Lithium battery with protection function

Abstract

The invention provides a lithium battery with a protection function, and relates to the technical field of battery protection, the lithium battery comprises a bottom plate, a guide rod is fixed on the bottom plate, a telescopic piece is slidably connected on the guide rod, a plurality of force storage springs are symmetrically and fixedly connected between the telescopic piece and the bottom plate, and a fixed ring is fixed on the telescopic end of the telescopic piece. A pressure spring is fixedly connected between the fixing ring and the telescopic part, a battery is fixed to the telescopic part, the telescopic part is electrically connected with the battery, the outer side of the battery is covered with a protective shell, a shaft is rotationally connected to the bottom plate, and a first torsional spring is fixedly connected between the shaft and the bottom plate. When the device encounters objects such as stones in the driving process, the protection shell can be pushed by the objects to move in the opposite advancing direction, under the action of the force storage springs, the protection shell can be buffered, so that impact borne by the protection shell is reduced, the protection shell and a battery in the protection shell are prevented from being violently collided, and the service life of the device is prolonged. Therefore, the battery is prevented from being deformed and short-circuited due to violent impact.

Description

Technical Field

[0001] The present invention relates to the technical field of battery protection, and in particular to a lithium battery with a protection function. Background Art

[0002] During the use of lithium batteries, it is very important to protect the batteries. If the lithium battery is hit or squeezed, it may cause damage to the internal structure and form an internal short circuit. The internal short circuit will cause the battery to heat up rapidly and even cause a fire or explosion. The collision may also cause damage to the battery casing, resulting in leakage. The leakage of electrolyte inside the battery will cause harm to the environment and human health.

[0003] In electric skateboards, people often use lithium batteries as power sources, and the lithium batteries are usually installed at the bottom of the skateboard and then covered with a protective shell to achieve a protective effect. When the lithium battery under the skateboard is hit, the battery can be protected to a certain extent under the protection of the protective shell. However, because the battery and the protective shell are fixedly connected to the bottom of the skateboard, when a collision occurs, the object will directly hit the protective shell, and there is no buffering device, so the protective shell is easily damaged. When the protective shell is damaged, it cannot provide good protection for the battery. Therefore, a lithium battery with a protective function is designed that can buffer the battery and the protective shell, thereby reducing the impact and collision of the battery and the protective shell. Summary of the Invention

[0004] In order to overcome the disadvantage that when a collision occurs, the object will directly hit the protective shell, causing the protective shell to be easily damaged, the technical problem to be solved is to provide a lithium battery with a protective function that can buffer the battery and the protective shell, thereby reducing the impact and collision of the battery and the protective shell.

[0005] The technical solution is: a lithium battery with a protective function, including a base plate, the base plate is fixed to the skateboard by a screw, a guide rod is fixed to the base plate, a telescopic part is slidably connected to the guide rod, a number of force storage springs are symmetrically fixedly connected between the telescopic part and the base plate, a fixing ring is fixed on the telescopic end of the telescopic part, a pressure spring is fixedly connected between the fixing ring and the telescopic part, a battery is fixed on the telescopic part, the outer side of the battery is covered with a protective shell, the protective shell is provided with an inclined surface, a rotating shaft is rotatably connected to the base plate, a first torsion spring is fixedly connected between the rotating shaft and the base plate, and a counterweight assembly that can maintain the balance of the base plate is connected to the base plate.

[0006] Furthermore, it also includes an electric wire, one end of which is fixedly connected to the side of the slide close to the first torsion spring, and the other end of the electric wire passes through the central axis of the rotating shaft, passes out from the rotating shaft, is wound around the rotating shaft and is fixedly connected to the telescopic member.

[0007] Furthermore, the counterweight assembly includes a fixed group, which is fixed to the base plate. The fixed group consists of a number of fixed blocks and a number of ropes, wherein two fixed blocks form a group, and the two fixed blocks in each group are symmetrically fixed in the base plate, wherein the ropes are slidingly connected between two adjacent groups of fixed blocks, the ropes are fixedly connected to the telescopic parts, and the lead balls are symmetrically fixed on the ropes.

[0008] Furthermore, it also includes a pushing assembly that can push away objects that hit the protective shell. The pushing assembly includes a number of connecting parts, which are circumferentially fixedly connected to the fixed ring, and a screw is rotatably connected to the side of the connecting parts away from each other, and a sprocket is fixed to the side of the screw away from the connecting part. A chain is meshed between the sprockets, and a number of connecting rods are symmetrically fixed on the chain. A telescopic rod is fixed to the side of the connecting rods away from each other, and a blocking member is fixed to the telescopic end of the telescopic rod, and the side of the blocking member away from each other is set as an inclined surface.

[0009] Furthermore, it also includes a plurality of sliding members, which are fixedly connected to the telescopic member in a circumferential direction, and the sliding members are threadedly connected to the screw.

[0010] Furthermore, it also includes a plurality of telescopic springs, which are fixed between the blocking member and the telescopic rod.

[0011] Furthermore, it also includes a blocking mechanism that can prevent debris from flying into the protective shell when the skateboard moves forward. The blocking mechanism includes a number of fixing parts, which are symmetrically fixed to the protective shell. A number of fixing rods are symmetrically rotatably connected between the fixing parts. A blocking plate is fixed on the fixing rod, and a number of second torsion springs are fixed between the blocking plate and the fixing parts.

[0012] Furthermore, it also includes a fixing mechanism that can prevent the battery from moving left and right when people are not using the skateboard and are moving with the skateboard. The fixing mechanism includes multiple connecting rods, and every two connecting rods are symmetrically fixed on the same fixing member. The connecting rods are slidably connected to the sliding rods.

[0013] Furthermore, it also includes a plurality of compression springs, which are respectively fixed between different sliding rods and connecting rods.

[0014] Furthermore, it also includes a plurality of clamping members, and every two clamping members are symmetrically fixed on the bottom of the base plate, and the clamping members are engaged with the corresponding sliding rods.

[0015] The beneficial effects are: 1. When the device of the present invention encounters objects such as stones during driving, the protective shell will be pushed by the object to move in the opposite direction of the forward movement. Under the action of the storage spring, the protective shell can be buffered, thereby reducing the impact on the protective shell and avoiding severe impact on the protective shell and the battery inside it, thereby protecting the battery and preventing the battery from being deformed and short-circuited due to severe impact.

[0016] 2. In the present invention, when the protective shell is squeezed and moved upward by an object, the telescopic parts will drive the sliding parts to move upward, so that the screws will drive the sprockets to start rotating, the sprockets will drive the chains and then the connecting rods to rotate, the connecting rods will drive the telescopic rods and then the blocking parts to rotate. The rotating blocking parts can push away the objects squeezing the protective shell, thereby preventing the objects from excessively squeezing the protective shell and causing damage to the protective shell, and avoiding continuous squeezing of the battery by the objects.

[0017] 3. The present invention provides a blocking plate, which can prevent impurities on both sides from flying into the interior of the protective shell.

[0018] 4. The present invention provides a locking member and a sliding rod, and the corresponding sliding rod and the locking member are engaged with each other, so that when people are not skateboarding, the battery can be prevented from moving left and right due to the movement of the skateboard, thereby reducing the collision of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a sectional view of the three-dimensional structure of the protective shell, telescopic member, pressure spring and other components of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the bolt, protective shell, bottom plate and other components of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing group, guide rod, storage spring and other components of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the telescopic member, pressure spring, wire and other components of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide rod, force storage spring, lead ball and other components of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the bottom plate, protective shell, telescopic member and other components of the present invention.

[0026] Figure 8This is a sectional view of the three-dimensional structure of the first torsion spring, wires, bottom plate and other components of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the connector, protective shell, pressure spring and other components of the present invention.

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of components such as the screw, sprocket and chain of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the connecting rod, telescopic rod, telescopic spring and other components of the present invention.

[0030] Figure 12 It is a schematic diagram of the three-dimensional structure of the fixing member, the second torsion spring and the fixing rod of the present invention.

[0031] Figure 13 It is a schematic diagram of the three-dimensional structure of the connecting rod, compression spring, and locking member of the present invention.

[0032] Figure 14 It is a schematic diagram of the three-dimensional structure of the connecting rod, sliding rod, and locking member of the present invention.

[0033] Figure numbers: 1_base plate, 11_battery, 12_protective shell, 13_telescopic part, 131_fixing ring, 14_pressure spring, 15_electric wire, 16_first torsion spring, 17_fixing group, 18_guide rod, 19_storage spring, 110_lead ball, 111-bolt, 2_connecting part, 21_sliding part, 22_screw, 23_sprocket, 24_chain, 25_connecting rod, 26_telescopic rod, 27_telescopic spring, 28_blocking part, 3_fixing part, 31_second torsion spring, 32_fixing rod, 33_blocking plate, 4_connecting stick, 41_sliding rod, 42_compression spring, 43_locking part. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings.

[0035] Example 1: A lithium battery with protective function, see Figures 1-8, includes a base plate 1, which is fixed to the skateboard by bolts 111 on the left and right sides. A guide rod 18 is fixed to the middle of the base plate 1, and a telescopic member 13 is slidably connected to the guide rod 18. The left and right sides of the telescopic member 13 are fixedly connected to the base plate 1 with a storage spring 19. A fixing ring 131 is fixed to the telescopic end of the telescopic member 13, and a pressure spring 14 is fixedly connected between the lower side of the fixing ring 131 and the telescopic member 13. A battery 11 is fixed to the lower side of the telescopic member 13, and the outer side of the battery 11 is covered with a protective shell 12. The left and right sides of the lower part of the protective shell 12 are provided with inclined surfaces. The right part of the base plate 1 is rotatably connected to a rotating shaft, and a first torsion spring 16 is fixedly connected between the rotating shaft and the base plate 1. A counterweight assembly that can keep the base plate 1 balanced is connected to the base plate 1.

[0036] See also Figure 4 、 Figure 5 、 Figure 6 and Figure 8 , also includes a wire 15, one end of the wire 15 is fixedly connected to the right part of the skateboard, the other end of the wire 15 passes through the central axis of the rotating shaft, passes through the rotating shaft, is wound around the rotating shaft, and then is fixedly connected to the telescopic member 13.

[0037] See also Figure 4-Figure 6 The counterweight assembly includes a fixed group 17, which is fixed inside the base plate 1. The fixed group 17 consists of six fixed blocks and two front and rear ropes. The six fixed blocks form a group of two, and the two fixed blocks in each group are symmetrically fixed at the front, middle and rear parts of the base plate 1. The ropes are slidably connected between the two adjacent groups of fixed blocks, and the ropes are fixedly connected to the telescopic member 13. The ropes are fixed with a lead ball 110.

[0038] If the battery 11 cannot be well protected, when the lithium battery 11 is hit or squeezed, the internal structure may be damaged, forming an internal short circuit. The internal short circuit will cause the battery 11 to heat up rapidly, and even cause a fire or explosion, thereby endangering people's lives. Based on this, the present application takes the following measures to deal with the above-mentioned situation: First, people first fix the bottom plate 1 to the lower side of the skateboard with bolts 111. When people use the skateboard, they will encounter objects such as stones. These objects will squeeze the protective shell 12, causing the protective shell 12 to move backward relative to the forward direction. When the skateboard moves to the right, the protective shell 12 drives the battery 11 and then drives the telescopic part 13 to move to the left, and the storage spring 19 on the left is compressed. The storage spring 19 on the right is stretched, and under the action of the storage spring 19, the protective shell 12 can be cushioned, thereby reducing the impact on the protective shell 12 and preventing the protective shell 12 and the battery 11 therein from being subjected to severe collisions. The telescopic member 13 pulls the two ropes to the left, so that the ropes on the front and rear sides are pulled to the right, and the ropes drive the lead ball 110 to move to the right, the battery 11 moves to the left, and the lead ball 110 moves to the right, which can keep the weight on the left and right sides similar, thereby maintaining the balance of the skateboard. The telescopic member 13 moves to the left, which pulls the wire 15, causing the wire 15 to be pulled out, and the first torsion spring 16 is twisted. When the protective shell 12 moves to the left to the leftmost part of the guide rod 18, the protective shell 12 can no longer continue to move to the left, because the lower part of the protective shell 12 is set to an inclined surface, so the protective shell 12 will be squeezed upward by the object, and the protective shell 12 drives the battery 11 and then drives the lower part of the telescopic member 13 to move upward, and the pressure spring 14 is compressed. The protective shell 12 moves upward to allow the object to pass. When the object is separated from the protective shell 12, the pressure spring 14 resets and drives the lower part of the telescopic member 13 and then drives the battery 11 to move downward and reset. The battery 11 drives the protective shell 12 to move downward and reset. The storage spring 19 resets and drives the telescopic member 13 to move right and reset. The telescopic member 13 drives the battery 11 and then drives the protective shell 12 to move right and reset. The telescopic member 13 no longer pulls the wire 15. The first torsion spring 16 resets and drives the wire 15 to be rewound around the rotating shaft on the right part of the skateboard. When the skateboard encounters objects such as stones during driving, the protective shell 12 will be pushed by the object to move in the opposite direction of the forward movement. Under the action of the storage spring 19, the protective shell 12 can be buffered, thereby reducing the impact on the protective shell 12 and preventing the protective shell 12 and the battery 11 therein from being subjected to severe collisions, thereby protecting the battery 11 and preventing the battery 11 from being deformed and short-circuited due to severe collisions.

[0039] Example 2: Based on Example 1, please refer to Figures 9-11, and also includes a pushing component that can push away an object that hits the protective shell 12. The pushing component includes four connecting parts 2, which are all circumferentially fixedly connected to the fixing ring 131, and the sides of the connecting parts 2 that are away from each other are rotatably connected to the screw rods 22, and the lower sides of the screw rods 22 are fixed with sprockets 23, and the sprockets 23 are engaged with chains 24. Connecting rods 25 are fixed on the front and rear sides of the chain 24, and telescopic rods 26 are fixed on the sides of the connecting rods 25 that are away from each other. Blocking members 28 are fixed on the telescopic ends of the telescopic rods 26, and the sides of the blocking members 28 that are away from each other are set as inclined surfaces.

[0040] See also Figure 10 , further comprising four sliding members 21 , each of which is circumferentially fixedly connected to the telescopic member 13 , and each of the sliding members 21 is threadedly connected to the corresponding screw rods 22 .

[0041] See also Figure 11 , further comprising two telescopic springs 27 , which are respectively fixed between different blocking members 28 and the telescopic rod 26 .

[0042] When an object hits the protective shell 12, in order to prevent the object from continuously squeezing the battery 11, a pushing mechanism that can push the object away is provided. The working principle is as follows: when an object hits the protective shell 12, the protective shell 12 will be pushed by the object and start to move. When the protective shell 12 moves to the limit position, the protective shell 12 cannot move further. The object continues to squeeze the protective shell 12. Because the lower part of the protective shell 12 is provided with an inclined surface, the protective shell 12 will be squeezed upward by the object. The protective shell 12 drives the battery 11 to move upward, and the battery 11 drives the lower part of the telescopic member 13 to move upward. The pressure spring The spring 14 is compressed, and the lower part of the telescopic member 13 drives the sliding member 21 to move upward. The sliding member 21 is threadedly connected to the screw rod 22. The sliding member 21 moves upward, so that the screw rod 22 starts to rotate, and the screw 22 drives the sprocket 23 to start rotating forward. The sprocket 23 drives the chain 24 to start rotating forward. The chain 24 drives the connecting rod 25 to rotate forward. The connecting rod 25 drives the telescopic rod 26 and then drives the blocking member 28 to rotate forward. The blocking member 28 rotates around the periphery of the protective shell 12. Because the side of the blocking member 28 away from each other is set as an inclined surface, the rotating blocking member 28 can move the protective shell 12 around The object around it is pushed away, and at the same time, under the action of the telescopic spring 27, the blocking member 28 can be in close contact with the outer side of the protective shell 12, so that the blocking member 28 has a better effect of pushing the object away. When the object is pushed away, the protective shell 12 is no longer squeezed, and the pressure spring 14 is reset to drive the lower part of the telescopic member 13 to move downward and reset. The telescopic member 13 drives the battery 11 and then drives the protective shell 12 to move downward and reset. The telescopic member 13 drives the sliding member 21 to move downward and reset, so that the screw rod 22 starts to reverse, the screw 22 drives the sprocket 23 and then drives the chain 24 to reverse, and the chain 24 drives the connecting rod 25 This will drive the telescopic rod 26 to reverse, and the telescopic rod 26 drives the blocking member 28 to reverse and reset. When the protective shell 12 is squeezed and moved upward by an object, the telescopic member 13 will drive the sliding member 21 to move upward, so that the screw 22 drives the sprocket 23 to start rotating, the sprocket 23 drives the chain 24 and then drives the connecting rod 25 to rotate, the connecting rod 25 drives the telescopic rod 26 and then drives the blocking member 28 to rotate. The rotating blocking member 28 can push away the object that squeezes the protective shell 12, thereby preventing the object from excessively squeezing the protective shell 12 and causing damage to the protective shell 12, and avoiding continuous squeezing of the battery 11 by the object.

[0043] See also Figure 12 , and also includes a blocking mechanism that can prevent debris from flying into the protective shell 12 in front when the skateboard moves forward. The blocking mechanism includes two fixing parts 3, which are fixedly connected to the front and rear sides of the protective shell 12 respectively. A fixing rod 32 is rotatably connected between the left and right sides of the fixing part 3, and a blocking plate 33 is fixed on the fixing rod 32. A second torsion spring 31 is fixed between the front and rear sides of the blocking plate 33 and the fixing part 3.

[0044] Because the skateboard moves back and forth during travel, stones or debris may fly into the interior of the protective shell 12 due to the skateboard's excessive speed. Therefore, a blocking mechanism that can block impurities is provided. The following is its working principle: When the skateboard is traveling, the skateboard will drive impurities on the road to fly toward the protective shell 12, and then the impurities will hit the blocking plate 33. When the impurities on the left hit the blocking plate 33 on the left, the blocking plate 33 on the left will rotate clockwise, and the second torsion spring 31 on the left will be twisted. However, under the action of the second torsion spring 31 on the left, the blocking plate 33 on the left will not rotate a large angle. When the force of the impurities hitting the blocking plate 33 on the left is less than the force of the second torsion spring 31 on the left to reset, the second torsion spring 31 on the left will reset and drive the blocking plate 33 on the left. When the impurities hit the right baffle plate 33, the right baffle plate 33 rotates counterclockwise to reset. The left baffle plate 33 will bounce off the impurities flying from the left. Similarly, when the impurities on the right hit the right baffle plate 33, the right baffle plate 33 will rotate counterclockwise, and the second torsion spring 31 on the right will be twisted. When the force of the impurities hitting the right baffle plate 33 is less than the force of the right second torsion spring 31 to reset, the right second torsion spring 31 will reset and drive the right baffle plate 33 to rotate clockwise to reset. The right baffle plate 33 will bounce off the impurities flying from the right, thereby preventing impurities on both sides from flying into the interior of the protective shell 12, thereby avoiding the impact of impurities flying into the battery 11. The above operation is carried out by setting the baffle plate 33. Under the blocking effect of the baffle plate 33, impurities on both sides can be prevented from flying into the interior of the protective shell 12.

[0045] See also Figure 13-14 , and also includes a fixing mechanism that can prevent the battery 11 from moving left and right when people are not using the skateboard and are moving with the skateboard. The fixing mechanism includes four connecting rods 4, and every two connecting rods 4 are respectively fixed on the left and right sides of the same fixing member 3, and the connecting rods 4 are slidably connected to the sliding rods 41.

[0046] See also Figure 12-13 , also includes four compression springs 42, which are respectively fixed between different sliding rods 41 and the connecting rod 4.

[0047] See also Figure 12-13 , and also includes four locking members 43, two of which are fixed on the left and right sides of the lower front side of the base plate 1, and the other two are fixed on the left and right sides of the lower rear side of the base plate 1. The locking members 43 are all engaged with the corresponding sliding rods 41.

[0048] When people are not skating, they move with the skateboard. In order to prevent the battery 11 from moving left and right when the skateboard moves, a fixing mechanism is provided to fix the battery 11 and prevent the battery 11 from sliding. The working principle is as follows: when people need to fix the battery 11, they can manually drive the fixing member 3 to move left or right, and the fixing member 3 drives the connecting rod 4 and then drives the sliding rod 41 to move left or right. When the sliding rod 41 contacts the corresponding locking member 43, people manually drive the sliding rod 41 to move in the direction of compressing the compression spring 42, and the corresponding The compression springs 42 are all compressed, and then people manually drive the sliding rods 41 to engage with the corresponding locking pieces 43. Then people loosen the sliding rods 41, and the corresponding compression springs 42 are reset, so that the sliding rods 41 cannot move left and right, and thus the battery 11 cannot move left and right. The above operation is performed by setting the locking pieces 43 and the sliding rods 41, and the corresponding sliding rods 41 are engaged with the locking pieces 43, so that when people are not sliding the skateboard, the battery 11 can be prevented from moving left and right due to the movement of the skateboard, thereby reducing the collision with the battery 11.

[0049] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A lithium battery with a protective function, comprising a base plate (1), a guide rod (18) fixed on the base plate (1), characterized in that: The invention also includes a telescopic member (13), the telescopic member (13) is slidably connected to the guide rod (18), a plurality of force storage springs (19) are symmetrically fixedly connected between the telescopic member (13) and the base plate (1), a fixed ring (131) is fixedly connected to the telescopic end of the telescopic member (13), a pressure spring (14) is fixedly connected between the fixed ring (131) and the telescopic member (13), a battery (11) is fixed on the telescopic member (13), the outer side of the battery (11) is covered with a protective shell (12), and an inclined surface is provided on the protective shell (12), a rotating shaft is rotatably connected to the base plate (1), a first torsion spring (16) is fixedly connected between the rotating shaft and the base plate (1), and a counterweight assembly capable of maintaining the balance of the base plate (1) is connected to the base plate (1).

2. A lithium battery with a protective function according to claim 1, characterized in that: The utility model also includes an electric wire (15), one end of which is fixedly connected to a side of the slide plate close to the first torsion spring (16), and the other end of which passes through the central axis of the rotating shaft, passes out of the rotating shaft, is wound around the rotating shaft, and is fixedly connected to the telescopic member (13).

3. The lithium battery with protective function according to claim 2, characterized in that: The counterweight assembly includes a fixed group (17), which is fixed on the base plate (1). The fixed group (17) is composed of a plurality of fixed blocks and a plurality of ropes, wherein two fixed blocks form a group, and the two fixed blocks in each group are symmetrically fixed in the base plate (1). The ropes are respectively slidably connected between two adjacent groups of fixed blocks, and the ropes are fixedly connected to the telescopic member (13). Lead balls (110) are symmetrically fixed on the ropes.

4. The lithium battery with protective function according to claim 3, characterized in that: The invention also includes a pushing assembly capable of pushing away an object that hits the protective shell (12), the pushing assembly including a plurality of connecting members (2), the connecting members (2) being fixedly connected to the fixing ring (131) in a circumferential direction, a screw rod (22) being rotatably connected to the side of the connecting members (2) away from each other, a sprocket (23) being fixed to the side of the screw rod (22) away from the connecting member (2), a chain (24) being meshed between the sprockets (23), a plurality of connecting rods (25) being symmetrically fixed to the chain (24), a telescopic rod (26) being fixed to the side of the connecting rods (25) away from each other, a blocking member (28) being fixed to the telescopic end of the telescopic rod (26), and a side of the blocking member (28) away from each other being set as an inclined surface.

5. The lithium battery with protective function according to claim 4, characterized in that: It also includes a plurality of sliding members (21), which are fixedly connected to the telescopic member (13) in the circumferential direction, and the sliding members (21) are threadedly connected to the screw rod (22).

6. The lithium battery with protective function according to claim 5, characterized in that: The invention also comprises a plurality of telescopic springs (27), which are fixed between the blocking member (28) and the telescopic rod (26).

7. The lithium battery with protective function according to claim 6, characterized in that: The invention also includes a blocking mechanism capable of preventing debris from flying into the interior of the protective shell (12) when the slide moves forward. The blocking mechanism includes a plurality of fixing members (3), the fixing members (3) are symmetrically fixedly connected to the protective shell (12), a plurality of fixing rods (32) are symmetrically rotatably connected between the fixing members (3), a blocking plate (33) is fixed on the fixing rods (32), and a plurality of second torsion springs (31) are fixed between the blocking plate (33) and the fixing members (3).

8. The lithium battery with protective function according to claim 7, characterized in that: The invention also includes a fixing mechanism capable of preventing the battery (11) from moving left and right when the skateboard is not in use and when people are moving with the skateboard. The fixing mechanism includes a plurality of connecting rods (4), and every two connecting rods (4) are symmetrically fixed on the same fixing member (3). The connecting rods (4) are slidably connected to a sliding rod (41).

9. The lithium battery with protective function according to claim 8, characterized in that: It also includes a plurality of compression springs (42), which are respectively fixed between different sliding rods (41) and the connecting rod (4).

10. The lithium battery with protective function according to claim 9, characterized in that: It also includes a plurality of clamping members (43), with every two clamping members (43) symmetrically fixed on the bottom of the base plate (1), and the clamping members (43) being clamped and matched with the corresponding sliding rods (41).

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