A hybrid starting system based on supercapacitors and lead-acid batteries

Abstract

The application discloses a kind of composite starting system based on super capacitor and lead-acid battery, it is related to vehicle battery technical field, including lead-acid battery unit, super capacitor unit, DC-DC converter, energy management control unit and starting load unit, the lead-acid battery unit and super capacitor unit are respectively connected to DC-DC converter by corresponding current detection point I1 and I2, the output of DC-DC converter is connected to starting load unit by current detection point I3, the energy management control unit is connected to starting load unit by the working state of control DC-DC converter, thereby adjusting the energy proportion of lead-acid battery unit and super capacitor unit to starting load unit power supply;The application is provided with a series of structures, so that the starting performance of composite starting system is higher, prolongs battery life, reduces the probability of starting failure, the system is more reliable, reduces the probability that electrical components are excessively heated and short-circuit, improves safety, reduces the operation difficulty of installation and disassembly, improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of vehicle battery technology, specifically to a composite starting system based on a supercapacitor and a lead-acid battery. Background Technology

[0002] The car starting system mainly consists of a battery, ignition switch, starter relay, and starter motor. Its working principle is to convert the electrical energy of the battery into mechanical energy through the starter motor, thereby starting the engine.

[0003] With the continuous innovation of energy storage technology, the performance limitations of traditional single energy storage element starting systems are gradually becoming apparent. In low-temperature environments, the starting performance of traditional lead-acid batteries deteriorates significantly. Lead-acid batteries avoid damage such as plate sulfation caused by frequent high-current discharge, which affects battery life. During frequent start-stop operations, existing automotive starting systems are prone to starting failures. Furthermore, existing automotive starting systems lack heat insulation structures between the battery and other electrical components, and battery heating can easily affect other electrical components, potentially causing short circuits. Batteries are mostly installed using screws and other fasteners, requiring tools for disassembly, making the operation complex and inefficient. Summary of the Invention

[0004] This invention addresses the problems of high cost, high energy consumption, and large size in existing technologies by providing a composite starting system based on supercapacitors and lead-acid batteries to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a composite starting system based on a supercapacitor and a lead-acid battery, characterized in that it includes a lead-acid battery unit, a supercapacitor unit, a DC-DC converter, an energy management control unit, and a starting load unit. The lead-acid battery unit and the supercapacitor unit are respectively connected to the DC-DC converter through corresponding current detection points I1 and I2. The output of the DC-DC converter is connected to the starting load unit through a current detection point I3. The energy management control unit adjusts the energy ratio supplied to the starting load unit by controlling the operating state of the DC-DC converter. The energy management control unit implements control according to the following steps: S1. When the ignition switch is turned on, the energy management control unit starts and immediately detects the voltage V1 of the lead-acid battery cell, the voltage V2 of the supercapacitor cell, and the ambient temperature T. At the same time, it detects whether the voltage V1 of the lead-acid battery cell is lower than the preset minimum operating voltage V1min. If V1 < V1min, a battery voltage low warning is issued. It also detects whether the voltage V2 of the supercapacitor cell is lower than the minimum preset minimum operating voltage V2min. If V2 < V2min, a supercapacitor voltage low warning is issued. S2. Determine the ambient temperature and select the start mode: The energy management control unit determines whether the ambient temperature T is lower than the preset temperature threshold T0. If T < T0, it enters the low temperature start mode; if T ≥ T0, it enters the normal start mode. S3. If entering low-temperature start-up mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 90% of the start-up current I3, and the current provided by the lead-acid battery unit is 10% of the start-up current. S4. If entering normal startup mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 70% of the startup current I3, and the current provided by the lead-acid battery unit is 30% of the startup current; S5. Monitoring parameters and dynamically adjusting: During startup, the energy management control unit monitors currents I1, I2, and I3 and voltages V1 and V2 in real time. When the startup current I3 exceeds the preset maximum current value I3max, the energy management control unit automatically adjusts the output parameters of the DC-DC converter to limit the startup current from exceeding I3max. At the same time, it monitors the temperature T1 of the lead-acid battery cell and the temperature T2 of the supercapacitor cell. When T1 or T2 exceeds their respective safe temperature thresholds, the energy management control unit automatically adjusts the energy distribution ratio to reduce the load on the components. S6. Charging after startup: After startup is completed, when the energy management control unit detects that the startup current I3 has dropped to the normal operating current range, it determines that the startup process is complete. At this time, it will control the DC-DC converter to convert the electrical energy of the lead-acid battery into the supercapacitor unit for charging.

[0006] Optimally, the control method of the low-temperature start-up mode is to control the duty cycle and switching frequency of the DC-DC converter, so as to reduce the equivalent internal resistance of the supercapacitor unit discharge circuit and increase the equivalent internal resistance of the lead-acid battery discharge circuit, thereby achieving the required current distribution ratio.

[0007] Ideally, when charging the supercapacitor unit, it is first charged with a constant current. When the supercapacitor unit voltage approaches the set value, it switches to constant voltage charging until the supercapacitor voltage reaches the preset value.

[0008] Furthermore, a composite starting system based on supercapacitors and lead-acid batteries includes a base plate. A DC-DC converter is mounted on the top of the base plate. An energy management control unit is mounted on the top of the base plate next to the DC-DC converter. A pad is mounted on the top of the base plate at the front end of the DC-DC converter. A protective enclosure is mounted on the top of the pad. A heat dissipation component is detachably mounted on the top of the protective enclosure. A copper pipe is mounted on one side of the protective enclosure near the DC-DC converter. A heat insulation plate is installed inside the protective enclosure. A supercapacitor unit is mounted on the top of the pad on one side of the heat insulation plate. A lead-acid battery unit is mounted on the top of the pad on the other side of the heat insulation plate. Corner plates are mounted on the top of the pads near the four corners of the supercapacitor unit and the four corners of the lead-acid battery unit. Each of the eight corner plates is rotatably connected to a limit plate.

[0009] Ideally, a protective cover is installed at the top edge of the base plate, and a mounting plate is provided at the bottom edge of the protective cover. The mounting plate can be fixed to the top of the base plate with screws to secure the protective cover, thereby protecting the various electrical components at the top of the base plate.

[0010] Ideally, the top of the protective cover has several holes, and one side of the protective cover has a socket area. The protective cover protects the electrical components on the top of the base plate. The socket area includes a socket that can be electrically connected to the vehicle load.

[0011] Ideally, a circulation system is provided on one side of the copper tube. The circulation system is installed on the top of the base plate. The circulation system includes a box, a liquid suction port, a liquid discharge port, a heat dissipation structure, and a pump. The box stores liquid. The liquid suction port and the liquid discharge port are connected to the two ends of the copper tube, respectively. The pump circulates the coolant in the copper tube. The liquid that has absorbed heat returns to the box, and the low-temperature liquid is delivered to the inside of the copper tube.

[0012] Ideally, positioning plates are provided on both sides of the top of the protective box, and the opposite ends of the two positioning plates extend into the interior of the protective box. Threaded holes are provided at the top of the positioning plates, and round holes are provided through the four corners of the heat dissipation component. The heat dissipation component is installed on the top of the positioning plates by screws.

[0013] Ideally, a spring button is provided on one side of the corner plate, and a bracket matching the spring button is provided on one side of the limiting plate. When the limiting plate rotates to above the corresponding corner plate, the bracket is locked by the spring button, so that the limiting plate will not rotate on its own.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This hybrid starting system based on supercapacitors and lead-acid batteries integrates a supercapacitor unit and a lead-acid battery unit, controlled by a DC-DC converter. At startup, the supercapacitor unit, with its high power density, rapidly releases a large current to meet the high power demands of the equipment, compensating for the slow current response of lead-acid batteries. This results in higher starting performance for the hybrid system. The large current during startup is primarily provided by the supercapacitor unit, while the lead-acid battery avoids damage such as plate sulfation caused by frequent high-current discharge, extending battery life. The supercapacitor and lead-acid battery work together to provide a more stable starting voltage for the equipment. Under complex operating conditions, such as frequent starts and stops of industrial equipment or vehicles traveling on rough roads, the hybrid system effectively suppresses voltage fluctuations, reducing the probability of startup failure and making the system more reliable.

[0015] 2. This composite starting system based on supercapacitors and lead-acid batteries isolates the supercapacitor unit and lead-acid battery unit from other electrical components through a protective enclosure. A copper pipe is installed on one side of the protective enclosure near the other electrical components, and coolant circulates inside the copper pipe to prevent the heat generated by the supercapacitor unit and lead-acid battery unit during operation from affecting other electrical components, reducing the probability of short circuits caused by overheating of electrical components and improving safety.

[0016] 3. This composite starting system based on supercapacitors and lead-acid batteries uses corner plates that match the supercapacitor unit and the lead-acid battery unit, and a limiting plate that is rotatably connected to the top of the corner plate. The limiting plate is self-locking, so that the supercapacitor unit and the lead-acid battery unit can be installed and disassembled without the need for tools, reducing the difficulty of installation and disassembly and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a block diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the control strategy of the energy management control unit in this invention; Figure 3 This is a schematic diagram of the overall system structure in a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the protective box structure in a specific embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of the protective box structure in a specific embodiment of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Base plate; 2. Mounting plate; 3. Hole; 4. Protective cover; 5. Socket area; 6. Protective enclosure; 7. Energy management control unit; 8. DC-DC converter; 9. Circulation system; 10. Supercapacitor unit; 11. Lead-acid battery unit; 12. Copper pipe; 13. Heat dissipation assembly; 14. Pad; 15. Heat insulation plate; 16. Positioning plate; 17. Spring button; 18. Limiting plate; 19. Bracket; 20. Angle plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 As shown, the present invention discloses a hybrid starting system based on a supercapacitor and a lead-acid battery, comprising a lead-acid battery unit, a supercapacitor unit, a DC-DC converter, an energy management control unit, and a starting load unit. The lead-acid battery unit and the supercapacitor unit are respectively connected to the DC-DC converter via corresponding current detection points I1 and I2. The output of the DC-DC converter is connected to the starting load unit via a current detection point I3. The energy management control unit adjusts the energy ratio supplied to the starting load unit by controlling the operating state of the DC-DC converter. The energy management control unit implements control according to the following steps: S1. When the ignition switch is turned on, the energy management control unit starts and immediately detects the voltage V1 of the lead-acid battery cell, the voltage V2 of the supercapacitor cell, and the ambient temperature T. At the same time, it detects whether the voltage V1 of the lead-acid battery cell is lower than the preset minimum operating voltage V1min (usually 10.5V). If V1 < V1min, a low battery voltage warning is issued. It also detects whether the voltage V2 of the supercapacitor cell is lower than the minimum preset minimum operating voltage V2min (usually 8V). If V2 < V2min, a low supercapacitor voltage warning is issued. S2. Determine the ambient temperature and select the start mode: The energy management control unit determines whether the ambient temperature T is lower than the preset temperature threshold T0 (usually -10℃). If T < T0, it enters the low temperature start mode; if T ≥ T0, it enters the normal start mode. S3. If entering the low-temperature start-up mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 90% of the start-up current I3, and the current provided by the lead-acid battery unit is 10% of the start-up current. The control method of the low-temperature start-up mode is to control the duty cycle and switching frequency of the DC-DC converter to reduce the equivalent internal resistance of the supercapacitor unit discharge circuit and increase the equivalent internal resistance of the lead-acid battery discharge circuit, thereby achieving the required current distribution ratio.

[0021] S4. If entering normal startup mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 70% of the startup current I3, and the current provided by the lead-acid battery unit is 30% of the startup current; S5. Monitoring parameters and dynamically adjusting: During startup, the energy management control unit monitors currents I1, I2, and I3 and voltages V1 and V2 in real time. When the startup current I3 exceeds the preset maximum current value I3max (800A), the energy management control unit automatically adjusts the output parameters of the DC-DC converter to limit the startup current from exceeding I3max. At the same time, it monitors the temperature T1 of the lead-acid battery cell and the temperature T2 of the supercapacitor cell. When T1 or T2 exceeds their respective safe temperature thresholds, the energy management control unit automatically adjusts the energy distribution ratio to reduce the load on the components. S6. Post-start charging: After startup, when the energy management control unit detects that the startup current I3 has decreased to the normal operating current range (usually less than 50A), it determines that the startup process is complete. At this time, it will control the DC-DC converter to convert the electrical energy of the lead-acid battery into charging power for the supercapacitor unit. When charging the supercapacitor unit, it is first charged with a constant current (not exceeding 10A). When the supercapacitor unit voltage approaches the set value, it switches to constant voltage charging until the supercapacitor voltage reaches the preset value (16V).

[0022] Based on the above system structure, this embodiment provides a specific overall system structure for illustration. (See [link to documentation]). Figures 3-6This embodiment of the composite starting system based on supercapacitors and lead-acid batteries includes a base plate 1. A DC-DC converter 8 is mounted on the top of the base plate 1. The DC-DC converter 8 is a bidirectional DC-DC converter, supporting energy flow from the input to the output or vice versa. An energy management control unit 7 is mounted on the top of the base plate 1 on one side of the DC-DC converter 8. A pad 14 is mounted on the top of the base plate 1 at the front end of the DC-DC converter 8. The pad 14 is made of carbon fiber reinforced plastic, which has high bending strength and is not easily deformed. A protective housing 6 is mounted on the top of the pad 14. The inner walls of the protective housing 6 are lined with ceramic fiber, which has good heat insulation properties. To block the heat generated by the lead-acid battery unit 11 and the supercapacitor unit 10 during operation, a heat dissipation component 13 is detachably installed on the top of the protective enclosure 6. The heat dissipation component 13 contains several fins, providing good heat dissipation and dissipating the heat generated by the lead-acid battery unit 11 and the supercapacitor unit 10 during operation. A copper pipe 12 is installed on one side of the protective enclosure 6 near the DC-DC converter 8. Coolant circulates inside the copper pipe 12, which can reduce the heat dissipated at the wiring positions of the protective enclosure 6 and prevent the heat from affecting other electrical components. A heat insulation plate 15 is installed inside the protective enclosure 6, and ceramic fibers are installed on both sides of the heat insulation plate 15. This avoids mutual interference between the lead-acid battery unit 11 and the supercapacitor unit 10 during operation, reducing the probability of thermal runaway. The supercapacitor unit 10 is installed at the top of one side of the heat insulation plate 15's pad 14, and the lead-acid battery unit 11 is installed at the top of the other side of the heat insulation plate 15's pad 14. The supercapacitor unit 10 and the lead-acid battery unit 11 are electrically connected to the DC-DC converter 8, which controls the charging and discharging of both. Corner plates 20 are provided at the top of the pad 14 near the four corners of the supercapacitor unit 10 and the four corners of the lead-acid battery unit 11. Four corner plates 20 form a group. Matching the four corners of the bottom of the supercapacitor unit 10, another type of corner plate 20 matches the four corners of the bottom of the lead-acid battery unit 11. The top of each of the eight corner plates 20 is rotatably connected to a limiting plate 18. When the lead-acid battery unit 11 and the supercapacitor unit 10 are placed inside the two sets of corner plates 20 respectively, the bottom of the lead-acid battery unit 11 and the supercapacitor unit 10 are locked by the two sets of corner plates 20. Then, the limiting plate 18 is rotated to rotate above the corner plate 20. At this time, the four corners of the bottom of the lead-acid battery unit 11 and the supercapacitor unit 10 are limited, so that the lead-acid battery unit 11 and the supercapacitor unit 10 are fixed to the top of the pad 14.

[0023] Specifically, a protective cover 4 is installed at the top edge of the base plate 1, and a mounting plate 2 is provided at the bottom edge of the protective cover 4. The mounting plate 2 can be fixed to the top of the base plate 1 with screws to fix the protective cover 4 in place, so that the protective cover 4 protects the various electrical components at the top of the base plate 1.

[0024] Furthermore, the top of the protective cover 4 is provided with several holes 3, and a socket area 5 is provided on one side of the protective cover 4. The protective cover 4 protects the various electrical components on the top of the base plate 1. The socket area 5 includes a socket that can be electrically connected to the vehicle load.

[0025] Furthermore, a circulation system 9 is provided on one side of the copper pipe 12. The circulation system 9 is installed on the top of the base plate 1. The circulation system 9 includes a box, a liquid suction port, a liquid discharge port, a heat dissipation structure and a pump body. The box stores liquid. The liquid suction port and the liquid discharge port are connected to the two ends of the copper pipe 12 respectively. The pump body circulates the coolant in the copper pipe 12. The liquid that has absorbed heat returns to the box, and the low-temperature liquid is delivered to the inside of the copper pipe 12.

[0026] Furthermore, positioning plates 16 are provided on both sides of the top of the protective housing 6. The opposite ends of the two positioning plates 16 extend into the interior of the protective housing 6. Threaded holes are provided at the top of the positioning plates 16. Circular holes are provided through the four corners of the heat dissipation assembly 13. The heat dissipation assembly 13 is installed on the top of the positioning plates 16 by screws.

[0027] Furthermore, a spring button 17 is provided on one side of the corner plate 20, and a bracket 19 matching the spring button 17 is provided on one side of the limiting plate 18. When the limiting plate 18 rotates to the upper part of the corresponding corner plate 20, the bracket 19 is locked by the spring button, so that the limiting plate 18 will not rotate on its own.

[0028] The usage method of this embodiment is as follows: When the composite starting system is in use, at the moment of startup, the supercapacitor unit 10, with its high power density characteristics, rapidly releases a large current to meet the high power demand during equipment startup, compensating for the slow startup current response of the lead-acid battery unit 11. After startup, the system enters the normal operation phase, where the lead-acid battery unit 11 continuously supplies power to the equipment and simultaneously uses the excess energy generated during equipment operation to charge the supercapacitor unit 10. In energy recovery scenarios such as vehicle braking, the supercapacitor unit 10 quickly absorbs and stores the electrical energy generated during braking, which will be used again during the next startup, forming an efficient energy recycling mode. The supercapacitor unit 10 and the lead-acid battery unit 11 are controlled by the DC-DC converter 8 for charging and discharging operations. During operation, the supercapacitor unit 10 and the lead-acid battery unit 11 generate heat when charging. This heat is blocked by the protective enclosure 6, preventing it from being conducted to other electrical components. Simultaneously, during startup and normal system operation, the supercapacitor unit 10 charges, and the heat generated by it is blocked by the heat insulation plate 15, effectively preventing heat exchange between the supercapacitor unit 10 and the lead-acid battery unit 11 and reducing the probability of thermal runaway, thus enhancing safety. Furthermore, coolant circulates inside the copper pipe 12 on one side of the protective enclosure 6, reducing heat dissipation at the wiring locations and preventing heat from affecting other electrical components.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Although the applicant has described the present invention in detail with reference to preferred embodiments, those skilled in the art should understand that any modifications or equivalent substitutions made to the technical solutions of the present invention cannot depart from the spirit and scope of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A hybrid starting system based on supercapacitor and lead acid battery characterized in that: The system includes a lead-acid battery unit, a supercapacitor unit, a DC-DC converter, an energy management control unit, and a starting load unit. The lead-acid battery unit and the supercapacitor unit are connected to the DC-DC converter through corresponding current detection points I1 and I2, respectively. The output of the DC-DC converter is connected to the starting load unit through a current detection point I3. The energy management control unit adjusts the energy ratio supplied to the starting load unit by controlling the operating state of the DC-DC converter. The energy management control unit implements control according to the following steps: S1. When the ignition switch is turned on, the energy management control unit starts and immediately detects the voltage V1 of the lead-acid battery cell, the voltage V2 of the supercapacitor cell, and the ambient temperature T. At the same time, it detects whether the voltage V1 of the lead-acid battery cell is lower than the preset minimum operating voltage V1min. If V1 < V1min, a battery voltage low warning is issued. It also detects whether the voltage V2 of the supercapacitor cell is lower than the minimum preset minimum operating voltage V2min. If V2 < V2min, a supercapacitor voltage low warning is issued. S2. Determine the ambient temperature and select the start mode: The energy management control unit determines whether the ambient temperature T is lower than the preset temperature threshold T0. If T < T0, it enters the low temperature start mode; if T ≥ T0, it enters the normal start mode. S3. If entering low-temperature start-up mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 90% of the start-up current I3, and the current provided by the lead-acid battery unit is 10% of the start-up current. S4. If entering normal startup mode: The energy management control unit adjusts the operating parameters of the DC-DC converter so that the current provided by the supercapacitor unit is 70% of the startup current I3, and the current provided by the lead-acid battery unit is 30% of the startup current; S5. Monitoring parameters and dynamically adjusting: During startup, the energy management control unit monitors currents I1, I2, and I3 and voltages V1 and V2 in real time. When the startup current I3 exceeds the preset maximum current value I3max, the energy management control unit automatically adjusts the output parameters of the DC-DC converter to limit the startup current from exceeding I3max. At the same time, it monitors the temperature T1 of the lead-acid battery cell and the temperature T2 of the supercapacitor cell. When T1 or T2 exceeds their respective safe temperature thresholds, the energy management control unit automatically adjusts the energy distribution ratio to reduce the load on the components. S6. Charging after startup: After startup is completed, when the energy management control unit detects that the startup current I3 has dropped to the normal operating current range, it determines that the startup process is complete. At this time, it will control the DC-DC converter to convert the electrical energy of the lead-acid battery into the supercapacitor unit for charging.

2. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: The control method of the low-temperature start-up mode is to control the duty cycle and switching frequency of the DC-DC converter, so as to reduce the equivalent internal resistance of the supercapacitor unit discharge circuit and increase the equivalent internal resistance of the lead-acid battery discharge circuit, thereby achieving the required current distribution ratio.

3. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: When charging the supercapacitor unit, it is first charged with a constant current. When the supercapacitor unit voltage approaches the set value, it switches to constant voltage charging until the supercapacitor voltage reaches the preset value.

4. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, 2, or 3, wherein: The system includes a base plate (1), a DC-DC converter (8) is mounted on the top of the base plate (1), an energy management control unit (7) is mounted on the top of the base plate (1) on one side of the DC-DC converter (8), a pad (14) is mounted on the top of the front base plate (1) of the DC-DC converter (8), a protective enclosure (6) is mounted on the top of the pad (14), a heat dissipation component (13) is detachably mounted on the top of the protective enclosure (6), and a part of the protective enclosure (6) is located near the DC-DC converter (8). A copper pipe (12) is provided at the location. A heat insulation plate (15) is provided inside the protective box (6). A supercapacitor unit (10) is installed on the top of a pad (14) on one side of the heat insulation plate (15). A lead-acid battery unit (11) is installed on the top of a pad (14) on the other side of the heat insulation plate (15). Corner plates (20) are provided at the top of the pad (14) near the four corners of the supercapacitor unit (10) and the four corners of the lead-acid battery unit (11). The tops of the eight corner plates (20) are rotatably connected to limit plates (18).

5. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: A protective cover (4) is installed at the top edge of the base plate (1), and an installation plate (2) is provided at the bottom edge of the protective cover (4).

6. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: The top of the protective cover (4) has several holes (3), and a socket area (5) is provided on one side of the protective cover (4).

7. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: A circulation system (9) is provided on one side of the copper tube (12), and the circulation system (9) is installed on the top of the base plate (1).

8. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: Positioning plates (16) are provided on both sides of the top of the protective box (6), and the opposite ends of the two positioning plates (16) extend into the interior of the protective box (6).

9. The ultracapacitor and lead-acid battery-based hybrid starting system of claim 1, wherein: A spring button (17) is provided on one side of the corner plate (20), and a bracket (19) matching the spring button (17) is provided on one side of the limiting plate (18).

Images