Electric vehicle carrying ultrahigh-energy-density lithium battery

Abstract

The invention relates to the technical field of lithium batteries, and particularly discloses an electric vehicle carrying an ultrahigh-energy-density lithium battery, which comprises an electric vehicle main body, a lithium battery pack is carried in the electric vehicle main body, and the lithium battery pack is connected with the electric vehicle main body through a charging wire; the heating mechanism is located in the electric vehicle main body, and the heating mechanism can heat the lithium battery pack; the temperature control mechanism is located between the electric vehicle body and the lithium battery pack, and the temperature control mechanism can control the environment temperature of the lithium battery pack. When the electric vehicle is used, the lithium battery pack can be heated through the heating mechanism according to different internal temperatures of the electric vehicle body, so that the electricity storage capacity of the lithium battery pack is improved; and when the electric vehicle body is charged every time, the temperature control mechanism automatically controls the internal temperature of the electric vehicle body, so that the lithium battery pack is in the optimal temperature environment, and the service life of the lithium battery pack is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to an electric vehicle equipped with an ultra-high energy density lithium battery. Background Art

[0002] An electric vehicle is a vehicle that uses a battery as an auxiliary energy source and is based on an ordinary bicycle and is equipped with a motor, controller, battery, handlebar, brake handle and other operating components and a display instrument system. Electric vehicles are in line with the national energy-saving and environmental protection trends and have greatly facilitated short-distance transportation. Due to the functional advantages of electric bicycles such as low price, convenience and environmental protection, they are loved by more and more people.

[0003] In winter, as the temperature drops, the activity of various substances in the lithium battery of electric bicycles will decrease, the viscosity of the battery electrolyte will increase, and the resistance of chemical reactions will also increase. Low temperature will also cause the positive and negative electrode materials of the battery to shrink, resulting in a decrease in the number of lithium ions that can be embedded. The actual capacity of the battery is reduced, resulting in poor storage capacity, which affects the user's riding. For this reason, we propose an electric vehicle equipped with an ultra-high energy density lithium battery. Summary of the invention

[0004] The purpose of the present invention is to provide an electric vehicle equipped with an ultra-high energy density lithium battery to solve the problem raised in the above background technology that as the temperature drops, the activity of various substances in the lithium battery of the electric bicycle will decrease, the viscosity of the battery electrolyte will increase, the chemical reaction resistance will also increase, and the low temperature will also cause the positive and negative electrode materials of the battery to shrink, resulting in a decrease in the number of lithium ions that can be embedded, a decrease in the actual capacity of the battery, resulting in a deterioration in the storage capacity, and affecting the user's riding.

[0005] To achieve the above object, the present invention provides the following technical solution: an electric vehicle equipped with an ultra-high energy density lithium battery, comprising an electric vehicle body, wherein a lithium battery pack is mounted inside the electric vehicle body, and the lithium battery pack is connected to the electric vehicle body via a charging wire; A heating mechanism, the heating mechanism is located inside the electric vehicle body, and the heating mechanism can heat the lithium battery pack; A temperature control mechanism is located between the electric vehicle body and the lithium battery pack, and the temperature control mechanism can control the ambient temperature of the lithium battery pack.

[0006] Among them, a loading slot is arranged inside the electric vehicle body, a battery box is loaded inside the loading slot, a lithium battery pack is loaded inside the battery box, and the charging wire runs through the battery box and is connected to the charging port circuit of the electric vehicle body.

[0007] Wherein, the heating mechanism comprises a plurality of heating plates fixedly connected to the inner wall of the battery box, the heating plates are arranged in a ring shape, a heating chip is fixedly connected to the outer wall of the battery box, and the heating plates are connected to the heating chip circuit.

[0008] Among them, a piston cylinder is fixedly connected to the inner wall of the battery box, and the piston cylinder is located on one side of the lithium battery pack. A piston pad is slidably connected to the inside of the piston cylinder, and the piston pad is fixedly connected to a piston rod at one end away from the piston cylinder. The piston rod is slidably connected to the piston cylinder, and the end of the piston rod away from the piston pad is located outside the piston cylinder. A trigger component that can trigger the start and stop of the heating chip is provided at the end of the piston rod away from the piston pad.

[0009] Wherein, the trigger member comprises a connecting rod fixedly connected to one end of the piston rod away from the piston pad, the connecting rod is fixedly connected to one end of the piston rod away from the piston rod, and the trigger rod is located above the heating chip at one end of the connecting rod away from the connecting rod.

[0010] The outer wall of the battery box is provided with a trigger groove, the trigger rod is U-shaped, the trigger rod passes through the trigger groove, and one end of the trigger rod away from the connecting rod is located outside the battery box.

[0011] Wherein, a baffle is fixedly connected to the outer wall of the connecting rod, a plurality of heat dissipation slots are provided in the battery box, the heat dissipation slots are located below the heating plate, and the baffle is located below the heating plate.

[0012] Among them, the temperature control mechanism includes a base arranged around the charging wire, the base is fixedly connected to the charging wire, the bottom of the base is fixedly connected to the inner wall of the battery box, a magnet is arranged above the base, the magnet is located above the charging wire, a sliding rod is fixedly connected to one end of the magnet close to the piston cylinder, the end of the sliding rod away from the magnet abuts against the outer wall of the piston cylinder, the piston cylinder has an air guide hole, and the sliding rod is located around the air guide hole.

[0013] The inner wall of the battery box is fixedly connected to a limit box, the inside of the limit box is fixedly connected to a limit rod, limit grooves are provided on both sides of the sliding rod, and the limit rod is located in the limit groove and slidably connected to the limit groove.

[0014] The present invention has at least the following beneficial effects: When the present invention is in use, the lithium battery pack can be heated by the heating mechanism according to the internal temperature of the electric vehicle body, thereby increasing the storage capacity of the lithium battery pack. Each time the electric vehicle body is charged, the internal temperature of the electric vehicle body is automatically controlled by the temperature control mechanism, so that the lithium battery pack is in an optimal temperature environment, thereby extending the service life of the lithium battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the electric vehicle of the present invention; Figure 2 This is a schematic diagram of the structure of the electric vehicle carrying slot of the present invention; Figure 3 This is a schematic diagram of the structure of the lithium battery pack of the present invention; Figure 4 It is a schematic diagram of the overall structure of the battery box of the present invention; Figure 5 This is a schematic diagram of the internal structure of the battery box of the present invention; Figure 6 This is a schematic diagram of the back structure of the battery box of the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the middle A area; Figure 8 It is a schematic diagram of the cross-sectional structure of the baffle part of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the piston cylinder of the present invention; Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of the middle B area; Fig.11 It is a schematic diagram of the cross-sectional structure of the limit box of the present invention; Fig.12 for Fig.11 Schematic diagram of the enlarged structure of area C in the middle.

[0016] In the figure: 1. Electric vehicle body; 11. Lithium battery pack; 12. Charging wire; 13. Loading slot; 14. Battery box; 2. Heating mechanism; 21. Heating plate; 22. Heating chip; 23. Piston cylinder; 24. Piston pad; 25. Piston rod; 3. Temperature control mechanism; 31. Base; 32. Magnet; 33. Sliding rod; 34. Air guide hole; 35. Limit box; 36. Limit rod; 37. Limit slot; 4. Trigger member; 41. Connecting rod; 42. Trigger rod; 43. Trigger slot; 44. Baffle; 45. Heat dissipation slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-12 , the present invention provides a technical solution: an electric vehicle equipped with an ultra-high energy density lithium battery, comprising an electric vehicle body 1, a lithium battery pack 11 is mounted inside the electric vehicle body 1, and the lithium battery pack 11 is connected to the electric vehicle body 1 through a charging wire 12; A heating mechanism 2, which is located inside the electric vehicle body 1 and can heat the lithium battery pack 11; A temperature control mechanism 3, which is located between the electric vehicle body 1 and the lithium battery pack 11, and can control the ambient temperature of the lithium battery pack 11; When the present invention is in use, the heating mechanism 2 can heat the lithium battery pack 11 according to the internal temperature of the electric vehicle body 1, thereby increasing the storage capacity of the lithium battery pack 11, and each time the electric vehicle body 1 is charged, the internal temperature of the electric vehicle body 1 is automatically controlled by the temperature control mechanism 3, so that the lithium battery pack 11 is in an optimal temperature environment, thereby extending the service life of the lithium battery pack 11.

[0019] A loading slot 13 is provided inside the electric vehicle body 1, and a battery box 14 is loaded inside the loading slot 13. A lithium battery pack 11 is loaded inside the battery box 14. A charging wire 12 runs through the battery box 14 and is connected to the charging port circuit of the electric vehicle body 1. When the electric vehicle body 1 is charged and used, the direction of the current flowing through the charging wire 12 is different. Since the magnetic field is directional, when the current direction changes, not only the direction of the magnetic field will change, but also the way the magnetic field acts on the surrounding magnetic materials will change accordingly. This paves the way for the temperature control mechanism 3 to control the internal temperature of the electric vehicle body 1 in the charging state.

[0020] The heating mechanism 2 includes a plurality of heating plates 21 fixedly connected to the inner wall of the battery box 14, the heating plates 21 are arranged in a ring shape, a heating chip 22 is fixedly connected to the outer wall of the battery box 14, and the heating plates 21 are connected to the heating chip 22 in a circuit; The inner wall of the battery box 14 is fixedly connected with a piston cylinder 23, the piston cylinder 23 is located on one side of the lithium battery pack 11, the piston cylinder 23 is slidably connected with a piston pad 24, the piston pad 24 is fixedly connected with a piston rod 25 at one end away from the piston cylinder 23, the piston rod 25 is slidably connected with the piston cylinder 23, the end of the piston rod 25 away from the piston pad 24 is located outside the piston cylinder 23, and the end of the piston rod 25 away from the piston pad 24 is provided with a trigger 4 that can trigger the start and stop of the heating chip 22; The trigger member 4 includes a connecting rod 41 fixedly connected to one end of the piston rod 25 away from the piston pad 24, and a trigger rod 42 is fixedly connected to one end of the connecting rod 41 away from the piston rod 25, and one end of the trigger rod 42 away from the connecting rod 41 is located above the heating chip 22; The outer wall of the battery box 14 is provided with a trigger slot 43, and the trigger rod 42 is U-shaped. The trigger rod 42 passes through the trigger slot 43, and one end of the trigger rod 42 away from the connecting rod 41 is located outside the battery box 14; The outer wall of the connecting rod 41 is fixedly connected with a baffle 44. The battery box 14 is provided with a plurality of heat dissipation slots 45. The heat dissipation slots 45 are located below the heating plate 21. The baffle 44 is located below the heating plate 21. When the electric vehicle body 1 is used normally in winter, due to the low temperature outside and inside the electric vehicle body 1, as the temperature drops, the activity of various substances in the battery will decrease, resulting in poor storage capacity. Generally, the battery can store electricity normally and discharge to the maximum at about 25°C, but below 15°C, the charging and storage capacity of the battery will decrease. In order to avoid affecting the user's riding experience, the piston pad 24 located inside the piston cylinder 23 is in a lower position, and the piston pad 24 drives the connecting rod 41 to move downward through the piston rod 25. At this time, the baffle 44 located outside the connecting rod 41 blocks the heat dissipation groove 45 and exposes the heating plate 21. Since the trigger rod 42 at the end of the connecting rod 41 is U-shaped and the trigger rod 42 slides in the trigger groove 43, the trigger rod 42 close to the end of the heating chip 22 can move up and down synchronously with the connecting rod 41. When the end of the trigger rod 42 abuts against the heating chip 22, the heating chip 22 drives the heating plate 21 to generate heat, which is convenient for heating the inside of the battery box 14. When the temperature inside the battery box 14 is too high, the air inside the piston cylinder 23 begins to expand, and the expanded gas pushes the piston pad 24 and drives the connecting rod 41 to move upward through the piston rod 25. On the one hand, the connecting rod 41 pushes the trigger rod 42 to move upward, and the trigger rod 42 is out of contact with the heating chip 22. After the heating plate 21 is powered off, it no longer heats the inside of the battery box 14; on the other hand, when the connecting rod 41 moves upward, it can drive the baffle 44 to move upward. At this time, the baffle 44 no longer blocks the heat dissipation slot 45. The heat dissipation slot 45 is opened slightly to balance the internal temperature of the battery box 14, so that the lithium battery pack 11 is in the best state.

[0021] The temperature control mechanism 3 includes a base 31 arranged outside the charging wire 12, the base 31 is fixedly connected to the charging wire 12, the bottom of the base 31 is fixedly connected to the inner wall of the battery box 14, a magnet 32 ​​is arranged above the base 31, the magnet 32 ​​is located above the charging wire 12, a sliding rod 33 is fixedly connected to one end of the magnet 32 ​​close to the piston cylinder 23, the end of the sliding rod 33 away from the magnet 32 ​​abuts against the outer wall of the piston cylinder 23, the piston cylinder 23 is provided with an air guide hole 34, and the sliding rod 33 is located outside the air guide hole 34; The inner wall of the battery box 14 is fixedly connected to a limit box 35 , the inner part of the limit box 35 is fixedly connected to a limit rod 36 , and limit grooves 37 are provided on both sides of the sliding rod 33 . The limit rod 36 is located in the limit groove 37 and is slidably connected to the limit groove 37 .

[0022] When the electric vehicle body 1 is charged, according to the Oersted experiment and the Biot-Savart law, the current will generate a magnetic field around it. The strength and direction of the magnetic field depend on the magnitude and direction of the current and the shape of the wire. According to the right-hand screw rule (Ampere's law), if the direction of the current changes, the direction of the generated magnetic field will also change accordingly. The direction of the current flowing through the charging wire 12 changes, so that the magnet 32 ​​is subjected to a repulsive magnetic force. When the magnet 32 ​​slides upward, it drives the sliding rod 33 to slide inside the limit box 35. The limit rod 36 located inside the limit box 35 slides inside the limit slot 37 opened by the sliding rod 33, which can ensure that the sliding rod 33 keeps moving up and down horizontally; When the sliding rod 33 moves upward, the sliding rod 33 no longer blocks the air guide hole 34 opened by the piston cylinder 23. At this time, the heating mechanism 2 heats the inside of the battery box 14, and the piston rod 25 no longer rises to open the heat dissipation slot 45, so that the lithium battery pack 11 is charged in a warm environment, thereby avoiding the increase of the viscosity of the electrolyte of the lithium battery pack 11, resulting in an increase in the chemical reaction resistance, and further affecting the charging and discharging performance of the lithium battery pack 11. As the use time increases, the storage capacity of the lithium battery pack 11 will gradually recover, avoiding the aging of the lithium battery pack 11.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle equipped with an ultra-high energy density lithium battery, comprising: An electric vehicle body (1), wherein a lithium battery pack (11) is mounted inside the electric vehicle body (1), and the lithium battery pack (11) and the electric vehicle body (1) are connected via a charging wire (12); It is characterized by further comprising: The electric vehicle body (1) is provided with a loading slot (13) inside, a battery box (14) is loaded inside the loading slot (13), a lithium battery pack (11) is loaded inside the battery box (14), and the charging wire (12) passes through the battery box (14) and is connected to the charging port circuit of the electric vehicle body (1); A heating mechanism (2), the heating mechanism (2) being located inside the electric vehicle body (1), the heating mechanism (2) comprising a plurality of heating plates (21) fixedly connected to the inner wall of the battery box (14), the heating plates (21) being arranged in a ring shape, a heating chip (22) being fixedly connected to the outer wall of the battery box (14), the heating plates (21) being circuit-connected to the heating chip (22); A temperature control mechanism (3) is located between the electric vehicle body (1) and the lithium battery pack (11), and comprises a base (31) arranged outside the charging wire (12), the base (31) being fixedly connected to the charging wire (12), the bottom of the base (31) being fixedly connected to the inner wall of the battery box (14), a magnet (32) being arranged above the base (31), the magnet (32) being located above the charging wire (12), a sliding rod (33) being fixedly connected to one end of the magnet (32) close to the piston cylinder (23), the end of the sliding rod (33) away from the magnet (32) abutting against the outer wall of the piston cylinder (23), the piston cylinder (23) being provided with an air guide hole (34), and the sliding rod (33) being located outside the air guide hole (34).

2. The electric vehicle equipped with an ultra-high energy density lithium battery according to claim 1, characterized in that: A piston cylinder (23) is fixedly connected to the inner wall of the battery box (14), the piston cylinder (23) is located on one side of the lithium battery pack (11), a piston pad (24) is slidably connected to the interior of the piston cylinder (23), an end of the piston pad (24) away from the piston cylinder (23) is fixedly connected to a piston rod (25), the piston rod (25) is slidably connected to the piston cylinder (23), the end of the piston rod (25) away from the piston pad (24) is located outside the piston cylinder (23), and a triggering member (4) capable of triggering the start and stop of the heating chip (22) is provided at the end of the piston rod (25) away from the piston pad (24).

3. The electric vehicle equipped with an ultra-high energy density lithium battery according to claim 2, characterized in that: The trigger member (4) comprises a connecting rod (41) fixedly connected to one end of the piston rod (25) away from the piston pad (24); the end of the connecting rod (41) away from the piston rod (25) is fixedly connected to a trigger rod (42); the end of the trigger rod (42) away from the connecting rod (41) is located above the heating chip (22).

4. The electric vehicle equipped with an ultra-high energy density lithium battery according to claim 3, characterized in that: The outer wall of the battery box (14) is provided with a trigger groove (43); the trigger rod (42) is U-shaped; the trigger rod (42) passes through the trigger groove (43); and one end of the trigger rod (42) away from the connecting rod (41) is located outside the battery box (14).

5. The electric vehicle equipped with an ultra-high energy density lithium battery according to claim 4, characterized in that: The outer wall of the connecting rod (41) is fixedly connected with a baffle (44); the battery box (14) is provided with a plurality of heat dissipation slots (45); the heat dissipation slots (45) are located below the heating plate (21); and the baffle (44) is located below the heating plate (21).

6. The electric vehicle equipped with an ultra-high energy density lithium battery according to claim 1, characterized in that: The inner wall of the battery box (14) is fixedly connected to a limit box (35), the interior of the limit box (35) is fixedly connected to a limit rod (36), both sides of the sliding rod (33) are provided with limit grooves (37), and the limit rod (36) is located in the limit grooves (37) and is slidably connected to the limit grooves (37).

Images