Battery pack shell, battery pack and electric equipment

Abstract

The utility model discloses a battery pack shell, a battery pack and electric equipment, and belongs to the technical field of battery packs. Comprising a bottom plate, a buffer piece and a protection plate which are sequentially arranged in the first direction, the face, away from the buffer piece, of the bottom plate is used for being connected with a battery cell, and a preset gap is formed between the bottom plate and the buffer piece in the first direction and used for preventing corrosive substances entering the battery pack from making direct contact with the bottom plate. When external corrosive substances enter the space between the bottom plate and the buffer part, in consideration of the placement direction of the battery pack, the bottom plate is located above the buffer part, the buffer part is located below the bottom plate, a preset gap is formed between the bottom plate and the buffer part in the first direction, and under the action of gravity, the corrosive substances fall on the buffer part; the arrangement of the preset gap can effectively isolate the direct contact between the corrosive substance and the bottom plate, prevent the corrosive substance from being in contact with the bottom plate, and have the beneficial effect of protecting the bottom plate from being corroded by the corrosive substance.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery pack shell, a battery pack and an electrical device. Background Art

[0002] With the development of new energy technologies, more and more electrical equipment uses battery packs as driving energy.

[0003] In the prior art, a battery pack includes a support frame and battery cells. The battery cells can be placed at the bottom of the support frame, and the bottom of the support frame has the function of supporting the battery cells.

[0004] However, during the long-term use of electrical equipment, external corrosive substances (such as corrosive liquids such as acidic rainwater) can easily penetrate into the bottom of the support frame, and the corrosive substances are in direct contact with the bottom of the support frame, causing the bottom of the support frame to be corroded, affecting the support function of the support frame for the battery cell. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a battery pack housing, a battery pack and an electrical device, which can solve the problem in the prior art that the bottom of the supporting frame of the battery pack housing is easily corroded.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a battery pack shell, comprising a bottom plate, a buffer member and a protective plate arranged in sequence along a first direction, wherein a side of the bottom plate facing away from the buffer member is used to connect to a battery cell, and the bottom plate and the buffer member have a preset gap along the first direction.

[0008] In an embodiment of the present application, the battery pack shell includes a bottom plate, a buffer and a protective plate, wherein a side of the bottom plate facing away from the buffer is connected to the battery cell in the battery pack. Specifically, the bottom plate can be directly connected to the battery cell or indirectly connected to the battery cell. Specifically, the side of the bottom plate facing away from the buffer can be connected to the battery cell by gluing, and the bottom plate is provided to support the battery cell. The buffer is provided to achieve a buffering effect. In actual applications, when the battery pack is subjected to a force, the buffer can provide a buffer for the battery cell to prevent the battery cell from being damaged and failing due to the force. The protective plate is provided on a side of the buffer facing away from the bottom plate, and the buffer is used to protect the bottom of the battery pack. Furthermore, the bottom plate and the buffer have a preset gap along the first direction, and the preset gap is provided to prevent corrosive substances entering the interior of the battery pack from directly contacting the bottom plate. Specifically, when external corrosive substances enter between the bottom plate and the buffer, considering the placement direction of the battery pack, the bottom plate is located above the buffer, the buffer is located below the bottom plate, and the bottom plate and the buffer also have a preset gap along the first direction. It can be understood that under the action of gravity, the corrosive substances will fall on the buffer, and the setting of the preset gap can effectively isolate the direct contact between the corrosive substances and the bottom plate, prevent the corrosive substances from contacting the bottom plate, and have the beneficial effect of protecting the bottom plate from contact corrosion by corrosive substances and improving the support strength and support life of the battery pack shell.

[0009] In a second aspect, a battery pack is also provided, comprising the battery pack housing as described above.

[0010] In the embodiment of the present application, the battery pack has a battery pack shell as described above. Since there is a preset gap between the bottom plate and the buffer in the battery pack shell, when external corrosive substances enter between the bottom plate and the buffer, the preset gap separates the corrosive substances and the bottom plate, so that the bottom plate will not be in direct contact with the corrosive substances, thereby protecting the bottom plate from corrosion by the corrosive substances. This has the beneficial effect of protecting the bottom plate from contact corrosion by the corrosive substances, improving the supporting strength and supporting life of the battery pack shell, and thereby improving the service life of the battery pack.

[0011] In a third aspect, an electrical device is also provided, comprising the battery pack housing as described above.

[0012] In the embodiment of the present application, the electrical equipment may be a vehicle. When the vehicle is in use, it will inevitably encounter a wading scene. External moisture and corrosive substances enter the battery pack and cause corrosion to the bottom plate of the battery pack. However, in a vehicle with a battery pack as described above, since the battery pack shell in the battery pack is provided with a preset gap between the bottom plate and the buffer, when external corrosive substances enter between the bottom plate and the buffer, the preset gap separates the corrosive substances and the bottom plate, so that the bottom plate will not be in direct contact with the corrosive substances, thereby protecting the bottom plate from corrosion by the corrosive substances, protecting the bottom plate from contact corrosion by the corrosive substances, increasing the service life of the battery pack, and improving the user experience of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the exploded structure of the battery pack housing in an embodiment of the present application;

[0014] Figure 2 is a schematic diagram of the top view of the battery pack housing in an embodiment of the present application;

[0015] Figure 3 is a schematic diagram of a partial cross-sectional structure of a battery pack housing in an embodiment of the present application;

[0016] Figure 4 In the embodiment of this application Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 5 is a schematic diagram of the structure of a buffer member in an embodiment of the present application;

[0018] Figure 6 It is a schematic diagram of the structure of the protective layer in the embodiment of the present application.

[0019] Description of reference numerals:

[0020] 1. Battery pack shell; 10. Bottom plate; 11. Main body; 12. Anti-corrosion layer; 13. Hydrophobic layer; 20. Buffer; 21. First discharge hole; 30. Protective plate; 31. Second discharge hole; 40. Frame; 50. Sealing member. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] The battery pack housing 1, the battery pack and the electrical equipment provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 6 An embodiment of the present application provides a battery pack shell 1, comprising a bottom plate 10, a buffer member 20 and a protective plate 30 arranged in sequence along a first direction, a side of the bottom plate 10 facing away from the buffer member 20 is used for connecting to the battery cell, and the bottom plate 10 and the buffer member 20 have a preset gap along the first direction.

[0025] In the embodiment of the present application, the battery pack shell 1 includes a bottom plate 10, a buffer 20 and a protective plate 30, wherein the side of the bottom plate 10 facing away from the buffer 20 is connected to the battery cell in the battery pack. Specifically, the bottom plate 10 can be directly connected to the battery cell or indirectly connected to the battery cell. Specifically, the side of the bottom plate 10 facing away from the buffer 20 can be connected to the battery cell by gluing. The bottom plate 10 is used to carry the battery cell. The buffer 20 is used to achieve a buffering effect. In actual applications, when the battery pack is subjected to a force, the buffer 20 can provide a buffer for the battery cell to prevent the battery cell from being damaged and failing due to the force. The protective plate 30 is provided on the side of the buffer 20 facing away from the bottom plate 10, and the buffer 20 is used to protect the bottom of the battery pack. Furthermore, the bottom plate 10 and the buffer 20 have a preset gap along the first direction, and the preset gap is provided to prevent the corrosive substances entering the battery pack from directly contacting the bottom plate 10. Specifically, when external corrosive substances enter between the base plate 10 and the buffer 20, considering the placement direction of the battery pack, the base plate 10 is located above the buffer 20, and the buffer 20 is located below the base plate 10, and the base plate 10 and the buffer 20 also have a preset gap along the first direction. It can be understood that under the action of gravity, the corrosive substances will fall on the buffer 20, and the setting of the preset gap can effectively isolate the direct contact between the corrosive substances and the base plate 10, prevent the corrosive substances from contacting the base plate 10, and have the beneficial effect of protecting the base plate 10 from contact corrosion by corrosive substances and improving the support strength and support life of the battery pack shell 1.

[0026] Furthermore, the preset gap size may be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0027] Furthermore, the corrosive substance may be a liquid, a solid, or a mixture of a liquid and a solid, which is not limited in this embodiment.

[0028] Furthermore, the bottom plate 10 can also add an anti-corrosion coating and a hydrophobic coating to enhance the corrosion resistance of the bottom plate and reduce the adhesion of liquid on the bottom surface. Specifically, the material of the anti-corrosion coating includes but is not limited to epoxy, polyurea and other material coatings. In practical applications, the anti-corrosion coating can be added to the bottom plate 10 by a spraying process or by processes such as electrophoresis. The hydrophobic coating can be added to the bottom plate by a wax spraying process. It should also be noted that the buffer 20 is a buffering energy-absorbing structure used to absorb the energy applied by external forces to the bottom plate 10 and the protective plate 30 to prevent the bottom plate 10 and the protective plate 30 from being deformed by force. The material of the buffer 20 can be foam, rubber, PU foam board, MPP foam board, etc., and this embodiment does not impose any restrictions on this. The buffer 20 can be appropriately compressed when it is subjected to force, and the buffer 20 can be connected to the protective plate 30 by gluing.

[0029] Optionally, in the embodiment of the present application, the buffer member 20 is provided with a plurality of first discharge holes 21 along the first direction.

[0030] In the embodiment of the present application, it can be understood that the projection of the buffer 20 along the first direction overlaps with the orthographic projection of part of the protective plate 30 along the first direction, that is, the area of ​​the orthographic projection of the buffer 20 along the first direction is smaller than the area of ​​the orthographic projection of the protective plate 30 along the first direction, that is, the protective plate 30 completely covers the buffer 20, which has the function of protecting the buffer 20 from contact with the external environment. Further, the buffer 20 is provided with a plurality of first discharge holes 21, and the first discharge holes 21 are provided to discharge the corrosive substances falling on the buffer 20 from the first discharge holes 21, which has the beneficial effect of preventing the corrosive substances placed in the preset gap from causing adverse effects on the bottom plate 10.

[0031] Furthermore, since the buffer member 20 is provided with the first discharge hole 21 , the provision of the protection plate 30 has the beneficial effect of preventing foreign matter from entering the preset gap through the first discharge hole 21 .

[0032] Furthermore, the shape of the first discharge hole 21 may be circular, square, or irregular, which is not limited in this embodiment.

[0033] Furthermore, the diameter of the first discharge hole 21 can be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0034] Furthermore, the plurality of first discharge holes 21 may be arranged in an array or randomly distributed, depending on actual conditions, and this embodiment does not impose any limitation on this.

[0035] Optionally, in the embodiment of the present application, the protective plate 30 is provided with a plurality of second discharge holes 31 .

[0036] In the embodiment of the present application, the second discharge hole 31 is provided to discharge the corrosive substances discharged from the buffer 20 from the protective plate 30 again, that is, to discharge the corrosive substances from the battery pack housing 1. Specifically, the corrosive substances in the preset gap are discharged from the first discharge hole 21 and fall on the protective plate 30, and then discharged from the protective plate 30 from the second discharge hole 31, which has the beneficial effect of preventing the corrosive substances from remaining in the battery pack housing 1 and causing adverse effects on the battery pack housing 1.

[0037] Furthermore, the shape of the second discharge hole 31 may be circular, square, or irregular, and this embodiment does not impose any limitation on this. In addition, the shape of the second discharge hole 31 may be the same as the shape of the first discharge hole 21, or may be different from the shape of the first discharge hole 21, and this embodiment does not impose any limitation on this.

[0038] Furthermore, the diameter of the second discharge hole 31 can be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0039] Furthermore, the plurality of second discharge holes 31 may be arranged in an array or randomly distributed, depending on actual conditions, and this embodiment does not impose any limitation on this.

[0040] Optionally, in the embodiment of the present application, the plurality of first discharge holes 21 and the plurality of second discharge holes 31 are staggered.

[0041] In the embodiment of the present application, a plurality of first discharge holes 21 are opened in the buffer 20, a plurality of second discharge holes 31 are set in the protective plate 30, and the buffer 20 and the protective plate 30 are stacked along the first direction. The plurality of first discharge holes 21 and the plurality of second discharge holes 31 are both used to discharge corrosive substances from the battery pack housing 1. However, the buffer 20 and the protective plate 30 are used to provide support and protection for the battery cells. In order to provide support and protection for the battery cells while achieving the discharge of corrosive substances, the plurality of first discharge holes 21 respectively set on the buffer 20 and the plurality of second discharge holes 31 respectively set on the protective plate 30 are staggered. While achieving the discharge of corrosive substances, the reduction in the protective performance of the battery cells caused by opening holes on the buffer 20 and the protective plate 30 can be reduced.

[0042] Specifically, when corrosive substances have entered the preset gap, the corrosive substances can be discharged from the first discharge hole 21, and the discharged corrosive substances fall onto the protective plate 30. Since the multiple first discharge holes 21 and the multiple second discharge holes 31 are staggered, the corrosive substances that fall onto the protective plate 30 will not be directly discharged from the second discharge holes 31, but will be discharged from the protective plate 30 from the second discharge holes 31 after moving on the protective plate 30 (liquid corrosive substances flow, and solid corrosive substances move), thereby being discharged from the battery pack shell 1.

[0043] Furthermore, the multiple first discharge holes 21 and the multiple second discharge holes 31 that are staggered ensure that the buffer 20 and the protective member do not have support missing at a certain position at the same time, and do not have a gap at a certain position at the same time, so that the cooperation between the buffer 20 and the protective member has a certain supporting strength, and reduces the probability of external corrosive substances entering the battery pack from the first discharge holes 21 and the second discharge holes 31.

[0044] Optionally, in an embodiment of the present application, the battery pack shell 1 also includes a frame 40, the bottom plate 10 and the frame 40 are fixedly connected to form a accommodating cavity for accommodating the battery cell, the protective plate 30 is arranged on a side of the bottom plate 10 away from the accommodating cavity and is fixedly connected to the frame 40; the buffer member 20 is connected to the protective plate 30.

[0045] In the embodiment of the present application, the frame 40 is used to limit and support the battery cell from the surrounding, and part of the frame 40 is used to connect the base plate 10. The base plate 10 and the frame 40 are fixedly connected to form a receiving cavity, and the receiving cavity is used to receive the battery cell. The protective plate 30 is provided on the side of the base plate 10 away from the receiving cavity and is fixedly connected to the frame 40. The protective plate 30 is provided to increase the supporting strength of the base plate 10 for the battery cell. The buffer 20 is connected to the protective plate 30. Specifically, the buffer 20 can be bonded to the protective plate 30 or hot-pressed to the protective plate 30. This embodiment does not impose any limitation on this. It can be understood that the preset gap is also provided in the receiving cavity, and the receiving cavity is relatively closed. Setting the preset gap in the receiving cavity has the beneficial effect of preventing external corrosive substances from entering.

[0046] Furthermore, the frame 40 and the protective plate 30 may be connected by bolts or rivets, and this embodiment does not impose any limitation on this.

[0047] Furthermore, the bottom plate 10 is fixedly connected to a portion of the frame 40 . The bottom plate 10 can be fixedly connected to the frame 40 by welding, or by bolting, and this embodiment does not impose any limitation on this.

[0048] Optionally, in an embodiment of the present application, the battery pack shell 1 further includes a seal 50, which is clamped between the frame 40 and the protective plate 30 along a first direction, and the seal 50 is arranged around the protective plate 30; wherein the seal 50 can be deformed.

[0049] In the embodiment of the present application, the seal 50 is provided to further improve the sealing of the accommodation space and prevent external corrosive substances from entering the accommodation space. Specifically, the seal 50 is sandwiched between the frame 40 and the protective plate 30 along the first direction, and the seal 50 is arranged around the periphery of the protective plate 30. There is a certain gap between the protective plate 30 and the frame 40 after being connected by bolts or rivets. Liquid corrosive substances can enter the accommodation space through the gap, and the seal 50 is arranged around the periphery of the protective plate 30, which can effectively block the gap and has the beneficial effect of preventing liquid corrosive substances from entering.

[0050] Furthermore, the deformable seal 50 will be squeezed and deformed when it is arranged between the frame 40 and the protective plate 30. The squeezed seal 50 exerts a force on the frame 40 and the protective plate 30, which has the beneficial effect of improving the sealing strength.

[0051] Optionally, in an embodiment of the present application, the accommodating cavity includes two accommodating sub-cavities, the protective plate 30 includes two sub-plates, and the accommodating sub-cavities and the sub-plates are arranged in a one-to-one correspondence; wherein the seal 50 is clamped between the frame 40 and the two sub-plates along the first direction, and the seal 50 is arranged around the two sub-plates.

[0052] In an embodiment of the present application, the accommodating cavity may include two accommodating sub-cavities, and correspondingly, the protective plate 20 may include two sub-plates. It can be understood that the accommodating sub-cavities and the sub-plates are arranged in a one-to-one correspondence. Each sub-plate is used to carry the battery cell in the corresponding accommodating sub-cavity. Specifically, the seal 50 is clamped between the frame 40 and the two sub-plates along the first direction, and the seal 50 is arranged around the two sub-plates. There is a certain gap between the two sub-plates and the frame 40 after being connected by bolts or rivets. Liquid corrosive substances can enter the accommodating space through the gap, and the seal 50 is arranged around the two sub-plates, which can effectively block the gap and has the beneficial effect of preventing liquid corrosive substances from entering.

[0053] Optionally, in an embodiment of the present application, the base plate 10 includes a main body 11 and an anti-corrosion layer 12, the anti-corrosion layer 12 is arranged on a side of the main body 11 facing the preset gap, and the anti-corrosion layer 12 and the main body 11 are fixedly connected; wherein, the orthographic projection of the anti-corrosion layer 12 along the first direction covers the orthographic projection of the main body 11 along the first direction.

[0054] In the embodiment of the present application, the bottom plate 10 includes a body 11 and an anti-corrosion layer 12. The body 11 is provided to provide support for the battery cell. The anti-corrosion layer 12 is provided on the side of the body 11 facing the preset gap. The anti-corrosion layer 12 and the body 11 are fixedly connected. The anti-corrosion layer 12 is provided to provide anti-corrosion protection for the body 11, which has the beneficial effect of preventing corrosive substances from corroding the body 11 and affecting the supporting strength of the body 11.

[0055] Among them, the orthographic projection of the anti-corrosion layer 12 along the first direction covers the orthographic projection of the main body 11 along the first direction, that is, the surface of the main body 11 facing the preset gap is completely covered by the anti-corrosion layer 12, which has the beneficial effect of protecting the entire surface of the main body 11 and increasing the service life of the base plate 10.

[0056] Furthermore, the thickness and material of the main body 11, and the thickness and material of the anti-corrosion layer 12 can be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0057] Optionally, in an embodiment of the present application, the base plate 10 also includes a hydrophobic layer 13, which is arranged on the side of the anti-corrosion layer 12 facing the preset gap, and the hydrophobic layer 13 and the anti-corrosion layer 12 are fixedly connected; wherein, the orthographic projection of the hydrophobic layer 13 along the first direction covers the orthographic projection of the anti-corrosion layer 12 along the first direction.

[0058] In the embodiment of the present application, the hydrophobic layer 13 is provided to prevent liquid corrosive substances from adhering to the bottom plate 10 and causing a downward view of the bottom plate 10. Specifically, the hydrophobic layer 13 is provided on the side of the anti-corrosion layer 12 facing the preset gap, and the hydrophobic layer 13 and the anti-corrosion layer 12 are fixedly connected. In actual application, when liquid corrosive substances remain in the preset gap, the liquid corrosive substances will inevitably splash upward onto the bottom plate 10. By providing the hydrophobic layer 13 on the side of the anti-corrosion layer 12 facing the preset gap, the liquid absorption on the surface of the anti-corrosion layer 12 can be reduced, which has the beneficial effect of protecting the anti-corrosion layer 12, thereby protecting the bottom plate 10, and improving the service life of the bottom plate 10.

[0059] Among them, the orthographic projection of the hydrophobic layer 13 along the first direction covers the orthographic projection of the anti-corrosion layer 12 along the first direction, that is, the surface of the anti-corrosion layer 12 is completely covered by the hydrophobic layer 13, which has the beneficial effect of protecting the entire surface of the anti-corrosion layer 12 and improving the service life of the base plate 10.

[0060] Furthermore, the thickness and material of the hydrophobic layer 13 can be determined according to actual conditions, and this embodiment does not impose any limitation on this.

[0061] Optionally, in an embodiment of the present application, a battery pack is also provided, comprising the battery pack housing 1 as described above.

[0062] In the embodiment of the present application, a battery pack having a battery pack shell 1 as described above has a preset gap between the bottom plate 10 and the buffer member 20 in the battery pack shell 1. When external corrosive substances enter between the bottom plate 10 and the buffer member 20, the preset gap separates the corrosive substances and the bottom plate 10, so that the bottom plate 10 does not come into direct contact with the corrosive substances, thereby protecting the bottom plate 10 from corrosion by the corrosive substances. This has the beneficial effect of protecting the bottom plate 10 from contact corrosion by the corrosive substances, improving the supporting strength and supporting life of the battery pack shell 1, and thereby improving the service life of the battery pack.

[0063] Optionally, in an embodiment of the present application, the preset gap is H, where H≥0.5mm.

[0064] In the embodiment of the present application, the preset gap needs to be larger than the diameter of the droplets in actual applications. Specifically, it can be adjusted according to the size of the droplets actually generated in different working conditions.

[0065] Specifically, the preset gap is greater than or equal to 0.5 mm and less than or equal to 5 mm, depending on the specific situation.

[0066] Optionally, in an embodiment of the present application, an electrical device is also provided, comprising the battery pack housing 1 as described above.

[0067] In the embodiment of the present application, the electrical equipment may be a vehicle. When the vehicle is in use, it will inevitably encounter a wading scene, and the moisture and corrosive substances from the outside will enter the battery pack and cause corrosion to the bottom plate 10 in the battery pack. However, in the vehicle with the battery pack as described above, since the battery pack shell in the battery pack is provided with a preset gap between the bottom plate 10 and the buffer 20, when the external corrosive substances enter between the bottom plate 10 and the buffer 20, the preset gap separates the corrosive substances and the bottom plate 10, so that the bottom plate 10 will not be in direct contact with the corrosive substances, thereby protecting the bottom plate 10 from corrosion by the corrosive substances, protecting the bottom plate 10 from contact corrosion by the corrosive substances, improving the service life of the battery pack, and improving the user experience of the vehicle.

[0068] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A battery pack housing (1), characterized in that: The invention comprises a bottom plate (10), a buffer member (20) and a protective plate (30) which are arranged in sequence along a first direction; a side of the bottom plate (10) which faces away from the buffer member (20) is used for connecting to a battery cell; and a preset gap is provided between the bottom plate (10) and the buffer member (20) along the first direction.

2. The battery pack housing (1) according to claim 1, characterized in that: The buffer member (20) is provided with a plurality of first discharge holes (21).

3. The battery pack housing (1) according to claim 2, characterized in that: The protection plate (30) is provided with a plurality of second discharge holes (31).

4. The battery pack housing (1) according to claim 3, characterized in that: The plurality of first discharge holes (21) and the plurality of second discharge holes (31) are all arranged in a staggered manner.

5. The battery pack housing (1) according to any one of claims 1 to 4, characterized in that: The battery pack shell (1) further comprises a frame (40); the bottom plate (10) and the frame (40) are fixedly connected to form a receiving cavity for receiving the battery cell; the protective plate (30) is arranged on a side of the bottom plate (10) away from the receiving cavity and is fixedly connected to the frame (40); and the buffer (20) is connected to the protective plate (30).

6. The battery pack housing (1) according to claim 5, characterized in that: The battery pack shell (1) further comprises a sealing member (50), wherein the sealing member (50) is sandwiched between the frame (40) and the protective plate (30) along the first direction, and the sealing member (50) is arranged around the periphery of the protective plate (30).

7. The battery pack housing (1) according to claim 6, characterized in that: The accommodating cavity comprises two accommodating sub-cavities, the protective plate (30) comprises two sub-plates, and the accommodating sub-cavities and the sub-plates are arranged in a one-to-one correspondence; The sealing member (50) is sandwiched between the frame (40) and the two sub-boards along the first direction, and the sealing member (50) is arranged around the two sub-boards.

8. The battery pack housing (1) according to any one of claims 1 to 4, characterized in that: The bottom plate (10) comprises a main body (11) and an anti-corrosion layer (12), wherein the anti-corrosion layer (12) is arranged on a side of the main body (11) facing the protective plate (30).

9. The battery pack housing (1) according to claim 8, characterized in that: The bottom plate (10) further comprises a hydrophobic layer (13), wherein the hydrophobic layer (13) is arranged on a side of the anti-corrosion layer (12) facing the protective plate (30).

10. The battery pack housing (1) according to claim 1, characterized in that: The preset gap is H, where H≥0.5mm.

11. A battery pack, characterized in that: It comprises a battery pack casing (1) as claimed in any one of claims 1 to 10.

12. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 11.

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