A mobile power source for vehicles

Abstract

The utility model discloses a kind of mobile power supply for vehicle belongs to the technical field of automobile parts. The mobile power supply for vehicle uses double electric layer super capacitor as energy storage main body, and is connected in series by two capacitor groups, significantly improves output voltage grade, makes full use of double electric layer super capacitor wide temperature domain work and no thermal runaway, no spontaneous combustion risk Safety characteristics, fundamentally solve the problem that traditional lithium battery mobile power supply is easily caused fire in high-temperature vehicle-mounted environment. At the same time, the overall structure adopts modularization and side layout, cooperates with metal connecting sheet to realize low impedance series connection, ensures that power is large and efficiency is high when large current discharges, and is especially suitable for high-power scenarios such as automobile emergency start. By setting type-C charging and discharging interface and high-power output terminal, both the power supply main body power supply and low-power discharge demand are realized, and high-power output demand under special scene is also met, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a mobile power supply for vehicles. Background Technology

[0002] With the widespread use of portable electronic devices, power banks have become an essential accessory for daily travel. Currently, the vast majority of power banks on the market use lithium-ion or lithium polymer batteries as their energy storage units. While these batteries offer advantages such as high energy density and small size, they also pose significant safety hazards in certain usage scenarios. Especially when power banks are left inside a car for extended periods, in high summer temperatures where the interior can reach as high as 65°C, lithium batteries are prone to thermal runaway due to heat accumulation, leading to bulging, fire, or even explosion, seriously threatening personal and vehicle safety.

[0003] On the other hand, during actual driving, the vehicle may automatically cut off the main power system due to a dead battery, circuit failure, or collision. At this time, without a reliable backup power source, the user will find it difficult to start emergency equipment and is very likely to be left in a helpless situation.

[0004] Furthermore, field workers, rescue personnel, and professionals in specialized industries often require instantaneous high-power output in emergency situations for tasks such as engine starting, small-scale welding, powering high-energy laser devices, electromagnetic pulse emission, or impact blasting control. However, traditional lithium batteries, limited by discharge rate and safety mechanisms, typically only support continuous output of tens of amperes, making it difficult to meet such high-power demands. Utility Model Content

[0005] This utility model addresses the aforementioned problems in the prior art by providing a portable power supply for vehicles.

[0006] The vehicle-mounted power supply provided by this utility model includes a housing and a double-layer supercapacitor power supply body disposed within the housing; The main body of the double-layer supercapacitor power supply includes a first double-layer capacitor group and a second double-layer capacitor group arranged in opposite directions. Both the first double-layer capacitor group and the second double-layer capacitor group are composed of N double-layer capacitor cells connected in series. The positive terminal of the first electric double-layer capacitor group and the negative terminal of the second electric double-layer capacitor group are electrically connected through a conductive connecting piece; the negative terminal of the first electric double-layer capacitor group is provided with a negative terminal, and the positive terminal of the second electric double-layer capacitor group is provided with a positive terminal; The outer casing includes a shell body, a first end cap, and a second end cap. The shell body is a hollow cavity extending along the length of the main body of the double-layer supercapacitor power supply. The first end cap is sealed and fixed to one end of the shell body, correspondingly covering the negative terminal of the first double-layer capacitor group and the positive terminal of the second double-layer capacitor group. The second end cap is sealed and fixed to the other end of the shell body. The first end cap is provided with a positive maximum power output terminal and a negative maximum power output terminal. The positive maximum power output terminal is electrically connected to the positive terminal through an interference fit, and the negative maximum power output terminal is electrically connected to the negative terminal through an interference fit. The positive and negative maximum power output terminals are used to provide high power output. The casing has a Type-C interface for bidirectional charging and powering low-power devices.

[0007] In the vehicle-mounted power supply of this invention, the diameters of the positive maximum power output terminal and the negative maximum power output terminal are 12 mm to 20 mm.

[0008] In the vehicle-mounted power bank of this utility model, the outer edge of the first end cover is provided with an annular flange, and the inner side of the annular flange is provided with an interface slot for snapping on an external adapter.

[0009] In the vehicle-mounted power bank of this utility model, the positive terminal and the negative terminal are in the shape of bosses; the positive maximum power output terminal and the negative maximum power output terminal are respectively provided with grooves matching the bosses on the side facing the positive terminal and the negative terminal.

[0010] In the vehicle-mounted power bank of this utility model, the first end cap, the second end cap, and the housing are detachably connected.

[0011] In the vehicle-mounted power bank of this utility model, the inside of the shell is provided with a support plate that can be pulled out along the axis, and a power control board is fixedly installed on the support plate; the support plate and the inner wall of the shell form an independent slot for accommodating and limiting the power control board. A display panel is provided on the outer side of the housing; The power control board is electrically connected to the main body of the double-layer supercapacitor power supply and is used to monitor the voltage, temperature and remaining energy status of the main body of the double-layer supercapacitor power supply in real time, and transmit the status information to the display panel for visual display.

[0012] In the vehicle-mounted power bank of this invention, a heat-dissipating silicone sheet is provided between the power control board and the inner wall of the housing.

[0013] In the vehicle-mounted power supply of this utility model, an alarm light and a flashlight are also provided on the outer surface of the shell. The alarm light and the flashlight are both electrically connected to the double-layer supercapacitor power supply body through the power control board.

[0014] This invention offers the following advantages: The vehicle-mounted power bank utilizes a double-layer supercapacitor as its energy storage unit. By connecting two capacitor banks in series, the output voltage level is significantly improved. It fully leverages the wide temperature range operation and safety characteristics of double-layer supercapacitors, including no thermal runaway and no risk of spontaneous combustion, fundamentally solving the problem of traditional lithium-ion battery power banks easily causing fires in high-temperature vehicle environments. Simultaneously, the overall structure adopts a modular side-by-side layout, coupled with metal connecting pieces to achieve low-impedance series connection, ensuring high power and efficiency during high-current discharge, making it particularly suitable for high-power scenarios such as emergency car start-ups. By incorporating a Type-C charging / discharging interface and a high-power output terminal, it fulfills both the needs for replenishing the main power supply and low-power discharge, as well as the high-power output requirements in special scenarios, demonstrating strong practicality. Attached Figure Description

[0015] Figures 1-2 A perspective view of a vehicle-mounted power bank provided for an embodiment of this utility model.

[0016] Figure 3 A top view of a vehicle-mounted power bank provided in an embodiment of this utility model.

[0017] Figure 4 A bottom view of a vehicle-mounted power bank provided in an embodiment of this utility model.

[0018] Figures 5-6 A side view of a vehicle-mounted power bank provided for an embodiment of this utility model.

[0019] Figure 7 A top view of the first end cap of the vehicle-mounted power supply provided in an embodiment of this utility model.

[0020] Figure 8 A top view of the second end cap of the vehicle-mounted power supply provided in an embodiment of this utility model.

[0021] Figures 9-10 A partial view of the first end cap of the vehicle-mounted power supply provided in an embodiment of this utility model.

[0022] Figures 11-12 A perspective view of the main body of the vehicle-mounted power supply provided in an embodiment of this utility model.

[0023] Figure 13 A cross-sectional view of the power supply body and the first end cover of the vehicle-mounted power supply provided in this embodiment of the utility model.

[0024] Figure 14 A schematic diagram of an independent slot for a vehicle-mounted power bank provided in an embodiment of this utility model.

[0025] Figure 15 A schematic diagram of a high-power accessory provided for an embodiment of this utility model.

[0026] In the attached diagram: 10. Outer casing; 11. Body casing; 111. Display panel; 112. Type-C interface; 113. Alarm light; 114. Flashlight; 12. First end cap; 121. Positive maximum power output terminal; 122. Negative maximum power output terminal; 123. Annular flange; 124. Interface slot; 13. Second end cap; 20. Double-layer supercapacitor power supply body; 21. First double-layer capacitor bank; 22. Second double-layer capacitor bank; 23. Double-layer capacitor cell; 231. Positive terminal; 232. Negative terminal; 24. Conductive connecting piece; 30. Support plate; 40. Power control board; 50. Thermal pads; 60. Accessory end cap; 61. Buckle. Detailed Implementation

[0027] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] like Figure 1-14 As shown, this utility model embodiment provides a vehicle-mounted power supply, including a housing 10 and a double-layer supercapacitor power supply body 20 disposed within the housing 10.

[0029] The double-layer supercapacitor power supply body 20 includes a first double-layer capacitor group 21 and a second double-layer capacitor group 22 arranged in opposite directions. Both the first double-layer capacitor group 21 and the second double-layer capacitor group 22 are composed of N double-layer capacitor cells 23 connected in series.

[0030] The positive terminal of the first double-layer capacitor group 21 and the negative terminal of the second double-layer capacitor group 22 are electrically connected through a conductive connecting piece 24, so that the first double-layer capacitor group 21 and the second double-layer capacitor group 22 are connected in series to form an energy storage unit with a total output voltage twice that of a single group; the negative terminal of the first double-layer capacitor group 21 is provided with a negative terminal 232, and the positive terminal of the second double-layer capacitor group 22 is provided with a positive terminal 231.

[0031] Electric double-layer supercapacitors, as a novel type of electrochemical energy storage device, possess an ultra-wide operating temperature range (typically -40℃ to +65℃), extremely high power density (10kW / kg), extremely long cycle life (over 500,000 cycles), and intrinsic safety. Their energy storage principle is based on physical adsorption rather than chemical reaction, and even under short-circuit, overvoltage, or high-temperature conditions, there is virtually no risk of combustion or explosion, making them particularly suitable for long-term placement on car dashboards or in the trunk as backup energy.

[0032] like Figure 11 , Figure 12 As shown, both the first double-layer capacitor group 21 and the second double-layer capacitor group 22 are composed of three double-layer capacitor cells 23 connected in series. The positive terminal of the double-layer capacitor cell 23 in the first double-layer capacitor group 21 faces the lower left corner, and the positive terminal of the double-layer capacitor cell 23 in the second double-layer capacitor group 22 faces the upper right corner. Therefore, by electrically connecting the positive terminal of the first double-layer capacitor group 21 to the negative terminal of the second double-layer capacitor group 22 through the conductive connecting piece 24, six double-layer capacitor cells 23 can be connected in series. It is understandable that... Figure 11 , Figure 12 The number of double-layer capacitor cells 23 shown is for illustrative purposes only. In actual applications, the number of double-layer capacitor cells 23 is determined based on their capacitance and the total capacity required by the power bank. In some embodiments of this invention, the double-layer capacitor cells are connected in series to form a 12-18V capacitor bank. An aluminum shell is used to make the outer casing of the capacitor bank to fix and protect it. The aluminum alloy shell is tightly attached to the outer wall of the capacitor bank to achieve efficient heat dissipation.

[0033] The outer casing 10 includes a casing body 11, a first end cap 12, and a second end cap 13. The casing body 11 is a hollow cavity extending along the length of the double-layer supercapacitor power supply body 20. The first end cap 12 is sealed and fixed to one end of the casing body 11, correspondingly covering the negative terminal of the first double-layer capacitor group 21 and the positive terminal of the second double-layer capacitor group 22. The second end cap 13 is sealed and fixed to the other end of the casing body 11.

[0034] The first end cap 12 is provided with a positive maximum power output terminal 121 and a negative maximum power output terminal 122. The positive maximum power output terminal 121 and the positive terminal 231 are connected to each other via an interference fit to achieve a low-impedance electrical connection. The negative maximum power output terminal 122 and the negative terminal 232 are connected to each other via an interference fit to achieve a low-impedance electrical connection. The positive and negative maximum power output terminals 121 and 122 are used to provide high-power output. In this embodiment of the invention, the diameters of the positive and negative maximum power output terminals 121 and 122 are 12 mm to 20 mm. Limiting the diameters of the positive and negative maximum power output terminals to 12 mm to 20 mm ensures sufficient current-carrying cross-sectional area to support instantaneous current output in the thousands of amperes, while avoiding structural bulkiness or installation inconvenience due to excessively large terminals. This size range has been engineered to achieve the best balance between contact resistance, mechanical strength, and space occupation, ensuring that the terminals do not overheat or deform during high-power discharge, thus improving safety and lifespan.

[0035] For field workers, rescue personnel, or professionals in specialized industries, there is often a need for instantaneous high-power output in emergency situations, such as engine starting, small-scale welding, powering high-energy laser devices, electromagnetic pulse emission, electromagnetic catapults, or impact blasting control. However, traditional lithium batteries, limited by discharge rate and safety mechanisms, typically only support continuous output of tens of amperes, making it difficult to meet such high-power demands. Therefore, the vehicle-mounted power supply of this invention selects a double-layer supercapacitor as the main power source and specifically provides a high-power output terminal for the aforementioned high-power requirements, capable of providing instantaneous currents of thousands of amperes.

[0036] like Figure 2 , Figure 9 , Figure 10 As shown, the outer edge of the first end cap 12 is provided with an annular flange 123, and the inner side of the annular flange 123 is provided with an interface slot 124 for engaging an external adapter. Figure 15 The diagram shows a high-power accessory, which includes an end cap 60 and a snap fastener 61. The end cap 60 matches the shape of the first end cap 12 and has positive and negative high-power input terminals corresponding to the positions and dimensions of the positive high-power output terminal 121 and the negative high-power output terminal 122. After the end cap 60 and the first end cap 12 are engaged, the snap fastener 61 and the interface slot 124 engage to ensure tight contact between the terminals. Two wires are provided on the other side of the end cap 60. One end of each wire is connected to the positive and negative high-power input terminals, respectively, and the other end is connected to the positive and negative terminals of the high-power electrical equipment, forming a current transmission path. Figure 9 , Figure 10As shown, the annular flange 123 has two interface slots 124 on one side and one interface slot 124 on the other side, and the accessory end cap 60 has three corresponding latches 61. It should be understood that the positions and numbers of the interface slots 124 and latches 61 in the attached drawings are for illustrative purposes only; in actual applications, they can be configured as needed. Figure 15 As shown in the accessory end cap, this vehicle-mounted power bank can provide high-power output for applications such as engine starting, resistance welding, air pumps, oil pumps, calipers, demolition hammers, lasers, and high-power electromagnetic pulses (electromagnetic interference, signal transmission). This vehicle-mounted power bank can provide instantaneous high-power output of up to 1000 amps or more. After the battery is depleted, it can be connected to a 12V car battery system for charging and then kept in the vehicle for standby. Furthermore, in outdoor use scenarios, this vehicle-mounted power bank can also be recharged via its integrated Type-C interface using external power sources such as portable power banks and solar charging devices to meet subsequent high-power output demands.

[0037] like Figures 1-3 As shown in this embodiment of the invention, the housing 11 is equipped with a Type-C interface 112 for bidirectional charging and powering low-power devices. The integrated Type-C charging and discharging interface enables this power bank to not only support high-power emergency output but also meet the daily charging needs of mainstream electronic devices. This interface supports bidirectional power transmission, allowing it to charge the supercapacitor via a car charger or adapter, or be used as a regular power bank, expanding the product's functional boundaries and enhancing its daily practicality and user convenience. In practical applications, a USB interface can also be provided as needed to power devices such as mobile phones and tablets.

[0038] This utility model of a vehicle-mounted power bank uses a double-layer supercapacitor as the energy storage unit. By connecting two capacitor banks in series, the output voltage level is significantly improved. It fully utilizes the wide temperature range operation and safety characteristics of double-layer supercapacitors, including no thermal runaway and no risk of spontaneous combustion, fundamentally solving the problem of traditional lithium battery power banks easily causing fires in high-temperature vehicle environments. Simultaneously, the overall structure adopts a modular side-by-side layout, with metal connecting pieces to achieve low-impedance series connection, ensuring high power and efficiency during high-current discharge, making it particularly suitable for high-power scenarios such as emergency car starting. By setting up a Type-C charging and discharging interface and a high-power output terminal, it not only meets the needs of replenishing the main power supply and low-power discharge, but also satisfies the high-power output requirements in special scenarios, making it highly practical.

[0039] like Figure 13As shown in the embodiment of this utility model, the positive terminal 231 and the negative terminal 232 are in the shape of bosses; the positive maximum power output terminal 121 and the negative maximum power output terminal 122 are respectively provided with grooves matching the bosses on the side facing the positive terminal 231 and the negative terminal 232, so as to achieve axial positioning and maximize the contact area.

[0040] By designing the internal terminals as bosses and providing matching grooves at corresponding positions on the external high-power output terminals, precise axial positioning and surface-contact electrical connection are achieved. This structure not only enhances the stability of the interference fit and prevents loosening due to vibration, but also significantly increases the conductive contact area, substantially reduces contact resistance, and effectively suppresses local temperature rise during high-current discharge, thereby ensuring the reliability and safety of high-power output.

[0041] In this embodiment of the utility model, the first end cap 12, the second end cap 13 and the shell 11 are detachably connected by at least one of the following methods: threads, snaps or screws. Figures 7-8 In the middle, the edges of the first end cap 12 and the second end cap 13 are provided with threaded holes for fixed connection with the shell body.

[0042] The first and second end caps are detachably connected to the housing, allowing users or maintenance personnel to quickly open the housing to replace the internal capacitor bank or repair the circuit when the capacitors are aging, damaged, or require upgrades. This significantly improves the product's maintainability and lifecycle value. Simultaneously, this design does not compromise overall sealing, effectively preventing dust and water damage under normal closed conditions, meeting the reliability requirements of automotive environments.

[0043] like Figure 14 As shown in the embodiment of this utility model, the shell 11 is provided with a support plate 30 that can be pulled out along the axial direction, and a power control board 40 is fixedly installed on the support plate 30; the support plate 30 and the inner wall of the shell 11 form an independent slot for accommodating and limiting the power control board 40. The outer side of the housing 11 is provided with a display panel 111; The power control board 40 is electrically connected to the double-layer supercapacitor power supply body 20, and is used to monitor the voltage, temperature and remaining energy status of the double-layer supercapacitor power supply body 20 in real time, and transmit the status information to the display panel 111 for visual display.

[0044] A retractable support plate is installed inside the housing, and the power control board is fixed on it to form an independent slot structure. This achieves physical isolation between the control circuit and the high-voltage energy storage unit, improving electrical safety, and also facilitates assembly and subsequent maintenance. Combined with the display panel on the outside of the housing, users can view key status information such as voltage, power, and temperature in real time, enhancing the human-machine interface and transparency. Especially in emergencies, it allows for quick assessment of power availability, improving emergency response efficiency.

[0045] like Figure 14 As shown in the embodiment of this utility model, a heat dissipation silicone pad 50 is provided between the power control board 40 and the inner wall of the housing 11 to dissipate the heat generated by the control board during operation and improve the thermal stability of the system.

[0046] A heat-dissipating silicone pad is added between the power control board and the inner wall of the housing. This efficiently dissipates the heat generated by the control chip and power devices during operation, and diffuses it outward through the metal housing, effectively suppressing the temperature rise of the control board and preventing component failure or performance drift due to high temperatures. This measure significantly improves the long-term operational stability of the system under high load or high temperature environments, and is especially suitable for high-temperature conditions inside vehicles during summer.

[0047] like Figures 1-3 As shown in the embodiment of this utility model, an alarm light 113 and a flashlight 114 are also provided on the outer surface of the shell 11. The alarm light 113 and the flashlight 114 are both electrically connected to the double-layer supercapacitor power supply body 20 through the power control board 40.

[0048] The system integrates alarm warning lights and emergency flashlights on its outer casing, directly powered by a supercapacitor. This ensures that users receive reliable audible and visual distress signals and localized lighting support in extreme situations such as vehicle power outages, nighttime breakdowns, or wilderness emergencies. Thanks to the ultra-long standby life and instantaneous discharge capability of the double-layer supercapacitor, it can be activated immediately in critical moments, even after prolonged periods of inactivity, significantly improving driving safety and emergency survival capabilities. It is particularly suitable for rescue, exploration, or special operational scenarios. For example, in the event of a traffic accident, the alarm lights can be activated in conjunction with a tripod.

[0049] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many modifications under the guidance of the present invention without departing from the spirit and scope of the claims. All of these modifications are within the protection scope of the present invention.

Claims

1. A portable power bank for vehicles, characterized in that, It includes a housing (10) and a double-layer supercapacitor power supply body (20) disposed within the housing (10). The double-layer supercapacitor power supply body (20) includes a first double-layer capacitor group (21) and a second double-layer capacitor group (22) arranged in opposite directions. Both the first double-layer capacitor group (21) and the second double-layer capacitor group (22) are composed of N double-layer capacitor cells (23) connected in series. The positive terminal of the first double-layer capacitor group (21) and the negative terminal of the second double-layer capacitor group (22) are electrically connected through a conductive connecting piece (24); the negative terminal of the first double-layer capacitor group (21) is provided with a negative terminal (232), and the positive terminal of the second double-layer capacitor group (22) is provided with a positive terminal (231). The outer casing (10) includes a shell body (11), a first end cap (12), and a second end cap (13). The shell body (11) is a hollow cavity extending along the length of the double-layer supercapacitor power supply body (20). The first end cap (12) is sealed and fixed to one end of the shell body (11), correspondingly covering the negative terminal of the first double-layer capacitor group (21) and the positive terminal of the second double-layer capacitor group (22). The second end cap (13) is sealed and fixed to the other end of the shell body (11). The first end cap (12) is provided with a positive maximum power output terminal (121) and a negative maximum power output terminal (122). The positive maximum power output terminal (121) is electrically connected to the positive terminal (231) through an interference fit, and the negative maximum power output terminal (122) is electrically connected to the negative terminal (232) through an interference fit. The positive maximum power output terminal (121) and the negative maximum power output terminal (122) are used to provide high power output. The housing (11) is provided with a Type-C interface (112) for bidirectional charging and power supply of low-power devices.

2. The vehicle-mounted power bank according to claim 1, characterized in that, The diameters of the positive maximum power output terminal (121) and the negative maximum power output terminal (122) are 12 mm to 20 mm.

3. The vehicle-mounted power bank according to claim 1, characterized in that, The outer edge of the first end cap (12) is provided with an annular flange (123), and the inner side of the annular flange (123) is provided with an interface slot (124) for snapping on an external adapter.

4. The vehicle-mounted power bank according to claim 1, characterized in that, The positive terminal (231) and the negative terminal (232) are in the shape of bosses; the positive maximum power output terminal (121) and the negative maximum power output terminal (122) are respectively provided with grooves matching the bosses on the side facing the positive terminal (231) and the negative terminal (232).

5. The vehicle-mounted power bank according to claim 1, characterized in that, The first end cap (12) and the second end cap (13) are detachably connected to the shell (11).

6. The vehicle-mounted power bank according to claim 1, characterized in that, The shell (11) is provided with a support plate (30) that can be pulled out along the axis. A power control board (40) is fixedly installed on the support plate (30). The support plate (30) and the inner wall of the shell (11) form an independent slot for accommodating and limiting the power control board (40). The outer side of the housing (11) is provided with a display panel (111). The power control board (40) is electrically connected to the double-layer supercapacitor power supply body (20) and is used to monitor the voltage, temperature and remaining energy status of the double-layer supercapacitor power supply body (20) in real time, and transmit the status information to the display panel (111) for visual display.

7. The vehicle-mounted power bank according to claim 6, characterized in that, A heat dissipation silicone pad (50) is provided between the power control board (40) and the inner wall of the housing (11).

8. The vehicle-mounted power bank according to claim 1, characterized in that, The outer surface of the shell (11) is also provided with an alarm light (113) and a flashlight (114), and the alarm light (113) and the flashlight (114) are electrically connected to the double-layer supercapacitor power supply body (20) through the power control board (40).

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