Positioning tool for assisting in positioning bonding area of flaky carbon material

Abstract

According to the positioning tool used for assisting in positioning the bonding area of the sheet-shaped carbon material, the preset station matched with the sheet-shaped carbon material in shape and size is arranged on the bearing piece, and after the second positioning structures on the positioning piece are aligned with the corresponding first positioning structures on the bearing piece, the sheet-shaped carbon material is positioned on the preset station; the positioning piece is locked and connected to the bearing piece through the locking piece, so that the sheet-shaped carbon material can be stably positioned in the preset station on the bearing piece. Due to the fact that the projection area of the positioning piece on the sheet-shaped carbon material is smaller than the area of the sheet-shaped carbon material, the non-bonding area and the bonding area of the sheet-shaped carbon material can be positioned and identified through the projection of the positioning piece or the first positioning plate on the sheet-shaped carbon material. According to the utility model, when the electric pile is assembled, the bonding area and the non-bonding area on the sheet-shaped carbon material can be efficiently and accurately positioned and identified in the process of bonding and prefabricating the current collecting frame and the sheet-shaped carbon material by adopting a bonding agent as an intermediate material.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of energy storage battery, especially, relate to a kind of positioning tool for assisting the positioning of sheet carbon material bonding area. BACKGROUND

[0002] Flow battery as a new type of battery technology, with high efficiency, safe and reliable, long cycle life, structural design flexibility and other advantages has obtained extensive attention. At present, flow battery mostly adopts single multilayer structure, and the single multilayer structure mainly includes positive material, negative material, bipolar plate, diaphragm, positive current collecting frame and negative current collecting frame, etc., involves bipolar plate, graphite felt and other sheet carbon materials. In the process of assembling flow battery, the current collecting frame of non-metallic material and sheet carbon material (such as bipolar plate) generally need to be connected with each other, in order to not only ensure the shape and position requirements of the two materials after prefabrication, but also meet the uniformity and sealing of the thickness of the intermediate ultrathin connecting material, usually need to use adhesive as intermediate material to bond and prefabricate the current collecting frame and sheet carbon material. In the process of bonding and prefabricating the current collecting frame and sheet carbon material by using adhesive as intermediate material, it is difficult to efficiently and accurately position and mark the bonding area and non-bonding area on the sheet carbon material, which not only reduces the efficiency of bonding and prefabricating the current collecting frame and sheet carbon material, but also affects the quality of bonding and prefabricating the current collecting frame and sheet carbon material. SUMMARY

[0003] Based on the above problems existing in the prior art, the utility model aims at providing a positioning tool for assisting the positioning of sheet carbon material bonding area, to solve the problem that in the process of bonding and prefabricating the current collecting frame and sheet carbon material by using adhesive as intermediate material, it is difficult to efficiently and accurately position and mark the bonding area and non-bonding area on the sheet carbon material.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of: providing a positioning tool for assisting the positioning of sheet carbon material bonding area, comprising:

[0005] A bearing part is provided with a preset station capable of limiting the placement position of sheet carbon material;

[0006] A positioning part cooperates with the bearing part to clamp and position the sheet carbon material in the preset station, and the projection area of the positioning part on the sheet carbon material is smaller than the area of the sheet carbon material; and

[0007] A locking part is used to lock and connect the positioning part and the bearing part;

[0008] The carrier is provided with at least two first positioning structures, the positioning member is provided with a first positioning plate and at least two second positioning structures, and the second positioning structures are provided in one-to-one correspondence with the first positioning structures; after the second positioning structures are aligned or aligned with the corresponding first positioning structures, the projection area of the first positioning plate on the sheet-shaped carbon material is a non-bonding area, and the non-projection area of the first positioning plate on the sheet-shaped carbon material is a bonding area; or, the projection area of the positioning member on the sheet-shaped carbon material is a non-bonding area, and the non-projection area of the positioning member on the sheet-shaped carbon material is a bonding area.

[0009] Further, the carrier comprises a second positioning plate and a plurality of limiting structures provided on the second positioning plate, and the area enclosed by the plurality of limiting structures constitutes the preset station.

[0010] Further, the limiting structure comprises a positioning groove hole matched with the outer contour shape of the sheet-shaped carbon material; or the limiting structure comprises a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material; or the limiting structure comprises a positioning groove hole matched with the outer contour shape of the sheet-shaped carbon material and a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material.

[0011] Further, the positioning member comprises a first positioning plate and a positioning lug provided on the first positioning plate, and the positioning lug is provided with the second positioning structure.

[0012] Further, the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a first magnetic member provided on the carrier and a second magnetic member magnetically attracted to the first magnetic member.

[0013] Further, the carrier is provided with a first avoiding hole avoiding the first magnetic member, and the positioning member is provided with a second avoiding hole avoiding the second magnetic member.

[0014] Further, the first magnetic member is a magnet, and the second magnetic member is a magnet handle.

[0015] Further, the carrier and / or the positioning member are provided with weight-reducing holes.

[0016] Further, the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a shielding tape pasted on the non-bonding area of the sheet-shaped carbon material.

[0017] Further, the positioning member is provided with a third avoiding hole avoiding a pulling and binding buckle.

[0018] Compared with the prior art, the one or more technical solutions in the embodiment of the utility model have at least one of the following beneficial effects:

[0019] The positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material in the embodiment of the utility model is provided with the preset work station matched with the shape and size of the sheet-shaped carbon material on the bearing piece, and after the second positioning structure on the positioning piece is aligned or aligned with the corresponding first positioning structure on the bearing piece, the positioning piece is locked and connected on the bearing piece through the locking piece, so that the sheet-shaped carbon material can be stably positioned in the preset work station on the bearing piece. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows.

[0021] Figure 1 The structural schematic diagram of the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material provided in the embodiment of the utility model is shown in the figure.

[0022] Fig. 2 (a) is the positioning and identification structure schematic diagram of the bonding area and the non-bonding area of the sheet-shaped carbon material provided in the embodiment of the utility model (when the sheet-shaped carbon material is bonded with one side of the current collector provided with a flow channel);

[0023] Fig. 2 (b) is the positioning and identification structure schematic diagram of the bonding area and the non-bonding area of the sheet-shaped carbon material provided in the embodiment of the utility model (when the sheet-shaped carbon material is bonded with one side of the current collector not provided with a flow channel);

[0024] Figure 3 The structural schematic diagram of the bearing piece provided in the embodiment of the utility model is shown in the figure.

[0025] Figure 4 The structural schematic diagram of the positioning piece provided in the embodiment of the utility model is shown in the figure.

[0026] Figure 5The utility model provides a blast chart for auxiliary positioning piecey carbon material bonding area's positioning frock.

[0027] In the drawings, various reference signs refer to various objects:

[0028] 1-bearer; 11-second positioning plate; 12-limiting structure; 13-preset station; 14-first positioning structure; 15-first avoiding hole;

[0029] 2-positioning part; 21-first positioning plate; 22-positioning lug; 23-second positioning structure; 24-second avoiding hole; 25-third avoiding hole;

[0030] 3-locking part; 4-bonding area; 5-non-bonding area; 6-piecey carbon material;

[0031] 7-first magnetic part; 8-second magnetic part; 9-weight reduction hole; 10-pulling and binding wire buckle. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0033] It should be noted that when an element is referred to as being "connected with" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected with" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the terms "first", "second" are only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In the description of the utility model, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase "in one embodiment," "in some embodiments," or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0035] Reference should be made to Figures 1 to 5 The positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material provided by the embodiments of the present application comprises a bearing part 1, a positioning part 2 and a locking part 3, the bearing part 1 is provided with a preset station 13 capable of limiting the placement position of the sheet-shaped carbon material 6, the shape and size of the preset station 13 are adapted to the shape and size of the sheet-shaped carbon material 6, the positioning part 2 can clamp and position the sheet-shaped carbon material 6 in the preset station 13 in cooperation with the bearing part 1, and the locking part 3 can lock and connect the positioning part 2 to the bearing part 1, so that the sheet-shaped carbon material 6 can be stably positioned in the preset station 13 on the bearing part 1. In addition, the bearing part 1 is provided with a first positioning plate and at least two first positioning structures 14, and the positioning part 2 is provided with at least two second positioning structures 23, and the second positioning structures 23 are one-to-one correspondingly arranged with the first positioning structures 14. After the respective second positioning structures 23 on the positioning part 2 are aligned or aligned with the corresponding first positioning structures 14 on the bearing part 1, since the projection area of the positioning part 2 on the sheet-shaped carbon material 6 is smaller than the area of the sheet-shaped carbon material 6, the non-bonding area and the bonding area of the sheet-shaped carbon material can be positioned and identified according to the projection area of the positioning part or the first positioning plate 21 on the sheet-shaped carbon material.

[0036] Specifically, when the sheet-shaped carbon material 6 is bonded with the side of the current collecting frame without flow channel, the projection area of the first positioning plate 21 on the sheet-shaped carbon material 6 is the non-bonding area 5, and the non-projection area of the first positioning plate 21 on the sheet-shaped carbon material 6 is the bonding area 4, as shown in Fig. 2(b). When the sheet-shaped carbon material is bonded with the side of the current collecting frame provided with flow channel, the projection area of the positioning part 2 on the sheet-shaped carbon material 6 is the non-bonding area 5, and the non-projection area of the positioning part 2 on the sheet-shaped carbon material 6 is the bonding area 4, as shown in Fig. 2(a). Thus, the bonding area 4 and the non-bonding area 5 on the sheet-shaped carbon material 6 can be efficiently and accurately positioned and identified in the process of bonding the current collecting frame and the sheet-shaped carbon material 6 by using the adhesive as the intermediate material.

[0037] It should be noted that the projected area of the first positioning plate 21 on the sheet-shaped carbon material 6 can be the area of the sheet-shaped carbon material 6 covered by the first positioning plate 21, and the non-projected area of the first positioning plate 21 on the sheet-shaped carbon material 6 can be the area of the sheet-shaped carbon material 6 other than the area covered by the first positioning plate 21. The projected area of the positioning member 2 on the sheet-shaped carbon material 6 can be the area of the sheet-shaped carbon material 6 covered by the positioning member 2, and the non-projected area of the positioning member 2 on the sheet-shaped carbon material 6 can be the area of the sheet-shaped carbon material 6 other than the area covered by the positioning member 2.

[0038] In one embodiment, the first positioning structure 14 can be a first positioning hole provided on the carrier 1, and the second positioning structure 23 can be a second positioning hole provided on the positioning member 2. The locking member 3 can be a positioning pin. When the second positioning hole on the positioning member 2 is aligned with the corresponding first positioning hole on the carrier 1, the positioning pin is inserted into the second positioning hole and the corresponding first positioning hole in sequence, thereby achieving the locking connection between the positioning member 2 and the carrier 1. In another embodiment, the first positioning structure 14 can be a first positioning hole provided on the carrier 1, and the second positioning structure 23 can be a positioning column provided on the positioning member 2 to be inserted into the first positioning hole. The locking member 3 can be a bolt or a clamp for locking the carrier 1 and the positioning member 2. In another embodiment, the first positioning structure 14 can be a first positioning line provided on the carrier 1, and the second positioning structure 23 can be a second positioning line provided on the positioning member 2. The locking member 3 can be a bolt or a clamp for locking the carrier 1 and the positioning member 2. When the second positioning line on the positioning member 2 is aligned or overlapped with the corresponding first positioning line on the carrier 1, the positioning member 2 is locked to the carrier 1 by the bolt or the clamp.

[0039] Compared with the prior art, the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material is characterized in that: the preset work station 13 matched with the shape and size of the sheet-shaped carbon material 6 is arranged on the bearing part 1, the corresponding first positioning structure 14 on the bearing part 1 is aligned or aligned with each second positioning structure 23 on the positioning part 2, and then the positioning part 2 is locked and connected to the bearing part 1 through the locking part 3, so that the sheet-shaped carbon material 6 can be stably positioned in the preset work station 13 on the bearing part 1. Since the projection area of the positioning part 2 on the sheet-shaped carbon material 6 is smaller than the area of the sheet-shaped carbon material 6, the non-bonding area 5 and the bonding area 4 of the sheet-shaped carbon material 6 are marked by the projection area of the positioning part 2 or the first positioning plate 21 on the sheet-shaped carbon material 6, so that the bonding area 4 and the non-bonding area 5 on the sheet-shaped carbon material 6 can be efficiently and accurately marked during the process of bonding the sheet-shaped carbon material 6 and the current collecting frame by using the adhesive as an intermediate material, and the efficiency of bonding the sheet-shaped carbon material 6 and the current collecting frame can be improved, and the quality of bonding the sheet-shaped carbon material 6 and the current collecting frame can also be improved.

[0040] Please refer to Figure 1 、 Figure 3 and Figure 5 In some embodiments, the bearing part 1 comprises a second positioning plate 11 and a plurality of limiting structures 12 arranged on the second positioning plate 11, the area surrounded by the plurality of limiting structures 12 constitutes the preset work station 13, and the first positioning structure 14 is arranged on the second positioning plate 11. By arranging the plurality of limiting structures 12 on the second positioning plate 11, the sheet-shaped carbon material 6 is limited in the preset work station 13 formed by the plurality of limiting structures 12, and then the sheet-shaped carbon material 6 in the preset work station 13 is clamped and positioned by the positioning part 2 cooperating with the second positioning plate 11, so that the sheet-shaped carbon material 6 can be stably positioned in the preset work station 13 on the bearing part 1.

[0041] Please refer to Fig. 2(a), Fig. 2(b), Figure 3 and Figure 5 In some embodiments, the limiting structure 12 comprises a positioning groove hole matched with the outer contour shape of the sheet-shaped carbon material 6, and the positioning groove hole can be but is not limited to a four-corner arc groove hole. It can be understood that in another embodiment, the limiting structure 12 comprises a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material 6, and the positioning protruding rib can be but is not limited to a four-corner arc protruding rib. In another embodiment, the limiting structure 12 comprises a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material 6, and a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material 6.

[0042] Please refer to Figure 1 、 Figure 4 and Figure 5In some embodiments, the positioning member 2 comprises a first positioning plate 21 and at least one positioning lug 22 provided on the first positioning plate 21, and a second positioning structure 23 is provided on the positioning lug 22. The first positioning plate 21 cooperates with the second positioning plate 11 to clamp and position the sheet-shaped carbon material 6 in the preset work station 13, so that the sheet-shaped carbon material 6 can be stably positioned in the preset work station 13 on the carrier 1. In addition, two positioning lugs 22 are symmetrically provided on the first positioning plate 21, and a second positioning structure 23 is provided on each positioning lug 22. After the second positioning structure 23 on each positioning lug 22 is aligned or aligned with the corresponding first positioning structure 14 on the second positioning plate 11, the division of the non-bonding area 5 and the bonding area 4 is performed. Specifically, taking the bipolar plate as an example, 1) when the sheet-shaped carbon material 6 is bonded to the side of the current collecting frame without flow channels, after the carrier 1, the sheet-shaped carbon material 6 and the positioning member 2 are positioned and locked, a line is drawn on the sheet-shaped carbon material 6 along the contour of the first positioning plate 21, and no line is drawn at the positioning lug 22. Then, after removing the positioning member 2, the contour line of the first positioning plate 21 on the sheet-shaped carbon material 6 is connected into a whole annular shape, and the non-bonding area 5 inside the contour line and the bonding area 4 outside the contour line are obtained, as shown in FIG. 2(b). 2) When the sheet-shaped carbon material is bonded to the side of the current collecting frame provided with flow channels, the position of the positioning lug 22 also corresponds to the position of the flow channel inlet and outlet on the current collecting frame communicating with the electrode area. After the carrier 1, the sheet-shaped carbon material 6 and the positioning member 2 are positioned and locked, a line is drawn on the sheet-shaped carbon material 6 along the contour of the positioning member 2, and the positioning lug 22 is also drawn. Then, after removing the positioning member 2, the non-bonding area 5 inside the contour line of the positioning member 2 and the bonding area 4 outside the contour line shown in FIG. 2(a) are obtained. At this time, the design of the positioning lug 22 facilitates the clamping and positioning of the first positioning plate 21 and the second positioning plate 11, and on the other hand, it can also include the corresponding area of the sheet-shaped carbon material 6 and the flow channel inlet and outlet on the current collecting frame into the range of the non-bonding area 5.

[0043] Please refer to Figure 3 , Figure 4 and Figure 5In some embodiments, the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a first magnetic member 7 arranged on the carrier 1 and a second magnetic member 8 magnetically attracted to the first magnetic member 7. The carrier 1 is provided with a first avoiding hole 15 for avoiding the first magnetic member 7, the first magnetic member 7 is detachably installed in the first avoiding hole 15, and the first magnetic member 7 is located below the sheet-shaped carbon material 6, and the second magnetic member 8 is located above the sheet-shaped carbon material 6. The sheet-shaped carbon material 6 can be translated as a whole to the workbench of the high-precision dispensing equipment by the magnetic force between the second magnetic member 8 and the first magnetic member 7. In addition, in order to facilitate the removal of the positioning member 2 from the carrier 1, the positioning member 2 is provided with a second avoiding hole 24 for avoiding the second magnetic member 8, the second avoiding hole 24 corresponds to the first avoiding hole 15 in position, and the second magnetic member 8 is magnetically attracted to the first magnetic member 7 through the second avoiding hole 24. Specifically, after the carrier 1, the sheet-shaped carbon material 6 and the positioning member 2 are positioned and locked, a line is drawn on the sheet-shaped carbon material 6 along the contour of the second avoiding hole 24, and after the non-bonding area 5 and the bonding area 4 are divided, the positioning member 2 is removed, the second magnetic member 8 is placed in the contour line of the second avoiding hole 24, and the sheet-shaped carbon material 6 can be translated as a whole to the workbench of the high-precision dispensing equipment by holding the second magnetic member 8.

[0044] Please refer to Figure 5 In some embodiments, the first magnetic member 7 is a magnet, and the second magnetic member 8 is a magnet handle. Before dispensing the sheet-shaped carbon material 6, the magnet handle can be held by the magnetic force between the magnet handle and the magnet, so that the sheet-shaped carbon material 6 can be conveniently translated as a whole to the workbench of the high-precision dispensing equipment. After dispensing the sheet-shaped carbon material 6, the magnet handle is held again to place the sheet-shaped carbon material 6 after dispensing in the limiting plate of the pressing equipment, and then the magnet handle is removed.

[0045] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, in order to reduce the weight of the carrier 1 and / or the positioning member 2, the carrier 1 and / or the positioning member 2 are provided with weight-reducing holes 9, and the number of the weight-reducing holes 9 can be selected according to actual needs.

[0046] In some embodiments, the positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a shielding tape attached to the non-bonding area 5 of the sheet-shaped carbon material 6. The shielding tape attached to the non-bonding area 5 of the sheet-shaped carbon material 6 can be, but is not limited to, an ultra-thin PET single-sided shielding tape with a thickness of less than or equal to 0.02 mm, and the purpose is to prevent overflow of the non-bonding area 5 of the sheet-shaped carbon material 6 after pressing. After the non-bonding area 5 and the bonding area 4 are divided, the shielding tape is attached to the non-bonding area 5 along the boundary line between the non-bonding area 5 and the bonding area 4 (the contour line of the first positioning plate 21 on the sheet-shaped carbon material 6 or the contour line of the positioning member 2). After the sheet-shaped carbon material 6 is bonded with the current collector, the shielding tape is removed together with the overflow.

[0047] Please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, a third avoiding hole 25 is provided on the positioning member 2 to avoid the pulling and binding buckle 10. After the carrier 1, the sheet-shaped carbon material 6, and the positioning member 2 are positioned and locked, a line is drawn on the sheet-shaped carbon material 6 along the contour of the third avoiding hole 25. After the pressing and preparation are completed, the pulling and binding buckle 10 can be attached to the sheet-shaped carbon material 6 in the contour line of the third avoiding hole 25, and the purpose is to perform a mechanical pulling test to verify the bonding mechanical strength of the sheet-shaped carbon material 6 and the current collector after the bonding.

[0048] The above only describes preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning tool for assisting positioning of a bonding region of a sheet-like carbon material, characterized by, The positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material comprises the following: a carrier provided with a preset station capable of defining a sheet-shaped carbon material placement position; a positioning member cooperating with the carrier to clamp and position the sheet-shaped carbon material in the preset station, the projection area of the positioning member on the sheet-shaped carbon material being smaller than the area of the sheet-shaped carbon material; and a locking member for locking the positioning member and the carrier; the carrier is provided with at least two first positioning structures, the positioning member is provided with at least two second positioning structures corresponding to the first positioning structures one by one; after the second positioning structure and the corresponding first positioning structure are aligned or aligned, the projection area of the positioning member on the sheet-shaped carbon material is a non-bonding area, and the non-projection area of the positioning member on the sheet-shaped carbon material is a bonding area; or, the positioning member is provided with a first positioning plate, the projection area of the first positioning plate on the sheet-shaped carbon material is a non-bonding area, and the non-projection area of the first positioning plate on the sheet-shaped carbon material is a bonding area.

2. The positioning tool for assisting positioning of a bonding region of a sheet-shaped carbon material according to claim 1, characterized by, The carrier comprises a second positioning plate and a plurality of limiting structures arranged on the second positioning plate, and the area surrounded by the plurality of limiting structures constitutes the preset station, and the second positioning plate is provided with the first positioning structure.

3. The positioning tool for assisting positioning of a bonding area of a sheet-shaped carbon material according to claim 2, characterized by, The limiting structure comprises a positioning groove hole matched with the outer contour shape of the sheet-shaped carbon material; or, the limiting structure comprises a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material; or, the limiting structure comprises a positioning groove hole matched with the outer contour shape of the sheet-shaped carbon material, and a positioning protruding rib matched with the outer contour shape of the sheet-shaped carbon material.

4. The positioning tool for assisting positioning of a bonding area of a sheet-shaped carbon material according to Claim 1, wherein The positioning member comprises a first positioning plate and a positioning lug arranged on the first positioning plate, and the positioning lug is provided with the second positioning structure.

5. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to claim 1, characterized by, The positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a first magnetic member arranged on the carrier and a second magnetic member magnetically attracted to the first magnetic member.

6. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to claim 5, characterized by The carrier is provided with a first avoiding hole for avoiding the first magnetic member, and the positioning member is provided with a second avoiding hole for avoiding the second magnetic member.

7. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to claim 5, characterized by, The first magnetic member is a magnet, and the second magnetic member is a magnet handle.

8. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to claim 1, characterized by, The carrier and / or the positioning member is provided with a weight-reducing hole.

9. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to any one of claims 1 to 8, characterized in that, The positioning tool for assisting in positioning the bonding area of the sheet-shaped carbon material further comprises a shielding tape pasted on the non-bonding area of the sheet-shaped carbon material.

10. The positioning tool for assisting positioning of a bonding area of a sheet-like carbon material according to any one of claims 1 to 8, characterized by, The positioning member is provided with a third avoiding hole for avoiding a pulling and binding buckle.

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