Support mechanism, battery pack housing, battery pack, energy storage device

Abstract

The present invention provides a support mechanism, a battery pack housing, a battery pack, and an energy storage device, characterized in that the support mechanism includes a first support surface and a second support surface arranged opposite to each other, a support portion and a fastening rod are arranged between the first support surface and the second support surface, when the fastening rod is tightened, the first support surface and the second support surface move away from each other, and push and clamp the battery installed on the non-opposite surfaces of the first support surface and / or the second support surface inside the battery housing. The support mechanism provided by the present invention has a simple structure, is convenient to install, and has a low cost, and can effectively solve the problems of inconvenient fixing and poor effect of the battery cells in the energy storage device.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a support mechanism, a battery pack housing, a battery pack, and an energy storage device. Background Art

[0002] An energy storage device is a lithium-ion battery with a power above 5 kWh, which mainly works by the movement of lithium ions between the positive electrode and the negative electrode. During the production process of the energy storage device, it is necessary to assemble the prepared battery cells with the battery housing. To ensure the accuracy of the assembly, assembly tools are required to fix the battery cells and the battery housing. However, when the current fixing device clamps and fixes the battery housing, it is easy to cause the dislocation of the battery housing, affecting the assembly accuracy of the battery cells and the housing.

[0003] CN206878113U discloses a battery clamping tooling. The present utility model relates to a battery cell clamping tooling, including: a lower die for placing a plurality of battery cells arranged in an array; an upper die combined with the lower die to clamp and fix the plurality of battery cells, and then turn the plurality of battery cells upside down. Among them, the upper die includes a body, a limiting structure, a first clamping mechanism, and a second clamping mechanism. In the first direction of the body, the limiting structure and the first clamping mechanism are respectively arranged at opposite ends of the body, and the limiting structure and the first clamping mechanism cooperate to clamp the plurality of battery cells between them. In the second direction of the body, the second clamping mechanism is distributed on opposite sides of the body for fixing the upper die to the lower die, and the first direction and the second direction are perpendicular to each other. This battery cell clamping tooling realizes the upright assembly of battery cells. It solves the problem that in the power battery system, the battery cells need to be placed upside down during splicing, and all the operations of inverting and turning the battery cells are manual, thus reducing the labor intensity of workers.

[0004] CN105762308B discloses a fixing frame for a battery cell electrode group. The fixing frame for a battery cell electrode group includes a bottom plate and an upper cover. Elastic sheets and reinforcing ribs are arranged on the lower surface of the bottom plate and the upper surface of the upper cover. The upper cover is also provided with a grasping jack and a through hole, and the lower surface of the bottom plate is also provided with a bottom plate concave hole. The connection method between the bottom plate and the upper cover is a snap connection or an external clamping device connection. The materials of the bottom plate and the upper cover are materials such as aluminum, nickel, polypropylene, and polyethylene. The present invention also discloses a battery having this fixing frame for a battery cell electrode group. The present invention can prevent the dislocation and increased spacing of the battery cell electrodes during the production and assembly process, prevent the expansion and deformation of the battery housing, and ensure that the battery has excellent electrochemical performance. In addition, the present invention can also ensure that different types of batteries have an efficient assembly process and production consistency, improve the assembly accuracy and production efficiency of the battery, and reduce the manufacturing cost.

[0005] However, the above clamping tools and fixing methods are applicable to the assembly of general common vehicle-mounted power batteries, etc., and are not applicable to the fixed installation of high-power energy storage batteries. Summary of the Invention

[0006] To solve the above problems, a technical solution adopted by the present invention is to provide a support mechanism. The support mechanism includes a first support surface and a second support surface arranged opposite to each other.

[0007] A support portion and a fastening rod are arranged between the first support surface and the second support surface.

[0008] When the fastening rod is tightened, the first support surface and the second support surface move away from each other, and push and clamp the battery installed on the non-opposite surface of the first support surface and / or the second support surface inside the battery case.

[0009] Preferably, the support portion includes:

[0010] A group of first support components arranged between the first support surface and the second support surface. The first support components are a pair of wedge-shaped clamping blocks, including a first clamping block and a second clamping block. At most one of the first clamping block and the second clamping block is fixed on the first support surface. The first clamping block is provided with a through hole along the axial direction of the fastening rod, and the second clamping block is provided with a threaded hole along the axial direction of the fastening rod.

[0011] On the side of the second support surface opposite to the first support surface, a group of second support components is provided. The second support components include a trapezoidal support block. The trapezoidal support block is provided with a mounting hole along the axial direction of the fastening rod, and the trapezoidal support block can be inserted between the clamping blocks and clamped.

[0012] The fastening rod is provided with threads at least at its end, and sequentially passes through the first clamping block, the trapezoidal support block, and the second clamping block.

[0013] When the trapezoidal support block is inserted between the first clamping block and the second clamping block for assembly, the fastening rod is tightened, and the trapezoidal support block is clamped by the first clamping block and the second clamping block, so that the trapezoidal support block slides reversely under force, driving the first support surface and the second support surface to move away from each other, and pushing and clamping the battery installed on the non-opposite surface of the first support surface and / or the second support surface inside the battery case.

[0014] Preferably, the lower bottom surface of the trapezoidal support block faces the second support surface, and the inclined surfaces of the wedge-shaped clamping blocks are arranged opposite to the two side waists of the trapezoidal support block.

[0015] Preferably, the trapezoidal support block is fixedly arranged on the second support surface.

[0016] Preferably, the second support assembly further includes a limiting portion, the limiting portion includes a limiting baffle, and the limiting baffle is configured to accommodate the assembled first clamping block, second clamping block, and support block, and limit the non-axial movement of the first clamping block, second clamping block, and support block along the fastening rod; or

[0017] The limiting baffle is configured to accommodate the second clamping block and limit the non-axial movement of the second clamping block along the fastening rod.

[0018] Preferably, the mounting hole is runway-shaped.

[0019] Preferably, the support portion includes:

[0020] A set of support assemblies and a fastening rod fixedly arranged on one side of the first support surface relative to the second support surface, the support assembly includes a first clamping block and a second clamping block fixedly arranged on the first support surface, the first clamping block is provided with a through hole along the axial direction of the fastening rod, and the second clamping block is provided with a threaded hole along the axial direction of the fastening rod;

[0021] The support assembly further includes a support block, the center of the support block is eccentrically arranged towards the first support surface; the support block is provided with a mounting hole along the axial direction of the fastening rod;

[0022] The fastening rod sequentially passes through the first clamping block, the support block, and the second clamping block, at least the end of the fastening rod is provided with threads, and when the fastening rod rotates, it drives the support block to rotate along the axial direction of the fastening rod;

[0023] When the fastening rod rotates, the support block pushes the first support surface and the second support surface to move away from each other, and clamps the battery installed on the non-opposite surface of the first support surface and / or the second support surface in the battery housing.

[0024] Preferably, the support block is semicircular, and the center of the support block is biased towards the non-arc surface of the semicircle.

[0025] Preferably, the support assembly further includes a positioning pin, which simultaneously passes through the fastening rod and the support block along the radial direction of the fastening rod, so that the support block rotates together with the fastening rod.

[0026] To solve the above problems, another technical solution adopted by the present invention is to provide a battery housing including the above-mentioned support mechanism.

[0027] To solve the above problems, another technical solution adopted by the present invention is to provide the battery pack housing described in any one of the above.

[0028] To solve the above problems, another technical solution adopted by the present invention is to provide an energy storage system including the battery pack described above.

[0029] The beneficial effects of the present invention are as follows: By arranging a set of support mechanisms between the battery cases and arranging battery cells on both sides of the support mechanisms, and making the two support surfaces move away from each other by tightening the fastening rods of the support mechanisms, the battery cells on the non-opposite surfaces of the support surfaces are clamped with the cases, thus solving the problem that the existing support mechanisms cannot be applied to different placement methods of battery cells in the energy storage device. Moreover, this structure is convenient for installation, simple in structure, low in cost and good in effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the support mechanism in one embodiment;

[0031] Figure 2 It is a schematic diagram of the support mechanism in one embodiment;

[0032] Figure 3 It is a schematic diagram of the support mechanism in one embodiment;

[0033] Figure 4 It is a schematic diagram of the support mechanism in one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Hereinafter, the support mechanism, battery case, battery pack, and energy storage device of the present invention are specifically disclosed with appropriate reference to the drawings. However, there may be cases where unnecessary detailed descriptions are omitted. For example, there are cases where detailed descriptions of well-known matters and repeated descriptions of actually identical structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the drawings and the following description are provided for those skilled in the art to fully understand the present invention and are not intended to limit the subject matter recited in the claims.

[0036] If there is no special description, all embodiments and optional embodiments of the present invention can be combined with each other to form new technical solutions. If there is no special description, all technical features and optional technical features of the present invention can be combined with each other to form new technical solutions.

[0037] Unless otherwise specified, the terms "comprising" and "including" mentioned in the present invention are open-ended and can also be closed-ended. For example, "comprising" and "including" can mean that other components not listed can also be included or contained, or it can only include or contain the listed components.

[0038] It should be understood that relative terms such as "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0039] The above summary of the invention does not intend to describe every disclosed embodiment or every implementation of the present invention. The following description more specifically illustrates exemplary embodiments. Throughout the application, guidance is provided through a series of embodiments, which can be used in various combinations. In each instance, the listings are only representative groups and should not be construed as exhaustive.

[0040] As Figure 1 shown, a support mechanism includes a first support surface 11 and a second support surface 12 arranged opposite to each other. A set of support components and fastening components are arranged between the first support surface 11 and the second support surface 12. The support components include a pair of wedge-shaped clamping blocks, namely a first clamping block 131 and a second clamping block 132. The first clamping block 131 is provided with a through hole along the axial direction of the fastening rod, and the second clamping block 132 is provided with a threaded hole along the axial direction of the fastening rod. On the side of the second support surface 12 opposite to the first support surface 11, a set of second support components is provided. The second support components include a trapezoidal support block 133. The support block 133 is penetrated by a mounting hole 1331. The support block can be inserted between the first clamping block 131 and the second clamping block 132 and clamped. In this embodiment, the support block 133 is trapezoidal and can be combined with a pair of wedge-shaped clamping blocks. The lower bottom surface of the trapezoid faces the second support surface 12, the upper bottom surface faces the first support surface 11, and the two side waists of the trapezoid face the inclined surfaces of the clamping blocks.

[0041] The fastening rod 14 is provided with threads and can be screwed and fixed in cooperation with the threads of the first clamping block 131 and / or the second clamping block 132 after passing through the first clamping block 131, the support block 133, and the second clamping block 132 in sequence.

[0042] In some embodiments, the first clamping block 131 is fixedly arranged on the first support surface 11, the second clamping block 132 is free from the first support surface 11, the end of the fastening rod 14 passes through the second clamping block 132 to form a free end, the support block 133 is fixedly arranged on the second support surface 12. When the fastening rod 14 is tightened, the second clamping block 132 moves upward along the fastening rod 14, shortening the distance from the first clamping block 131. The support block 133 is squeezed by the two clamping blocks against each other, and the support block 133 moves in the opposite direction, driving the second support surface 12 and the first support surface 11 to move away from each other. At this time, the support mechanism is placed in the middle of the battery housing, and the batteries on both sides of the support mechanism are stressed in opposite directions and closely fit the battery housing to be fixedly clamped.

[0043] In some embodiments, the first clamping block 131 is free from the first support surface 11, and the second clamping block 132 is also free from the first support surface 11. The support block 133 is fixedly arranged on the second support surface 12. When the fastening rod 14 passes through the first clamping block 131, the support block 133 and the second clamping block 132 in sequence and is tightened, the distance between the first clamping block 131 and the second clamping block 132 is shortened. The support block 133 is squeezed by the two clamping blocks against each other, and the first clamping block 131 and the second clamping block 132 drive the first support surface 11 and the second support surface 12 to move away from each other. At this time, the support mechanism is placed in the middle of the battery housing, and the batteries on both sides of the support mechanism are stressed in opposite directions and closely fit the battery housing to be fixedly clamped.

[0044] In some embodiments, the shape of the clamping block can also be changed, such as rectangular, curved surface, irregular shape, etc. The angles of the inclined surfaces between the first clamping block 131 and the second clamping block 132 can also be different, and all can achieve the technical effects in the above embodiments to varying degrees.

[0045] Such as Figure 2 Or Figure 3As shown, in some embodiments, the second support assembly further includes a limiting portion. The limiting portion includes a limiting baffle 1332, which is configured to accommodate the assembled first clamping block 131, second clamping block 132, and support block 133, and restrict the radial movement of the first clamping block 131, second clamping block 132, and support block 133 along the fastening rod 14. When the second clamping block 132 is free from the first support surface 11 and the first clamping block 131 is fixedly arranged on the first support surface 11, the length of the limiting baffle can be comparable to the length of the second clamping block 132, facilitating the tightening of the fastening rod 14 and at the same time facilitating the alignment and assembly of the components between the first support surface 11 and the second support surface 12. When both the first clamping block 131 and the second clamping block 132 are free from the first support surface 11, the length of the limiting baffle 1332 can be comparable to the length of the fastening rod 14, or at least comparable to the length of the second clamping block 132, facilitating the alignment and assembly of the components between the first support surface 11 and the second support surface 12 and also facilitating the prevention of the clamping block from rotating when the fastening rod 14 is tightened.

[0046] In some embodiments, the mounting hole 1331 of the support block 133 is runway-shaped, providing sufficient clearance space for the reverse movement of the support block and the clamping block.

[0047] In some embodiments, the mounting hole of the support block 133 is a semi-circular open slot, which can further save materials and reduce weight on the basis of the above technical effects.

[0048] As Figure 4 shown, on one side of the first support surface 21 relative to the second support surface 22, a set of support assemblies is fixedly arranged. The support assemblies include two clamping blocks, namely the first clamping block 231 and the second clamping block 232. The first clamping block 231 has a through hole, and the second clamping block 232 has a threaded hole; the support assemblies further include a support block 233 and a fastening rod 24, and the fastening rod 24 is provided with threads. The fastening rod 24 sequentially passes through the first clamping block 231, the support block 233, and the second clamping block 232 and is tightened and locked. When the fastening rod 24 rotates, it drives the support block 233 to rotate along the axial direction of the fastening rod 24, and the center of the support block 233 is eccentrically arranged towards the first support surface 11; when the fastening rod 24 rotates, the support block 233 pushes the first support surface 11 and the second support surface 12 to move away from each other. At this time, the support mechanism is placed in the middle of the battery housing, and the batteries on both sides of the support mechanism are stressed in opposite directions and closely fit the battery housing and are fixedly clamped.

[0049] In some embodiments, the support block 233 is semi-circular, and the center of the support block 233 is biased towards the non-arc surface of the semi-circle, facilitating the straight surface to be closely attached to the first support surface 21 after the fastening rod 24 is locked and stabilizing the support block 233.

[0050] In some embodiments, the fixing method of the support block 233 and the fastening rod is glue bonding, welding, or asFigure 2 As shown, along the radial direction of the fastening rod 24, a positioning pin 241 is inserted through the support block 24 and the fastening rod 24, preferably a positioning spring pin.

[0051] In some embodiments, one end of the fastening rod 24 is a nut, and the other end is fixed by a limit clip 242 to prevent the fastening rod from falling off. The limit clip 242 cooperates with a limit groove 2421 on the fastening rod 24.

[0052] According to some embodiments of the present invention, a battery pack housing is provided, which includes the support mechanism in the above embodiments, and the battery pack housing is used for assembling batteries.

[0053] According to some embodiments of the present invention, a battery pack is provided, which includes the battery pack housing and the support mechanism in the above embodiments, and the battery pack is used for assembling a battery energy storage device.

[0054] According to some embodiments of the present invention, an energy storage device is provided, which includes the battery pack, the battery pack housing and the support mechanism in the above embodiments, and the energy storage device is used for energy storage and power supply indoors and outdoors.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0056] The above embodiments only express several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A support mechanism, characterized in that, The support mechanism includes a first support surface and a second support surface arranged opposite to each other. A support portion and a fastening rod are arranged between the first support surface and the second support surface. When the fastening rod is tightened, the first support surface and the second support surface move away from each other, pushing and clamping the battery installed on the non-opposite surface of the first support surface and / or the second support surface within the battery housing. The support portion includes: A set of first support components arranged between the first support surface and the second support surface. The first support components are a pair of wedge-shaped clamping blocks, including a first clamping block and a second clamping block. At most one of the first clamping block and the second clamping block is fixed on the first support surface. The first clamping block is provided with a through hole along the axial direction of the fastening rod, and the second clamping block is provided with a threaded hole along the axial direction of the fastening rod. On one side of the second support surface opposite to the first support surface, a set of second support components is arranged. The second support components include a trapezoidal support block. The trapezoidal support block is provided with a mounting hole along the axial direction of the fastening rod, and the trapezoidal support block can be inserted between the clamping blocks and be clamped. At least the end of the fastening rod is provided with threads and sequentially penetrates through the first clamping block, the trapezoidal support block, and the second clamping block. When the trapezoidal support block is inserted between the first clamping block and the second clamping block for assembly, the fastening rod is tightened, and the trapezoidal support block is clamped by the first clamping block and the second clamping block, so that the trapezoidal support block slides reversely under force, driving the first support surface and the second support surface to move away from each other, pushing and clamping the battery installed on the non-opposite surface of the first support surface and / or the second support surface within the battery housing. The lower bottom surface of the trapezoidal support block faces the second support surface, and the inclined surfaces of the wedge-shaped clamping blocks are arranged opposite to the two side waists of the trapezoidal support block; the trapezoidal support block is fixedly arranged on the second support surface.

2. The support mechanism according to claim 1, characterized in that, The second support component further includes a limiting portion. The limiting portion includes a limiting baffle, and the limiting baffle is configured to accommodate the assembled first clamping block, second clamping block, and support block and limit the non-axial movement of the first clamping block, second clamping block, and support block along the fastening rod; or The limiting baffle is configured to accommodate the second clamping block and limit the non-axial movement of the second clamping block along the fastening rod.

3. The support mechanism according to claim 1, characterized in that, The mounting hole is runway-shaped or U-shaped.

4. A battery pack housing, characterized in that, It includes the support mechanism according to any one of claims 1-3.

5. A battery pack, characterized in that, It includes the battery pack housing according to claim 4.

6. A energy storage device, characterized in that, It includes the battery pack according to claim 5.

7. A support mechanism, characterized in that, The support mechanism includes a first support surface and a second support surface arranged opposite to each other. A support portion and a fastening rod are arranged between the first support surface and the second support surface. When the fastening rod is tightened, the first support surface and the second support surface move away from each other, pushing and clamping the battery installed on the non-opposite surface of the first support surface and / or the second support surface within the battery housing. The support portion includes: A set of support components and fastening rods fixedly arranged on one side of the first support surface relative to the second support surface. The support components include a pair of first clamping blocks and second clamping blocks fixedly arranged on the first support surface. The first clamping block is provided with a through hole along the axial direction of the fastening rod, and the second clamping block is provided with a threaded hole along the axial direction of the fastening rod; The support components further include a support block, and the center of the support block is eccentrically arranged towards the first support surface; the support block is provided with a mounting hole along the axial direction of the fastening rod; The fastening rod sequentially penetrates through the first clamping block, the support block and the second clamping block. At least the end of the fastening rod is provided with threads. The support block is fixed on the fastening rod, and the fastening rod drives the support block to rotate along the axial direction of the fastening rod; When the fastening rod rotates, the support block pushes the first support surface and the second support surface to move away from each other, and clamps the battery installed on the non-opposite surface of the first support surface and / or the second support surface in the battery housing; the support block is semi-circular, and the center of the support block deviates towards the non-arc surface of the semi-circle; the support components further include a positioning pin, which simultaneously penetrates through the fastening rod and the support block along the radial direction of the fastening rod, so that the support block and the fastening rod rotate together.

8. A battery pack housing, characterized in that, Comprising the support mechanism according to claim 7.

9. A battery pack, characterized in that, Comprising the battery pack housing according to claim 8.

10. An energy storage device, characterized in that, Comprising the battery pack according to claim 9.

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