Battery fixing device

Abstract

The utility model provides a battery fixing device which comprises a device body provided with a positioning groove extending along a first direction so as to accommodate at least part of a positive pole or at least part of a negative pole of a battery; wherein the device body is configured to be provided with a first matching groove wall, a second matching groove wall, a third matching groove wall and a fourth matching groove wall, the second matching groove wall is used for being matched with at least part of the positive pole in an abutting manner; the positioning groove is at least defined by a first matching groove wall and a second matching groove wall. In the embodiment of the utility model, the device body is provided with the positioning groove for accommodating at least part of the positive pole or at least part of the negative pole of the battery, and the positioning groove is at least enclosed by the first matching groove wall and the second matching groove wall, so that the positioning groove can be suitable for positioning the positive poles and the negative poles in different shapes at the same time; and the applicability of the fixing device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery fixing device. BACKGROUND

[0002] At present, cylindrical battery is transported in the stage from the shell process to the liquid injection process, and needs to go through the processes of positive cover plate welding and negative cover plate welding, and the positive or negative one end is downward, so the positive pole or negative pole needs to be positioned to enhance the stability of the battery.

[0003] In the related art, when the battery has positive poles and negative poles with different shapes, different fixing devices are usually replaced to cooperate with the positive poles or negative poles, and the applicability of the fixing device is poor. SUMMARY

[0004] The embodiment of the utility model provides a kind of battery fixing device to at least part of the above technical problems are solved.

[0005] The embodiment of the utility model provides a kind of battery fixing device, comprising:

[0006] Device body has the positioning slot extending along the first direction, to accommodate the at least part of the positive pole of battery or the at least part of negative pole;

[0007] Wherein, the device body is configured to have:

[0008] First cooperation slot wall is used to abut with the at least part of negative pole;

[0009] Second cooperation slot wall is used to abut with the at least part of positive pole;

[0010] Wherein, the positioning slot is at least enclosed by the first cooperation slot wall and the second cooperation slot wall.

[0011] Optionally, in some embodiments of the present application, at least part of the first cooperation slot wall protrudes along the second direction relative to the second cooperation slot wall;

[0012] At least part of the second cooperation slot wall protrudes along the third direction relative to the first cooperation slot wall;

[0013] Wherein, the second direction and the third direction are respectively intersected with the first direction.

[0014] Optionally, in some embodiments of the present application, the first cooperation slot wall comprises:

[0015] First cooperation section, which is arranged to intersect the second direction;

[0016] The second fitting section is arranged transversely to the third direction;

[0017] The first fitting section and the second fitting section are connected.

[0018] The second fitting section is arranged transversely to the third direction.

[0019] The second fitting groove wall comprises:

[0020] The third fitting section is arranged transversely to the third direction.

[0021] The fourth fitting section is arranged transversely to the second direction.

[0022] The first fitting section and the second fitting section are connected.

[0023] Optionally, in some embodiments of the present application, the device body further has:

[0024] The limiting groove is used for limiting the circumferential side of the battery.

[0025] In the first direction, the positioning groove is located on one side of the groove bottom of the limiting groove, and the limiting groove is in communication with the positioning groove.

[0026] Optionally, in some embodiments of the present application, the ratio of the inner diameter of the limiting groove to the depth of the positioning groove in the first direction is in the range of 8 to 12.5.

[0027] Optionally, in some embodiments of the present application, the ratio of the inner diameter of the limiting groove to the depth of the positioning groove in the first direction is in the range of 1 to 1.5.

[0028] Optionally, in some embodiments of the present application, the device body is further configured to have:

[0029] The guide hole is used for guiding the liquid injection needle to be docked with the liquid injection port of the battery.

[0030] In the first direction, the guide hole is located on one side of the groove bottom of the limiting groove, and the limiting groove is in communication with the positioning groove.

[0031] Optionally, in some embodiments of the present application, in the projection plane perpendicular to the first direction, the geometric center of the projection contour of the groove wall constituting the positioning groove on the projection plane coincides with the geometric center of the projection contour of the groove wall constituting the positioning groove on the projection plane.

[0032] Optionally, in some embodiments of the present application, the device body has a plurality of positioning grooves, and the plurality of positioning grooves are arranged at intervals in the second direction.

[0033] The second direction intersects the first direction.

[0034] And / or

[0035] The device body has a plurality of positioning grooves, and the plurality of positioning grooves are arranged at intervals in a third direction.

[0036] The third direction intersects the first direction.

[0037] Optionally, in some embodiments of the present application, the device body is configured to have:

[0038] A plurality of weight reduction holes penetrating through the device body along the first direction;

[0039] The weight reduction hole is arranged between two adjacent positioning grooves in a second direction, and the second direction intersects the first direction.

[0040] And / or

[0041] The weight reduction hole is arranged between two adjacent positioning grooves in a third direction, and the third direction intersects the first direction.

[0042] The beneficial effects of the embodiments of the present application are:

[0043] In the embodiments of the present application, by arranging the positioning groove in the device body to accommodate at least part of the positive pole column or at least part of the negative pole column of the battery, the positioning groove is at least surrounded by the first fitting groove wall and the second fitting groove wall, and the first fitting groove wall is in abutting fit with the negative pole column when the negative pole column is located in the positioning groove, thereby realizing the positioning of the negative pole column on the device body; the second fitting groove wall is in abutting fit with the positive pole column when the positive pole column is located in the positioning groove, thereby realizing the positioning of the positive pole column on the device body, so that the positioning groove can be suitable for positioning of positive pole columns and negative pole columns of different shapes at the same time, and the applicability of the fixing device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0045] Figure 1 is a perspective view of the battery fixing device provided by the embodiments of the present application;

[0046] Figure 2 is a perspective view of the battery fixing device from another angle provided by the embodiments of the present application;

[0047] Figure 3 is Figure 2 is an enlarged view of part A in figure 1;

[0048] Figure 4 is a top view of the battery fixing device provided by the embodiment of the present application;

[0049] Figure 5 is Figure 4 is an enlarged view of part B in figure 1;

[0050] Figure 6 is a perspective view of the battery fixing device cooperating with the battery provided by the embodiment of the present application;

[0051] Figure 7 is a bottom view of the battery fixing device cooperating with the negative pole post of the battery provided by the embodiment of the present application;

[0052] Figure 8 is Figure 7 is an enlarged view of part C in figure 1;

[0053] Figure 9 is a bottom view of the battery fixing device cooperating with the positive pole post of the battery provided by the embodiment of the present application;

[0054] Figure 10 is Figure 9 is an enlarged view of part D in figure 1;

[0055] Figure 11 is a sectional view of the battery fixing device cooperating with the battery provided by the embodiment of the present application;

[0056] Figure 12 is a perspective view of the battery provided by the embodiment of the present application;

[0057] Figure 13 is a perspective view of the battery from another angle provided by the embodiment of the present application.

[0058] Reference signs:

[0059] 100, fixing device;

[0060] 110, device body; 111, first surface; 112, second surface;

[0061] 113, first matching groove wall; 113a, first matching section; 113b, second matching section;

[0062] 114, second matching groove wall; 114a, third matching section; 114b, fourth matching section; 114c, fifth matching section;

[0063] 110a, positioning groove; M1, coinciding area; M2, first independent area; M3, second independent area;

[0064] 110b, limiting groove; 110c, guide hole; 110d, weight-reducing hole;

[0065] 200, battery; 210, negative pole; 220, positive pole; 230, liquid injection port. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0067] In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing surface direction in the drawings, unless otherwise stated. In addition, in the description of the present application, the term "comprising" means "including but not limited to". The terms first, second, third, etc. are only used as labels, and do not impose numerical requirements or establish sequences.

[0068] In the present application, "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone. Wherein A and B can be singular or plural.

[0069] In the first aspect, with reference to Figures 1 to 3 , Figures 7 to 10 The present application provides a battery fixing device 100, comprising: a device body 110.

[0070] The device body 110 has a positioning groove 110a extending in a first direction to accommodate at least part of the positive pole 220 or at least part of the negative pole 210 of the battery 200. More specifically, the positioning groove 110a is formed in the interior of the device body 110.

[0071] It should be noted that the first direction herein indicates the up-down direction only for the convenience of introducing the specific embodiments of the present application, and the first direction does not have an absolute corresponding relationship with the up-down direction. Similarly, the second direction does not have an absolute corresponding relationship with the front-rear direction, and the third direction does not have an absolute corresponding relationship with the left-right direction. Moreover, the first direction, the second direction and the third direction of the present application are only for expressing a relative positional relationship, and they only indicate the approximate direction, rather than an absolute geometric relationship.

[0072] The device body 110 is configured to have a first fitting groove wall 113 and a second fitting groove wall 114. The first fitting groove wall 113 is used to abut and fit with at least part of the negative pole post 210; the second fitting groove wall 114 is used to abut and fit with at least part of the positive pole post 220; and the positioning groove 110a is enclosed by at least the first fitting groove wall 113 and the second fitting groove wall 114.

[0073] It can be understood that, for the convenience of understanding the present application, reference is made to Figure 12 and Figure 13 The fixing device 100 of the present application is introduced by taking the shape of the negative pole post 210 as a rectangle and the shape of the positive pole post 220 as a hexagon. Of course, the shapes of the positive pole post 220 and the negative pole post 210 can also be designed as other shapes according to the application requirements of the battery 200, and no limitation is made to this.

[0074] In the case where the battery 200 has the positive pole post 220 and the negative pole post 210 with different shapes, the first fitting groove wall 113 can match the shape of the side wall of the negative pole post 210, and is in contact and fit with the side wall of the negative pole post 210 to realize the positioning of the negative pole post 210. The second fitting groove wall 114 can match the shape of the side wall of the positive pole post 220, and is in contact and fit with the side wall of the positive pole post 220 to realize the positioning of the positive pole post 220.

[0075] By adopting the above technical solution, the positioning groove 110a is arranged on the device body 110 to accommodate at least part of the positive pole post 220 or at least part of the negative pole post 210 of the battery 200. The positioning groove 110a is enclosed by at least the first fitting groove wall 113 and the second fitting groove wall 114. When the negative pole post 210 is located in the positioning groove 110a, the first fitting groove wall 113 is in abutment and fit with the negative pole post 210 to realize the positioning of the negative pole post 210 on the device body 110. When the positive pole post 220 is located in the positioning groove 110a, the second fitting groove wall 114 is in abutment and fit with the positive pole post 220 to realize the positioning of the positive pole post 220 on the device body 110. Thus, the positioning groove 110a can be simultaneously applicable to the positioning of the positive pole post 220 and the negative pole post 210 with different shapes, thereby improving the applicability of the fixing device 100 and reducing the auxiliary tooling cost during the production of the battery 200.

[0076] In some possible implementation manners, the positioning groove 110a is enclosed by the first fitting groove wall 113 and the second fitting groove wall 114. Of course, the first fitting groove wall 113 and the second fitting groove wall 114 can also be connected by other walls.

[0077] In some implementation manners of the present application, referring to Figures 3 to 5 at least a part of the first fitting groove wall 113 protrudes in the second direction relative to the second fitting groove wall 114; and at least a part of the second fitting groove wall 114 protrudes in the third direction relative to the first fitting groove wall 113.

[0078] The second direction and the third direction are respectively intersected with the first direction.

[0079] It should be noted that, referring to Figure 5 the part of the area enclosed by the first fitting groove wall 113 and the area enclosed by the second fitting groove wall 114 that coincide with each other is defined as the coincident area M1, and the first fitting groove wall 113 further encloses a first independent area M2 that is in communication with the coincident area M1, the first independent area M2 protrudes in the second direction, and the second fitting groove wall 114 further encloses a second independent area M3 that is in communication with the coincident area M1, the second independent area M3 protrudes in the third direction. The negative electrode post 210 can be inserted into the coincident area M1 and the first independent area M2, and the positive electrode post 220 can be inserted into the coincident area M1 and the second independent area M3, so as to realize the positioning of the negative electrode post 210 and the positive electrode post 220 respectively.

[0080] By adopting such a scheme, the positioning of the negative electrode post 210 and the positive electrode post 220 is realized respectively by limiting the first fitting groove wall 113 and the second fitting groove wall 114 to protrude in different directions.

[0081] In some implementation manners of the present application, referring to Figure 5 the first fitting groove wall 113 comprises a first fitting section 113a and a second fitting section 113b.

[0082] The first fitting section 113a is arranged to be intersected with the second direction, and the second fitting section 113b is arranged to be intersected with the third direction; and the first fitting section 113a and the second fitting section 113b are connected.

[0083] It can be understood that the first fitting section 113a can be arranged to be inclined or perpendicular to the second direction, so that the first fitting section 113a can abut against the negative electrode post 210 in the second direction of the negative electrode post 210; and the second fitting section 113b can be arranged to be inclined or perpendicular to the third direction, so that the second fitting section 113b can abut against the negative electrode post 210 in the third direction of the negative electrode post 210.

[0084] With such a scheme, by setting the first fitting section 113a and the second fitting section 113b in different directions, the first fitting groove wall 113 can realize positioning of the negative electrode post 210 in the left-right direction and the front-rear direction.

[0085] In some possible implementation manners, the first fitting section 113a is arranged perpendicularly to the second direction, and the second fitting section 113b is arranged perpendicularly to the third direction. That is, the first fitting groove wall 113 can be suitable for positioning of the negative electrode post 210 in a rectangular shape, and can overcome the problem that it is difficult to keep stable in the short side direction of the negative electrode post 210 when the negative electrode post 210 is downward.

[0086] In some possible implementation manners, the first fitting groove wall 113 is provided in two groups, and the two groups of first fitting groove walls 113 are symmetrically arranged in the second direction.

[0087] In some embodiments of the present application, with reference to Figure 5 , the second fitting groove wall 114 includes a third fitting section 114a and a fourth fitting section 114b.

[0088] The third fitting section 114a is arranged perpendicularly to the third direction, and the fourth fitting section 114b is arranged perpendicularly to the second direction; and the first fitting section 113a and the second fitting section 113b are connected.

[0089] It can be understood that the third fitting section 114a can be arranged obliquely or perpendicularly to the third direction, so that the third fitting section 114a can abut against the positive electrode post 220 in the third direction of the positive electrode post 220; and the fourth fitting section 114b can be arranged obliquely or perpendicularly to the second direction, so that the fourth fitting section 114b can abut against the positive electrode post 220 in the second direction of the positive electrode post 220.

[0090] With such a scheme, by setting the third fitting section 114a and the fourth fitting section 114b in different directions, the second fitting groove wall 114 can realize positioning of the negative electrode post 210 in the left-right direction and the front-rear direction.

[0091] In some possible implementation manners, the third fitting section 114a is arranged perpendicularly to the third direction, and the fourth fitting section 114b is arranged perpendicularly to the second direction. The second fitting groove further includes a fifth fitting section 114c, the fifth fitting section 114c is arranged obliquely to the second direction or the third direction, and the third fitting section 114a is arranged between the fifth fitting section 114c and the fourth fitting section 114b, so that the second fitting groove wall 114 can be suitable for positioning of the positive electrode post 220 in a hexagonal shape.

[0092] In some possible embodiments, the first fitting groove wall 113 is provided with two groups, and the two groups of first fitting groove walls 113 are symmetrically arranged in the second direction.

[0093] In some possible embodiments, on the basis of the positioning groove 110a positioning the negative pole post 210 or the positive pole post 220, the device 100 outside the battery 200 periphery can also be fixed by other structures on the device body 110 to improve the stability of the battery 200 during the transfer or liquid injection.

[0094] In some embodiments of the present application, referring to Figure 1 and Figure 11 , the device body 110 further has a limiting groove 110b.

[0095] The limiting groove 110b is used for limiting the periphery of the battery 200; in the first direction, the positioning groove 110a is located on one side of the groove bottom of the limiting groove 110b, and the limiting groove 110b is in communication with the positioning groove 110a, so that the negative pole post 210 or the positive pole post 220 can pass through the limiting groove 110b to enter the positioning groove 110a.

[0096] It can be understood that the inner diameter of the limiting groove 110b is greater than or equal to the outer diameter of the battery 200, so that the battery 200 can smoothly enter the limiting groove 110b, and at the same time, the shaking of the battery 200 can be limited within a smaller range.

[0097] In some possible embodiments, the device body 110 further has a first surface 111 and a second surface 112 arranged oppositely, wherein the limiting groove 110b penetrates through the first surface 111, and the positioning groove 110a penetrates through the second surface 112.

[0098] In some embodiments of the present application, referring to Figure 11 , the ratio of the inner diameter D1 of the limiting groove 110b to the depth L1 of the positioning groove 110a in the first direction is 8 to 12.5.

[0099] Since the inner diameter of the limiting groove 110b is related to the outer diameter of the battery 200, and the pole post height generally has a certain proportional relationship with the outer diameter of the battery 200, by limiting the ratio of the inner diameter of the limiting groove 110b to the depth of the positioning groove 110a in the first direction, the relationship between the depth of the positioning groove 110a and the pole post (negative pole post 210 or positive pole post) height H1 can be indirectly limited.

[0100] In some possible embodiments, the depth of the positioning groove 110a is greater than or equal to the height of the pole post, which can avoid the pole post protruding from the second surface 112, and in the battery 200 transfer process, the pole post can avoid contacting the transfer equipment (such as a conveyor belt) at the bottom to affect the stability of the battery 200.

[0101] In some possible embodiments, the depth of the positioning groove 110a is equal to the height of the pole, which can avoid the pole from contacting the bottom of the transfer equipment during the transfer of the battery 200, thereby affecting the stability of the battery 200, and ensure that the pole can be observed during the liquid injection of the battery 200.

[0102] In some possible embodiments, the ratio of the inner diameter D1 of the limiting groove 110b to the depth L1 of the positioning groove 110a in the first direction can be one of 8 to 9, 9 to 10, 10 to 11, 11 to 12, and 12 to 12.5.

[0103] In some embodiments of the present application, referring to Figure 11 , the ratio of the inner diameter D1 of the limiting groove 110b to the depth L2 of the limiting groove 110b in the first direction is 1 to 1.5.

[0104] Since the inner diameter of the limiting groove 110b is related to the outer diameter of the battery 200, and the height of the battery 200 is generally in a certain proportional relationship with the outer diameter of the battery 200, by limiting the ratio of the inner diameter of the limiting groove 110b to the depth of the limiting groove 110b in the first direction, the relationship between the depth of the limiting groove 110b and the height H2 of the battery 200 (which can be a part other than the pole) can be indirectly limited.

[0105] In some possible embodiments, the depth of the limiting groove 110b is greater than or equal to one-third of the height of the battery 200, which can ensure the stability of the battery 200 during transfer and facilitate the clamping of the battery 200.

[0106] In some possible embodiments, the ratio of the inner diameter D1 of the limiting groove 110b to the depth L2 of the limiting groove 110b in the first direction can be one of 1 to 1.1, 1.1 to 1.2, 1.2 to 1.3, 1.4 to 1.5.

[0107] In some embodiments of the present application, referring to Figure 3 , Figure 10 and Figure 13 , the device body 110 is further configured to have a guide hole 110c.

[0108] The guide hole 110c is used to guide the liquid injection needle to be connected with the liquid injection port 230 of the battery 200. In the first direction, the guide hole 110c is located on the side of the groove bottom of the limiting groove 110b and communicates with the limiting groove 110b.

[0109] It can be understood that the distance between the guide hole 110c and the above geometric center is less than the inner diameter of the limiting groove 110b.

[0110] With such a scheme, the fixing device 100 of the present application can not only be used for the transfer of the battery 200, but also can guide the injection needle when the battery 200 is injected, and assist the alignment of the injection needle and the injection port 230 of the battery 200.

[0111] In some embodiments of the present application, on a projection plane perpendicular to the first direction, the geometric center of the projection profile of the slot wall constituting the positioning slot 110a on the projection plane coincides with the geometric center of the projection profile of the slot wall constituting the positioning slot 110a on the projection plane.

[0112] By limiting the relationship between the above two geometric centers, when the negative pole 210 or the positive pole 220 cooperates with the positioning slot 110a, the centering of the negative pole 210 or the positive pole 220 can be achieved, and it is ensured that the guide hole 110c can be automatically aligned with the injection port 230 of the battery 200, thereby improving the injection efficiency.

[0113] In some embodiments of the present application, referring to Figure 1 and Figure 2 , the device body 110 has a plurality of positioning slots 110a, and the plurality of positioning slots 110a are arranged at intervals in the second direction; wherein the second direction intersects the first direction.

[0114] With such a scheme, the device body 110 can simultaneously realize the positioning of a plurality of batteries 200, thereby improving the transfer efficiency of the battery 200.

[0115] In some embodiments of the present application, referring to Figure 1 and Figure 2 , the device body 110 has a plurality of positioning slots 110a, and the plurality of positioning slots 110a are arranged at intervals in the third direction; wherein the third direction intersects the first direction.

[0116] With such a scheme, the device body 110 can simultaneously realize the positioning of a plurality of batteries 200, thereby improving the transfer efficiency of the battery 200.

[0117] In some possible embodiments, the plurality of positioning slots 110a are arranged along mutually perpendicular second and third directions, respectively.

[0118] In order to facilitate the clamping of the battery 200, there is a spacing between adjacent positioning slots 110a, however, the existence of these spacings will cause the device body 110 to have redundant structural weight. In some embodiments of the present application, referring to Figure 1 and Figure 2 , the device body 110 is configured to have a plurality of lightening holes 110d.

[0119] A plurality of lightening holes 110d are arranged through the device body 110 in a first direction; wherein, the lightening holes 110d are arranged between two adjacent positioning grooves 110a in a second direction, and the second direction intersects the first direction.

[0120] By adopting the scheme, the weight of the device body 110 is reduced by arranging the lightening holes 110d.

[0121] In some embodiments of the present application, referring to Figure 1 and Figure 2 the lightening holes 110d are arranged between two adjacent positioning grooves 110a in a third direction, and the third direction intersects the first direction.

[0122] By adopting the scheme, the weight of the device body 110 is reduced by arranging the lightening holes 110d.

[0123] In some possible embodiments, the lightening holes 110d can be arranged between two adjacent positioning grooves 110a in the second direction, or the lightening holes 110d can be arranged between two adjacent positioning grooves 110a in the third direction, or the lightening holes 110d can be arranged in the second direction and the third direction of the positioning grooves 110a.

[0124] In some possible embodiments, the lightening holes 110d are arranged between two adjacent positioning grooves 110a in the left-right direction only, so as to reduce the weight and ensure the structural strength of the device body 110.

[0125] The above has introduced the embodiments of the present application in detail, and the principle and implementation mode of the present application have been described by applying specific examples; the above embodiment is only used for helping to understand the method and core idea of the present application; meanwhile, for the person skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A battery securing device, characterized by The device body has a positioning slot extending in a first direction to accommodate at least part of a positive pole or at least part of a negative pole of a battery. The device body is configured to have: a first fitting slot wall for abutting fitting with at least part of the negative pole; a second fitting slot wall for abutting fitting with at least part of the positive pole; The positioning slot is enclosed by the first fitting slot wall and the second fitting slot wall. At least part of the first fitting slot wall protrudes in a second direction relative to the second fitting slot wall; 2. The battery securing device of claim 1, wherein, At least part of the second fitting slot wall protrudes in a third direction relative to the first fitting slot wall; The second direction and the third direction respectively intersect the first direction. The first fitting slot wall comprises:

3. The battery securing device of claim 2, wherein, a first fitting section arranged to intersect the second direction; a second fitting section arranged to intersect the third direction; The first fitting section and the second fitting section are connected. And / or The second fitting slot wall comprises: a third fitting section arranged to intersect the third direction; a fourth fitting section arranged to intersect the second direction; The first fitting section and the second fitting section are connected. The device body further has:

4. The battery securing device according to any one of claims 1 to 3, characterized in that a limiting slot for limiting the circumferential side of the battery; In the first direction, the positioning slot is located on one side of the bottom of the limiting slot, and the limiting slot is in communication with the positioning slot. The ratio of the inner diameter of the limiting slot to the depth of the positioning slot in the first direction is in the range of 8 to 12.

5.

5. The battery securement device of claim 4, wherein, The ratio of the inner diameter of the limiting slot to the depth of the limiting slot in the first direction is in the range of 1 to 1.

5.

6. The battery securement device of claim 4, wherein, The device body is further configured to have:

7. The battery securement device of claim 4, wherein, a guide hole for guiding a liquid injection needle to be docked with a liquid injection port of the battery; In the first direction, the guide hole is located on one side of the bottom of the limiting slot, and is in communication with the limiting slot. In a projection plane perpendicular to the first direction, the geometric center of the projection profile of the slot wall constituting the positioning slot on the projection plane coincides with the geometric center of the projection profile of the slot wall constituting the positioning slot on the projection plane.

8. The battery securement device of claim 4, wherein, The device body has a plurality of positioning slots, and the plurality of positioning slots are arranged in a second direction; 9. The battery securing device of any one of claims 1 to 3, wherein, The second direction intersects the first direction. And / or The device body has a plurality of positioning slots, and the plurality of positioning slots are arranged in a third direction; The third direction intersects the first direction. The device body is configured to have:

10. The battery securing arrangement of any one of claims 1 to 3, wherein, a plurality of weight reduction holes penetrating the device body in the first direction; In a second direction, the weight reduction holes are arranged between two adjacent positioning slots, and the second direction intersects the first direction; And / or In a third direction, the weight reduction holes are arranged between two adjacent positioning slots, and the third direction intersects the first direction. ​

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