Battery static tooling

Abstract

The present invention relates to the technical field of new energy batteries, and discloses a battery static fixture. After the battery is filled with liquid, one end of the battery can be inserted into a battery mounting hole for static placement. Since the lithium potential of the structural member is relatively low, the lithium potential of the negative electrode of the battery can be reduced after the structural member contacts the battery shell, thereby inhibiting the iron in the damaged part of the battery shell plating from being oxidized and precipitated, and significantly reducing the occurrence of battery shell corrosion. The battery static fixture includes: a cover body, the cover body is provided with at least one battery mounting hole, the battery mounting hole is suitable for inserting one end of the battery, the inner wall of the battery mounting hole is provided with a structural member, the structural member is suitable for abutting the outer wall of the battery shell, the lithium potential of the structural member is less than the lithium potential of the battery shell, the lithium potential of the structural member is T, the surface area of ​​the structural member is S, the range of T / S satisfies 0<T / S≤2.9, and the unit of T / S is V / cm 2 .

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a battery stationary tooling. Background Art

[0002] With the continuous development of new energy technology, new energy batteries, as an environmentally friendly energy storage and release device, have been widely used in energy storage power systems such as hydropower, thermal, wind and solar power stations, as well as power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace and many other technical fields.

[0003] The shell of existing cylindrical batteries is usually made of nickel-plated stainless steel, which serves as the negative electrode of the battery. When the battery is sealed and welded, the shell coating may be damaged, exposing the iron-containing stainless steel. After the battery is filled with liquid, the negative electrode's potential for lithium is greater than the oxidation potential of iron. The iron in the stainless steel where the coating is damaged is easily oxidized. During the battery charging and discharging process, the negative electrode is reduced, and iron and iron oxides will be deposited at the current collecting plate of the shell. Some iron and iron oxides will also exist between the battery pole pieces, resulting in discrete self-discharge of the battery, abnormal self-discharge problems, and affecting battery performance. Summary of the invention

[0004] In view of this, the present invention provides a battery static tooling to solve the problem that the existing battery shell plating layer is easily corroded after being damaged, resulting in abnormal self-discharge and affecting battery performance.

[0005] In a first aspect, the present invention provides a battery static fixture, comprising: a cover body, the cover body is provided with at least one battery mounting hole, the battery mounting hole is suitable for inserting one end of a battery, the inner wall of the battery mounting hole is provided with a structural member, the structural member is suitable for abutting against the outer wall of the battery shell, the lithium potential of the structural member is less than the lithium potential of the battery shell, the lithium potential of the structural member is T, the surface area of ​​the structural member is S, the range of T / S satisfies 0<T / S≤2.9, and the unit of T / S is V / cm 2 .

[0006] Beneficial effect: According to the battery static tooling of the present invention, after the battery is filled with liquid, one end of the battery can be inserted into the battery mounting hole for static placement, and the structural member is continuously in contact with the outer wall of the battery shell. Since the lithium potential of the structural member is lower than the lithium potential of the battery shell, the structural member forms an equipotential body after contact with the battery shell, which can reduce the lithium potential of the battery shell (negative electrode), thereby inhibiting the oxidation and precipitation of iron in the damaged part of the battery shell coating, significantly reducing the occurrence of battery shell corrosion, solving the problem of abnormal battery self-discharge, and improving battery performance. In addition, by limiting the range of the ratio of the lithium potential T of the structural part to the surface area S of the structural part, that is, 0<T / S≤2.9, when the structural part adopts a metal material with a low lithium potential, the structural part that meets the above ratio range can quickly lower the lithium potential of the battery shell, so the surface area of ​​the structural part can be smaller, that is, the contact area between the structural part and the battery shell can be smaller, in order to save costs. When the structural part adopts a metal material with a high lithium potential, in order to quickly lower the lithium potential of the battery shell, the surface area of ​​the structural part needs to be larger, that is, the contact area between the structural part and the battery shell is larger. The structural part that meets the above ratio range can effectively and quickly reduce the lithium potential of the battery shell and significantly reduce the occurrence of battery shell corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0008] Figure 1 It is an overall exploded schematic diagram of the battery stationary tooling of the present invention;

[0009] Figure 2 It is a schematic diagram of a cover body in a battery stationary tooling of the present invention;

[0010] Figure 3 It is a cross-sectional view of the cooperation between the cover body and the battery in the battery stationary tooling of the present invention.

[0011] Description of reference numerals:

[0012] 1. Cover; 101. Battery mounting hole; 2. Battery; 3. Structural parts; 4. Tray. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0014] Combine the following Figure 1 , Figure 2 and Figure 3 , describing an embodiment of the battery static tooling of the present invention.

[0015] According to an embodiment of the present invention, on the one hand, a battery static tool is provided, comprising: a cover body 1, at least one battery installation hole 101 is provided on the cover body 1, the battery installation hole 101 is suitable for inserting one end of a battery 2, a structural member 3 is provided on the inner wall of the battery installation hole 101, the structural member 3 is suitable for abutting against the outer wall of the shell of the battery 2, the lithium potential of the structural member 3 is less than the lithium potential of the shell of the battery 2, the lithium potential of the structural member 3 is T, the surface area of ​​the structural member 3 is S, the range of T / S satisfies 0<T / S≤2.9, and the unit of T / S is V / cm 2 .

[0016] In this battery static tooling, after the battery 2 is filled with liquid, one end of the battery 2 can be inserted into the battery mounting hole 101 for static placement, and the structural member 3 is continuously in contact with the outer wall of the battery 2 shell. Since the lithium potential of the structural member 3 is lower than the lithium potential of the battery 2 shell, the structural member 3 forms an equipotential body after contacting the battery 2 shell, which can reduce the lithium potential of the battery 2 shell (negative electrode), thereby inhibiting the iron in the damaged part of the battery 2 shell coating from being oxidized and precipitated, significantly reducing the occurrence of battery 2 shell corrosion, solving the problem of abnormal battery self-discharge, and improving battery performance. In addition, by limiting the range of the ratio of the lithium potential T of the structural member 3 to the surface area S of the structural member 3, that is, 0<T / S≤2.9, when the structural member 3 is made of a metal material with a low lithium potential, the structural member 3 that meets the above ratio range can quickly lower the lithium potential of the battery 2 shell, so the surface area of ​​the structural member 3 can be smaller, that is, the contact area between the structural member 3 and the battery 2 shell can be smaller, to save costs, and when the structural member 3 is made of a metal material with a high lithium potential, in order to quickly lower the lithium potential of the battery 2 shell, the surface area of ​​the structural member 3 needs to be larger, that is, the contact area between the structural member 3 and the battery 2 shell is larger. The structural member 3 that meets the above ratio range can effectively and quickly reduce the lithium potential of the battery 2 shell, and significantly reduce the occurrence of battery 2 shell corrosion.

[0017] The battery static fixture of this embodiment is used to statically place the battery after the battery is once filled with liquid and before formation. The function of the battery static fixture is to reduce the lithium potential of the battery shell (negative electrode) to reduce or avoid the oxidation and precipitation of iron in the damaged part of the battery shell plating, significantly reduce the occurrence of battery shell corrosion, and solve the problem of abnormal battery self-discharge.

[0018] In this embodiment, the lithium potential refers to the potential of the working electrode obtained by testing when lithium metal is used as a reference electrode in a battery test.

[0019] The size of the cover 1 matches the number of batteries 2 to be placed, and the cover 1 is provided with at least one battery mounting hole 101, the number of which is equal to or greater than the number of batteries 2 to be placed. The number of the battery mounting holes 101 can be one, or two or more.

[0020] In this embodiment, twenty-five battery mounting holes 101 are arranged on the side of the cover body 1 facing the battery 2, and five battery mounting holes 101 form a row, and a total of five rows of battery mounting holes 101 are arranged. Therefore, the battery stationary tool of this embodiment is suitable for stationary 25 batteries 2 at most at the same time.

[0021] The battery mounting hole 101 is suitable for inserting one end of the battery 2, for example, the positive end of the battery 2 can be inserted into the battery mounting hole 101, and the negative end of the battery 2 can also be inserted into the battery mounting hole 101, as long as it is ensured that the structural member 3 can continuously abut against the outer wall of the shell of the battery 2. The positive end of the battery 2 refers to the end where the positive electrode of the battery is provided, and the negative end of the battery 2 refers to the end opposite to the positive end.

[0022] The structural member 3 is arranged on the inner wall of the battery installation hole 101. When one end of the battery 2 is inserted into the battery installation hole 101, the structural member 3 can abut against the outer wall of the battery shell 2 to reduce the lithium potential of the negative electrode of the battery. The lithium potential of the structural member 3 is lower than the lithium potential of the battery shell 2. After the structural member 3 contacts the outer wall of the battery shell 2, the outer wall of the battery shell 2 is the negative electrode of the battery. The structural member 3 can lower the lithium potential of the negative electrode of the battery, inhibit the iron in the damaged part of the battery shell coating from being oxidized and precipitated, thereby reducing the occurrence of battery shell corrosion.

[0023] The range of the ratio of the lithium potential T of the structural member 3 to the surface area S of the structural member 3 is limited, that is, 0<T / S≤2.9. The structural member 3 in the above ratio range can effectively and quickly reduce the lithium potential of the battery 2 shell and significantly reduce the occurrence of corrosion of the battery 2 shell.

[0024] For example, the ratio T / S of the lithium potential T of the structural member 3 to the surface area S of the structural member 3 may be 0.1, 0.5, 1, 1.3, 1.7, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, etc.

[0025] Further, the potential of the structural member 3 to lithium is 0<T≤2.9 V. For example, the potential of the structural member 3 to lithium can be 2.9 V, 2.2 V, 2 V, 1.5 V, 1.1 V, 0.8 V, 0.4 V, etc.

[0026] Optionally, the potential of the structural member 3 to lithium is equal to or less than the oxidation potential of iron, so as to enhance the effect of suppressing the oxidation and precipitation of iron in the damaged portion of the plating layer of the battery housing.

[0027] Furthermore, the surface area S of the structural member 3 is in the range of 1 cm 2 ≤S≤144.5cm 2 .

[0028] The inner wall of the battery mounting hole 101 is provided with a structural member 3, and the structural member 3 is used to abut the outer wall of the shell of the battery 2. The internal space of the battery mounting hole 101 is limited. If the surface area S of the structural member 3 is too large, the structural member 3 will occupy too much setting space and affect the setting of the battery 2. If the surface area S of the structural member 3 is too small, it is not conducive to quickly lowering the lithium potential of the battery 2 shell.

[0029] For example, the surface area S of the structural member 3 may be 1 cm 2 , 6 cm 2 , 15 cm 2 、23 cm 2 、36 cm 2 、42 cm 2 、58 cm 2 、67 cm 2 、74 cm 2 、85 cm 2 、96 cm 2 、103 cm 2 、122 cm 2 、137 cm 2 、144.5 cm 2 wait.

[0030] The battery mounting hole 101 is a blind hole, the height of the structural member 3 along the depth direction of the battery mounting hole 101 is H, the depth of the battery mounting hole 101 is d, and the ratio range of H:d is 0.9≤H / d≤1. For example, the ratio of H:d can be 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1, etc. Within the above ratio range, the height of the structural member 3 will not be greater than the depth of the battery mounting hole 101, and the structural member 3 will not exceed the battery mounting hole 101 to avoid scratching the battery shell. At the same time, within the above ratio range, the structural member 3 will not be too small, which will affect the contact between the structural member 3 and the outer wall of the battery shell and the effect of reducing the negative electrode's lithium potential. The structural member 3 of the above ratio has a large contact area with the shell of the battery 2, which can make the structural member 3 fully contact with the outer wall of the shell of the battery 2 to effectively reduce the lithium potential of the negative electrode of the battery.

[0031] Furthermore, the thickness of the structural member 3 along the radial direction of the battery mounting hole 101 is I, and the range of the thickness I is 1 mm≤I≤2 mm.

[0032] Along the radial direction of the battery mounting hole 101, the thickness of the structural member 3 is I, and the range of the thickness I of the structural member 3 is 1mm≤I≤2mm. If the thickness of the structural member 3 is too thick, it will cause indentations on the shell of the battery 2 and damage the shell of the battery 2. If the thickness of the structural member 3 is too thin, the structural member 3 cannot reliably contact the shell of the battery 2, affecting the effect of reducing the lithium potential of the battery shell. The structural member 3 within the above thickness range will not damage the shell of the battery 2, and can reliably contact the shell of the battery 2 to ensure the effect of reducing the lithium potential of the negative electrode of the battery.

[0033] For example, the thickness I of the structural member 3 along the radial direction of the battery mounting hole 101 may be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc.

[0034] Furthermore, the structural member 3 is an arc-shaped structure arranged along the circumference of the battery installation hole 101 , the arc length of the structural member 3 is L, the circumference of the battery installation hole 101 is c, and the ratio range of L:c is 0.07≤L / c≤1.

[0035] Since the battery mounting hole 101 is a circular hole, the circumference of its inner wall is c, and the ratio of the arc length L of the structural member 3 to the circumference c of the inner wall of the battery mounting hole 101 is 0.07≤L / c≤1. If the above ratio is too small, it is easy to cause the structural member 3 to not have sufficiently reliable and effective contact with the outer wall of the battery 2 shell, affecting the effect of reducing the lithium potential of the battery negative electrode. If the above ratio is too large, the processing accuracy of the structural member 3 is high, which will increase the manufacturing difficulty and manufacturing cost. The structural member 3 within the above ratio range can fully fit and contact the outer wall of the battery 2 shell, which can not only ensure that the contact surface is large enough, but also protect the battery 2, and is conducive to reducing manufacturing costs.

[0036] For example, the ratio of L:c can be 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, etc.

[0037] Furthermore, the arc length of the structural member 3 is in the range of 10 mm ≤ L ≤ 144 mm.

[0038] Since the battery mounting hole 101 is a circular hole, and its inner wall is an arc-shaped structure, in order to reliably set the structural member 3, the structural member 3 as a whole is an arc-shaped structure matching the inner wall of the battery mounting hole 101. The arc length of the structural member 3 is L, and the range of the arc length L is 10mm≤L≤144mm. The above range of arc length L ensures that the structural member 3 can reliably contact the outer wall of the shell of the battery 2, and the contact surface is large enough to ensure the effect of reducing the lithium potential of the negative electrode of the battery.

[0039] For example, the arc length L of the structural member 3 may be 10 mm, 21 mm, 33 mm, 46 mm, 52 mm, 68 mm, 72 mm, 88 mm, 96 mm, 105 mm, 113 mm, 126 mm, 139 mm, 144 mm, etc.

[0040] Furthermore, a chamfer is formed on one side of the structural member 3 along the depth direction of the battery installation hole 101 and close to the open end of the battery installation hole 101 .

[0041] That is, the angle between the end face of the structural member 3 facing the battery 2 and the side face of the structural member 3 abutting against the battery 2 forms a chamfer. In this embodiment, the positive terminal of the battery 2 is inserted into the battery mounting hole 101, that is, the cover body 1 is arranged above the battery 2 as a whole. Since the cover body 1 is arranged on the upper end (positive end) of the battery 2, the angle between the lower end face of the structural member 3 and the side face abutting against the outer wall of the battery shell forms a chamfer. In the process of inserting one end of the battery 2 into the battery mounting hole 101, the chamfer can protect the battery 2 so that the shell of the battery 2 will not be scratched, thereby avoiding affecting the quality of the battery product.

[0042] Furthermore, the inner wall of the battery installation hole 101 includes a side wall and a bottom wall, the structural member 3 is L-shaped, and the structural member 3 is attached to the side wall and the bottom wall of the battery installation hole 101 .

[0043] The battery mounting hole 101 is a blind hole, and the inner wall of the battery mounting hole 101 includes a side wall and a bottom wall. The structural member 3 is an overall L-shaped structure. When the structural member 3 is set to the battery mounting hole 101, the structural member 3 is integrally attached to the inner wall of the battery mounting hole 101, that is, the structural member 3 is attached to the side wall and bottom wall of the battery mounting hole 101 to avoid the installation path of the battery 2, and at the same time it is beneficial to reduce the space occupied by the structural member 3 in the battery mounting hole 101.

[0044] Furthermore, a plurality of structural members 3 are provided, and adjacent structural members 3 are evenly spaced apart.

[0045] The number of structural members 3 may be one, or two or more. By increasing the number of structural members 3, the rate and effect of reducing the potential of the negative electrode of the battery to lithium can be improved. Optionally, adjacent structural members 3 are evenly spaced, which can not only improve the effect of reducing the potential of the negative electrode of the battery to lithium, but also make the force on the four sides of the battery 2 uniform, so that the battery 2 is arranged in the center as a whole, which is conducive to improving the reliability and stability of the structure.

[0046] Furthermore, an even number of structural members 3 are provided, and the structural members 3 are arranged opposite to each other in pairs. The even number of structural members 3 are arranged opposite to each other in pairs, which can further improve the uniformity of the force on the battery 2 and improve the structural reliability, and is also conducive to further improving the rate and effect of reducing the lithium potential of the battery negative electrode.

[0047] In this embodiment, two structural members 3 are provided, and the two structural members 3 are arranged opposite to each other.

[0048] In this embodiment, the structural member 3 is made of aluminum, which is easy to obtain and has a low cost, which is conducive to reducing the manufacturing cost of the overall tooling device.

[0049] Furthermore, the cross section of the battery installation hole 101 perpendicular to its depth direction is circular.

[0050] In this embodiment, the battery 2 is a cylindrical battery, so the cross section of the battery mounting hole 101 perpendicular to its depth direction is circular, that is, the cross section of the battery mounting hole 101 perpendicular to its axial direction is circular, so as to adapt to the static placement of the cylindrical battery. The inner diameter of the battery mounting hole 101 is larger than the outer diameter of the shell of the battery 2, so that the battery 2 can be smoothly inserted into the battery mounting hole 101.

[0051] Furthermore, the battery storage tool further comprises a tray 4 , which is suitable for accommodating at least one battery 2 , and the cover 1 cooperates with an open end of the tray 4 .

[0052] like Figure 1As shown, the tray 4 has a certain depth, the depth of the tray 4 matches the axial height of the battery 2, and the size of the tray 4 also matches the number of batteries 2 to be placed. In this embodiment, the tray 4 is a cube-like structure, and the cover 1 is a square cover. The tray 4 has an open end, which is arranged upward, and the cover 1 is suitable for covering the open end. The battery 2 is suitable for being placed vertically in the tray 4.

[0053] Optionally, a battery placement position can be pre-set at the bottom of the tray 4, which corresponds to the position of each battery installation hole 101 on the cover 1, so that the operator can quickly place the battery 2 to be stationary into the tray 4 and cover the cover 1 in a matching manner.

[0054] The following describes the static process of the battery by the battery static tooling of this embodiment in conjunction with the accompanying drawings:

[0055] After the battery 2 is injected once and before formation, the battery 2 needs to be placed in the battery resting tool of this embodiment for resting, so as to reduce the lithium potential of the battery negative electrode and improve the corrosion of the battery shell.

[0056] First, place each battery 2 to be placed in the tray 4, and then cover the cover 1. Each battery installation hole 101 corresponds to a battery 2. Insert the positive terminal of the battery 2 into the battery installation hole 101. When the positive terminal of the battery 2 is inserted into the battery installation hole 101, the structural member 3 will abut against the outer wall of the shell of the battery 2. Since the lithium potential of the structural member 3 is lower than the lithium potential of the negative electrode of the battery, after the structural member 3 contacts the outer wall of the shell of the battery 2, the structural member 3 and the outer wall of the shell of the battery 2 become equipotential bodies, so that the lithium potential of the negative electrode of the battery is reduced. In order to ensure the effect, the above-mentioned static process lasts for at least 24 hours.

[0057] When the battery begins to form and charge, the potential of the positive electrode of the battery to lithium increases, and the potential of the negative electrode of the battery to lithium decreases, so the problem of shell corrosion and oxidation will not occur. At this time, the battery 2 can be taken out from the battery static tooling of this embodiment to complete the static process.

[0058] Through the above-mentioned static process, the lithium potential of the battery negative electrode can be reduced before the battery is formed, which can effectively inhibit the oxidation and precipitation of iron in the damaged part of the battery shell plating, significantly reduce the corrosion of the battery shell, thereby ensuring battery performance and improving product quality.

[0059] In other embodiments, in order to avoid direct contact between the battery mounting hole 101 and the positive electrode of the battery, a battery positive electrode receiving hole can be formed at the bottom of the hole of the battery mounting hole 101 away from the end face of the battery 2 in a direction away from the battery 2, and the battery mounting hole 101 is suitable for the positive end of the battery 2 to be inserted, and the positive electrode of the battery 2 is inserted into the battery positive electrode receiving hole. Since the positive end of the battery 2 is provided with a positive electrode, and the positive electrode protrudes from the positive end, the battery positive electrode receiving hole is formed at the bottom of the hole of the battery mounting hole 101 away from the end face of the battery 2 in a direction away from the battery 2, that is, the battery positive electrode receiving hole is formed upward from the bottom of the hole of the battery mounting hole 101, and when the positive end of the battery 2 is inserted into the battery mounting hole 101, the positive electrode of the battery 2 is placed in the battery positive electrode receiving hole to protect the positive electrode of the battery.

[0060] In addition, the inner diameter of the battery positive electrode receiving hole should be larger than the outer diameter of the positive electrode of battery 2. After the positive electrode of battery 2 is placed in the battery positive electrode receiving hole, the positive electrode of battery 2 does not contact the inner wall of the battery positive electrode receiving hole. Optionally, the bottom of the battery positive electrode receiving hole does not contact the top of the battery positive electrode. At this time, the inner diameter of the battery mounting hole 101 is larger than the inner diameter of the battery positive electrode receiving hole, and the battery mounting hole 101 and the battery positive electrode receiving hole form a stepped hole structure to match the shape of the positive terminal of battery 2.

[0061] In other embodiments, the negative terminal of the battery 2 can also be inserted into the battery installation hole 101. At this time, the cover 1 and the tray need to be swapped, as long as the structural member 3 can be reliably in contact with the outer wall of the battery 2 shell.

[0062] Of course, in other embodiments, a battery accommodating hole can be provided on the tray 4, and a structural member 3 can be provided on the inner wall of the battery accommodating hole. The structural member 3 can abut against the outer wall of the battery shell 2, which can further reduce the lithium potential of the battery negative electrode and improve the effect of reducing the corrosion of the battery shell.

[0063] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A battery static tooling, characterized in that: include: A cover body (1), wherein at least one battery installation hole (101) is provided on the cover body (1), wherein the battery installation hole (101) is suitable for inserting one end of a battery (2), wherein a structural member (3) is provided on the inner wall of the battery installation hole (101), wherein the structural member (3) is suitable for abutting against the outer wall of the shell of the battery (2), wherein the shell of the battery (2) is a negative electrode, wherein the lithium potential of the structural member (3) is less than the lithium potential of the shell of the battery (2), wherein the lithium potential of the structural member (3) is T, wherein the surface area of ​​the structural member (3) is S, wherein the range of T / S satisfies 0<T / S≤2.9, and the unit of T / S is V / cm 2 .

2. The battery stationary fixture according to claim 1, characterized in that: The potential of the structural member (3) to lithium is 0<T≤2.9V.

3. The battery stationary fixture according to claim 1, characterized in that: The surface area S of the structural member (3) is in the range of 1 cm 2 ≤S≤144.5cm 2 .

4. The battery stationary fixture according to claim 1, characterized in that: The height of the structural member (3) along the depth direction of the battery installation hole (101) is H, the depth of the battery installation hole (101) is d, and the ratio range of H:d is 0.9≤H / d≤1.

5. The battery stationary tooling according to claim 1, characterized in that: The thickness of the structural member (3) along the radial direction of the battery installation hole (101) is I, and the range of the thickness I is 1 mm≤I≤2 mm.

6. The battery stationary tooling according to claim 1, characterized in that: The structural member (3) is an arc-shaped structure arranged along the circumference of the battery installation hole (101), the arc length of the structural member (3) is L, the circumference of the battery installation hole (101) is c, and the ratio range of L:c is 0.07≤L / c≤1.

7. The battery stationary tooling according to claim 6, characterized in that: The arc length L of the structural member (3) is in the range of 10 mm ≤ L ≤ 144 mm.

8. The battery stationary tooling according to claim 1, characterized in that: The structural member (3) is chamfered along the depth direction of the battery installation hole (101) and on one side close to the open end of the battery installation hole (101).

9. The battery stationary tooling according to claim 1, characterized in that: The inner wall of the battery installation hole (101) comprises a side wall and a bottom wall, the structural member (3) is L-shaped, and the structural member (3) is attached to the side wall and the bottom wall of the battery installation hole (101).

10. The battery stationary tooling according to claim 1, characterized in that: A plurality of the structural members (3) are provided, and adjacent structural members (3) are evenly spaced apart.

11. The battery stationary tooling according to claim 1, characterized in that: An even number of the structural members (3) are provided, and the structural members (3) are arranged opposite to each other in pairs.

12. The battery stationary tooling according to claim 1, characterized in that: The cross section of the battery installation hole (101) perpendicular to its depth direction is circular.

13. The battery stationary tooling according to claim 1, characterized in that: The material of the structural component (3) is aluminum.

14. The battery stationary tooling according to any one of claims 1 to 13, characterized in that: It also comprises a tray (4), wherein the tray (4) is suitable for accommodating at least one of the batteries (2), and the cover (1) cooperates with the open end of the tray (4).

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