Emergency starting power supply

Abstract

The utility model discloses an emergency starting power supply, which comprises a battery pack and a controller, the cathode of the battery pack forms a cathode output port after passing through a detection protection circuit, and the anode of the battery pack forms an anode output port; the driving end of the controller is connected with a driving resistor R6 and then is connected with the detection protection circuit; the cathode output port and the anode output port are electrically connected with a conductive material respectively, for example, the cathode output port and the anode output port can be connected with a conductive clamp or an iron wire, a copper wire, a storage battery wire clamp and the like with the sectional area larger than 2 mm < 2 >. Compared with the prior art, the utility model has the advantages of simple structure, charging at any time, large current output for starting the automobile, and effective control of short circuit of the metal contact of the output port and large current output when the positive electrode and the negative electrode are reversely connected.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, specifically relating to an emergency jump starter. Background Technology

[0002] With the continuous development of technology, various household appliances and means of transportation have entered people's lives and gradually become necessities for their daily lives. Cars, a mode of transportation that has existed for over a century, have become the preferred mode of transport for the vast majority of people for travel and tourism. However, cars often encounter problems such as failing to start due to insufficient battery power or low temperature.

[0003] Many types of emergency jump starters are available on the market, but they often lack the ability to protect against short circuits and reverse connections at the output terminal metal contacts, posing a safety hazard. Relay protection is another option, but relays suffer from drawbacks such as carbon buildup on contacts, short lifespan, and large size, leading to uncertainties in protection regardless of whether they are externally or internally connected. Therefore, obtaining a reliable emergency jump starter is crucial. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, this utility model provides an emergency start-up power supply, including a battery pack and a controller. The negative terminal of the battery pack forms a negative output port after passing through a detection and protection circuit, and the positive terminal of the battery pack forms a positive output port.

[0005] The controller's drive terminal is connected to the drive resistor R6 and then to the detection and protection circuit.

[0006] The detection and protection circuit includes MOSFETs Q1, Q2, Q21, and Q22. The negative terminal of the battery pack is connected to the drain of MOSFET Q1, the source of MOSFET Q1 is connected to the source of MOSFET Q21, and the drain of MOSFET Q21 outputs a negative output port.

[0007] The negative terminal of the battery pack is connected to the drain of MOSFET Q2, the source of MOSFET Q2 is connected to the source of MOSFET Q22, the drain of MOSFET Q22 outputs a negative output port, the drain of MOSFET Q1 is connected to the drain of MOSFET Q2, and the gates of MOSFETs Q1, Q2, Q21, and Q22 are all connected to the drive terminal of the controller through a drive resistor R6.

[0008] The source of the MOSFET Q1 is connected to the drive resistor R6 through the first resistor R1. Under normal conditions, the controller outputs a drive voltage to the drive resistor R6, and the MOSFET is turned on. At the same time, the controller monitors the voltage at the positive and negative terminals. When a short circuit or reverse connection occurs, the voltage at the positive and negative terminals will drop rapidly. When the voltage drops to the set voltage point, the controller protection is triggered, and the controller stops outputting a drive voltage to the drive resistor R6, thereby turning off the MOSFET.

[0009] The drain of the MOSFET Q21 is connected to a release circuit, which includes a third resistor R3, a third diode D3, and a MOSFET Q4 connected in sequence to the drain of the MOSFET Q21. The gate of the MOSFET Q4 outputs a release terminal through a seventh resistor R7. The source of the MOSFET Q4 is grounded.

[0010] The controller's drive terminal is connected to a drive resistor R6 via a drive circuit. The drive circuit includes: a fourth resistor R4 connected to the controller's drive terminal; a third transistor Q3 connected in series with the fourth resistor R4; a ninth resistor R9 connected to the controller's drive terminal; a fifth transistor Q5 connected in series with the ninth resistor R9; the emitter of the third transistor Q3 is connected to the emitter of the fifth transistor Q5; and the emitter of the third transistor Q3 is connected to the drive resistor R6. The positive terminal of the battery pack is connected to the collector of the third transistor Q3 via a first diode D1, and the first diode D1 is grounded via a first capacitor C1. The collector of the fifth transistor Q5 is grounded.

[0011] It also includes a main controller, whose drive port is connected to the battery management circuit via an isolation circuit. The controller is also connected to a temperature detection circuit, an alarm circuit, and an indicator circuit. The controller is connected to the negative output port via a twelfth resistor R12, and grounded via a fifth diode D5. The controller also has a programming port.

[0012] The negative and positive output ports are electrically connected to conductive materials, such as conductive clips or materials with a cross-sectional area greater than 2 mm². 2 Iron wire, copper wire, battery clamps, etc.

[0013] The positive and negative output ports are connected to the positive and negative terminals of the car's starting circuit. If they are connected correctly, the controller outputs a drive voltage to the drive resistor R6, and the MOSFET turns on. At the same time, the controller monitors the voltage at the positive and negative terminals. When a short circuit or reverse connection occurs, the voltage at the positive and negative terminals will drop rapidly. When the voltage drops to the set voltage point, the controller protection is triggered, and the controller stops outputting a drive voltage to the drive resistor R6, thereby turning off the MOSFET.

[0014] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, can be charged at any time, can output a large current for car starting, and can effectively control the short circuit of the metal contacts of the output port and the large current output when the positive and negative terminals are reversed. Attached Figure Description

[0015] Figure 1 This is the circuit diagram of the main controller of this utility model;

[0016] Figure 2 This is the circuit diagram of the controller of this utility model;

[0017] Figure 3 This is the detection and protection circuit diagram of this utility model;

[0018] Figure 4 This is a circuit diagram of the isolation circuit portion of this utility model;

[0019] Figure 5 The circuit diagrams are for other parts of this utility model; Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0021] Referring to the accompanying drawings, the present invention adopts the following technical solution: the present invention provides an emergency start-up power supply, including a battery pack and a controller. The negative terminal of the battery pack forms a negative output port after passing through a detection and protection circuit, and the positive terminal of the battery pack forms a positive output port.

[0022] The controller's drive terminal is connected to the drive resistor R6 and then to the detection and protection circuit.

[0023] The detection and protection circuit includes MOSFETs Q1, Q2, Q21, and Q22. The negative terminal of the battery pack is connected to the drain of MOSFET Q1, the source of MOSFET Q1 is connected to the source of MOSFET Q21, and the drain of MOSFET Q21 outputs a negative output port.

[0024] The negative terminal of the battery pack is connected to the drain of MOSFET Q2, the source of MOSFET Q2 is connected to the source of MOSFET Q22, the drain of MOSFET Q22 outputs a negative output port, the drain of MOSFET Q1 is connected to the drain of MOSFET Q2, and the gates of MOSFETs Q1, Q2, Q21, and Q22 are all connected to the drive terminal of the controller through a drive resistor R6.

[0025] The source of the MOSFET Q1 is connected to the drive resistor R6 through the first resistor R1. Under normal conditions, the controller outputs a drive voltage to the drive resistor R6, and the MOSFET is turned on. At the same time, the controller monitors the voltage at the positive and negative terminals. When a short circuit or reverse connection occurs, the voltage at the positive and negative terminals will drop rapidly. When the voltage drops to the set voltage point, the controller protection is triggered, and the controller stops outputting a drive voltage to the drive resistor R6, thereby turning off the MOSFET.

[0026] The drain of the MOSFET Q21 is connected to a release circuit, which includes a third resistor R3, a third diode D3, and a MOSFET Q4 connected in sequence to the drain of the MOSFET Q21. The gate of the MOSFET Q4 outputs a release terminal through a seventh resistor R7. The source of the MOSFET Q4 is grounded.

[0027] The controller's drive terminal is connected to a drive resistor R6 via a drive circuit. The drive circuit includes: a fourth resistor R4 connected to the controller's drive terminal; a third transistor Q3 connected in series with the fourth resistor R4; a ninth resistor R9 connected to the controller's drive terminal; a fifth transistor Q5 connected in series with the ninth resistor R9; the emitter of the third transistor Q3 is connected to the emitter of the fifth transistor Q5; and the emitter of the third transistor Q3 is connected to the drive resistor R6. The positive terminal of the battery pack is connected to the collector of the third transistor Q3 via a first diode D1, and the first diode D1 is grounded via a first capacitor C1. The collector of the fifth transistor Q5 is grounded.

[0028] It also includes a main controller, whose drive port is connected to the battery management circuit via an isolation circuit. The controller is also connected to a temperature detection circuit, an alarm circuit, and an indicator circuit. The controller is connected to the negative output port via a twelfth resistor R12, and grounded via a fifth diode D5. The controller also has a programming port.

[0029] The negative and positive output ports are electrically connected to conductive materials, such as conductive clips or materials with a cross-sectional area greater than 2 mm². 2 Iron wire, copper wire, battery clamps, etc.

[0030] The positive and negative output ports are connected to the positive and negative terminals of the car's starting circuit. If they are connected correctly, the controller outputs a drive voltage to the drive resistor R6, and the MOSFET turns on. At the same time, the controller monitors the voltage at the positive and negative terminals. When a short circuit or reverse connection occurs, the voltage at the positive and negative terminals will drop rapidly. When the voltage drops to the set voltage point, the controller protection is triggered, and the controller stops outputting a drive voltage to the drive resistor R6, thereby turning off the MOSFET.

[0031] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, can be charged at any time, can output a large current for car starting, and can effectively control the short circuit of the metal contacts of the output port and the large current output when the positive and negative terminals are reversed.

[0032] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An emergency start-up power supply, characterized in that: The system includes a battery pack and a controller. The negative terminal of the battery pack forms a negative output port after passing through a detection and protection circuit, and the positive terminal of the battery pack forms a positive output port. The controller's drive terminal is connected to the drive resistor R6 and then to the detection and protection circuit. The detection and protection circuit includes MOSFETs Q1, Q2, Q21, and Q22. The negative terminal of the battery pack is connected to the drain of MOSFET Q1, the source of MOSFET Q1 is connected to the source of MOSFET Q21, and the drain of MOSFET Q21 outputs a negative output port. The negative terminal of the battery pack is connected to the drain of MOSFET Q2, the source of MOSFET Q2 is connected to the source of MOSFET Q22, the drain of MOSFET Q22 outputs a negative output port, the drain of MOSFET Q1 is connected to the drain of MOSFET Q2, and the gates of MOSFETs Q1, Q2, Q21, and Q22 are all connected to the drive terminal of the controller through a drive resistor R6.

2. The emergency start-up power supply according to claim 1, characterized in that: The source of the MOS transistor Q1 is connected to the drive resistor R6 through the first resistor R1.

3. The emergency start-up power supply according to claim 1, characterized in that: The drain of the MOSFET Q21 is connected to a release circuit, which includes a third resistor R3, a third diode D3, and a MOSFET Q4 connected in sequence to the drain of the MOSFET Q21. The gate of the MOSFET Q4 outputs a release terminal through a seventh resistor R7. The source of the MOSFET Q4 is grounded.

4. The emergency start-up power supply according to claim 1, characterized in that: The controller's drive terminal is connected to a drive resistor R6 via a drive circuit. The drive circuit includes: a fourth resistor R4 connected to the controller's drive terminal; a third transistor Q3 connected in series with the fourth resistor R4; a ninth resistor R9 connected to the controller's drive terminal; a fifth transistor Q5 connected in series with the ninth resistor R9; the emitter of the third transistor Q3 is connected to the emitter of the fifth transistor Q5; and the emitter of the third transistor Q3 is connected to the drive resistor R6. The positive terminal of the battery pack is connected to the collector of the third transistor Q3 via a first diode D1, and the first diode D1 is grounded via a first capacitor C1. The collector of the fifth transistor Q5 is grounded.

5. The emergency start-up power supply according to claim 1, characterized in that: It also includes a master controller, whose drive port is connected to the battery management circuit via an isolation circuit.

6. The emergency start-up power supply according to claim 1, characterized in that: The controller is also connected to a temperature detection circuit.

7. The emergency start-up power supply according to claim 1, characterized in that: The controller is also connected to an alarm circuit.

8. The emergency start-up power supply according to claim 7, characterized in that: The controller is also connected to an indicator circuit.

9. The emergency start-up power supply according to claim 1, characterized in that: The controller is connected to the negative output port through the twelfth resistor R12, and the controller and the twelfth resistor R12 are grounded through the fifth diode D5.

10. The emergency start-up power supply according to claim 1, characterized in that: The negative output port and the positive output port are electrically connected to conductive materials, respectively.

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