A device for verifying a module of a battery box cover

Abstract

The utility model belongs to battery technical field, propose a kind of module verification power battery box cover's device, comprising: two support lower end surface two ends respectively link the upper end surface of first clamping plate and second clamping plate, the upper end surface of first clamping plate and second clamping plate is below the upper end surface height of electric core module, the upper end surface of support is used to carry flat plate and higher than the upper end surface of electric core module predetermined interval;Two connecting pole piece one end respectively with the output electrode of one electric core module and the input electrode of another electric core module form welding, the both ends of transverse connecting piece detachably connect the other end of two connecting pole piece.The module verification power battery box cover's device of the utility model, realize the position limitation of two electric core modules;Through flat plate instead of battery pack's box cover to test, and in the module level test experiment of external high-voltage equipment, through transverse connecting piece, avoid the damage of electric core module and connecting pole piece due to the disassembly of connecting pole piece.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and specifically relates to a device for verifying the cover of a power battery box in a module. Background Technology

[0002] In the design and cost reduction process of power batteries, it is an indispensable step to conduct experimental verification of the material and thickness of the battery box cover. However, verification using the entire battery pack is difficult to implement in practice due to the high material and time costs.

[0003] To address the aforementioned issues, existing technologies employ module-level testing using external high-voltage equipment. This involves using external high-voltage equipment to charge the modules, simulating a battery pack, and then fixing a cover plate on top of the modules for testing. However, this approach still faces challenges: since the modules are independent products before use and do not form a complete circuit, charging the internal cells of the modules, which lack a series circuit, remains a challenge for the industry. Currently, there are two common solutions: one is to charge the upper and lower modules separately in two stages, but this method cannot guarantee the consistency of voltage across all cells within the module; the other is to directly weld connecting plates at the break point. While this can temporarily solve the problem, removing the connecting plates during later testing may damage the cells.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0005] To address the aforementioned issues, this utility model proposes a device for verifying the cover of a power battery box using a module, comprising: a first clamping plate, a second clamping plate, a bracket, a connecting electrode plate, a transverse connecting plate, and a flat plate; The first and second clamps are arranged in parallel and spaced apart. The two ends of the lower end face of the two brackets are respectively connected to the upper end face of the first and second clamps. The upper end face of the first and second clamps is lower than the height of the upper end face of the battery cell module. The upper end face of the bracket is used to support the flat plate and is higher than the upper end face of the battery cell module by a predetermined distance. One end of each of the two connecting electrodes is welded to the output electrode of one battery cell module and the input electrode of another battery cell module, respectively. The two ends of the transverse connecting piece are detachably connected to the other ends of the two connecting electrodes.

[0006] Furthermore, a storage space for accommodating two battery cell modules is formed between the first and second clamping plates. The ends of the two connecting electrodes that are welded to the battery cell modules are located within the storage space, and the other ends of the two connecting electrodes that are detachably connected to the transverse connecting pieces extend out of the storage space.

[0007] Furthermore, the width of the end of the connecting electrode that connects to the transverse connecting piece is smaller than the width of the end of the connecting electrode that connects to the cell module. The two connecting electrodes are arranged symmetrically, and a positioning cavity is formed between the two connecting electrodes and the transverse connecting piece.

[0008] Furthermore, the battery cell module includes several battery cells and several electrode plates, and each of the battery cells is provided with an explosion-proof valve on its upper surface. The feature is that it also includes an electrode tray, which covers the upper surface of two battery cell modules. The side wall of the electrode tray is provided with several first through holes for connecting the electrode plates, and the side wall of the electrode tray is provided with several second through holes corresponding to the explosion-proof valves.

[0009] Furthermore, the upper surfaces of the two connecting electrodes are fitted with the lower surfaces of the transverse connecting plates, and the sidewall of the electrode tray is connected to the positioning plate body, with the upper surface of the positioning plate body fitting with the lower surfaces of the two connecting electrodes.

[0010] Furthermore, both ends of the transverse connecting piece are connected to the two connecting pole pieces by bolts, and the positioning plate body is provided with several threaded limiting holes that are compatible with the bolts.

[0011] Furthermore, it also includes a first positioning end block and a second positioning end block with the same thickness as the bracket. The positioning plate body has a third through hole corresponding to the positioning cavity. The inner walls of the positioning cavity and the third through hole are sleeved with the outer wall of the first positioning end block. The two ends of the first positioning end block are respectively connected to the lower end face of the flat plate and the upper end face of the first clamping plate. The two ends of the second positioning end block are respectively connected to the lower end face of the flat plate and the upper end face of the second clamping plate.

[0012] Furthermore, the electrode plate includes connecting electrode sheets and end electrode sheets. The side wall of the electrode tray is connected to the input positioning block and the output positioning block. The input positioning block and the output positioning block are respectively connected to the end electrode sheets of the two battery cell modules. The connecting electrode sheets are respectively sleeved in the first through holes.

[0013] Furthermore, it also includes several connecting rods, with both ends of the connecting rods penetrating the side walls of the first clamping plate and the second clamping plate, respectively.

[0014] Furthermore, the support has several threaded holes arranged in an array along its axis, and the plate is connected to the support by bolts.

[0015] Compared with the prior art, the embodiments of this utility model have at least the following advantages: 1. The device for verifying the power battery box cover of this utility model forms a storage space for accommodating two battery cell modules through a first clamping plate and a second clamping plate. The upper surfaces of the first and second clamping plates are lower than the upper surfaces of the battery cell modules, while the upper surface of the bracket is higher than the upper surfaces of the battery cell modules by a predetermined height, thus defining the position of the two battery cell modules. Testing is conducted using a flat plate instead of the battery pack cover. The upper surface of the bracket supports the flat plate, further adjusting the distance between the lower surface of the flat plate and the upper surfaces of the two battery cell modules. This ensures that the distance between the flat plate and the battery cell modules is consistent with the design clearance between the explosion-proof valve and the cover within the battery pack, achieving precise control of the distance between the flat plate and the battery cell modules and improving the accuracy of evaluating the battery box cover's performance.

[0016] 2. In the module-level test experiment of the external high-voltage equipment, based on the welding of two connecting plates to two cell modules respectively, the two cell modules are connected in series by the installed transverse connecting plate to form a complete circuit. This ensures the consistency of the cell voltage inside the module during the module charging process, thereby meeting the test requirements. After the module is charged, the two cell modules are separated by removing the transverse connecting plate, avoiding damage to the cell module and connecting plate caused by removing the connecting plate, and improving the efficiency of removing the connecting plate.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the device for verifying the power battery box cover in an embodiment of this utility model is shown; Figure 2 This invention provides an internal schematic diagram of the device for verifying the power battery box cover in an embodiment of the present invention. Figure 3 A cross-sectional schematic diagram of the device for verifying the power battery box cover in an embodiment of this utility model is shown; Figure 4 A schematic diagram of the electrode tray in an embodiment of this utility model is shown.

[0020] In the figure, there are battery module 1', battery cell 101', electrode plate 102', and explosion-proof valve 103'. First clamping plate 1, second clamping plate 2, bracket 3, threaded hole 301, connecting electrode 4, transverse connecting piece 5, electrode tray 6, first through hole 601, second through hole 602, positioning plate body 603, third through hole 604, input positioning block 605, output positioning block 606, first positioning end block 7, second positioning end block 8, connecting rod 9, plate 10. Detailed Implementation

[0021] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be further noted that the present invention provides a device for verifying the power battery box cover of the module for assembling two battery cell modules 1' for testing, and making the two battery cell modules 1' form a series connection.

[0024] The battery module 1' includes several battery cells 101' and several electrode plates 102'. Correspondingly, the electrode plate 102' includes connecting electrode sheets and end electrode sheets. The several battery cells 101' are arranged in an array, and the electrodes on the upper surfaces of adjacent battery cells 101' are connected in series through the two ends of the electrode plate 102'. The electrode of the battery module 1' connected to the external power supply is connected to one end of the end electrode sheet. The several connecting electrode sheets are respectively sleeved in several first through holes 601. In addition, the upper surfaces of several battery cells 101' are provided with explosion-proof valves 103'.

[0025] This utility model provides a device for verifying the cover of a power battery box in a module. Figure 1 A schematic diagram of a device for verifying the power battery box cover in an embodiment of this utility model is shown. (Refer to...) Figure 1 , Figure 2 and Figure 3 The device for verifying the power battery box cover of the module includes: a first clamping plate 1, a second clamping plate 2, a bracket 3, a connecting electrode plate 4, a transverse connecting plate 5, and a flat plate 10; The first clamping plate 1 and the second clamping plate 2 are arranged in parallel intervals. The two ends of the lower end face of the two brackets 3 are respectively connected to the upper end face of the first clamping plate 1 and the second clamping plate 2. The two brackets 3 are arranged perpendicular to the first clamping plate 1 and the second clamping plate 2. The upper end face of the first clamping plate 1 and the second clamping plate 2 is lower than the height of the upper end face of the battery cell module 1'. The upper end face of the bracket 3 is used to support the flat plate 10 and is higher than the upper end face of the battery cell module 1' by a predetermined distance. One end of each of the two connecting electrodes 4 is welded to the output electrode of one battery cell module 1' and the input electrode of the other battery cell module 1', respectively. The two ends of the transverse connecting piece 5 are detachably connected to the other ends of the two connecting electrodes 4.

[0026] The device for verifying the power battery box cover of this utility model forms a storage space for accommodating two battery cell modules 1' through a first clamping plate 1 and a second clamping plate 2. The upper surfaces of the first clamping plate 1 and the second clamping plate 2 are lower than the upper surface of the battery cell module 1', and the upper surface of the bracket 3 is higher than the upper surface of the battery cell module 1' by a predetermined height, thus defining the position of the two battery cell modules 1'. Testing is conducted using a flat plate 10 instead of the battery pack cover. The upper surface of the bracket 3 supports the flat plate 10, further adjusting the distance between the lower surface of the flat plate 10 and the upper surfaces of the two battery cell modules 1'. This ensures that the distance between the flat plate 10 and the battery cell modules 1' is consistent with the design clearance between the explosion-proof valve and the cover inside the battery pack, achieving precise control of the distance between the flat plate 10 and the battery cell modules 1' and improving the accuracy of evaluating the battery box cover performance.

[0027] Meanwhile, in the module-level test experiment of the external high-voltage equipment, based on the welding of two connecting plates 4 to two cell modules 1' respectively, the two cell modules 1' are connected in series by the installed transverse connecting plate 5, thus forming a complete circuit. This ensures the consistency of the cell voltage inside the module during the module charging process, thereby meeting the test requirements. After the module is charged, the two cell modules 1' are separated by removing the transverse connecting plate 5, avoiding damage to the cell module 1' and connecting plate 4 caused by removing the connecting plate 4, and improving the efficiency of removing the connecting plate 4.

[0028] It should be noted that the material of the tablet 10 can be changed according to actual testing requirements, and is not limited here. Materials such as metal, plastic, and composite materials are used. For strength testing, metal is selected; for corrosion resistance testing, plastic or composite materials are selected. Furthermore, the size and thickness of the tablet 10 are designed to match the actual battery box cover to ensure the accuracy of test results, improve testing flexibility and adaptability, and enable the test to more realistically simulate actual working conditions, thereby improving the accuracy of the test results.

[0029] Furthermore, replacing the battery pack with a different tablet 10 and a bracket 3 of different heights also reduces material and labor costs during the testing process.

[0030] In this case, Figure 2 In the example shown, a storage space is formed between the first clamping plate 1 and the second clamping plate 2 to accommodate two battery cell modules 1'. The ends of the two connecting plates 4 that are welded to the battery cell modules 1' are both located within the storage space. The other ends of the two connecting plates 4 that are detachably connected to the transverse connecting pieces 5 extend out of the storage space to facilitate the disassembly and installation of the transverse connecting pieces 5.

[0031] Furthermore, the width of one end of the connecting electrode 4 that connects to the transverse connecting piece 5 is smaller than the width of the end of the connecting electrode 4 that connects to the cell module 1'. Figure 2 In the example shown, the cross-section of the connecting electrode 4 adopts an L-shaped structure; the two connecting electrodes 4 are arranged symmetrically, and a positioning cavity is formed between the two connecting electrodes 4 and the transverse connecting piece 5, thereby reducing material costs.

[0032] Although the above description uses an L-shaped connecting electrode 4 as an example, this invention is not limited to this. The connecting electrode 4 can adopt various structural forms, such as a T-shape. Those skilled in the art can comprehensively consider the connection principle of this invention and the actual application situation, as long as the principle of this invention can be achieved.

[0033] In this case, reference Figure 4 It also includes an electrode tray 6, which covers the upper surface of the two battery cell modules 1'. The side wall of the electrode tray 6 has several first through holes 601 for connecting the electrode plates 102', and the side wall of the electrode tray 6 has several second through holes 602 corresponding to several explosion-proof valves 103'. The electrode tray 6 achieves secondary fixation of the two battery cell modules 1', further improving the integrity of the two battery cell modules 1', and thus improving the stability of the two battery cell modules 1' between the first clamping plate 1 and the second clamping plate 2.

[0034] Correspondingly, the upper end surfaces of the two connecting electrode plates 4 are in contact with the lower end surfaces of the transverse connecting piece 5. The side wall of the electrode tray 6 is connected to the positioning plate body 603, and the upper end surface of the positioning plate body 603 is in contact with the lower end surfaces of the two connecting electrode plates 4. The positioning plate body 603 supports the two connecting electrode plates 4 and the transverse connecting piece 5, thereby improving the convenience of disassembling and installing the transverse connecting piece 5.

[0035] Meanwhile, both ends of the transverse connecting piece 5 are connected to the two connecting electrodes 4 by bolts. The positioning plate body 603 has threaded limiting holes at both ends of the transverse connecting piece 5. During the bolt installation process, the bolt threads are rotated to connect the threaded limiting holes, thereby realizing the connection between the transverse connecting piece 5, the two connecting electrodes 4 and the electrode tray 6, further improving the overall integrity of the device.

[0036] In addition, refer to Figure 2 It also includes a first positioning end block 7 and a second positioning end block 8 with the same thickness as the bracket 3. The positioning plate body 603 has a third through hole 604 corresponding to the positioning cavity. The inner walls of the positioning cavity and the third through hole 604 are sleeved with the outer wall of the first positioning end block 7. The two ends of the first positioning end block 7 are respectively connected to the lower end face of the plate 10 and the upper end face of the first clamping plate 1. The two ends of the second positioning end block 8 are respectively connected to the lower end face of the plate 10 and the upper end face of the second clamping plate 2. Through the positioning cavity, the third through hole 604, the first positioning end block 7 and the second positioning end block 8, the stability of the connection between the electrode tray 6, the cell module 1' and the first clamping plate 1 and the second clamping plate 2 is further improved.

[0037] Meanwhile, the side wall of the electrode tray 6 is connected to the input positioning block 605 and the output positioning block 606. The input positioning block 605 and the output positioning block 606 respectively overlap with the end electrode pieces of the two cell modules 1'. Combined with the positioning plate 603, the electrode tray 6 and the cell module 1' are fixed at three points, and a fixed position is provided for the end electrode pieces, which facilitates the access of external wires.

[0038] In this embodiment, a plurality of connecting rods 9 are also included. The two ends of the connecting rods 9 pass through the side walls of the first clamping plate 1 and the second clamping plate 2 respectively, and the two ends of the connecting rods 9 are slidably connected to the first clamping plate 1 and the second clamping plate 2 respectively. While realizing the connection between the first clamping plate 1 and the second clamping plate 2, it is convenient to assemble and disassemble the first clamping plate 1 and the second clamping plate 2.

[0039] In this case, the bracket 3 has a plurality of threaded holes 301 arranged in an array along the axis. The plate 10 is connected to the bracket 3 by bolts, so as to facilitate the replacement of the plate 10 in the future and improve the flexibility of the device.

[0040] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or connections that allow for communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of multiple components or the interaction between multiple components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] It should be understood that all terms used to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation of the present invention.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for verifying the cover of a power battery module, used for assembling a battery cell module (1') for testing, characterized in that, include: First clamping plate (1), second clamping plate (2), bracket (3), connecting electrode (4), transverse connecting plate (5) and plate (10); The first clamping plate (1) and the second clamping plate (2) are arranged in parallel intervals. The two ends of the lower end face of the two brackets (3) are respectively connected to the upper end face of the first clamping plate (1) and the second clamping plate (2). The upper end face of the first clamping plate (1) and the second clamping plate (2) is lower than the height of the upper end face of the battery cell module (1'). The upper end face of the bracket (3) is used to support the flat plate (10) and is higher than the predetermined distance of the upper end face of the battery cell module (1'). One end of each of the two connecting electrodes (4) is welded to the output electrode of one battery cell module (1') and the input electrode of another battery cell module (1'), respectively. The two ends of the transverse connecting piece (5) are detachably connected to the other ends of the two connecting electrodes (4).

2. The device for verifying the power battery box cover according to claim 1, characterized in that, The first clamping plate (1) and the second clamping plate (2) form a storage space for accommodating two battery cell modules (1'). The ends of the two connecting plates (4) that are welded to the battery cell modules (1') are located in the storage space. The other ends of the two connecting plates (4) that are detachably connected to the transverse connecting piece (5) extend out of the storage space.

3. The device for verifying the power battery box cover according to claim 2, characterized in that, The width of the end of the connecting electrode (4) that connects to the transverse connecting piece (5) is smaller than the width of the end of the connecting electrode (4) that connects to the cell module (1'). The two connecting electrodes (4) are arranged symmetrically, and a positioning cavity is formed between the two connecting electrodes (4) and the transverse connecting piece (5).

4. The device for verifying the power battery box cover according to claim 3, wherein the cell module (1') comprises a plurality of cells (101') and a plurality of electrode plates (102'), and each of the plurality of cells (101') is provided with an explosion-proof valve (103') on its upper end face, characterized in that, It also includes an electrode tray (6), which covers the upper surface of the two battery cell modules (1'). The side wall of the electrode tray (6) is provided with a number of first through holes (601) for connecting electrode plates (102'), and the side wall of the electrode tray (6) is provided with a number of second through holes (602) corresponding to a number of explosion-proof valves (103').

5. The device for verifying the power battery box cover according to claim 4, characterized in that, The upper surfaces of the two connecting electrodes (4) are in contact with the lower surfaces of the transverse connecting piece (5). The side wall of the electrode tray (6) is connected to the positioning plate body (603), and the upper surface of the positioning plate body (603) is in contact with the lower surfaces of the two connecting electrodes (4).

6. The device for verifying the power battery box cover according to claim 4, characterized in that, The transverse connecting piece (5) is connected to the two connecting pole pieces (4) by bolts at both ends, and the positioning plate body (603) is provided with several threaded limiting holes that are compatible with the bolts.

7. The device for verifying the power battery box cover according to claim 5, characterized in that, It also includes a first positioning end block (7) and a second positioning end block (8) with the same thickness as the bracket (3). The positioning plate body (603) has a third through hole (604) corresponding to the positioning cavity. The inner walls of the positioning cavity and the third through hole (604) are sleeved with the outer wall of the first positioning end block (7). The two ends of the first positioning end block (7) are respectively connected to the lower end face of the plate (10) and the upper end face of the first clamping plate (1). The two ends of the second positioning end block (8) are respectively connected to the lower end face of the plate (10) and the upper end face of the second clamping plate (2).

8. The apparatus for verifying the power battery box cover according to claim 7, wherein the electrode plate (102') comprises a connecting electrode sheet and an end electrode sheet, characterized in that, The sidewall of the electrode tray (6) is connected to the input positioning block (605) and the output positioning block (606). The input positioning block (605) and the output positioning block (606) respectively overlap with the end electrode plates of the two battery cell modules (1'). A plurality of the connecting electrode plates are respectively sleeved in a plurality of first through holes (601).

9. The device for verifying the power battery box cover according to any one of claims 1-8 further includes a plurality of connecting rods (9), the two ends of which pass through the side walls of the first clamping plate (1) and the second clamping plate (2), respectively.

10. The device for verifying the power battery box cover according to claim 8, wherein the bracket (3) is provided with a plurality of threaded holes (301) arranged in an array along the axial direction, and the plate (10) is connected to the bracket (3) by bolts.

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