A device and method for predicting the service life of an energy storage battery

Abstract

The present invention discloses a device and method for predicting the service life of an energy storage battery, and relates to the field of battery testing technology. A device for predicting the service life of an energy storage battery comprises a base, and further comprises: a support column, rotatably connected to the top of the base, wherein the outer wall of the support column is fixedly connected to a circumferentially distributed cross bar, a storage box is slidably mounted on the cross bar, an outer cover is mounted in the port of the storage box, a temperature control device is mounted on the storage box, a driving part for driving the support column to rotate is provided on the base; a pushing component is provided on the outer wall of the support column, and the pushing component is used to drive the storage box to intermittently approach or move away from the support column; the present invention enables the simulated battery to work in various complex working environments, makes the battery charging and discharging environment more consistent with the actual situation, and makes the life prediction result closer to the actual situation.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery testing, and in particular relates to a device for predicting the service life of an energy storage battery. Background Art

[0002] Energy storage batteries, devices that store electrical energy and release it when needed, are widely used in renewable energy generation, electric vehicles, and grid peak regulation. Their core function is to charge and discharge through electrochemical reactions. However, over time, battery performance gradually degrades, primarily manifesting as reduced capacity (i.e., reduced stored energy) and increased internal resistance (impacting charge and discharge efficiency). Therefore, accurately predicting the service life of energy storage batteries is crucial.

[0003] In the prior art, when predicting the service life of a battery, it is necessary to conduct charge and discharge experiments on multiple sample batteries to obtain experimental data of multiple charge and discharge cycles of each sample battery. By conducting charge and discharge experiments on multiple sample batteries, the aging characteristic data of the sample batteries are obtained. However, during actual use of the battery, the degree of aging and energy decay varies depending on the external environment. For example, a battery installed in a car is often affected by the movement of the car and various bumps. External factors such as movement and bumps will cause uneven distribution of the electrolyte inside the battery, which will affect the battery life. However, the prior art cannot predict the service life of batteries under different environments and has obvious limitations, resulting in a large gap between the predicted life results and the actual life results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device for predicting the service life of an energy storage battery that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A device for predicting the service life of an energy storage battery includes a base and also includes: a support column rotatably connected to the top of the base, wherein the outer wall of the support column is fixedly connected to a circumferentially distributed cross bar, a storage box is slidably mounted on the cross bar, an outer cover is mounted in the port of the storage box, a temperature control device is mounted on the storage box, a driving part for driving the support column to rotate is provided on the base; and a pushing component is arranged on the outer wall of the support column, the pushing component is used to drive the storage box to intermittently approach or move away from the support column.

[0007] Preferably, the driving part includes a driving motor fixedly mounted on the base, the lower end of the support column is fixedly connected to a ring frame, the lower end of the ring frame is fixedly mounted with a ring gear, and the output shaft of the driving motor is fixedly mounted with a driving gear meshing with the ring gear.

[0008] Preferably, the pushing component includes a reciprocating screw rotatably connected to the outer wall of the support column, the reciprocating screw is arranged parallel to the cross bar, the outer wall of the reciprocating screw is installed with a reciprocating slide slidably connected to the cross bar, the storage box is fixedly connected to the reciprocating slide, and the base is provided with a linkage part that drives the reciprocating screw to rotate.

[0009] Furthermore, the linkage part includes a driven gear fixedly mounted on the end of the reciprocating screw, an annular cover fixedly connected to the base, an annular plate fixedly connected to the upper port of the annular cover, and a plurality of circumferentially distributed arc-shaped racks fixedly mounted on the annular plate. When the reciprocating screw rotates following the support column, the driven gear will engage with the plurality of arc-shaped racks in sequence.

[0010] Preferably, a transfer column is fixedly connected to the base, the support column is rotatably connected to the transfer column, a plurality of battery detectors are fixedly installed around the transfer column, the connecting wires of the battery detectors extend into the transfer column, and the storage box is fixedly connected to a wire extending into the support column, and the wire and the connecting wire are connected by a connecting assembly.

[0011] Preferably, a longitudinal groove is provided on the inner bottom of the storage box, a lifting block is longitudinally slidably installed in the longitudinal groove, a hollow box located inside the storage box is installed on the top of the lifting block, an inner cover plate is installed in the opening of the hollow box, and a shaking part for driving the lifting block to move up and down is provided on the support column.

[0012] Furthermore, the shaking part includes an upper protrusion fixedly connected to the bottom of the lifting block, the outer wall of the support column is fixedly connected to a disc, the upper protrusion is affixed to the upper end surface of the disc, the upper end surface of the disc is fixedly connected to a plurality of lower protrusions arranged at equal intervals, the top of the lifting block is fixedly connected to a limiting plate, and a spring is installed between the limiting plate and the inner bottom of the storage box.

[0013] Furthermore, a short shaft offset from the center of gravity is fixedly connected to the bottom of the hollow box, and the short shaft is rotatably mounted on the top of the lifting block.

[0014] Furthermore, an L-shaped bracket is fixedly connected to the outer wall of the support column, and one end of the reciprocating screw away from the support column is rotatably connected to the L-shaped bracket.

[0015] A method for predicting the service life of an energy storage battery comprises the following steps:

[0016] S1. Repeatedly charge and discharge multiple battery packs while placing them in environments with different temperatures and testing their lifespans.

[0017] S2, causing the battery to continuously revolve around the reference axis to simulate the battery in motion;

[0018] S3, subjecting the battery to varying accelerations to simulate the battery moving at different speeds;

[0019] S4, intermittently tilting and deflecting the battery to simulate the turning action of the battery during movement;

[0020] S5. The battery is continuously subjected to vibration to simulate vibration of the battery during movement, and the vibration frequency is accelerated as the movement speed of the battery increases.

[0021] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] 1. The present invention drives the support column to rotate by driving the motor, and the battery in the hollow box will continue to move, thereby simulating the charging and discharging of the battery during movement. In the prediction process, the temperature control device can also control the temperature in the storage box, thereby simulating the working environment of the battery at high temperature, low temperature and normal temperature, so that the battery charging and discharging environment is more consistent with the actual situation, and the life prediction result is closer to the actual situation.

[0023] 2. The present invention uses a reciprocating screw to drive the storage box to slide linearly. When the reciprocating slide drives the storage box to slide in a direction away from the support column, the circumference of the storage box's revolution around the support column will increase, so the storage box and the battery inside will be subjected to a greater centrifugal force, thereby simulating the impact of different speeds on the battery during driving. Since the arc-shaped rack is provided with multiple sections, it can simulate sudden acceleration and deceleration of the battery, such as the rapid acceleration and deceleration of a car, so that the battery charging and discharging environment is more consistent with reality, thereby making the battery life prediction more accurate.

[0024] 3. In the present invention, when the centrifugal force acting on the storage box suddenly increases, the hollow box will deflect and tilt on the lifting block through the short axis, while the centrifugal force acting on the hollow box and the battery will suddenly decrease, and the battery and the hollow box will shift to the other side. In this way, the battery in the hollow box can simulate the force acting on the car when it suddenly turns, making the battery charging and discharging environment more consistent with the actual situation, and further improving the accuracy of battery service life prediction.

[0025] 4. The present invention causes the upper protrusion to slide over the multiple lower protrusions, which in turn causes the lifting block to vibrate up and down, thereby driving the hollow box and the battery inside to vibrate up and down, thereby simulating the vibration of the battery during movement. Combined with the effects of rapid acceleration and deceleration, the battery charging and discharging environment is more closely aligned with reality, further making the battery life prediction more accurate.

[0026] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached figure:

[0028] Figure 1 Schematic diagram of the three-dimensional structure of a device for predicting the service life of an energy storage battery proposed by the present invention Figure 1 ;

[0029] Figure 2 Schematic diagram of the three-dimensional structure of a device for predicting the service life of an energy storage battery proposed by the present invention Figure 2 ;

[0030] Figure 3 A schematic diagram of the disc structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0031] Figure 4 A schematic diagram of the reciprocating screw structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0032] Figure 5 A schematic diagram of the annular cover structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0033] Figure 6 A schematic diagram of the storage box structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the lifting block structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the hollow box structure of a device for predicting the service life of an energy storage battery proposed by the present invention;

[0036] Figure 9 This is a schematic diagram of the cross-sectional structure of the support column and transfer column of a device for predicting the service life of an energy storage battery proposed in the present invention.

[0037] In the figure: 1. Base; 2. Support column; 3. Storage box; 4. Temperature control device; 5. Outer cover; 6. Drive motor; 7. Driving gear; 8. Ring gear; 9. Ring frame; 10. Disc; 11. Reciprocating screw; 12. Cross bar; 13. Reciprocating slide; 14. Ring plate; 15. Driven gear; 16. Arc rack; 17. Longitudinal groove; 18. Lifting block; 19. Limit plate; 20. Spring; 21. Upper protrusion; 22. Lower protrusion; 23. Hollow box; 24. Short shaft; 25. Battery detector; 26. Inner cover; 27. Ring cover; 28. Transfer column; 29. Connecting line; 30. Wire; 31. Metal ring; 32. Brush. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] Example 1: Reference Figures 1-9 , a device for predicting the service life of an energy storage battery, comprising a base 1 for supporting the entire device, and further comprising: a cylindrical support column 2, rotatably connected to the top of the base 1, wherein the outer wall of the support column 2 is fixedly connected to a circumferentially distributed cross bar 12, the cross bar 12 is perpendicular to the axis of the support column 2, a storage box 3 for storing batteries is slidably mounted on the cross bar 12, an outer cover plate 5 for sealing the storage box 3 is installed in the port of the storage box 3, a temperature control device 4 is installed on the storage box 3, and the temperature control device 4 can be a combination of an electric heating wire for increasing the temperature and a semiconductor refrigeration fin radiator for reducing the temperature, and both Evenly distributed on the inner wall of the storage box 3, a driving part for driving the support column 2 to rotate is provided on the base 1, and the driving part includes a driving motor 6 fixedly mounted on the base 1, and the lower end of the support column 2 is fixedly connected to the annular frame 9, and the lower end of the annular frame 9 is fixedly mounted with a ring gear 8, and the output shaft of the driving motor 6 is fixedly mounted with a driving gear 7 meshing with the ring gear 8; a pushing component is arranged on the outer wall of the support column 2, and the pushing component is used to drive the storage box 3 intermittently close to or away from the support column 2. A cable for charging and discharging the battery is also provided in the storage box 3, and the end of the cable is connected to the charging and discharging equipment.

[0040] Specifically, when in use, the energy storage battery is fixed in the storage box 3 and charged and discharged. During the charge and discharge test, the drive motor 6 is turned on, and the drive motor 6 drives the driving gear 7 to rotate. The driving gear 7 drives the annular frame 9 to rotate through the ring gear 8, and the annular frame 9 drives the support column 2 to rotate. The support column 2 drives the storage box 3 to revolve around the support column 2 through the cross bar 12, and the battery in the storage box 3 will move synchronously, thereby simulating the charging and discharging of the battery during movement. In the prediction process, the temperature control device 4 can also control the temperature in the storage box 3, thereby simulating the working environment of the battery under high temperature, low temperature and normal temperature, so that the battery charging and discharging environment is more in line with the actual situation, and the life prediction result is closer to the actual situation.

[0041] Example 2: Reference Figure 3-Figure 5 , a device for predicting the service life of an energy storage battery, which is basically the same as Example 1, and further comprises:

[0042] The pushing component includes a reciprocating screw 11 rotatably connected to the outer wall of the support column 2, the reciprocating screw 11 is arranged parallel to the cross bar 12, and the outer wall of the reciprocating screw 11 is installed with a reciprocating slide 13 slidably connected to the cross bar 12. When the reciprocating screw 11 continues to rotate, the reciprocating slide 13 will slide back and forth along the outer wall of the reciprocating screw 11, the storage box 3 is fixedly connected to the reciprocating slide 13, and the base 1 is provided with a linkage part that drives the reciprocating screw 11 to rotate, and the linkage part includes a driven part fixedly installed at the end of the reciprocating screw 11 Gear 15, an annular cover 27 is fixedly connected to the base 1, an annular plate 14 is fixedly connected to the upper port of the annular cover 27, and a multi-segment arc-shaped rack 16 distributed circumferentially is fixedly installed on the annular plate 14. The axis of the arc-shaped rack 16 is collinear with the axis of the support column 2. When the reciprocating screw 11 rotates following the support column 2, the driven gear 15 will engage with the multi-segment arc-shaped rack 16 in sequence. The outer wall of the support column 2 is fixedly connected to an L-shaped bracket, and the end of the reciprocating screw 11 away from the support column 2 is rotatably connected to the L-shaped bracket.

[0043] Specifically, during the continuous rotation of the support column 2, the support column 2 will drive the reciprocating screw 11 and the driven gear 15 to rotate synchronously, and the driven gear 15 will continue to roll along the annular plate 14. When the driven gear 15 is engaged with a section of the arc-shaped rack 16 on the annular plate 14, the arc-shaped rack 16 will drive the reciprocating screw 11 to rotate through the driven gear 15, and the reciprocating screw 11 will drive the reciprocating slide 13 to slide linearly along its outer wall, and the reciprocating slide 13 will drive the storage box 3 to slide linearly. When the reciprocating slide 13 slides to the end of the reciprocating screw 11, the continuously rotating reciprocating screw 1 1 will drive the reciprocating slide 13 to slide in the opposite direction. When the reciprocating slide 13 drives the storage box 3 to slide in the direction away from the support column 2, the circumference of the storage box 3 revolving around the support column 2 will increase, so that the storage box 3 and the battery inside will be subjected to a greater centrifugal force, thereby simulating the impact of different speeds on the battery during driving. Since the arc-shaped rack 16 has multiple sections, it can simulate sudden acceleration and deceleration of the battery, such as the rapid acceleration and deceleration of a car, so that the battery charging and discharging environment is more consistent with reality, thereby making the battery life prediction more accurate.

[0044] Example 3: Reference Figure 3 、 Figure 6-Figure 9 , a device for predicting the service life of an energy storage battery, which is basically the same as Example 2, and further comprises:

[0045] The inner bottom of the above-mentioned storage box 3 is provided with a longitudinal groove 17, and a lifting block 18 is installed on the longitudinal groove 17 for longitudinal sliding. A hollow box 23 located in the storage box 3 is installed on the top of the lifting block 18. The material of the hollow box 23 is stainless steel or copper alloy for heat conduction, and the outer wall is provided with air holes. When testing, the battery needs to be fixed in the hollow box 23. There is a movable gap between the hollow box 23 and the inner wall of the storage box 3. An inner cover plate 26 for blocking the entrance of the hollow box 23 is installed in the opening of the hollow box 23. A shaking part is provided for driving the lifting block 18 to move up and down. The shaking part includes an upper protrusion 21 fixedly connected to the bottom of the lifting block 18. The outer wall of the support column 2 is fixedly connected to the disc 10. The upper protrusion 21 is attached to the upper end surface of the disc 10. The upper end surface of the disc 10 is fixedly connected to a plurality of lower protrusions 22 arranged at equal intervals. The top of the lifting block 18 is fixedly connected to a limiting plate 19. A spring 20 is installed between the limiting plate 19 and the inner bottom of the storage box 3. The outer shapes of the upper protrusion 21 and the lower protrusion 22 can both be hemispherical.

[0046] When the storage box 3 revolves around the support column 2, the storage box 3 will also drive the upper protrusion 21 at the bottom to slide along the upper surface of the disc 10. When the upper protrusion 21 slides above one of the lower protrusions 22, the upper protrusion 21 will be pushed up by the lower protrusion 22, and drive the lifting block 18 to slide upward in the longitudinal groove 17, and stretch the spring 20 through the limit plate 19. When the upper protrusion 21 passes over the top of the lower protrusion 22, the spring 20 is not subjected to the stretching force, so it will elastically reset and drive the lifting block 18 and the upper protrusion 21 to slide downward and reset through the limit plate 19. Therefore, when the upper protrusion 21 slides over multiple lower protrusions 22, the upper protrusion 21 will drive the lifting block 18 to slide upward in the longitudinal groove 17. The block 18 shakes up and down, thereby driving the hollow box 23 and the battery inside to shake up and down, thereby simulating the vibration of the battery when moving, and cooperating with the rapid acceleration and deceleration, so that the battery charging and discharging environment is more in line with the actual situation, and the battery life prediction is further made more accurate. When the storage box 3 is away from the support column 2, the path of the storage box 3 revolving around the support column 2 increases, so the upper protrusion 21 will pass more lower protrusions 22 in the same time, and the storage box 3 vibrates more distance, which is used to simulate a faster speed that will make the car and the battery vibrate more distance, so that the battery charging and discharging environment is more in line with the actual situation, and the battery life prediction is more accurate.

[0047] The bottom of the hollow box 23 is fixedly connected with a short shaft 24 that deviates from the center of gravity. The short shaft 24 is rotatably mounted on the top of the lifting block 18.

[0048] Specifically, when the storage box 3 suddenly moves away from the support column 2, that is, when the centrifugal force on the storage box 3 suddenly increases, since the short axis 24 deviates from the center of gravity of the hollow box 23, the hollow box 23 will deflect under the action of the suddenly increased centrifugal force, that is, it will deflect and tilt on the lifting block 18 through the short axis 24. When the storage box 3 suddenly moves toward the support column 2, the centrifugal force on the hollow box 23 and the battery will suddenly decrease, and the battery and the hollow box 23 will shift to the other side, so that the battery in the hollow box 23 can simulate the force applied when the car suddenly turns, so that the battery charging and discharging environment is more in line with the actual situation, and the prediction accuracy of the battery service life is further improved.

[0049] When the hollow box 23 shakes up and down and deflects in the storage box 3, the hollow box 23 can disturb the air in the storage box 3, so that the air heated and cooled by the temperature control device 4 in the storage box 3 can contact the batteries more evenly, so that the batteries are heated more evenly, reducing the occurrence of local overheating or overcooling of the batteries, and ensuring more accurate battery life prediction.

[0050] Example 4: Reference Figure 1-Figure 3 , a device for predicting the service life of an energy storage battery, which is basically the same as Example 3, and further comprises:

[0051] A transfer column 28 is fixedly connected to the above-mentioned base 1, and the support column 2 is rotatably connected to the transfer column 28. A plurality of battery detectors 25 for detecting battery life are fixedly installed around the transfer column 28. The connecting line 29 of the battery detector 25 extends into the transfer column 28. The storage box 3 is fixedly connected to a wire 30 extending into the support column 2. The wire 30 and the connecting line 29 are connected by a connecting assembly. The connecting assembly includes a metal ring 31 fixed in the transfer column 28, and a brush 32 elastically pressed on the metal ring 31 is fixedly connected to the support column 2. The wire 30 is fixedly connected to the brush 32, and the connecting line 29 is fixedly connected to the metal ring 31.

[0052] Specifically, the battery detector 25 is used to detect the battery life in real time, and the connecting component is used to connect the battery detector 25 to the battery. It is mainly composed of a brush 32 and a metal ring 31. Therefore, when the support column 2 rotates, the brush 32 can be driven to slide along the metal ring 31, thereby completing the electrical connection during rotation. The specific connection method can refer to the internal structure of the brushed motor. Similarly, the battery and the external charging device and discharging device can be realized in the same way as mentioned above. Since it is not the main problem to be solved by this application, it will not be elaborated here. Therefore, in practice, at least three groups of storage boxes 3 can be set. The three groups of storage boxes 3 can respectively create a high temperature environment, a low temperature environment and a normal temperature environment, and through the setting of the brush 32 and the metal ring 31, different charging power and discharging power can be provided to the three groups of batteries. The simulated scenarios can be more diverse and can be completed at one time, so that the prediction efficiency and accuracy of battery life can be higher.

[0053] Example 5: Reference Figures 1-9 , a method for predicting the service life of an energy storage battery, comprising the following steps:

[0054] S1. Repeatedly charge and discharge multiple battery packs while placing them in environments with different temperatures and testing their lifespans.

[0055] S2, causing the battery to continuously revolve around the reference axis to simulate the battery in motion;

[0056] S3, subjecting the battery to varying accelerations to simulate the battery moving at different speeds;

[0057] S4, intermittently tilting and deflecting the battery to simulate the turning action of the battery during movement;

[0058] S5. The battery is continuously subjected to vibration to simulate vibration of the battery during movement, and the vibration frequency is accelerated as the movement speed of the battery increases.

[0059] When the present invention is in use, the energy storage battery is fixed in the hollow box 23 and is charged and discharged. During the charging and discharging period, the battery detector 25 is used to detect the battery life in real time. During this period, the drive motor 6 is turned on, and the drive motor 6 will drive the driving gear 7 to rotate. The driving gear 7 will drive the annular frame 9 to rotate through the ring gear 8, and the annular frame 9 will drive the support column 2 to rotate. The support column 2 will drive the storage box 3 to revolve around the support column 2 through the cross bar 12, and the battery in the hollow box 23 will move synchronously, thereby simulating the charging and discharging of the battery during the movement. In the prediction process, the temperature control device 4 can also realize the control of the temperature in the storage box 3, thereby simulating the working environment of the battery under high temperature, low temperature and normal temperature, so that the battery charging and discharging environment is more in line with the actual situation, and the life prediction result is closer to the actual situation.

[0060] During the continuous rotation of the support column 2, the support column 2 will drive the reciprocating screw 11 and the driven gear 15 to rotate synchronously, and the driven gear 15 will continue to roll along the annular plate 14. When the driven gear 15 is engaged with a section of the arc-shaped rack 16 on the annular plate 14, the arc-shaped rack 16 will drive the reciprocating screw 11 to rotate through the driven gear 15, and the reciprocating screw 11 will drive the reciprocating slide 13 to slide linearly along its outer wall, and the reciprocating slide 13 will drive the storage box 3 to slide linearly. When the reciprocating slide 13 slides to the end of the reciprocating screw 11, the continuously rotating reciprocating screw 11 will It will drive the reciprocating slide 13 to slide in the opposite direction. When the reciprocating slide 13 drives the storage box 3 to slide in the direction away from the support column 2, the circumference of the storage box 3 revolving around the support column 2 will increase, so the storage box 3 and the battery inside will be subjected to a greater centrifugal force, thereby simulating the battery being affected by different speeds during driving. Since the arc-shaped rack 16 has multiple sections, it can simulate the battery being subjected to sudden acceleration and deceleration, such as the sudden acceleration and deceleration of a car, so that the battery charging and discharging environment is more consistent with the actual situation, thereby making the battery life prediction more accurate.

[0061] When the storage box 3 revolves around the support column 2, the storage box 3 will also drive the upper protrusion 21 at the bottom to slide along the upper surface of the disc 10. When the upper protrusion 21 slides above one of the lower protrusions 22, the upper protrusion 21 will be pushed up by the lower protrusion 22, and drive the lifting block 18 to slide upward in the longitudinal groove 17, and stretch the spring 20 through the limit plate 19. When the upper protrusion 21 passes over the top of the lower protrusion 22, the spring 20 is not subjected to the stretching force, so it will elastically reset and drive the lifting block 18 and the upper protrusion 21 to slide downward and reset through the limit plate 19. Therefore, when the upper protrusion 21 slides over multiple lower protrusions 22, the upper protrusion 21 will drive the lifting block 18 to slide upward in the longitudinal groove 17. The block 18 shakes up and down, thereby driving the hollow box 23 and the battery inside to shake up and down, thereby simulating the vibration of the battery when moving, and cooperating with the rapid acceleration and deceleration, so that the battery charging and discharging environment is more in line with the actual situation, and the battery life prediction is further made more accurate. When the storage box 3 is away from the support column 2, the path of the storage box 3 revolving around the support column 2 increases, so the upper protrusion 21 will pass more lower protrusions 22 in the same time, and the storage box 3 vibrates more distance, which is used to simulate a faster speed that will make the car and the battery vibrate more distance, so that the battery charging and discharging environment is more in line with the actual situation, and the battery life prediction is more accurate.

[0062] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A device for predicting the service life of an energy storage battery, comprising a base (1), characterized in that: Also includes: A support column (2) is rotatably connected to the top of the base (1), The outer wall of the support column (2) is fixedly connected to a circumferentially distributed cross bar (12), a storage box (3) is slidably mounted on the cross bar (12), an outer cover plate (5) is mounted in the port of the storage box (3), a temperature control device (4) is mounted on the storage box (3), and a driving unit for driving the support column (2) to rotate is provided on the base (1); A pushing component is provided on the outer wall of the support column (2), and is used to drive the storage box (3) to intermittently approach or move away from the support column (2); The inner bottom of the storage box (3) is provided with a longitudinal groove (17), and a lifting block (18) is longitudinally slidably installed in the longitudinal groove (17), and a hollow box (23) located in the storage box (3) is installed on the top of the lifting block (18), and an inner cover plate (26) is installed in the opening of the hollow box (23). The support column (2) is provided with a shaking part for driving the lifting block (18) to move up and down; the shaking part includes an upper protrusion (21) fixedly connected to the bottom of the lifting block (18), the outer wall of the support column (2) is fixedly connected to the disk (10), the upper protrusion (21) is attached to the upper end surface of the disk (10), and the upper end surface of the disk (10) is fixedly connected to a plurality of lower protrusions (22) arranged at equal intervals, the top of the lifting block (18) is fixedly connected to a limit plate (19), and a spring (20) is installed between the limit plate (19) and the inner bottom of the storage box (3); The bottom of the hollow box (23) is fixedly connected to a short shaft (24) that is offset from the center of gravity, and the short shaft (24) is rotatably mounted on the top of the lifting block (18).

2. The device for predicting the service life of an energy storage battery according to claim 1, characterized in that: The driving part comprises a driving motor (6) fixedly mounted on the base (1); the lower end of the support column (2) is fixedly connected to an annular frame (9); the lower end of the annular frame (9) is fixedly mounted with a ring gear (8); and the output shaft of the driving motor (6) is fixedly mounted with a driving gear (7) meshing with the ring gear (8).

3. The device for predicting the service life of an energy storage battery according to claim 1, characterized in that: The pushing component includes a reciprocating screw (11) rotatably connected to the outer wall of the support column (2), the reciprocating screw (11) is arranged parallel to the cross bar (12), the outer wall of the reciprocating screw (11) is installed with a reciprocating slide (13) slidably connected to the cross bar (12), the storage box (3) is fixedly connected to the reciprocating slide (13), and the base (1) is provided with a linkage part for driving the reciprocating screw (11) to rotate.

4. The device for predicting the service life of an energy storage battery according to claim 3, characterized in that: The linkage portion includes a driven gear (15) fixedly mounted on the end of the reciprocating screw (11); an annular cover (27) is fixedly connected to the base (1); an annular plate (14) is fixedly connected to the upper end of the annular cover (27); and a plurality of arc-shaped racks (16) distributed circumferentially are fixedly mounted on the annular plate (14). When the reciprocating screw (11) rotates following the support column (2), the driven gear (15) engages with the plurality of arc-shaped racks (16) in sequence.

5. The device for predicting the service life of an energy storage battery according to claim 1, characterized in that: A transfer column (28) is fixedly connected to the base (1), the support column (2) is rotatably connected to the transfer column (28), a plurality of battery detectors (25) are fixedly installed around the transfer column (28), the connecting wires (29) of the battery detectors (25) extend into the transfer column (28), and a wire (30) extending into the support column (2) is fixedly connected to the storage box (3), and the wire (30) and the connecting wire (29) are connected via a connecting assembly.

6. The device for predicting the service life of an energy storage battery according to claim 3, characterized in that: An L-shaped bracket is fixedly connected to the outer wall of the support column (2), and one end of the reciprocating screw (11) away from the support column (2) is rotatably connected to the L-shaped bracket.

7. A method for predicting the service life of an energy storage battery, characterized in that: The device for predicting the service life of an energy storage battery according to any one of claims 1 to 6 comprises the following steps: S1. Repeatedly charge and discharge multiple battery packs while placing them in environments with different temperatures and testing their lifespans. S2, causing the battery to continuously revolve around the reference axis to simulate the battery in motion; S3, subjecting the battery to varying accelerations to simulate the battery moving at different speeds; S4, intermittently tilting and deflecting the battery to simulate the turning action of the battery during movement; S5. The battery is continuously subjected to vibration to simulate vibration of the battery during movement, and the vibration frequency is accelerated as the movement speed of the battery increases.

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