汽车应急启动电源装置
By combining a bidirectional buck-boost charging circuit and a switching unit, the high cost and large size issues caused by the independent setting of charging and discharging circuits in existing automotive emergency jump starters are solved, achieving higher circuit efficiency and smaller product size, thus improving portability and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI POWER STATION
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
The separate charging and discharging circuits of existing automotive emergency jump starters result in high costs, low circuit efficiency, and large product size, making further miniaturization impossible.
The bidirectional buck-boost charging circuit and the switching unit are used to realize the reuse and switching of the charging and discharging circuit. The internal charging and discharging circuit is reused and switched by the bidirectional buck-boost charging circuit and the switching unit, which reduces the number of components and improves circuit efficiency and product integration.
It improves charging energy conversion efficiency, reduces product costs, decreases device size, enhances portability and circuit reliability, and expands the scope of application.
Smart Images
Figure CN224520723U_ABST
Abstract
Claims
1. An automobile emergency starting power supply device characterized by comprising: include: The battery pack is provided with charging and discharging terminals; A bidirectional buck-boost charging circuit is provided, wherein the first terminal of the bidirectional buck-boost charging circuit is connected to the charging and discharging terminals of the battery pack, and the bidirectional buck-boost charging circuit is configured to boost or buck the electrical energy provided by the battery pack in a first conducting state and output it through the second terminal of the bidirectional buck-boost charging circuit, and to boost or buck the electrical energy input to the second terminal of the bidirectional buck-boost charging circuit in a second conducting state and input it to the battery pack. A switching unit includes a first terminal, a second terminal, and a third terminal. The first terminal of the switching unit is connected to the second terminal of the bidirectional buck-boost charging circuit. The switching unit is configured to conduct the current path from the first terminal to the second terminal in a first switching state, and to conduct the current path from the third terminal to the first terminal in a second switching state. The first discharge output interface is connected to the second end of the switch switching unit; The charging input interface is connected to the third end of the switch unit.
2. The automobile emergency start power supply device according to claim 1, characterized in that, It also includes a discharge circuit and a second discharge output interface. The charging and discharging terminals of the battery pack are connected to the second discharge output interface through the discharge circuit. The discharge circuit is configured to boost or buck the electrical energy provided by the battery pack or output it to the second discharge output interface.
3. The automotive emergency start power supply device according to claim 1, characterized by, It also includes a second discharge output interface, and the switch switching unit further includes a fourth terminal. The second discharge output interface is connected to the fourth terminal of the switch switching unit. The switch switching unit is also configured to conduct the current path from the first terminal to the fourth terminal of the switch switching unit in a third switch state.
4. The automotive emergency start power supply device of claim 1, wherein The bidirectional buck-boost charging circuit includes a first switching transistor, a second switching transistor, an inductor, a first capacitor, and a second capacitor. The two ends of the first capacitor are connected to the charging and discharging terminals of the battery pack. The first end of the first switching transistor is connected to the first end of the first capacitor. The second end of the first switching transistor is connected to the first end of the second switching transistor and the first end of the inductor. The second end of the second switching transistor and the second end of the inductor are connected to the two ends of the second capacitor, and the two ends of the second capacitor are connected to the first end of the bidirectional buck-boost charging circuit.
5. The automotive emergency start power supply device according to claim 4, characterized by The switching unit includes a third switching transistor and a fourth switching transistor. When the third switching transistor is turned on, the current path from the first terminal to the second terminal of the switching unit is turned on. When the fourth switching transistor is turned on, the current path from the third terminal to the first terminal of the switching unit is turned on.
6. The automotive emergency jump starter device according to claim 5, characterized in that, It also includes a controller, the first output terminal of which is connected to the control terminal of the bidirectional buck-boost charging circuit, and the second output terminal of which is connected to the control terminal of the switching unit.
7. The automotive emergency start power supply device of claim 6, wherein It also includes a first inverter and a second inverter. The first output terminal of the controller is connected to the control terminal of the first switching transistor and the input terminal of the first inverter, respectively. The output terminal of the first inverter is connected to the control terminal of the second switching transistor. The second output terminal of the controller is connected to the control terminal of the third switching transistor and the input terminal of the second inverter, respectively. The output terminal of the second inverter is connected to the control terminal of the fourth switching transistor.
8. The automotive emergency start power supply device of claim 6, wherein, It also includes a switching operation switch, which is connected to the controller via a key signal circuit. The controller is configured to switch the output voltage of the first output terminal and the output voltage of the second output terminal in response to an input signal from the key signal circuit.
9. The automotive emergency start power supply device of claim 6, wherein, It also includes a signal acquisition circuit, the output of which is connected to the signal input of the controller. The signal acquisition circuit includes at least one of a temperature acquisition circuit, a battery voltage acquisition circuit, and a charging output voltage acquisition circuit.
10. The automotive emergency start power supply device of claim 6, wherein, It also includes a charging current detection circuit, the output of which is connected to the signal input of the controller.