Battery devices and power-consuming devices

Abstract

The present application discloses a battery device and an electrical device, wherein the battery device includes: a box body having a storage cavity inside, the box body including a first plate; a heat exchange assembly, the heat exchange assembly including 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 storage cavity; a connecting block, the connecting block is arranged on the first heat exchange part; a heat exchange joint, the heat exchange joint passes through the connecting block in a first direction and is sealed with the opening on the first heat exchange part, the heat exchange joint is located on the outside of the connecting block and is welded to the connecting block. The above-mentioned solution provided by the present application can not only ensure the sealing of the connection between the heat exchange joint and the first heat exchange part, but also ensure the sealing of the heat exchange joint and the connecting block, effectively improving the sealing of the heat exchange joint during connection. Since the heat exchange joint is sealedly connected to the first heat exchange part and the connecting block, the sealing reliability can also 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 housed in the lower box, and an upper cover with a sealing cover disposed on the lower box. In order to ensure that the battery module has an optimal 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] To solve the above technical problems, in a first aspect, the present application proposes a battery device, comprising:

[0006] A box body has a receiving cavity therein, and the box body includes a first plate;

[0007] a heat exchange assembly, the heat exchange assembly comprising a first heat exchange portion and a second heat exchange portion in communication, the first heat exchange portion being disposed outside the box, and the second heat exchange portion being disposed on a side of the first plate facing the accommodating cavity;

[0008] a connecting block, the connecting block being arranged on the first heat exchange part;

[0009] A heat exchange joint, which passes through the connecting block along a first direction and is sealedly connected to the opening on the first heat exchange part. The heat exchange joint is located outside the connecting block and is welded to the connecting block, wherein the first direction is the height direction of the box body.

[0010] In the technical solution of the embodiment of the present application, after the connecting block is fixed to the first heat exchange unit, the heat exchange joint passes through the connecting block and is sealedly connected to the opening in the first heat exchange unit. At the same time, the heat exchange joint is located on the outside of the connecting block and is welded to the connecting block. This ensures not only the sealing of the connection between the heat exchange joint and the first heat exchange unit, but also the sealing of the heat exchange joint and the connecting block, effectively improving the sealing of the heat exchange joint during connection. Since the heat exchange joint is sealed to the first heat exchange unit and the connecting block, this also improves the sealing reliability.

[0011] 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;

[0012] The inserting portion cooperates with the opening, and the protruding portion covers the opening. In this way, when the inserting portion is inserted into the opening, the protruding portion can cover the opening, thereby improving the sealing performance between the inserting portion and the opening.

[0013] In some embodiments, the protrusion is welded to the first heat exchange portion, thereby effectively improving the sealing between the protrusion and the first heat exchange portion and ensuring the sealing between the insertion portion and the opening.

[0014] In some embodiments, a connection seat is provided on the heat exchange joint;

[0015] The connecting seat is located outside the connecting block on a side facing away from the first heat exchange portion, and is welded to the side of the connecting block facing away from the first heat exchange portion. In this way, the connecting seat can be used to easily fix the heat exchange joint to the connecting block before welding.

[0016] In some embodiments, the connection block includes a profile and a sealing plate. The profile has openings on both sides along the second direction. The sealing plates are welded to both sides of the profile along the second direction. The sealing plates are used to seal the openings along the second direction. The second direction intersects the first direction. This ensures that the connection block is completely sealed.

[0017] In some embodiments, 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 facing away from the first heat exchange part, and the connecting seat is welded to the side of the profile facing away from the first heat exchange part.

[0018] Because the profile is welded to the first heat exchange section, and sealing plates are welded to both sides of the profile along the second direction, the profile interior is completely sealed, and the space between the profile and the first heat exchange section is also sealed. This ensures that even if the seal formed between the heat exchange joint and the opening in the first heat exchange section fails, the welded connection between the profile, sealing plates, and first heat exchange section ensures a sealed environment between the heat exchange joint and the first heat exchange section, effectively improving sealing reliability.

[0019] In some embodiments, a first concave portion is provided on a side of the first side plate of the box body facing the profile;

[0020] 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, so that the profile can be easily fixed to the first side plate.

[0021] In some embodiments, the profile is provided with an insertion hole along the first direction, and the protrusion is passed through the insertion hole along the first direction and then welded to the first heat exchange component; the connecting seat covers the insertion hole. This not only facilitates the passage of the heat exchange connector through the profile, but also allows the connecting seat to cover the insertion hole. When the connecting seat is welded to the side of the profile facing away from the first heat exchange component, the connecting seat and the profile form a sealed structure, thereby sealing the gap between the heat exchange connector and the insertion hole.

[0022] 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 as to facilitate connection of the profile with other components.

[0023] In some embodiments, the battery device further includes a cap, which is disposed on the heat exchange joint and is used to seal the heat exchange joint, thereby facilitating the sealing of the heat exchange joint and preventing debris from entering the first heat exchange portion through the heat exchange joint.

[0024] In some embodiments, an elastic column is provided inside the cap;

[0025] When the cap is arranged 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.

[0026] In some embodiments, the elastic column is interference-fitted with the water inlet channel, so that the elastic column can be stably positioned in the water inlet channel, thereby ensuring that the cap is stably positioned on the heat exchange joint.

[0027] In some embodiments, the battery device further includes a side beam;

[0028] The side beam is arranged on the outer side of the second side plate of the box body, so that the box body is conveniently connected to the whole vehicle.

[0029] In some embodiments, an air guide hole is provided on the second side panel, and the air guide hole is configured to connect the interior and the exterior of the box.

[0030] 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.

[0031] In some embodiments, a second extension portion is provided on the periphery of the second heat exchange portion, and a second recessed portion is provided on a side of the box body facing the second heat exchange portion; the second extension portion is located in the second recessed portion.

[0032] In this way, the second heat exchange part can be more firmly connected to the bottom surface of the box.

[0033] 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.

[0034] 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.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0037] Figure 1 A schematic diagram of the structure of an electrical device provided in some embodiments of the present application;

[0038] Figure 2 A schematic diagram of the structure of a battery provided in some embodiments of the present application;

[0039] Figure 3 A schematic structural diagram of a battery cell provided in some embodiments of the present application;

[0040] Figure 4 A schematic structural diagram of a box provided in some embodiments of the present application;

[0041] Figure 5 for Figure 4 A top view of

[0042] Figure 6 for Figure 4 Exploded diagram;

[0043] Figure 7 for Figure 6 A magnified schematic diagram of point A in the middle;

[0044] Figure 8 A cross-sectional view of a box provided in some embodiments of the present application;

[0045] Figure 9 A schematic diagram of the connection structure between the profile and the box provided in some embodiments of the present application;

[0046] Figure 10 A schematic structural diagram of a cap provided in some embodiments of the present application;

[0047] Figure 11 for Figure 6 A magnified schematic diagram of point B in the middle;

[0048] Figure 12 Another structural schematic diagram of a box provided in some embodiments of the present application;

[0049] Figure 13 A schematic diagram of a second side panel provided in some embodiments of the present application;

[0050] Figure 14 A cross-sectional view of a box provided in some embodiments of the present application at another viewing angle;

[0051] Figure 15 for Figure 14 The enlarged schematic diagram of point C in the middle;

[0052] Figure 16 A schematic diagram of the connection structure between the connecting base and the first heat exchange part provided in some embodiments of the present application;

[0053] Figure 17 Schematic diagram of the connection socket provided for some embodiments of the present application.

[0054] The accompanying drawings in the specific implementation manner are as follows:

[0055] 1000. Vehicle;

[0056] 100, battery; 200, controller; 300, motor;

[0057] 110, box body; 111, first part; 112, second part; 120, battery cell; 121, housing; 122, end cap; 123, electrode assembly;

[0058] 10. Box body; 101. First side panel; 1011. First recessed portion; 102. Second side panel; 1021. Air guide hole; 103. Second reinforcing rib; 104. Third side panel; 1041. Second recessed portion; 11. Heat exchange assembly; 113. First heat exchange portion; 1131. Opening; 114. Second heat exchange portion; 115. Second extension portion; 12. Connecting block; 124. Profile; 1241. Insertion hole; 1242. First extension portion; 12421. First connecting hole; 1243. Upper side; 1244. Lower side; 125. Closing plate; 13. Heat exchange joint; 131. Connecting seat; 132. Insertion portion; 133. Protrusion; 14. Cover cap; 141. Elastic column; 15. Side beam; 151. First reinforcing rib; 152. Second connecting hole; 153. Support plate. DETAILED DESCRIPTION

[0059] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art 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" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0061] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0062] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0063] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0064] 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).

[0065] 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., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0067] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0068] In the related art, a battery generally includes a lower box, a battery module housed in the lower box, and an upper cover with a sealing cover disposed on the lower box. In order to ensure that the battery module has an optimal operating temperature range, a water cooling plate is generally installed in the lower box.

[0069] In the cooling system of power batteries, the water-cooling joint and the water-cooling plate are mostly connected by threads. This 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.

[0070] 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 component, 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 component 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 the first direction and is sealed with the opening on the first heat exchange part, and the heat exchange joint is located outside the connecting block and welded to the connecting block, wherein the first direction is the height direction of the box body.

[0071] In the technical solution of the embodiment of the present application, after the connecting block is fixed to the first heat exchange part, the heat exchange joint passes through the connecting block and is sealedly connected to the opening on the first heat exchange part. At the same time, the heat exchange joint is located on the outside of the connecting block and is welded to the connecting 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 connecting block is fixed to the first heat exchange part and the heat exchange joint is welded to the connecting block, the stability of the connection between the heat exchange joint and the heat exchange component can be ensured under the limiting effect of the connecting block, thereby preventing the heat exchange joint from shaking relative to the heat exchange component, effectively improving the sealing of the heat exchange joint during connection. Since the heat exchange joint is sealedly connected to the first heat exchange part and the connecting block, the reliability of the overall seal can also be improved.

[0072] A battery, as used herein, refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery referred to herein may include a battery pack. Batteries can serve as power sources or power systems for electrical devices, thereby improving overall battery performance and facilitating battery promotion.

[0073] The aforementioned electrical devices may include, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0074] 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.

[0075] Please refer to Figure 1 , Figure 1A schematic structural diagram 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. 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. 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 serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0076] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also 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.

[0077] Please refer to Figure 2 , Figure 2 An 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, with the battery cell 120 being housed within the box body 110. 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 can include a first portion 111 and a second portion 112, the first portion 111 and the second portion 112 overlapping each other, and the first portion 111 and the second portion 112 jointly define a storage space for accommodating the battery cell 120. The second portion 112 can be a hollow structure with one end open, and the first portion 111 can be a plate-like structure, with the first portion 111 overlapping the open side of the second portion 112, so that the first portion 111 and the second portion 112 jointly define a storage space; the first portion 111 and the second portion 112 can also be hollow structures with one side open, with the open side of the first portion 111 overlapping the open side of the second portion 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.

[0078] 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 hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 120. The multiple battery cells 120 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 120 may be housed within the box body 110. Of course, the battery 100 may also be formed by first connecting multiple battery cells 120 in series, in parallel, or in a hybrid connection to form a battery module, and then the multiple battery modules may be connected in series, in parallel, or in a hybrid connection to form an entire battery cell, and then housed within the box body 110. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 120.

[0079] Each battery cell 120 may be a secondary battery or a primary battery, 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.

[0080] like Figure 3 As shown, the battery cell 120 may include a housing, an electrode assembly 123 and electrode terminals. 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.

[0081] The housing 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, electrolyte, and other components. The housing 121 and the end cap 122 can be independent components. The housing 121 can be of various shapes and sizes. Specifically, the shape of the housing 121 can be determined according to the specific shape and size of the electrode assembly 123. The housing 121 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0082] The end cap 122 is a component that covers the opening of the housing 121 to isolate the internal environment of the battery cell 120 from the external environment. The shape of the end cap 122 can be adapted to the shape of the housing 121 to fit the housing 121. Optionally, the end cap 122 can be made of a material with a certain degree of hardness and strength, such as an aluminum alloy. This prevents the end cap 122 from deforming when subjected to compression or collision, thereby enhancing the structural strength and reliability of the battery cell 120. Functional components such as electrode terminals can be provided on the end cap 122. The electrode terminals can be used to electrically connect to the electrode assembly 123 to transmit or receive electrical energy from the battery cell 120. The end cap 122 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this is not particularly limited in this embodiment of the present application. In some embodiments, an insulating structure can be provided on the inside of the end cap 122 to isolate the electrical components within the housing 121 from the end cap 122 to reduce the risk of short circuits. For example, the insulating structure may be plastic, rubber, or the like.

[0083] The electrode assembly 123 is the component in the battery cell 120 where the electrochemical reaction occurs. One or more electrode assemblies 123 may be contained within 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. The separator is used to separate the positive electrode sheet and the negative electrode sheet to prevent internal 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 tab. The positive electrode tab and the negative electrode tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop. In addition, the electrode assembly 123 may be a wound structure or a laminated structure.

[0084] 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.

[0085] 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, Figure 7 for Figure 6 The enlarged schematic diagram of point A in the middle, Figure 8 This is a cross-sectional view of the box in this application. Figure 4-Figure 8As 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 the first direction and is sealed with 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 welded to the connecting block 12, wherein the first direction is the height direction of the box body 10.

[0086] The first direction in this embodiment is as follows Figure 7 The X-axis direction in .

[0087] 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 embodiment of the specification does not limit this.

[0088] The upper side of the box body 10 in this embodiment is an open structure, and the interior of the box body 10 forms a receiving cavity, which can be used to accommodate battery cells. The box body 10 can be a rectangular parallelepiped, a cylinder, etc. The specific shape can be determined according to actual conditions and is not limited in this embodiment of the present invention.

[0089] 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 are not limited to this embodiment of the present specification.

[0090] In this embodiment, the first heat exchange part 113 and the second heat exchange part 114 can 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 can be integrally formed, or the first heat exchange part 113 and the second heat exchange part 114 can be welded together. The specific details can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0091] The connection block 12 in this embodiment is located outside the box body 10. The connection block 12 can be welded to the first heat exchange part 113, or the connection block 12 can be adhered to the first heat exchange part 113. The specific method can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0092] The structure of the heat exchange joint 13 in this embodiment can refer to the existing heat exchange joint, and will not be described again here.

[0093] In the technical solution of the embodiment of the present application, after the connecting block 12 is fixed to the first heat exchange part 113, the heat exchange joint 13 passes through the connecting 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 connecting block 12 and is welded to the connecting 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 connecting block 12 is fixed to the heat exchange component 11 and the heat exchange joint 13 is welded to the connecting block 12, under the limiting effect of the connecting block 12, the stability of the connection between the heat exchange joint 13 and the heat exchange component 11 can be ensured, thereby preventing the heat exchange joint 13 from shaking relative to the heat exchange component 11, effectively improving the sealing of the heat exchange joint 13 during connection. Since the heat exchange joint 13 is sealed with the first heat exchange part 113 and the connecting block 12, the reliability of the overall seal can also be improved.

[0094] According to some embodiments of the present application, Figure 16 Combined with Figure 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 surface of the heat exchange joint 13 ; the insert portion 132 cooperates with the opening 1131 , and the protrusion 133 covers the opening 1131 .

[0095] In this embodiment, the insert portion 132 is an entire ring structure, and an interference fit is formed between the insert portion 132 and the opening 1131, thereby ensuring a tight seal between the insert portion 132 and the opening 1131. Of course, it is understood that the outer diameter of the insert portion 132 may also be equal to the inner diameter of the opening 1131, and the specific diameter may be determined according to actual conditions, and this embodiment of the present specification is not limited thereto.

[0096] During use, after the insertion portion 132 is inserted into the opening 1131, the protrusion 133 abuts against the side of the first heat exchange portion 113 facing the heat exchange joint 13. 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.

[0097] According to some embodiments of the present application, the protrusion 133 is welded to the first heat exchange portion 113 .

[0098] 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 embodiment of the specification does not limit this.

[0099] 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.

[0100] 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.

[0101] The first direction in this embodiment is as follows Figure 7 The X-axis direction in .

[0102] In this embodiment, the connection seat 131 and the connection block 12 can be welded together by brazing, arc welding, or the like.

[0103] The connection seat 131 in this embodiment can be integrally formed with the heat exchange joint 13, or the connection seat 131 can be snapped onto the heat exchange joint 13. The specific details can be determined according to actual conditions and are not limited in this embodiment of the present specification.

[0104] 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 is in contact with the connecting block 12. 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.

[0105] In this embodiment, a connecting seat 131 is provided on the heat exchange joint 13 . Thus, the heat exchange joint 13 can be fixed to the connecting block 12 by fixing the connecting seat 131 to the connecting block 12 .

[0106] According to some embodiments of the present application, Figure 6 Combined with Figure 7 As 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 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.

[0107] In this embodiment, if Figure 7As shown, the second direction is the Y-axis direction, wherein the angle between the X-axis and the Y-axis can be 80°, 85°, 90°, etc. This embodiment is described by taking the X-axis and the Y-axis as perpendicular to each other as an example.

[0108] 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.

[0109] Since the sealing plate 125 is sealed and welded to the open side of the profile 124 along the second direction, the sealing of the entire connecting block can be ensured.

[0110] 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.

[0111] 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 then welded to the opening 1131 on the first heat exchange portion 113 .

[0112] The profile 124 is welded with a sealing plate 125 on both sides 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 space between the profile 124 and the first heat exchange part 113 is also a closed structure. In this way, even if the sealing structure formed by the heat exchange joint 13 and the opening 1131 on the first heat exchange part 113 fails, the profile 124 and the first heat exchange part 113 can wrap the welding part between the heat exchange joint 13 and the first heat exchange part 113 after being welded, 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 space between the heat exchange joint 13 and the first heat exchange part 113 is still in a sealed environment, which effectively improves the sealing reliability.

[0113] It should be noted that the above-mentioned structure of the connecting block is merely an example. In other alternative solutions, other structures may also be adopted, for example, the connecting block may be a closed structure as a whole, or the interior of the connecting block may be a hollow structure, etc. This application does not impose any particular restrictions on the specific structure of the connecting block, as long as the above-mentioned structure can achieve the purpose of this application.

[0114] According to some embodiments of the present application, Figure 9 As shown, a first recessed portion 1011 is provided on the side of the first side plate 101 on 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 recessed portion 1011 .

[0115] 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 panel 101, and the side of the profile 124 facing the first side panel 101 can be inserted into the corresponding slot, so that the profile 124 can be easily fixed on the first side panel 101.

[0116] 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 . At the same time, the connecting seat 131 covers the plug hole 1241 .

[0117] 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 the heat exchange joint 13 to pass through the profile 124. Figure 8 As shown, the connecting seat 131 can cover the socket 1241 located on the upper side 1243 of the profile 124. When the connecting seat 131 is welded to the upper side 1243, the connecting seat 131 and the profile 124 form a sealing structure, thereby sealing the gap between the heat exchange joint 13 and the socket 1241.

[0118] According to some embodiments of the present application, Figure 7 As shown, the profile 124 is provided with a first extension portion 1242 , and the first extension portion 1242 is provided with a first connection hole 12421 .

[0119] 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 .

[0120] In this embodiment, a first connection hole 12421 is provided on the first extension portion 1242 along the X-axis direction. In this way, the profile 124 can be connected to other components by passing a bolt through the first connection hole 12421 .

[0121] 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 to seal the heat exchange joint 13 .

[0122] In this embodiment, the cap 14 can be made of rubber. The cap 14 itself is flexible, which prevents the cap 14 from being buckled onto the heat exchange joint 13 and causing damage to the heat exchange joint 13 due to collision.

[0123] When the heat exchange joint 13 is not in use, the cap 14 is fastened 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 .

[0124] According to some embodiments of the present application, Figure 10 As shown, an elastic column 141 is provided inside the cap 14 ; when the cap 14 is provided on the heat exchange joint 13 , the elastic column 141 is located in the water inlet channel on the heat exchange joint 13 .

[0125] The elastic column 141 in this embodiment can be formed of rubber, polypropylene, polyimide, etc. The specific material can be determined according to actual conditions and is not limited in this embodiment of the present specification.

[0126] 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 , thereby allowing the cap 14 to be stably positioned on the heat exchange joint 13 .

[0127] According to some embodiments of the present application, the elastic column 141 is interference-fitted 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.

[0128] According to some embodiments of the present application, Figure 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 .

[0129] 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.

[0130] In this embodiment, the side beam 15 may be provided on the first side panel 101 , the second side panel 102 or the third side panel 104 . For the sake of convenience, the following description will be made on the assumption that the side beam 15 is provided on the second side panel 102 .

[0131] 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 configuration can be determined based on actual conditions and is not limited in this specification.

[0132] 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 .

[0133] 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.

[0134] like Figure 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 .

[0135] In this embodiment, the first reinforcing rib 151 can be integrally formed with the side beam 15 , or the first reinforcing rib 151 can be welded inside the side beam 15 , thereby improving the strength of the side beam 15 .

[0136] like Figure 11 As shown, the side beam 15 is provided with a second connecting hole 152. Like this, by passing the second connecting hole 152 through a bolt or a pin, the side beam 15 can be quickly connected to other components.

[0137] like Figure 11 As shown, a support plate 153 is provided between the bottom surface of the side beam 15 and the second side plate 102 .

[0138] 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 are not limited in this embodiment of the present specification.

[0139] Since the support plate 153 is provided 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.

[0140] According to some embodiments of the present application, Figure 6 As 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 cells in the box body 10 experience thermal runaway, the gas will be quickly discharged to the outside through the air guide hole 1021.

[0141] like Figure 12 Combined with Figure 13 As shown, the interior of the second side plate 102 is a hollow structure, and a second reinforcing rib 103 is provided inside the second side plate 102 .

[0142] 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 , thereby improving the strength of the second side plate 102 .

[0143] Of course, it is understandable that in this embodiment, reinforcing ribs may be further provided inside the first side panel 101 and the third side panel 104 . The specific reinforcement ribs may be determined based on actual conditions, and this embodiment of the specification does not limit this.

[0144] According to some embodiments of the present application, Figure 14 Combined with Figure 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.

[0145] In this embodiment, a second recessed portion 1041 may be provided on the side of the third side plate 104 of the box body 10 facing the second heat exchange portion 114, or a second recessed portion 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 portion 114. The specific recessed portion 1041 may be determined based on actual conditions and is not limited in this embodiment of the present specification.

[0146] In this embodiment, the second extension portion 115 may be an extension plate.

[0147] 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 , thereby making the connection between the second heat exchange part 114 and the housing 10 more secure.

[0148] 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.

[0149] In this embodiment, the second heat exchange portion 114 can be fixed to the side of the bottom plate facing the accommodating cavity by means of bolts, snaps, etc.

[0150] The present application also provides an electrical device, comprising a battery device as described in any one of the embodiments of the present application.

[0151] The specific structure of the battery device in this embodiment refers to the above embodiments. 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.

[0152] 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions 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 (10) has a receiving cavity therein, and the box body (10) includes a first plate; A side beam (15), the side beam (15) being arranged on the outer side of the second side plate (102) on the box body (10); an air guide hole (1021) being provided on the second side plate (102), the air guide hole (1021) being configured to connect the interior and exterior of the box body (10); A heat exchange assembly (11), the heat exchange assembly (11) comprising a first heat exchange portion (113) and a second heat exchange portion (114) that are connected to each other, the first heat exchange portion (113) being arranged outside the box (10), and the second heat exchange portion (114) being arranged on a side of the first plate facing the accommodating cavity; A second extension portion (115) is provided around the second heat exchange portion (114); a second inner recess (1041) is provided on a side of the box body (10) facing the second heat exchange portion (114); and the second extension portion (115) is located in the second inner recess (1041); A connecting block (12), the connecting block (12) comprising a profile (124), the profile (124) comprising an upper side (1243) and a lower side (1244), the lower side (1244) being welded to the first heat exchange portion (113); A heat exchange joint (13), wherein the heat exchange joint (13) passes through the connection block (12) along a first direction and is sealedly connected to the opening (1131) on the first heat exchange part (113), and a connection seat (131) is provided on the heat exchange joint (13); the connection seat (131) is located outside the connection block (12) on a side facing away from the first heat exchange part (113), and the connection seat (131) is welded to a side of the upper side (1243) facing away from the first heat exchange part (113); wherein the first direction is the height direction of the box body (10).

2. The battery device according to claim 1, wherein: An insert portion (132) is provided at one end of the heat exchange joint (13) facing the opening (1131), and a protrusion (133) is provided on the side surface of the heat exchange joint (13) in a circumferential direction. The inserting portion (132) cooperates with the opening (1131), and the protruding portion (133) covers the opening (1131).

3. The battery device according to claim 2, characterized in that The protruding portion (133) is welded to the first heat exchange portion (113).

4. The battery device according to claim 2, wherein: The connecting block (12) comprises a profile (124) and a sealing plate (125); the profile (124) has an open structure on both sides along the second direction; the sealing plates (125) are respectively welded to both sides of the profile (124) along the second direction; the sealing plates (125) are used to seal the open sides of the profile (124) along the second direction, and the second direction intersects with the first direction.

5. The battery device according to claim 4, characterized in that The side of the profile (124) facing the first heat exchange part (113) is welded to 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 (1131); the connecting seat (131) is located outside the side of the profile (124) facing away from the first heat exchange part (113), and the connecting seat (131) is welded to the side of the profile (124) facing away from the first heat exchange part (113).

6. The battery device according to claim 4, characterized in that A first concave portion (1011) is provided on a side of the first side plate (101) on the box body (10) facing the profile (124); The profile (124) is welded to the first heat exchange portion (113), and at least a portion of the profile (124) is located in the first inner recess (1011).

7. The battery device according to claim 4, characterized in that 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 then welded to the first heat exchange portion (113); The connecting seat (131) covers the socket (1241).

8. The battery device according to claim 4, wherein: The profile (124) is provided with a first extension portion (1242), and the first extension portion (1242) is provided with a first connection hole (12421).

9. The battery device according to any one of claims 1 to 8, characterized in that: The battery device further comprises a cap (14), wherein the cap (14) is arranged on the heat exchange joint (13) and is used to seal the heat exchange joint (13).

10. The battery device according to claim 9, characterized in that An elastic column (141) is provided inside the cap (14); The elastic column (141) is located in the water inlet channel on the heat exchange joint (13).

11. The battery device according to claim 10, characterized in that The elastic column (141) is interference-fitted with the water inlet channel.

12. The battery device according to any one of claims 1 to 8, characterized in that: The first plate is a bottom plate, and the second heat exchange portion (114) is arranged on a side of the bottom plate facing the accommodating cavity.

13. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 12.

Images