Deformation decomposition support and battery pack

Abstract

The invention discloses a deformation decomposition support and a battery pack, and relates to the technical field of battery packs, the deformation decomposition support comprises a support body and a plurality of bottom plates distributed on the support body at intervals, and the periphery of each bottom plate is provided with an end wall extending upwards, so that the structural strength of the end wall is higher than that of the bottom plate. The bottom plate of the frame body is arranged to be of a low-strength structure, and the end wall surrounding the bottom plate is arranged to be of a high-strength structure, so that when a certain part of the end wall is collided and deformed, the end wall can be collapsed in a bottom plate area surrounded by the collided end wall to decompose deformation of the end wall part, and the deformation amount of the deformed end wall part is not prone to extruding other adjacent bottom plate areas. Therefore, after the electric connecting sheets covering the bottom plates are connected with the single batteries in series, even if the electric connecting sheets on one bottom plate deform due to the deformation of the bottom plate, the short circuit problem is avoided, so that the fire and explosion problems caused by the short circuit of the single batteries can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and in particular to a deformable and decomposable bracket and a battery pack. Background Art

[0002] A battery pack is a group of batteries consisting of several single cells, a bracket, a casing, etc. Several single cells are embedded in the bracket, and the casing and the bracket protect the single cells from the impact of collision.

[0003] In the prior art, the support structure is generally designed to protect the single battery from collision. For example, CN104701475B discloses an anti-collision power battery module device, in which the support is set to a structure that can be loosened when impacted, releasing the fixed single battery to avoid the single battery being squeezed when impacted, causing fire and explosion problems. Another example is the battery rack with improved collision performance disclosed in CN108417745B, in which reinforcing ribs, horizontal support rods, and vertical support rods are set in the basin-shaped member of the support to enhance its strength and rigidity, so as to obtain better protection in the event of a collision and avoid damage caused by deformation.

[0004] Based on the design concept of the above-mentioned existing brackets, the bracket design focuses on how to avoid deformation of the bracket, thereby compressing the single battery and causing the single battery to catch fire and explode. Summary of the invention

[0005] One of the purposes of the present invention is to provide a deformable and decomposable bracket to solve the problem that the bracket in the prior art cannot improve the fire and explosion of single cells if the anti-deformation capability is not enhanced.

[0006] The second purpose of the present invention is to provide another deformable and decomposable bracket to solve the problem that the bracket in the prior art cannot improve the fire and explosion of the single battery if the anti-deformation ability is not enhanced.

[0007] A third object of the present invention is to provide a battery pack.

[0008] To achieve one of the above purposes, the present invention adopts the following technical solution: a deformable decomposition bracket, including a frame body, on which a plurality of spaced-apart bottom plates are provided, and the bottom plates are all distributed on the same end surface of the frame body.

[0009] Each of the bottom plates is surrounded by an end wall extending upward, and the end walls are connected end to end to form a fence surrounding the bottom plate, and adjacent fences are connected together so that the top surface of the end wall forms the back surface of the frame.

[0010] The bottom plate surrounded by the end wall is formed as a recessed structure in the end wall, so that the structural strength of the end wall is stronger than that of the bottom plate.

[0011] When the collision energy impacts the side of the frame, the end wall adjacent to the side is deformed due to force, causing the deformation of the end wall to invade the bottom plate area surrounded by the end wall. The bottom plate with low structural strength will be compressed and deformed, causing the deformed end wall to collapse in the bottom plate area surrounded by it, and the possibility of deformation is small compared to other undeformed end walls with strong bottom plate structural strength.

[0012] It should be noted that, currently, the bottom plate of the frame inside the battery pack is basically the electrical connection position area of ​​the single battery, so that a plurality of single batteries can be connected in series according to the electrical connection position area.

[0013] Specifically, in the field of circuits, even if one of the power supplies (single battery) connected in series fails, it will only affect the use of the load, and will not damage other power supplies, let alone threaten the safety of the power supply. For parallel power supplies, if one of the parallel power supplies has an internal short circuit, the other parallel power supplies may be damaged or even dangerous. The conditions for the normal use of electrical appliances are mainly determined by voltage parameters, so the power supplies, that is, battery packs, are connected in series, not in parallel. As for the series and parallel connection of circuits, it depends on the needs. For example, civil 220V AC and industrial 380V AC are both used in parallel.

[0014] The improvement of the present invention is that the bottom plate of the frame, that is, the electrical connection position area of ​​the single battery, is set as a weak strength structure, and the end wall surrounding the bottom plate, that is, the enclosure, is set as a high-strength support structure.

[0015] The beneficial effects of the present invention are: The present invention sets the bottom plate of the frame body to a weak strength structure, and sets the end wall surrounding the bottom plate to a high strength structure, so that when a certain part of the end wall is collided and deformed, it can collapse in the bottom plate area surrounded by the collided end wall, so as to decompose the deformation of the end wall part, so that the deformation of the deformed end wall part is not easy to be squeezed to other adjacent bottom plate areas. Therefore, when the electrical contact piece covering the bottom plate is connected to the single battery in series, even if the electrical contact piece on it is deformed due to the deformation of a certain bottom plate, there will be no short circuit problem, so the fire and explosion problem of the single battery caused by short circuit can be improved.

[0016] The present invention is different from the prior art in that it is based on enhancing the anti-deformation performance of the bracket, thereby improving the problem of single battery catching fire and exploding.

[0017] Furthermore, in an embodiment of the present invention, the end walls of each of the bottom plates are connected together, so that the end walls constitute the back side of the frame.

[0018] Further, in an embodiment of the present invention, the connected end walls are integrally formed or formed as an integrated structure.

[0019] Furthermore, in an embodiment of the present invention, a mounting tube is provided on the front side of the frame, and the mounting tube has a mounting opening that passes through the upper and lower ends of the mounting tube, and a through opening is formed on the bottom plate, the diameter of the through opening is smaller than the mounting opening, and the through opening is communicated with the mounting opening.

[0020] Furthermore, in an embodiment of the present invention, the installation opening is a hole-shaped structure that is wide at the top and narrow at the bottom.

[0021] Furthermore, in an embodiment of the present invention, the width and depth of the installation opening is greater than the narrowness and depth of the installation opening.

[0022] Furthermore, in an embodiment of the present invention, the material used to make the bottom plate is a material that can undergo elastic or plastic deformation.

[0023] Furthermore, in an embodiment of the present invention, the bottom plate and the end wall are connected to the frame as an integral structure, or are injection-molded as an integral structure.

[0024] To achieve the second of the above purposes, the present invention adopts the following technical solution: a deformable decomposition bracket, including a frame body, a plurality of spaced-apart bottom plates are provided on the back of the frame body, the bottom plates are all distributed on the same end surface of the frame body, and the bottom plates are the electrical connection position area of ​​the single cell.

[0025] A convex portion suspended from the side surface of the frame body is provided, and the convex portion corresponds to the bottom plate.

[0026] A notch structure is provided in the area between the protruding portion and the base plate.

[0027] Further, in an embodiment of the present invention, the notch structure is a hole structure penetrating the front and back sides of the frame, or the notch structure is a recessed structure on the back side of the frame or on the front side of the frame.

[0028] The beneficial effects of the present invention are: The present invention sets a recessed structure between the protrusion and the bottom plate, and the collision energy is concentrated on the protrusion through the action of the protrusion suspended from the side of the frame body, and the protrusion is used as the "explosion point" of the collision energy. When the protrusion is deformed by force, the deformation of the protrusion invades the notch structure. At this time, the deformation of the protrusion is accommodated by the notch structure, so that the protrusion can be collapsed in the notch structure, which is beneficial to decomposing the collision impact force, reducing the collision impact force transmitted to the bottom plate, and not easily interfering with the electrical connection position area, which is beneficial to improving the occurrence of single battery fire and explosion.

[0029] The present invention is different from the prior art in that it is based on enhancing the anti-deformation performance of the bracket, thereby improving the problem of single battery catching fire and exploding.

[0030] In order to achieve the third of the above-mentioned objectives, the present invention adopts the following technical solution: a battery pack, wherein the battery pack has the deformable and decomposable bracket described in one of the above-mentioned objectives of the invention.

[0031] The battery pack also has a shell and a single battery, the single battery is embedded in the frame installation opening of the deformable decomposition bracket, and the bottom plate of the frame is covered with an electrical connector that connects the single battery in series. Finally, the frame and the single battery are placed in the shell for sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic back view of a deformed and decomposed bracket according to an embodiment of the present invention.

[0033] Figure 2 It is a back perspective schematic diagram of a deformed and decomposed bracket according to an embodiment of the present invention.

[0034] Figure 3 It is a front perspective schematic diagram of a deformed and decomposed bracket according to an embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of the cross-section structure of the deformed and decomposed bracket according to an embodiment of the present invention.

[0036] Figure 5 Schematic diagram of the structure of a battery pack according to an embodiment of the present invention.

[0037] 10. frame, 11. bottom plate, 12. end wall, 13. side surface, 14. raised portion, 15. notch structure; 20. mounting tube, 21. mounting port; 30. Electrical connector; 40. Single cell battery. DETAILED DESCRIPTION

[0038] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious. For those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known deformation decomposition structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other. Example 1

[0042] It should be noted that the drawings in the specification are the contents of the specification. The structural shapes, connection relationships, matching relationships, and positional relationships that can be obtained without any doubt in the drawings in the specification should be understood as the contents of the specification.

[0043] A deformable decomposition bracket, such as Figure 1 , Figure 2 As shown, the frame 10 includes a frame body 10, on which a plurality of spaced bottom plates 11 are arranged, the bottom plates 11 are all arranged on the same end surface of the frame body 10, and each bottom plate 11 is surrounded by an end wall 12 extending upward, the end walls 12 are connected end to end to form a fence surrounding the bottom plate 11, and adjacent fences are connected together, so that the end wall 12 forms the back side of the frame body 10. The back side is the end surface of the frame body 10 on which the bottom plates 11 are distributed.

[0044] The bottom plate 11 surrounded by the end wall 12 is formed as a recessed structure in the end wall 12 . In simple terms, the bottom plate 11 is recessed relative to the enclosure so that the structural strength of the end wall 12 is stronger than that of the bottom plate 11 .

[0045] It should be noted that there are many factors that affect the structural strength, and the present invention has a relatively obvious tendency to obtain a higher structural strength than the bottom plate 11 by stacking the thickness of the end wall 12 material. However, it is also possible to obtain a higher structural strength than the bottom plate 11 by optimizing the material of the end wall 12 (for example, using a better process to reduce defects inside the material), or to use a material with a higher strength than the bottom plate 11 to obtain a higher structural strength than the bottom plate 11. The present invention does not limit how the structural strength of the end wall 12 is stronger than the structural strength of the bottom plate 11.

[0046] When the collision energy impacts the side surface 13 of the frame 10, the end wall 12 adjacent to the side surface 13 is deformed by force, causing the deformation of the end wall 12 to invade the area of ​​the bottom plate 11 surrounded by the end wall 12. The bottom plate 11 with low structural strength will be compressed and deformed, causing the deformed end wall 12 to collapse in the area of ​​the bottom plate 11 surrounded by it, and the possibility of deformation is small compared to other undeformed end walls 12 with strong structural strength of the bottom plate 11.

[0047] It should be noted that, currently, the bottom plate 11 of the frame inside the battery pack is basically the electrical connection position area of ​​the single battery 40, so that a plurality of single batteries 40 can be connected in series according to the electrical connection position area.

[0048] Specifically, in the field of circuits, even if one of the power supplies (single battery 40) connected in series fails, it will only affect the use of the load, and will not damage other power supplies, let alone threaten the safety of the power supplies. For parallel power supplies, if one of the parallel power supplies has an internal short circuit, the other parallel power supplies may be damaged or even dangerous. The conditions for normal use of electrical appliances are mainly determined by voltage parameters, so power supplies, that is, battery packs, are connected in series, not in parallel. As for circuit series and parallel connection, it depends on the needs. For example, civil 220V AC and industrial 380V AC are both used in parallel.

[0049] The improvement of the present invention is that the bottom plate 11 of the frame 10, that is, the electrical connection position area of ​​the single battery 40 is set to a weak strength structure, and the end wall 12 surrounding the bottom plate 11, that is, the enclosure is set to a high-strength support structure.

[0050] The advantage of the present invention is that the bottom plate 11 of the frame 10 is set as a weak strength structure, and the end wall 12 surrounding the bottom plate 11 is set as a high strength structure, so that when a certain part of the end wall 12 is collided and deformed, it can collapse in the area of ​​the bottom plate 11 surrounded by the collided end wall 12, so as to decompose the deformation of the end wall 12 part, so that the deformation of the deformed end wall 12 part is not easy to be squeezed to other adjacent areas of the bottom plate 11. Therefore, when the electric contact 30 covering the bottom plate 11 is connected to the single battery 40 in series, even if the electric contact 30 on it is deformed due to the deformation of a certain bottom plate 11, there will be no short circuit problem, so the fire and explosion problem of the single battery 40 caused by the short circuit can be improved.

[0051] The present invention is different from the prior art in that it is based on enhancing the anti-deformation performance of the bracket, thereby improving the problem of the single battery 40 catching fire and exploding.

[0052] The idea of ​​the present invention to improve the fire and explosion of the single battery 40 is to prevent the electrical connection area of ​​the single battery 40 from being affected after the frame 10 is deformed. The prior art does not consider this aspect.

[0053] It should be noted that one of the reasons why the battery catches fire and explodes due to the impact of collision energy is that after the structure of the frame 10 of the bracket is deformed, all the electrical contacts 30 are deformed, causing the electrical contacts 30 to short-circuit. Therefore, the problem of the single battery 40 catching fire and exploding is related to the structure of the frame 10. In other words, the deformation of the frame 10 does not cause the short circuit of the electrical contacts 30. The present invention concentrates the deformation of the frame 10 in a certain place (the area of ​​the bottom plate 11), which can reduce the deformation of other areas of the bottom plate 11 and improve the problem of the single battery 40 catching fire and exploding. Therefore, the improvement of the present invention lies in the structure of the frame 10, and does not involve the electrical contacts 30 and the single battery 40. Therefore, based on the above-mentioned structure of the frame 10 of the present invention and related descriptions, those skilled in the art can understand the structural function of the frame 10 of the present invention.

[0054] It should be added that the experiment of the deformation decomposition bracket test collision fire of the present invention is carried out according to GB 43854-2024 "Safety Technical Specifications for Lithium-ion Batteries for Electric Bicycles". Specifically, before charging, the battery pack is discharged at a constant current of I2 (A) to the discharge termination voltage. Under a test environment of about 23°C, it is charged at 0.4I2 (A). When the terminal voltage of the battery pack reaches the charging limit voltage, it is switched to constant voltage charging until the charging current is less than or equal to 0.04I2 (A), and then left to stand for half an hour. Then, the battery pack is placed between a steel flat plate and a steel shaped plate. The radius of the semi-cylindrical head of the shaped plate is 75mm, and the length of the semi-cylindrical head is greater than the size of the squeezed single battery 40, but not more than 1m. During squeezing, the squeezing direction is the vehicle travel direction and the horizontal direction perpendicular to the driving direction. The squeezing speed is about 5mm / s. When the squeezing reaches 70% of the original size of the single battery 40, or when it is squeezed to 30KN, it is maintained for 5 minutes, and then the pressure is removed. Finally, the deformation degree of the impacted end wall 12 and the adjacent bottom plate 11 is obvious, which is much higher than the deformation degree of other bottom plates 11 .

[0055] Specifically, Figure 1 As shown, the side surface 13 of the frame body 10 is provided with a protrusion 14 hanging out of the side surface 13 , and the protrusion 14 corresponds to the bottom plate 11 , that is, the protrusion is located directly below and / or on the upper right of the bottom plate 11 .

[0056] The protrusion 14 is a long strip-shaped sheet-like structure protruding from the side surface 13 of the frame body 10 .

[0057] When the collision energy impacts the side surface 13 of the frame 10, it first contacts the protrusion 14 suspended from the side surface 13. Since the protrusion 14 corresponds to the bottom plate 11, when the collision energy impacts the protrusion 14 and deforms, the deformation of the protrusion 14 will directly squeeze the end wall 12 between the protrusion 14 and the bottom plate 11. After the end wall 12 is deformed, the deformed end wall 12 collapses into the bottom plate 11 area surrounded by the end wall 12. The deformation of the deformed end wall 12 is not easy to squeeze other adjacent bottom plate 11 areas, which is conducive to improving the situation of single battery 40 catching fire due to short circuit.

[0058] Specifically, Figure 1 , Figure 2 As shown, the connected end walls 12 are integrally molded or formed as a one-piece structure.

[0059] Specifically, Figure 3 As shown, a mounting tube 20 is provided on the front of the frame 10 , and the mounting tube 20 has a mounting opening 21 that passes through the upper and lower ends of the mounting tube 20 . A through opening is formed on the bottom plate 11 , and the diameter of the through opening is smaller than the mounting opening 21 , and the through opening is communicated with the mounting opening 21 .

[0060] Specifically, the single battery 40 is matched with the mounting opening 21 of the mounting tube 20. After the single battery 40 is embedded in the mounting opening 21, a through hole is provided so that the single battery 40 can be connected to the electrical contact piece 30 covered on the bottom plate 11. In order to support the single battery 40, the through hole is smaller than the mounting opening 21.

[0061] More specifically, if Figure 4 As shown, the installation opening 21 is a hole-shaped structure that is wide at the top and narrow at the bottom.

[0062] Specifically, the narrow size of the lower portion of the mounting opening 21 is adapted to the single battery 40, and the wide size of the upper portion of the mounting opening 21 is larger than the size of the single battery 40. Therefore, after the single battery 40 is mounted in the mounting opening 21, a gap is left between the upper portion of the mounting opening 21 and the single battery 40, and when the frame 10 is deformed by collision energy, the remaining gap can accommodate the deformation, thereby reducing the pressure of the deformation of the frame 10 on the single battery 40, and improving the problem of fire and explosion of the single battery 40 to a certain extent.

[0063] More specifically, if Figure 4 As shown, the width and depth of the installation opening 21 are greater than the narrowness and depth of the installation opening 21 .

[0064] Specifically, the material of the bottom plate 11 is a material that can be elastically or plastically deformed.

[0065] Specifically, the bottom plate 11 and the end wall 12 are connected to the frame body 10 as an integral structure, or are an integral structure formed by injection molding. Example 2

[0066] A deformable decomposition bracket, such as Figure 2 As shown, it includes a frame 10 , and a plurality of spaced bottom plates 11 are disposed on the back of the frame 10 . The bottom plates 11 are all distributed on the same end surface of the frame 10 , and the bottom plates 11 are the electrical connection position areas of the single cells 40 .

[0067] The side surface 13 of the frame body 10 is provided with a protrusion 14 suspended from the side surface 13 , and the protrusion 14 corresponds to the bottom plate 11 . The protrusion 14 is a long strip-shaped sheet-like structure protruding from the side surface 13 of the frame body 10 .

[0068] A notch structure 15 is provided in the area between the protrusion 14 and the adjacent bottom plate 11 .

[0069] The advantage of the present invention is that a recessed structure is provided between the protrusion 14 and the bottom plate 11, and the collision energy is concentrated on the protrusion 14 through the action of the protrusion 14 suspended from the side 13 of the frame 10, and the protrusion 14 is used as the "explosion point" of the collision energy. When the protrusion 14 is deformed by force, the deformation of the protrusion 14 invades the notch structure 15. At this time, the deformation of the protrusion 14 is accommodated by the notch structure 15, so that the protrusion 14 can be collapsed in the notch structure 15, which is beneficial to decomposing the collision impact force, reducing the collision impact force transmitted to the bottom plate 11, and not easily interfering with the electrical connection position area, which is beneficial to improving the occurrence of fire and explosion of the single battery 40.

[0070] The present invention is different from the prior art in that it is based on enhancing the anti-deformation performance of the bracket, thereby improving the problem of the single battery 40 catching fire and exploding.

[0071] The idea of ​​the present invention to improve the fire and explosion of the single battery 40 is to prevent the electrical connection area of ​​the single battery 40 from being affected after the frame 10 is deformed. The prior art does not consider this aspect.

[0072] It should be added that the experiment of the deformation decomposition bracket test collision fire of the present invention is carried out according to GB 43854-2024 "Safety Technical Specifications for Lithium-ion Batteries for Electric Bicycles". Specifically, before charging, the battery pack is discharged at a constant current of I2 (A) to the discharge termination voltage. Under a test environment of about 23°C, it is charged at 0.4I2 (A). When the terminal voltage of the battery pack reaches the charging limit voltage, it is switched to constant voltage charging until the charging current is less than or equal to 0.04I2 (A), and then left to stand for half an hour. Then, the battery pack is placed between a steel flat plate and a steel shaped plate. The radius of the semi-cylindrical head of the shaped plate is 75mm, and the length of the semi-cylindrical head is greater than the size of the squeezed single battery 40, but not more than 1m. During squeezing, the squeezing direction is the vehicle travel direction and the horizontal direction perpendicular to the driving direction. The squeezing speed is about 5mm / s. When the squeezing reaches 70% of the original size of the single battery 40, or when it is squeezed to 30KN, it is maintained for 5 minutes, and then the pressure is removed. Finally, the notch structure 15 of the deformation decomposition bracket is deformed obviously, while the deformation degree of the bottom plate 11 is much lower than that of the notch structure 15 .

[0073] Specifically, the notch structure 15 is a hole structure penetrating the front and back sides of the frame 10 , or the notch structure 15 is a recessed structure on the back side of the frame 10 or on the front side of the frame 10 . Example 3

[0074] A battery pack, such as Figure 5 As shown, the battery pack has the deformed decomposition bracket in the above-mentioned embodiment 1 or embodiment 2.

[0075] The battery pack also has a housing (not shown) and a single battery 40, which is embedded in the mounting opening 21 of the frame 10 of the deformable and decomposable bracket, and the bottom plate 11 of the frame 10 is covered with an electrical contact 30 that connects the single battery 40 in series. Finally, the frame 10 and the single battery 40 are placed in the housing for sealing.

[0076] It should be noted that the housing, the single battery 40 and the connection method are all based on the design standards of the battery pack in the prior art. The present invention does not make any improvements, so it will not be explained in detail.

[0077] Specifically, the bottom plate 11 is in a rhombus-shaped, long-slot shape, and the electrical connector 30 is also designed in this shape.

[0078] like Figure 5 As shown, the diamond-shaped electrical contact 30 can be engaged and fixed with the left and right corners of the bottom plate 11 area, and a gap can be left between the diamond-shaped electrical contact 30 and the upper and lower corners of the bottom plate 11 area. This gap is adjacent to the notch structure 15, so the deformation of the protrusion 14 intrudes and squeezes the lower corner of the bottom plate 11 area. Due to the existence of the gap, the electrical contact 30 will not be immediately compressed due to the existence of the gap. Even if the electrical contact 30 is compressed and deformed, the deformation of the electrical contact 30 can be reduced. The electrical contact 30 has a low degree of deformation (arching) and is not easy to contact with other metal structures in the battery pack, causing electrical contact and causing fire problems.

[0079] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A deformable and decomposable bracket, comprising a bracket body, characterized in that: The frame is provided with a plurality of spaced-apart bottom plates, and the bottom plates are all distributed on the same end surface of the frame; Each of the bottom plates has an end wall extending upwards, the end walls are connected end to end to form a fence surrounding the bottom plate, and adjacent fences are connected together so that the top surface of the end wall forms the back surface of the frame; The bottom plate surrounded by the end wall is formed as a recessed structure in the end wall, so that the structural strength of the end wall is stronger than that of the bottom plate.

2. The deformable and decomposable bracket according to claim 1, characterized in that: The connected end walls are integrally formed or formed as an integral structure.

3. The deformation and decomposition bracket according to claim 1, characterized in that: A mounting tube is provided on the front of the frame, and the mounting tube has a mounting opening that passes through the upper and lower ends of the mounting tube. A through opening is formed on the bottom plate, the diameter of the through opening is smaller than the mounting opening, and the through opening is communicated with the mounting opening.

4. The deformation and decomposition bracket according to claim 3, characterized in that: The installation opening is a hole-shaped structure that is wide at the top and narrow at the bottom.

5. The deformation and decomposition bracket according to claim 4, characterized in that: The width and depth of the installation opening are greater than the narrowness and depth of the installation opening.

6. The deformation and decomposition bracket according to claim 1, characterized in that: The base plate is made of a material that can be elastically or plastically deformed.

7. The deformation and decomposition bracket according to claim 1, characterized in that: The bottom plate and the end wall are connected with the frame to form an integral structure, or are injection-molded to form an integral structure.

8. A deformable and decomposable bracket, comprising a bracket body, characterized in that: A plurality of spaced bottom plates are provided on the back of the frame, and the bottom plates are all distributed on the same end surface of the frame; The side of the frame is provided with a raised portion hanging out of the side, and the raised portion corresponds to the bottom plate; A notch structure is provided in the area between the protruding portion and the base plate.

9. The deformation and decomposition bracket according to claim 8, characterized in that: The notch structure is a hole structure penetrating the front and back sides of the frame, or the notch structure is a recessed structure on the back side of the frame or the front side of the frame.

10. A battery pack, characterized in that: The battery pack has the deformable and decomposable bracket described in any one of claims 1 to 7, or has the deformable and decomposable bracket described in any one of claims 1 to 7.

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