Battery pack device and electric appliance

Abstract

The utility model belongs to battery technical field, concretely relates to a battery package device and electrical equipment, wherein, the battery package device includes box, battery package component and guide control component, is equipped with the separating component in the box, and is equipped with first storage cavity and second storage cavity between separating component and the box, the battery package component is connected in the inside of second storage cavity, first storage cavity is used for storing fire control flow material, and at least one flow through -hole is equipped in the separating component, and one end of guide control component is detachably connected in the inside of flow through -hole, the other end of guide control component is connected in the inner wall of second storage cavity at the box. The utility model can be favorable to avoid the phenomenon such as collision short circuit fire, and further improve the security of use and ensure the orderliness and stability of operation.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery pack device and electrical equipment. Background Technology

[0002] A lithium battery is a type of battery that uses lithium ions to charge and discharge between positive and negative electrodes. It is an important type of rechargeable battery and is widely used in various portable electronic devices, power tools, electric vehicles, and energy storage systems. A lithium battery module is an integrated device composed of multiple lithium battery cells. They are combined together to form a fully functional unit. This modular design makes it easier to integrate lithium battery modules into various new energy vehicles.

[0003] However, while existing lithium battery packs can provide some heat dissipation and cooling, the process of thermal runaway caused by impacts and other factors is very rapid. The lithium battery module will produce a large amount of gas that cannot be discharged quickly, making it easy to burn and explode in a short time, thus reducing the safety of use. Utility Model Content

[0004] The purpose of this utility model is to provide a battery pack device that addresses the shortcomings of existing technologies and solves the technical problem of low safety in the use of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery pack device includes a housing, a battery pack component, and a guide control component. The housing has a partition component, and a first storage cavity and a second storage cavity are provided between the partition component and the housing. The battery pack component is connected to the interior of the second storage cavity. The first storage cavity is used to store fire-fighting fluids. The partition component has at least one flow through-hole. One end of the guide control component is detachably connected to the interior of the flow through-hole, and the other end of the guide control component is connected to the inner wall of the housing located within the second storage cavity.

[0007] Preferably, the guiding control component includes a sealing mounting member and a limiting member; one end of the sealing mounting member is connected to the flow through hole; the other end of the sealing mounting member is connected to the limiting member; and the two ends of the limiting member respectively abut against the outer surface of the battery pack component and the inner sidewall of the housing.

[0008] Preferably, the sealing mounting component includes a sealing head and a push rod; the sealing head is detachably connected to the inner wall of the flow through hole; one end of the push rod is connected to the sealing head; and the other end of the push rod is connected to the limiting component.

[0009] Preferably, the sealing head includes a first sealing protrusion, a sealing connection portion, and a second sealing protrusion connected in sequence; the first sealing protrusion is disposed in the first storage cavity; the outer wall of the sealing connection portion is connected to the inner wall of the flow through hole; the second sealing protrusion is disposed in the second storage cavity and is connected to one end of the push rod.

[0010] Preferably, the limiting member includes a first connecting block, an elastic folding block, and a second connecting block arranged sequentially; and the first connecting block abuts against the inner sidewall of the housing; the second connecting block abuts against the outer surface of the battery pack component; the elastic folding block has a crease edge; and one end of the sealing mounting member is connected to the crease edge.

[0011] Preferably, the inner wall of the housing is provided with a limiting groove; the outer surface of the battery pack component is provided with a positioning element; the positioning element is provided with a positioning groove; the first connecting block is engaged with the inner wall of the limiting groove; and the second connecting block is engaged with the inner wall of the positioning groove.

[0012] Preferably, the positioning member includes a first positioning protrusion and a second positioning protrusion arranged side by side; the first positioning protrusion and the second positioning protrusion are respectively connected to the outer surface of the battery pack component; and the positioning groove is formed between the first positioning protrusion and the second positioning protrusion.

[0013] Preferably, the elastic fold block includes a first elastic inclined segment and a second elastic inclined segment that are inclined to each other; the crease edge is disposed between the first elastic inclined segment and the second elastic inclined segment; and the first elastic inclined segment is connected to the first connecting block; the second elastic inclined segment is connected to the second connecting block;

[0014] And / or, the elastic fold is provided with at least one buffer channel; the buffer channel extends through the thickness of the elastic fold.

[0015] Preferably, the inclination angle between the first elastic inclined segment and its horizontal plane is equal to the inclination angle between the second elastic inclined segment and its horizontal plane, and both are α;

[0016] Furthermore, α satisfies: 10°≤α≤30°.

[0017] This utility model also discloses an electrical device, including the battery pack device described above.

[0018] The beneficial effects of this utility model are as follows: This technical solution divides the box into a first storage cavity for storing fire-fighting materials and a second storage cavity for normal battery operation by using a separating component, thereby ensuring the stability and independence of the battery pack device's operation and improving the orderliness and safety of use; furthermore, a guide control component is detachably installed in the flow passage and on the inner wall of the second storage cavity, so that during normal use, the fire-fighting materials are stored statically in the first storage cavity; and in the event of dangerous situations such as fire or explosion, the guide control component separates from the flow passage to allow the fire-fighting materials to enter the second storage cavity, thereby helping to avoid collisions, short circuits, and fires; thus improving the safety of use and ensuring the orderliness and stability of operation. Attached Figure Description

[0019] The following will refer to the appendix. Figures 1-6 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a battery pack device according to an embodiment of the present invention;

[0021] Figure 2 This is a partial enlarged view of a battery pack device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the battery pack component and the guide control component of a battery pack device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the guide control component of a battery pack device according to an embodiment of the present invention;

[0024] Figure 5 This is a partial enlarged view of the battery pack components of a battery pack device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of an electrical device according to an embodiment of the present invention.

[0026] In the diagram: 100 - Housing; 110 - Dividing component; 111 - Flow passage; 101 - First storage cavity; 102 - Second storage cavity; 103 - Cover plate; 104 - Bottom shell; 200 - Battery pack component; 210 - Battery body; 220 - Support base plate; 230 - Limiting side plate; 240 - Limiting side frame; 244 - Positioning component; 241 - First positioning protrusion; 242 - First positioning protrusion; 243 - Positioning groove; 300 - Guide control component; 310 - Sealing... Sealing components; 311-Sealing head; 3111-First sealing protrusion; 3112-Sealing connection; 3113-Second sealing protrusion; 3114-Sealing groove; 312-Push rod; 320-Limiting component; 321-First connecting block; 322-Second connecting block; 323-Elastic folding block; 3231-Folded edge; 3232-First elastic inclined section; 3233-Second elastic inclined section; 3234-Buffer channel; 400-Fire-fighting mobile material; 500-Carrying component. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is intended to particularly describe embodiments and not to limit the scope of this application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the embodiment description, "multiple" refers to two or more, unless otherwise specifically defined.

[0029] The term 'embodiment' means that a particular feature, structure, or characteristic described exists in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can also refer to a mechanical connection or an electrical connection. They can be directly connected or indirectly connected through an intermediate medium, manifesting as internal communication between two components or an interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] The following is in conjunction with the appendix Figures 1-6 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0033] As shown in the figure, in one embodiment of this utility model, the battery pack device includes a housing 100, a battery pack component 200, and a guide control component 300. A partition component 110 is provided inside the housing 100, and a first storage cavity 101 and a second storage cavity 102 are provided between the partition component 110 and the housing 100. The battery pack component 200 is connected to the interior of the second storage cavity 102. The first storage cavity 101 is used to store fire-fighting fluid 400. The partition component 110 has at least one flow through hole 111, which penetrates the thickness of the partition component 110. One end of the guide control component 300 is detachably connected to the interior of the flow through hole 111, and the other end of the guide control component 300 is connected to the inner wall of the housing 100 located in the second storage cavity 102. The wires leading from the battery pack component 200 pass through the housing 100 from the inner top of the second storage cavity 102; and sealant is applied between the wires and the housing 100 to ensure the stability and continuity of the battery pack component 200's operation. Furthermore, the number of guide control components 300 corresponds to the number of flow through holes 111; there are two flow through holes 111, located on both sides of the partition component 110, to provide fire protection for the front and rear ends of the battery pack component 200.

[0034] The technical solution of this utility model divides the housing into a first storage cavity for storing fire-fighting materials and a second storage cavity for normal battery operation by using a separating component. This ensures the stability and independence of the battery pack device's operation, thereby improving the orderliness and safety of its use. Furthermore, a guide control component is detachably installed in the flow passage and on the inner wall of the second storage cavity. This allows the fire-fighting materials to be stored statically in the first storage cavity during normal use. In the event of a fire, explosion, or other dangerous situation, the guide control component separates from the flow passage, allowing the fire-fighting materials to enter the second storage cavity, thus helping to avoid collisions, short circuits, and fires. This further improves the safety of use and ensures the orderliness and stability of operation.

[0035] The battery pack component 200 includes at least one battery body 210. The battery body 210 includes a battery casing and a battery cell connected inside the battery casing. The battery cell includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a positive current collector and a positive active material layer, the positive active material layer being coated on the surface of the positive current collector. The positive current collector can be made of aluminum, and the positive active material layer includes a positive active material, such as lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector. The negative current collector can be made of copper, and the negative active material layer includes a negative active material, such as carbon or silicon. The separator can be made of PP (polypropylene) or PE (polyethylene).

[0036] Specifically, in some embodiments, the fire-fighting fluid 400 is selected from carbon-based silicone oil or fluorinated coolant. Fluorinated coolant is safe, non-toxic, has no flash point, is non-flammable, and poses no ignition hazard. It also has low surface tension, allowing for rapid diffusion on liquid surfaces and preventing foaming. This facilitates rapid diffusion of leaked electrolyte from the battery pack component 200, preventing foaming. Carbon-based silicone oil has good heat resistance. Dimethyl silicone oil exhibits extremely high chemical stability in air below 150°C, making it suitable for long-term industrial applications. However, when the temperature rises above 200°C, the methyl groups begin to undergo oxidation, leading to the formation of cross-linked structures. This significantly increases its viscosity, ultimately resulting in gelation for better fire-fighting performance.

[0037] Specifically, in some implementations, such as Figure 1 and 2 As shown, the housing 100 includes a cover plate 103 and a bottom shell 104; the cover plate 103 is connected to the opening of the bottom shell 104; and a partition member 110 is welded to the inner side wall of the bottom shell 104; the partition member 110, the inner top of the bottom shell 104, and the cover plate 103 form the first storage cavity 101; the partition member 110 and the inner bottom of the bottom shell 104 form the second storage cavity 102. (Not shown in the figure) The inner bottom of the bottom shell 104 is provided with an inspection port, and an inspection door is sealed and bonded inside the inspection port to achieve a sealing and protection function, and also to improve the convenience of disassembly and maintenance operations.

[0038] Specifically, in some implementations, such as Figure 1 and 2As shown, the guidance control component 300 includes a sealing mounting component 310 and a limiting component 320. One end of the sealing mounting component 310 is sealed and connected to the flow through hole 111. The other end of the sealing mounting component 310 extends to the second storage cavity 102 and is connected to the limiting component 320. The two ends of the limiting component 320 respectively abut against the outer surface of the battery pack component 200 and the inner wall of the housing 100. That is, when the housing 100 is subjected to a certain external force impact, the limiting component 320 moves or deforms, and at the same time, the sealing mounting component 310 is pulled out from the flow through hole 111, thereby causing the flow through hole 111 to be open and forming the discharge of fire-fighting flow material 400. This helps to avoid collision short circuits and fires, thus improving the safety of use and ensuring the orderliness and stability of operation.

[0039] In some implementation methods, such as Figure 2 and 3 As shown, the sealing mounting component 310 includes a sealing head 311 and a push rod 312. The sealing head 311 is securely engaged with the inner wall of the flow passage 111. One end of the push rod 312 (engaged by adhesive bonding or a T-shaped or F-shaped structure) is located in the mounting hole at the bottom of the sealing head 311. The other end of the push rod 312 (welded to) is located in the limiting component 320. This structure allows the sealing head 311 to separate from the flow passage 111 by pulling the push rod 312 downward, thereby promoting the flow passage 111 to open and facilitate the discharge of the fire-fighting flowing material 400. This helps to avoid collisions, short circuits, and fires, thus improving the safety of use and ensuring the orderly and stable operation.

[0040] In some implementation methods, such as Figure 3 As shown, the sealing head 311 includes a first sealing protrusion 3111, a sealing connecting portion 3112, and a second sealing protrusion 3113 connected sequentially from top to bottom. The first sealing protrusion 3111 is disposed in the first storage cavity 101; the outer wall of the sealing connecting portion 3112 is tightly connected to the inner wall of the flow through hole 111; the second sealing protrusion 3113 is disposed in the second storage cavity 102 and is connected to one end of the push rod 312. Furthermore, the bottom of the first sealing protrusion 3111 abuts against the upper surface of the separating member 110; the upper surface of the second sealing protrusion 3113 abuts against the lower surface of the separating member 110; a sealing groove 3114 is formed between the first sealing protrusion 3111, the sealing connecting portion 3112, and the second sealing protrusion 3113; and the separating member 110 is in the structure of the flow through hole 111 tightly connected to the inner wall of the sealing groove 3114. Preferably, the sealing head 311 is made of rubber material to improve sealing performance and ensure quick and easy separation.

[0041] Specifically, in some implementations, such as Figure 3As shown, the limiting member 320 includes a first connecting block 321, an elastic folding block 323, and a second connecting block 322 connected in sequence. The first connecting block 321 abuts against the inner wall of the housing 100; the second connecting block 322 abuts against the outer surface of the battery pack component 200; the elastic folding block 323 has a crease edge 3231; one end of the sealing mounting member 310 (the middle push rod 312) is connected to the crease edge 3231. That is, when subjected to external impact stress, the elastic folding block 323 is squeezed and folded along the crease edge 3231 in the middle to pull the push rod 312 downward, so as to separate the sealing head 311 from the flow through hole 111, thereby causing the flow through hole 111 to be open and forming the discharge of fire-fighting flow material 400; thus, it helps to avoid collisions, short circuits, and fires; thus improving the safety of use and ensuring the orderly and stable operation.

[0042] Specifically, in some implementations, such as Figure 2 and 3 As shown in Figure 5, the inner wall of the housing 100 is provided with a limiting groove (not shown in the figure); the outer surface of the battery pack component 200 is provided with a positioning member 244; the positioning member 244 is provided with a positioning groove 243; the outer surface of the first connecting block 321 is tightly engaged with the inner wall of the limiting groove; the outer surface of the second connecting block 322 is tightly engaged with the positioning groove 243. This structure, through the limiting groove and the positioning groove 243, ensures the assembly stability of the limiting member 320 and ensures the convenience of separation protection operation.

[0043] In some implementation methods, such as Figure 5 As shown, the positioning member 244 includes a first positioning protrusion 241 and a first positioning protrusion 242 arranged side by side; the first positioning protrusion 241 and the first positioning protrusion 242 are respectively connected to the outer surface of the battery pack component 200; and the positioning groove 243 is formed between the first positioning protrusion 241 and the first positioning protrusion 242. This structure, through the first positioning protrusion 241 and the first positioning protrusion 242, effectively reduces the weight of the battery pack component 200 and effectively ensures the assembly stability of the limiting member 320.

[0044] In some implementation methods, such as Figure 4 and 5As shown, the elastic folding block 323 includes a first elastic inclined segment 3232 and a second elastic inclined segment 3233 that are inclined and connected to each other as a single unit; a crease edge 3231 is disposed between the first elastic inclined segment 3232 and the second elastic inclined segment 3233; and the first elastic inclined segment 3232 is connected to the first connecting block 321; the second elastic inclined segment 3233 is connected to the second connecting block 322. Further, the first elastic inclined segment 3232 and the second elastic inclined segment 3233, as well as the second connecting block 322 and the first connecting block 321, are integrally cast; and the limiting member 320 is an elastic metal part. Further still, the inclination angle between the first elastic inclined segment 3232 and its horizontal plane is equal to the inclination angle between the second elastic inclined segment 3233 and its horizontal plane, and both are α; and α satisfies: 10°≤α≤30°. α can be 10°, 15°, 20°, 25°, 25.5°, 30°, etc.; preferably 15°. When the angle is too small, the impact stress will exceed the reasonable safety value before the limiting component 320 is deformed by compression, which can easily cause a short circuit and fire that requires a period of time to extinguish. When the angle is too large, the impact stress will be too small to cause the limiting component 320 to deform by compression, thus affecting its normal use.

[0045] Specifically, in some implementations, such as Figure 3 and 4 As shown, the elastic fold 323 is provided with at least one buffer channel 3234; the buffer channel 3234 extends through the thickness of the elastic fold 323 (the first elastic inclined section 3232 and the second elastic inclined section 3233); this structure achieves a heat dissipation flow channel during normal operation through the buffer channel 3234, thereby improving heat dissipation efficiency; it can also reduce the overall weight, which is conducive to promoting the speed of extrusion deformation; thus ensuring the separation speed.

[0046] Specifically, in some implementations, such as Figure 3 and 5 As shown, the battery pack component 200 includes a battery body 210, a support base plate 220, at least two limiting side plates 230, and two limiting side frames 240; the limiting side frames 240 are arranged side by side and abut against the two side surfaces of the battery body 210; the two sides of each limiting side plate 230 are respectively connected to two different limiting side frames 240; the support base plate 220 is connected to the bottom of the battery body 210; and the positioning member 244 is connected to the outer surface of the limiting side frame 240 away from the battery body 210.

[0047] This utility model also proposes an electrical device, such as Figure 6As shown, the battery pack device includes a carrying component 500 and a battery pack assembly, with the housing 100 connected to the interior of the carrying component 500. The specific structure of the battery pack assembly is as described in the above embodiments. Since this electrical device employs all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0048] The carrier component 500 can be a vehicle, ship, spacecraft, electric toy, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as electric car toys, electric ship toys, and electric airplane toys, etc. This application embodiment does not impose special limitations on the above-mentioned electrical equipment.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A battery pack apparatus, characterized by: The device includes a housing, a battery pack assembly, and a guide control assembly. The housing contains a partition, and a first storage cavity and a second storage cavity are located between the partition and the housing. The battery pack assembly is connected to the interior of the second storage cavity. The first storage cavity is used to store fire-fighting fluids. The partition has at least one flow through-hole. One end of the guide control assembly is detachably connected to the interior of the flow through-hole, and the other end of the guide control assembly is connected to the inner wall of the housing within the second storage cavity.

2. The battery pack apparatus of claim 1, wherein: The guiding control component includes a sealing mounting component and a limiting component; one end of the sealing mounting component is connected to the flow through hole; the other end of the sealing mounting component is connected to the limiting component; and the two ends of the limiting component respectively abut against the outer surface of the battery pack component and the inner sidewall of the housing.

3. The battery pack apparatus of claim 2, wherein: The sealing installation component includes a sealing head and a push rod; the sealing head is detachably connected to the inner wall of the flow through hole; one end of the push rod is connected to the sealing head; the other end of the push rod is connected to the limiting component.

4. The battery pack apparatus of claim 3, wherein: The sealing head includes a first sealing protrusion, a sealing connection portion, and a second sealing protrusion connected in sequence; the first sealing protrusion is disposed in the first storage cavity; the outer wall of the sealing connection portion is connected to the inner wall of the flow through hole; the second sealing protrusion is disposed in the second storage cavity and is connected to one end of the push rod.

5. The battery pack apparatus according to claim 2 or 3 or 4, characterized by: The limiting component includes a first connecting block, an elastic folding block, and a second connecting block arranged sequentially; the first connecting block abuts against the inner side wall of the housing; the second connecting block abuts against the outer surface of the battery pack component; the elastic folding block has a crease edge; one end of the sealing mounting component is connected to the crease edge.

6. The battery pack apparatus of claim 5, wherein: The inner wall of the housing is provided with a limiting groove; the outer surface of the battery pack component is provided with a positioning element; the positioning element is provided with a positioning groove; the first connecting block is engaged with the inner wall of the limiting groove; the second connecting block is engaged with the inner wall of the positioning groove.

7. The battery pack apparatus of claim 6, wherein: The positioning component includes a first positioning protrusion and a second positioning protrusion arranged side by side; the first positioning protrusion and the second positioning protrusion are respectively connected to the outer surface of the battery pack component; and the positioning groove is formed between the first positioning protrusion and the second positioning protrusion.

8. The battery pack apparatus of claim 5, wherein: The elastic folding block includes a first elastic inclined segment and a second elastic inclined segment that are inclined to each other; the crease edge is disposed between the first elastic inclined segment and the second elastic inclined segment; and the first elastic inclined segment is connected to the first connecting block; the second elastic inclined segment is connected to the second connecting block; And / or, the elastic fold is provided with at least one buffer channel; the buffer channel extends through the thickness of the elastic fold.

9. The battery pack apparatus of claim 8, wherein: The angle of inclination between the first elastic inclined segment and its horizontal plane is equal to the angle of inclination between the second elastic inclined segment and its horizontal plane, and both are α; Furthermore, α satisfies: 10°≤α≤30°.

10. An electrical device, characterized by: The battery pack device includes any one of claims 1 to 9.

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