Battery formation device

Abstract

The utility model belongs to the technical field of battery manufacturing, and discloses a battery formation device which comprises a plurality of extrusion pieces, a bearing piece and a thickness compensation piece, the extrusion pieces are arranged at intervals, a mounting space is defined between every two adjacent extrusion pieces, the bearing piece is used for supporting a battery, and the thickness compensation piece is used for compensating the thickness of the battery. Each thickness compensation piece is movably mounted on the extrusion piece; the thickness compensation part can be inserted into the supporting groove and is arranged corresponding to the thinning area. The battery formation device can compensate the thickness loss caused by the thinning area, ensures that the middle part and the end part of the battery are subjected to the same extrusion force, avoids lithium precipitation in the thinning area, and can adjust the size of the thickness compensation piece inserted into the bearing piece according to the size of the battery and the thinning area, thereby meeting the clamping requirements of batteries of different models, and improving the clamping efficiency. And the device can be compatible with batteries with various dimensions.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a battery formation device. Background Art

[0002] In order to increase the specific surface area of ​​the active material of the electrode sheet, improve the electrochemical performance of the electrode sheet, and increase the energy density and cycle life of the battery, a thinned area is designed at the edge of the electrode sheet. The thickness of the thinned area is designed to be less than the thickness of the main area (generally 5μm-10μm). After the positive electrode sheet, negative electrode sheet, and separator are stacked in a "Z" shape in n layers to form a battery cell, the thinned area of ​​the positive electrode sheet and the thinned area of ​​the negative electrode sheet are superimposed. Compared with the thickness of the main area, the cumulative thickness of the thinned area after superposition is thinner by n×(5-10)μm.

[0003] The formation equipment used in the prior art for the formation of lithium batteries is composed of a pressure plate, a silicone pad and a support paper of uniform thickness. The support paper has an n-type structure and is attached to two oppositely arranged surfaces of the battery cell. The silicone pad is attached to the side of the support paper facing away from the battery cell, and the pressure plate is attached to the side of the silicone pad facing away from the support paper. As mentioned above, since the thickness of the thinned area after superposition will be less than the thickness of the main area, the existing formation equipment will cause uneven force on the main area and the thinned area of ​​the battery cell. The gas generated during the formation of the lithium battery will enter the area of ​​the battery cell that is not under pressure or has low pressure, which will cause the gap between the thinned area of ​​the positive electrode sheet, the thinned area of ​​the negative electrode sheet and the diaphragm to increase, so that during the charging process of the lithium-ion battery, lithium ions cannot be quickly embedded in the negative electrode layer, polarization occurs on the negative electrode surface, and lithium ions are precipitated as lithium monomer on the negative electrode surface, thereby affecting the normal operation of the lithium-ion battery. Utility Model Content

[0004] The utility model aims to provide a battery formation device, which can compensate for the thickness loss caused by the thinning area, ensure that the middle and end parts of the battery are subjected to the same extrusion force, and avoid lithium deposition in the thinning area.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model discloses a battery formation device, wherein the battery has two ends, and each end is provided with a thinning area; the battery formation device comprises: a plurality of extrusion members, the plurality of extrusion members are arranged at intervals, an installation space is defined between two adjacent extrusion members, and each installation space is used to accommodate one battery; a supporting member, the supporting member is used to support the battery; a plurality of thickness compensation members, each of the thickness compensation members can be movably mounted on the extrusion member; the thickness compensation member can be inserted into the supporting member and is arranged corresponding to the thinning area.

[0007] In some embodiments, the supporting member is provided with a supporting groove for supporting the battery; the thickness compensation member has an insertion end inserted into the supporting groove, the insertion end has a stop surface and a compensation surface, the stop surface stops at the side wall of the supporting groove, and the compensation surface is a slope or an arc surface, so that the thickness of the insertion end gradually decreases in the direction of insertion into the supporting groove.

[0008] In some embodiments, each end portion of the battery has the thinned region on both sides along the thickness direction of the battery; wherein:

[0009] Each end portion of the battery is provided with two thickness compensators, and each thickness compensator is provided with an insertion end, and the insertion ends of the two thickness compensators are respectively provided corresponding to the two thinned areas of one end portion; or:

[0010] Each end of the battery corresponds to one thickness compensating member, and the thickness compensating member is provided with a pair of insertion ends, and the two paired insertion ends are respectively arranged corresponding to the two thinned areas of one end.

[0011] In some embodiments, the battery formation device further includes: a fixing seat, which is mounted on the extrusion member; an adjusting member, which is passed through the fixing seat and has one end connected to the thickness compensation member, and the adjusting member can slide relative to the fixing seat to adjust the length of the thickness compensation member inserted into the supporting member.

[0012] In some specific embodiments, a threaded hole is provided on the fixing seat, and the adjusting member includes an adjusting bolt, which is threadedly connected to the threaded hole and is detachably connected to the thickness compensation member; or; a mounting hole and a locking hole connected to the mounting hole are provided on the fixing seat; the adjusting member is passed through the mounting hole, and the locking member is passed through the locking hole and stops at the outer peripheral wall of the adjusting member to lock the adjusting member.

[0013] In some embodiments, the supporting member includes an integrally formed first part, a second part and two fixing parts, the first part and the second part are connected, and a support groove for supporting the battery is defined therebetween, and the two fixing parts are respectively connected to the first part and the second part and fixed to two adjacent extrusion parts.

[0014] In some specific embodiments, there are multiple supporting members; wherein: the multiple supporting members are an integrally formed structure; or: the multiple supporting members are independently arranged, and two adjacent supporting members are partially overlapped and fixed to the extrusion member.

[0015] In some embodiments, the battery formation device further includes a buffer member, which is sandwiched between the extrusion member and the supporting member.

[0016] In some specific embodiments, the buffer is an n-type structure, and each buffer is provided corresponding to one extrusion member, the extrusion member is plugged into the n-type structure, and the side wall of the extrusion member is in contact with the inner side wall of the n-type structure.

[0017] In some embodiments, the battery formation device further includes a track member, and the track member is passed through the plurality of extrusion members.

[0018] The beneficial effects of the battery formation device of the present invention are as follows: in actual operation, after the battery is installed on the support member, the position of the thickness compensating member is adjusted so that it is inserted into the support member and is set corresponding to the thinning area of ​​the battery. Before the formation process begins, the spacing between the two adjacent extrusion members is reduced by an external driving structure, so that the battery and the thickness compensating member are pressed tightly, and then the formation process is started normally. Compared with the existing formation device, the battery formation device of the present invention increases the thickness for compensating for the missing thinning area, ensuring that the middle and end parts of the battery are subjected to the same extrusion force, ensuring that the main area and the thinning area of ​​the battery are subjected to more uniform force, and can better control the fit of the electrode in the thinning area, avoiding the occurrence of a clamping gap in the thinning area, which causes the gas generated during the formation process to enter the gap and thus cause lithium deposition in the thinning area. In addition, the size of the thickness compensating member inserted into the support member can be adjusted according to the size of the battery and the thinning area, so as to meet the clamping needs of batteries of different models and be compatible with batteries of various sizes.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a battery formation device according to a first embodiment of the present invention;

[0021] Figure 2 This is a schematic structural diagram of the battery formation device in another direction according to the first embodiment of the present invention;

[0022] Figure 3 yes Figure 2 The enlarged schematic diagram of the circle A is shown;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the battery formation device according to the first embodiment of the present invention;

[0024] Figure 5 This is a schematic structural diagram of a supporting member according to a first embodiment of the present invention;

[0025] Figure 6 This is a partial structural diagram of a battery formation device according to a second embodiment of the present invention;

[0026] Figure 7 It is a partial structural diagram of a battery formation device according to the third embodiment of the present invention.

[0027] Reference numerals:

[0028] 100, extrusion member; 200, supporting member; 201, supporting groove; 210, first part; 220, second part; 230, fixing portion; 300, thickness compensation member; 310, insertion end; 311, stop surface; 312, compensation surface; 400, fixing seat; 500, adjustment member; 600, locking member; 700, buffer member; 800, track member; 10, battery; 101, thinning area. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0030] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0033] Example 1:

[0034] The utility model discloses a battery formation device, wherein a battery 10 has two ends, each end being provided with a thinning area 101; Figure 1-Figure 3 As shown, the battery formation device includes a plurality of extrusion members 100, a supporting member 200 and a plurality of thickness compensating members 300. The plurality of extrusion members 100 are arranged at intervals, and an installation space is defined between two adjacent extrusion members 100. The supporting member 200 is used to support the battery 10, and each thickness compensating member 300 can be movably mounted on the extrusion member 100; the thickness compensating member 300 can be inserted into the supporting member 200 and is arranged corresponding to the thinning area 101. First of all, it should be noted that the number of extrusion members 100 in this embodiment is three. Of course, in other embodiments of the utility model, the number of extrusion members 100 can be two, or four or more, and the specific selection can be based on actual needs. It is understood that, in actual operation, after the battery 10 is mounted on the support member 200, the position of the thickness compensating member 300 is adjusted so that it is inserted into the support member 200 and is set corresponding to the thinning area 101 of the battery 10. Before the formation process begins, the spacing between the two adjacent extrusion members 100 is reduced by an external driving structure, so that the battery 10 and the thickness compensating member 300 are pressed tightly, and then the formation process is started normally. Compared with the existing formation device, the formation device of this embodiment has increased the thickness for compensating for the missing thickness of the thinning area 101, ensuring that the middle and end parts of the battery 10 are subjected to the same extrusion force, ensuring that the main area of ​​the battery 10 and the thinning area 101 are subjected to a more uniform force, and can better control the fit of the pole pieces in the thinning area 101, avoiding the occurrence of a clamping gap in the thinning area 101, which causes the gas generated during the formation process to enter the gap and thus cause lithium deposition in the thinning area 101. The formation device of this embodiment can also adjust the size of the thickness compensation member 300 inserted into the supporting member 200 according to the size of the battery 10 and the thinning area 101, thereby meeting the clamping needs of batteries 10 of different models, making the battery formation device of this embodiment compatible with batteries 10 of various sizes.

[0035] refer to Figure 3As shown, the supporting member 200 has a supporting groove 201 for supporting the battery 10. It is understandable that by providing the supporting groove 201 on the supporting member 200 to support the battery 10, it is possible to ensure that the larger surface area of ​​the battery 10 is stably clamped between the two oppositely disposed side walls of the supporting groove 201 during the actual clamping process, thereby ensuring the stability of the battery 10 on the battery formation device, which is conducive to ensuring the stable operation of the formation process.

[0036] refer to Figure 3 As shown, the thickness compensating member 300 has an insertion end 310 inserted into the support groove 201, and the insertion end 310 has a stop surface 311 and a compensation surface 312. The stop surface 311 stops at the side wall of the support groove 201, and the compensation surface 312 is an inclined surface or an arc surface, so that the thickness of the insertion end 310 gradually decreases in the direction of insertion into the support groove 201. It can be understood that, referring to Figure 1 As shown, the missing thickness of the thinned area 101 of the battery 10 becomes smaller the closer to the middle of the battery 10. In this embodiment, the thickness of the insertion end 310 of the thickness compensation piece 300 gradually decreases in the direction of insertion into the support groove 201. In this way, after the insertion end 310 is inserted into the support groove 201, the position where the insertion end 310 has a larger thickness corresponds to the position where the thickness missing of the thinned area 101 is larger, and the position where the insertion end 310 has a smaller thickness corresponds to the position where the thickness missing of the thinned area 101 is smaller. This is conducive to ensuring the compensation ability of the thickness compensation piece 300, thereby facilitating the adjustment of the gap during pressing.

[0037] Of course, it should be additionally explained here that, in other embodiments of the present invention, the shape of the thickness compensating member 300 can be designed according to the thickness of the thinned area 101 of the battery 10 and is not limited to the above description.

[0038] Optionally, the thickness compensation member 300 may be made of a material with a certain elasticity, such as polytetrafluoroethylene, Teflon, or silicone, so as to facilitate the realization of the thickness compensation function.

[0039] Optionally, the support member 200 is a support paper. The support paper can better support the battery 10 and is relatively low in cost, which helps reduce the formation cost. Of course, in other embodiments of the present invention, the material of the support member 200 can be adjusted according to actual needs and is not limited to support paper.

[0040] Each end of the battery 10 has a thinned area 101 on both sides along the thickness direction of the battery 10; Figure 3As shown, two thickness compensators 300 are provided at each end, and each thickness compensator 300 has an insertion end 310. The insertion ends 310 of the two thickness compensators 300 are respectively provided corresponding to the two thinned areas 101 of one end. It can be understood that since each end has a thinned area 101 on both sides along the thickness direction of the battery 10, the two thinned areas 101 corresponding to the two thickness compensators 300 are provided. Under the compensating effect of the two thickness compensators 300, it is possible to ensure that the middle and end portions of the battery 10 are subjected to the same pressure, thereby better controlling the electrode adhesion of the thinned areas 101 and preventing lithium deposition in the thinned areas 101.

[0041] refer to Figure 3-Figure 4 As shown, the battery formation device further includes a fixing seat 400 and an adjusting member 500. The fixing seat 400 is mounted on the extrusion member 100. The adjusting member 500 is passed through the fixing seat 400, and one end of the adjusting member 500 passing through the fixing seat 400 is connected to the thickness compensating member 300. The adjusting member 500 can slide relative to the fixing seat 400 to adjust the length of the thickness compensating member 300 inserted into the support groove 201. It is understandable that during the actual process, the position of the thickness compensating member 300 can be adjusted by the adjusting member 500, thereby adjusting the length of the thickness compensating member 300 inserted into the support groove 201, which can ensure that the thickness compensating member 300 can accurately compensate for the missing thickness of the thinned area 101, thereby ensuring that the entire battery 10 is subjected to a relatively uniform force. It should be noted that since both ends of the battery 10 are provided with thinned areas 101, the extrusion 100 is provided with a pair of fixing seats 400. In order to avoid the fixing seats 400 from contacting the battery 10 and causing unnecessary interference, when the battery 10 is clamped between the two extrusions 100, the two fixing seats 400 should not contact the battery 10, that is, the distance between the two fixing seats 400 should be greater than the length of the battery 10, and greater than the dimension of the supporting member 200 along the length direction of the battery 10.

[0042] Furthermore, since the fixing base 400 is connected to the extrusion piece 100, during the actual extrusion of the battery 10, the distance between the two extrusion pieces 100 will become smaller to ensure stable extrusion of the battery 10. To prevent the fixing base 400 from being too thick, which would cause the fixing bases 400 on the two extrusion pieces 100 to contact each other during the extrusion of the battery 10, the thickness of the fixing base 400 should be less than half the thickness of the battery 10. In this way, when the two extrusion pieces 100 are stably extruding the battery 10, there is still a gap between the fixing bases 400 on the two extrusion pieces 100.

[0043] Optionally, the fixing base 400 can be mounted on the extrusion 100 by means of screws, fixing pins or other connectors, or can be fixed to the extrusion 100 by welding, bonding or other methods. The fixing base 400 can also be formed as an integral part with the extrusion 100 during the manufacturing process. Optionally, a positioning groove can be provided on the extrusion 100, and the fixing base 400 is installed in the positioning groove. This can facilitate the accurate and stable installation of the fixing base 400 on the extrusion 100, which is conducive to improving the connection stability of the fixing base 400.

[0044] A threaded hole is provided on the fixing base 400, and the adjusting member 500 includes an adjusting bolt, which is threadedly connected to the threaded hole and is detachably connected to the thickness compensating member 300. It is understandable that in actual operation, the operator only needs to turn the adjusting bolt to adjust the length of the thickness compensating member 300 inserted into the support groove 201, thereby achieving precise thickness compensation of the thickness compensating member 300. It should be noted that in this embodiment, a socket or connecting hole is provided on the thickness compensating member 300, and the adjusting bolt passes through one end of the fixing base 400 and is inserted into the socket or is threadedly connected to the connecting hole. In addition, the thickness compensating member 300 is detachably connected to the adjusting bolt. In actual operation, different thickness compensating members 300 can be replaced according to different battery 10 models, so that the battery formation device of this embodiment can adapt to the formation of different models of batteries 10.

[0045] Optionally, there are multiple adjusting members 500. It is understandable that when the width of the battery 10 is large, the corresponding dimension of the thickness compensating member 300 along the width direction of the battery 10 is also relatively small. A single adjusting member 500 may cause the thickness compensating member 300 to be unevenly stressed and skewed, thereby reducing the compensation effect of the thickness compensating member 300. Providing multiple adjusting members 500 can prevent the thickness compensating member 300 from being unevenly stressed or losing balance, ensuring that the thickness compensating member 300 can stably compensate for the exact thickness of the thinned area 101, thereby ensuring that the battery 10 is evenly stressed.

[0046] Optionally, the fixing seat 400 is made of a hard material, such as steel or cast iron, to ensure the connection stability of the adjusting member 500 .

[0047] Of course, it should be noted that in other embodiments of the present invention, the battery formation device may not be provided with a fixing seat 400 and an adjusting member 500. Instead, a slide groove extending along the length of the battery 10 is provided on the extrusion member 100, and the thickness compensating member 300 is fitted into the slide groove. During the actual assembly process, the operator can usually achieve the compensation function of the thickness compensating member 300 by manually sliding the thickness compensating member 300 into the support groove 201.

[0048] refer to Figure 5As shown, the support member 200 includes an integrally formed first portion 210, a second portion 220, and two fixing portions 230. The first portion 210 and the second portion 220 are connected, and a support groove 201 is defined therebetween. The two fixing portions 230 are respectively connected to the first portion 210 and the second portion 220 and fixed to two adjacent extrusion members 100. It can be understood that the support member 200 is formed into a U-shaped structure, supporting the battery 10 via the first portion 210 and the second portion 220. On the one hand, this ensures the stability of the battery 10. On the other hand, during the formation process of the battery 10, the side walls of the first portion 210 and the second portion 220 facing each other stop against the two opposite side walls of the battery 10, preventing the extrusion member 100 from directly contacting the battery 10 and thus protecting the battery 10. It should be noted that the connection method between the fixing part 230 and the extrusion part 100 can be adjusted according to actual needs. The fixing part 230 can be directly bonded to the top wall of the extrusion part 100, or it can be fixed to the extrusion part 100 by fixing parts such as screws. The specific selection can be made according to actual needs.

[0049] Optionally, there are multiple installation spaces (two in the present embodiment, and in other embodiments of the present invention, the number of installation spaces can be selected according to actual needs), and each installation space is correspondingly provided with a supporting member 200. Specifically, there can be multiple supporting members 200, and multiple supporting members 200 are one-piece molding structures, which reduces the number of parts of the entire battery formation device, facilitates the assembly of the battery formation device, and is conducive to improving the formation efficiency. Further optionally, two adjacent supporting members 200 share a fixing portion 230. It is understandable that two adjacent supporting members 200 share a fixing portion 230, which simplifies the structure of the supporting member 200 and is conducive to reducing the manufacturing cost of the battery formation device.

[0050] refer to Figure 4 As shown, the battery formation device also includes a buffer member 700, which is sandwiched between the extrusion member 100 and the support member 200. It is understood that the additional buffer member 700 can prevent direct contact between the extrusion member 100 and the battery 10, and is used to buffer the hard forces applied to the battery 10, balance the forces applied to the battery 10, and maintain the good appearance of the battery 10. Optionally, the buffer member 700 is a silicone pad. Of course, in other embodiments of the present invention, the buffer member 700 can also be made of other materials according to actual needs, and is not limited to the silicone of this embodiment.

[0051] Optionally, the buffer 700 has an n-type structure, and each buffer 700 is provided corresponding to an extrusion 100. The extrusion 100 is plugged into the n-type structure, and the sidewalls of the extrusion 100 are in contact with the inner sidewalls of the n-type structure. It is understood that the buffer 700 has an n-type structure. When the buffer 700 is installed on the extrusion 100, the two opposite sidewalls and the top wall of the extrusion 100 are covered with the buffer 700. After the support member 200 is installed, all walls of the support member 200 are stopped against the buffer 700, avoiding direct contact between the support member 200 and the buffer 700, thereby protecting the support member 200. The connection method between the buffer 700 and the extrusion 100 can be selected according to actual needs. For example, the buffer 700 can be directly bonded to the extrusion 100, or the portion of the buffer 700 in contact with the top wall of the extrusion 100 can be locked using a connector such as a screw.

[0052] refer to Figure 1 As shown, the battery formation device also includes a track member 800, which is provided in a plurality of extrusion members 100. It is understandable that the track member 800 is provided in a plurality of extrusion members 100. Before the formation process begins, an external driving structure (such as a cylinder or an electric push rod) can be used to push an extrusion member 100 to move along the track member 800, thereby pushing a plurality of extrusion members 100 to move along the extension direction of the track member 800, so that two adjacent extrusion members 100 can stably clamp a battery 10. Optionally, the track members 800 are arranged in pairs, and the two track members 800 arranged in pairs are located at both ends of the extrusion member 100 along its length direction, and the supporting member 200 and the battery 10 are both located between the two track members 800. The movement of the track member 800 can be better guided by the two track members 800.

[0053] Example 2:

[0054] The battery formation device of this embodiment is substantially the same as that of the first embodiment, except that the connection method of the fixing base 400 and the adjusting member 500 is different. Figure 6 As shown, the fixing seat 400 is provided with a mounting hole and a locking hole connected to the mounting hole; the adjusting member 500 is passed through the mounting hole and is connected to the thickness compensation member 300, and the locking member 600 is passed through the locking hole and stops at the outer wall of the adjusting member 500 to lock the adjusting member 500.

[0055] Example 3:

[0056] The battery formation device of this embodiment is substantially the same as that of the first embodiment, except that the structure of the thickness compensation member 300 is different. Figure 7As shown, each end corresponds to a thickness compensating member 300 , and the thickness compensating member 300 is provided with a pair of inserting ends 310 , and the two inserting ends 310 arranged in a pair are respectively arranged corresponding to the two thinning areas 101 of one end.

[0057] Example 4:

[0058] The battery formation device of this embodiment is substantially the same as that of embodiment 1, except that the multiple supporting members 200 in this embodiment are independently arranged, each supporting member 200 is arranged corresponding to an installation space, and the fixing portions 230 of two adjacent supporting members 200 are at least partially overlapped and fixed on the extrusion member 100.

[0059] Throughout this specification, references to "some embodiments," "other embodiments," and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0060] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery formation device, characterized in that: The battery (10) is provided with thinning areas (101) at both ends along its length direction; the battery formation device comprises: A plurality of extrusion members (100), wherein the plurality of extrusion members (100) are arranged at intervals, and an installation space is defined between two adjacent extrusion members (100), and each installation space is used to accommodate one battery (10); a supporting member (200), the supporting member (200) being used to support the battery (10); A plurality of thickness compensating members (300), each of the thickness compensating members (300) is movably mounted on the extrusion member (100); the thickness compensating member (300) can be inserted into the supporting member (200) and is arranged corresponding to the thinning area (101).

2. The battery formation device according to claim 1, characterized in that The supporting member (200) has a supporting groove (201) for supporting the battery (10); The thickness compensation piece (300) has an insertion end (310) inserted into the support groove (201), and the insertion end (310) has a stop surface (311) and a compensation surface (312), wherein the stop surface (311) stops at the side wall of the support groove (201), and the compensation surface (312) is an inclined surface or an arc surface, so that the thickness of the insertion end (310) gradually decreases in the direction of insertion into the support groove (201).

3. The battery formation device according to claim 1 or 2, characterized in that: Each end portion of the battery has the thinned region (101) on both sides along the thickness direction of the battery (10); wherein: Each end portion of the battery is provided with two thickness compensating members (300), and each thickness compensating member (300) is provided with an insertion end (310), and the insertion ends (310) of the two thickness compensating members (300) are provided corresponding to the two thinned areas (101) of one end portion; or: Each end of the battery corresponds to a thickness compensating member (300), and the thickness compensating member (300) is provided with a pair of insertion ends (310), and the two paired insertion ends (310) are respectively provided corresponding to the two thinned areas (101) of one end.

4. The battery formation device according to claim 1, characterized in that The battery formation device also includes: a fixing seat (400), the fixing seat (400) being mounted on the extrusion member (100); An adjusting member (500) is provided on the fixing seat (400), and one end of the adjusting member (500) is connected to the thickness compensation member (300). The adjusting member (500) can slide relative to the fixing seat (400) to adjust the length of the thickness compensation member (300) inserted into the supporting member (200).

5. The battery formation device according to claim 4, characterized in that: The fixing seat (400) is provided with a threaded hole, the adjusting member (500) comprises an adjusting bolt, the adjusting bolt is threadedly connected to the threaded hole and is detachably connected to the thickness compensation member (300); or; The fixing seat (400) is provided with a mounting hole and a locking hole connected to the mounting hole; the adjusting member (500) is passed through the mounting hole, and the locking member (600) is passed through the locking hole and abuts against the outer peripheral wall of the adjusting member (500) to lock the adjusting member (500).

6. The battery formation device according to claim 1, characterized in that: The supporting member (200) comprises an integrally formed first portion (210), a second portion (220) and two fixing portions (230); the first portion (210) and the second portion (220) are connected to each other and define a supporting groove (201) for supporting the battery (10); the two fixing portions (230) are respectively connected to the first portion (210) and the second portion (220) and fixed to two adjacent extrusion members (100).

7. The battery formation device according to claim 1, characterized in that: There are multiple supporting members (200); wherein: The plurality of supporting members (200) are an integrally formed structure; or: The plurality of supporting members (200) are independently arranged, and two adjacent supporting members (200) are partially overlapped and fixed to the extrusion member (100).

8. The battery formation device according to claim 1, characterized in that: The battery formation device further comprises a buffer component (700), wherein the buffer component (700) is sandwiched between the extrusion component (100) and the supporting component (200).

9. The battery formation device according to claim 8, characterized in that: The buffer (700) is an n-type structure, and each buffer (700) is provided corresponding to one extrusion piece (100). The extrusion piece (100) is plugged into the n-type structure, and the side wall of the extrusion piece (100) is attached to the inner side wall of the n-type structure.

10. The battery formation device according to claim 1, characterized in that: The battery formation device further comprises a track member (800), wherein the track member (800) is passed through the plurality of extrusion members (100).

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