Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment. The battery device comprises a box body, a battery cell and a bottom protection piece. The box body is provided with a containing cavity with one end open, and the battery monomers are arranged in the containing cavity. The bottom protection piece is connected to the side, opposite to the opening in the first direction, of the box bottom wall in a sealed mode, and a heat exchange channel is defined between the bottom protection piece and the box bottom wall. The heat exchange channel can be used for carrying out heat management on the battery monomers, and meanwhile, parts such as a cooling plate can be omitted, so that the cost of the battery device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and a power consumption equipment. BACKGROUND

[0002] Batteries are widely used in electronic devices, such as mobile phones, notebook computers, electric vehicles, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes, and electric tools.

[0003] In the development of battery technology, how to reduce the cost of the battery is a research direction in the battery technology. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a battery device and a power consumption equipment to solve the technical problem of how to reduce the cost of the battery.

[0005] According to a first aspect of the present application, a battery device is provided, comprising a box body, a battery monomer, and a bottom protection piece. The box body has a containing cavity with one end open, and the battery monomer is arranged in the containing cavity. The box body has a box bottom wall arranged opposite to the opening along a first direction, and the bottom protection piece is sealingly connected to one side of the box bottom wall away from the opening along the first direction, and a heat exchange channel is defined between the bottom protection piece and the box bottom wall.

[0006] In the technical solution of the present application, the bottom protection piece is sealingly connected to one side of the box bottom wall away from the opening along the first direction, and a heat exchange channel is defined between the bottom protection piece and the box bottom wall. In this way, the heat exchange channel can be used for heat management of the battery monomer, and at the same time, components such as cooling plates can be omitted, thereby facilitating the reduction of the cost of the battery device.

[0007] In one of the embodiments, the box bottom wall comprises a plurality of connection parts and a plurality of heat exchange parts connected together; the connection parts and the heat exchange parts are arranged alternately along a second direction perpendicular to the first direction; the connection parts are sealingly connected to the bottom protection piece; and the heat exchange parts are arranged spaced apart from the bottom protection piece to define the heat exchange channel with the bottom protection piece.

[0008] By arranging a plurality of connection parts and a plurality of heat exchange parts on the box bottom wall, the plurality of connection parts provide multi-point support for the placement of the battery monomer, thereby improving the structural strength of the box body and the bottom protection piece. At the same time, a plurality of heat exchange channels are formed between the plurality of heat exchange parts and the bottom protection piece, thereby improving the heat exchange efficiency of the battery device and further improving the reliability of the heat management of the battery monomer.

[0009] In one of the embodiments, the battery monomer comprises a pole; the connection part is formed with a groove, and the pole is accommodated in the groove.

[0010] The connecting part defines a groove for accommodating the pole, and the battery cell is arranged in an inverted manner, closer to the bottom wall of the box, so as to facilitate heat management of the pole and the battery cell through the heat exchange passage between the heat exchange part and the bottom guard.

[0011] In one of the embodiments, each connecting part defines a groove; the number of battery cells is multiple, the connecting parts are arranged correspondingly to the battery cells, and the poles of the battery cells are arranged in the grooves of the corresponding connecting parts.

[0012] In this way, the heat exchange passage between the heat exchange part and the bottom guard can be used to better manage the heat of the plurality of battery cells.

[0013] In one of the embodiments, the battery cell further comprises a battery cell body and a first pressure relief mechanism; the pole and the first pressure relief mechanism are arranged on opposite sides of the battery cell body; the battery device further comprises a second pressure relief mechanism arranged on the side wall of the box body.

[0014] In this way, the first pressure relief mechanism can be used to release the pressure in the battery cell, and the second pressure relief mechanism can be used to release the pressure in the accommodation cavity, thereby improving the safety and reliability of the battery device.

[0015] In one of the embodiments, the bottom guard and the bottom wall of the box define a plurality of heat exchange passages between the side away from the opening along the first direction; all the heat exchange passages include a first heat exchange passage and a second heat exchange passage, and a plurality of third heat exchange passages; the third heat exchange passages are communicated between the first heat exchange passage and the second heat exchange passage. The battery cell is arranged on the side of the third heat exchange passage close to the opening along the first direction.

[0016] In this way, the heat exchange liquid can flow through the first heat exchange passage to the plurality of third heat exchange passages, and after heat exchange with the battery cell arranged on the third heat exchange passage, the part of the heat exchange liquid passes through the second heat exchange passage to discharge the heat exchange liquid, so that the plurality of heat exchange passages can be used to better manage the heat of the battery cell in the accommodation cavity.

[0017] In one of the embodiments, the battery device further comprises a liquid inlet member and a liquid outlet member arranged opposite along a third direction; the liquid inlet member is communicated with the upstream end of the first heat exchange passage; the downstream end of the second heat exchange passage is communicated with the liquid outlet member; the first direction and the third direction intersect with each other.

[0018] The heat exchange liquid can flow through the liquid inlet member to the first heat exchange passage, and then to the plurality of third heat exchange passages, and after heat exchange with the battery cell, the part of the heat exchange liquid flows through the second heat exchange passage to the liquid outlet member, so that the effect of circulating heat management of the battery cell can be achieved.

[0019] In one of the embodiments, the battery device further comprises an adhesive member; the bottom guard is sealingly connected to the bottom wall of the box through the adhesive member along a first direction away from the side of the opening.

[0020] In this way, the sealing reliability of the connection of the bottom guard to the bottom wall of the box can be improved by the adhesive member.

[0021] In one of the embodiments, the adhesive member comprises a first adhesive layer, a base layer and a second adhesive layer; the first adhesive layer, the base layer and the second adhesive layer are stacked between the bottom wall of the box and the bottom guard along the first direction; the first adhesive layer and the second adhesive layer are both adhesive.

[0022] The first adhesive layer is adhered between the bottom wall of the box and the base layer, and the second adhesive layer is adhered between the base layer and the bottom guard along the first direction, so that the sealing reliability of the adhesive member can be improved.

[0023] In one of the embodiments, the bottom guard is welded to the box body.

[0024] In this way, the connection reliability between the bottom guard and the box body can be improved.

[0025] According to a second aspect of the present application, a power consuming device is provided, which comprises the battery device of any of the above embodiments.

[0026] The above description is only a summary of the technical solutions of the present application, in order to enable the technical means of the present application to be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described in detail. BRIEF DESCRIPTION OF DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several views to denote the same or similar parts. In the drawings:

[0028] Figure 1 A structural schematic diagram of a vehicle according to an embodiment of the present application is shown.

[0029] Figure 2 A partial structural schematic diagram of a battery device according to an embodiment of the present application is shown.

[0030] Figure 3 An exploded schematic diagram of the box body and the bottom guard is shown.

[0031] Figure 4 A partial sectional view of a battery device according to an embodiment of the present application is shown.

[0032] Figure 5 A partial cross-sectional view of a battery device according to another embodiment of the present application is shown.

[0033] Figure 6 A schematic structural diagram of an adhesive component according to an embodiment of the present application is shown.

[0034] Figure markings: 1. vehicle; 10. battery device; 100. box body; 110. connecting part; 120. heat exchange part; H. heat exchange channel; H1. first heat exchange channel; H2. second heat exchange channel; H3. third heat exchange channel; K. opening; Q. accommodating chamber; 200. battery cell; 210. pole; 220. battery cell body; 230. first pressure relief mechanism; 300. bottom guard; 400. second pressure relief mechanism; 510. liquid inlet; 520. liquid outlet; 600. adhesive; 610. first adhesive layer; 620. base layer; 630. second adhesive layer; H. heat exchange channel; T. mounting channel; C. groove; 20. motor; 30. controller; F1. first direction; F2. second direction; F3. third direction. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if the 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 this application.

[0037] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if there are terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0038] In the present application, unless otherwise explicitly specified and limited, if there are terms "installation", "connection", "connection", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on" or "below" the second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If there is, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of illustration, and do not represent the only implementation.

[0041] In the related art, a separate liquid cooling plate needs to be arranged for the battery monomer, resulting in a higher cost of the battery device.

[0042] In order to reduce the cost of the battery device, the present application designs a battery device and a power consumption equipment, which can save cooling plates and other components, thereby reducing the cost of the battery device.

[0043] The battery device disclosed in the embodiments of the present application can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. The electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship and a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy and an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc. The power supply system of the electric device can be composed of the battery device disclosed in the present application, so that the electric device can be driven by electricity and the service life of the electric device can be prolonged.

[0044] Figure 1 A structural schematic diagram of a vehicle 1 is shown in an embodiment of the present application. The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile, which can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The battery device 10 is arranged in the vehicle 1. For example, the battery device 10 can be arranged at the bottom, the front or the rear of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1. For example, the battery device 10 can be used as an operating power source of the vehicle 1, which is used for the circuit system of the vehicle 1, such as the working power demand of the vehicle 1 during starting, navigation and running. In another embodiment of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, which can replace or partially replace the fuel or natural gas to provide driving force for the vehicle 1.

[0045] The motor 20 and the controller 30 can also be arranged in the vehicle 1. The controller 30 is used to control the power supply of the battery device 10 to the motor 20, such as the working power demand of the vehicle 1 during starting, navigation and running.

[0046] Figure 2 A partial structural schematic diagram of the battery device 10 is shown in an embodiment of the present application. Figure 3 An exploded schematic diagram of the box body 100 and the bottom protection piece 300 is shown, Figure 4 A partial sectional view of the battery device 10 is shown in an embodiment of the present application.

[0047] Please refer to Figures 2-4 An embodiment of the present application provides a battery device 10, which comprises a box body 100, a battery monomer 200 and a bottom protection piece 300.

[0048] The box body 100 has a receiving cavity Q with an opening K, and the battery cell 200 is arranged in the receiving cavity Q. The box body 100 has a bottom wall opposite to the opening K along a first direction F1, and the bottom guard 300 is sealingly connected to one side of the bottom wall along the first direction F1 away from the opening K, and the heat exchange channel H is defined between the bottom guard 300 and the bottom wall. The first direction F1 is parallel to the thickness direction of the bottom wall.

[0049] The box body 100 refers to a component of the battery device 10 for accommodating the battery cell 200, and the heat exchange channel H can be defined between the box body 100 and the bottom guard 300.

[0050] The battery cell 200 is the smallest power supply unit in the battery device 10, and the number of the battery cell 200 can be one or more.

[0051] The bottom guard 300 is a component of the battery device 10 for connecting the bottom wall, and the heat exchange channel H is defined between the bottom guard 300 and the bottom wall.

[0052] The heat exchange channel H refers to a channel defined by the bottom wall and the bottom guard 300, and the heat exchange channel H can be used for passing a heat exchange substance, which can exchange heat with the battery cell 200 to adjust the temperature of the battery cell 200. For example, the battery cell 200 is heated or cooled. The material of the heat exchange substance includes but is not limited to water, ethylene glycol, or a mixture of water and ethylene glycol.

[0053] In the technical solution of the present application, the bottom guard 300 is sealingly connected to one side of the bottom wall along the first direction F1 away from the opening K, and the heat exchange channel H is defined between the bottom guard 300 and the bottom wall. In this way, the heat exchange channel H can be used for heat management of the battery cell 200, and the cooling plate and other components can be omitted, thereby reducing the cost of the battery device 10.

[0054] In addition, since the bottom guard 300 is sealingly connected to one side of the bottom wall along the first direction F1 away from the opening K, the reliability of the heat exchange channel H can be improved, and the reliability of the heat management of the battery cell 200 can be improved.

[0055] In some embodiments, as shown in Figure 2 The bottom wall includes a plurality of connecting portions 110 and a plurality of heat exchange portions 120 connected together, wherein the connecting portions 110 and the heat exchange portions 120 are alternately arranged along a second direction F2 perpendicular to the first direction F1. At the same time, the connecting portions 110 are sealingly connected to the bottom guard 300, and the heat exchange portions 120 are arranged in a spaced manner with the bottom guard 300 to define the heat exchange channel H with the bottom guard 300.

[0056] The plurality of connecting portions 110 provide multi-point support for the placement of the battery monomer 200, thereby improving the structural strength of the box body 100 and the bottom guard 300. Meanwhile, the plurality of heat exchange portions 120 correspondingly form a plurality of heat exchange channels H between the plurality of heat exchange portions 120 and the bottom guard 300, thereby improving the heat exchange efficiency of the battery device 10, and further improving the reliability of the thermal management of the battery monomer 200.

[0057] The connecting portion 110 refers to a portion on the bottom wall of the box for sealing connection with the bottom guard 300. The sealing connection between the connecting portion 110 and the bottom guard 300 can be achieved by welding or adhesion, or a sealing member can be provided between the bottom guard 300 and the connecting portion 110 to achieve a sealing effect by appropriate compression of the sealing member. The types of sealing members include but are not limited to rubber and silicone.

[0058] The heat exchange portion 120 refers to a portion on the bottom wall of the box for defining the heat exchange channel H with the bottom guard 300.

[0059] The connecting portion 110 can be sealingly connected to the side of the bottom wall of the box facing away from the opening K in the first direction F1. In this way, the heat exchange portion 120 and the bottom guard 300 define the heat exchange channel H, which can improve the reliability of the heat exchange channel H, and further improve the reliability of the thermal management of the battery monomer 200.

[0060] In some embodiments, compared to the connecting portion 110, the heat exchange portion 120 is disposed closer to the opening K in the first direction F1 and is used to define the heat exchange channel H with the bottom guard 300.

[0061] In other words, the heat exchange portion 120 is recessed towards the side closer to the opening K in the first direction F1 and is used to define the heat exchange channel H with the bottom guard 300.

[0062] It can be understood that, compared to the connecting portion 110, the heat exchange portion 120 is disposed farther away from the bottom guard 300 in the first direction F1, which facilitates the definition of the heat exchange channel H between the heat exchange portion 120 and the bottom guard 300.

[0063] In some embodiments, compared to the heat exchange portion 120, the connecting portion 110 is disposed farther away from the opening K in the first direction F1, and the connecting portion 110 is sealingly connected to the side of the bottom guard 300 closer to the box body 100.

[0064] In other words, the connecting portion 110 is recessed towards the side farther away from the opening K in the first direction F1, and the connecting portion 110 can be sealingly connected to the side of the bottom guard 300 closer to the box body 100.

[0065] Thus, along the first direction F1, the connection portion 110 is disposed closer to the bottom guard 300 than the heat exchange portion 120, so that the connection portion 110 is sealed to the bottom guard 300. In some embodiments, the battery cell 200 includes a terminal 210, and the connection portion 110 is limited to form a groove C, and the terminal 210 is received in the groove C.

[0066] The terminal 210 is a component on the battery cell 200 for outputting the power of the battery cell 200 to the outside.

[0067] The polarity of the pole 210 can be positive or negative, which is not specifically limited here.

[0068] The connecting portion 110 defines a groove C for accommodating the pole 210, and the battery cell 200 is arranged in an inverted manner, closer to the bottom wall of the box, so as to facilitate better thermal management of the pole 210 and the battery cell 200 through the heat exchange channel H between the heat exchange portion 120 and the bottom guard 300.

[0069] In some embodiments, the bottom wall of the box includes multiple connecting parts 110, each connecting part 110 defines a groove C, the number of battery cells 200 is multiple, the connecting parts 110 are arranged corresponding to the battery cells 200, and the poles 210 of the battery cells 200 are arranged in the grooves C of the corresponding connecting parts 110.

[0070] In this way, the heat exchange channel H between the heat exchange portion 120 and the bottom protector 300 can be used to better manage the heat of the plurality of battery cells 200 .

[0071] In some embodiments, as Figure 4 As shown, the battery cell 200 includes two poles 210 , and the two poles 210 of the same battery cell 200 are disposed in the groove C of the same connecting portion 110 .

[0072] The two poles 210 of the same battery cell 200 are arranged in the groove C of the same connecting portion 110 , which facilitates the installation of the battery cell 200 .

[0073] In some embodiments, the bottom wall of the box includes a plurality of connecting portions 110, each connecting portion 110 defining a groove C. Figure 5 As shown, the battery cell 200 includes two poles 210 , and the two poles 210 of the same battery cell 200 are disposed in different grooves C.

[0074] Placing the two poles 210 of the same battery cell 200 in different grooves C is beneficial for laying out a wider heat exchange channel H, thereby improving the thermal management efficiency of the battery cell 200 .

[0075] The width of the heat exchange channel H is the size of the heat exchange channel H in the second direction F2.

[0076] In some embodiments, the bottom wall of the box comprises a plurality of connecting portions 110 and a plurality of heat exchange portions 120, and the plurality of heat exchange channels H are defined between the bottom guard 300 and all the heat exchange portions 120. The plurality of connecting portions 110 and the plurality of heat exchange portions 120 are arranged alternately along the second direction F2. The first direction F1 and the second direction F2 intersect with each other.

[0077] The second direction F2 can be parallel to the plane on which the opening K is located.

[0078] It can be understood that the heat exchange channels H can be arranged adjacent to the grooves C on the connecting portions 110 along the second direction F2, and the heat exchange channels H can be arranged alternately with the grooves C on the connecting portions 110 along the second direction F2, so that the plurality of battery monomers 200 are better managed.

[0079] In some embodiments, as shown in Figure 4 and Figure 5 , the battery monomer 200 further comprises a battery monomer body 220 and a first pressure relief mechanism 230, and the pole 210 and the first pressure relief mechanism 230 are arranged on opposite sides of the battery monomer body 220. As shown in Figure 2 and Figure 3 , the battery device 10 further comprises a second pressure relief mechanism 400, and the second pressure relief mechanism 400 is arranged on the side wall of the box body 100.

[0080] The battery monomer body 220 is the main part of the battery monomer 200.

[0081] The first pressure relief mechanism 230 is a component on the battery monomer 200 for releasing the pressure in the battery monomer 200, and the first pressure relief mechanism 230 is arranged on the opposite side of the pole 210.

[0082] The second pressure relief mechanism 400 is a mechanism arranged on the side wall of the box body 100 and used for releasing the pressure in the accommodation cavity Q.

[0083] In the present embodiment, the side wall of the box body 100 is provided with a mounting channel T communicating with the accommodation cavity Q, and the second pressure relief mechanism 400 is adaptively mounted on the side wall of the mounting channel T.

[0084] In this way, the pressure in the battery monomer 200 can be released by the first pressure relief mechanism 230, and the pressure in the accommodation cavity Q can also be released by the second pressure relief mechanism 400, thereby improving the safety and reliability of the battery device 10.

[0085] In some embodiments, please refer to Figure 2 and Figure 3The plurality of heat exchange channels H includes a first heat exchange channel H1 and a second heat exchange channel H2, and a plurality of third heat exchange channels H3. The first heat exchange channel H1 and the second heat exchange channel H2 extend along a second direction F2, and the plurality of third heat exchange channels H3 extend along a third direction F3. The plurality of third heat exchange channels H3 are arranged in the second direction F2, and the third heat exchange channels H3 are connected to the first heat exchange channel H1 and the second heat exchange channel H2. The battery monomers 200 are arranged on a side of the third heat exchange channels H3 close to the opening K along the first direction F1. The heat exchange medium can enter the battery device through the first heat exchange channel H1, and be distributed to the plurality of third heat exchange channels H3 to exchange heat with the plurality of battery monomers 200. Then, the heat exchange medium can be collected by the second heat exchange channel H2 and flow out of the battery device.

[0086] The heat exchange channels H can have oppositely arranged upstream ends and downstream ends. The plurality of third heat exchange channels H3 are connected in series with each other. The downstream end of the first heat exchange channel H1 is connected to the upstream end of the third heat exchange channel H3 located at the most upstream of the plurality of third heat exchange channels H3. The downstream end of the third heat exchange channel H3 located at the most downstream of the plurality of third heat exchange channels H3 is connected to the upstream end of the second heat exchange channel H2. Of course, the present application is not limited thereto. The plurality of third heat exchange channels H3 can also be connected in parallel or in a mixed manner between the first heat exchange channel H1 and the second heat exchange channel H2. The mixed manner is a combination of series connection and parallel connection.

[0087] The first heat exchange channel H1 refers to one of the plurality of heat exchange channels H located at the most upstream.

[0088] The second heat exchange channel H2 refers to one of the plurality of heat exchange channels H located at the most downstream.

[0089] The third heat exchange channel H3 refers to one of the heat exchange channels H connected between the downstream end of the first heat exchange channel H1 and the upstream end of the second heat exchange channel H2.

[0090] In this way, the heat exchange medium can flow through the first heat exchange channel H1 to the plurality of third heat exchange channels H3. After exchanging heat with the battery monomers 200 in the third heat exchange channels H3, the heat exchange medium flows through the second heat exchange channel H2 to discharge the heat exchange liquid. In this way, the plurality of heat exchange channels H can be used to well manage the heat of the battery monomers 200 in the accommodation cavity Q.

[0091] In some embodiments, as Figure 2As shown, the battery device 10 further comprises a liquid inlet member 510 and a liquid outlet member 520 oppositely arranged along a third direction F3, the liquid inlet member 510 being in communication with the upstream end of the first heat exchange channel H1, and the downstream end of the second heat exchange channel H2 being in communication with the liquid outlet member 520. The first direction F1 and the third direction F3 intersect with each other.

[0092] The third direction F3 can be parallel to the plane where the opening K is located. For example, the second direction F2 is parallel to the length direction of the box body 100, and the third direction F3 can be parallel to the width direction of the box body 100.

[0093] The liquid inlet member 510 refers to a component for supplying heat exchange liquid to the upstream end of the first heat exchange channel H1, and the liquid inlet member 510 can be a liquid inlet pipe. The liquid outlet member 520 refers to a component for receiving heat exchange liquid from the downstream end of the second heat exchange channel H2, and the liquid outlet member 520 can be a liquid outlet pipe.

[0094] The heat exchange liquid can flow to the first heat exchange channel H1 through the liquid inlet member 510, and then flow to the plurality of third heat exchange channels H3. After heat exchange with the battery monomer 200, the heat exchange liquid flows to the liquid outlet member 520 through the second heat exchange channel H2, so that the effect of circulating heat management of the battery monomer 200 can be achieved.

[0095] In some embodiments, as shown in Figure 2 The end of the liquid inlet member 510 away from the first heat exchange channel H1 penetrates out of the side wall of the box body 100. The end of the liquid outlet member 520 away from the second heat exchange channel H2 penetrates out of the side wall of the box body 100.

[0096] The liquid inlet member 510 and the liquid outlet member 520 are conveniently connected to other heat exchange components outside the box body 100, improving the convenience of input and output of heat exchange liquid.

[0097] In some embodiments, as shown in Figure 4 and Figure 5 The battery device 10 further comprises an adhesive member 600, and the bottom protection member 300 is sealingly connected to the side of the bottom wall of the box body away from the opening K along the first direction F1 through the adhesive member 600.

[0098] Specifically, the bottom protection member 300 is sealingly connected to the connecting portion 110 through the adhesive member 600.

[0099] The adhesive member 600 is arranged between the bottom protection member 300 and the bottom wall of the box body in a manner of adhesion.

[0100] In this way, the sealing reliability of the connection of the bottom protection member 300 to the bottom wall of the box body can be improved by using the adhesive member 600.

[0101] In some embodiments, as shown in Figure 6As shown, the adhesive member 600 includes a first adhesive layer 610, a base layer 620, and a second adhesive layer 630, which are stacked between the bottom wall of the box and the bottom guard member 300 along the first direction F1. The first adhesive layer 610 and the second adhesive layer 630 are both adhesive.

[0102] The base layer 620 refers to a resin layer between the first adhesive layer 610 and the second adhesive layer 630 in the adhesive member 600. The material of the base layer 620 can be polypropylene or polyamide resin.

[0103] The first adhesive layer 610 and the second adhesive layer 630 refer to two resin layers on opposite sides of the base layer 620 along the thickness direction thereof.

[0104] The material of the first adhesive layer 610 and the second adhesive layer 630 can be adhesive resin, such as linear low-density polyethylene.

[0105] The base layer 620 serves as a carrier of the first adhesive layer 610 and the second adhesive layer 630, and the base layer 620 can be in the form of a film.

[0106] Along the first direction F1, the first adhesive layer 610 is bonded between the bottom wall of the box and the base layer 620, and the second adhesive layer 630 is bonded between the base layer 620 and the bottom guard member 300, so that the sealing reliability of the adhesive member 600 can be improved.

[0107] In some embodiments, the bottom guard member 300 is welded to the box body 100.

[0108] It should be noted that the welding position of the bottom guard member 300 and the box body 100 is arranged around the accommodation cavity Q, that is, the bottom guard member 300 is welded to the box body 100 at the periphery of the box body 100.

[0109] In this way, the connection reliability between the bottom guard member 300 and the box body 100 can be improved.

[0110] In some embodiments, the bottom wall of the box includes a connected portion 110 and a heat exchange portion 120, and the connected portion 110 is sealingly connected to the side of the bottom wall of the box away from the opening K along the first direction F1. The heat exchange portion 120 and the bottom guard member 300 define a heat exchange channel H.

[0111] The connected portion 110 can be sealingly connected to the side of the bottom wall of the box away from the opening K along the first direction F1, so that the heat exchange portion 120 and the bottom guard member 300 define the heat exchange channel H, and the reliability of the heat exchange channel H can be improved, thereby improving the reliability of the thermal management of the battery monomer 200.

[0112] An embodiment of the present application provides a kind of electric equipment, including the battery device 10 of any of the above embodiments.

[0113] Any combination of the technical features in the above embodiments can be made. For the sake of brevity, the foregoing description is not intended to be exhaustive or to limit the scope of the application to the precise form disclosed. Modifications and alterations can occur to others upon reading and understanding the disclosure. Accordingly, it is intended that the scope of the application be circumscribed only by the metes and bounds of the claims that follow.

[0114] The above embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A battery device, characterized in that: include: A box body (100), the box body (100) having a receiving cavity (Q) with an opening (K) at one end; the box body (100) having a box bottom wall arranged opposite to the opening (K) along a first direction (F1); A battery cell (200) is disposed in the accommodating cavity (Q); The bottom guard (300) is sealed and connected to a side of the box bottom wall along the first direction (F1) facing away from the opening (K), and a heat exchange channel (H) is defined between the bottom guard (300) and the box bottom wall.

2. The battery device according to claim 1, wherein: The box bottom wall comprises a plurality of connected connection parts (110) and a plurality of heat exchange parts (120); the connection parts (110) and the heat exchange parts (120) are alternately arranged along a second direction (F2), and the second direction (F2) is perpendicular to the first direction (F1); The connecting portion (110) is sealingly connected to the bottom guard (300); The heat exchange portion (120) is spaced apart from the bottom protection member (300) to define the heat exchange channel (H) with the bottom protection member (300).

3. The battery device according to claim 2, characterized in that The battery cell (200) includes a pole (210); the connecting portion (110) is formed with a groove (C), and the pole (210) is accommodated in the groove (C).

4. The battery device according to claim 3, characterized in that Each of the connecting portions (110) defines the groove (C); There are a plurality of battery cells (200), the connecting portion (110) is arranged corresponding to the battery cells (200), and the pole (210) of the battery cell (200) is arranged in the groove (C) of the corresponding connecting portion (110).

5. The battery device according to claim 3, wherein: The battery cell (200) further includes a battery cell body (220) and a first pressure relief mechanism (230); The pole (210) and the first pressure relief mechanism (230) are arranged on opposite sides of the battery cell body (220); The battery device further comprises a second pressure relief mechanism (400), which is arranged on a side wall of the box body (100).

6. The battery device according to any one of claims 1 to 5, characterized in that: A plurality of heat exchange channels (H) are defined between the bottom guard (300) and a side of the box bottom wall away from the opening (K) along the first direction (F1); All the heat exchange channels (H) include a first heat exchange channel (H1) and a second heat exchange channel (H2), and a plurality of third heat exchange channels (H3); the third heat exchange channels (H3) are connected between the first heat exchange channel (H1) and the second heat exchange channel (H2); The battery cell (200) is arranged on one side of the third heat exchange channel (H3) close to the opening (K) along the first direction (F1).

7. The battery device according to claim 6, characterized in that The battery device further comprises a liquid inlet (510) and a liquid outlet (520) arranged opposite to each other along a third direction (F3); The liquid inlet member (510) is connected to the upstream end of the first heat exchange channel (H1); The downstream end of the second heat exchange channel (H2) is connected to the liquid outlet (520); The first direction (F1) and the third direction (F3) intersect each other.

8. The battery device according to any one of claims 1 to 5, characterized in that: The battery device further includes an adhesive member (600); The bottom protection member (300) is sealed and connected to a side of the box bottom wall away from the opening (K) along the first direction (F1) via the adhesive member (600).

9. The battery device according to claim 8, characterized in that The adhesive member (600) comprises a first adhesive layer (610), a base layer (620) and a second adhesive layer (630); Along the first direction (F1), the first adhesive layer (610), the base layer (620), and the second adhesive layer (630) are stacked and arranged between the box bottom wall and the bottom protective member (300); The first adhesive layer (610) and the second adhesive layer (630) are both adhesive.

10. The battery device according to any one of claims 1 to 5, characterized in that: The bottom guard (300) is connected to the box body (100) by welding.

11. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 10.

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