame 13, and the second connection portion 413 faces the surface of the second section 32 and forms a first welding area between the second section 32.

[0103] In other words, the surface of the joint assembly 40 facing the box frame 13 and the heat exchange plate 30 can be regarded as the first welding area. In the first welding area, the corresponding part of the joint assembly 40 can be brazed to the box frame 13 and the heat exchange plate 30 respectively.

[0104] In this way, the surface of the joint assembly 40 in contact with the box frame 13 and the heat exchange plate 30 can be welded to the corresponding box frame 13 or the heat exchange plate 30 as much as possible, thereby improving the sealing of the joint assembly 40 after installation.

[0105] like Figure 7 As shown, in some embodiments, the joint assembly 40 further includes a second welding area 43 , which is formed between the edge of the first connection portion 412 and the box frame 13 ; and between the second connection portion 413 and the edge of the second section 32 .

[0106] Exemplarily, the first surface of the joint assembly 40 is disposed toward the box frame 13 , and the orthographic projection contour of the first surface on the box frame 13 is regarded as the first contour, and the second welding area 43 is between the first contour and the box frame 13 .

[0107] The second surface of the joint assembly 40 faces the heat exchange plate 30 , and the orthographic projection contour of the second surface on the heat exchange plate 30 is regarded as the second contour, and the area between the second contour and the heat exchange plate 30 is also the second welding area 43 .

[0108] In this way, by welding the second welding area 43 where the edge of the joint assembly 40 is located, that is, welding the periphery of the joint assembly 40, secondary sealing can be performed when the joint assembly 40 is installed, further improving the sealing performance of the joint assembly 40 after installation.

[0109] Furthermore, the joint assembly 40 and the heat exchange plate 30 are prepared by arc welding in the second welding area 43 , and the joint assembly 40 and the box frame 13 are also prepared by arc welding in the second welding area 43 .

[0110] Arc welding itself has the effect of preventing defects such as pores and slag inclusions from being easily generated during the welding process, and the arc welding has a fast welding speed, so the welding speed and welding quality of the joint assembly 40 can be improved.

[0111] Furthermore, the battery device 100 further includes a blocking member 44 , which is detachably mounted on the joint portion 42 to block or expose the joint portion 42 .

[0112] The blocking member 44 can be installed on the joint assembly 40 in a convenient and detachable manner such as snap-fitting or plug-in. The shape of the blocking member 44 is adapted to the shape of the joint portion 42. For example, when the shape of the joint portion 42 is a through hole, the blocking member 44 can be plugged into the through hole.

[0113] In this way, when the joint assembly 40 is in an idle state, the sealing member 44 can be used to seal the joint portion 42 to block foreign matter from the outside, thereby reducing the probability of foreign matter entering the joint assembly 40 through the joint portion 42, thereby blocking the joint portion 42 and affecting the normal operation of the joint assembly 40.

[0114] In some embodiments, the connection portion 41 and the joint portion 42 are prepared by an integral molding process or a forging process.

[0115] The one-piece molding process has the advantages of high production efficiency, stable quality, and wide application range. The forging process has the advantages of improving the density and mechanical properties of the material, enhancing the strength and toughness of the material, reducing internal defects, and being suitable for processing parts with complex shapes and high dimensional accuracy.

[0116] Therefore, processing the connection portion 41 and the joint portion 42 using the above process can improve the performance of the obtained product.

[0117] In addition, some embodiments of the present application further provide an electrical device, which includes the battery device 100 in the above embodiment.

[0118] During the use of the battery device 100, the fluid can flow directly to the external pipeline system through the joint part 42. Because the joint part 42 and the connecting part 41 are two parts directly divided from the joint assembly 40, the fluid will not directly overflow from the joint part 42 when flowing through the joint part 42, and the gas generated inside the battery device 100 will not directly overflow through the joint part 42 when it is running. Such a configuration improves the sealing effect of the joint assembly 40 after assembly and reduces the probability of airtight failure of the joint assembly 40.

[0119] Specifically, in one embodiment, the battery device 100 includes a box body 10, a heat exchange plate 30, and a joint assembly 40. The joint assembly 40 includes a connecting portion 41 and a joint portion 42 in an integrated structure, wherein the connecting portion 41 is connected to the box body frame 13, and the joint portion 42 is connected to the heat exchange plate 30. The connecting portion 41 is convexly provided to form a boss 411, and the boss 411 is provided with a through hole, which is configured as the joint portion 42.

[0120] The surfaces of the joint assembly 40 facing the box frame 13 and the heat exchange plate 30 can be regarded as the first welding area. In the first welding area, brazing can be used to weld the corresponding parts of the joint assembly 40 to the box frame 13 and the heat exchange plate 30 respectively. The first surface of the joint assembly 40 is set toward the box frame 13, and the orthographic projection contour of the first surface on the box frame 13 is regarded as the first contour. The second surface of the joint assembly 40 faces the heat exchange plate 30, and the orthographic projection contour of the second surface on the heat exchange plate 30 is regarded as the second contour. The first contour and the second contour are welded to form a second welding area 43. Arc welding can be used in the second welding area 43 to weld the corresponding parts of the joint assembly 40 to the box frame 13 and the heat exchange plate 30 respectively.

[0121] When assembling the joint assembly 40, there will be no gap between the joint part 42 and the connection part 41, and the surface of the joint assembly 40 in contact with the box frame 13 and the heat exchange plate 30 can be welded to the corresponding box frame 13 or the heat exchange plate 30 as much as possible, thereby improving the sealing performance of the joint assembly 40 after installation. By welding the first contour and the second contour, that is, welding the periphery of the joint assembly 40, secondary sealing can be performed when the joint assembly 40 is installed, thereby further improving the sealing performance of the joint assembly 40 after installation.

[0122] When the battery device 100 is in operation, the gas generated inside the battery device 100 will not directly escape through the joint portion 42. This arrangement improves the sealing effect of the joint assembly 40 after assembly, and reduces the probability of airtight failure of the joint assembly 40.

[0123] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery device, characterized in that: include: The box body comprises a box body frame, wherein the box body frame encloses and forms a receiving cavity; The heat exchange plate comprises a first section and a second section connected to each other, wherein the first section is located in the accommodating cavity, and the second section is located outside the accommodating cavity and is protruded relative to the box frame; A joint assembly is disposed outside the accommodating cavity and connected to the box frame, and the joint assembly is communicated with the second section; A support plate, wherein the support plate is arranged on the box frame, the support plate carries the heat exchange plate, and along the thickness direction of the support plate, the orthographic projection range of the second section falls within the support plate.

2. The battery device according to claim 1, characterized in that: The joint assembly includes a connecting portion and a joint portion. The connecting portion is connected to the box frame. The joint portion is protruding relative to the connecting portion and is communicated with the second section.

3. The battery device according to claim 2, characterized in that: The connecting part includes a first connecting part and a second connecting part, the first connecting part is bent relative to the second connecting part, the first connecting part is connected to the box frame, the second connecting part is connected to the second section, the second connecting part is provided with a boss, the boss extends to the connection between the first connecting part and the second connecting part, and the boss is provided with the joint part.

4. The battery device according to claim 3, characterized in that: Along the thickness direction of the support plate, the orthographic projection range of the second segment falls within the orthographic projection range of the second connecting portion.

5. The battery device according to claim 4, characterized in that: The battery device further includes a locking member, the support plate is provided with a first opening, the second connection portion is provided with a second opening, and the locking member penetrates the first opening and the second opening to connect the support plate and the second connection portion together.

6. The battery device according to claim 5, characterized in that: The second connecting portion is provided with a groove, and the bottom wall of the groove is provided with the second opening.

7. The battery device according to claim 3, characterized in that: The boss is provided with a through hole penetrating the boss along the thickness direction of the support plate, and the through hole is configured as the joint portion.

8. The battery device according to claim 7, characterized in that: The joint part includes a water inlet end and a water outlet end, the boss is provided with at least two through holes, at least one of all the through holes is configured as the water inlet end, and at least one of the through holes is configured as the water outlet end.

9. The battery device according to claim 7, characterized in that: The battery device further comprises a fastener. The boss is provided with a third opening penetrating through the boss in its thickness direction. The third opening is located around the through hole and is provided for the fastener to pass through so as to be connected with the second section.

10. The battery device according to claim 3, characterized in that: The joint assembly further includes a first welding area formed between a surface of the first connection portion facing the box frame and the box frame, and between a surface of the second connection portion facing the second section and the second section.

11. The battery device according to claim 3, characterized in that: The joint assembly further includes a second welding area, which is formed between the edge of the first connecting portion and the box frame; and between the second connecting portion and the edge of the second section.

12. The battery device according to claim 11, characterized in that: The joint assembly and the heat exchange plate are prepared by arc welding in the second welding area, and the joint assembly and the box frame are also prepared by arc welding in the second welding area.

13. The battery device according to any one of claims 2 to 12, characterized in that: The battery device further includes a blocking member, which is detachably mounted on the joint portion to block or expose the joint portion.

14. The battery device according to any one of claims 2 to 12, characterized in that: The connecting part and the joint part are prepared by an integral molding process or a forging process.

15. An electrical device, characterized in that: Comprising the battery device as claimed in any one of claims 1 to 14.

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