Battery device and electric device

Abstract

The utility model is applicable to the technical field of batteries, and provides a battery device and a power utilization device, the battery device comprises a heat exchange assembly and a water nozzle connector, the heat exchange assembly is provided with a cooling channel and a first opening which are communicated with each other, the outer surface of the heat exchange assembly is provided with a first connecting surface around the first opening, and the first connecting surface surrounds the first opening. The water nozzle connector is provided with a second opening and a second connecting face, the first opening is communicated with the second opening, the second connecting face surrounds the second opening, and the first connecting face and the second connecting face are bonded to achieve connection of the water nozzle connector and the heat exchange assembly. The water nozzle connector and / or the heat exchange assembly are / is provided with a glue overflowing groove, and the glue overflowing groove is used for containing glue overflowing from the connecting position of the first connecting face and the second connecting face. Through the glue overflowing groove, the possibility that redundant glue enters the areas, used for being assembled with other devices, of the heat exchange assembly and the water nozzle connector can be reduced, and the probability that the glue interferes with other components after being solidified is reduced.

Description

TECHNICAL FIELD

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

[0002] A battery generates heat during use. In order to ensure that the battery is within a normal temperature range, a cooling device is needed to dissipate heat from the battery in a timely manner.

[0003] In the related art, the inlet and / or outlet of the cooling device are connected to the joint by means of adhesion, which facilitates the connection of the cooling device to the external pipe. However, the adhesive is prone to overflow, which can affect the assembly of other structures. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the present application provides a battery device and a power consumption device to reduce the impact of the overflowed adhesive on the assembly of the battery device.

[0005] In a first aspect, the embodiments of the present application provide a battery device, comprising:

[0006] A heat exchange assembly having a cooling channel and a first opening in communication with each other, wherein the outer surface of the heat exchange assembly has a first connecting surface around the first opening, and the first connecting surface surrounds the first opening.

[0007] A water nozzle joint having a second opening and a second connecting surface, wherein the first opening and the second opening are in communication, the second connecting surface surrounds the second opening, and the first connecting surface and the second connecting surface are adhered to achieve the connection of the water nozzle joint and the heat exchange assembly.

[0008] In the above technical solution, the water nozzle joint and / or the heat exchange assembly is provided with an overflow groove for accommodating the overflowed adhesive from the connection between the first connecting surface and the second connecting surface, which can reduce the possibility of excess adhesive entering the area of the water nozzle joint and the heat exchange assembly used for assembly with other devices, thereby reducing the interference probability of the adhesive in solidification with other devices of the battery device.

[0009] In the above technical solution, the water nozzle joint and / or the heat exchange assembly is provided with an overflow groove for accommodating the overflowed adhesive from the connection between the first connecting surface and the second connecting surface, which can reduce the possibility of excess adhesive entering the area of the water nozzle joint and the heat exchange assembly used for assembly with other devices, thereby reducing the interference probability of the adhesive in solidification with other devices of the battery device.

[0010] In some embodiments, the water nozzle joint is provided with an overflow groove, and the groove opening of the overflow groove is formed in the second connecting surface.

[0011] In the technical solution, the overflow groove is formed on the second connecting surface of the water nozzle connector for connecting the heat exchange assembly, so that the overflow groove can better collect the excess adhesive from the connecting position between the first connecting surface and the second connecting surface, thereby reducing the possibility of adhesive overflow and the influence of the adhesive on the assembly of other components of the battery device.

[0012] In some embodiments, the overflow groove surrounds the second opening.

[0013] In the technical solution, the overflow groove surrounds the second opening, so that the overflow groove can form the largest possible internal space in the limited area of the second connecting surface to accommodate more excess adhesive from the connecting position between the first connecting surface and the second connecting surface, thereby further reducing the possibility of adhesive overflow.

[0014] In some embodiments, the number of overflow grooves is multiple, and the multiple overflow grooves are distributed in a radial manner.

[0015] In the technical solution, the multiple overflow grooves distributed in a radial manner can accommodate more overflow adhesive from the connecting position between the first connecting surface and the second connecting surface, thereby further reducing the possibility of adhesive overflow.

[0016] In some embodiments, the overflow groove extends in a corrugated manner.

[0017] In the technical solution, the volume of the overflow groove can be increased as much as possible to accommodate as much overflow adhesive as possible.

[0018] In some embodiments, a portion of the outer surface of the heat exchange assembly has a groove, the groove includes a groove bottom wall and a groove side wall, the first opening is arranged on the groove bottom wall of the groove, at least a portion of the groove bottom wall of the groove forms the first connecting surface, a portion of the water nozzle connector extends into the groove, and an area between the outer peripheral surface of the water nozzle connector and the groove side wall forms the overflow groove.

[0019] In the technical solution, the overflow groove formed by the partial recess of the outer surface of the heat exchange assembly and the outer peripheral surface of the water nozzle connector can increase the internal volume of the overflow groove, so that the overflow groove can accommodate more excess adhesive from the connecting position between the first connecting surface and the second connecting surface, thereby reducing the influence of the excess adhesive on the assembly of the battery device.

[0020] In some embodiments, at least a portion of the first connecting surface forms a concave indentation; and / or, at least a portion of the second connecting surface forms a concave indentation.

[0021] In the technical solution, the concave indentation can improve the bonding strength of the first connecting surface and the second connecting surface, thereby improving the adhesive strength of the heat exchange assembly and the water nozzle connector.

[0022] In some embodiments, the heat exchange assembly comprises a first plate body and a second plate body, the first plate body and the second plate body enclosing the cooling channel, the first opening penetrating the first plate body, and a surface of a side of the first plate body facing away from the second plate body at least partially forming the first connecting surface.

[0023] In the above technical solution, the first connecting surface formed by at least part of the surface of the first plate body can increase the area of the first connecting surface, thereby improving the bonding strength of the first connecting surface and the second connecting surface.

[0024] In some embodiments, the water nozzle connector comprises a barrel portion and a connecting portion, one end of the barrel portion being inserted into the first opening, the connecting portion surrounding the outer periphery of the barrel portion and protruding in the radial direction from the outer peripheral surface of the barrel portion, and at least part of the surface of the side of the connecting portion facing the first opening forming the second connecting surface.

[0025] In the above technical solution, the insertion of the barrel portion into the first opening can facilitate positioning when the water nozzle connector is bonded to the heat exchange assembly, and can improve the assembly precision of the water nozzle connector and the heat exchange assembly, and the protruding connecting portion can increase the area of the second connecting surface, thereby further improving the bonding strength of the water nozzle connector and the heat exchange assembly.

[0026] In a second aspect, the embodiments of the present application provide a power utilization device, comprising the battery device of any of the embodiments of the present application, and the battery device is used to provide electric energy.

[0027] In the above technical solution, by using the above-mentioned battery device, the residual adhesive on the water nozzle connector and the heat exchange assembly can be reduced, the influence of the adhesive on the assembly of other components of the battery device is reduced, the assembly precision of the battery device is improved, and the power utilization device has high manufacturing precision.

[0028] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments can be implemented in accordance with 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. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The structure schematic diagram of the power utilization device provided by an embodiment of the present application is shown;

[0030] Figure 2 The explosion schematic diagram of the battery device provided by an embodiment of the present application is shown;

[0031] Figure 3 The structure schematic diagram of the heat exchange assembly and the water nozzle structure in the battery device provided by an embodiment of the present application is shown;

[0032] Figure 4 is an exploded view of the battery device of Figure 3 ;

[0033] Figure 5 is a structural view of the water nozzle structure in Figure 3 ;

[0034] Figure 6 is a view from another perspective of the battery device of Figure 3 ;

[0035] Figure 7 is a sectional view of A-A in Figure 6 ;

[0036] Figure 8 is a structural view of the heat exchange assembly and the water nozzle structure in the battery device according to another embodiment of the present application;

[0037] Figure 9 is an exploded view of the battery device of Figure 8 ;

[0038] Figure 10 is a structural view of the water nozzle structure in Figure 8 ;

[0039] Figure 11 is a view from another perspective of the battery device of Figure 8 ;

[0040] Figure 12 is a sectional view of B-B in Figure 11 .

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 10, battery device; 21, case; 211, first case; 212, second case; 11, heat exchange assembly; 111, first plate body; 111a, groove; 111a1, groove bottom wall; 111a2, groove side wall; 112, second plate body; 11a, first opening; 11b, cooling passage; 11c, first connecting surface; 12, water nozzle connector; 121, barrel portion; 122, connecting portion; 12a, second opening; 12b, second connecting surface; 10a, overflow groove; 10a1, groove opening; 3, vehicle; 31, controller; 32, motor. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0044] In the specific embodiments, various specific technical features described can be combined in any suitable manner, for example, different embodiments and technical solutions can be formed by the combination of different specific technical features, without contradiction. In order to avoid unnecessary repetition, various possible combinations of various specific technical features in the present application are not described again.

[0045] In the following description, the terms "first, second, …" are only to distinguish different objects, and do not mean that there is the same or relationship between the objects. It should be understood that the orientation description "upper", "lower", "outer", "inner" are the orientation in the normal use state, and the "left" and "right" directions represent the left and right directions shown in the specific corresponding schematic diagram, which can be the left and right directions in the normal use state or can not be.

[0046] It should be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including one" does not exclude the presence of another identical element in the process, method, article or device including the element. "At least two" means greater than or equal to two.

[0047] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycle, electric motorcycle, electric vehicle and other electric vehicles, and aerospace field. With the continuous expansion of the application field of battery device, the demand of its market is increasing, and its output is also increasing.

[0048] In the production process of battery device, a heat exchange assembly needs to be set up to take away the heat generated inside the battery device. In the related art, the heat exchange assembly needs to be bonded with the water nozzle joint to facilitate the heat exchange assembly to the external pipe.

[0049] The applicant found that in the related art, when the heat exchange assembly is bonded with the water nozzle joint, the bonding of the heat exchange assembly and the water nozzle joint needs to be realized by adhesive, but the adhesive is easy to overflow from the connection between the heat exchange assembly and the water nozzle joint before solidification, and the overflowed adhesive is difficult to clean after solidification and is easy to remain, thereby affecting the assembly of other devices of the battery device, and easy to cause large error in the assembly of other devices, and further affect the use reliability of the battery device.

[0050] Based on the above considerations, in order to reduce the possibility of overflow of adhesive when the heat exchange assembly is bonded with the water nozzle joint, and to reduce the impact of the overflowed adhesive on the assembly of the battery device, the applicant has designed a battery device after in-depth research, which comprises a heat exchange assembly and a water nozzle joint.

[0051] The heat exchange assembly has a cooling channel and a first opening in communication with each other, and the outer surface of the heat exchange assembly has a first connecting surface around the first opening. The first connecting surface surrounds the first opening. The water nozzle joint has a second opening and a second connecting surface, the first opening and the second opening are in communication, the second connecting surface surrounds the second opening, and the first connecting surface and the second connecting surface are bonded to achieve the connection of the water nozzle joint and the heat exchange assembly. Wherein, the water nozzle joint and / or the heat exchange assembly is provided with an overflow groove, the overflow groove is used to accommodate the overflowed adhesive from the connection between the first connecting surface and the second connecting surface. In this way, through the overflow groove on the water nozzle joint and / or the heat exchange assembly, the overflowed adhesive from the connection between the first connecting surface and the second connecting surface is collected, which can reduce the impact of the solidified overflowed adhesive on the assembly of other components of the battery device.

[0052] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle 3 is provided for some embodiments of the present application. The vehicle 3 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile or a range extended automobile, etc. The vehicle 3 is internally provided with a battery device 10, which can be arranged at the bottom, head or tail of the vehicle 3. The battery device 10 can be used for power supply of the vehicle 3, for example, the battery device 10 can be used as the operating power supply of the vehicle 3. The vehicle 3 can also include a controller 31 and a motor 32, and the controller 31 is used to control the battery device 10 to supply power to the motor 32, for example, to meet the power demand of the vehicle 3 during starting, navigation and driving.

[0053] In some embodiments of the present application, the battery device 10 can not only be used as the operating power supply of the vehicle 3, but also be used as the driving power supply of the vehicle 3, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 3.

[0054] Please refer to Figure 2 The battery device 10 (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells connected in series, parallel or mixed connection through a busbar component.

[0055] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery cells.

[0056] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0057] In some embodiments, the battery device 10 can be a battery pack, which includes a case 21 and one or more battery cell assemblies accommodated in the case 21.

[0058] As an example, the battery cell assembly can be a battery module, which can be accommodated in the case 21 by fixing the battery module in the case 21.

[0059] As an example, the battery cell assembly can also be accommodated in the case 21 by fixing a plurality of battery cells directly in the case 21.

[0060] As an example, the case 21 can include a first case 211 and a second case 212. The first case 211 and the second case 212 are buckled so that a closed space is formed inside the case 21 to accommodate the battery cell assembly. Here, closed means covered or closed, which can be sealed or unsealed. The first case 211 can be a top cover or a bottom plate.

[0061] As an example, the case 21 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively so that a closed space is formed inside the case 21 to accommodate the battery cell assembly.

[0062] In some embodiments, the case 21 can be part of the chassis structure of the vehicle 3. For example, part of the case 21 can be at least part of the floor of the vehicle 3, or part of the case 21 can be at least part of the cross beam and the longitudinal beam of the vehicle 3.

[0063] The technical solutions described in the embodiments of the present application are applicable to various battery cell using electric devices, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles 3, ships and spacecraft, such as aircraft, rockets, space shuttles and spaceships.

[0064] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above described battery device 10 and electric device, but also applicable to all battery devices 10 and electric devices using battery devices 10. For the sake of brevity of description, the following embodiments are described by taking the electric vehicle 3 as an example.

[0065] Please refer to Figure 3 and Figure 8The battery device 10 comprises a heat exchange assembly 11 and a water nozzle joint 12. The heat exchange assembly 11 has a cooling channel 11b and a first opening 11a in communication with each other, and the outer surface of the heat exchange assembly 11 has a first connecting surface 11c around the first opening 11a. The water nozzle joint 12 has a second opening 12a and a second connecting surface 12b around the second opening 12a. The first connecting surface 11c and the second connecting surface 12b are bonded to realize the connection of the water nozzle joint 12 and the heat exchange assembly 11. The water nozzle joint 12 and / or the heat exchange assembly 11 is provided with a glue overflow groove 10a for accommodating overflow glue from the joint of the first connecting surface 11c and the second connecting surface 12b.

[0066] It should be noted that the cooling channel 11b is in communication with the external cooling pipeline through the water nozzle joint 12. The water nozzle joint 12 has a connecting channel in communication with the second opening, and the connecting channel can be used for the flow of cooling liquid. The connection of the cooling channel 11b and the external cooling pipeline through the water nozzle joint 12 enables the heat exchange assembly 11 to exchange heat with other devices in the battery device 10, thereby removing the heat accumulated in the battery device 10 and helping the battery device 10 to dissipate heat.

[0067] It should be noted that the water nozzle joint 12 is used as a component for connecting the cooling channel 11b and the external cooling pipeline. The number of the water nozzle joint 12 and the first opening 11a is not limited, and they are arranged correspondingly. For example, the number of the water nozzle joint 12 and the first opening 11a is two. One water nozzle joint 12 is used as the inlet of the cooling channel 11b, and the other water nozzle joint 12 is used as the outlet of the cooling channel 11b. The cooling liquid in the external cooling pipeline flows into the cooling channel 11b through the inlet, and the heat exchange assembly 11 exchanges heat with other devices in the battery device 10 and then flows out through the outlet.

[0068] The number of the cooling channel 11b in the heat exchange assembly 11 is not limited. Multiple cooling channels 11b can be arranged, which can be in communication with each other or not. The shape of the cooling channel 11b is not limited. The cooling channel 11b can be in the shape of a strip, an arc, or other shapes.

[0069] It should be noted that the above-mentioned water nozzle joint 12 and / or heat exchange assembly 11 is provided with a glue overflow groove 10a, which includes the following three kinds: the first kind, the water nozzle joint 12 is provided with a glue overflow groove 10a; the second kind, the heat exchange assembly 11 is provided with a glue overflow groove 10a; the third kind, the water nozzle joint 12 and the heat exchange assembly 11 are both provided with a glue overflow groove 10a.

[0070] It can be understood that when the adhesive is injected between the first connecting surface 11c and the second connecting surface 12b, the excess adhesive can flow into the overflow groove 10a, which can reduce the possibility of the excess adhesive entering the areas of the water nozzle connector 12 and the heat exchange assembly 11 for assembly with other devices, and reduce the interference of the adhesive with other components after solidification.

[0071] In some embodiments, referring to Figures 8 to 10 , the water nozzle connector 12 is provided with the overflow groove 10a, and the groove opening 10a1 of the overflow groove 10a is formed on the second connecting surface 12b. It can be understood that when the adhesive is injected between the first connecting surface 11c and the second connecting surface 12b, part of the adhesive is used to bond the first connecting surface 11c and the second connecting surface 12b, and the excess adhesive enters the overflow groove 10a through the groove opening 10a1 on the second connecting surface 12b. In this way, the overflow groove 10a is formed by the second connecting surface 12b of the water nozzle connector 12 used for connecting the heat exchange assembly 11, so that the overflow groove 10a can better collect the excess adhesive from the connection between the first connecting surface 11c and the second connecting surface 12b, thereby reducing the possibility of the excess adhesive entering the areas of the water nozzle connector 12 and the heat exchange assembly 11 for assembly with other devices, and reducing the influence of the adhesive on the assembly of other devices of the battery device 10 after solidification.

[0072] In addition, due to the fluidity of the adhesive, after the adhesive entering the overflow groove 10a solidifies, the adhesive in the overflow groove 10a can be integrated with the adhesive between the first connecting surface 11c and the second connecting surface 12b. In this way, the adhesive entering the overflow groove 10a can also improve the connection strength of the water nozzle connector 12 and the heat exchange assembly 11, and reduce the possibility of the water nozzle connector 12 falling off the heat exchange assembly 11.

[0073] It should be noted that the specific area of the groove opening 10a1 of the overflow groove 10a on the second connecting surface 12b is not limited.

[0074] In some embodiments, referring to Figure 10 , in the embodiment in which the groove opening 10a1 of the overflow groove 10a is formed on the second connecting surface 12b, the overflow groove 10a surrounds the second opening 12a. It can be understood that the overflow groove 10a surrounding the second opening 12a can form the largest possible internal space in the limited area of the second connecting surface 12b to accommodate more excess adhesive from the connection between the first connecting surface 11c and the second connecting surface 12b, thereby further reducing the possibility of the excess adhesive entering the areas of the water nozzle connector 12 and the heat exchange assembly 11 for assembly with other devices.

[0075] It should be noted that the overflow groove 10a surrounding the second opening 12a means that the overflow groove 10a is centered on the second opening 12a and forms a ring-shaped boundary around the second opening 12a.

[0076] It should be noted that the specific shape of the notch 10a1 of the overflow groove 10a is not limited, and can be a circular ring, an oval, or a polygon.

[0077] Exemplarily, the notch 10a1 of the overflow groove 10a is formed on the side of the second connecting surface 12b away from the second opening 12a. In this way, as much glue as possible can be located within the annular boundary formed by the overflow groove 10a around the second opening 12a, and thus the possibility of the excess glue entering the area of the faucet connector 12 and the heat exchange assembly 11 for assembly with other devices can be further reduced.

[0078] In some embodiments, referring to Figure 5 , the notch 10a1 of the overflow groove 10a is formed on the second connecting surface 12b, and the number of overflow grooves 10a is multiple, and the multiple overflow grooves 10a are distributed in a radial manner.

[0079] In the embodiments of the present application, the multiple refers to two or more.

[0080] The multiple overflow grooves 10a are distributed in a radial manner, which means that the multiple overflow grooves 10a are arranged in a radial manner with the center of the second opening 12a as the core and spreading outwards.

[0081] It should be noted that the size of each overflow groove 10a can be the same or different, and the shape of each overflow groove 10a can be the same or different.

[0082] In this embodiment, by setting the number of overflow grooves 10a to be multiple and arranging them in a radial manner, the excess glue injected between the first connecting surface 11c and the second connecting surface 12b can flow into different overflow grooves 10a from different directions, so as to increase the capacity of the overflow grooves 10a to accommodate glue and further reduce the possibility of the glue entering the area of the faucet connector 12 and the heat exchange assembly 11 for assembly with other devices.

[0083] Exemplarily, the notch 10a1 of the overflow groove 10a extends in a corrugated manner. In this way, on the one hand, the volume of the overflow groove 10a can be increased as much as possible to accommodate as much excess glue as possible; on the other hand, the stability between the glue in the overflow groove 10a and the overflow groove 10a can be improved, so as to further improve the connection strength of the faucet connector 12 and the heat exchange assembly 11.

[0084] In some embodiments, referring to Figure 3 , Figure 6 and Figure 7The outer surface of the heat exchange assembly 11 is partially recessed to form a glue overflow groove 10a, the glue overflow groove 10a includes a groove bottom wall 111a1 and a groove side wall 111a2, the first opening 11a is disposed on the groove bottom wall 111a1 of the glue overflow groove 10a, at least part of the groove bottom wall 111a1 of the glue overflow groove 10a forms the first connecting surface 11c, a portion of the water nozzle connector 12 extends into the glue overflow groove 10a, and a region between the outer circumferential surface of the water nozzle connector 12 and the groove side wall 111a2 forms the glue overflow groove 10a.

[0085] At least part of the groove bottom wall 111a1 of the glue overflow groove 10a refers to that the groove bottom wall 111a1 of the glue overflow groove 10a surrounds at least part of the region of the first opening 11a.

[0086] The region between the outer circumferential surface of the water nozzle connector 12 and the groove side wall 111a2 refers to a region jointly surrounded by the outer circumferential surface of the water nozzle connector 12, the groove bottom wall 111a1 and the groove side wall 111a2 within the height range of the groove side wall 111a2, i.e. within the depth range of the glue overflow groove 10a.

[0087] It can be understood that, by using the glue overflow groove 10a formed by the partially recessed outer surface of the heat exchange assembly 11 and the outer circumferential surface of the water nozzle connector 12, the volume of the glue overflow groove 10a can be increased, so that the glue overflow groove 10a can accommodate more excess adhesive flowing from the connection between the first connecting surface 11c and the second connecting surface 12b, and the possibility of the excess adhesive entering the region of the water nozzle connector 12 and the heat exchange assembly 11 used for assembly with other devices can be reduced.

[0088] In addition, after the adhesive flowing into the glue overflow groove 10a solidifies, it can wrap a portion of the water nozzle connector 12 extending into the glue overflow groove 10a, and the adhesive flowing into the glue overflow groove 10a can be integrated with the adhesive between the first connecting surface 11c and the second connecting surface 12b after solidification, which can improve the connection strength of the water nozzle connector 12 and the heat exchange assembly 11, and reduce the possibility of the water nozzle connector 12 falling off the heat exchange assembly 11 during transportation of the battery device 10.

[0089] In some embodiments, referring to Figure 7 and Figure 12 The heat exchange assembly 11 includes a first plate body 111 and a second plate body 112, the first plate body 111 and the second plate body 112 jointly form a cooling channel 11b, the first opening 11a penetrates the first plate body 111, and the surface of the side of the first plate body 111 away from the second plate body 112 at least partially forms the first connecting surface 11c.

[0090] It can be understood that the first connecting surface 11c formed by at least part of the surface of the first plate body 111 can increase the area of the first connecting surface 11c, increase the contact area of the adhesive with the first connecting surface 11c, and further improve the bonding strength of the first connecting surface 11c and the second connecting surface 12b.

[0091] It should be noted that the first plate body 111 can be connected with the second plate body 112 by clamping, welding, bolt connection or other means, and the first plate body 111 and the second plate body 112 can be made of aluminum or stainless steel with good heat conduction performance. The first plate body 111 and the second plate body 112 can be in the shape of a cuboid, a rectangular plate, a circular plate or other irregular shapes.

[0092] In some embodiments, at least part of the first connecting surface 11c is formed with a notch (not shown in the figure); and / or at least part of the second connecting surface 12b is formed with a notch (not shown in the figure).

[0093] It should be noted that the above-mentioned at least part of the first connecting surface 11c and / or the second connecting surface 12b is formed with a notch, which includes the following three kinds: the first kind, at least part of the first connecting surface 11c is formed with a notch; the second kind, at least part of the second connecting surface 12b is formed with a notch; the third kind, at least part of the first connecting surface 11c and the second connecting surface 12b is formed with a notch.

[0094] It should be noted that the specific forming method of the notch is not limited, which can be formed by scratching on the first connecting surface 11c and / or the second connecting surface 12b, or can be formed by partially recessing on the first connecting surface 11c and / or the second connecting surface 12b, so as to increase the roughness of the first connecting surface 11c and / or the second connecting surface 12b.

[0095] In this embodiment, the notch can increase the friction coefficient of the first connecting surface 11c and / or the second connecting surface 12b, improve the bonding strength of the adhesive with the first connecting surface 11c and / or the second connecting surface 12b, and further improve the adhesive strength of the heat exchange assembly 11 and the nozzle joint 12, so as to reduce the possibility of the nozzle joint 12 falling off from the heat exchange assembly 11 during the transportation of the battery device 10.

[0096] In some embodiments, please refer to Figure 5 and Figure 10 The nozzle joint 12 includes a cylinder portion 121 and a connecting portion 122. One end of the cylinder portion 121 is inserted into the first opening 11a, and the connecting portion 122 surrounds the outer periphery of the cylinder portion 121 and protrudes radially from the outer peripheral surface of the cylinder portion 121. At least part of the surface of the connecting portion 122 towards the side where the first opening 11a is located forms the second connecting surface 12b.

[0097] When the one end of the cylinder portion 121 is inserted into the first opening 11a, the connecting portion 122 protruding from the outer periphery of the cylinder portion 121 can abut against the outer surface of the heat exchange assembly 11 to limit the movement of the cylinder portion 121 toward the direction close to the cooling channel 11b, so as to guarantee the ability of the cylinder portion 121 to communicate with the external cooling pipeline.

[0098] It can be understood that, on the one hand, the insertion of the cylinder portion 121 into the first opening 11a can facilitate the positioning when the faucet connector 12 is bonded with the heat exchange assembly 11, and can improve the assembly precision of the faucet connector 12 and the heat exchange assembly 11; on the other hand, the protruding connecting portion 122 can increase the area of the second connecting surface 12b, and further improve the bonding strength of the faucet connector 12 and the heat exchange assembly 11.

[0099] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or at least two embodiments or examples. In addition, the different embodiments or examples described in the present application and the features of the different embodiments or examples can be combined by those skilled in the art without contradiction.

[0100] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery device, characterized by, The application relates to a battery device, comprising: a heat exchange assembly having a cooling channel and a first opening in communication with each other, an outer surface of the heat exchange assembly having a first connecting surface around the first opening; a water nozzle connector having a second opening in communication with the first opening and a second connecting surface around the second opening, the first connecting surface and the second connecting surface being bonded to achieve connection of the water nozzle connector and the heat exchange assembly; wherein the water nozzle connector and / or the heat exchange assembly is provided with overflow grooves for accommodating overflow adhesive from the connection between the first connecting surface and the second connecting surface.

2. The battery device according to claim 1, characterized by The water nozzle connector is provided with overflow grooves, and the overflow grooves have grooves formed on the second connecting surface.

3. The battery device of claim 2, wherein, The overflow grooves surround the second opening.

4. The battery device of claim 2, wherein The overflow grooves are in a plurality and are distributed in a radial manner.

5. The battery device of claim 4, wherein, The overflow grooves extend in a corrugated manner.

6. The battery device of claim 1, wherein The outer surface of the heat exchange assembly is partially provided with a groove, the groove comprising a groove bottom wall and a groove side wall, the first opening being arranged on the groove bottom wall, at least part of the groove bottom wall forming the first connecting surface, a part of the water nozzle connector extending into the groove, and a region between an outer circumferential surface of the water nozzle connector and the groove side wall forming the overflow groove.

7. The battery device of claim 1, wherein At least part of the first connecting surface is provided with a concave indentation; and / or, at least part of the second connecting surface is provided with a concave indentation.

8. The battery device according to any one of claims 1 to 7, wherein The heat exchange assembly comprises a first plate body and a second plate body, the first plate body and the second plate body enclosing the cooling channel, the first opening penetrating the first plate body, and a surface of a side of the first plate body away from the second plate body at least partially forming the first connecting surface.

9. The battery device according to any one of claims 1 to 7, wherein The water nozzle connector comprises a barrel portion and a connecting portion, one end of the barrel portion being inserted into the first opening, the connecting portion surrounding an outer periphery of the barrel portion and protruding radially from an outer circumferential surface of the barrel portion; and at least part of a surface of a side of the connecting portion facing the first opening at least partially forming the second connecting surface.

10. An electrical device, characterized by The application further relates to a battery device for providing electric energy, comprising any one of the battery devices according to claims 1-9.

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