A lithium battery endurance detection device and method

Abstract

The present invention relates to the technical field of lithium battery life detection, and in particular, provides a lithium battery life detection device and method. The lithium battery life detection device includes a base frame, the base frame is circular, and an annular weight reduction groove is provided on the base frame, so that the base frame is divided into a first bottom plate part and a second bottom plate part located in the inner periphery of the weight reduction groove, and a detection seat is installed on the first bottom plate part of the inner periphery, and a detection terminal port is provided on the cover plate, and the detection terminal port is used to insert and place a light bulb, and positive and negative contacts are provided between the detection seat and the detection terminal port; the negative electrode sheet of the high-power light bulb is on top of the negative electrode pin, and the positive and negative electrodes of the light bulb form a path and emit light, and the high-power light bulb is used to detect the loss of these lithium batteries and time and observe the life time of these lithium batteries when used in combination.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery life detection, and in particular to a lithium battery life detection device and method. Background Art

[0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. In order to complete the battery life test of batteries with different output strengths, application number 202210127786.8 discloses a lithium battery life detection device, which consists of an external rectangular box body and multiple battery placement ports arranged in the box body, as well as multiple tightening structures arranged on these battery placement ports.

[0003] From a structural point of view, the existing technology is bulky. After the battery is placed in the placement port, each tightening structure needs to be adjusted to fix the battery. The assembly time during testing is long and the efficiency is low. It is well known that lithium batteries do not work alone in application scenarios, but multiple lithium batteries are connected together to provide battery life for the scene. The existing technology cannot splice batteries of the same model together to simulate the battery life, so its battery life detection method needs to be improved. Summary of the invention

[0004] In order to solve the above problems, the present invention provides the following technical solutions:

[0005] A lithium battery life detection device comprises a base frame, the base frame is circular, an annular weight-reducing groove is provided on the base frame, so that the base frame is divided into a first bottom plate portion located inside the weight-reducing groove and a second bottom plate portion located outside the weight-reducing groove, a detection seat is installed on the first bottom plate portion of the inner circumference, a cover plate is detachably installed on the top of the detection seat, a detection terminal port is provided on the cover plate, the detection terminal port is used to insert a light bulb, and positive and negative contacts are provided between the detection seat and the detection terminal port;

[0006] The second bottom plate portion of the periphery is connected with an upward vertical connecting rod, the top end of the connecting rod is connected with a lithium battery placement seat, and the arc-shaped ends of the lithium battery placement seat are provided with openings;

[0007] A metal column vertically extending upward is provided on the first bottom plate portion of the inner periphery, and the metal column vertically enters the detection seat upward, and a negative electrode pin is fixed on the metal column, and the negative electrode pin extends from the bottom of the detection seat toward the periphery and then enters into an opening at one end of the lithium battery placement seat; an arc-shaped adjustment groove is provided on the inner side of the top of the lithium battery placement seat along its arc-shaped contour, and a positive electrode pin is provided on the top of the cover plate, one end of the positive electrode pin enters into the adjustment groove, and the other end of the positive electrode pin is connected to the positive electrode contact from the top surface of the cover plate;

[0008] The lithium battery placement seat is a rubber cover, which is located above the second bottom plate portion and is bent along the circular contour of the second bottom plate portion. A plurality of heat dissipation holes are opened along the arc contour of the lithium battery placement seat.

[0009] As further preferred, the positive and negative contacts include a positive contact filled on the detection terminal opening, and a negative contact extending upward from the bottom of the detection seat to below the positive contact.

[0010] As further preferred, the positive electrode contact is cylindrical, and an internal thread is provided on the inner wall of the cylinder of the positive electrode contact.

[0011] As a further preference, the end of the negative electrode contact entering the lithium battery placement seat from the opening is a baffle having a cross-sectional shape consistent with the inner cavity of the lithium battery placement seat, and the circular contour of the baffle is consistent with the circular cross-sectional contour of the lithium battery placement seat.

[0012] As a further preferred embodiment, the positive electrode pin is a composite part, consisting of a first connecting part connected to the cylindrical top end of the positive electrode contact and a second connecting part connected to the first connecting part, the positive electrode contact is transferred to the cover plate, a hinge port is provided at the end of the second connecting part, a positive electrode contact pin is hinged on the hinge port, the hinge port is located outside the lithium battery placement seat, the positive electrode contact pin extends into the lithium battery placement seat through the adjustment groove, the first connecting part can rotate with the positive electrode contact on the cover plate, so that the positive electrode contact pin can adjust the distance relative to the baffle in the lithium battery placement seat.

[0013] As further preferred, the first connecting part is a tube fitting, the second connecting part is a tube fitting, the tube cavities of the first connecting part and the second connecting part are connected, the hinge joint is connected to the tube cavity of the second connecting part, and a tension spring is connected between the tube cavity of the second connecting part and the positive contact pin.

[0014] As a further preferred embodiment, a limiting plate is welded on the top surface of the cover plate, the limiting plate is away from the rotation path of the positive pin, an arc-shaped bent rod is welded on the limiting plate and passes through the first connecting part, a limiting nut is welded at the end of the bent rod, the bent rod is sleeved with a bending spring, and both ends of the bending spring are elastically supported between the first connecting part and the limiting plate.

[0015] The present invention also provides a method for using a lithium battery endurance detection device, comprising the following steps:

[0016] The motor is fixed in the detection seat,

[0017] The positive and negative terminals of the motor are welded to the negative contact and the positive contact respectively, and a through hole is opened on the inner peripheral first bottom plate part so that the action axis of the motor extends from the through hole to the outside of the bottom frame;

[0018] A fixing plate is installed on one end of the action shaft of the motor extending out of the base frame, and the fixing plate is fixed on the workbench.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. You can connect the positive and negative ends of multiple lithium batteries together in sequence and then put them into the lithium battery holder from the open end in sequence. Adjust the curvature of the lithium battery holder according to the number of lithium batteries to ensure that the positive and negative ends of the batteries are butted together. The negative end of the first battery is connected to the baffle, and the positive end of the last battery is connected to the positive pin. Replace the high-power light bulb and install it on the positive contact. The negative electrode of the high-power light bulb is on the negative pin. The positive and negative electrodes of the light bulb form a pathway and emit light. The high-power light bulb is used to detect the loss of these lithium batteries and to observe the battery life of these lithium batteries when used in combination.

[0021] 2. After use, all lithium batteries in the lithium battery placement seat are taken out, and the lithium battery placement seat quickly returns to an arc-shaped state, which is convenient for quick storage along with the bottom frame, thus saving storage space compared with the prior art.

[0022] 3. A large number of heat dissipation holes are opened on the lithium battery placement seat. When the lithium battery works in the lithium battery placement seat, the heat generated is released outward through these heat dissipation holes. Compared with the heat dissipation method through fans and water pumps in the prior art, while meeting the heat dissipation of the lithium battery, the heat dissipation structure is simpler. In addition, the setting of these heat dissipation holes also greatly improves the flexibility of the lithium battery placement seat, making it more flexible to use when multiple lithium batteries are loaded to test the battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a lithium battery endurance detection device under a first viewing angle provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a lithium battery endurance detection device under a second viewing angle provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a lithium battery endurance detection device under a third viewing angle provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a lithium battery endurance detection device provided by an embodiment of the present invention after being cut open at a fourth viewing angle;

[0027] Figure 5 A schematic diagram of a lithium battery endurance detection device provided by an embodiment of the present invention after being cut open at a fifth viewing angle;

[0028] Figure 6 A lithium battery endurance detection device provided in an embodiment of the present invention comprises Figure 5 An enlarged schematic diagram of part A is shown.

[0029] In the figure: 1. chassis; 2. weight reduction groove; 3. first bottom plate part; 4. second bottom plate part; 5. detection seat; 6. cover plate; 7. detection terminal port; 8. connecting rod; 9. lithium battery placement seat; 10. metal column; 11. negative electrode pin; 12. adjustment groove; 13. positive electrode pin; 14. heat dissipation hole; 15. positive electrode contact; 16. negative electrode contact; 17. baffle; 18. first connecting part; 19. second connecting part; 20. hinge interface; 21. positive electrode contact pin; 22. tension spring; 23. limit plate; 24. bending rod; 25. limit nut; 26. bending spring; 28. through hole. DETAILED DESCRIPTION

[0030] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0031] In one embodiment, Figure 1-Figure 6 As shown: This embodiment provides a lithium battery life detection device, including a base frame 1, the base frame 1 is circular, and an annular weight-reducing groove 2 is provided on the base frame 1, so that the base frame 1 is divided into a first bottom plate portion 3 located inside the weight-reducing groove 2 and a second bottom plate portion 4 located outside the weight-reducing groove 2, a detection seat 5 is installed on the first bottom plate portion 3 inside the first bottom plate portion 3, a cover plate 6 is detachably installed on the top of the detection seat 5, a detection terminal port 7 is provided on the cover plate 6, and the detection terminal port 7 is used to insert a light bulb, and positive and negative contacts are provided between the detection seat 5 and the detection terminal port 7;

[0032] The outer second bottom plate portion 4 is connected with an upward vertical connecting rod 8, the top of the connecting rod 8 is connected with a lithium battery placement seat 9, and the arc-shaped ends of the lithium battery placement seat 9 are provided with openings;

[0033] A metal column 10 is provided on the first bottom plate portion 3 of the inner periphery, and the metal column 10 vertically extends upward into the detection seat 5. A negative electrode pin 11 is fixed on the metal column 10, and the negative electrode pin 11 extends from the bottom of the detection seat 5 toward the periphery and then enters into an opening at one end of the lithium battery placement seat 9; an arc-shaped adjustment groove 12 is provided on the inner side of the top of the lithium battery placement seat 9 along its arc-shaped contour, and a positive electrode pin 13 is provided on the top of the cover plate 6, and one end of the positive electrode pin 13 enters into the adjustment groove 12, and the other end of the positive electrode pin 13 is connected to the positive electrode contact from the top surface of the cover plate 6;

[0034] The positive and negative contacts include a positive contact 15 filled on the detection terminal opening 7 , and a negative contact 16 extending upward from the bottom of the detection seat 5 to below the positive contact 15 .

[0035] The positive contact 15 is cylindrical, and an internal thread for mounting a light bulb is provided on the inner wall of the cylinder of the positive contact 15 .

[0036] During the test, a single lithium battery is placed into the lithium battery holder 9 from one end of the opening, and the lithium battery holder 9 is stood up sideways with the base frame 1, so that the lithium battery can reach the baffle 17 at one end of the negative electrode pin 11 along the tube cavity of the lithium battery holder 9. The baffle 17 is connected to the negative electrode terminal of the lithium battery as the negative terminal, and the negative current is led to the metal column 10 through the negative electrode pin 11. Similarly, the positive electrode pin 13 is extended into the lithium battery holder 9 at one end as the positive terminal and connected to the positive terminal of the lithium battery. The negative current With the metal column 10 as the intermediate transition, the negative current flows upward along the negative pin 11 in the detection seat 5 to the bottom side of the positive contact 15. The positive current flows directly to the positive contact 15 through the positive pin 13. The light bulb is installed in the positive contact 15, so that the positive electrode piece of the light bulb is installed on the positive contact 15 through the internal threaded hole, and the negative electrode piece of the light bulb is on the negative pin 11. The positive and negative poles of the light bulb form a pathway and emit light. The light bulb is used to detect the loss of the lithium battery and to observe the battery life of the single lithium battery.

[0037] According to the above detection principle, the positive and negative ends of multiple lithium batteries can be connected together in sequence and then placed in the lithium battery placement seat 9 from one end of the opening in sequence. The curvature of the lithium battery placement seat 9 is adjusted according to the number of lithium batteries to ensure that the positive and negative ends of the batteries are butted together. The negative end of the first battery is connected to the baffle 17, and the positive end of the last battery is connected to the positive pin 13. A high-power light bulb is replaced, and the high-power light bulb is installed on the positive contact 15. The negative electrode sheet of the high-power light bulb is on the negative electrode pin 11. The positive and negative electrodes of the light bulb form a path and emit light. The high-power light bulb is used to detect the loss of these lithium batteries, and the battery life of these lithium batteries is observed by timing. Compared with the prior art, which can only detect the battery life of a single or single type of lithium battery, the present invention is superior to the prior art. After use, all lithium batteries in the lithium battery placement seat 9 are taken out, and the lithium battery placement seat 9 quickly returns to an arc state, which is convenient for quick storage with the chassis 1, saving storage space compared to the prior art.

[0038] The lithium battery placement seat 9 is a rubber cover. Therefore, when the lithium battery is placed in the lithium battery placement seat 9, the lithium battery placement seat 9 can automatically change the length and curvature according to the length of a single lithium battery or the length of multiple lithium batteries docked together. Compared with the box structure in the prior art, it can not only detect the battery life of multiple lithium batteries at the same time, but also be more flexible in application. The lithium battery placement seat 9 is located above the second bottom plate part 4 and is bent along the circular contour of the second bottom plate part 4. A number of heat dissipation holes 14 are opened along the arc contour of the lithium battery placement seat 9. The setting of these heat dissipation holes 14 is perfectly close to the lithium battery. When the lithium battery works in the lithium battery placement seat 9, the heat generated is released outward through these heat dissipation holes 14. Compared with the heat dissipation method of the prior art through fans and water pumps, while satisfying the heat dissipation of the lithium battery, the heat dissipation structure is simpler, and the setting of these heat dissipation holes 14 also greatly improves the flexibility of the lithium battery placement seat 9, making it more flexible to use when multiple lithium batteries are loaded to detect the battery life.

[0039] The end of the negative contact 16 that enters the lithium battery placement seat 9 from the opening is a baffle 17 that has the same cross-sectional shape as the inner cavity of the lithium battery placement seat 9 , and the circular contour of the baffle 17 is consistent with the circular cross-sectional contour of the lithium battery placement seat 9 .

[0040] like Figures 4 to 6As shown, the positive electrode pin 13 is a composite part, which consists of a first connecting part 18 connected to the cylindrical top end of the positive electrode contact 15 and a second connecting part 19 connected to the first connecting part 18. The positive electrode contact 15 is transferred to the cover plate 6. A hinge port 20 is provided at the end of the second connecting part 19. A positive electrode contact pin 21 is hinged on the hinge port 20. The hinge port 20 is located outside the lithium battery placement seat 9. The positive electrode contact pin 21 extends into the lithium battery placement seat 9 through the adjustment slot 12. The first connecting part 18 can rotate with the positive electrode contact 15 on the cover plate 6, so that the positive electrode contact pin 21 can adjust the distance relative to the baffle 17 in the lithium battery placement seat 9. When the light bulb is fixed on the positive contact 15 through the threaded hole, it is equivalent to connecting the positive terminal of the light bulb to the positive contact 15, and at the same time, the negative terminal of the light bulb is pressed on the negative pin 11 on the bottom side of the positive contact 15. In addition, when the lithium battery is placed in the lithium battery placement seat 9 along the tube cavity, the negative terminal of the lithium battery will first hit the positive contact pin 21 in order to be pre-connected with the negative baffle 17, so that the positive contact pin 21 is deflected toward one side of the baffle 17. By analogy, if the number of lithium batteries is large, the positive pin 13 is first deflected to the side away from the baffle 17 to increase the distance between the baffle 17 and the positive pin 13, and then multiple lithium batteries are sequentially loaded into the lithium battery placement seat 9 through the above method, and the positive contact pin 21 is finally deflected back to the positive end and contacts the positive terminal of the last lithium battery. When each lithium battery is placed in the lithium battery placement seat 9, the lithium battery will hit the positive contact pin 21, causing the positive contact pin 21 to deflect toward one side of the baffle 17, so that the positive and negative terminals of these lithium batteries can be connected in sequence in the lithium battery placement seat 9.

[0041] like Figure 5 , Figure 6 As shown, the first connection part 18 is a pipe fitting, and the second connection part 19 is a pipe fitting. The first connection part 18 and the second connection part 19 have tube cavities that are connected, and the hinge 20 is connected to the tube cavity of the second connection part 19. A tension spring 22 is connected between the tube cavity of the second connection part 19 and the positive contact pin 21. When the positive contact pin 21 is hit by the lithium battery, the tension spring 22 will be stretched after each deflection toward the direction of the baffle 17. After the lithium battery passes the positive contact pin 21 and docks with the positive and negative terminals of the previous lithium battery, the tension spring 22 rebounds quickly and uses the rebound force to quickly pull the positive contact pin 21 back, so that the positive contact pin 21 is against the positive terminal of the last lithium battery, and the rebound force is used to ensure that the positive contact pin 21 is close to the positive terminal of the lithium battery. It can be seen that the method of automatically pressing the positive contact pin 21 to restrict the lithium battery in the lithium battery placement seat 9 does not require manual adjustment of the top tightening structure to fix the battery compared to the prior art. The fixing structure of the present invention is simple and easy to operate.

[0042] A limit plate 23 is welded on the top surface of the cover plate 6. The limit plate 23 is away from the rotation path of the positive pin 13. A curved rod 24 is welded on the limit plate 23 and penetrates the first connection part 18. A limit nut 25 is welded at the end of the curved rod 24. The curved rod 24 is sleeved with a bending spring 26. The two ends of the bending spring 26 are elastically supported between the first connection part 18 and the limit plate 23. The more lithium batteries are placed in the lithium battery placement seat 9, the greater the contact force between the positive terminal of the last lithium battery and the positive contact pin 21, so that the positive contact pin 21 deflects with the second connection part 19, and the second connection part 19 deflects with the first connection part 18, which not only increases the space in the lithium battery placement seat 9, but also uses the elastic force provided by the bending spring 26 to the first connection part 18 to ensure that the positive contact pin 21 and the positive terminal of the last lithium battery are close together, ensuring that the positive current is effectively supplied to the positive contact pin 21.

[0043] The present invention also provides a method for using a lithium battery endurance detection device, comprising the following steps:

[0044] Fixing the motor in the detection seat 5;

[0045] The positive and negative terminals of the motor are welded to the negative contact 16 and the positive contact 15 respectively, and a through hole 28 is opened on the inner first bottom plate portion 3 so that the actuating shaft of the motor extends from the through hole 28 to the outside of the bottom frame 1;

[0046] A fixing plate is installed on one end of the motor's action shaft extending outside the chassis 1, and the fixing plate is fixed on the workbench. A motor is used to replace a light bulb as a loss element for detecting the battery life of a lithium battery. After placing a single or multiple lithium batteries in the lithium battery placement seat 9, the positive and negative ends of the lithium battery are respectively connected to the positive and negative poles of the motor in the detection seat 5, and the motor is powered on and rotates until the motor stops rotating. This time is recorded, and the battery life of the lithium battery is known based on this time. In this method, the action shaft of the motor rotates, and the action shaft of the motor is used to rotate the entire lithium battery battery life detection device, so that the airflow enters the lithium battery placement seat 9 through the heat dissipation holes 14 and the adjustment groove 12, and directly acts on the lithium battery, so that the lithium battery quickly releases heat. This heat dissipation method uses the motor as a loss, and also uses the rotational power of the motor to be applied to the entire device to efficiently dissipate heat in the lithium battery placement seat 9, so it is superior to the prior art.

[0047] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0048] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery endurance detection device, characterized in that: The invention comprises a base frame (1), wherein the base frame (1) is circular and is provided with an annular weight-reducing groove (2), so that the base frame (1) is divided into a first bottom plate portion (3) located inside the weight-reducing groove (2) and a second bottom plate portion (4) located outside the weight-reducing groove (2); a detection seat (5) is installed on the first bottom plate portion (3) of the inner periphery; a cover plate (6) is detachably installed on the top of the detection seat (5); a detection terminal opening (7) is opened on the cover plate (6); the detection terminal opening (7) is used to insert a light bulb; positive and negative contacts are provided between the detection seat (5) and the detection terminal opening (7); an upwardly vertical connecting rod (8) is connected to the second bottom plate portion (4) of the outer periphery; a lithium battery placement seat (9) is connected to the top of the connecting rod (8); the arc-shaped ends of the lithium battery placement seat (9) are provided with openings; an upwardly vertical metal A column (10) is provided, wherein the metal column (10) vertically enters the detection seat (5) upwards, and a negative electrode pin (11) is fixed on the metal column (10), and the negative electrode pin (11) extends from the bottom of the detection seat (5) toward the periphery and then enters into an opening at one end of the lithium battery placement seat (9); an arc-shaped adjustment groove (12) is provided on the inner side of the top of the lithium battery placement seat (9) along its arc-shaped contour, and a positive electrode pin (13) is provided on the top of the cover plate (6), and one end of the positive electrode pin (13) enters into the adjustment groove (12), and the other end of the positive electrode pin (13) is connected to the positive electrode contact from the top surface of the cover plate (6); the lithium battery placement seat (9) is a rubber cover, and the lithium battery placement seat (9) is located above the second bottom plate portion (4) and is bent along the circular contour of the second bottom plate portion (4), and a plurality of heat dissipation holes (14) are provided along the arc-shaped contour of the lithium battery placement seat (9).

2. A lithium battery endurance detection device according to claim 1, characterized in that: The positive and negative contacts include a positive contact (15) filled on the detection terminal opening (7), and a negative contact (16) extending upward from the bottom of the detection seat (5) to below the positive contact (15).

3. A lithium battery endurance detection device according to claim 2, characterized in that: The positive electrode contact (15) is cylindrical, and an internal thread is provided on the inner wall of the cylinder of the positive electrode contact (15).

4. A lithium battery endurance detection device according to claim 3, characterized in that: The end of the negative electrode contact (16) that enters the lithium battery placement seat (9) from the opening is a baffle (17) having a cross-sectional shape consistent with the inner cavity of the lithium battery placement seat (9), and the circular contour of the baffle (17) is consistent with the circular cross-sectional contour of the lithium battery placement seat (9).

5. A lithium battery endurance detection device according to claim 4, characterized in that: The positive electrode pin (13) is a composite part, which is composed of a first connection part (18) connected to the cylindrical top end of the positive electrode contact (15) and a second connection part (19) connected to the first connection part (18). The positive electrode contact (15) is connected to the cover plate (6). A hinge joint (20) is provided at the end of the second connection part (19). A positive electrode contact pin (21) is hingedly connected to the hinge joint (20). The hinge joint (20) is located outside the lithium battery placement seat (9). The positive electrode contact pin (21) extends into the lithium battery placement seat (9) through the adjustment groove (12). The first connection part (18) can rotate with the positive electrode contact (15) on the cover plate (6), so that the distance of the positive electrode contact pin (21) in the lithium battery placement seat (9) can be adjusted relative to the baffle (17).

6. A lithium battery endurance detection device according to claim 5, characterized in that: The first connecting part (18) is a tube, the second connecting part (19) is a tube, the tube cavities of the first connecting part (18) and the second connecting part (19) are in communication, the hinge joint (20) is in communication with the tube cavity of the second connecting part (19), and a tension spring (22) is connected between the tube cavity of the second connecting part (19) and the positive contact pin (21).

7. A lithium battery endurance detection device according to claim 6, characterized in that: A limit plate (23) is welded on the top surface of the cover plate (6), the limit plate (23) being away from the rotation path of the positive electrode pin (13), a curved rod (24) which is welded on the limit plate (23) and extends through the first connecting portion (18), a limit nut (25) is welded at the end of the curved rod (24), the curved rod (24) is sleeved with a curved spring (26), and both ends of the curved spring (26) are elastically supported between the first connecting portion (18) and the limit plate (23).

8. A method for using a lithium battery endurance detection device, applicable to the lithium battery endurance detection device as claimed in claim 2, characterized in that: The following steps are involved: The motor is fixed in the detection seat (5). The positive and negative terminals of the motor are respectively welded to the negative contact (16) and the positive contact (15), and a through hole (28) is opened on the inner peripheral first bottom plate portion (3) so that the actuating shaft of the motor extends from the through hole (28) to the outside of the bottom frame (1); A fixing plate is installed on one end of the action shaft of the motor extending outside the base frame (1), and the fixing plate is fixed on the workbench.

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