Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device comprises a frame, a heat exchange plate, a connecting seat and a pipe joint, a containing cavity is defined by the frame, the heat exchange plate is arranged on one side of the containing cavity, the heat exchange plate is provided with a flow channel, the heat exchange plate extends to the outside of the containing cavity, an opening is formed in the outside of the containing cavity, and the opening communicates with the flow channel; the connecting seat covers the opening in the heat exchange plate and is connected with the heat exchange plate, the connecting seat is provided with a connecting through hole, and the connecting through hole is communicated with the opening; the pipe joints are connected to the connecting bases and communicate with the openings in the heat exchange plates through the connecting through holes. The heat exchange plate is provided with the part located outside the containing cavity, and the opening in the heat exchange plate is located outside the containing cavity, so that the connecting base and the opening are both located outside the containing cavity, on one hand, whether leakage occurs or not can be conveniently detected, and on the other hand, if leakage occurs in connection between the connecting base and the opening, the leakage can be conveniently maintained.

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] The battery device includes a box body, on which a heat exchange plate is usually arranged, and the heat exchange plate is used to exchange heat with the battery cells inside the box body, wherein the heat exchange plate is also connected to a pipe joint, so that the heat exchange medium can enter and exit the heat exchange plate through the pipe joint. However, the connection seat between the heat exchange plate and the pipe joint is complex in design, and if a leak occurs, it is inconvenient to detect and repair the leak between the heat exchange plate and the connection seat. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can repair the leakage problem when leakage occurs between the heat exchange plate and the connecting seat.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a battery device, which includes a frame, a heat exchange plate, a connecting seat and a pipe joint, wherein the frame is surrounded by a receiving cavity, the heat exchange plate is arranged on one side of the receiving cavity, the heat exchange plate has a flow channel, the heat exchange plate extends to the outside of the receiving cavity, and has an opening outside the receiving cavity, and the opening is connected to the flow channel; the connecting seat covers the opening on the heat exchange plate and is connected to the heat exchange plate, the connecting seat has a connecting through hole, and the connecting through hole is connected to the opening; the pipe joint is connected to the connecting seat and is connected to the opening on the heat exchange plate through the connecting through hole.

[0005] In the battery device of the above structure, the heat exchange plate extends outside the accommodating cavity, and the opening on the heat exchange plate is located outside the accommodating cavity, so that the connecting seat and the opening are both located outside the accommodating cavity. On the one hand, it is convenient to detect whether there is a leakage. On the other hand, if a leakage occurs in the connection between the two, the leakage can be conveniently repaired outside the box.

[0006] In a possible implementation, the connecting seat includes a first part and a second part, the first part is connected to the second part, the first part is connected to the heat exchange plate, the second part has a connecting through hole, and the first part and the second part are an integrally formed structure.

[0007] As described above, the connection base has good integrity, the pipe joint has high fixing reliability, and the pipe joint can be fixed on the box body only by using one device, the connection base, thereby simplifying the structure.

[0008] In a possible implementation manner, the second part is a flange.

[0009] As mentioned above, the pipe joint is connected to the heat exchange plate through the flange, and the flange connection pipe fitting has a good sealing effect, and the problem of heat exchange medium leakage is not likely to occur.

[0010] In a possible embodiment, the heat exchange plate includes a first plate body and a second plate body, the second plate body has a groove, the groove constitutes a part of the flow channel, the second plate body includes a plate edge located outside the groove, the first plate body is connected to the plate edge of the second plate body, the first plate body covers a part of the opening of the groove, the first plate body includes a target side located at the groove, the frame is located on the target side of the first plate body, the target side and the plate edge enclose the opening to form the opening, the second part is connected to the target side of the first plate body, and the second part is also connected to the plate edge of the second plate body.

[0011] In the above, the heat exchange plate can have a flow channel, the heat exchange plate can have an opening to communicate with the pipe joint, and the connecting seat is connected to the first plate body and the second plate body at the same time, thereby improving the integrity. On the other hand, when the above structure leaks between the first part and the target side of the first plate body, the heat exchange medium can flow out from the gap between the first part and the frame, thereby facilitating the monitoring of the leakage.

[0012] In a possible implementation manner, the first part is a fixing plate, the fixing plate is in contact with a frame wall of the frame, and the fixing plate is arranged at an angle to the flange.

[0013] In the above, the first part of the connecting seat is plate-shaped, which makes it easier to detect leakage. In addition, the fixing plate and the flange are bent, and the connecting seat has higher strength.

[0014] In a possible implementation manner, the first plate body is a flat plate, and the target side of the first plate body is further connected to the first part of the connecting seat.

[0015] As described above, the first plate body does not need to be manufactured through processes such as stamping, thereby reducing production costs.

[0016] In a possible implementation manner, the target side of the first plate body is bent to form a connecting portion, and the connecting portion is connected to the first part of the connecting seat.

[0017] As described above, the connection area between the connection seat and the heat exchange plate can be increased.

[0018] In a possible implementation manner, the connection seat is connected to the heat exchange plate by brazing, and the first plate body is connected to the second plate body by brazing.

[0019] As mentioned above, the brazing heating area is small, which can reduce the deformation, is suitable for connecting plates of various shapes, and can reduce the sealing risk.

[0020] In a possible implementation, the number of the connecting through holes on the second part is two, the number of the pipe joints is two, the two pipe joints are respectively a liquid inlet pipe joint and a liquid outlet pipe joint, and the liquid inlet pipe joint and the liquid outlet pipe joint are respectively connected to two connecting through holes.

[0021] As described above, the heat exchange medium can enter the flow channel of the heat exchange plate through the liquid inlet pipe joint and flow out of the flow channel of the heat exchange plate through the liquid outlet pipe joint.

[0022] In a possible implementation manner, the frame is connected to the heat exchange plate by friction stir welding.

[0023] As mentioned above, the friction stir welding thermal connection is more reliable.

[0024] In order to solve the above technical problem, another technical solution adopted by the present application is to provide an electrical device, which includes a battery device, and the battery device is the above-mentioned battery device, and the battery device is used to provide electrical energy.

[0025] In the above-mentioned electrical device, the heat exchange plate has a portion located outside the accommodating cavity, and the opening on the heat exchange plate is located outside the accommodating cavity, so that the connecting seat and the opening are both located outside the accommodating cavity. On the one hand, it is convenient to detect whether there is a leak. On the other hand, if a leak occurs in the connection between the two, the leak can be easily repaired.

[0026] 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

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0029] Figure 2 is a schematic structural diagram of a box in a battery device according to some embodiments;

[0030] Figure 3 is a schematic structural diagram of a battery cell in a battery device according to some embodiments;

[0031] Figure 4 for Figure 2A schematic diagram of the structure of the box from a top view;

[0032] Figure 5 for Figure 4 A schematic structural diagram of the first embodiment along the cross section Aa;

[0033] Figure 6 for Figure 4 A schematic structural diagram of the second embodiment along the cross section Aa;

[0034] Figure 7 for Figure 2 Schematic diagram of part of the box structure.

[0035] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 110, battery cell; 120, housing; 121, frame; 122, heat exchange plate; 221, first plate; 2211, target side; 2212, connecting part; 222, second plate; 2221, plate edge; 223, flow channel; 224, opening; 123, accommodating cavity; 124, pipe joint; 125, connecting seat; 251, first part; 511, step groove; 252, second part. DETAILED DESCRIPTION

[0036] The following is a detailed description of the embodiments of the technical solution of the present application. 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.

[0037] 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.

[0038] 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, unless otherwise clearly and specifically defined, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two (including two), and "multiple pieces" refers to more than two (including two).

[0039] 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.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. 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, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "liquid level", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0042] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] At present, from the perspective of market development, batteries are being used more and more widely. Batteries are not only used in energy storage power systems such as hydraulic, thermal, wind 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 battery application areas, the market demand is also constantly expanding.

[0044] The battery device includes a box body, on which a heat exchange plate is usually arranged, and the heat exchange plate is used to exchange heat with the battery cells inside the box body, wherein the heat exchange plate is also fixed with a connection seat, so that a pipe joint can be connected through the connection seat, so that the heat exchange medium can circulate in the heat exchange plate through the pipe joint. The related art proposes a battery device, in which if there is a leak between the heat exchange plate and the connection seat, the leak between the heat exchange plate and the connection seat cannot be repaired.

[0045] Based on the above considerations, in order to solve the technical problem in the prior art that if a leakage occurs, the leakage problem cannot be repaired, the present application proposes a battery device and an electrical device, in which the heat exchange plate of the battery device extends to the outside of the accommodating cavity and has an opening outside the accommodating cavity, so that the connecting seat and the opening are both located outside the accommodating cavity. When a leakage occurs in the connection between the two, the leakage can be easily repaired.

[0046] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0047] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0048] 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.

[0049] 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.

[0050] In order to improve the performance of the electrical device, the present application provides a battery device, please refer to Figure 2 , Figure 4 and Figure 5 . Figure 2 is a schematic structural diagram of a box in a battery device according to some embodiments; Figure 4 for Figure 2 A schematic diagram of the structure of the box from a top view; Figure 5 for Figure 4A schematic structural diagram of the first embodiment along the cross section Aa.

[0051] In some embodiments, the battery device 100 includes a frame 121, a heat exchange plate 122, a connection seat 125, and a pipe joint 124. The frame 121 is surrounded by a receiving chamber 123. The heat exchange plate 122 is disposed on one side of the receiving chamber 123. The heat exchange plate 122 has a flow channel 223, which extends to the outside of the receiving chamber 123 and has an opening 224 outside the receiving chamber 123, and the opening 224 is connected to the flow channel 223. The connection seat 125 covers the opening 224 on the heat exchange plate 122 and is connected to the heat exchange plate 122. The connection seat 125 has a connecting through hole (not shown), which is connected to the opening 224. The pipe joint 124 is connected to the opening 224 on the heat exchange plate 122 through the connecting through hole.

[0052] The battery device 100 also includes a battery cell 110. Figure 3 , Figure 3 1 is a schematic diagram of the structure of a battery cell in a battery device according to some embodiments. The battery cell 110 is arranged in a receiving chamber 123. The frame 121 is used to protect the battery cell 110 and provide a closed and electrically isolated environment for the battery cell 110. In this embodiment, the frame 121 is rectangular, and in some other embodiments, the frame 121 can also be circular, triangular, irregular polygonal, etc. The pipe joint 124 includes a liquid inlet pipe joint (not marked) and a liquid outlet pipe joint (not marked), which is used for the heat exchange medium to flow into or out of the heat exchange plate 122. In this embodiment, the frame 121 is arranged on the heat exchange plate 122, and the frame 121 and the heat exchange plate 122 jointly define the receiving chamber 123, wherein the size of the heat exchange plate 122 is larger than the bottom opening size of the receiving chamber 123, and the heat exchange plate 122 extends to the outside of the receiving chamber 123, so that the opening on the heat exchange plate 122 can be located outside the receiving chamber 123. The connecting seat 125 is used to connect the pipe joint 124 with the opening on the heat exchange plate 122, and to fix the pipe joint 124 on the heat exchange plate 122. In the related art, at least part of the opening on the heat exchange plate 122 is located in the accommodating cavity 123 or in the projection area of ​​the frame 121 on the heat exchange plate 122. If a leak occurs in the connection between the connecting seat 125 and the opening, the leakage area is located in the accommodating cavity or the leakage area is blocked by the frame, and the leakage problem cannot be repaired. In this embodiment, the heat exchange plate 122 extends outside the accommodating cavity 123, and the connecting seat 125 and the opening are both located outside the accommodating cavity. If a leak occurs in the connection between the two, the leakage problem can be conveniently repaired outside the accommodating cavity.

[0053] In the battery device 100 of the above structure, the heat exchange plate 122 has a portion located outside the accommodating chamber 123, and the opening on the heat exchange plate 122 is located outside the accommodating chamber 123, so that the connecting seat 125 and the opening are both located outside the accommodating chamber. On the one hand, it is convenient to detect whether there is a leakage, and on the other hand, if a leakage occurs in the connection between the two, the leakage can be easily repaired.

[0054] In some embodiments, the connecting seat 125 includes a first part 251 and a second part 252, the first part 251 is connected to the second part 252, the first part 251 is connected to the heat exchange plate 122, the second part 252 has a connecting through hole, and the first part 251 and the second part 252 are an integrally formed structure.

[0055] In this embodiment, the first part 251 and the second part 252 are an integrally formed structure, and the integrally formed connection seat 125 has better integrity. In some other embodiments, the first part 251 and the second part 252 can also be welded or connected by other means such as bolts and screws. Among them, the first part 251 is connected to the heat exchange plate 122, and the first part 251 is used to fix the second part 252 and the heat exchange plate 122 together, thereby improving the fixing strength of the second part 252 and making the pipe joint 124 more secure after being fixed. The connecting through hole on the second part 252 is a through hole structure, one end of the connecting through hole is connected to the opening 224 on the heat exchange plate 122, and the other end of the connecting through hole is connected to the pipe joint 124.

[0056] In the above structure, the pipe joint 124 can be fixed on the box body 120 by only using a connecting seat 125, thereby simplifying the structure.

[0057] In some embodiments, the second portion 252 is a flange.

[0058] The pipe joint 124 is connected by the flange, and the sealing effect is good, the connection strength is high, and the stability is good. Among them, in this embodiment, after the pipe joint 124 is aligned with the connecting through hole on the flange, the pipe joint 124 is welded to the flange, and the welding sealing effect is better, and the problem of heat exchange medium leakage is not easy to occur. In addition, in this embodiment, the welding method of the pipe joint 124 and the flange is brazing. In other embodiments, the welding method of the pipe joint 124 and the flange can also be stir friction welding, arc welding, etc. In other embodiments, threaded holes can be set on the flange, and fixing holes can be set on the pipe joint 124. After the pipe joint 124 is aligned with the connecting through hole on the flange, the pipe joint 124 and the flange are fixed together by bolts. In addition, in this embodiment, the flange is a rectangular disc structure. The rectangular flange can make the flange have a larger connection area with the first part 251, so that the connection strength between the first part 251 and the second part 252 of the connecting seat 125 is higher. In other embodiments, the flange can also be circular, trapezoidal, irregular polygonal, etc.

[0059] As mentioned above, the pipe joint 124 is connected to the heat exchange plate 122 through the flange, and the flange connection pipe fitting has a good sealing effect, and the problem of heat exchange medium leakage is not likely to occur.

[0060] Please refer to Figure 7 , Figure 7 for Figure 2 Schematic diagram of a partial structure of the box. In some embodiments, the heat exchange plate 122 includes a first plate body 221 and a second plate body 222, the second plate body 222 has a groove (not shown), the groove constitutes a part of the flow channel 223, the second plate body 222 includes a plate edge 2221 located outside the groove, the first plate body 221 is connected to the plate edge 2221 of the second plate body 222, the first plate body 221 covers the opening of the groove, the first plate body 221 includes a target side 2211 located at the groove, the frame 121 is located on the target side 2211 of the first plate body 221, the target side 2211 and the plate edge 2221 are enclosed to form an opening 224, the second part 252 is connected to the target side 2211 of the first plate body 221, and the second part 252 is also connected to the plate edge 2221 of the second plate body 222.

[0061] The second plate 222 is a bent plate. In this embodiment, the second plate 222 is made by stamping. In some other embodiments, the second plate 222 can also be made by injection molding or welding. After the first plate 221 is connected to the second plate 222, a flow channel 223 is formed between the grooves of the first plate 221 and the second plate 222, and the heat exchange medium can flow in the flow channel 223. The plate edge 2221 of the second plate 222 is used to connect with the first plate 221 and the second part 252 of the connecting seat 125. The first plate 221 covers the opening part of the groove, that is, the first plate 221 does not cover the entirety of the groove. Among them, after the first plate 221 covers the opening part of the groove, the target side 2211 of the first plate 221 is located at the upper part of the groove opening, and an opening 224 is formed between the target side 2211 of the first plate 221 located at the upper part of the groove and the plate edge 2221 of the second plate 222. In this embodiment, the frame 121 is also located on the target side 2211 of the first plate 221 located at the upper part of the groove, so that the first part 251 of the connecting seat 125 can also be attached to the frame wall of the frame 121 .

[0062] As described above, the heat exchange plate 122 can have a flow channel 223, and the heat exchange plate 122 can have an opening 224 to communicate with the pipe joint 124. The connection seat 125 is connected to the first plate body 221 and the second plate body 222 at the same time, thereby improving the integrity. On the other hand, when the structure leaks between the first part 251 and the target side 2211 of the first plate body 221, the heat exchange medium can flow out from the gap between the first part 251 and the frame 121, thereby facilitating the monitoring of the leakage.

[0063] In some embodiments, the first portion 251 is a fixing plate, the fixing plate is in contact with the frame wall of the frame 121, and the fixing plate is arranged at an angle with the flange.

[0064] In the present embodiment, the fixing plate is rectangular, and the fixing plate being rectangular can make the fixing plate and the flange plate of the same rectangular shape have a larger connection area, so that the connection strength between the first part 251 and the second part 252 of the connecting seat 125 is higher. In the present embodiment, the first part 251 is perpendicular to the second part 252. In some other embodiments, the angle between the first part 251 and the second part 252 can also be 85 degrees, 80 degrees, 95 degrees, 100 degrees and other reasonable degrees. On the other hand, the fixing plate is abutted against the frame wall of the frame 121, and the fixing plate and the frame 121 are not embedded together. When leakage occurs between the fixing plate and the target side 2211 of the first plate body 221, it is more convenient for the leaked heat exchange medium to flow out from the gap between the first part 251 and the frame 121.

[0065] As mentioned above, the first part 251 is a fixed plate. In addition, the fixed plate and the flange are curved, and the connection seat 125 has a higher strength. In addition, the first part 251 is a flat plate. When leakage occurs between the first part 251 and the target side 2211 of the first plate body 221, it is convenient for the heat exchange medium to flow out from the gap between the first part 251 and the frame 121. In addition, the fixed plate and the flange are curved, and the connection seat 125 has a higher strength.

[0066] In some embodiments, the first plate body 221 is in the shape of a flat plate, and the target side 2211 of the first plate body 221 is further connected to the first portion 251 .

[0067] See also Figure 6 , Figure 6 for Figure 4 Schematic diagram of the structure of the second embodiment along the cross section Aa In this embodiment, the first plate 221 is in the shape of a flat plate. The first plate 221 can be directly cut to obtain the first plate 221 of a specified shape, without the need for stamping, welding and other processes, which can reduce production costs. Furthermore, in this embodiment, the first part 251 of the connecting seat 125 is connected to the side of the target side 2211 of the first plate 221 and is also recessed to form a step groove 511. The target side 2211 of the first plate 221 is connected to the step groove 511 of the first part 251 to increase the connection area between the first part 251 and the target side 2211 of the first plate 221. In other embodiments, please refer to Figure 5 , Figure 5 for Figure 4 Schematic diagram of the structure of the first embodiment along the cross section Aa. The first plate body 221 can also be a bent plate, and the target side 2211 of the first plate body 221 is bent to form a connecting portion 2212, and the connecting portion 2212 is connected to the first part 251. Among them, the bending angle of the end of the first plate body 221 is 90 degrees, and the connecting portion 2212 is parallel to the first part 251 of the connecting seat 125, so that the connecting portion 2212 at the end of the first plate body 221 can fit the first part 251, increase the contact area between the connecting portion 2212 and the first part 251, reduce the risk of leakage between the first plate body 221 and the first part 251, and improve the connection strength. In addition, the first plate body 221 of the bent plate can be made by stamping, welding, etc.

[0068] As mentioned above, when the first plate body 221 is a flat plate, the first plate body 221 does not need to be made by stamping and other processes, which reduces production costs. When the first plate body 221 is a curved plate, the connection area between the connecting seat 125 and the heat exchange plate 122 can be increased, the structural strength can be improved, and the risk of leakage can be reduced.

[0069] In some embodiments, the connection seat 125 is connected to the heat exchange plate 122 by brazing, and the first plate body 221 is connected to the second plate body 222 by brazing.

[0070] In this embodiment, the first part 251 of the connection seat 125 is brazed to the target side 2211 of the first plate body 221, and the first part 251 of the connection seat 125 is brazed to the plate edge 2221 of the second plate body 222. Brazing has small thermal deformation and good sealing, and is also suitable for welding between complex structures. In other embodiments, the first part 251 of the connection seat 125 and the heat exchange plate 122 can also be connected by stir friction welding, arc welding, etc. In other embodiments, the second part 252 of the connection seat 125 and the plate edge 2221 of the second plate body 222 can also be connected together by brazing to improve the fixing strength of the connection seat 125 and the heat exchange plate 122.

[0071] In some embodiments, there are two connecting through holes on the second part 252, and there are two pipe joints 124. The two pipe joints are a liquid inlet pipe joint and a liquid outlet pipe joint, and the liquid inlet pipe joint and the liquid outlet pipe joint are respectively connected to the two connecting through holes.

[0072] The liquid inlet pipe joint is used to inject heat exchange medium into the flow channel 223 of the heat exchange plate 122. The liquid outlet pipe joint is used to output the heat exchange medium in the flow channel 223. In this embodiment, the number of connecting through holes is two, and the heat exchange plate 122 is connected to one liquid inlet pipe joint and one liquid outlet pipe joint. In some other embodiments, the number of connecting through holes can also be multiple, so that the heat exchange plate 122 can be connected to multiple liquid inlet pipe joints or liquid outlet pipe joints.

[0073] As described above, the heat exchange medium can enter the flow channel 223 of the heat exchange plate 122 through the liquid inlet pipe joint, and flow out of the flow channel 223 of the heat exchange plate 122 through the liquid outlet pipe joint.

[0074] In some embodiments, the frame 121 is connected to the heat exchange plate 122 by friction stir welding.

[0075] In this embodiment, the frame 121 is connected to the first plate 221 of the heat exchange plate 122 by friction stir welding. In some other embodiments, the welding method may also be arc welding, brazing, etc. In addition, the frame 121 and the heat exchange plate 122 may also be connected by bolts, screws, etc.

[0076] As described above, compared with brazing, friction stir welding has a higher thermal connection strength, which can improve the strength of the battery device 100 .

[0077] The present application also provides an electric device, which includes a battery device 100. It should be noted that the battery device 100 in this embodiment is the battery device 100 described in the above embodiment, and will not be described in detail here.

[0078] As described above, in the battery device 100, the heat exchange plate has a portion located outside the accommodating cavity, and the opening on the heat exchange plate is located outside the accommodating cavity, so that the connecting seat and the opening are both located outside the accommodating cavity. On the one hand, it is convenient to detect whether there is a leakage, and on the other hand, if a leakage occurs in the connection between the two, the leakage can be easily repaired.

[0079] Finally, in a specific application scenario, the problem that the heat exchange plate 122 in the existing battery device 100 leaks and cannot be repaired is addressed. The battery device 100 of the present application includes a box body 120, and the box body 120 includes a frame 121, a heat exchange plate 122, a connection seat 125 and a pipe joint 124. The frame 121 is surrounded by a receiving chamber 123. The heat exchange plate 122 is arranged on one side of the receiving chamber 123. The heat exchange plate 122 has a flow channel 223, and the heat exchange plate 122 extends to the outside of the receiving chamber 123, and has an opening 224 outside the receiving chamber 123, and the opening 224 is connected to the flow channel 223. The connection seat 125 covers the opening 224 on the heat exchange plate 122 and is connected to the heat exchange plate 122. The connection seat 125 has a connecting through hole (not shown), and the connecting through hole is connected to the opening 224. The pipe joint 124 is connected to the opening 224 on the heat exchange plate 122 through the connecting through hole. The connecting seat 125 includes a first part 251 and a second part 252. The first part 251 is connected to the second part 252. The first part 251 is connected to the heat exchange plate 122. The second part 252 has a connecting through hole. The first part 251 and the second part 252 are an integrally formed structure. The second part 252 is a flange. The heat exchange plate 122 includes a first plate body 221 and a second plate body 222, the second plate body 222 has a groove, the second plate body 222 includes a plate edge 2221 located outside the groove, the first plate body 221 is connected to the plate edge 2221 of the second plate body 222, the first plate body 221 covers the opening of the groove, the first plate body 221 includes a target side 2211 located at the groove, the frame 121 is located on the target side 2211 of the first plate body 221, the target side 2211 and the plate edge 2221 are enclosed to form an opening 224, the second part 252 is connected to the target side 2211 of the first plate body 221, and the second part 252 is also connected to the plate edge 2221 of the second plate body 222. The first part 251 is a fixed plate, the fixed plate is arranged to fit the frame wall of the frame 121, and the fixed plate is arranged at an angle to the flange. The connection seat 125 is brazed to the heat exchange plate 122, and the first plate body 221 is brazed to the second plate body 222. The number of connecting through holes on the second part 252 is two, and the pipe joint 124 includes a liquid inlet pipe joint and a liquid outlet pipe joint, and the liquid inlet pipe joint and the liquid outlet pipe joint are respectively connected to the two connecting through holes. The frame 121 is connected to the heat exchange plate 122 by stir friction welding.

[0080] Through the above method, the heat exchange plate has a portion located outside the accommodating cavity, and the opening on the heat exchange plate is located outside the accommodating cavity, so that the connecting seat and the opening are both located outside the accommodating cavity. On the one hand, it is convenient to detect whether there is a leak. On the other hand, if a leak occurs in the connection between the two, the leak can be easily repaired.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises a box, and the box comprises: A frame, wherein the frame is surrounded to form a receiving cavity, A heat exchange plate, the heat exchange plate is arranged on one side of the accommodating cavity, the heat exchange plate has a flow channel, the heat exchange plate extends to the outside of the accommodating cavity, and has an opening outside the accommodating cavity, and the opening is communicated with the flow channel; A connecting seat, the connecting seat covers the opening on the heat exchange plate and is connected to the heat exchange plate, the connecting seat has a connecting through hole, and the connecting through hole is connected to the opening; A pipe joint is connected to the connection seat and communicates with the opening on the heat exchange plate through the connection through hole.

2. The battery device according to claim 1, characterized in that: The connecting seat includes a first part and a second part, the first part is connected to the second part, the first part is connected to the heat exchange plate, the second part has the connecting through hole, and the first part and the second part are an integrally formed structure.

3. The battery device according to claim 2, characterized in that: The second part is a flange.

4. The battery device according to claim 2, characterized in that: The heat exchange plate includes a first plate body and a second plate body, the second plate body has a groove, the groove constitutes a part of the flow channel, the second plate body includes a plate edge located outside the groove, the first plate body is connected to the plate edge of the second plate body, the first plate body covers a part of the opening of the groove, the first plate body includes a target side located at the groove, the frame is located on the target side of the first plate body, the target side and the plate edge enclose the opening, the second part is connected to the target side of the first plate body, and the second part is also connected to the plate edge of the second plate body.

5. The battery device according to claim 3, characterized in that: The first part is a fixing plate, the fixing plate is fitted with the frame, and the fixing plate and the flange are arranged at an angle.

6. The battery device according to claim 4, characterized in that: The first plate body is a flat plate.

7. The battery device according to claim 4, characterized in that: The target side of the first plate is bent to form a connecting portion, and the connecting portion is connected to the first part of the connecting seat.

8. The battery device according to claim 4, characterized in that: The connecting seat is connected to the heat exchange plate by brazing, and the first plate body is connected to the second plate body by brazing.

9. The battery device according to any one of claims 2 to 8, characterized in that: The number of connecting through holes on the second part is two, the number of the pipe joints is two, the two pipe joints are respectively a liquid inlet pipe joint and a liquid outlet pipe joint, and the liquid inlet pipe joint and the liquid outlet pipe joint are respectively connected to two connecting through holes.

10. The battery device according to any one of claims 1 to 8, characterized in that: The frame is connected to the heat exchange plate by friction stir welding.

11. An electrical device, characterized in that: The electrical device comprises the battery device according to any one of claims 1 to 10, and the battery device is used to provide electrical energy.

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