Battery device and electric appliance

Abstract

The application discloses a battery device and an electric equipment. The battery device comprises an upper layer battery pack, a lower layer battery pack and / or components and elements, the lower layer battery pack and / or components and elements are located below the upper layer battery pack; a mounting piece, the mounting piece comprises a mounting part and a liquid collecting space, the upper layer battery pack is mounted on the mounting part, and the liquid collecting space is used for collecting liquid of the upper layer battery pack. According to the battery device designed by the application, the mounting piece with the liquid collecting space and the mounting part is designed, the liquid collecting space is arranged close to the mounting part, liquid of the upper layer battery pack can be collected conveniently and cannot leak out, the problem that the lower layer battery pack and / or components and elements are ignited by arc caused by liquid leakage of the upper layer battery pack is solved, and the safety of the battery device is improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to battery devices and electrical equipment. Background Technology

[0002] In related technologies, the battery pack includes a double-layer module. The upper module cell is connected and fixed to the cooling plate by thermally conductive adhesive. The cooling plate is connected to the lower module by thermally conductive adhesive. Liquid absorbent cotton is added to the lower module. When the upper module cell fails and causes electrolyte leakage, it will flow onto the liquid absorbent cotton to prevent short circuit between the upper and lower module cells. However, there is still a risk of short circuit and arcing. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a battery device. The battery device designed according to this invention, by designing a mounting component with a liquid collection space and a mounting portion, wherein the liquid collection space is positioned adjacent to the mounting portion, facilitates the collection of liquid from the upper battery pack without leakage, thus solving the problem of arcing and fire in the lower battery pack and / or components caused by leakage from the upper battery pack, and improving the safety of the battery device.

[0004] According to a battery device of the present invention, the battery device includes: an upper battery pack; a lower battery pack and / or components located below the upper battery pack; and a mounting member including a mounting portion and a liquid collection space, wherein the upper battery pack is mounted on the mounting portion and the liquid collection space is used to collect liquid from the upper battery pack.

[0005] The battery device designed according to the present invention has a mounting component with a liquid collection space and a mounting part. The liquid collection space is located close to the mounting part, which facilitates the collection of liquid from the upper battery pack and prevents leakage. This solves the problem of arcing and fire of the lower battery pack and / or components caused by leakage from the upper battery pack, thus improving the safety of the battery device. At the same time, the upper battery pack is installed in the mounting part, eliminating the need for a separate mounting structure and improving the space utilization of the battery device.

[0006] According to some embodiments of the present invention, the mounting portion is configured as a mounting hole, and the upper battery pack is detachably mounted in the mounting hole; and / or, The liquid collection space is constructed as at least one liquid collection tank, which is connected to the upper battery pack.

[0007] According to some embodiments of the present invention, the battery device further includes a lower housing, the lower housing having a receiving cavity, the lower battery pack and / or the components being located within the receiving cavity, and the mounting member being fixedly connected to the lower housing, or the mounting member being integrally formed with the lower housing.

[0008] According to some embodiments of the present invention, the battery device further includes a detection element and a switching element, wherein the upper battery pack and the lower battery pack and / or the components are electrically connected to form a high-voltage circuit, the detection element is used to detect the resistance value of the mounting component and / or the lower housing, and the switching element is used to disconnect the high-voltage circuit according to the detection information of the detection element.

[0009] According to some embodiments of the present invention, at least one end of the upper battery pack along a first direction is provided with an explosion-proof valve, and / or electrode terminals, and / or a liquid injection structure, and the liquid collection space is located at the corresponding end of the upper battery pack.

[0010] According to some embodiments of the present invention, at least one end of the upper battery pack is provided with at least two mounting portions, the mounting portions are mounted on the mounting portion, the two mounting portions protrude from the explosion-proof valve and / or the electrode terminal and / or the liquid injection structure along the first direction, and are located on both sides of the explosion-proof valve and / or the electrode terminal and / or the liquid injection structure along the second direction, the first direction and the second direction intersect.

[0011] According to some embodiments of the present invention, the battery device further includes a support plate disposed between the upper battery pack and the lower battery pack and / or the components. The support plate protrudes from the explosion-proof valve, and / or the electrode terminal, and / or the liquid injection structure along the first direction. The end face of at least one end of the upper battery pack, the assembly portion, and the support plate form a first liquid guiding path, which communicates with the liquid collection space.

[0012] According to some embodiments of the present invention, the upper battery pack and the support plate are connected by an adhesive, wherein along the first direction, the adhesive is flush with the end face of at least one end of the upper battery pack, or the adhesive extends beyond the end face of at least one end of the upper battery pack; and / or, The support plate has a heat exchange channel inside. The upper battery pack and the support plate are bonded together with thermally conductive adhesive, and / or the lower battery pack and / or the components and the support plate are bonded together with thermally conductive adhesive.

[0013] According to some embodiments of the present invention, the battery device further includes a mounting block and a connector, the connector being sequentially disposed through the assembly portion, the mounting block, the support plate, and the mounting portion, the end face of at least one end of the upper battery pack, the assembly portion, the colloid, the mounting block, and the support plate forming the first liquid guiding path.

[0014] According to some embodiments of the present invention, the number of mounting components is at least two, the mounting components are correspondingly arranged with the assembly part, and the first liquid guiding path connects at least two of the liquid collection spaces.

[0015] According to some embodiments of the present invention, the battery device further includes a lower housing, the lower housing having a receiving cavity, the lower battery pack and / or the components being located within the receiving cavity, the lower housing having a first support platform protruding towards the upper battery pack, the mounting members being connected to the lower housing and located on both sides of the first support platform along the second direction, the support plate being connected to the first support platform, the end face of the first support platform along the first direction and the top surface of the lower housing forming a second liquid guiding path, the second liquid guiding path connecting the first liquid guiding path and the liquid collection space; and / or, The support plate is provided with at least two liquid guiding protrusions, with one end of each of the at least two liquid guiding protrusions close to each other and the other end far from each other, and each facing the corresponding liquid collection space.

[0016] According to some embodiments of the present invention, the end face of the first support platform along the first direction is flush with the end face of the support plate along the first direction; and / or, The mounting component has a notch at one end opposite to the mounting part along the first direction. The notch communicates with the liquid collection space. The end face of the first support platform along the first direction is flush with the end face of the notch along the first direction. The top surface of the lower shell is flush with the top surface of the notch.

[0017] According to some embodiments of the present invention, the battery device further includes a lower housing and a support plate. The lower housing has a receiving cavity, and the lower battery pack and / or the components are located in the receiving cavity. The support plate is disposed between the upper battery pack and the lower battery pack and / or the components. The lower housing includes a plurality of side beams, and at least one of the side beams has a second support platform protruding toward the support plate. The support plate is connected to the second support platform.

[0018] According to some embodiments of the present invention, the battery device further includes an upper housing, which is sealed to the top surface of the lower housing, and the upper battery pack, the lower battery pack, and / or the components are located between the lower housing and the upper housing; and / or, The upper housing has a receiving protrusion protruding away from the lower housing, and the upper battery pack is located within the receiving protrusion.

[0019] The electrical device according to a second aspect of the present invention includes a battery device according to any embodiment of the first aspect.

[0020] The electrical equipment according to the present invention has high safety and high space utilization because it is equipped with the battery device of the above embodiment.

[0021] In summary, by designing a mounting component with a liquid collection space and a mounting section, and with the liquid collection space and mounting section positioned adjacent to each other, it is convenient to collect the liquid from the upper battery pack without leakage. This solves the problem of arcing and fire in the lower battery pack and / or components caused by leakage from the upper battery pack, thus improving the safety of the battery device. At the same time, the upper battery pack is installed in the mounting section, eliminating the need for a separate mounting structure and improving the space utilization of the battery device.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a battery device according to an embodiment of the present invention.

[0024] Figure 2 This is a partial enlarged view of a battery device according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the mounting component according to an embodiment of the present invention.

[0026] Figure 4 This is a partial schematic diagram of a support plate according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the lower housing according to an embodiment of the present invention. Figure label: Battery device 100; Upper battery pack 1; Explosion-proof valve 11; Liquid injection structure 12; Assembly part 13; Outer shell 14; Lower battery pack 2; Mounting component 3; Mounting part 31; Liquid collection space 32; Notch 33; Lower shell 4; receiving cavity 41; bottom plate 42; side beam 43; first support platform 44; second support platform 45; Support plate 5; heat exchange channel 51; liquid guiding protrusion 52; First liquid guiding path 6; colloid 7; mounting block 8; second liquid guiding path 9; seal 10. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In related technologies, existing battery packs include a double-layer module. The upper module cells are connected and fixed to a cooling plate by thermally conductive adhesive. The cooling plate is connected to the lower module by thermally conductive adhesive. A liquid-absorbing cotton is added to the end of the lower module. When the upper module cell fails and causes electrolyte leakage, it will flow onto the liquid-absorbing cotton to prevent short circuit between the upper and lower module cells. This design can isolate the electrolyte when faced with a small amount of electrolyte. However, when faced with a large amount of electrolyte leakage (about 25ml of free electrolyte per cell), the electrolyte will still flow into the lower module after accumulation, and there is still a risk of short circuit and arcing between the upper and lower modules.

[0034] The following is for reference. Figures 1-5 A battery device 100 according to an embodiment of the present invention is described.

[0035] The battery device 100 according to the present invention includes an upper battery pack 1; a lower battery pack 2 and / or components located below the upper battery pack 1; and a mounting member 3, which includes a mounting portion 31 and a liquid collection space 32. The upper battery pack 1 is mounted on the mounting portion 31, and the liquid collection space 32 is used to collect liquid from the upper battery pack 1. Specifically, the battery device 100 can be a battery module, a battery pack, an integrated chassis, etc., and this application does not limit this. The upper battery pack 1 and / or the lower battery pack 2 may include multiple individual batteries stacked together and fitted with a housing 14. The housing 14 may include an assembly portion 13 for mounting and fixing with the mounting member 3. In other embodiments, the upper battery pack 1 and / or the lower battery pack 2 may include a housing 14, which has multiple cavities. Each cavity contains an electrode core and electrolyte, etc., which together form a large battery. The upper battery pack 1, lower battery pack 2, and / or components are stacked, with the upper battery pack 1 above the lower battery pack 2 and / or components. In the prior art, when the upper battery pack 1 malfunctions and causes electrolyte leakage, the liquid flows to the lower battery pack 2 and / or components below, causing short circuits and arcing. At this time, the mounting part 3 integrates mounting and liquid collection functions. The mounting part 31 is used to mount the upper battery pack 1, and the liquid collection space 32 is used to collect the leaked liquid. The liquid collection space 32 is set adjacent to the mounting part 31, making it easier to collect the leaked liquid and preventing it from being exposed. This achieves physical isolation of the leaked liquid and prevents the liquid from directly contacting the lower battery pack 2 and / or components, thereby effectively blocking the short circuit, arcing, and thermal runaway chain reaction caused by electrolyte conductivity. This significantly improves the intrinsic safety level of the battery pack under extreme conditions such as collision, overcharging, and thermal abuse. At the same time, no additional support structure is required, improving the space utilization of the battery device 100. Specifically, the upper battery pack 1 and the mounting part 31 can be connected by screws, snap-fits, welding, or adhesive. The mounting part 3 can be placed between the upper battery pack 1, the lower battery pack 2, and / or components to support the upper battery pack 1. In a specific embodiment of this application, the mounting part 3 is placed on both sides of the lower battery pack 2 and below the upper battery pack 1. This way, the mounting part 3 does not occupy the space in the height direction of the battery device 100. A cold plate can also be placed between the upper battery pack 1, the lower battery pack 2, and / or components for heat exchange, further improving the space utilization of the battery device 100. In other embodiments, the mounting part 31 can also be placed above the lower battery pack 2 for hoisting the upper battery pack 1.The liquid collection space 32 can be constructed as a liquid collection tank on the mounting component 3, or a liquid collection bag fitted on the mounting component 3, etc. There are no restrictions here. The opening of the liquid collection tank or liquid collection bag faces the upper battery pack 1 to facilitate the collection of leaked liquid. Alternatively, a liquid guide pipe, liquid guide funnel or other liquid guide path can be provided between the opening of the liquid collection tank or liquid collection bag and the upper battery pack 1. Alternatively, the liquid collection space 32 can be located in the area directly below the explosion-proof valve 11, liquid injection structure 12 or electrode terminal of the upper battery pack 1 to facilitate the introduction of leaked liquid from the upper battery pack 1 into the liquid collection tank or liquid collection bag to achieve liquid collection.

[0036] According to the battery device 100 of the present invention, by designing a mounting member 3 having a liquid collection space 32 and a mounting part 31, the liquid collection space 32 can collect the liquid of the upper battery pack 1, which solves the problem of arcing and fire of the lower battery pack 2 and / or components caused by leakage of the upper battery pack 1, and improves the safety of the battery device 100. At the same time, the upper battery pack 1 is mounted on the mounting part 31, eliminating the need for a separate mounting structure and improving the space utilization of the battery device 100.

[0037] According to some embodiments of the present invention, the mounting part 31 is configured as a mounting hole, and the upper battery pack 1 is detachably mounted in the mounting hole. Detachable mounting of the upper battery pack 1 in the mounting hole facilitates the installation and removal of the upper battery pack 1. Specifically, the mounting hole can be a threaded hole, and the outer casing 14 of the upper battery pack 1 and the mounting hole are detachably connected by bolts; or the mounting hole can be a snap-fit ​​hole, and the outer casing 14 of the upper battery pack 1 and the mounting hole are snap-fitted together. This application does not limit this to any particular type.

[0038] According to some embodiments of the present invention, the liquid collection space 32 is constructed as at least one liquid collection tank, which is connected to the upper battery pack 1. Specifically, the liquid collection tank is preferably a U-shaped, V-shaped groove or through groove extending along the height direction of the battery device 100. The bottom of the tank can also be provided with an inclination angle, such as 3°~8°, to guide the liquid to converge towards the end of the liquid collection tank under the action of gravity, which can quickly collect the liquid. Moreover, the manufacturing process of the liquid collection tank is simple, reducing costs. In the embodiments of this application, there are multiple liquid collection tanks, which are arranged at intervals. When one liquid collection tank is full, it can overflow into other liquid collection tanks, or multiple liquid collection tanks can collect liquid simultaneously, improving the accuracy and efficiency of liquid collection.

[0039] According to some embodiments of the present invention, the battery device 100 further includes a lower housing 4, which has a receiving cavity 41. The lower battery pack 2 and / or components are located within the receiving cavity 41. The mounting member 3 is fixedly connected to the lower housing 4, or the mounting member 3 is integrally formed with the lower housing 4. Specifically, the lower housing 4 may include a base plate 42 and a side beam 43 surrounding the base plate 42. The base plate 42 and the side beam 43 enclose the receiving cavity 41, where the lower battery pack 2 and / or components are located, facilitating the protection of the lower battery pack 2 and / or components. In other embodiments, the height of the side beam 43 may be flush with or exceed that of the upper battery pack 1, so as to provide lateral protection for the upper battery pack 1 as well. The mounting member 3 may be fixedly connected to the base plate 42 and / or the side beam 43 by welding, screwing, bonding, etc., or the mounting member 3 and the side beam 43 may be an integral piece, i.e., the liquid collection space 32 is defined by the lower housing 4, which facilitates the installation and manufacturing of the mounting member 3. In other embodiments, the base plate 42 and / or the side beam 43 may be provided with a drainage structure, such as a drainage valve, which is connected to the liquid collection space 32 so that when there is too much liquid in the liquid collection space 32, the liquid can be discharged to the outside of the battery device 100, thereby further improving safety.

[0040] According to some embodiments of the present invention, the battery device 100 further includes a detection element and a switching element. The upper battery pack 1 and the lower battery pack 2 and / or components are electrically connected to form a high-voltage circuit. The detection element is used to detect the resistance value of the mounting part 3 and / or the lower housing 4, and the switching element is used to disconnect the high-voltage circuit according to the detection information of the detection element. Specifically, the upper battery pack 1 and the lower battery pack 2 and / or components are connected to form a high-voltage circuit through a connecting drain. The detection element can be a resistance sensor, attached to the bottom of the mounting part 3 or the surface of the inner wall of the lower housing 4, and in direct contact with the bottom of the liquid collection space 32. The switching element can be a relay or a high-voltage contactor. Both the detection element and the switching element can communicate with the BMS system of the battery device 100 to realize signal detection and transmission. When the electrolyte leaks and accumulates in the liquid collection space 32, the liquid, as an electrolyte, causes the resistance value at both ends of the detection element to drop rapidly, for example, from an initial value >10MΩ to a value <100kΩ. At this time, the switching element can be triggered to disconnect the high-voltage circuit within a certain period of time, for example, within 50ms. The detection mechanism of this application has a fast response. In some embodiments, the detection element and switching element can be linked with the BMS system to achieve graded alarms, such as triggering an early warning when the resistance drops to 1MΩ and immediately cutting off power when it falls below 100kΩ. In some embodiments, multiple detection elements can be set, with multiple detection elements set around and at the bottom of the liquid collection space 32 to achieve multi-point redundant monitoring and avoid detection failure due to single-point failure.

[0041] According to some embodiments of the present invention, the upper battery pack 1 is provided with an explosion-proof valve 11, and / or electrode terminals, and / or liquid injection structure 12 at at least one end along the first direction X, and the liquid collection space 32 is located at the corresponding end of the upper battery pack 1. Specifically, the upper battery pack 1 may include multiple individual cells, which are stacked and arranged along the second direction Y. As an example, the first direction X may be the length direction of the upper battery pack 1, and the second direction Y may be the width direction of the upper battery pack 1. The length direction of the individual cells is parallel to the length direction of the upper battery pack 1. The individual cells are provided with an explosion-proof valve 11, and / or electrode terminals, and / or liquid injection structure 12 at at least one end along the first direction X. It is understood that the explosion-proof valve 11, electrode terminals, or liquid injection structure 12 are places prone to leakage. If a single cell experiences thermal runaway, the explosion-proof valve 11 may spray gas and liquid, or the electrode terminals or the liquid injection structure 12 may fail to seal, leading to leakage. In such cases, the liquid collection space 32 is placed at one end of the upper battery pack 1 along the first direction X where the explosion-proof valve 11 and / or the electrode terminals and / or the liquid injection structure 12 are located. If the upper battery pack 1 has explosion-proof valves 11 and / or electrode terminals and / or liquid injection structures 12 at both ends along the first direction X, then multiple mounting parts 3 or liquid collection spaces 32 can be provided, respectively located at both ends of the upper battery pack 1 along the first direction X.

[0042] According to some embodiments of the present invention, at least one end of the upper battery pack 1 is provided with at least two mounting portions 13. The mounting portions 13 are mounted on the mounting portion 31. The two mounting portions 13 protrude from the explosion-proof valve 11 and / or electrode terminals and / or liquid injection structure 12 along a first direction X, and are located on both sides of the explosion-proof valve 11 and / or electrode terminals and / or liquid injection structure 12 along a second direction Y. Specifically, the mounting portions 13 are rib structures extending from both sides of the outer shell 14 of the upper battery pack 1. Their height along the first direction X is higher than the highest point of the explosion-proof valve 11, electrode terminals, or liquid injection structure 12, forming a "fence-like" physical barrier. The mounting portions 13 cooperate with the mounting holes of the mounting portion 31 through snaps or bolts to ensure that after the upper battery pack 1 is installed, the leakage source of the upper battery pack 1 is always inside the two mounting portions 13, so that the liquid can be accurately guided to the liquid collection space 32.

[0043] According to some embodiments of the present invention, the battery device 100 further includes a support plate 5, which is disposed between the upper battery pack 1 and the lower battery pack 2 and / or components. The support plate 5 protrudes along a first direction X from the explosion-proof valve 11, and / or electrode terminals, and / or liquid injection structure 12. The end face of at least one end of the upper battery pack 1, the assembly part 13, and the support plate 5 form a first liquid guiding path 6, which connects to the liquid collection space 32. Specifically, the length of the support plate 5 along the first direction X is greater than the highest point of the explosion-proof valve 11, the electrode terminals, or the liquid injection structure 12, that is, the support plate 5 can catch the liquid leaking from the explosion-proof valve 11, the electrode terminals, or the liquid injection structure 12, and forms a three-sided enclosed first liquid guiding path 6 with the two assembly parts 13. The first liquid guiding path 6 directly connects to the liquid collection space 32, realizing a seamless flow from the leakage source to the liquid collection space 32.

[0044] According to some embodiments of the present invention, the upper battery pack 1 and the support plate 5 are connected by an adhesive 7. Along the first direction X, the adhesive 7 is flush with the end face of at least one end of the upper battery pack 1, or the adhesive 7 extends beyond the end face of at least one end of the upper battery pack 1. Specifically, the adhesive 7 can be a high-viscosity, low-modulus sealant resistant to electrolyte corrosion, or a thermally conductive adhesive that can absorb vibration stress or conduct heat to prevent interface cracking caused by thermal expansion and contraction. When the adhesive 7 is flush with the end face of the upper battery pack 1, a smooth transition surface is formed, reducing liquid retention; when the adhesive 7 extends beyond the end face, a "liquid seal" can be formed, actively intercepting the liquid flowing down the end face and guiding it into the first liquid guiding path 6.

[0045] According to some embodiments of the present invention, a heat exchange channel 51 is provided inside the support plate 5. The upper battery pack 1 and the support plate 5 are bonded together with thermally conductive adhesive, and / or, the lower battery pack 2 and / or components are bonded to the support plate 5 with thermally conductive adhesive. Specifically, a serpentine heat exchange channel 51 with a circular cross-section can be provided inside the support plate 5, which is connected to the coolant pipeline of the battery device 100 to achieve coordinated thermal management between the upper battery pack 1 and the lower battery pack 2. The thermally conductive adhesive can be an alumina-filled epoxy resin system with a thermal conductivity ≥2.5W / (m·K) to ensure a continuous heat conduction path. The support plate 5 and the lower battery pack 2 are also bonded together with thermally conductive adhesive to form a "sandwich" thermal management structure, improving the overall heat dissipation efficiency. In this embodiment, the support plate 5 can be formed by brazing a flow channel plate and a heat exchange plate together. The flow channel plate can be provided with a serpentine flow channel structure. The heat exchange plate is constructed as a flat plate and is brazed with the flow channel plate to close the serpentine flow channel structure to form a serpentine heat exchange channel 51.

[0046] According to some embodiments of the present invention, the battery device 100 further includes a mounting block 8 and a connector. The connector passes through the assembly part 13, the mounting block 8, the support plate 5, and the mounting part 31 in sequence. The end face of at least one end of the upper battery pack 1, the assembly part 13, the colloid 7, the mounting block 8, and the support plate 5 form a first liquid guiding path 6. Specifically, the connector can be a bolt, passing through the assembly part 13, the mounting block 8, the support plate 5, and the mounting part 31 to form a mechanical fastening chain. The mounting block 8 creates a gap between the assembly part 13 and the support plate 5, forming a buffer and improving service life. At this time, the colloid 7 needs to fill the gap between the assembly part 13 and the support plate 5, while forming a liquid barrier layer. The first liquid guiding path 6 is formed by the end face, the assembly part 13, the colloid 7, the mounting block 8, and the support plate 5, forming a "five-layer sealed flow guiding cavity". Liquid can only flow downward along a preset path in this cavity and flow to the liquid collection space 32, and cannot penetrate laterally, improving the liquid collection efficiency and accuracy, thereby improving safety.

[0047] According to some embodiments of the present invention, the number of mounting members 3 is at least two, and the mounting members 3 are correspondingly arranged with the assembly parts 13. The first liquid guiding path 6 connects at least two liquid collection spaces 32. Specifically, the upper battery pack 1 is provided with two independent mounting members 3 at at least one end along the first direction X, corresponding to two assembly parts 13, forming a double liquid collection structure. The first liquid guiding path 6 connects to two liquid collection spaces 32 at both ends of the second direction Y, respectively, to achieve symmetrical collection and increase the amount of liquid collected. In some embodiments, the liquid collection spaces 32 can be connected to achieve liquid exchange, ensuring that when any liquid collection space 32 is full, the liquid can be automatically transferred to an adjacent space to avoid overflow.

[0048] According to some embodiments of the present invention, the support plate 5 is provided with at least two liquid guiding protrusions 52, one end of each of the at least two liquid guiding protrusions 52 being close to each other and the other end being far from each other and respectively facing the corresponding liquid collection space 32. Specifically, two liquid guiding protrusions 52 are provided on the top of the support plate 5, the cross-section of which can be semi-circular and distributed in a "V" shape along the second direction Y. The root of the protrusion is smoothly transitioned to the support plate 5. The liquid guiding protrusions 52 not only enhance the strength of the support plate 5, but their outer inclined surfaces also serve as guiding surfaces, guiding the leaked liquid to slide down along the outer edge of the protrusion to the liquid collection space 32, thus realizing the integration of "enhancement + liquid guiding" functions.

[0049] According to some embodiments of the present invention, the battery device 100 further includes a lower housing 4, the lower housing 4 having a receiving cavity 41, the lower battery pack 2 and / or components being located within the receiving cavity 41, the lower housing 4 having a first support platform 44 protruding towards the upper battery pack 1, the mounting member 3 being connected to the lower housing 4 and located on both sides of the first support platform 44 along the second direction Y, the support plate 5 being connected to the first support platform 44, the end face of the first support platform 44 along the first direction X and the top surface of the lower housing 4 forming a second liquid guiding path 9, the second liquid guiding path 9 connecting the first liquid guiding path 6 and the liquid collection space 32. Specifically, the first support platform 44 can be a rectangular boss integrally formed or welded on the top surface of the lower housing 4, extending along the second direction Y and located between the two mounting parts 3. The support plate 5 can be connected to the first support platform 44 by means of screwing, welding or bonding. The end face of the first support platform 44 and the top surface of the lower housing 4 form an "L"-shaped liquid guiding groove, which serves as the second liquid guiding path 9, guiding the liquid at the end of the first liquid guiding path 6 to the inlet of the liquid collecting space 32, that is, guiding the liquid at the end of the support plate 5 to the inlet of the liquid collecting space 32, thereby improving the stability of the liquid guiding.

[0050] According to some embodiments of the present invention, the end face of the first support platform 44 along the first direction X is flush with the end face of the support plate 5 along the first direction X. The flushness of the end face of the first support platform 44 with the end face of the support plate 5 ensures that there are no steps obstructing the first support platform 44 and the support plate 5, that is, ensures that there are no steps obstructing the first liquid guiding path 6 and the second liquid guiding path 9, and the liquid can flow smoothly into the liquid collection space 32.

[0051] According to some embodiments of the present invention, the mounting member 3 has a notch 33 at one end opposite to the mounting portion 31 along the first direction X. The notch 33 communicates with the liquid collection space 32. The end face of the first support platform 44 along the first direction X is flush with the end face of the notch 33 along the first direction X, and the top surface of the lower housing 4 is flush with the top surface of the notch 33. Specifically, a rectangular notch 33 is provided at the position where the mounting member 3 connects with the first support platform 44. The notch 33 can increase the collection diameter of the liquid collection space 32 and improve the collection efficiency. The depth of the notch 33 is the same as that of the first support platform 44, and the top of the notch 33 is flush with the top surface of the lower housing 4. This design eliminates the "dead zone" and eddies in the liquid flow, further improves the collection efficiency, and prevents liquid overflow.

[0052] According to some embodiments of the present invention, the battery device 100 further includes a lower housing 4 and a support plate 5. The lower housing 4 has a receiving cavity 41, in which the lower battery pack 2 and / or components are located. The support plate 5 is disposed between the upper battery pack 1 and the lower battery pack 2 and / or components. The lower housing 4 includes a plurality of side beams 43, and at least one side beam 43 has a second support platform 45 protruding towards the support plate 5. The support plate 5 is connected to the second support platform 45. Specifically, the lower housing 4 includes four side beams 43, and the second support platform 45 protrudes from the inner side of the side beams 43. The second support platform 45 can be a rectangular boss integrally formed or welded to the top surface of the lower housing 4, used to support the sides of the support plate 5, so that the support plate 5 forms a "four-sided support" structure, improving the overall rigidity, preventing the middle part from sagging due to the weight of the upper battery pack 1, and effectively suppressing structural deformation.

[0053] According to some embodiments of the present invention, the battery device 100 further includes an upper housing, which is sealed to the top surface of the lower housing 4. The upper battery pack 1, the lower battery pack 2, and / or components are located between the lower housing 4 and the upper housing. Specifically, the side beams 43 of the upper housing and the lower housing 4 are sealed together by a sealing element 10, such as sealant or sealing foam, to enclose the upper battery pack 1, the lower battery pack 2, and / or components internally, forming a protective layer. In some embodiments, the upper housing may be constructed as a flat plate and fitted to the top surface of the lower housing 4. In the embodiments of this application, the width of the upper battery pack 1 along the second direction Y is smaller than the width of the lower battery pack 2 along the second direction Y. The upper housing has a receiving protrusion protruding away from the lower housing 4, and the upper battery pack 1 is located within the receiving protrusion. This reduces the overall height of the lower housing 4, lowers the cost, and increases the capacity.

[0054] The electrical device according to a second aspect embodiment of the present invention includes a battery device 100 according to any embodiment of the first aspect. The electrical device may be a car, aircraft, ferry, computer, etc., and is not limited thereto. According to the present invention, the electrical device, due to the inclusion of the battery device 100 of the above embodiment, has high safety and high space utilization.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification. Although embodiments of the invention have been shown and described above, variations, modifications, substitutions, and alterations can be made to the above embodiments.

Claims

1. A battery device (100), characterized in that, include: Upper battery pack (1); The lower battery pack (2) and / or components are located below the upper battery pack (1); Mounting component (3), which includes mounting part (31) and liquid collection space (32), wherein the upper battery pack (1) is mounted on the mounting part (31) and the liquid collection space (32) is used to collect liquid from the upper battery pack (1).

2. The battery device (100) according to claim 1, characterized in that, The mounting portion (31) is configured as a mounting hole, and the upper battery pack (1) is detachably mounted in the mounting hole; and / or, The liquid collection space (32) is constructed as at least one liquid collection tank, which is connected to the upper battery pack (1).

3. The battery device (100) according to claim 1, characterized in that, The battery device (100) further includes a lower housing (4), which has a receiving cavity (41). The lower battery pack (2) and / or the components are located in the receiving cavity (41). The mounting member (3) is fixedly connected to the lower housing (4), or the mounting member (3) is integrally formed with the lower housing (4).

4. The battery device (100) according to claim 3, characterized in that, The battery device (100) further includes a detection element and a switching element. The upper battery pack (1) and the lower battery pack (2) and / or the components are electrically connected to form a high-voltage circuit. The detection element is used to detect the resistance of the mounting part (3) and / or the lower housing (4). The switching element is used to disconnect the high-voltage circuit according to the detection information of the detection element.

5. The battery device (100) according to claim 1, characterized in that, The upper battery pack (1) is provided with an explosion-proof valve (11) and / or electrode terminals and / or liquid injection structure (12) at at least one end along the first direction, and the liquid collection space (32) is located at the corresponding end of the upper battery pack (1).

6. The battery device (100) according to claim 5, characterized in that, The upper battery pack (1) has at least two mounting parts (13) at at least one end. The mounting parts (13) are mounted on the mounting part (31). The two mounting parts (13) protrude from the explosion-proof valve (11), and / or the electrode terminal, and / or the liquid injection structure (12) along the first direction, and are located on both sides of the explosion-proof valve (11), and / or the electrode terminal, and / or the liquid injection structure (12) along the second direction. The first direction and the second direction intersect.

7. The battery device (100) according to claim 6, characterized in that, The battery device (100) further includes a support plate (5), which is disposed between the upper battery pack (1) and the lower battery pack (2) and / or the components. The support plate (5) protrudes from the explosion-proof valve (11) and / or the electrode terminal and / or the liquid injection structure (12) along the first direction. The end face of at least one end of the upper battery pack (1), the assembly part (13) and the support plate (5) form a first liquid guiding path (6), which connects to the liquid collection space (32).

8. The battery device (100) according to claim 7, characterized in that, The upper battery pack (1) and the support plate (5) are connected by an adhesive (7), wherein, along the first direction, the adhesive (7) is flush with the end face of at least one end of the upper battery pack (1), or the adhesive (7) extends beyond the end face of at least one end of the upper battery pack (1); and / or, The support plate (5) is provided with a heat exchange channel (51). The upper battery pack (1) and the support plate (5) are bonded together by thermally conductive adhesive, and / or the lower battery pack (2) and / or the components and the support plate (5) are bonded together by thermally conductive adhesive.

9. The battery device (100) according to claim 8, characterized in that, The battery device (100) further includes a mounting block (8) and a connector, the connector being sequentially inserted through the assembly part (13), the mounting block (8), the support plate (5) and the mounting part (31), the end face of at least one end of the upper battery pack (1), the assembly part (13), the colloid (7), the mounting block (8) and the support plate (5) forming the first liquid guiding path (6).

10. The battery device (100) according to claim 8, characterized in that, The number of the mounting parts (3) is at least two, the mounting parts (3) are correspondingly arranged with the assembly part (13), and the first liquid guiding path (6) connects at least two of the liquid collection spaces (32).

11. The battery device (100) according to claim 10, characterized in that, The battery device (100) further includes a lower housing (4), which has a receiving cavity (41). The lower battery pack (2) and / or the components are located in the receiving cavity (41). The lower housing (4) has a first support platform (44) protruding towards the upper battery pack (1). The mounting member (3) is connected to the lower housing (4) and located on both sides of the first support platform (44) along the second direction. The support plate (5) is connected to the first support platform (44). The end face of the first support platform (44) along the first direction and the top surface of the lower housing (4) form a second liquid guiding path (9). The second liquid guiding path (9) connects the first liquid guiding path (6) and the liquid collection space (32); and / or, The support plate (5) has at least two liquid guiding protrusions (52), with one end of each of the at least two liquid guiding protrusions (52) close to each other and the other end far from each other and facing the corresponding liquid collection space (32).

12. The battery device (100) according to claim 11, characterized in that, The end face of the first support platform (44) along the first direction is flush with the end face of the support plate (5) along the first direction; and / or, The mounting component (3) has a notch (33) at one end away from the mounting part (31) along the first direction. The notch (33) is connected to the liquid collection space (32). The end face of the first support platform (44) along the first direction is flush with the end face of the notch (33) along the first direction. The top surface of the lower shell (4) is flush with the top surface of the notch (33).

13. The battery device (100) according to any one of claims 1-12, characterized in that, The battery device (100) further includes a lower housing (4) and a support plate (5). The lower housing (4) is provided with a receiving cavity (41). The lower battery pack (2) and / or the components are located in the receiving cavity (41). The support plate (5) is located between the upper battery pack (1) and the lower battery pack (2) and / or the components. The lower housing (4) includes a plurality of side beams (43). At least one of the side beams (43) protrudes towards the support plate (5) with a second support platform (45). The support plate (5) is connected to the second support platform (45).

14. The battery device (100) according to claim 13, characterized in that, The battery device (100) further includes an upper housing, which is sealed to the top surface of the lower housing (4), and the upper battery pack (1), the lower battery pack (2), and / or the components are located between the lower housing (4) and the upper housing; and / or, The upper housing has a receiving protrusion protruding away from the lower housing (4), and the upper battery pack (1) is located inside the receiving protrusion.

15. An electrical appliance, characterized in that, Includes the battery device (100) according to any one of claims 1-14.

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