Battery pack and electric device

Abstract

The utility model provides a battery pack and an electric device, relates to the technical field of batteries, and aims to solve the problems of poor insulating property and impact resistance of a battery cover body in the prior art. The battery pack comprises a bottom plate; the battery module is arranged on the bottom plate, the battery module comprises a pole and / or an anti-explosion valve, and the pole and / or the anti-explosion valve are / is located on the side, away from the bottom plate, of the battery module; the cover plate assembly comprises an insulating top plate and a metal surrounding plate, the insulating top plate is arranged on the side, away from the battery module, of the pole and / or the anti-explosion valve, the metal surrounding plate is arranged between the bottom plate and the insulating top plate, and the battery module is arranged on the inner side of the metal surrounding plate. According to the utility model, the insulating top plate close to the pole and / or the explosion-proof valve adopts the non-metal insulating plate, so that the problem of electric shock caused by electrolyte leakage can be avoided, in addition, the metal coaming which is easy to impact and bump is a metal plate, the strength of the battery pack can be improved, and the battery pack is prevented from being damaged in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular, to a battery pack and an electrical device. Background Art

[0002] At present, the outer shell of a battery pack usually adopts a metal material or a plastic material. The metal material has electrical conductivity. In extreme cases, when the battery cell is thermally out of control, the electrolyte splashes through the explosion-proof valve, generating abnormal electric arcs. The metal outer shell is easily charged, resulting in electric shock. However, the plastic material has insulation and flame retardancy, but its price is expensive. On the other hand, its impact resistance is poor. Summary of the Utility Model

[0003] The utility model aims to solve the technical problems of poor insulation performance and poor impact resistance of the battery cover in the prior art or related technologies.

[0004] The first aspect of the utility model provides a battery pack.

[0005] The second aspect of the utility model provides an electrical device.

[0006] The battery pack provided by the embodiment of the first aspect of the utility model includes: a bottom plate; a battery module disposed on the bottom plate, the battery module including a pole column and / or an explosion-proof valve, the pole column and / or the explosion-proof valve being located on the side of the battery module away from the bottom plate; a cover plate assembly including an insulating top plate and a metal enclosing plate, the insulating top plate being disposed on the side of the pole column and / or the explosion-proof valve away from the battery module, the metal enclosing plate being disposed between the bottom plate and the insulating top plate, and the battery module being disposed inside the metal enclosing plate.

[0007] The battery pack provided by this embodiment includes a bottom plate, a battery module and a cover plate assembly. The battery module is disposed on the bottom plate. The battery module includes a pole column and / or an explosion-proof valve, and the pole column and / or the explosion-proof valve are located on the upper side of the battery module. The cover plate assembly includes an insulating top plate and a metal enclosing plate. The insulating top plate is disposed on the upper side of the pole column and / or the explosion-proof valve. The metal enclosing plate is disposed between the bottom plate and the insulating top plate. The metal enclosing plate, the bottom plate and the insulating top plate enclose a containing space, and the battery module is disposed inside the containing space. In the utility model, the insulating top plate close to the pole column and / or the explosion-proof valve adopts a non-metallic insulating plate, which can avoid the problem of electric shock caused by electrolyte leakage. In addition, the metal enclosing plate, which is prone to impact and collision, is made of a metal plate, which can also improve the strength of the battery pack and avoid damage during transportation.

[0008] In some embodiments, optionally, the metal enclosing plate includes: a base plate; a flanging connected to the base plate, the flanging being bent toward the insulating top plate, and a card slot is provided on the insulating top plate, and the flanging can be engaged into the card slot.

[0009] In this embodiment, the metal shroud includes a base plate and a flange. The flange is connected to the base plate and bends towards one side of the insulating top plate. A clamping groove is provided on the insulating top plate, and the flange can be clamped into the clamping groove. This design provides good connection performance between the metal shroud and the insulating top plate, and the flange will not fall off from the clamping groove.

[0010] In some embodiments, optionally, a limiting hole is provided on the flange, and a limiting protrusion is provided on the insulating top plate at a position corresponding to the limiting hole. The limiting protrusion is located within the limiting hole to limit the flange within the clamping groove.

[0011] In this embodiment, the provision of the limiting protrusion and the limiting hole realizes the fixation of the insulating top plate and the flange, thereby improving the connection strength between the insulating top plate and the metal shroud and preventing the separation of the insulating top plate and the metal shroud.

[0012] In some embodiments, optionally, the insulating top plate and the limiting protrusion are of an integral structure.

[0013] In this embodiment, the insulating top plate and the limiting protrusion being of an integral structure can improve the connection strength between the two.

[0014] In some embodiments, optionally, the metal shroud is provided with a first mounting hole and a second mounting hole. The battery pack further includes: a battery management component disposed in the first mounting hole and connected to the battery module; and a panel component disposed in the second mounting hole and connected to the battery management component.

[0015] In this embodiment, the battery management component is used to collect cell information and communicate with other devices, and the panel component is used to install electrical components of the battery pack, such as connectors, MSDs, fuses, etc. In addition, the panel component is further provided with a control panel for controlling working parameters of the battery pack according to the information collected by the battery management component.

[0016] In some embodiments, optionally, the battery pack further includes: a first seal disposed between the battery management component and the metal shroud for sealing the gap between the battery management component and the metal shroud; and a second seal disposed between the panel component and the metal shroud for sealing the gap between the panel component and the metal shroud.

[0017] In this embodiment, the provision of the first seal can improve the sealing performance between the battery management component and the metal shroud, and the provision of the second seal can improve the sealing performance between the panel component and the metal shroud.

[0018] In some embodiments, optionally, the battery pack further includes a reinforcing rib disposed on the side of the insulating top plate away from the battery module.

[0019] In this embodiment, by providing a reinforcing rib above the insulating top plate, the strength of the insulating top plate can be improved, enabling the insulating top plate to have a certain compressive performance.

[0020] In some embodiments, optionally, along the extending direction of the reinforcing rib, the length of the reinforcing rib is the same as that of the insulating top plate, and the number of the reinforcing ribs is multiple, such as 5, and the multiple reinforcing ribs are arranged on the insulating top plate at intervals and evenly.

[0021] In some embodiments, optionally, there is a gap between the metal enclosing plate and the battery module.

[0022] In this embodiment, there is a gap between the metal enclosing plate and the battery module. In this way, when the metal enclosing plate collides with the outside and deforms, even if the metal enclosing plate deforms, it will not contact the battery module, thereby avoiding damage to the battery module and improving the overall safety performance of the battery pack.

[0023] In some embodiments, optionally, the gap between the metal enclosing plate and the battery module is greater than or equal to 5 mm and less than or equal to 15 mm.

[0024] In this embodiment, the gap between the metal enclosing plate and the battery module should not be too large, otherwise it will cause the overall volume of the battery pack to be large. Nor should the gap between the metal enclosing plate and the battery module be too small, otherwise it will easily damage the battery module. Therefore, it is most suitable to be set between 5 mm and 15 mm.

[0025] In some embodiments, optionally, the insulating top plate includes one or a combination of the following: plastic plate, rubber plate, plastic-rubber composite plate, and epoxy resin-glass fiber composite plate.

[0026] In this embodiment, the plastic plate, rubber plate, plastic-rubber composite plate, and epoxy resin-glass fiber composite plate have good insulation performance and excellent heat resistance. Even in the case of thermal runaway of the battery cell, they will not easily crack or melt through, resulting in the leakage of flammable and explosive gases caused by thermal runaway.

[0027] In some embodiments, optionally, the metal enclosing plate includes one or a combination of the following: aluminum alloy plate, steel plate, and magnesium alloy plate.

[0028] The second aspect embodiment of the present utility model provides an electrical device including: the battery pack of any one of the technical solutions in the first aspect of the present utility model. Since the electrical device of the present utility model includes the battery pack of any one of the technical solutions in the first aspect of the present utility model. Therefore, it has all the beneficial effects of the battery pack of any one of the technical solutions in the first aspect.

[0029] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0030] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 FIG. 4 shows one of the exploded views of the battery pack of the present utility model;

[0032] Figure 2 FIG. 8 shows the front view of the battery pack of the present utility model;

[0033] Figure 3 FIG. 12 shows one of the structural schematic diagrams of the battery pack of the present utility model;

[0034] Figure 4 FIG. 16 shows another exploded view of the battery pack of the present utility model;

[0035] Figure 5 FIG. 20 shows another structural schematic diagram of the battery pack of the present utility model;

[0036] Figure 6 FIG. 24 shows one of the structural schematic diagrams of the metal enclosure part of the battery pack of the present utility model;

[0037] Figure 7 FIG. 28 shows another structural schematic diagram of the metal enclosure part of the battery pack of the present utility model;

[0038] Figure 8 FIG. 32 shows the structural schematic diagram of the pole column and explosion-proof valve part of the battery pack of the present utility model;

[0039] Figure 9 FIG. 36 shows the structural schematic diagram of the electrical device of the present utility model.

[0040] Figures 1 to 9 The corresponding relationship between the reference numerals and the component names in the figures is as follows:

[0041] 1 battery pack, 11 bottom plate, 12 battery module, 122 pole column, 124 explosion-proof valve, 126 battery cell, 13 cover plate assembly, 132 insulating top plate, 134 metal enclosure, 1341 substrate, 1342 flanging, 1343 card slot, 1344 limiting hole, 1345 limiting protrusion, 1346 first mounting hole, 1347 second mounting hole, 14 battery management component, 15 panel component, 162 first seal, 164 second seal, 166 third seal, 17 reinforcing rib, 18 fastener, 19 rivet nut, 2 electrical device. Detailed Embodiments

[0042] To better understand the above aspects, features, and advantages of the embodiments according to the present utility model, the embodiments according to the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0043] In the following description, many specific details are set forth in order to fully understand the embodiments according to the present utility model. However, the embodiments according to the present utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the embodiments according to the present utility model is not limited by the specific embodiments disclosed below.

[0044] First of all, it should be understood that in the drawings of the present utility model, all the dashed lines at the edges are cutting lines.

[0045] As Figure 1 、 Figure 2 and Figure 8 shown, the battery pack 1 provided in the first aspect embodiment of the present utility model includes a bottom plate 11, a battery module 12, and a cover assembly 13; the battery module 12 is disposed on the bottom plate 11, the battery module 12 includes a pole column 122 and / or an explosion-proof valve 124, and the pole column 122 and / or the explosion-proof valve 124 are located on the side of the battery module 12 away from the bottom plate 11; the cover assembly 13 includes an insulating top plate 132 and a metal enclosing plate 134, the insulating top plate 132 is disposed on the side of the pole column 122 and / or the explosion-proof valve 124 away from the battery module 12, the metal enclosing plate 134 is disposed between the bottom plate 11 and the insulating top plate 132, and the battery module 12 is disposed inside the metal enclosing plate 134.

[0046] The battery pack 1 provided in this embodiment includes a bottom plate 11, a battery module 12, and a cover assembly 13. The battery module 12 is disposed on the bottom plate 11. The battery module 12 includes a pole column 122 and / or an explosion-proof valve 124, and the pole column 122 and / or the explosion-proof valve 124 are located on the upper side of the battery module 12; the cover assembly 13 includes an insulating top plate 132 and a metal enclosing plate 134, the insulating top plate 132 is disposed on the upper side of the pole column 122 and / or the explosion-proof valve 124, the metal enclosing plate 134 is disposed between the bottom plate 11 and the insulating top plate 132, the metal enclosing plate 134, the bottom plate 11, and the insulating top plate 132 enclose a receiving space, and the battery module 12 is disposed in the receiving space. In the present utility model, the insulating top plate 132 close to the pole column 122 and / or the explosion-proof valve 124 is made of a non-metallic insulating plate, which can avoid the problem of electric shock caused by electrolyte leakage. In addition, the metal enclosing plate 134 that is prone to impact and collision is selected as a metal plate, which can also improve the strength of the battery pack 1 and avoid damage during transportation.

[0047] In some embodiments, optionally, as Figure 6 and Figure 7As shown, the metal enclosing plate 134 includes a base plate 1341 and a flange 1342. The flange 1342 is connected to the base plate 1341 and bends towards the side of the insulating top plate 132. A clamping groove 1343 is provided on the insulating top plate 132, and the flange 1342 can be clamped into the clamping groove 1343.

[0048] In this embodiment, the metal enclosing plate 134 includes a base plate 1341 and a flange 1342. The flange 1342 is connected to the base plate 1341 and bends towards the side of the insulating top plate 132. A clamping groove 1343 is provided on the insulating top plate 132, and the flange 1342 can be clamped into the clamping groove 1343. With this design, the connection performance between the metal enclosing plate 134 and the insulating top plate 132 is good, and the flange 1342 will not fall off from the clamping groove 1343.

[0049] In some embodiments, optionally, a limiting hole 1344 is provided on the flange 1342, and a limiting protrusion 1345 is provided on the insulating top plate 132 at a position corresponding to the limiting hole 1344. The limiting protrusion 1345 is located within the limiting hole 1344 to limit the flange 1342 within the clamping groove 1343.

[0050] In this embodiment, the provision of the limiting protrusion 1345 and the limiting hole 1344 realizes the fixation of the insulating top plate 132 and the flange 1342, thereby improving the connection strength between the insulating top plate 132 and the metal enclosing plate 134 and preventing the separation of the insulating top plate 132 and the metal enclosing plate 134.

[0051] In some embodiments, optionally, the insulating top plate 132 and the limiting protrusion 1345 are of an integral structure.

[0052] In this embodiment, the insulating top plate 132 and the limiting protrusion 1345 are of an integral structure, which can thus improve the connection strength between the two.

[0053] In some embodiments, optionally, as Figure 3 and Figure 4 shown, the metal enclosing plate 134 is provided with a first mounting hole 1346 and a second mounting hole 1347. The battery pack 1 further includes a battery management component 14 and a panel component 15. The battery management component 14 is disposed in the first mounting hole 1346 and is connected to the battery module 12; the panel component 15 is disposed in the second mounting hole 1347 and is connected to the battery management component 14.

[0054] In this embodiment, the battery management component 14 is used to collect information of the battery cells 126 and communicate with other devices. The panel component 15 is used to install electrical components of the battery pack 1, such as connectors, MSDs, fuses, etc. In addition, the panel component 15 is also provided with a control panel for controlling working parameters of the battery pack 1 according to the information collected by the battery management component 14.

[0055] In some embodiments, optionally, as Figure 1 shown, the battery pack 1 further includes a first seal 162 and a second seal 164. The first seal 162 is disposed between the battery management component 14 and the metal shroud 134 to seal the gap between the battery management component 14 and the metal shroud 134. The second seal 164 is disposed between the panel assembly 15 and the metal shroud 134 to seal the gap between the panel assembly 15 and the metal shroud 134.

[0056] In this embodiment, by providing the first seal 162, the sealing performance between the battery management component 14 and the metal shroud 134 can be improved. By providing the second seal 164, the sealing performance between the panel assembly 15 and the metal shroud 134 can be improved.

[0057] In some embodiments, optionally, as Figure 5 shown, the battery pack 1 further includes a reinforcing rib 17 disposed on the side of the insulating top plate 132 away from the battery module 12.

[0058] In this embodiment, by providing the reinforcing rib 17 above the insulating top plate 132, the strength of the insulating top plate 132 can be improved, so that the insulating top plate 132 has a certain compressive performance.

[0059] In some embodiments, optionally, along the extending direction of the reinforcing rib 17, the length of the reinforcing rib 17 is the same as the length of the insulating top plate 132. The number of the reinforcing ribs 17 is multiple, for example, 5. The multiple reinforcing ribs 17 are spaced apart and evenly disposed on the insulating top plate 132.

[0060] In some embodiments, optionally, as Figure 2 shown, a gap is provided between the metal shroud 134 and the battery module 12.

[0061] In this embodiment, a gap is provided between the metal shroud 134 and the battery module 12. In this way, when the metal shroud 134 is impacted and deformed externally, even if the metal shroud 134 is deformed, it will not contact the battery module 12, thereby avoiding damage to the battery module 12 and improving the overall safety performance of the battery pack 1.

[0062] In some embodiments, optionally, the gap between the metal shroud 134 and the battery module 12 is greater than or equal to 5 mm and less than or equal to 15 mm, for example, 10 mm.

[0063] In this embodiment, the gap between the metal shroud 134 and the battery module 12 should not be too large, as this will result in a large overall volume of the battery pack 1. Nor should the gap between the metal shroud 134 and the battery module 12 be too small, as this will easily damage the battery module 12. Therefore, it is most appropriate to set it between 5 mm and 15 mm.

[0064] In some embodiments, optionally, the insulating top plate 132 includes one or a combination of the following: a plastic plate, a rubber plate, a plastic-rubber composite plate, and an epoxy resin-glass fiber composite plate.

[0065] In this embodiment, the plastic plate, the rubber plate, the plastic-rubber composite plate, and the epoxy resin-glass fiber composite plate have good insulation performance and excellent heat resistance. Even when the battery cell 126 undergoes thermal runaway, they will not easily crack or melt through, resulting in the leakage of flammable and explosive gases caused by thermal runaway.

[0066] In some embodiments, optionally, the metal enclosing plate 134 includes one or a combination of the following: an aluminum alloy plate, a steel plate, and a magnesium alloy plate.

[0067] A battery pack 1 provided by another embodiment of the present utility model. First of all, it should be understood that the structures of power battery packs and energy storage battery packs are generally such that the bottom plate 11 for carrying the battery cells 126 and the cover plate assembly 13 above the battery cells 126 are hermetically connected together to form a sealed cavity. The battery cells 126 and electrical components are arranged in the cavity to form the battery pack 1. Since the pole columns 122 and the explosion-proof valves 124 are usually stacked upward, the cover plate is usually made of plastic material. The purpose is to avoid the insulation problems introduced by using metal materials. Even in extreme cases, when the battery cell 126 undergoes thermal runaway, electrolyte sputtering may generate abnormal arcs, affecting system safety. However, cover plates made of plastic or non-metallic insulating materials usually have relatively high requirements for high temperature resistance and flame retardancy, resulting in high costs. On the other hand, the strength of plastic materials is limited. After the cover plate is connected and fixed to the bottom plate 11, the plastic may age or the design strength itself may be insufficient, often resulting in deformation, causing the compression amount of the sealing ring to be insufficient, and further resulting in poor airtightness. On the other hand, after the battery pack 1 is installed, there are usually exposed areas on the four side surfaces. During system integration, transportation, and later maintenance, impacts and knocks may occur on the housing. The housing of the battery pack 1 should be able to resist a certain amount of impact energy to avoid damage to the battery cells 126. Some regulatory standards have increased the requirements for impact and extrusion tests on the housing of the battery pack 1, and the current housings of the battery pack 1 cannot meet both the insulation and strength requirements at the same time.

[0068] The battery pack 1 of this embodiment includes a cover plate assembly 13, a bottom plate 11, a battery module 12, a BMU (Battery Management Unit) assembly, a panel assembly 15, a third seal 166, and fasteners 18. The cover plate assembly 13 is arranged on the top of the battery pack 1, the bottom plate 11 is arranged at the bottom of the battery pack 1, the battery module 12 is arranged on the bottom plate 11, the BMU assembly is used to collect information of the battery cells 126 and communicate with other devices, and the panel assembly 15 is used to install electrical components of the battery pack 1, such as connectors, MSDs, and fuses, etc.; the third seal 166 seals the bottom plate 11 and the cover plate assembly 13, and the fasteners 18 are used to tightly connect the bottom plate 11 and the cover plate assembly 13.

[0069] Specifically, in the installation process, after the battery module 12 is installed and fixed on the bottom plate 11 of the battery pack 1, the cover plate assembly 13 is installed. The cover plate assembly 13 consists of a metal enclosure 134, an insulating top plate 132, and blind rivet nuts 19. Among them, the metal enclosure 134 is provided with a first mounting hole 1346 and a second mounting hole 1347 corresponding to the positions of the BMU assembly and the panel assembly 15. The BMU assembly and the first seal 162 are installed in the first mounting hole 1346 through the blind rivet nuts 19, and the panel assembly 15 and the second seal 164 are installed in the second mounting hole 1347 through the blind rivet nuts 19. Fasteners 18 are used around the battery pack 1 to completely fix the cover plate assembly 13 and the third seal 166 on the bottom plate 11, completing the installation of the entire battery pack 1 housing.

[0070] In addition, there is a certain space distance between the metal enclosure 134 and the side of the battery module 12. When the side is subjected to mechanical shock and collision, the metal enclosure 134 can absorb most of the energy. Even if some deformation occurs, it will not affect the battery cells 126. The insulating top plate 132 is directly above the battery module 12, close to the pole column 122, the explosion-proof valve 124, and the sampling circuit of the battery cells 126, and has good insulation properties. A plastic material with better heat resistance or an epoxy resin plus fiberglass material is selected. Even in the case of thermal runaway of the battery cells 126, it will not easily crack or melt through, resulting in the leakage of flammable and explosive gases caused by thermal runaway, and can avoid affecting other devices in the system.

[0071] In addition, the insulating top plate 132 is designed with reinforcing ribs 17, which can improve the rigidity of the insulating top plate 132 and prevent the insulating top plate 132 from vibrating due to the transportation road conditions during transportation, resulting in excessive amplitude and hitting the battery module 12. In addition, the insulating top plate 132 is designed with a card slot 1343, and a limiting hole 1344 is designed on the flange 1342. The size of the limiting hole 1344 should be 1mm to 10mm, the hole spacing should be less than 50mm, and the hole spacing at the corner should be less than 20mm. The thickness of the insulating top plate 132 in the area where it is combined with the metal enclosure 134 should be greater than the sheet metal thickness of the metal enclosure 134, forming an upper and lower interlayer, and wrapping the flange 1342 in the middle part. In addition, the non-metallic insulating material can be heated and pressurized so that the non-metallic insulating material flows to the limiting hole 1344 to form a limiting protrusion 1345. The limiting protrusion 1345 cooperates with the limiting hole 1344 to achieve a fixed connection between the metal enclosure 134 and the insulating top plate 132. The insulating top plate 132 has a good ability to follow the deformation of the metal enclosure 134. In addition, the insulating top plate 132 and the metal enclosure 134 have good bonding force and sealing effect.

[0072] The utility model divides the battery pack 1 into regions, and selects corresponding materials for different regions. Specifically, metal materials are used in the sealed fixed connection area and the surrounding sides that are prone to impact and bumping, so as to improve the strength of the cover assembly 13. Without adding other structural parts such as pressure plates and pressure strips, the sealing ring can be stably and reliably compressed, and the surrounding metal materials have sufficient elongation at break, yield strength and tensile strength to effectively protect the core components and battery cells 126. The top surface is made of non-metallic insulating material, and even in extreme cases, it will not cause insulation safety risks when it contacts the live parts of the battery module 12. At the same time, the non-metallic insulating top plate 132 usually has relatively high high temperature resistance and flame retardancy requirements, which makes it expensive. By arranging metal enclosures 134 around it, the demand for the use of high temperature resistant or highly flame retardant non-metallic materials can be reduced, the cost of the product can be reduced, and the economy can be improved.

[0073] The key technical point of the utility model is that the cover assembly 13 of the battery pack 1 adopts a process combining metal and non-metallic insulating materials, with metal materials used in the sealed fixed connection area and the surrounding sides prone to impact and bumping, and non-metallic insulating materials used in the top of the battery module 12 near the pole 122, the explosion-proof valve 124 and the sampling circuit of the battery cell 126.

[0074] like Figure 9 As shown, the second embodiment of the utility model provides an electric device 2 including: a battery pack 1 of any technical solution of the first aspect of the utility model. Since the electric device 2 of the utility model includes the battery pack 1 of any technical solution of the first aspect of the utility model, it has all the beneficial effects of the battery pack 1 of any technical solution of the first aspect.

[0075] In an embodiment according to the present utility model, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments according to the present utility model can be understood according to specific circumstances.

[0076] In addition, although the operations are depicted in a particular order, this should be understood to require that the operations be performed in the particular order shown or in a sequential order, or that all of the illustrated operations be performed to achieve the desired result. In certain environments, multitasking and parallel processing may be advantageous. Similarly, although a number of specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present utility model. Certain features described in the context of separate embodiments may also be implemented in combination in a single implementation. Conversely, the various features described in the context of a single implementation may also be implemented separately or in any suitable sub-combination in multiple implementations.

[0077] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

[0078] The above are only preferred embodiments according to the embodiments of the present utility model and are not used to limit the embodiments according to the present utility model. For those skilled in the art, various changes and modifications can be made according to the embodiments of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments according to the present utility model shall be included within the protection scope of the embodiments according to the present utility model.

Claims

1. A battery pack, characterized in that: include: Base plate; A battery module is arranged on the bottom plate, the battery module comprises a pole and / or an explosion-proof valve, and the pole and / or the explosion-proof valve are located on a side of the battery module away from the bottom plate; The cover plate assembly includes an insulating top plate and a metal enclosure plate, wherein the insulating top plate is arranged on a side of the pole and / or the explosion-proof valve away from the battery module, the metal enclosure plate is arranged between the bottom plate and the insulating top plate, and the battery module is arranged on the inner side of the metal enclosure plate.

2. The battery pack according to claim 1, characterized in that: The metal enclosure comprises: substrate; The flange is connected to the base plate, the flange is bent toward one side of the insulating top plate, and a slot is provided on the insulating top plate, and the flange can be engaged in the slot.

3. The battery pack according to claim 2, characterized in that: A limiting hole is arranged on the flange, and a limiting protrusion is arranged on the insulating top plate at a position corresponding to the limiting hole. The limiting protrusion is located in the limiting hole to limit the flange in the slot.

4. The battery pack according to claim 1, characterized in that: The metal enclosure is provided with a first mounting hole and a second mounting hole, and the battery pack further comprises: A battery management component, disposed in the first mounting hole and connected to the battery module; A panel assembly is arranged in the second mounting hole and connected to the battery management assembly.

5. The battery pack according to claim 4, characterized in that: Also includes: A first sealing member, disposed between the battery management assembly and the metal enclosure, for sealing a gap between the battery management assembly and the metal enclosure; The second sealing member is disposed between the panel assembly and the metal enclosure and is used for sealing the gap between the panel assembly and the metal enclosure.

6. The battery pack according to claim 1, characterized in that: Also includes: The reinforcing rib is arranged on a side of the insulating top plate away from the battery module.

7. The battery pack according to claim 1, characterized in that: A gap is provided between the metal enclosure plate and the battery module.

8. The battery pack according to claim 7, characterized in that: The gap between the metal enclosure and the battery module is greater than or equal to 5 mm and less than or equal to 15 mm.

9. The battery pack according to any one of claims 1 to 8, characterized in that: The insulating top plate comprises one of the following or a combination thereof: a plastic plate, a rubber plate, a plastic-rubber composite plate and an epoxy resin-glass fiber composite plate; and / or The metal enclosure includes one of the following or a combination thereof: an aluminum alloy plate, a steel plate and a magnesium alloy plate.

10. An electrical device, characterized in that: include: A battery pack as claimed in any one of claims 1 to 9.

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