Adapter, battery pack and energy storage power supply

Abstract

The utility model provides an adapter, a battery pack and an energy storage power supply. The adapter is used for electrically connecting the battery cell. The adapter comprises a trunk part, a branch part and a deformation induction part. The branch part is configured to be electrically connected with the battery cell. The deformation inducing portion has a first end and a second end. The first end is connected to the main part, and the second end is connected to the branch part, so that the main part is separated from the branch part. A first direction is defined parallel to a direction from the first end to the second end. The deformation induction part is provided with a notch in the direction perpendicular to the first direction. The notch is located between the first end and the second end in the first direction. In the direction perpendicular to the first direction, the sectional area of the deformation induction part at the notch is smaller than the sectional area of any position of the trunk part and the branch part. According to the adapter, the battery pack and the energy storage power supply provided by the invention, the connection stability of the joint of the adapter and the battery cell is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to an adapter, a battery pack and an energy storage power supply. Background Art

[0002] The battery cells of energy storage devices are connected to other battery cells or circuit boards through adapters. In related technologies, when energy storage devices are subjected to high-frequency vibration or falling, the connection between the adapter and the battery cells is easily separated due to impact force, which in turn causes a circuit break or short circuit in the energy storage device, causing safety issues. Utility Model Content

[0003] In view of this, the present application provides an adapter, a battery pack and an energy storage power supply to improve the connection stability at the connection between the adapter and the battery cell.

[0004] One embodiment of the present application provides a transition piece for electrically connecting battery cells. The transition piece includes a main body, a branch portion, and a deformation inducing portion. The branch portion is configured to electrically connect the battery cells. The deformation inducing portion has a first end and a second end. The first end is connected to the main body, and the second end is connected to the branch portion, so that the main body is separated from the branch portion. A first direction is defined as being parallel to a direction from the first end to the second end. A notch is provided in the deformation inducing portion along a direction perpendicular to the first direction. The notch is located between the first end and the second end along the first direction. Along a direction perpendicular to the first direction, the cross-sectional area of ​​the deformation inducing portion at the notch is smaller than the cross-sectional area at any position of the main body and the branch portion.

[0005] In the above embodiment, when there is an acceleration difference between the battery cell and the adapter, the battery cell will cause an impact on the adapter. The deformation inducing portion is provided with a notch so that the cross-sectional area of ​​the structure extending from the adapter to the notch is minimized, thereby making the structure of the deformation inducing portion relatively weak and easier to deform when subjected to force than other positions of the adapter. When the impact force is transmitted from the battery cell to the adapter, the notch of the deformation inducing portion is induced by the weak structure of the notch to deform before other positions, thereby absorbing the impact brought by the battery cell and reducing the accumulation of shock waves at the connection between the branch portion and the battery cell, thereby reducing the degree of deformation of the branch portion, thereby improving the stability of the connection between the branch portion and the battery cell, and facilitating the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0006] In some embodiments of the present application, the deformation inducing portion is sunken to form a notch. The notch is sunken in a direction perpendicular to the first direction. The notch passes through opposite sides of the deformation inducing portion along the direction perpendicular to the notch and perpendicular to the first direction.

[0007] In the above embodiment, the notch runs through the two opposite sides, and the structure of the deformation inducing part on either side of the two opposite sides perpendicular to the notch recess direction is missing, which is not conducive to maintaining the initial shape of the notch, making the structure there weaker. After the branch part is impacted, the impact force is transmitted from the second end to the first end, and the impact force is more likely to cause deformation when it is transmitted to the notch, thereby maintaining the structural stability of the branch part, improving the stability of the connection between the branch part and the battery cell, and helping to improve the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0008] In some embodiments of the present application, along the first direction, the notch is an arc-shaped notch. When the notch is located between the main body and the branch, the interface between the notch and the surface of the adjacent deformation inducing portion transitions smoothly. When the notch is connected to the main body, the interface between the notch and the surface of the main body transitions smoothly. When the notch is connected to the branch, the interface between the notch and the surface of the branch transitions smoothly. And the notch transitions to other parts of the deformation inducing portion or the main body or the branch in an arc shape.

[0009] In the above embodiment, when the deformation inducing part induces deformation, the deformation is preferentially generated at the notch in a direction perpendicular to the first direction. The notch itself is arc-shaped and smoothly transitions with the adjacent surface. When the deformation inducing part induces deformation, the stress concentration at the notch is reduced to reduce the possibility of direct breakage at the notch due to deformation, which is conducive to maintaining the structural integrity of the adapter. Therefore, even if the deformation inducing part is deformed, the connection between the main body and the branch part can still be maintained, so as to maintain the normal operation of the battery cell.

[0010] In some embodiments of the present application, the adapter is a sheet structure. The main body, branch parts and deformation inducing parts are all part of the sheet structure. The second direction is defined as the width direction of the sheet structure. The third direction is defined as the thickness direction of the sheet structure. The first direction, the second direction and the third direction are mutually perpendicular. The sheet structure satisfies at least one of the following conditions a and b. a. Along the second direction, the width of the deformation inducing part at any position is smaller than the width at any position of the main body and the branch part. b. Along the third direction, the thickness of the deformation inducing part at any position is smaller than the thickness at any position of the main body and the branch part.

[0011] In the above embodiment, if the width of the deformation inducing portion is smaller than the width of the main body and the branch portion, or the thickness of the deformation inducing portion is smaller than the thickness of the main body and the branch portion, then when the main body of the adapter extends to the branch portion through the deformation inducing portion, it will be narrowed on at least one side of the position of the deformation inducing portion, so that the overall deformation inducing portion is weaker than the main body and the branch portion structure. That is, compared with the main body and the branch portion, the deformation inducing portion first induces deformation, and then further strengthens the inducing effect of deformation through the notch, which is conducive to improving the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0012] In some embodiments of the present application, along a direction perpendicular to the first direction, a cross-sectional area at any position of the deformation inducing portion is smaller than a cross-sectional area at any position of the main portion and the branch portion.

[0013] In the above embodiment, when the main body of the adapter extends to the branch part through the deformation inducing part, the diameter of the deformation inducing part becomes smaller, so that the deformation inducing part is weaker than the main body and the branch part. That is, compared with the main body and the branch part, the deformation inducing part first induces deformation, and then further strengthens the inducing effect of deformation through the notch, which is conducive to improving the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0014] In some embodiments of the present application, along the first direction, an extension length of the deformation inducing portion is smaller than an extension length of the main portion and the branch portion.

[0015] In the above embodiment, after the branch portion receives the impact, the impact force is transmitted through the branch portion, the deformation inducing portion and the main portion in sequence, among which the extension length of the deformation inducing portion is the shortest. Therefore, the impact borne by the deformation inducing portion per unit extension length is relatively greater. Therefore, on the basis of the weak structure of the deformation inducing portion, it is easier to induce deformation, which is beneficial to improving the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0016] In some embodiments of the present application, the third direction is defined to be perpendicular to the first direction. The branch portion is configured to electrically connect the battery cell along one side of the third direction. When the deformation inducing portion extends along the first direction, the deformation inducing portion at least partially arches along the third direction to form an arched portion.

[0017] In the above embodiment, the battery cell causes an impact on the branch portion along the third direction, and the arched portion can be deformed in the third direction to absorb the impact force, so as to enhance the ability of the deformation inducing portion to induce deformation, thereby facilitating the improvement of the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0018] In some embodiments of the present application, the third direction is defined to be perpendicular to the first direction. The branch portion includes a first connection portion and a second connection portion. The first connection portion is connected to the second connection portion and is distributed along the extension direction of the branch portion. The first connection portion is configured to electrically connect the battery cell. The second end and the first connection portion are respectively bent and connected to the second connection portion, so that the first connection portion and the deformation inducing portion form a height difference along the third direction.

[0019] In the above embodiment, the second connection part can be supported between the first connection part and the second end of the deformation inducing part in the third direction, and the second connection part in the branch part can extend in the third direction. When the battery cell impacts the branch part along the third direction, the impact force borne by the first connection part can be transmitted to the deformation inducing part through the second connection part along the third direction, thereby reducing the possibility of the impact force acting on the inside of the branch part in the third direction during the transmission along the branch part, which is beneficial to maintaining the structural stability of the branch part. In addition, the second connection part transmits the impact force to the second end of the deformation inducing part along the third direction, reducing the energy loss of the impact force in the direction perpendicular to the third direction, so that the deformation inducing part absorbs more impact force, which is beneficial to make the deformation inducing part deform before the main body and the branch part, so as to enhance the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0020] An embodiment of the present application provides a battery pack. The battery pack includes a battery holder, a battery cell, and a switching member as described in any of the above embodiments. The battery cell is connected to the battery holder. The branch portion is electrically connected to the battery cell.

[0021] In the above embodiment, the battery pack connects the battery cell to an adapter having a deformation inducing portion to improve the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling, thereby improving the structural stability of the battery pack and enhancing the anti-destruction ability of the battery pack during vibration and falling.

[0022] An embodiment of the present application provides an energy storage power supply. The energy storage power supply includes a housing and a battery pack as described in any of the above embodiments. The battery pack is disposed in the housing.

[0023] In the above embodiment, the energy storage power supply is provided with a battery pack having excellent anti-destruction capability in case of vibration and falling, which is beneficial for the energy storage power supply to stably output or input current in a more severe environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope.

[0025] Figure 1 A schematic diagram of the structure of an energy storage power supply provided in one embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of a battery pack provided in one embodiment of the present application;

[0027] Figure 3 for Figure 2 The schematic diagram of the structure of the intermediate transfer component;

[0028] Figure 4 for Figure 3 A magnified view of part A;

[0029] Figure 5 for Figure 3 A schematic diagram of another structural form of the intermediate transfer component;

[0030] Figure 6 for Figure 3 A schematic diagram of the structure of another form of the intermediate transfer component.

[0031] Main component symbols

[0032] 100-Adapter 200-Battery Pack 300-Energy Storage Power Supply

[0033] 10-main body 20-branch part 21-first connection part

[0034] 22-second connection part 30-deformation inducing part 31-first end

[0035] 32- second end 33- notch 34- arched portion

[0036] 201-battery core 301-shell

[0037] X-first direction Y-second direction Z-third direction DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0040] The terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0041] The battery cells of energy storage devices are connected to other battery cells or circuit boards through adapters. In related technologies, when energy storage devices are subjected to high-frequency vibration or falling, the connection between the adapter and the battery cells is easily separated due to impact force, which in turn causes a circuit break or short circuit in the energy storage device, causing safety issues.

[0042] Embodiments of the present application provide an adapter, a battery pack and an energy storage power supply. The adapter is used to electrically connect battery cells. The adapter includes a main body, a branch and a deformation inducing portion. The branch is configured to electrically connect the battery cells. The deformation inducing portion has a first end and a second end. The first end is connected to the main body, and the second end is connected to the branch so that the main body is separated from the branch. A first direction is defined as being parallel to a direction from the first end to the second end. A notch is provided in the deformation inducing portion along a direction perpendicular to the first direction. The notch is located between the first end and the second end along the first direction. Along a direction perpendicular to the first direction, the cross-sectional area of ​​the deformation inducing portion at the notch is smaller than the cross-sectional area at any position of the main body and the branch.

[0043] When there is an acceleration difference between the battery cell and the adapter, the battery cell will cause an impact on the adapter. The deformation inducing part is provided with a notch so that the cross-sectional area of ​​the structure extending from the adapter to the notch is minimized, thereby making the structure of the deformation inducing part relatively weak and easier to deform than other positions of the adapter when subjected to force. When the impact force is transmitted from the battery cell to the adapter, the notch of the deformation inducing part is induced by the weak structure of the notch to deform before other positions, thereby absorbing the impact brought by the battery cell and reducing the accumulation of shock waves at the connection between the branch part and the battery cell, thereby reducing the degree of deformation of the branch part, thereby improving the stability of the connection between the branch part and the battery cell, and helping to improve the anti-destruction ability of the connection between the adapter and the battery cell during vibration and falling.

[0044] In the related art, the adapter and the battery cell are connected by welding. When the battery cell is fixed in the battery pack or energy storage power supply, usually the two ends of the battery cell are not tightly against the fixed structure, but a certain assembly gap is left. Due to the limitations of manufacturing efficiency and manufacturing process, the assembly gaps of different battery cells may be different. In the case of high-frequency vibration or falling, the displacement distances of different battery cells are different, and the displacement distances of the battery cells and the adapter are different, which causes at least part of the battery cell to be displaced relative to the connected adapter, which can easily cause the solder joints between the battery cell and the adapter to break.

[0045] In the present application, a deformation inducing part is provided between the main body and the branch part, so that the deformation inducing part is more likely to deform than the main body and the branch part. In high-frequency vibration or falling scenes, when subjected to an acceleration of about 3g, for example, the deformation inducing part can induce itself to deform first, effectively absorbing the impact force borne by the adapter, thereby preventing the branch part from being excessively deformed, causing it to be detached from the solder joint of the battery cell, and improving the anti-destruction ability during vibration and falling.

[0046] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] See also Figure 1One embodiment of the present application provides an energy storage power supply 300. The energy storage power supply 300 has the functions of storing and discharging electricity, and can be used for home backup power, production unit backup power, outdoor work, outdoor entertainment, etc.

[0048] See also Figure 1 and Figure 2 In some embodiments, the energy storage power supply 300 includes a housing 301 and a battery pack 200. The battery pack 200 is disposed in the housing 301. The housing 301 is used to protect the battery pack 200. It is understood that in some embodiments, the battery pack 200 can be independently disposed from the housing 301 and used as a backup power supply (also called a power pack) for supplementing the energy storage power supply 300.

[0049] In some embodiments, the energy storage power supply 300 includes a power conversion module (not shown). The power conversion module is arranged in the housing 301. The housing 301 protects the power conversion module. The power conversion module is electrically connected to the battery pack 200. The power conversion module is used to realize the AC-DC conversion control of the output current of the battery pack 200. The energy storage power supply 300 provided with the power conversion module can be a small portable mobile power supply, a household energy storage power supply, an industrial and commercial energy storage power supply, or a container-type energy storage power supply.

[0050] In some embodiments, the power conversion module can be omitted. The energy storage power supply 300 without the power conversion module can be used independently. The energy storage power supply 300 without the power conversion module can usually only output direct current. When the energy storage power supply 300 without the power conversion module is used independently, it can be used in coordination with the energy storage power supply 300 with the power conversion module as a power supply system that provides additional battery capacity.

[0051] See also Figure 2 In some embodiments, the battery pack 200 includes a battery holder (not shown), a battery cell 201, and an adapter 100. The battery cell 201 is connected to the battery holder. The battery holder constrains and fixes the battery cell 201. The adapter 100 is used to electrically connect the battery cell 201 so that the battery cell 201 outputs or inputs current.

[0052] See also Figure 2 It is understandable that in some embodiments, a plurality of battery cells 201 are provided. The plurality of battery cells 201 are connected via the adapter 100 .

[0053] In some embodiments, the battery pack 200 further includes a circuit board (not shown). The battery cell 201 is connected to the circuit board via the adapter 100. It is understood that in some embodiments, the circuit board may be a BMS (Battery Management System) board or a PSDR (Power Supply Driver) board. In other embodiments, the circuit board may be omitted.

[0054] See also Figure 2 and Figure 3 In some embodiments, the adapter 100 includes a main body 10, a branch 20, and a deformation inducing portion 30. The branch 20 is configured to electrically connect the battery cell 201. The deformation inducing portion 30 has a first end 31 and a second end 32. The first end 31 is connected to the main body 10, and the second end 32 is connected to the branch 20, so that the main body 10 is separated from the branch 20.

[0055] See also Figure 2 and Figure 3 In some embodiments, the adapter 100 may be connected to the circuit board through the trunk 10. The adapter 100 may be connected to the battery cell 201 through the branch portion 20, or may be connected to the circuit board through the branch portion 20.

[0056] See also Figures 2 to 4 In some embodiments, the first direction is defined to be parallel to the direction from the first end 31 to the second end 32. The second direction is defined to be perpendicular to the first direction, and the third direction is defined to be perpendicular to the first direction, and the first direction, the second direction, and the third direction are mutually perpendicular. The first direction is the direction parallel to X in the diagram, the second direction is the direction parallel to Y in the diagram, and the third direction is the direction parallel to Z in the diagram. For the convenience of referring to the diagram, the first direction is hereinafter represented by "first direction X", the second direction is represented by "second direction Y", and the third direction is represented by "third direction Z".

[0057] See also Figures 2 to 4 In some embodiments, the branch portion 20 is configured to electrically connect the battery cell 201 along one side of the third direction Z.

[0058] See also Figures 2 to 4 In some embodiments, the deformation inducing portion 30 is provided with a notch 33 along a direction perpendicular to the first direction X. The notch 33 is located between the first end 31 and the second end 32 along the first direction X. Along the direction perpendicular to the first direction X, the cross-sectional area of ​​the deformation inducing portion 30 at the notch 33 is smaller than the cross-sectional area at any position of the main portion 10 and the branch portion 20.

[0059] When there is an acceleration difference between the battery cell 201 and the adapter 100, the battery cell 201 will cause an impact on the adapter 100. The deformation inducing part 30 is provided with a notch 33 so that the cross-sectional area of ​​the structure extending from the adapter 100 to the notch 33 is the smallest, so that the structure of the deformation inducing part 30 is relatively weak and is easier to deform than other positions of the adapter 100 when subjected to force. When the impact force is transmitted from the battery cell 201 to the adapter 100, the notch 33 of the deformation inducing part 30 is induced by the weak structure of the notch 33 to deform before other positions, absorb the impact brought by the battery cell 201, and reduce the accumulation of shock waves at the connection between the branch part 20 and the battery cell 201, so as to reduce the deformation degree of the branch part 20, thereby improving the stability of the connection between the branch part 20 and the battery cell 201, which is conducive to improving the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0060] Optionally, the battery pack 200 connects the battery cell 201 to the adapter 100 having the deformation inducing portion 30 to improve the anti-destruction capability of the connection between the adapter 100 and the battery cell 201 during vibration and falling, thereby improving the structural stability of the battery pack 200, so that the anti-destruction capability of the battery pack 200 during vibration and falling is enhanced. The energy storage power supply 300 is provided with a battery pack 200 with excellent anti-destruction capability during vibration and falling, which is conducive to the energy storage power supply 300 being able to stably output or input current in a more severe environment.

[0061] It can be understood that, in some embodiments, the impact between the battery cell 201 and the adapter 100 includes the impact of the battery cell 201 moving toward the adapter 100 and the impact of the battery cell 201 moving away from the adapter 100 .

[0062] See also Figures 2 to 4 It can be understood that in some embodiments, any position in the trunk 10 is the portion between the connection between the trunk 10 and the first end 31 and the end extending away from the first end 31 along the first direction X, or the portion between the connection with other structures outside the trunk 10. Any position in the branch 20 is the portion between the connection between the branch 20 and the battery cell 201 and the connection between the branch 20 and the second end 32, and the portion between the connection between the branch 20 and the battery cell 201 and the end of the branch 20 extending away from the deformation inducing portion 30 can be ignored. On the one hand, this section of structure that can be ignored usually has a very short extension length and does not affect the overall structure, so it can be ignored; on the other hand, this section of structure that can be ignored has no fixed connection relationship with other structures outside the branch 20, so it is difficult to deform when impacted, and has little effect on the stability of the connection between the branch 20 and the battery cell 201, so it can be ignored.

[0063] See also Figures 2 to 4In some embodiments, the deformation inducing portion 30 is recessed to form a notch 33. The recessed direction of the notch 33 is perpendicular to the first direction X. The notch 33 penetrates the opposite sides of the deformation inducing portion 30 along the recessed direction perpendicular to the notch 33 and perpendicular to the first direction X. The recess of the notch 33 is not used to limit the molding process of the notch 33, but is only used to indicate the shape of the channel relative to the surface of other positions of the deformation inducing portion 30. As an illustrative example, when the recessed direction of the notch 33 is the second direction Y, the notch 33 penetrates the opposite sides of the deformation inducing portion 30 along the third direction Z; when the recessed direction of the notch 33 is the third direction Z, the channel penetrates the opposite sides of the deformation inducing portion 30 along the second direction Y.

[0064] The notch 33 runs through the two opposite sides, and the structure of the deformation inducing portion 30 on either side of the two opposite sides perpendicular to the concave direction of the notch 33 is missing, which is not conducive to maintaining the initial shape of the notch 33, making the structure there weaker. When the branch portion 20 is impacted, the impact force is transmitted from the second end 32 to the first end 31, and the impact force is more likely to cause deformation when it is transmitted to the notch 33, thereby maintaining the structural stability of the branch portion 20, improving the stability of the connection between the branch portion 20 and the battery cell 201, and helping to improve the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0065] In other embodiments, the notch 33 may not penetrate through the two opposite sides of the deformation inducing portion 30 , but may be in the shape of a “pit”.

[0066] See also Figures 2 to 4 In some embodiments, along the first direction X, the notch 33 is an arc-shaped notch 33. When the notch 33 is located between the main body 10 and the branch 20, the interface between the notch 33 and the surface of the adjacent deformation inducing portion 30 is smoothly transitioned. When the notch 33 is connected to the main body 10, the interface between the notch 33 and the surface of the main body 10 is smoothly transitioned. When the notch 33 is connected to the branch 20, the interface between the notch 33 and the surface of the branch 20 is smoothly transitioned. And the notch 33 is arc-shapedly transitioned to other parts of the deformation inducing portion 30 or the main body 10 or the branch 20.

[0067] When the deformation inducing portion 30 induces deformation, deformation is preferentially generated at the notch 33 in a direction perpendicular to the first direction X. The notch 33 itself is arc-shaped and smoothly transitions with the adjacent surface. When the deformation inducing portion 30 induces deformation, the stress concentration at the notch 33 is reduced to reduce the possibility of direct breakage at the notch 33 due to deformation, which is beneficial to maintaining the structural integrity of the adapter 100. Therefore, even if the deformation inducing portion 30 is deformed, the connection between the trunk portion 10 and the branch portion 20 can still be maintained, so as to maintain the normal operation of the battery cell 201.

[0068] In other embodiments, the notch 33 may be a triangular notch 33 , a square notch 33 or other shapes.

[0069] See also Figures 2 to 4 In some embodiments, the adapter 100 is a sheet structure. The main body 10, the branch part 20 and the deformation inducing part 30 are all part of the sheet structure. The width direction of the sheet structure is the second direction Y, and the thickness direction of the sheet structure is the third direction Z. The sheet structure satisfies at least one of the following conditions a and b. a. Along the second direction Y, the width of the deformation inducing part 30 at any position is smaller than the width of the main body 10 and the branch part 20 at any position. b. Along the third direction Z, the thickness of the deformation inducing part 30 at any position is smaller than the thickness of the main body 10 and the branch part 20 at any position. The sheet structure may only satisfy condition a, or only satisfy condition b, or satisfy both conditions a and b.

[0070] If the width of the deformation inducing portion 30 is smaller than the width of the main body 10 and the branch 20 or the thickness of the deformation inducing portion 30 is smaller than the thickness of the main body 10 and the branch 20, then when the main body 10 of the adapter 100 extends to the branch 20 through the deformation inducing portion 30, it will be narrowed on at least one side of the position of the deformation inducing portion 30, so that the overall structure of the deformation inducing portion 30 is weaker than that of the main body 10 and the branch 20. That is, compared with the main body 10 and the branch 20, the deformation inducing portion 30 first induces deformation, and then further strengthens the inducing effect of deformation through the notch 33, which is conducive to improving the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0071] See also Figures 2 to 4 In some embodiments, along the direction perpendicular to the first direction X, the cross-sectional area of ​​the deformation inducing portion 30 at any position is smaller than the cross-sectional area of ​​the main portion 10 and the branch portion 20 at any position.

[0072] When the main body 10 of the adapter 100 extends to the branch part 20 through the deformation inducing part 30, the diameter of the deformation inducing part 30 becomes smaller, so that the deformation inducing part 30 is weaker than the main body 10 and the branch part 20. That is, compared with the main body 10 and the branch part 20, the deformation inducing part 30 first induces deformation, and then further strengthens the inducing effect of deformation through the notch 33, which is beneficial to improve the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0073] In other embodiments, on the basis that the cross-sectional area at any position of the deformation inducing portion 30 is smaller than the cross-sectional area at any position of the main body 10 and the branch portion 20, it can be allowed that: the width at any position of the deformation inducing portion 30 is smaller than the width at any position of the main body 10 and the branch portion 20, and the thickness at any position of the deformation inducing portion 30 is slightly larger than the thickness at any position of the main body 10 and the branch portion 20; or the thickness at any position of the deformation inducing portion 30 is smaller than the thickness at any position of the main body 10 and the branch portion 20, and the width at any position of the deformation inducing portion 30 is slightly larger than the width at any position of the main body 10 and the branch portion 20.

[0074] See also Figures 2 to 4 In some embodiments, along the first direction X, the extension length of the deformation inducing portion 30 is smaller than the extension lengths of the trunk portion 10 and the branch portion 20 .

[0075] After the branch portion 20 receives the impact, the impact force is transmitted sequentially through the branch portion 20, the deformation inducing portion 30, and the main portion 10. Among them, the extension length of the deformation inducing portion 30 is the shortest. Therefore, the impact borne by the deformation inducing portion 30 per unit extension length is relatively greater. Therefore, on the basis of the weak structure of the deformation inducing portion 30, it is easier to induce deformation, which is beneficial to improve the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0076] See also Figure 5 In some embodiments, when the deformation inducing portion 30 extends along the first direction X, the deformation inducing portion 30 is at least partially arched along the third direction Z to form an arched portion 34 .

[0077] The battery cell 201 impacts the branch portion 20 along the third direction Z, and the arch portion 34 can deform in the third direction Z to absorb the impact force, so as to enhance the ability of the deformation inducing portion 30 to induce deformation, thereby facilitating the improvement of the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0078] See also Figure 5 It can be understood that in some embodiments, the cross section of the arched portion 34 perpendicular to the second direction Y is a semicircular ring. In other embodiments, when the arched portion 34 extends along the first direction X, it can be a broken line structure or a wavy structure in the third direction Z.

[0079] See also Figure 5 It can be understood that in some embodiments, the notch 33 is located where the arch 34 is located, which is beneficial to improving the ability of inducing deformation at the notch 33.

[0080] See also Figures 2 to 4In some embodiments, the branch portion 20 includes a first connection portion 21 and a second connection portion 22. The first connection portion 21 is connected to the second connection portion 22 and is distributed along the extension direction of the branch portion 20. The first connection portion 21 is configured to electrically connect the battery cell 201. The second end 32 and the first connection portion 21 are respectively bent and connected to the second connection portion 22, so that the first connection portion 21 and the deformation inducing portion 30 form a height difference along the third direction Z.

[0081] The second connection part 22 can be supported between the first connection part 21 and the second end 32 of the deformation inducing part 30 in the third direction Z, and the second connection part 22 in the branch part 20 can extend in the third direction Z. When the battery cell 201 impacts the branch part 20 along the third direction Z, the impact force borne by the first connection part 21 can be transmitted to the deformation inducing part 30 along the third direction Z through the second connection part 22, thereby reducing the possibility of the impact force acting on the inside of the branch part 20 in the third direction Z during the transmission process along the branch part 20, which is conducive to maintaining the structural stability of the branch part 20. In addition, the second connection part 22 transmits the impact force to the second end 32 of the deformation inducing part 30 along the third direction Z, reducing the energy loss of the impact force in the direction perpendicular to the third direction Z, so that the deformation inducing part 30 absorbs more impact force, which is conducive to causing the deformation inducing part 30 to deform before the main body 10 and the branch part 20, so as to improve the anti-destruction ability of the connection between the adapter 100 and the battery cell 201 during vibration and falling.

[0082] See also Figures 2 to 4 It can be understood that in some embodiments, the second connection portion 22 and the first connection portion 21 and the second end 32 have a smooth arc-shaped transition, which is conducive to reducing stress concentration. In other embodiments, the second connection portion 22 and the first connection portion 21 and the second end 32 have a folded surface transition.

[0083] See also Figure 3 , Figure 4 and Figure 6 In some embodiments, a plurality of branches 20 are provided. The trunk 10 is connected to a plurality of branches 20. Each branch 20 is connected to a battery cell 201. The number of deformation inducing portions 30 is equal to or less than the number of branches 20. If the number of deformation inducing portions 30 is equal to the number of branches 20, each branch 20 is connected to the trunk 10 through one deformation inducing portion 30. If the number of deformation inducing portions 30 is less than the number of branches 20, each deformation inducing portion 30 connects the trunk 10 to one branch 20, and some branches 20 are directly connected to the trunk 10 without passing through the deformation inducing portions 30.

[0084] See also Figure 3 and Figure 6In some embodiments, when there are multiple battery cells 201 , some of the battery cells 201 are easily disconnected from the branch portions 20 , and the deformation inducing portion 30 is only provided between the main body 10 and the corresponding branch portions 20 .

[0085] See also Figure 3 and Figure 6 In some embodiments, when there are multiple deformation inducing portions 30, the first direction X, the second direction Y, and the third direction Z are based on the deformation inducing portion 30 to be observed. That is, if the extension directions between the first end 31 and the second end 32 of different deformation inducing portions 30 are different, then for the reference to directions in the relevant descriptions of the structures of different deformation inducing portions 30, at least the first direction X is different and changes adaptively. As an illustrative example, the first direction, the second direction, and the third direction associated with the deformation inducing portion 30' and the connected branch portion 20' are the first direction X', the second direction Y', and the third direction Z'; the first direction, the second direction, and the third direction associated with the deformation inducing portion 30" and the connected branch portion 20" are the first direction X", the second direction Y", and the third direction Z".

[0086] See also Figure 2 and Figure 3 In some embodiments, for the same adapter 100, the trunk 10, the branch 20 and the deformation inducing portion 30 are an integrally formed structure. The adapter 100 can be manufactured by one or more manufacturing processes such as stamping, forging, cutting or casting, which are conventional technical means known to those skilled in the art and will not be described in detail herein.

[0087] In the present application, the relatively fixed arrangement of the two does not mean that they cannot be disassembled, but is intended to indicate that when the adapter 100, the battery pack 200 and the energy storage power supply 300 are in use, the relatively fixed two can move together; the first direction X, the second direction Y and the third direction Z are mutually perpendicular to each other, which does not mean that they are absolutely 90°, but a certain deviation is allowed as long as it does not constitute an obstacle to the structural size comparison of the various parts of the adapter 100.

[0088] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A switching component for electrically connecting a battery cell, characterized in that: The adapter comprises: Main cadre; A branch portion configured to electrically connect the battery cells; and A deformation inducing portion has a first end and a second end, wherein the first end is connected to the main portion, and the second end is connected to the branch portion so as to separate the main portion from the branch portion, and a first direction is defined that is parallel to the direction from the first end to the second end, and the deformation inducing portion is provided with a notch along a direction perpendicular to the first direction, and the notch is located between the first end and the second end along the first direction, and a cross-sectional area of ​​the deformation inducing portion at the notch along a direction perpendicular to the first direction is smaller than a cross-sectional area at any position of the main portion and the branch portion.

2. The adapter according to claim 1, characterized in that: The deformation inducing portion is recessed to form the notch, and the recessed direction of the notch is perpendicular to the first direction. The notch penetrates through two opposite sides of the deformation inducing portion along the recessed direction perpendicular to the notch and perpendicular to the first direction.

3. The adapter according to claim 2, characterized in that: Along the first direction, the notch is an arc-shaped notch, When the notch is located between the main body and the branch portion, the interface between the notch and the surface of the adjacent deformation inducing portion is smoothly transitioned; When the notch is connected to the main body, the interface between the notch and the surface of the main body is smoothly transitioned; When the notch is connected to the branch portion, the interface between the notch and the surface of the branch portion is smoothly transitioned.

4. The adapter according to claim 1, characterized in that: The adapter is a sheet structure, the main body, the branch part and the deformation inducing part are all part of the sheet structure, the second direction is defined as the width direction of the sheet structure, the third direction is defined as the thickness direction of the sheet structure, the first direction, the second direction and the third direction are perpendicular to each other; the sheet structure satisfies at least one of the following conditions a and b: a. along the second direction, the width of the deformation inducing portion at any position is smaller than the width of the trunk and the branch at any position; b. Along the third direction, the thickness of the deformation inducing portion at any position is smaller than the thickness of the main body and the branch portion at any position.

5. The adapter according to claim 1, characterized in that: Along a direction perpendicular to the first direction, a cross-sectional area at any position of the deformation inducing portion is smaller than a cross-sectional area at any position of the main portion and the branch portion.

6. The adapter according to claim 5, characterized in that: Along the first direction, an extension length of the deformation inducing portion is smaller than an extension length of the trunk portion and the branch portion.

7. The adapter according to claim 1, characterized in that: It is defined that a third direction is perpendicular to the first direction, and the branch portion is configured to electrically connect the battery cell along one side of the third direction. When the deformation inducing portion extends along the first direction, at least a portion of the deformation inducing portion arches along the third direction to form an arched portion.

8. The adapter according to claim 1, characterized in that: A third direction is defined to be perpendicular to the first direction, the branch portion includes a first connection portion and a second connection portion, the first connection portion is connected to the second connection portion and is distributed along the extension direction of the branch portion, the first connection portion is configured to electrically connect the battery cell, and the second end and the first connection portion are respectively bent and connected to the second connection portion so that the first connection portion and the deformation inducing portion form a height difference along the third direction.

9. A battery pack, characterized in that: It comprises a battery holder, a battery cell and an adapter as claimed in any one of claims 1 to 8, wherein the battery cell is connected to the battery holder, and the branch portion is electrically connected to the battery cell.

10. An energy storage power supply, characterized in that: The invention comprises a housing and a battery pack as claimed in claim 9, wherein the battery pack is arranged in the housing.

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