Battery formation fixture and testing equipment

Abstract

The present invention relates to the field of new energy batteries, and discloses a battery formation fixing device and detection equipment, which can apply a pressing force to the battery from the outside, reduce the expansion of the battery core, prevent the gap between the outer pole pieces of the battery from becoming larger, and make the battery less likely to produce brown spots and black spots and accompanied by lithium precipitation after the air tightness test. The device includes a bottom plate, a first limit assembly, a second limit assembly and an elastic member, the first limit assembly includes two positioning members, the two positioning members are relatively arranged on the bottom plate, and the battery abuts between the two positioning members; the second limit assembly is arranged on the bottom plate and located between the two positioning members, the second limit assembly includes a fixed plate and at least one clamping plate, the fixed plate is fixed relative to the bottom plate, the clamping plate is slidably arranged relative to the bottom plate, and a battery accommodating space is formed between the clamping plate and the fixed plate and between adjacent clamping plates; the elastic member is arranged between the fixed plate and the battery and / or between the clamping plate and the battery, and the area ratio of the elastic member to the clamping plate is in the range of 0.9-1.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a battery formation fixing device and detection equipment. Background Art

[0002] With the continuous development of new energy technologies, 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 power, wind power and solar power stations, as well as in many technical fields such as power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace, etc.

[0003] During the battery manufacturing process, the battery needs to be tested for airtightness (i.e., helium testing) after the sealing pins are welded. The method for airtightness testing is to fill the battery with a certain amount of helium, place the battery in a high-negative-pressure cavity, and determine whether the battery's airtightness is intact by detecting the amount of helium in the cavity. However, during the airtightness test, since the internal air pressure of the battery is approximately -37.5Kpa, while the air pressure in the cavity is -100Kpa, a large pressure difference is formed inside and outside the battery, causing the gas in the battery cell to expand and rely only on the electrode for restraint. However, the restraining force of the electrode is relatively small, and the above-mentioned pressure difference will cause the gap between the outer electrode sheets to become larger, resulting in the obstruction of lithium insertion during the charging process of the battery. The lithium ion transmission distance becomes longer, causing brown spots and black spots on the outer electrode sheets of the battery, accompanied by the problem of lithium plating, resulting in rapid battery capacity cycle decay and affecting battery life. Summary of the Invention

[0004] In view of this, the present invention provides a battery formation fixing device and detection equipment to solve the problem that brown spots and black spots are easily generated on the outer pole pieces of existing batteries after air tightness testing, accompanied by lithium deposition, which affects battery performance.

[0005] In a first aspect, the present invention provides a battery formation fixing device for fixing a battery, the battery formation fixing device comprising:

[0006] base plate;

[0007] A first limiting assembly includes two positioning members, the two positioning members are oppositely arranged on the bottom plate, and the battery abuts between the two positioning members;

[0008] a second limiting assembly, disposed on the base plate and located between the two positioning members, the second limiting assembly comprising a fixed plate and at least one clamping plate, the fixed plate being fixed relative to the base plate, the clamping plate being slidably disposed relative to the base plate, and a battery accommodation space being formed between the clamping plate and the fixed plate, and between adjacent clamping plates;

[0009] An elastic member is disposed between the fixing plate and the battery and / or between the clamping plate and the battery, and an area ratio of the elastic member to the clamping plate is in a range of 0.9-1.

[0010] Beneficial effect: The battery formation fixing device of the present invention can limit the battery by setting the first limiting component and the second limiting component, and the second limiting component can clamp and fix the battery. When the battery is tested for air tightness, due to the limiting effect of the first limiting component and the second limiting component, a pressing force can be applied to the battery from the outside, reducing the expansion of the battery cell and preventing the gap between the outer electrode of the battery from becoming larger, so that the battery is not prone to brown spots, black spots, and problems such as lithium deposition after the air tightness test, thereby improving the battery performance. In addition, the elastic member is used to fill the gap between the splint and the battery, or to fill the gap between the fixing plate and the battery, which can enhance the pressure and limiting effect of the second limiting component on the battery. If the area of ​​the elastic member is too small, it cannot play a role in pressing on the larger side of the battery. By limiting the area ratio of the elastic member to the splint to 0.9-1, the size of the elastic member is more suitable for contacting the battery, thereby enhancing the limiting effect on the battery.

[0011] In a second aspect, the present invention further includes a testing device for battery air tightness testing, wherein the testing device includes the battery formation fixture as described above.

[0012] Because the detection equipment of the present invention includes the battery formation fixing device of the present invention, it has the same beneficial effects as the battery formation fixing device, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 is a schematic diagram of the detection device of the present invention;

[0015] Figure 2 It is a schematic diagram of the partial structure of the battery formation fixing device of the present invention.

[0016] Description of reference numerals:

[0017] 1. Bottom plate; 2. Frame; 3. Fixed plate; 4. Clamp; 5. Elastic part; 6. Positioning part; 7. Clamp; 8. Battery; 9. Chamfer. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying 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 making creative efforts shall fall within the scope of protection of the present invention.

[0019] The following combination Figure 1 and Figure 2 , describing embodiments of the battery formation fixture and detection equipment of the present invention.

[0020] According to an embodiment of the present invention, on the one hand, a battery formation fixing device is provided, comprising: a base plate 1, a first limiting assembly, a second limiting assembly and an elastic member 5, the first limiting assembly having two positioning members 6, the two positioning members 6 being relatively arranged on the base plate 1, the battery 8 being abutted between the two positioning members 6, the second limiting assembly being arranged on the base plate 1 and being located between the two frames 2, the second limiting assembly comprising a fixed plate 3 and at least one clamping plate 4, the fixed plate 3 being fixed relative to the base plate 1, the clamping plate 4 being slidingly arranged relative to the base plate 1, a battery accommodating space being formed between the clamping plate 4 and the fixed plate 3, and between adjacent clamping plates 4, the elastic member 5 being arranged between the fixed plate 3 and the battery 8, and / or between the clamping plate 4 and the battery 8, and the ratio of the area of ​​the elastic member 5 to the clamping plate 4 is in the range of 0.9-1.

[0021] This battery formation fixing device can limit the battery 8 by setting a first limiting component and a second limiting component, and the second limiting component can clamp and fix the battery 8. When the battery 8 is tested for air tightness, due to the limiting effect of the first limiting component and the second limiting component, a compressive force can be applied to the battery 8 from the outside, reducing the expansion of the battery core and preventing the gap between the outer electrode sheets of the battery 8 from becoming larger, so that the battery 8 is not prone to brown spots, black spots, and lithium precipitation after the air tightness test, thereby improving battery performance. In addition, the elastic member 5 is used to fill the gap between the clamping plate 4 and the battery 8, or to fill the gap between the fixing plate 3 and the battery 8, which can enhance the pressure and limiting effect of the second limiting component on the battery 8. If the area of ​​the elastic member 5 is too small, it cannot play a role in pressing the larger side of the battery. By limiting the area ratio of the elastic member 5 to the clamping plate 4 to a range of 0.9-1, the size of the elastic member 5 is more suitable for contacting the battery, thereby enhancing the limiting effect on the battery 8.

[0022] The battery formation fixture of this embodiment is suitable for fixing laminated batteries. In this embodiment, the larger side of the battery refers to the side with a larger outer surface area of ​​the battery, and the smaller side of the battery refers to the side with a smaller outer surface area of ​​the battery.

[0023] The battery formation fixing device of this embodiment can abut the battery 8 in the first direction by setting the first limiting component, so that the battery 8 is limited in the first direction, and can clamp the battery 8 in the second direction by setting the second limiting component, so that the battery 8 is limited in the second direction. Figure 1 The arrows a and a' point to the direction, the second direction is Figure 1 The directions indicated by the arrows b and b' are parallel to the direction in which the clamping plate 4 slides relative to the base plate 1, and the first direction is perpendicular to the second direction. The battery formation fixture of this embodiment can fix the battery 8 and can be used in battery manufacturing, testing, and other processes. In this embodiment, the battery formation fixture is used in the battery airtightness testing process. The first limiting assembly can limit the battery 8 in the first direction, and the second limiting assembly can apply a pressing force to the battery 8 in the second direction, so that the position of the battery 8 is fixed, and it can reduce the expansion of the battery cell and prevent the gap between the outer electrode plates of the battery from increasing.

[0024] Specifically, the base plate 1 is a supporting structure of the battery formation fixture, on which other structures and components of the battery formation fixture can be arranged, and the base plate 1 has a certain structural strength. In this embodiment, the base plate 1 is a flat plate structure suitable for being placed on a platform such as a desktop or an operating table.

[0025] The first limiting assembly is disposed on the base plate 1 and includes two positioning members 6, which are fixed relative to each other on the base plate 1. Specifically, the positioning members 6 are flat-plate structures of uniform size. The two positioning members 6 are perpendicular to the base plate 1 and are arranged parallel to and opposite each other, forming a space between the two positioning members 6. Both the second limiting assembly and the battery 8 can be accommodated in this space.

[0026] Optionally, the distance between the two positioning members 6 should match the size of the battery 8 in the first direction, so that after the battery 8 is placed in the setting space, the two positioning members 6 can abut against the battery 8 to reliably limit the battery 8. Specifically, the two positioning members 6 abut against the smaller side surface of the battery.

[0027] The second limiting assembly is mounted on the base plate 1 and is positioned within the space formed by the two positioning members 6. The second limiting assembly includes a fixed plate 3 and at least one clamping plate 4. The fixed plate 3 is fixed relative to the base plate 1. Since the positioning members 6 are fixed to the base plate 1, the fixed plate 3 is also fixed relative to the positioning members 6. The clamping plate 4 is slidable relative to the base plate 1. Since the positioning members 6 are fixed to the base plate 1, the clamping plate 4 also slides relative to the positioning members 6. Depending on the number of batteries and the need for securing the batteries, one, two, three, or five clamping plates 4 can be provided.

[0028] In this embodiment, one end of the fixing plate 3 is fixed to one of the positioning members 6, and the other end is fixed to the other positioning member 6. Accordingly, one end of the clamping plate 4 is slidably connected to one of the positioning members 6, and the other end is slidably connected to the other positioning member 6. The fixing plate 3 and the clamping plate 4 are arranged in parallel, and both are suitable for abutting the larger side surface of the battery. Because the clamping plate 4 can slide, it can clamp the battery 8 in the second direction under the action of an external force, thereby applying a compressive force to the battery 8.

[0029] In the setting space formed by the two positioning members 6, a battery accommodating space is formed between the clamping plate 4 and the fixed plate 3, and between adjacent clamping plates 4. The battery 8 is suitable for being placed in the battery accommodating space, and the two smaller side surfaces of the battery 8 in the first direction abut against the positioning members 6, and the two larger surfaces of the battery in the second direction abut against the fixed plate 3 or the clamping plate 4, so that the battery 8 is limited and pressed in the battery accommodating space.

[0030] Furthermore, the side area of ​​the clamping plate 4 abutting against the battery 8 is greater than or equal to the side area of ​​the battery 8 .

[0031] In this embodiment, the areas of the fixing plate 3 and the clamping plate 4 should match the larger side surface of the battery. Specifically, the area of ​​the side of the clamping plate 4 abutting the battery 8 is greater than or equal to the side surface area of ​​the battery 8, thereby fully covering the larger side surface of the battery, improving the compression effect and preventing local expansion of the uncompressed portion of the battery.

[0032] The elastic member 5 can be arranged between the fixing plate 3 and the battery 8, or between the clamping plate 4 and the battery 8, or simultaneously between the fixing plate 3 and the battery 8 and between the clamping plate 4 and the battery 8. Specifically, the elastic member 5 is arranged on at least one side inner wall of the battery accommodating space, and the inner wall faces the larger side of the battery. The elastic member 5 is made of elastic material. The elastic member 5 can fill the gap between the clamping plate 4 and the battery 8, as well as the gap between the fixing plate 3 and the battery 8, and can also buffer the battery clamping process to avoid damage to the battery casing. There is no limit to the number of elastic members 5, and they can be arranged on at least one side inner wall of the battery accommodating space, or on both sides of the inner wall of the battery accommodating space.

[0033] The area ratio of the elastic member 5 to the clamping plate 4 is in the range of 0.9-1. Since the elastic member 5 will conform to the larger side of the battery, if the area of ​​the elastic member 5 is too small, it will not effectively perform the pressing function on the larger side of the battery. The elastic member 5 within the above area ratio range is more suitable for fully contacting the battery 8 and improving the retaining effect. For example, the area ratio of the elastic member 5 to the clamping plate 4 can be 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1, etc.

[0034] Furthermore, since the elastic member 5 is in direct contact with the battery casing, if the pores of the elastic member 5 are too large, helium will be trapped, resulting in inaccurate helium detection. If the pores of the elastic member 5 are too small, the helium discharge channel will be blocked, preventing the helium from being discharged smoothly, which will also affect the accuracy of the helium detection. In this embodiment, the elastic member 5 is made of granular rubber. The pores of the elastic member 5 should not be too large or too small. The specific pore size of the elastic member 5 can be set according to needs.

[0035] In addition, if the hardness of the elastic member 5 is too large, the battery casing may be easily damaged, and if the hardness of the elastic member 5 is too small, the buffering effect on the battery 8 may be lost, which may also easily damage the battery. Therefore, in this embodiment, the hardness of the elastic member 5 should not be too large or too small, and the specific hardness of the elastic member 5 can be set as needed.

[0036] In this embodiment, four clamping plates 4 are provided.

[0037] Furthermore, the fixing plate 3 is arranged in the middle of the bottom plate 1, and clamping plates 4 are provided on both sides of the fixing plate 3, so that batteries 8 can be placed and clamped on both sides of the fixing plate 3, thereby increasing the number of fixed batteries and improving detection efficiency.

[0038] In this embodiment, the fixing plate 3 is arranged in the middle position of the base plate 1, and two clamping plates 4 are respectively arranged on both sides of the fixing plate 3. Taking one side of the fixing plate 3 as an example, the fixing plate 3 and a clamping plate 4 form a first battery accommodating space, and the clamping plate 4 and the adjacent clamping plate 4 form a second battery accommodating space. Similarly, on the other side of the fixing plate 3, a third battery accommodating space and a fourth battery accommodating space are formed, so that the battery formation fixing device can fix four batteries at the same time, and the detection efficiency is high.

[0039] A frame 2 is provided on the base plate 1, forming a closed structure. The bottom of the frame 2 is fixed to the base plate 1. Optionally, the base plate 1 and the frame 2 are integrally formed. A positioning member 6 is provided on the inner wall of the frame 2, that is, on the side facing the battery 8.

[0040] like Figure 2 As shown, a positioning member 6 is provided on the side of the frame 2 facing the battery 8. When the battery 8 is placed in the battery receiving space, the positioning member 6 abuts the battery 8. The positioning member 6 can pre-position the battery 8 to prevent the position of the battery 8 from shifting, preparing for subsequent clamping of the battery 8.

[0041] Optionally, the positioning member 6 can be made of an elastic material, such as rubber, and can provide a certain amount of space in the first direction to accommodate batteries 8 of different sizes. Moreover, the positioning member 6 can also provide a certain buffer for the battery 8 to avoid damage to the battery housing during the detection process.

[0042] Furthermore, a chamfer 9 is formed between the upper end surface of the positioning member 6 and a surface of the positioning member 6 facing the battery.

[0043] In this embodiment, the direction "up" refers to Figure 2 The side of the positioning member 6 facing the battery will abut against the battery 8. A chamfer 9 is formed between the upper end surface of the positioning member 6 and the side of the positioning member 6 facing the battery. Specifically, the chamfer 9 is a straight angle. When the battery 8 is placed into the battery storage space, the battery 8 will inevitably contact the angle between the upper end surface of the positioning member 6 and the side of the positioning member 6 facing the battery. The chamfer 9 can avoid bumping into the battery shell and prevent the battery shell from being scratched.

[0044] Furthermore, the second limiting assembly also includes a clamping block 7, and a notch 401 is provided at the corner position between the upper end surface of the clamping plate 4 and the side surface of the clamping plate 4 facing the positioning member 6. The clamping block 7 is arranged at the notch 401, and the sum of the length of the upper end surface of the clamping plate 4 and the length of the upper end surface of the clamping block 7 is equal to or greater than the length of the lower part of the clamping plate 4.

[0045] In this embodiment, in order to facilitate the removal and placement of the battery 8, a notch 401 is provided at the corner between the upper end surface of the clamp 4 and the side of the clamp 4 facing the positioning member 6, so that a person or a tool can reach in and remove the clamp and the battery. In order to improve the limiting clamping effect of the battery 8, a clamping block 7 is provided at the notch 401, and the clamping block 7 can be detachably connected to the clamp 4. In this embodiment, the clamping block 7 is detachably connected to the clamp 4 by bolts. After the clamping block 7 is installed in the notch 401, the clamping block 7 can participate in clamping the battery 8, preventing local expansion of the unsqueezed part, and improving the clamping effect.

[0046] The sum of the length of the upper end surface of the clamping plate 4 and the length of the upper end surface of the clamping block 7 is equal to or greater than the length of the lower part of the clamping plate 4, so that the upper and lower parts of the battery 8 can be reliably clamped, so that the limiting effect on the battery is better.

[0047] Optionally, an elastic member 5 may be provided between the clamping block 7 and the battery 8 to further protect the battery housing.

[0048] Furthermore, the battery formation fixing device also includes a guide assembly, which is arranged on the frame 2 and the splint 4, and the splint 4 slides relative to the frame 2 through the guide assembly; or the guide assembly is arranged on the base plate 1 and the splint 4, and the splint 4 slides relative to the base plate 1 through the guide assembly.

[0049] In this embodiment, the guide assembly includes a slide rail and a slide groove. The slide rail is provided on one of the frame 2 and the clamping plate 4, and the slide groove is provided on the other. The slide rail is adapted to be embedded in the slide groove and slide along the slide groove. Specifically, at least one frame 2 is provided with a slide rail on the side facing the battery 8. One frame 2 may be provided with a slide rail on the side facing the battery 8, or both frames 2 may be provided with a slide rail on the side facing the battery 8. The clamping plate 4 is provided with a slide groove on the end surface facing the frame 2. The slide rail cooperates with the slide groove to enable the clamping plate 4 to slide relative to the frame 2.

[0050] Of course, in other embodiments, depending on the specific space requirements, guide assemblies can also be provided on both the base plate 1 and the clamping plate 4, with the clamping plate 4 sliding relative to the base plate 1 via the guide assemblies. The guide assemblies include a rail and a slot. The rail is provided on one of the base plate 1 and the clamping plate 4, while the slot is provided on the other. The rail is adapted to fit into and slide along the slot. For example, the slot is provided on the base plate 1, and the bottom of the clamping plate 4 is provided with a rail. The rail and slot cooperate to enable the clamping plate 4 to slide relative to the base plate 1.

[0051] Furthermore, the battery formation and fixing device further includes a driving mechanism for driving the clamping plate 4 to move toward the fixing plate 3 to fix the battery 8 .

[0052] The driving end of the driving mechanism is connected to the side of the outermost clamping plate 4 away from the battery. The driving mechanism can apply a pressing force to the clamping plate 4 so that the clamping plate 4 presses the battery 8, thereby improving the limiting and pressing effect.

[0053] The driving mechanism can adopt a cylinder. The driving mechanism can apply a restraining pressure to the clamping plate 4. The restraining pressure that the driving mechanism can provide is 600Kgf.

[0054] This embodiment further provides a testing device for battery air tightness testing, and the testing device includes the above-mentioned battery formation fixing device.

[0055] like Figure 1 The figure shows the overall structure of the testing device. Specifically, the testing device includes a housing, a bottom plate 1 of the battery formation fixture serving as the bottom structure of the housing, a frame 2 of the battery formation fixture serving as the side wall structure of the housing, and a second stopper assembly and battery 8 adapted to be placed within the housing. Of course, in order to perform battery airtightness testing, the testing device also includes other necessary testing devices and structures, which will not be detailed here.

[0056] The following describes the process of battery fixing and airtightness testing by the testing device of this embodiment with reference to the accompanying drawings:

[0057] First, place two batteries 8 to be tested in the first battery accommodating space and the third battery accommodating space respectively, push the splint 4 close to the batteries 8 to be tested, then place the other two batteries 8 to be tested in the second battery accommodating space and the fourth battery accommodating space respectively, and then push the outer splint 4 close to the batteries 8 to be tested.

[0058] The driving mechanism applies a clamping force (the restraining pressure is 600 kgf) to the outermost clamping plate 4, and the clamping plate 4 applies the clamping force to the battery housing. At this time, there is granular glue (elastic member 5) between the battery 8 and the clamping plate 4, and there is also granular glue between the battery 8 and the fixing plate 3.

[0059] After that, the box is closed and the air tightness test (helium test) is started. The box is evacuated to -100KPa using a vacuum pump. The upper limit alarm time is 30s. That is, if the air pressure in the box is not pumped to -100KPa within 30s, the surface of the battery 8 to be tested has a large leak, and an alarm will be triggered. If the air pressure in the box can be pumped to -100KPa within 30s, the vacuum pump is turned off, the helium test valve is opened, the gas in the box is pumped into the helium detector and sent to the mass spectrometer for battery micro-leak rate detection.

[0060] During the airtightness test, clamping plate 4 consistently applies pressure to battery 8, and positioning member 6 consistently holds the battery in place, preventing gas expansion within the battery cells and preventing loose fit of the outer electrode sheets. Consequently, this prevents lithium insertion during subsequent charging and prevents brown spots on the outer electrode sheets. The testing device of this embodiment effectively mitigates brown spots, black spots, and lithium deposition at the battery's fixed capacity (70% SOC) after airtightness testing, thereby improving battery cell performance.

[0061] Although the embodiments of the present invention have been described with reference to 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. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A battery formation fixing device, characterized in that: Used to fix a battery (8), the battery formation fixing device comprises: Bottom plate (1); A first limiting assembly, comprising two positioning members (6), the two positioning members (6) being arranged opposite to each other on the bottom plate (1), and the battery (8) being abutted between the two positioning members (6); a second limiting assembly, arranged on the bottom plate (1) and located between the two positioning members (6), the second limiting assembly comprising a fixing plate (3) and at least one clamping plate (4), the fixing plate (3) being fixed relative to the bottom plate (1), the clamping plate (4) being slidably arranged relative to the bottom plate (1), and a battery accommodating space being formed between the clamping plate (4) and the fixing plate (3), and between adjacent clamping plates (4); An elastic member (5) is arranged between the fixing plate (3) and the battery (8), and / or between the clamping plate (4) and the battery (8), wherein the ratio of the area of ​​the elastic member (5) to the area of ​​the clamping plate (4) is in the range of 0.9-1; The second limiting assembly further comprises a clamping block (7), a notch (401) being provided at a corner position between an upper end surface of the clamping plate (4) and a side surface of the clamping plate (4) facing the positioning member (6), and the clamping block (7) is detachably arranged at the notch (401).

2. The battery formation fixing device according to claim 1, characterized in that: The fixing plate (3) is arranged in the middle of the bottom plate (1), and the clamping plates (4) are arranged on both sides of the fixing plate (3).

3. The battery formation fixing device according to claim 1, characterized in that: A chamfer (9) is provided between the upper end surface of the positioning member (6) and the side surface of the positioning member (6) facing the battery (8).

4. The battery formation fixing device according to claim 1, characterized in that: The side area of ​​the clamping plate (4) abutting against the battery (8) is greater than or equal to the side area of ​​the battery (8).

5. The battery formation fixing device according to claim 1, characterized in that: The elastic member (5) is made of granular rubber.

6. The battery formation fixing device according to claim 1, characterized in that: The sum of the length of the upper end surface of the clamping plate (4) and the length of the upper end surface of the clamping block (7) is equal to or greater than the length of the lower portion of the clamping plate (4).

7. The battery formation fixing device according to claim 1, characterized in that: The bottom plate (1) is provided with a frame (2), the positioning member (6) is arranged on the inner wall of the frame (2), and the battery formation fixing device further comprises a guide assembly, the guide assembly is arranged on the frame (2) and the clamping plate (4), and the clamping plate (4) slides relative to the frame (2) via the guide assembly.

8. The battery formation fixing device according to claim 1, characterized in that: It also comprises a guide assembly, wherein the guide assembly is arranged on the base plate (1) and the clamping plate (4), and the clamping plate (4) slides relative to the base plate (1) via the guide assembly.

9. The battery formation fixing device according to any one of claims 1 to 8, characterized in that: It also includes a driving mechanism for driving the clamping plate (4) to move toward the fixing plate (3) to fix the battery (8).

10. A detection device, characterized in that: Used for battery air tightness detection, the detection equipment comprises the battery formation fixture as described in any one of claims 1-9.

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