Battery stack assembling and positioning tool

Abstract

The utility model discloses a battery stack assembling and positioning tool which comprises a reference base, a plurality of reference stand columns are arranged on the reference base, each reference stand column is provided with a first positioning face, and a first positioning space used for positioning an end plate of a battery stack is defined by the first positioning faces. A positioning block is installed on the first positioning face of each reference stand column and provided with second positioning faces, a second positioning space used for positioning the battery stack plate frame is defined by the multiple second positioning faces, the positioning blocks comprise the fixed positioning block and the sliding positioning block, and the sliding positioning block is installed on the upper side of the fixed positioning block in a sliding mode; and the sliding positioning block and the fixed positioning block at least partially coincide in the vertical direction. Positioning of the cell stack end plate and the cell stack plate frame is achieved through the reference stand columns and the positioning blocks respectively, the stacking height of the cell stack is guaranteed through the sliding positioning blocks, interference in the pressing process is avoided, and the device has the advantages of being high in positioning precision, simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery stack assembly, in particular to a positioning tooling for battery stack assembly. Background Technique

[0002] A flow battery is an electrochemical energy storage device. Generally, end plates, liquid inlet and outlet plates, current collector plates, multiple groups of repeated electrode frames, diaphragms, electrode frame structures, current collector plates, liquid inlet and outlet plates and end plates are sequentially placed in a stacked manner, and finally assembled by means of screw tightening. The repeated structures are generally between several groups and dozens of groups. Since each component is relatively soft and the number of stacked groups is large, each component of the flow battery stack will be skewed during the stacking process, resulting in misalignment during the pressing process and affecting the battery quality. In order to reduce the human error of operators, reduce the labor intensity, and not affect the assembly quality of the stack during the intermediate rest period, a positioning tooling is mostly used to assemble the battery stack.

[0003] The existing positioning toolings are mainly two categories. One category is to drill positioning holes on the parts of the stack itself and insert screw rods for positioning. However, this type of positioning tooling needs to sleeve parts from a long positioning screw rod, which increases the installation difficulty of the stack, and is prone to jamming during the pressing process, resulting in problems such as incomplete pressing. The other category is to add springs and hydraulic mechanisms to meet the compressible height of the positioning tooling during compression. However, this type of positioning tooling has a complex design, high matching precision requirements, and high manufacturing costs.

[0004] Based on the above technical problems, this application proposes a positioning tooling for battery stack assembly. Content of the Utility Model

[0005] The purpose of the utility model is to provide a positioning tooling for battery stack assembly to solve the technical problems mentioned in the background technique. The purpose of the utility model is achieved through the following technical solutions:

[0006] A positioning tooling for battery stack assembly includes a reference base, and a plurality of reference columns are arranged on the reference base. The reference columns have a first positioning surface, and a plurality of first positioning surfaces enclose a first positioning space for positioning the end plate of the battery stack; a positioning block is installed on the first positioning surface of each reference column. The positioning block has a second positioning surface, and a plurality of second positioning surfaces enclose a second positioning space for positioning the plate frame of the battery stack. The positioning block includes a fixed positioning block and a sliding positioning block. The sliding positioning block is slidably installed on the upper side of the fixed positioning block, and the sliding positioning block and the fixed positioning block at least partially coincide in the vertical direction.

[0007] Furthermore, there are two positioning blocks, and the two positioning blocks are distributed up and down along the reference column.

[0008] Further, the reference base includes a connecting plate and a supporting base. A plurality of connecting grooves are formed in the connecting plate. The supporting base is installed on the connecting plate and is located at the center of the first positioning space.

[0009] Further, the connecting groove is a blade root groove or a dovetail groove.

[0010] Further, the reference column includes a bottom plate and a column. An oblong connecting hole is formed in the bottom plate; the column is vertically fixed on the bottom plate, and a reinforcing rib is fixed between the bottom plate and the column.

[0011] Further, a first mounting hole and a second mounting hole are formed in the reference column. The first mounting hole is oblong. The sliding positioning block is connected to the reference column by a bolt passing through the first mounting hole, and the fixed positioning block is connected to the reference column by a bolt passing through the second mounting hole.

[0012] Further, the second mounting hole is oblong.

[0013] Further, a guide groove is formed at the top of the fixed positioning block, and a guide rail is provided at the lower end of the sliding positioning block. The guide rail is slidably disposed in the guide groove.

[0014] The technical solution provided by the embodiment of the present application has at least the following technical effects or advantages:

[0015] 1. The positioning of the battery stack end plate and the battery stack frame are respectively realized through the reference column and the positioning block, and the sliding positioning block is used to ensure the stacking height of the battery stack and avoid interference during pressing, which has the advantages of high positioning accuracy, simple structure and low manufacturing cost;

[0016] 2. The position of the reference column on the reference base can be adjusted by using the connecting groove on the reference base to meet the assembly positioning of battery stacks of different sizes. The oblong shape on the bottom plate of the reference column can realize fine adjustment of the position of the reference column to meet the part tolerances and different external shapes of the battery stack, improving the applicable range of the positioning tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0018] Figure 1 It is a schematic view of the assembled state of Embodiment 1 of the present application;

[0019] Figure 2 It is the front view of the assembled state of Embodiment 1 of the present application;

[0020] Figure 3 It is the front view of the connection between the positioning block and the reference column in Embodiment 1 of the present application;

[0021] Figure 4 Cross-sectional view of the connection between the positioning block and the reference column in Embodiment 1 of the present application;

[0022] Figure 5 Schematic diagram of the assembled state in Embodiment 2 of the present application;

[0023] Figure 6 Left view of the connection between the positioning block and the reference column in Embodiment 2 of the present application.

[0024] Reference numerals in the drawings: 1, reference base; 11, connecting plate; 12, support base; 111, connecting groove; 2, reference column; 21, bottom plate; 211, connecting hole; 22, column; 221, first mounting hole; 222, second mounting hole; 23, reinforcing rib; 3, fixed positioning block; 31, guide groove; 4, sliding positioning block; 41, guide rail; 5, battery stack end plate; 6, battery stack plate frame. Detailed implementation manners

[0025] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] As Figure 1 shown, a battery stack assembly positioning tooling includes a reference base 1, a reference column 2 and a positioning block. A plurality of reference columns 2 are installed on the reference base 1. The reference column has a first positioning surface, and a plurality of first positioning surfaces enclose a first positioning space for positioning the battery stack end plate 5. The positioning block is installed on the first positioning surface of the reference column 2. The positioning block has a second positioning surface, and a plurality of second positioning surfaces enclose a second positioning space for positioning the battery stack plate frame 6. Among them, the positioning block includes a fixed positioning block 3 and a sliding positioning block 4. The sliding positioning block 4 is slidably installed on the upper side of the fixed positioning block 3, and the sliding positioning block 4 and the fixed positioning block 3 at least partially overlap in the vertical direction to realize continuous positioning of the battery stack plate frame 6.

[0027] Embodiment 1

[0028] As Figure 1 、 Figure 2As shown in the figure, the reference base 1 includes a connecting plate 11 and a supporting seat 12. The connecting plate 11 is a rectangular plate. Six connecting grooves 111 are provided on the upper end surface of the connecting plate 11. Four of the connecting grooves 111 are arranged parallel to any edge of the connecting plate 11, and the other two connecting grooves 111 are arranged along the diagonal of the connecting plate 11. The connecting groove 111 can be a blade root groove or a dovetail groove. In this embodiment, an inverted T-shaped blade root groove is adopted. In actual use, the number of connecting grooves 111 is determined according to the size of the battery stack. The larger the battery stack, the more the number of connecting grooves 111 can be increased accordingly.

[0029] The supporting seat 12 is a rectangular frame structure. The size of the supporting seat 12 is smaller than the size of the end plate 5 of the battery stack. The supporting seat 12 is installed on the connecting plate 11, and the supporting seat 12 is located at the center of the first positioning space to avoid the screw connection holes on the end plate 5 of the battery stack, which is convenient for using screws to lock the stacked battery stacks.

[0030] As Figure 1 , Figure 3 , Figure 4 shown, the reference column 2 includes a bottom plate 21, a column 22 and a reinforcing rib 23. The bottom plate 21 is a rectangular plate. The column 22 is vertically welded to the upper side of the bottom plate 21 along one side of the bottom plate 21. The surface of the column 22 that coincides with the bottom plate 21 is the first positioning surface. Three triangular reinforcing ribs 23 are welded and fixed between the bottom plate 21 and the column 22 to prevent the column 22 from deforming under pressure. After welding the reinforcing rib 23, the first positioning surface of the column 22 is machined a second time to ensure the behavioral tolerances of the bottom plate 21 and the column 22.

[0031] Four oblong connecting holes 211 are provided on the bottom plate 21. The bottom plate 21 is installed on the connecting plate 11 through bolts and ship-shaped nuts. The design of the oblong connecting holes 211 can finely adjust the position of the reference column 2 to meet the part tolerances and different external shapes of the battery stack.

[0032] As Figures 2 - 4 shown, a first mounting hole 221 and a plurality of second mounting holes 222 are provided on the column 22. The first mounting hole 221 is oblong. The sliding positioning block 4 is connected to the column 22 through bolts passing through the first mounting hole 221. The fixed positioning block 3 is fixedly connected to the column 22 through bolts passing through the second mounting holes 222. The surfaces of the fixed positioning block 3 and the sliding positioning block 4 away from the column 22 are the second positioning surfaces. To ensure the flatness and straightness of the second positioning surface, the contact surfaces of the fixed positioning block 3, the sliding positioning block 4 and the column 22 are all machined. Among them, a shallow groove is also provided on the column 22 to increase the contact area between the fixed positioning block 3 and the column 22 and prevent the fixed positioning block 3 from shifting.

[0033] As Figure 3As shown in the figure, a guide groove 31 is formed at the top of the fixed positioning block 3, and a guide rail 41 is fixed to the lower end of the sliding positioning block 4. The guide rail 41 is slidably installed in the guide groove 31. The design of the guide groove 31 and the guide rail 41 can improve the stability of the movement of the sliding positioning block 4 and ensure the positioning function between the sliding positioning block 4 and the fixed positioning block 3.

[0034] The usage method of Embodiment 1 is as follows:

[0035] First, install the reference column 2 on the reference base 1, and place the battery stack end plate 5 in the first positioning space surrounded by the reference column 2;

[0036] Then, install the positioning blocks on the reference column 2, make the lower end of the fixed positioning block 3 abut against the upper surface of the battery stack end plate 5, the sliding positioning block 4 is at the highest point and locked with the reference column 2, and stack and place the battery stack components in the second positioning space surrounded by the positioning blocks;

[0037] Finally, place the battery stack end plate 5 on the top of the stacked battery stack components, and move the positioning tooling under the press. Loosen the bolts of the sliding positioning block 4 for pressing. During the pressing process, the sliding positioning block 4 slides down as the battery stack is compressed, avoiding interference with the pressing operation.

[0038] Embodiment 2

[0039] As Figure 5 、 Figure 6 shown, the technical solution of Embodiment 2 is exactly the same as that of Embodiment 1, and the only difference is that:

[0040] Two groups of first mounting holes 221 and second mounting holes 222 are respectively formed on each column 22. The first mounting holes 221 and the second mounting holes 222 are both oblong, and the length of the first mounting holes 221 is greater than the length of the second mounting holes 222. Two sliding positioning blocks 4 are respectively connected to the column 22 by bolts passing through the first mounting holes 221, and two fixed positioning blocks 3 are fixedly connected to the column 22 by bolts passing through the second mounting holes 222.

[0041] The usage method of Embodiment 2 is as follows:

[0042] First, install the reference column 2 on the reference base 1, and place the battery stack end plate 5 in the first positioning space surrounded by the reference column 2;

[0043] Then, install a set of positioning blocks on the lower half of the reference column 2, make the lower end of the fixed positioning block 3 abut against the upper surface of the battery stack end plate 5, the sliding positioning block 4 is at the highest point and locked with the reference column 2, and stack and place the battery stack components in the second positioning space surrounded by the positioning blocks;

[0044] Next, place two battery stack end plates 5 on the top of the stacked battery stack components. Install the second set of positioning blocks to the upper half of the reference upright post 2, so that the lower end of the fixed positioning block 3 abuts against the upper surface of the battery stack end plate 5. The sliding positioning block 4 is at the highest point and locked with the reference upright post 2. Stack the battery stack components in the second positioning space surrounded by the positioning blocks.

[0045] Finally, place the battery stack end plate 5 on the top of the stacked battery stack components, and move the positioning tooling under the press. Loosen the bolts of the fixed positioning block 3, the sliding positioning block 4 of the upper positioning block and the sliding positioning block 4 of the lower positioning block for pressing. During the pressing process, the fixed positioning block 3, the sliding positioning block 4 of the upper positioning block and the sliding positioning block 4 of the lower positioning block slide down as the battery stack is compressed, avoiding interference with the pressing operation.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the protection scope of the present invention: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0047] In addition, it should be noted that the use of words such as "first", "second", etc. to limit the components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings. Therefore, it should not be understood as a limitation on the protection scope of the present invention.

[0048] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery stack assembly positioning tooling, characterized in that It includes a reference base, on which a plurality of reference columns are provided. The reference columns have first positioning surfaces, and the plurality of first positioning surfaces enclose a first positioning space for positioning the end plate of the battery stack; on the first positioning surface of each reference column, a positioning block is installed. The positioning block has a second positioning surface, and the plurality of second positioning surfaces enclose a second positioning space for positioning the plate frame of the battery stack. The positioning block includes a fixed positioning block and a sliding positioning block. The sliding positioning block is slidably installed on the upper side of the fixed positioning block, and the sliding positioning block and the fixed positioning block at least partially coincide in the vertical direction.

2. The battery stack assembly positioning tooling according to claim 1, wherein There are two positioning blocks, and the two positioning blocks are distributed up and down along the reference column.

3. The battery stack assembly positioning tooling according to claim 1, characterized in that, The reference base includes a connecting plate and a support base. A plurality of connecting grooves are formed in the connecting plate, and the support base is installed on the connecting plate and is located at the center of the first positioning space.

4. A battery stack assembly positioning tooling according to claim 3, characterized in that, The connecting groove is a root slot or a dovetail slot.

5. The battery stack assembly positioning tooling according to claim 1, characterized in that, The reference column includes a bottom plate and a column. An oblong connecting hole is formed in the bottom plate; the column is vertically fixed on the bottom plate, and a reinforcing rib is fixed between the bottom plate and the column.

6. The battery stack assembly positioning tooling according to claim 1, characterized in that, A first mounting hole and a second mounting hole are formed in the reference column. The first mounting hole is oblong. The sliding positioning block is connected to the reference column by a bolt passing through the first mounting hole, and the fixed positioning block is connected to the reference column by a bolt passing through the second mounting hole.

7. A battery stack assembly positioning tooling according to claim 6, characterized in that, The second mounting hole is oblong.

8. A battery stack assembly positioning tooling according to claim 1, characterized in that A guide groove is formed at the top of the fixed positioning block, and a guide rail is provided at the lower end of the sliding positioning block. The guide rail is slidably arranged in the guide groove.

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