Photovoltaic energy storage lithium battery pack

Abstract

The invention discloses a photovoltaic energy storage lithium battery pack, and relates to the technical field of battery packs, the photovoltaic energy storage lithium battery pack comprises a battery box, the battery box is internally provided with a placing cavity, and the photovoltaic energy storage lithium battery pack also comprises a motor, the fan is fixedly arranged on an output shaft of the motor; the lithium batteries are arranged in the placement cavity at intervals; the heat dissipation plates are arranged on the two sides of the lithium battery in a sliding manner; the driving gear set is arranged on an output shaft of the motor; the matching assembly is arranged between two adjacent lithium batteries and is used for driving dust on the heat dissipation plate to be accumulated; gaps are formed between the lithium battery and the upper end of the placement cavity and between the heat dissipation plate and the upper end of the placement cavity; the lithium battery has the advantages that dust accumulated on the lithium battery is reduced, so that the service life of the lithium battery is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of battery packs, and in particular to a photovoltaic energy storage lithium battery pack. Background Art

[0002] Lithium battery is a battery that uses lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution. With the widespread use of electrical appliances in households, the number of miniaturized devices is increasing, and the demand for batteries is also increasing. Lithium battery packs occupy an important position in batteries. At present, when the lithium battery pack in the battery box is working for a long time, if the battery power is too high, the lithium battery is prone to overheating, and in severe cases, the lithium battery and the battery box will be burned.

[0003] A related battery box for placing a lithium battery pack has a heat dissipation hole at the upper end of the battery box to ventilate the lithium battery in order to improve the heat dissipation effect of the lithium battery in the battery box.

[0004] Although the dustproof net on the heat dissipation hole can effectively prevent some dust from entering the battery box, some fine particles in the dust will still pass through the dustproof net and enter the battery box through the heat dissipation hole, so that the dust is easily accumulated on the lithium battery, which greatly affects the service life of the lithium battery. Summary of the invention

[0005] In order to reduce the problem of dust accumulation on lithium batteries and affecting the service life of lithium batteries, the present application provides a photovoltaic energy storage lithium battery pack.

[0006] The present application provides a photovoltaic energy storage lithium battery pack, which adopts the following technical solution: A photovoltaic energy storage lithium battery pack includes a battery box, wherein a placement cavity is provided in the battery box, and further includes: A motor, wherein the motor is fixedly arranged at one side of the placement cavity; A fan, the fan being fixedly arranged on an output shaft of the motor; Lithium batteries, the lithium batteries are arranged in intervals in the placement cavity; A heat sink, the heat sink being slidably disposed on both sides of the lithium battery; A driving gear set, wherein the driving gear set is arranged on an output shaft of the motor; A matching component, which is disposed between two adjacent lithium batteries and is used to drive dust accumulation on the heat sink; Wherein, a gap is provided between the lithium battery, the heat sink and the upper end of the placement cavity.

[0007] By adopting the above technical solution, the fan is driven to rotate by a motor, which can accelerate the air flow in the placement cavity, thereby enhancing the heat dissipation effect of the lithium battery. The fan is fixed to the output shaft of the motor to ensure the stable operation and heat dissipation efficiency of the fan. The heat sink is slidably arranged on both sides of the lithium battery, which can further expand the heat dissipation area and improve the heat dissipation efficiency. The spacing between the heat sink and the lithium battery and the gap with the upper end of the placement cavity are conducive to air circulation and heat dissipation. The setting of the driving gear set can drive the matching components to shake off the dust on the heat sink during the rotation of the fan. Thereby reducing the problem of dust accumulation on the lithium battery affecting the service life of the lithium battery.

[0008] Optionally, a driving groove is horizontally arranged on one side of the battery box, and the driving gear set includes: A first transmission wheel, wherein the first transmission wheel is fixedly disposed on an output shaft of the motor; A second transmission wheel, the second transmission wheel is rotatably disposed on the side wall of the placement cavity through a rotating shaft, and the second transmission wheel is located above the motor; A driving belt, wherein the driving belt is wound around the first transmission wheel and the second transmission wheel; A first bevel gear, the first bevel gear is fixedly disposed at an end of the rotating shaft away from the side wall of the placement cavity; a second bevel gear, the second bevel gear meshing with the first bevel gear; A first matching wheel, wherein the first matching wheel is rotatably disposed in the driving groove, and the first matching wheel is coaxially disposed with the first bevel gear.

[0009] By adopting the above technical solution, the first transmission wheel is driven to rotate by the motor, and then the second transmission wheel is driven to rotate by the driving belt. The power of the motor can be efficiently transmitted, and the rapid response and stable transmission of power can be achieved. When the second transmission wheel rotates, the first bevel gear coaxial with it will be driven to rotate. Since the first bevel gear is meshed with the second bevel gear, the power can be further transmitted to the second bevel gear, realizing the conversion and transmission of power.

[0010] Optionally, the matching component includes: a second matching wheel, the second matching wheel being rotatably disposed in the driving groove; A matching belt, wherein the matching belt is wound around the first matching wheel and the second matching wheel; A matching plate, the matching plate is fixedly arranged in the placement cavity, the axis of the matching plate is parallel to the axis of the lithium battery, and a matching groove is horizontally arranged at the axis center of the matching plate; A mating shaft, wherein the mating shaft is rotatably disposed in the mating plate, and one end of the mating shaft is fixedly connected to the second mating wheel; Cams, two cams are provided, both of which are rotatably arranged in the matching grooves, and the cams are fixedly arranged on the circumference of the matching shaft; A telescopic column, one end of which is rotatably arranged on one side of the heat dissipation plate, and the other end of which is a free end.

[0011] By adopting the above technical solution, the first mating wheel and the second mating wheel and the mating belt therebetween realize stable transmission of power. The fixed connection between the mating shaft and the second mating wheel and the rotation setting of the cam in the mating groove enable the mating shaft and the cam to rotate together when the second mating wheel rotates. This design cleverly utilizes the profile change of the cam to drive the telescopic column to extend and retract, thereby driving the heat sink to slide. This allows the dust on the heat sink to fall off.

[0012] Optionally, the matching component further includes: A first spring, one end of the first spring being fixedly disposed on one side of the matching plate, and the other end of the first spring being fixedly disposed on one side of the heat dissipation plate; A guide cylinder, one end of which is fixedly arranged on one side of the matching plate, and the other end of which is a free end, and the guide cylinder is sleeved on the outer peripheral side of the first spring.

[0013] By adopting the above technical solution, the setting of the first spring allows the heat sink to maintain a stable sliding track during the sliding process due to the elastic force of the first spring. The guide tube is sleeved on the outer peripheral side of the first spring, which not only provides stable support and guidance for the spring, but also limits the shaking range of the heat sink during the sliding process. It ensures that the heat sink can fit tightly on both sides of the lithium battery, effectively transfers heat from the lithium battery to the heat sink, and takes away the heat through the blowing of the fan, thereby improving the heat dissipation efficiency. Furthermore, when the heat sink is shaking, the dust gathered on the heat sink can fall off.

[0014] Optionally, the mating components are arranged in multiple groups at intervals.

[0015] By adopting the above technical solution and arranging multiple groups of components at intervals, the heat dissipation effect of the battery box can be increased.

[0016] Optionally, a dust collecting box is provided at the lower end of the battery box, and the dust collecting box is connected to the battery box via a connecting piece.

[0017] By adopting the above technical solution, the dust collecting box can collect the dust in the battery box, thereby preventing the dust from accumulating in the battery box and affecting the service life of the lithium battery.

[0018] Optionally, a blanking plate is provided at the lower end of the battery box, a limiting groove is provided vertically on the ash collecting box, a sliding groove is provided horizontally on the ash collecting box, and the connecting member includes: A limiting column, the limiting column is fixedly arranged at the lower end of the battery box, and an embedding groove is arranged on one side of the limiting column close to the slide groove; a second spring, one end of which is fixedly disposed at the bottom of the annular groove; A fixed block is slidably disposed in the slide slot, and one end of the fixed block is fixedly connected to an end of the second spring away from the bottom wall of the slide slot.

[0019] By adopting the above technical solution, the battery box can be stably placed on the dust collection box through the cooperation of the limit column and the limit groove, and this cooperation method has a certain anti-drift ability, which can ensure that the battery box will not be displaced due to vibration or external force during use. The design of the embedded groove provides an additional fixing point for the connector, further enhancing the connection stability between the battery box and the dust collection box.

[0020] Optionally, the blanking plate is provided with a blanking hole.

[0021] By adopting the above technical solution and setting the discharge hole, dust can fall from the battery box into the dust collecting box.

[0022] In summary, the embodiment of the present invention provides a photovoltaic energy storage lithium battery pack, which includes at least one of the following beneficial technical effects: 1. The fan is driven by a motor to rotate, which can accelerate the air flow in the placement cavity, thereby enhancing the heat dissipation effect of the lithium battery. The fan is fixed to the output shaft of the motor to ensure the stable operation and heat dissipation efficiency of the fan. The heat sink is slidably set on both sides of the lithium battery, which can further expand the heat dissipation area and improve the heat dissipation efficiency. The spacing between the heat sink and the lithium battery and the gap with the upper end of the placement cavity are conducive to air circulation and heat dissipation. The setting of the driving gear set can drive the matching components to shake off the dust on the heat sink during the rotation of the fan. Thereby reducing the problem of dust accumulation on the lithium battery affecting the service life of the lithium battery.

[0023] 2. Stable power transmission is achieved through the first mating wheel and the second mating wheel and the mating belt between them. The fixed connection between the mating shaft and the second mating wheel and the rotation setting of the cam in the mating groove enable the mating shaft and the cam to rotate together when the second mating wheel rotates. This design cleverly utilizes the profile change of the cam to drive the telescopic column to extend and retract, thereby driving the heat sink to slide. This allows the dust on the heat sink to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A schematic diagram of the structure of a photovoltaic energy storage lithium battery pack provided by an embodiment of the present invention; Figure 2 A cross-sectional view of a photovoltaic energy storage lithium battery pack provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a driving component in a photovoltaic energy storage lithium battery pack provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a matching component in a photovoltaic energy storage lithium battery pack provided by an embodiment of the present invention; Figure 5 for Figure 2 Enlarged view of part A.

[0025] Description of the symbols in the figure: 1. Battery; 11. Placement cavity; 12. Motor; 13. Fan; 14. Lithium battery; 15. Heat sink; 16. Ash box; 2. Driving gear set; 21. First transmission wheel; 22. Second transmission wheel; 23. Driving belt; 24. First bevel gear; 25. Second bevel gear; 26. First matching wheel; 27. Driving groove; 31. Second matching wheel; 32. Matching belt; 33. Matching plate; 34. Matching shaft; 35. Cam; 36. Telescopic column; 37. First spring; 38. Guide cylinder; 4. Connecting piece; 41. Limiting column; 42. Second spring; 43. Fixing block; 44. Limiting groove; 45. Slide groove; 46. Embedded groove; 47. Feeding hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-5 This application is described in further detail.

[0027] Combination Figure 1 and Figure 2 The embodiment of the present application discloses a photovoltaic energy storage lithium battery pack, comprising: a battery box 1, a placement cavity 11 is arranged in the battery box 1, and also comprising: a motor 12, a fan 13, a lithium battery 14, a heat sink 15, a driving gear set 2, and a matching component, wherein the motor 12 is fixedly arranged on one side of the placement cavity 11; the fan 13 is fixedly arranged on the output shaft of the motor 12; the lithium battery 14 is arranged at intervals in the placement cavity 11; the heat sink 15 is slidably arranged on both sides of the lithium battery 14; the driving gear set 2 is arranged on the output shaft of the motor 12; the matching component is arranged between two adjacent lithium batteries 14, and is used to drive the dust accumulation on the heat sink 15; wherein the lithium battery 14 and the heat sink 15 are both provided with a gap with the upper end of the placement cavity 11.

[0028] In the embodiment of the present application, the battery box 1 and the placement cavity 11 are arranged in a square shape, and the size and shape of the placement cavity 11 should be set according to the size and number of the lithium battery 14. An air inlet is provided at one end of the battery box 1, and an air outlet is provided at the other end. In the placement cavity 11, a plurality of lithium batteries 14 are arranged at a certain interval. A certain distance is maintained between these lithium batteries 14 to ensure the heat dissipation effect and electrical safety. A motor 12 is fixedly arranged on one side of the placement cavity 11, and a fan 13 is fixedly connected to the output shaft of the motor 12. The function of the fan 13 is to rotate under the drive of the motor 12 to generate airflow for heat dissipation. The blades of the fan 13 are made of lightweight plastic material. Specifically, the fan 13 can be made of ABS plastic material. In other embodiments, other materials with high strength and light weight can also be used instead, such as PC material. The heat sink 15 is made of aluminum material and has good thermal conductivity. In addition, the gap maintained between the heat sink 15 and the lithium battery 14 avoids direct contact, thereby reducing the efficiency of heat conduction. It is also an alternative to use magnesium-aluminum alloy material for the heat sink 15, which can not only effectively reduce the weight but also has better corrosion resistance. It should be noted that the heat sink 15 is provided with heat dissipation holes at intervals.

[0029] During specific use, the lithium battery 14 is placed between the two heat sinks 15, and the motor 12 is started to rotate the fan 13 to speed up the air flow. However, due to the setting of the air inlet and outlet holes, dust will enter the battery box 1 after a period of use. Since the heat sink 15 is set on the side of the lithium battery 14, dust will accumulate on the heat sink 15. The driving gear set 2 drives the matching component, so that the matching component drives the heat sink 15 to vibrate, so that the dust falls under the action of the vibration. A blanking plate is provided at the lower end of the battery box 1, and the blanking plate is provided with a blanking hole 47. The setting of the blanking plate and the blanking hole 47 allows the dust to fall into the dust collection box 16. This reduces the accumulation of dust on the lithium battery 14 and improves the problem of affecting the service life of the lithium battery 14.

[0030] Combination Figure 2 , Figure 3 and Figure 4In a specific application embodiment, a driving groove 27 is horizontally arranged on one side of the battery box 1, and the driving gear set 2 includes a first transmission wheel 21, a second transmission wheel 22, a driving belt 23, a first bevel gear 24, a second bevel gear 25, and a first matching wheel 26. The first transmission wheel 21 is fixedly arranged on the output shaft of the motor 12; the second transmission wheel 22 is rotatably arranged on the side wall of the placement cavity 11 through a rotating shaft, and the second transmission wheel 22 is located above the motor 12; the driving belt 23 is correspondingly wound around the first transmission wheel 21 and the second transmission wheel 22; the first bevel gear 24 is fixedly arranged at one end of the rotating shaft away from the side wall of the placement cavity 11; the second bevel gear 25 is meshed with the first bevel gear 24; the first matching wheel 26 is rotatably arranged in the driving groove 27, and the first matching wheel 26 is coaxially arranged with the first bevel gear 24.

[0031] In the embodiment of the present application, the first transmission wheel 21 and the output shaft of the motor 12 can be integrally formed, or can be fixedly connected by welding or bolting, which is not specifically limited in the embodiment of the present application. The drive belt 23 is provided to realize power transmission, so that when the motor 12 rotates, it will drive the first transmission wheel 21 to rotate, and the drive slot 27 is arranged in a rectangular shape, and the drive slot 27 is arranged along the length direction of the battery box 1.

[0032] During specific use, when heat dissipation is required, the motor 12 is started and drives the first transmission wheel 21 to rotate; the first transmission wheel 21 transmits power to the second transmission wheel 22 through the driving belt 23, causing it to rotate; the rotation of the second transmission wheel 22 drives the first bevel gear 24 to rotate, and then the second bevel gear 25 meshing with the first bevel gear 24 also starts to rotate; since the first mating wheel 26 is coaxially arranged with the first bevel gear 24, the rotation of the first bevel gear 24 will drive the first mating wheel 26 to rotate in the driving groove 27; thereby driving the mating component to move.

[0033] Combination Figure 2 , Figure 3 and Figure 4In a specific application embodiment, the matching assembly includes: a second matching wheel 31, a matching belt 32, a matching plate 33, a matching shaft 34, a cam 35, a telescopic column 36, a first spring 37, and a guide cylinder 38. The second matching wheel 31 is rotatably arranged in the driving groove 27; the matching belt 32 is correspondingly wound around the first matching wheel 26 and the second matching wheel 31; the matching plate 33 is fixedly arranged in the placement cavity 11, the matching plate 33 is parallel to the lithium battery 14, and a matching groove is horizontally arranged at the axis of the matching plate 33; the matching shaft 34 is rotatably arranged in the matching plate 33, and one end of the matching shaft 34 is connected to the first matching wheel 26 and the second matching wheel 31. The two matching wheels 31 are fixedly connected; two cams 35 are provided, both of which are rotatably arranged in the matching grooves, and the cams 35 are fixedly arranged on the peripheral side of the matching shaft 34; one end of the telescopic column 36 is rotatably arranged on one side of the heat sink 15, and the other end of the telescopic column 36 is a free end; one end of the first spring 37 is fixedly arranged on one side of the matching plate 33, and the other end of the first spring 37 is fixedly arranged on one side of the heat sink 15; one end of the guide cylinder 38 is fixedly arranged on one side of the matching plate 33, and the other end of the guide cylinder 38 is a free end, and the guide cylinder 38 is sleeved on the outer peripheral side of the first spring 37. Multiple groups of matching components are arranged at intervals.

[0034] In the embodiment of the present application, the matching plate 33 is arranged in a square shape, the specifications of the matching plate 33 are consistent with the specifications of the heat sink 15, and the length of the matching shaft 34 is sufficient to pass through the matching plate 33. The cam 35 is fixedly arranged with the matching shaft 34, wherein the two cams 35 are arranged symmetrically, and there can be a space or a fit between the two cams 35, which is specifically arranged according to the actual use situation, and the embodiment of the present application does not make specific restrictions. The telescopic column 36 has a rod cavity portion provided with a third spring to provide an elastic space for the movement of the telescopic column 36. The first spring 37 and the guide cylinder 38 are arranged in a cylindrical shape, wherein the diameter of the guide cylinder 38 is sufficient for the first spring 37 to be compressed or stretched. The arrangement of the first spring 37 and the guide cylinder 38 allows the first spring 37 to be stretched when the heat sink 15 is pushed by the cam 35, and when the cam 35 is not in contact with the telescopic column 36, the spring drives the heat sink 15 to contract due to its own elastic recovery ability.

[0035] During specific use, when the motor 12 rotates, the first matching wheel 26 rotates, causing the matching belt 32 to rotate. During the rotation process, the matching belt 32 drives the second matching wheel 31 to rotate. When the second matching wheel 31 rotates, it drives the matching shaft 34 to rotate. Since two cams 35 are symmetrically arranged, the cam 35 follows the matching shaft 34 during the rotation of the matching shaft 34, so that the two cams 35 push the telescopic column 36 at the same time. Since the heat sink 15 and the matching plate 33 are connected by the first spring 37, and the heat sink 15 slides in the placement cavity 11, the heat sink 15 will vibrate due to the push of the first spring 37 and the telescopic column 36, so that the dust on the heat sink 15 is shaken off to prevent dust from accumulating on the lithium battery 14 and affecting the service life of the lithium battery 14.

[0036] Combination Figure 3 , Figure 4 and Figure 5 In a specific application embodiment, a ash collecting box 16 is provided at the lower end of the battery box 1, and the ash collecting box 16 is connected to the battery box 1 through a connecting member 4. A blanking plate is provided at the lower end of the battery box 1, and a limiting groove 44 is vertically provided on the ash collecting box 16, and a slide groove 45 is horizontally provided on the ash collecting box 16. The connecting member 4 includes a limiting column 41, a second spring 42, and a fixing block 43. The limiting column 41 is fixedly provided at the lower end of the battery box 1, and an embedding groove 46 is provided on the side of the limiting column 41 close to the slide groove 45; one end of the second spring 42 is fixedly provided at the bottom of the slide groove 45; the fixing block 43 is slidably provided in the slide groove 45, and one end of the fixing block 43 is fixedly connected to one end of the second spring 42 away from the bottom wall of the slide groove 45. The blanking plate is provided with a blanking hole 47.

[0037] In the embodiment of the present application, the dust collecting box 16 is arranged in a square shape, and the blanking plate is arranged in a rectangular plate shape. It should be noted that the blanking plate is provided with a blanking hole 47 from the first lithium battery 14 to the last lithium battery 14 for dust to fall. The limiting groove 44, the slide groove 45 and the embedding groove 46 are all arranged in a rectangular shape, and the limiting column 41 is arranged in a rectangular shape, wherein one end of the limiting column 41 and the lower end of the battery box 1 can be integrally formed, or can be fixedly connected by welding or bolting. The fixing block 43 has a guiding inclined surface.

[0038] During specific use, the battery box 1 is placed on the upper end of the ash collecting box 16, and the limiting column 41 is set in the limiting groove 44. Since the fixing block 43 is provided with a guiding inclined surface, the limiting column 41 will squeeze the fixing block 43 toward the bottom wall of the slide groove 45 when entering the limiting groove 44. When the slide groove 45 is connected to the embedding groove 46, the second spring 42 drives the fixing block 43 to be embedded in the embedding groove 46, thereby fixing the battery box 1 and the ash collecting box 16, thereby increasing the connection stability between the battery box 1 and the ash collecting box 16.

[0039] The implementation principle of the embodiment of the present application is: install the lithium battery 14 in the battery box 1, and then fix the battery box 1 and the dust box 16. When the motor 12 is started, it drives the fan 13 to rotate, starts and drives the first transmission wheel 21 to rotate; the first transmission wheel 21 transmits power to the second transmission wheel 22 through the driving belt 23 to rotate it; the rotation of the second transmission wheel 22 drives the first bevel gear 24 to rotate, and then the second bevel gear 25 meshing with the first bevel gear 24 also starts to rotate; since the first mating wheel 26 is coaxially arranged with the first bevel gear 24, the rotation of the first bevel gear 24 will drive the first mating wheel 26 to rotate in the driving groove 27; thereby driving the mating component to move. The first mating wheel 26 rotates, causing the mating belt 32 to rotate. The mating belt 32 drives the second mating wheel 31 to rotate during the rotation. When the second mating wheel 31 rotates, it drives the mating shaft 34 to rotate. Since two cams 35 are symmetrically arranged, the cams 35 rotate along with the mating shaft 34 during the rotation of the mating shaft 34, so that the two cams 35 push the telescopic column 36 at the same time. Since the heat sink 15 and the mating plate 33 are connected by the first spring 37, and the heat sink 15 slides in the placement cavity 11, the heat sink 15 will vibrate due to the push of the first spring 37 and the telescopic column 36, so that the dust on the heat sink 15 is shaken off to prevent dust from accumulating on the lithium battery 14 and affecting the service life of the lithium battery 14.

[0040] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A photovoltaic energy storage lithium battery pack, comprising a battery box (1), wherein a placement cavity (11) is provided in the battery box (1), characterized in that: Also includes: A motor (12), the motor (12) being fixedly arranged on one side of the placement cavity (11); A fan (13), the fan (13) being fixedly arranged on an output shaft of the motor (12); Lithium batteries (14), the lithium batteries (14) being arranged at intervals in the placement cavity (11); A heat sink (15), the heat sink (15) being slidably disposed on both sides of the lithium battery (14); A driving gear set (2), the driving gear set (2) being arranged on an output shaft of the motor (12); a matching component, the matching component being arranged between two adjacent lithium batteries (14) and used to drive dust accumulation on the heat sink (15); Wherein, a gap is provided between the lithium battery (14) and the heat sink (15) and the upper end of the placement cavity (11).

2. A photovoltaic energy storage lithium battery pack according to claim 1, characterized in that: A driving groove (27) is horizontally arranged on one side of the battery box (1), and the driving gear set (2) comprises: A first transmission wheel (21), the first transmission wheel (21) being fixedly arranged on an output shaft of the motor (12); a second transmission wheel (22), the second transmission wheel (22) being rotatably disposed on a side wall of the placement cavity (11) via a rotating shaft, the second transmission wheel (22) being located above the motor (12); A driving belt (23), wherein the driving belt (23) is wound around the first transmission wheel (21) and the second transmission wheel (22); A first bevel gear (24), the first bevel gear (24) being fixedly arranged at an end of the rotating shaft away from a side wall of the placement cavity (11); a second bevel gear (25), the second bevel gear (25) being meshed with the first bevel gear (24); A first mating wheel (26), the first mating wheel (26) is rotatably disposed in the driving groove (27), and the first mating wheel (26) is coaxially disposed with the first bevel gear (24).

3. A photovoltaic energy storage lithium battery pack according to claim 2, characterized in that: The mating assembly comprises: a second mating wheel (31), the second mating wheel (31) being rotatably disposed in the driving groove (27); a matching belt (32), the matching belt (32) being wound around the first matching wheel (26) and the second matching wheel (31); A matching plate (33), the matching plate (33) being fixedly arranged in the placement cavity (11), the axis of the matching plate (33) being parallel to the axis of the lithium battery (14), and a matching groove being horizontally arranged at the axis center of the matching plate (33); a mating shaft (34), the mating shaft (34) being rotatably disposed in the mating plate (33), one end of the mating shaft (34) being fixedly connected to the second mating wheel (31); Cams (35), two cams (35) are provided, both of the two cams (35) are rotatably disposed in the matching groove, and the cams (35) are fixedly disposed on the circumference of the matching shaft (34); A telescopic column (36), one end of the telescopic column (36) being rotatably disposed on one side of the heat dissipation plate (15), and the other end of the telescopic column (36) being a free end.

4. A photovoltaic energy storage lithium battery pack according to claim 3, characterized in that: The mating assembly further comprises: a first spring (37), one end of the first spring (37) being fixedly disposed on one side of the matching plate (33), and the other end of the first spring (37) being fixedly disposed on one side of the heat dissipation plate (15); A guide tube (38), one end of the guide tube (38) is fixedly disposed on one side of the matching plate (33), the other end of the guide tube (38) is a free end, and the guide tube (38) is sleeved on the outer peripheral side of the first spring (37).

5. A photovoltaic energy storage lithium battery pack according to claim 4, characterized in that: The matching components are arranged in multiple groups at intervals.

6. A photovoltaic energy storage lithium battery pack according to claim 1, characterized in that: A dust collecting box (16) is provided at the lower end of the battery box (1), and the dust collecting box (16) is connected to the battery box (1) via a connecting piece (4).

7. A photovoltaic energy storage lithium battery pack according to claim 6, characterized in that: The battery box (1) is provided with a blanking plate at the lower end, the ash collecting box (16) is provided with a limiting groove (44) vertically, the ash collecting box (16) is provided with a sliding groove (45) horizontally, and the connecting member (4) comprises: A limiting column (41), the limiting column (41) being fixedly arranged at the lower end of the battery box (1), and an embedding groove (46) being arranged on one side of the limiting column (41) close to the sliding groove (45); a second spring (42), one end of the second spring (42) being fixedly disposed at the bottom of the annular groove; A fixed block (43), the fixed block (43) being slidably disposed in the slide groove (45), one end of the fixed block (43) being fixedly connected to an end of the second spring (42) away from the bottom wall of the slide groove (45).

8. A photovoltaic energy storage lithium battery pack according to claim 7, characterized in that: The blanking plate is provided with a blanking hole (47).

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