Battery device and electric device

Abstract

The invention discloses a battery device and a power utilization device, and the battery device comprises a box body which is internally provided with a containing cavity and comprises a first plate; the heat exchange assembly comprises a first heat exchange part and a second heat exchange part which communicate with each other, the first heat exchange part is arranged outside the box body, and the second heat exchange part is arranged on the face, facing the containing cavity, of the first plate; the connecting block is arranged on the first heat exchange part; the heat exchange connector penetrates through the connecting block in the first direction and then is connected with the open hole in the first heat exchange part in a sealed mode, and the heat exchange connector is located outside the connecting block and welded to the connecting block. According to the scheme, the sealing performance of connection between the heat exchange connector and the first heat exchange part can be guaranteed, the sealing performance of the heat exchange connector and the connecting block can be guaranteed, and the sealing performance of the heat exchange connector during connection is effectively improved. Due to the fact that the heat exchange connector is connected with the first heat exchange part and the connecting block in a sealed mode, the sealing reliability can be improved.

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 generally includes a lower box, a battery module accommodated in the lower box, and a sealing cover disposed on an upper cover of the lower box. In order to make the battery module have a better operating temperature range, a water cooling plate is generally installed in the lower box.

[0003] A water-cooling joint is installed on the water-cooling plate in the related art. When the water-cooling joint is in use, there is a problem of poor sealing between the water-cooling joint and the water-cooling plate. Summary of the invention

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can solve the problem of poor sealing between the water-cooling joint and the water-cooling plate.

[0005] In order to solve the above technical problems, in a first aspect, the present application proposes a battery device, comprising: A box body having a receiving cavity therein, wherein the box body comprises a first plate; A heat exchange component, the heat exchange component comprising a first heat exchange part and a second heat exchange part that are connected, the first heat exchange part is arranged outside the box, and the second heat exchange part is arranged on a side of the first plate facing the accommodating cavity; A connecting block, the connecting block being arranged on the first heat exchange part; A heat exchange joint, wherein the heat exchange joint passes through the connection block along a first direction and is sealedly connected to the opening on the first heat exchange part, and the heat exchange joint is located outside the connection block and is welded to the connection block, wherein the first direction is the height direction of the box body.

[0006] In the technical solution of the embodiment of the present application, after the connection block is fixed to the first heat exchange part, the heat exchange joint passes through the connection block and is sealed and connected to the opening on the first heat exchange part. At the same time, the heat exchange joint is located outside the connection block and is welded to the connection block. In this way, not only the sealing of the connection between the heat exchange joint and the first heat exchange part can be ensured, but also the sealing of the heat exchange joint and the connection block can be ensured, which effectively improves the sealing of the heat exchange joint during connection. Since the heat exchange joint is sealed and connected to the first heat exchange part and the connection block, the sealing reliability can also be improved.

[0007] In some embodiments, an insert portion is provided at one end of the heat exchange joint facing the opening, and a protrusion is provided circumferentially on the side surface of the heat exchange joint; The inserting part cooperates with the opening, and the protruding part covers the opening. Thus, when the inserting part is inserted into the opening, the protruding part can cover the opening, thereby improving the sealing performance between the inserting part and the opening.

[0008] In some embodiments, the protrusion is welded to the first heat exchange part, so that the sealing between the protrusion and the first heat exchange part can be effectively improved, and the sealing between the insertion part and the opening can be ensured.

[0009] In some embodiments, a connection seat is provided on the heat exchange joint; The connection seat is located outside the connection block on a side away from the first heat exchange part, and the connection seat is welded to the side of the connection block away from the first heat exchange part. In this way, the heat exchange joint can be conveniently fixed to the connection block through the connection seat before welding.

[0010] In some embodiments, the connection block includes a profile and a sealing plate, the profile has opening structures on both sides along the second direction, the profile is respectively welded with the sealing plates on both sides along the second direction, and the sealing plates are used to seal the opening sides of the profile along the second direction, and the second direction intersects with the first direction. In this way, the connection block can be ensured to be sealed as a whole.

[0011] In some embodiments, the side of the profile facing the first heat exchange portion is welded to the first heat exchange portion, the heat exchange joint passes through the profile along the first direction and is welded to the opening, the connecting seat is located outside the side of the profile facing away from the first heat exchange portion, and the connecting seat is welded to the side of the profile facing away from the first heat exchange portion.

[0012] Since the profile is welded to the first heat exchange part, sealing plates are welded on both sides of the profile along the second direction, so that the interior of the profile is a closed structure as a whole, and at the same time, the profile and the first heat exchange part are also a closed structure. In this way, even if the sealing structure formed by the heat exchange joint and the opening on the first heat exchange part fails, the welding of the profile, the sealing plate and the first heat exchange part can ensure that the heat exchange joint and the first heat exchange part are in a sealed environment, which effectively improves the sealing reliability.

[0013] In some embodiments, a first concave portion is provided on a side of the first side plate of the box body facing the profile; The profile is welded to the first heat exchange portion, and at least a portion of the profile is located in the first inner recess, so that it is convenient to fix the profile on the first side plate.

[0014] In some embodiments, the profile is provided with a plug hole along the first direction, and the protrusion passes through the plug hole along the first direction and is welded to the first heat exchange part; the connection seat covers the plug hole. In this way, it is not only convenient for the heat exchange joint to pass through the profile, but also the connection seat covers the plug hole. The connection seat is welded to the side of the profile away from the first heat exchange part. At this time, the connection seat and the profile form a sealing structure, so that the gap between the heat exchange joint and the plug hole can be sealed.

[0015] In some embodiments, the profile is provided with a first extension portion, and the first extension portion is provided with a first connection hole, so that it is convenient to connect the profile with other components.

[0016] In some embodiments, the battery device further comprises a cap, which is disposed on the heat exchange joint and is used to seal the heat exchange joint, so as to facilitate sealing the heat exchange joint and prevent debris from entering the first heat exchange part from the heat exchange joint.

[0017] In some embodiments, an elastic column is disposed inside the cap; When the cap is disposed on the heat exchange joint, the elastic column is located in the water inlet channel on the heat exchange joint, so that the cap can be stably located on the heat exchange joint.

[0018] In some embodiments, the elastic column is interference fit with the water inlet channel, so that the elastic column can be stably located in the water inlet channel, thereby ensuring that the cap is stably located on the heat exchange joint.

[0019] In some embodiments, the battery device further comprises a side beam; The side beam is arranged on the outer side of the second side plate of the box body, so that it is convenient to connect the box body with the whole vehicle.

[0020] In some embodiments, an air guide hole is provided on the second side panel, and the air guide hole is configured to connect the inside and the outside of the box.

[0021] In this way, when the battery cells in the box experience thermal runaway, the gas will be quickly discharged to the outside through the air ducts.

[0022] In some embodiments, a second extension portion is disposed at the periphery of the second heat exchange portion, and a second inner recess is disposed at a side of the box body facing the second heat exchange portion; the second extension portion is located in the second inner recess.

[0023] In this way, the second heat exchange part can be more firmly connected to the bottom surface of the box body.

[0024] In some embodiments, the first plate is a bottom plate, and the second heat exchange portion is disposed on a side of the bottom plate facing the accommodating cavity.

[0025] In a second aspect, the present application proposes an electrical device, comprising a battery device as described in any one of the embodiments of the present application.

[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] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the 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: Figure 1 A schematic diagram of the structure of an electric device provided in some embodiments of the present application; Figure 2 A schematic diagram of the structure of a battery provided in some embodiments of the present application; Figure 3 A schematic diagram of the structure of a battery cell provided in some embodiments of the present application; Figure 4 A schematic diagram of the structure of a box provided in some embodiments of the present application; Figure 5 for Figure 4 A top view of Figure 6 for Figure 4 Exploded diagram of Figure 7 for Figure 6 The enlarged schematic diagram of point A in the middle; Figure 8 A cross-sectional view of a box provided for some embodiments of the present application; Fig. 9 A schematic diagram of the connection structure between the profile and the box provided in some embodiments of the present application; Fig.10 A schematic diagram of the structure of a cap provided in some embodiments of the present application; Fig.11 for Figure 6 The enlarged schematic diagram of point B in the middle; Fig.12 Another structural schematic diagram of a box provided in some embodiments of the present application; Fig.13 A schematic diagram of a second side panel provided in some embodiments of the present application; Fig.14A cross-sectional view of a box provided in some embodiments of the present application at another viewing angle; Fig.15 for Fig.14 The enlarged schematic diagram of the center C; Fig.16 A schematic diagram of the connection structure between the connection base and the first heat exchange part provided in some embodiments of the present application; Fig.17 Schematic diagram of a connection socket provided for some embodiments of the present application.

[0028] The reference numerals in the specific implementation manner are as follows: 1000. Vehicles; 100, battery; 200, controller; 300, motor; 110, box body; 111, first part; 112, second part; 120, battery cell; 121, shell; 122, end cover; 123, electrode assembly; 10. Box body; 101. First side plate; 1011. First inner recess; 102. Second side plate; 1021. Air guide hole; 103. Second reinforcing rib; 104. Third side plate; 1041. Second inner recess; 11. Heat exchange assembly; 113. First heat exchange part; 1131. Opening hole; 114. Second heat exchange part; 115. Second extension part; 12. Connecting block; 124. Profile; 1241. Socket; 1242. First extension part; 12421. First connecting hole; 1243. Upper side; 1244. Lower side; 125. Closing plate; 13. Heat exchange joint; 131. Connecting seat; 132. Insertion part; 133. Protrusion; 14. Cover cap; 141. Elastic column; 15. Side beam; 151. First reinforcing rib; 152. Second connecting hole; 153. Support plate. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0032] 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.

[0033] 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.

[0034] In the description of the embodiments of the present application, 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).

[0035] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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.

[0036] 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.

[0037] 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.

[0038] In the related art, the battery generally includes a lower box, a battery module accommodated in the lower box, and a sealing cover disposed on an upper cover of the lower box. In order to make the battery module have a better operating temperature range, a water cooling plate is generally installed in the lower box.

[0039] In the cooling system of the power battery, the water-cooling joint and the water-cooling plate are mostly connected by threads, which not only has a poor sealing effect, but also causes the water-cooling joint to shake relative to the water-cooling plate, further affecting the sealing between the water-cooling joint and the water-cooling plate.

[0040] Based on the above considerations, in order to solve the problem of poor sealing between the water-cooling joint and the water-cooling plate, a battery device is designed, which includes a box body, a heat exchange assembly, a connecting block and a heat exchange joint, wherein the box body has a accommodating cavity inside, and the box body includes a first plate; the heat exchange assembly includes a first heat exchange part and a second heat exchange part that are connected, the first heat exchange part is arranged on the outside of the box body, and the second heat exchange part is arranged on the side of the first plate facing the accommodating cavity; the connecting block is arranged on the first heat exchange part; the heat exchange joint passes through the connecting block along a first direction and is sealed and connected to the opening on the first heat exchange part, and the heat exchange joint is located on the outside of the connecting block and is welded to the connecting block, wherein the first direction is the height direction of the box body.

[0041] In the technical solution of the embodiment of the present application, after the connection block is fixed to the first heat exchange part, the heat exchange joint passes through the connection block and is sealed and connected to the opening on the first heat exchange part. At the same time, the heat exchange joint is located outside the connection block and is welded to the connection block. In this way, not only can the sealing of the connection between the heat exchange joint and the first heat exchange part be ensured, but also because the connection block is fixed to the first heat exchange part and the heat exchange joint is welded to the connection block, under the limiting effect of the connection block, the stability of the connection between the heat exchange joint and the heat exchange component can be ensured, thereby avoiding the shaking of the heat exchange joint relative to the heat exchange component, and effectively improving the sealing of the heat exchange joint during connection. Since the heat exchange joint is sealed and connected to the first heat exchange part and the connection block, the reliability of the overall seal can also be improved.

[0042] The battery in this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. The battery can be used as a power source or power system for an electrical device, which is conducive to improving the overall performance of the battery and facilitating the promotion of the battery.

[0043] The above-mentioned electrical devices may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0044] 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.

[0045] Please refer to Figure 1 , Figure 1 A 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 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 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 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0046] In some embodiments of the present application, the battery 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.

[0047] Please refer to Figure 2 , Figure 2An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a box body 110 and a battery cell 120, and the battery cell 120 is accommodated in the box body 110. Among them, the box body 110 is used to provide a storage space for the battery cell 120, and the box body 110 can adopt a variety of structures. In some embodiments, the box body 110 may include a first part 111 and a second part 112, the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 120. The second part 112 may be a hollow structure with one end open, the first part 111 may be a plate-like structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 may also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0048] In the battery 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 120 are both connected in series and in parallel. The multiple battery cells 120 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 120 is accommodated in the box body 110; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 120 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 body 110. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 120.

[0049] Each battery cell 120 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 120 may be cylindrical, flat, rectangular, or in other shapes.

[0050] like Figure 3 As shown, the battery cell 120 may include a housing, an electrode assembly 123 and an electrode terminal. The housing includes a shell 121 and an end cap 122. The shell 121 has an opening, and the end cap 122 closes the opening to isolate the internal environment of the battery cell 120 from the external environment.

[0051] The shell 121 is a component used to cooperate with the end cap 122 to form the internal environment of the battery cell 120, wherein the formed internal environment can be used to accommodate the electrode assembly 123, the electrolyte and other components. The shell 121 and the end cap 122 can be independent components. The shell 121 can be of various shapes and sizes. Specifically, the shape of the shell 121 can be determined according to the specific shape and size of the electrode assembly 123. The material of the shell 121 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0052] The end cap 122 refers to a component that covers the opening of the shell 121 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the shell 121 to match the shell 121. Optionally, the end cap 122 can be made of a material with a certain hardness and strength, such as an aluminum alloy, so that the end cap 122 is not easily deformed when squeezed and collided, so that the battery cell 120 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap 122. The electrode terminal can be used to electrically connect to the electrode assembly 123 for outputting or inputting electrical energy of the battery cell 120. The material of the end cap 122 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 special restrictions on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 122, and the insulating structure can be used to isolate the electrical connection components in the shell 121 from the end cap 122 to reduce the risk of short circuit. Exemplarily, the insulating structure may be plastic, rubber, or the like.

[0053] The electrode assembly 123 is a component in the battery cell 120 where an electrochemical reaction occurs. One or more electrode assemblies 123 may be included in the housing 121. The electrode assembly 123 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly 123, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the pole ear. The positive pole ear and the negative pole ear may be located at one end of the main body or at both ends of the main body respectively. During the charge and discharge process of the battery 100, the positive active material and the negative active material react with the electrolyte, and the pole ear connects the electrode terminal to form a current loop. In addition, the electrode assembly 123 may be a winding structure or a laminated structure.

[0054] In some embodiments, the battery cell 120 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold value.

[0055] According to some embodiments of the present application, Figure 4 This is a schematic diagram of the structure of the box in this application. Figure 5 for Figure 4 A top view of Figure 6 for Figure 4 Exploded diagram of Figure 7 for Figure 6 The enlarged schematic diagram of point A in the middle. Figure 8 : is a cross-sectional view of the box in this application. Figure 4-Figure 8 As shown, the present application provides a battery device, which includes a box body 10, a heat exchange component 11, a connecting block 12 and a heat exchange joint 13, wherein the box body 10 has a accommodating cavity inside, and the box body 10 includes a first plate; the heat exchange component 11 includes a first heat exchange part 113 and a second heat exchange part 114 that are connected, the first heat exchange part 113 is arranged on the outside of the box body 10, and the second heat exchange part 114 is arranged on the side of the first plate facing the accommodating cavity; the connecting block 12 is arranged on the first heat exchange part 113; the heat exchange joint 13 passes through the connecting block 12 along a first direction and is sealed and connected to the opening 1131 on the first heat exchange part 113, and the heat exchange joint 13 is located on the outside of the connecting block 12 and is welded to the connecting block 12, wherein the first direction is the height direction of the box body 10.

[0056] The first direction in this embodiment is as follows Figure 7 The X-axis direction.

[0057] The welding method in this embodiment can be welding clamps, arc welding, etc. The specific method can be determined according to actual conditions, and this specification embodiment does not limit this.

[0058] The upper side of the box 10 in this embodiment is an open structure, and a receiving cavity is formed inside the box 10, which can be used to accommodate battery cells. The box 10 can be a rectangular parallelepiped, a cylinder, etc., which can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0059] In this embodiment, the heat exchange component 11 can be connected to the first plate inside the box body 10 by bolts, or the heat exchange component 11 can be clamped on the first plate inside the box body 10. The specific details can be determined according to actual conditions, and this specification embodiment does not limit this.

[0060] In the present embodiment, the first heat exchange part 113 and the second heat exchange part 114 may both be water-cooled plates, the first heat exchange part 113 and the second heat exchange part 114 are internally connected, the first heat exchange part 113 and the second heat exchange part 114 may be integrally formed, or the first heat exchange part 113 and the second heat exchange part 114 may be welded together, the specific details may be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0061] The connection block 12 in this embodiment is located outside the box body 10, and the connection block 12 can be welded to the first heat exchange part 113, or the connection block 12 can be bonded to the first heat exchange part 113, which can be determined according to actual conditions and is not limited in this embodiment of the present specification.

[0062] The structure of the heat exchange joint 13 in this embodiment can refer to the existing heat exchange joint, and will not be described in detail here.

[0063] In the technical solution of the embodiment of the present application, after the connection block 12 is fixed to the first heat exchange part 113, the heat exchange joint 13 passes through the connection block 12 and is welded to the opening 1131 on the first heat exchange part 113. At the same time, the heat exchange joint 13 is located outside the connection block 12 and is welded to the connection block 12. In this way, not only can the sealing of the connection between the heat exchange joint 13 and the first heat exchange part 113 be ensured, but also because the connection block 12 is fixed on the heat exchange component 11 and the heat exchange joint 13 is welded to the connection block 12, under the limiting effect of the connection block 12, the stability of the connection between the heat exchange joint 13 and the heat exchange component 11 can be ensured, thereby avoiding the shaking of the heat exchange joint 13 relative to the heat exchange component 11, and effectively improving the sealing of the heat exchange joint 13 during connection. Since the heat exchange joint 13 is sealedly connected to the first heat exchange part 113 and the connection block 12, the reliability of the overall sealing can also be improved.

[0064] According to some embodiments of the present application, Fig.16 Combined with Fig.17 As shown, an insert portion 132 is provided at one end of the heat exchange joint 13 facing the opening 1131 , and a protrusion 133 is circumferentially provided on the side of the heat exchange joint 13 ; the insert portion 132 cooperates with the opening 1131 , and the protrusion 133 covers the opening 1131 .

[0065] The inserting portion 132 in this embodiment is a circular ring structure as a whole, and there is an interference fit between the inserting portion 132 and the opening 1131, so that the sealing between the inserting portion 132 and the opening 1131 can be ensured. Of course, it can be understood that the outer diameter of the inserting portion 132 can also be equal to the inner diameter of the opening 1131, which can be determined according to actual conditions, and the embodiments of this specification are not limited to this.

[0066] During use, after the insertion portion 132 is inserted into the opening 1131, the protrusion 133 abuts against a side of the first heat exchange portion 113 facing the heat exchange joint 13, and at the same time, the protrusion 133 covers the periphery of the opening 1131, thereby improving the sealing between the insertion portion 132 and the opening 1131.

[0067] According to some embodiments of the present application, the protrusion 133 is welded to the first heat exchange portion 113 .

[0068] The welding method in this embodiment can be welding clamps, arc welding, etc. The specific method can be determined according to actual conditions, and this specification embodiment does not limit this.

[0069] In this embodiment, the protrusion 133 is welded to the first heat exchange part 113. Since the protrusion 133 itself covers the periphery of the opening 1131, when the insertion part 132 is inserted into the opening 1131 and the protrusion 133 is welded to the first heat exchange part 113, the sealing between the insertion part 132 and the opening 1131 can be effectively improved.

[0070] According to some embodiments of the present application, Figure 7 As shown, a connecting seat 131 is provided on the heat exchange joint 13; when the heat exchange joint 13 passes through the connecting block 12 along the first direction and is welded to the opening on the first heat exchange part 113, the connecting seat 131 is located outside the connecting block 12 on the side away from the first heat exchange part 113, and the connecting seat 131 is welded to the side of the connecting block 12 away from the first heat exchange part 113.

[0071] The first direction in this embodiment is as follows Figure 7 The X-axis direction.

[0072] In this embodiment, the connection seat 131 and the connection block 12 can be welded together by brazing, arc welding or the like.

[0073] The connection seat 131 in this embodiment can be integrally formed with the heat exchange joint 13, or the connection seat 131 can be snap-connected to the heat exchange joint 13. The specific details can be determined according to actual conditions, and this specification embodiment does not limit this.

[0074] In this embodiment, when the heat exchange joint 13 passes through the connecting block 12 along the X-axis direction and is welded to the opening 1131 on the first heat exchange part 113, at this time, the connecting seat 131 is located on the upper surface of the connecting block 12, and the connecting seat 131 abuts against the connecting block 12, and then the connecting seat 131 and the connecting block 12 can be connected together by bolts, and finally the connecting seat 131 and the connecting block 12 can be welded together by brazing.

[0075] In this embodiment, a connection seat 131 is provided on the heat exchange joint 13 , so that the heat exchange joint 13 can be fixed on the connection block 12 by fixing the connection seat 131 to the connection block 12 .

[0076] According to some embodiments of the present application, Figure 6 Combined with Figure 7As shown, the connecting block 12 includes a profile 124 and a sealing plate 125, wherein the profile 124 has an open structure on both sides along the second direction, and sealing plates 125 are respectively welded on both sides of the profile 124 along the second direction; the sealing plate 125 is used to seal the open side of the profile 124 along the second direction, and the second direction intersects with the first direction.

[0077] In this embodiment, if Figure 7 As shown, the second direction is the Y-axis direction, wherein the angle between the X-axis and the Y-axis may be 80°, 85°, 90°, etc. This embodiment is described by taking the X-axis and the Y-axis as being perpendicular to each other.

[0078] refer to Figure 8 As shown, in this embodiment, the profile 124 includes an upper side 1243, a lower side 1244 and a plate connected between the upper side 1243 and the lower side 1244, which is not marked in the figure, wherein the lower side 1244 is welded to the first heat exchange part 113, and the upper side 1243 is welded to the connecting seat 131.

[0079] Since the sealing plate 125 is sealed and welded to the opening side of the profile 124 along the second direction, the sealing of the integral connection block can be ensured.

[0080] According to some embodiments of the present application, Figure 6 Combined with Figure 7 As shown, the profile 124 is welded to the first heat exchange part 113 on the side facing the first heat exchange part 113, the heat exchange joint 13 passes through the profile 124 along the first direction and is welded to the opening, the connecting seat 131 is located outside the side of the profile 124 away from the first heat exchange part 113, and the connecting seat 131 is welded to the side of the profile 124 away from the first heat exchange part 113.

[0081] The heat exchange joint 13 in this embodiment passes through the upper side 1243 and the lower side 1244 in sequence along the X-axis direction and is welded to the opening 1131 on the first heat exchange part 113 .

[0082] A sealing plate 125 is welded to both sides of the profile 124 in the Y-axis direction. At this time, the lower side 1244 of the profile 124 is welded to the first heat exchange part 113, and the interior of the profile 124 is a closed structure as a whole. At the same time, the profile 124 and the first heat exchange part 113 are also a closed structure. In this way, even if the sealing structure formed by the opening 1131 on the heat exchange joint 13 and the first heat exchange part 113 fails, the profile 124 can wrap the welding part between the heat exchange joint 13 and the first heat exchange part 113 after welding, and the profile 124 and the sealing plate 125 are also welded together. In this way, under the welding action of the profile 124, the sealing plate 125 and the first heat exchange part 113, the heat exchange joint 13 and the first heat exchange part 113 are still in a sealed environment, which effectively improves the sealing reliability.

[0083] It should be noted that the structure of the above-mentioned connection block is only an example. In other alternative solutions, other structures may also be adopted, for example, the connection block is a closed structure as a whole, the interior of the connection block is a hollow structure, etc. The present application does not impose any special restrictions on the specific structure of the connection block, as long as the above-mentioned structure can achieve the purpose of the present application.

[0084] According to some embodiments of the present application, Fig. 9 As shown, a first recess 1011 is provided on the first side plate 101 of the box body 10 facing the profile 124 ; when the profile 124 is welded to the first heat exchange portion 113 , the profile 124 is at least partially located in the first recess 1011 .

[0085] In this embodiment, when the first heat exchange part 113 is installed on the outside of the box body 10, a slot is formed between the first heat exchange part 113 and the first inner recess 1011 on the first side plate 101, and the side of the profile 124 facing the first side plate 101 can be inserted into the corresponding slot, so that it is convenient to fix the profile 124 on the first side plate 101.

[0086] According to some embodiments of the present application, Figure 7 As shown, a plug hole 1241 is provided on the profile 124 along the first direction, and the protrusion 133 passes through the plug hole 1241 along the first direction and is welded to the first heat exchange part 113 . Meanwhile, the connection seat 131 covers the plug hole 1241 .

[0087] In this embodiment, a through insertion hole 1241 is provided in the profile 124 along the X-axis direction. In this way, it is not only convenient for the heat exchange joint 13 to pass through the profile 124, but also when the heat exchange joint 13 passes through the profile 124, it is combined with Figure 8 As shown, the connection seat 131 can cover the socket 1241 located on the upper side 1243 of the profile 124. When the connection seat 131 is welded to the upper side 1243, the connection seat 131 and the profile 124 form a sealing structure, thereby sealing the gap between the heat exchange joint 13 and the socket 1241.

[0088] According to some embodiments of the present application, Figure 7 As shown, a first extending portion 1242 is provided on the profile 124 , and a first connecting hole 12421 is provided on the first extending portion 1242 .

[0089] In this embodiment, the first extension portion 1242 may be an extension plate. The first extension portion 1242 may be integrally formed with the profile 124 , or the first extension portion 1242 may be threadedly connected to the profile 124 .

[0090] In this embodiment, a first connecting hole 12421 is provided on the first extending portion 1242 along the X-axis direction, so that the profile 124 can be connected to other components by passing a bolt through the first connecting hole 12421 .

[0091] According to some embodiments of the present application, Figure 7 As shown, the battery device further includes a cap 14 , which is disposed on the heat exchange joint 13 and is used to seal the heat exchange joint 13 .

[0092] In this embodiment, the cap 14 can be made of rubber. The cap 14 itself is flexible to prevent the cap 14 from being buckled on the heat exchange joint 13 and causing damage to the heat exchange joint 13 due to collision.

[0093] When the heat exchange joint 13 is not in use, the cap 14 is buckled onto the heat exchange joint 13 to seal the heat exchange joint 13 , thereby preventing debris from entering the heat exchange assembly 11 through the heat exchange joint 13 .

[0094] According to some embodiments of the present application, Fig.10 As shown, an elastic column 141 is disposed inside the cap 14 ; when the cap 14 is disposed on the heat exchange joint 13 , the elastic column 141 is located in the water inlet channel on the heat exchange joint 13 .

[0095] The elastic column 141 in this embodiment can be formed by rubber, polypropylene, polyimide material, etc. The specific material can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0096] During use, after the cap 14 is buckled onto the heat exchange joint 13 , the elastic column 141 is inserted into the water inlet channel on the heat exchange joint 13 , so that the cap 14 can be stably located on the heat exchange joint 13 .

[0097] According to some embodiments of the present application, the elastic column 141 is interference fit with the water inlet channel, so that the elastic column 141 can be stably located in the water inlet channel, thereby ensuring that the cap 14 is stably located on the heat exchange joint 13 .

[0098] According to some embodiments of the present application, Fig.11 As shown, the battery device further includes a side beam 15 , which is disposed on the outer side of the second side plate 102 of the box body 10 .

[0099] like Figure 4 As shown, the box body 10 in this embodiment can be formed by a first side panel 101, a third side panel 104, two second side panels 102 and a first panel, wherein the two second side panels 102 are arranged in parallel, and the first side panel 101 and the third side panel 104 are arranged in parallel. Of course, it can be understood that the box body 10 can also include other structures, such as flanges, etc., which are not limited here.

[0100] In this embodiment, the side beam 15 may be provided on the first side plate 101 , the second side plate 102 or the third side plate 104 . For the convenience of description, the following description is made on the assumption that the side beam 15 is provided on the second side plate 102 .

[0101] The side beam 15 in this embodiment can be welded to the outer side of the second side plate 102, or the side beam 15 and the second side plate 102 can be integrally formed. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0102] Since the side beam 15 is provided on the second side plate 102 , the box body 10 can be conveniently connected to the entire vehicle through the side beam 15 .

[0103] The side beam 15 in this embodiment can be integrally formed with the second side plate 102. In this way, the installation steps can be reduced and the installation efficiency can be improved.

[0104] like Fig.11 As shown, the interior of the side beam 15 is a hollow structure, and a first reinforcing rib 151 is provided inside the side beam 15 .

[0105] In this embodiment, the first reinforcing rib 151 can be formed integrally with the side beam 15 , or the first reinforcing rib 151 can be welded inside the side beam 15 , so that the strength of the side beam 15 can be improved.

[0106] like Fig.11 As shown, the side beam 15 is provided with a second connecting hole 152. In this way, the side beam 15 can be quickly connected to other components by passing a bolt or a pin through the second connecting hole 152.

[0107] like Fig.11 As shown, a support plate 153 is provided between the bottom surface of the side beam 15 and the second side plate 102 .

[0108] The support plate 153 in this embodiment can be welded between the side beam 15 and the second side plate 102, or the support plate 153, the side beam 15 and the second side plate 102 can be integrally formed. The specific details can be determined according to actual conditions, and this specification embodiment does not limit this.

[0109] Since the support plate 153 is disposed between the bottom surface of the side beam 15 and the second side plate 102 , the strength of the connection between the side beam 15 and the second side plate 102 can be improved.

[0110] According to some embodiments of the present application, Figure 6As shown, the second side plate 102 is provided with an air guide hole 1021, which is configured to connect the inside and outside of the box body 10. In this way, when the battery cell in the box body 10 has thermal runaway, the gas will be quickly discharged to the outside through the air guide hole 1021.

[0111] like Fig.12 Combined with Fig.13 As shown, the interior of the second side plate 102 is a hollow structure, and a second reinforcing rib 103 is disposed inside the second side plate 102 .

[0112] In this embodiment, the second reinforcing rib 103 can be integrally formed with the second side plate 102 , or the second reinforcing rib 103 can be welded inside the second side plate 102 , so that the strength of the second side plate 102 can be improved.

[0113] Of course, it is understandable that in this embodiment, reinforcing ribs may be further provided inside the first side plate 101 and the third side plate 104 . The specific reinforcement ribs may be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0114] According to some embodiments of the present application, Fig.14 Combined with Fig.15 As shown, a second extension portion 115 is provided around the second heat exchange portion 114, and a second inner recess 1041 is provided on the side of the box body 10 facing the second heat exchange portion 114; when the second heat exchange portion 114 is provided on the first plate inside the box body 10, the second extension portion 115 is located in the second inner recess 1041.

[0115] In this embodiment, a second recess 1041 may be provided on the side of the third side plate 104 of the box body 10 facing the second heat exchange part 114, or a second recess 1041 may be provided on both the side of the first side plate 101 and the side of the second side plate 102 facing the second heat exchange part 114. The specific details may be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0116] In this embodiment, the second extension portion 115 may be an extension plate.

[0117] During installation, when the second heat exchange part 114 is located in the housing 10 , the second extension part 115 on the second heat exchange part 114 is inserted into the second inner recess 1041 , so that the second heat exchange part 114 and the housing 10 are more firmly connected.

[0118] According to some embodiments of the present application, the first plate is a bottom plate, wherein the second heat exchange portion 114 is disposed on a side of the bottom plate facing the accommodating cavity.

[0119] In this embodiment, the second heat exchange part 114 can be fixed to the side of the bottom plate facing the accommodating cavity by bolts, buckles, etc.

[0120] The present application also provides an electrical device, comprising a battery device as described in any one of the embodiments of the present application.

[0121] The specific structure of the battery device in this embodiment refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in this electrical device, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0122] 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: include: A box body having a receiving cavity therein, wherein the box body comprises a first plate; A side beam, the side beam being arranged on the outer side of the second side plate of the box body; the second side plate is provided with an air guide hole, the air guide hole being configured to connect the inside and the outside of the box body; A heat exchange component, the heat exchange component comprising a first heat exchange part and a second heat exchange part that are connected, the first heat exchange part is arranged outside the box, and the second heat exchange part is arranged on a side of the first plate facing the accommodating cavity; A connecting block, the connecting block being arranged on the first heat exchange part; A heat exchange joint, wherein the heat exchange joint passes through the connection block along a first direction and is sealedly connected to the opening on the first heat exchange part, and the heat exchange joint is located outside the connection block and is welded to the connection block, wherein the first direction is the height direction of the box body.

2. The battery device according to claim 1, characterized in that: An insert portion is provided at one end of the heat exchange joint facing the opening, and a protrusion is provided circumferentially on the side surface of the heat exchange joint; The inserting portion cooperates with the opening, and the protruding portion covers the opening.

3. The battery device according to claim 2, characterized in that: The protruding portion is welded to the first heat exchange portion.

4. The battery device according to claim 2, characterized in that: The heat exchange joint is provided with a connection seat; The connection seat is located outside the side of the connection block away from the first heat exchange part, and the connection seat is welded to the side of the connection block away from the first heat exchange part.

5. The battery device according to claim 4, characterized in that: The connecting block includes a profile and a sealing plate. The profile has open structures on both sides along the second direction. The sealing plates are respectively welded to the profile on both sides along the second direction. The sealing plates are used to seal the open sides of the profile along the second direction. The second direction intersects with the first direction.

6. The battery device according to claim 5, characterized in that: The side of the profile facing the first heat exchange part is welded to the first heat exchange part, the heat exchange joint passes through the profile along the first direction and is welded to the opening, the connecting seat is located outside the side of the profile away from the first heat exchange part, and the connecting seat is welded to the side of the profile away from the first heat exchange part.

7. The battery device according to claim 5, characterized in that: A first concave portion is provided on a side of the first side plate of the box body facing the profile; The profile is welded to the first heat exchange portion, and at least a portion of the profile is located in the first recessed portion.

8. The battery device according to claim 5, characterized in that: The profile is provided with an insertion hole along the first direction, and the protrusion passes through the insertion hole along the first direction and is welded to the first heat exchange part; The connecting socket covers the plug hole.

9. The battery device according to claim 5, characterized in that: The profile is provided with a first extension portion, and the first extension portion is provided with a first connecting hole.

10. The battery device according to any one of claims 1 to 9, characterized in that: The battery device further comprises a cap, which is arranged on the heat exchange joint and is used for sealing the heat exchange joint.

11. The battery device according to claim 10, characterized in that: An elastic column is arranged inside the cap; The elastic column is located in the water inlet channel on the heat exchange joint.

12. The battery device according to claim 11, characterized in that: The elastic column is interference fit with the water inlet channel.

13. The battery device according to any one of claims 1 to 9, characterized in that: A second extending portion is disposed around the second heat exchange portion, a second inner recess is disposed on a side of the box body facing the second heat exchange portion, and the second extending portion is located in the second inner recess.

14. The battery device according to any one of claims 1 to 9, characterized in that: The first plate is a bottom plate, and the second heat exchange part is arranged on a side of the bottom plate facing the accommodating cavity.

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

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