Emergency starting power supply applied to 12V / 24V output

Abstract

The invention discloses an emergency starting power supply applied to 12V / 24V output and an intelligent 12V / 24V automatic identification output method, and relates to the technical field of emergency starting power supplies, the emergency starting power supply comprises a charging input interface, a charging parallel control unit, a first 12V battery unit, a second 12V battery unit, an emergency output serial / parallel control unit, an emergency starting output interface and a main control unit; the charging input control and the charging output control of the two 12V batteries can be formed; when the two 12V batteries are charged, parallel control can be carried out on the two 12V batteries during charging input, so that the two 12V batteries can be charged in parallel at the same time, namely, the two 12V batteries are charged at equal voltage; when emergency start output is carried out, two 12V batteries can be connected in series or in parallel; when a 24V heavy truck power supply is started, superposition to 24V can be controlled in a series connection mode and output is carried out at the same time. When a 12V family car power supply is started, simultaneous power supply output can be controlled in a parallel connection mode.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency power supplies, and in particular to an emergency starting power supply applied to 12V / 24V output and an intelligent 12V / 24V automatic identification and output method. Background Art

[0002] Currently, the emergency starting power supplies available on the market that can be used for emergency starting of 12V family cars and 24V heavy-duty trucks mainly use multiple strings of built-in batteries. When outputting 12V starting, half of the built-in batteries are used (the other half of the built-in batteries are not used), and when outputting 24V starting, all the built-in batteries are used. However, when charging, all the built-in batteries are charged simultaneously. This design will cause battery imbalance after using the 12V starting function, and ultimately cause the risk of battery damage. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution to the above-mentioned problems.

[0004] To achieve the above object, the present invention provides the following technical solution: an emergency starting power supply for 12V / 24V output, comprising Charging input interface, Charging parallel control unit, First 12V battery unit, Second 12V battery unit, Emergency output series / parallel control unit, Emergency start output interface, Main control unit, in, The input end of the parallel charging control unit is electrically connected to the charging input interface, the first parallel control end of the parallel charging control unit is electrically connected to the input end of the first 12V battery unit, the second parallel control end of the parallel charging control unit is electrically connected to the input end of the second 12V battery unit, and the signal end of the parallel charging control unit is electrically connected to the charging input parallel control end of the main control unit. The parallel charging control unit receives the charging input control signal from the main control unit to control the parallel charging of the first 12V battery unit and the second 12V battery unit; The first input end of the emergency output series / parallel control unit is electrically connected to the output end of the first 12V battery unit, the second input end of the emergency output series / parallel control unit is electrically connected to the output end of the second 12V battery unit, the output end of the emergency output series / parallel control unit is electrically connected to the emergency start output interface, the signal end of the emergency output series / parallel control unit is electrically connected to the emergency output series / parallel control end of the main control unit, the emergency output series / parallel control unit receives the emergency output parallel control signal of the main control unit to control the parallel output of the first 12V battery unit and the second 12V battery unit, or receives the emergency output series control signal of the main control unit to control the series output of the first 12V battery unit and the second 12V battery unit.

[0005] Further technical solution of the present invention: The emergency output series / parallel control unit includes a starting control unit and a relay control unit. The main control unit controls the relay of the starting control unit through the relay control unit, and controls the series / parallel output of the first 12V battery unit and the second 12V battery unit by controlling the attraction / cancellation of the relay.

[0006] Further technical solution of the present invention: the starting control unit includes relay KA1, relay KA3, relay KA5, and relay KA6; The positive electrode B1+ of the output terminal of the first 12V battery unit is electrically connected to the first contact of the relay KA1, the second contact of the relay KA1 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA1 of the relay control unit; The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA3, the second contact of the relay KA3 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA3 is electrically connected to the control terminal KA3 of the relay control unit; The negative output terminal B2- of the second 12V battery unit is electrically connected to the first contact of the relay KA5. The second contact of the relay KA5 is connected to the OUTPUT- terminal of the emergency start output interface. One end of the coil of the relay KA5 is electrically connected to the control terminal KA5 of the relay control unit. The first contact of the relay KA5 is also electrically connected to the negative output terminal B1- of the first 12V battery unit. The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA6, the second contact of the relay KA6 is electrically connected to the negative electrode B1- of the output terminal of the first 12V battery unit, and one end of the coil of the relay KA6 is connected to the control terminal KA6 of the relay control unit; The other end of the coil of relay KA1, the other end of the coil of relay KA3, the other end of the coil of relay KA5, and the other end of the coil of relay KA6 are suitable for being electrically connected to the positive output terminal B1+ of the first 12V battery unit or to the positive output terminal B2+ of the second 12V battery unit to obtain power.

[0007] Further technical solution of the present invention: the relay control unit includes a transistor Q21, a transistor Q223, a transistor Q36, and a transistor Q42; The base of the transistor Q21 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q21 is electrically connected to one end of the coil of the relay KA1, and the emitter of the transistor Q21 is grounded; The base of the transistor Q223 is electrically connected to the emergency output series / parallel control terminal 12V of the main control unit, the collector of the transistor Q223 is electrically connected to one end of the coil of the relay KA5, and the emitter of the transistor Q223 is grounded; The base of the transistor Q36 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q36 is electrically connected to one end of the coil of the relay KA3, and the emitter of the transistor Q36 is grounded; The base of transistor Q42 is electrically connected to the emergency output series / parallel control terminal 24V of the main control unit, the collector of transistor Q42 is electrically connected to one end of the coil of relay KA6, and the emitter of transistor Q42 is grounded.

[0008] A further technical solution of the present invention: the relay control unit further includes a diode D30, a diode D33, and a diode D37; The anode of the diode D30 is electrically connected to the base of the transistor Q223, and the cathode of the diode D30 is electrically connected to the collector of the transistor Q42; The anode of the diode D33 is electrically connected to the base of the transistor Q42, and the cathode of the diode D33 is electrically connected to the collector of the transistor Q223; An anode of the diode D37 is electrically connected to the base of the transistor Q21 , and a cathode of the diode D37 is electrically connected to the collector of the transistor Q42 .

[0009] A further technical solution of the present invention is as follows: the starting control unit further includes a relay KA2 and a relay KA4; The positive electrode B1+ of the output terminal of the first 12V battery unit is electrically connected to the first contact of the relay KA2, the second contact of the relay KA2 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA2 of the relay control unit; The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA4, the second contact of the relay KA4 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA4 is electrically connected to the control terminal KA4 of the relay control unit; The other end of the coil of relay KA2 and the other end of the coil of relay KA4 are suitable for being electrically connected to the output positive terminal B1+ of the first 12V battery unit or the output positive terminal B2+ of the second 12V battery unit to obtain power.

[0010] A further technical solution of the present invention: the relay control unit further includes a transistor Q22 and a transistor Q41; The base of the transistor Q22 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q22 is electrically connected to one end of the coil of the relay KA2, and the emitter of the transistor Q22 is grounded; The base of the transistor Q41 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q41 is electrically connected to one end of the coil of the relay KA4, and the emitter of the transistor Q41 is grounded.

[0011] A further technical solution of the present invention: the relay control unit further includes a diode D34; An anode of the diode D34 is electrically connected to the base of the transistor Q22 , and a cathode of the diode D34 is electrically connected to the collector of the transistor Q42 .

[0012] A further technical solution of the present invention includes: a vehicle battery voltage detection unit; The input end of the car battery voltage detection unit is electrically connected to the emergency start output interface, the detection end VCAR of the main control unit is electrically connected to the detection output end of the car battery voltage detection unit, and the main control unit performs voltage detection on the external car battery connected to the emergency start output interface through the car battery voltage detection unit.

[0013] Compared with the prior art, the beneficial effects of the present technical solution are: through the above-mentioned setting, the charging input and charging output of the two 12V batteries can be controlled; when charging the two 12V batteries, the two 12V batteries can be controlled in parallel during the charging input, so that the two 12V batteries can be charged simultaneously in parallel, that is, equal-voltage charging; when performing emergency starting output, the two 12V batteries can be connected in series or in parallel; that is, when used for starting a 24V heavy truck power supply, it can be controlled to be superimposed to 24V and output simultaneously in series; when used for starting a 12V family car power supply, it can be controlled to be simultaneously powered and output in parallel.

[0014] Whether it is a 12V car or a 24V car, all battery cell outputs can be used, which not only makes the output capacity stronger but also can use the battery in a balanced manner to avoid damage due to battery imbalance.

[0015] The present invention also provides the following technical solution: an intelligent 12V / 24V automatic identification and output method, comprising the following steps: Step 1: Loading the car battery voltage identification program module, 12V output parallel control program module, 24V output series control program module, voltage output setting program module, setting voltage and identification voltage comparison program module, and prohibiting / enabling voltage output program module into the program memory of the single-chip microcomputer U10, wherein the instructions of each program module are suitable for being loaded and executed by the main control processor of the single-chip microcomputer U10; The vehicle battery voltage identified by the vehicle battery voltage identification program module includes 12V voltage type and 24V voltage type, and the output voltage set by the voltage output setting program module includes 12V voltage output and 24V output voltage; Step 2: The user sets the output voltage to 12V or 24V to obtain the set output voltage. Step 3: Identify the voltage of the connected car battery using the car battery voltage identification program module to obtain an identified battery voltage; Step 4: Compare the set output voltage with the identification battery voltage through the set voltage and identification voltage comparison program module to obtain the identification result; Step 5: If the identification result obtained in step 4 is that the two are consistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output enabling state, and the process proceeds to step 6; if the identification result obtained in step 4 is that the two are inconsistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output prohibition state; Step six, when the battery voltage is identified as 12V, start the 12V output parallel control program module to make the first 12V battery unit and the second 12V battery unit output in parallel; when the battery voltage is identified as 24V, start the 24V output series control program module to make the first 12V battery unit and the second 12V battery unit output in series.

[0016] Compared with the existing technology, the beneficial effect of this technical solution is that: while meeting the requirements of 24V series output control and 12V parallel output control, it can also realize active selection of the user end and automatic identification of the output terminal, thereby achieving double safety protection, that is, only when the output voltage selected by the user is the same as the identified car battery voltage type, is the output allowed, and emergency power supply to the car battery is performed, which can better protect the emergency starting power supply and the car battery; and through the above-mentioned control method, the control is more intelligent.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A circuit block diagram of the present invention; Figure 2 This is a circuit diagram of the charging parallel control unit, the first 12V battery unit, the second 12V battery unit, the vehicle battery voltage detection unit, and the starting control unit of the present invention; Figure 3 A circuit diagram of a relay control unit of the present invention; Figure 4 This is a circuit diagram of the main control unit of the present invention; Figure 5 This is a principle block diagram of the program module loaded in the single chip microcomputer involved in the present invention. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5 , used for emergency starting power supply with 12V / 24V output, including a charging input interface 10, a charging parallel control unit 20, a first 12V battery unit 30, a second 12V battery unit 40, an emergency output series / parallel control unit 50, an emergency starting output interface 60 and a main control unit 70.

[0022] The input end of the charging parallel control unit is electrically connected to the charging input interface, the first parallel control end of the charging parallel control unit is electrically connected to the input end of the first 12V battery unit, the second parallel control end of the charging parallel control unit is electrically connected to the input end of the second 12V battery unit, and the signal end of the charging parallel control unit is electrically connected to the charging input parallel control end of the main control unit. The charging parallel control unit receives the charging input control signal of the main control unit to control the parallel charging of the first 12V battery unit and the second 12V battery unit.

[0023] The first input end of the emergency output series / parallel control unit is electrically connected to the output end of the first 12V battery unit, the second input end of the emergency output series / parallel control unit is electrically connected to the output end of the second 12V battery unit, the output end of the emergency output series / parallel control unit is electrically connected to the emergency start output interface, the signal end of the emergency output series / parallel control unit is electrically connected to the emergency output series / parallel control end of the main control unit, the emergency output series / parallel control unit receives the emergency output parallel control signal of the main control unit to control the parallel output of the first 12V battery unit and the second 12V battery unit, or receives the emergency output series control signal of the main control unit to control the series output of the first 12V battery unit and the second 12V battery unit.

[0024] Through the above settings, the charging input and charging output of the two 12V batteries can be controlled; when charging the two 12V batteries, the two 12V batteries can be controlled in parallel during the charging input, so that the two 12V batteries can be charged simultaneously in parallel, that is, equal-voltage charging; when performing emergency starting output, the two 12V batteries can be connected in series or in parallel; that is, when used for starting a 24V heavy-duty truck power supply, it can be controlled to be superimposed to 24V in series and output simultaneously; when used for starting a 12V family car power supply, it can be controlled to be connected in parallel for simultaneous power output.

[0025] Whether it is a 12V car or a 24V car, all battery cell outputs can be used, which not only makes the output capacity stronger but also can use the battery in a balanced manner to avoid damage due to battery imbalance.

[0026] In some embodiments, the emergency starting power supply also includes a command input unit 90, which includes, for example, a button assembly, which includes, for example, a 12V / 24V voltage selection button, a power button, and other buttons. The main control unit receives the trigger signals of the above buttons and performs corresponding control.

[0027] For example, the system receives a trigger signal from a 12V / 24V voltage switching button to switch between 12V parallel control output and 24V series control output. The 12V parallel control output controls the first and second 12V battery cells to output in parallel; the 24V series control output controls the first and second 12V battery cells to output in series, resulting in a superimposed voltage.

[0028] In some embodiments, the main control unit includes a single chip microcomputer U10 and its peripheral control circuits.

[0029] In some embodiments, the emergency output series / parallel control unit 50 includes a start control unit 510 and a relay control unit 520. The main control unit controls the relay of the start control unit through the relay control unit, thereby controlling the series / parallel output of the first 12V battery unit and the second 12V battery unit by controlling the attraction / cancellation of the relay.

[0030] In some embodiments, the starting control unit includes relay KA1 , relay KA3 , relay KA5 , and relay KA6 .

[0031] The positive output terminal B1+ of the first 12V battery unit is electrically connected to the first contact of the relay KA1, the second contact of the relay KA1 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA1 of the relay control unit.

[0032] The positive output terminal B2+ of the second 12V battery unit is electrically connected to the first contact of the relay KA3, the second contact of the relay KA3 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA3 is electrically connected to the control terminal KA3 of the relay control unit.

[0033] The negative pole B2- of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA5, the second contact of the relay KA5 is connected to the OUTPUT- terminal of the emergency start output interface, one end of the coil of the relay KA5 is electrically connected to the control terminal KA5 of the relay control unit, and the first contact of the relay KA5 is also electrically connected to the negative pole B1- of the output terminal of the first 12V battery unit.

[0034] The positive output terminal B2+ of the second 12V battery unit is electrically connected to the first contact of the relay KA6, the second contact of the relay KA6 is electrically connected to the negative output terminal B1- of the first 12V battery unit, and one end of the coil of the relay KA6 is connected to the control terminal KA6 of the relay control unit.

[0035] The other end of the coil of relay KA1, the other end of the coil of relay KA3, the other end of the coil of relay KA5, and the other end of the coil of relay KA6 are suitable for being electrically connected to the positive output terminal B1+ of the first 12V battery unit or to the positive output terminal B2+ of the second 12V battery unit to obtain power.

[0036] In some embodiments, the relay control unit includes a transistor Q21 , a transistor Q223 , a transistor Q36 , and a transistor Q42 .

[0037] The base of the transistor Q21 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q21 is electrically connected to one end of the coil of the relay KA1, and the emitter of the transistor Q21 is grounded.

[0038] The base of transistor Q223 is electrically connected to the emergency output series / parallel control terminal 12V of the main control unit, the collector of transistor Q223 is electrically connected to one end of the coil of relay KA5, and the emitter of transistor Q223 is grounded.

[0039] The base of the transistor Q36 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q36 is electrically connected to one end of the coil of the relay KA3, and the emitter of the transistor Q36 is grounded.

[0040] The base of transistor Q42 is electrically connected to the emergency output series / parallel control terminal 24V of the main control unit, the collector of transistor Q42 is electrically connected to one end of the coil of relay KA6, and the emitter of transistor Q42 is grounded.

[0041] In some embodiments, the relay control unit further includes a diode D30 , a diode D33 , and a diode D37 .

[0042] An anode of the diode D30 is electrically connected to the base of the transistor Q223 , and a cathode of the diode D30 is electrically connected to the collector of the transistor Q42 .

[0043] An anode of the diode D33 is electrically connected to the base of the transistor Q42 , and a cathode of the diode D33 is electrically connected to the collector of the transistor Q223 .

[0044] An anode of the diode D37 is electrically connected to the base of the transistor Q21 , and a cathode of the diode D37 is electrically connected to the collector of the transistor Q42 .

[0045] In some embodiments, the starting control unit further includes a relay KA2 and a relay KA4.

[0046] The positive output terminal B1+ of the first 12V battery unit is electrically connected to the first contact of the relay KA2, the second contact of the relay KA2 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA2 of the relay control unit.

[0047] The positive output terminal B2+ of the second 12V battery unit is electrically connected to the first contact of the relay KA4, the second contact of the relay KA4 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA4 is electrically connected to the control terminal KA4 of the relay control unit.

[0048] The other end of the coil of relay KA2 and the other end of the coil of relay KA4 are suitable for being electrically connected to the output positive terminal B1+ of the first 12V battery unit or the output positive terminal B2+ of the second 12V battery unit to obtain power.

[0049] In some embodiments, the relay control unit further includes a transistor Q22 and a transistor Q41.

[0050] The base of the transistor Q22 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q22 is electrically connected to one end of the coil of the relay KA2, and the emitter of the transistor Q22 is grounded.

[0051] The base of the transistor Q41 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q41 is electrically connected to one end of the coil of the relay KA4, and the emitter of the transistor Q41 is grounded.

[0052] like Figure 2 As shown, relay KA1, relay KA2, relay KA3, and relay KA4 are all normally open relays, and dual relays are used to control the conduction between the B1+ terminal and the OUTPUT+ terminal, and dual relays are used to control the conduction between the B2+ terminal and the OUTPUT+ terminal, which effectively ensures that when any relay control between the B1+ terminal and the OUTPUT+ terminal fails or when any relay control between the B2+ terminal and the OUTPUT+ terminal fails, the corresponding lines can still be controlled to be conductive, and parallel control output is safer.

[0053] In some embodiments, the relay control unit further includes a diode D34.

[0054] An anode of the diode D34 is electrically connected to the base of the transistor Q22 , and a cathode of the diode D34 is electrically connected to the collector of the transistor Q42 .

[0055] Diodes D30, D33, D34, and D37 function as a 12V / 24V interlock. When a 12V vehicle output is active, the 24V control is locked and inoperable; when a 24V vehicle output is active, the 12V control is locked and inoperable, effectively ensuring safety.

[0056] In some embodiments, the emergency starting power supply further includes a car battery voltage detection unit 80 .

[0057] The input end of the car battery voltage detection unit is electrically connected to the emergency start output interface, the detection end VCAR of the main control unit is electrically connected to the detection output end of the car battery voltage detection unit, and the main control unit performs voltage detection on the external car battery connected to the emergency start output interface through the car battery voltage detection unit.

[0058] In some embodiments, the vehicle battery voltage detection unit includes a resistor R69 , a resistor R68 , a capacitor C79 , and a Zener diode ZD3 .

[0059] One end of the resistor R69 is electrically connected to the OUTPUT+ end of the emergency start output interface through the resistor R68, the other end of the resistor R69 is grounded, and the two ends of the capacitor C79 are correspondingly connected to the two ends of the resistor R69.

[0060] The cathode of the Zener diode ZD3 is electrically connected to one end of the resistor R69 , the anode of the Zener diode ZD3 is electrically connected to the other end of the resistor R69 , and one end of the resistor R69 is electrically connected to the detection terminal VCAR of the main control unit.

[0061] In some embodiments, the parallel charging control unit includes a field effect transistor MOS1, a field effect transistor MOS2, a field effect transistor MOS3, a field effect transistor MOS4, a transistor Q23, a resistor R73, a resistor R113, a resistor R129, a resistor R164, and a resistor R165.

[0062] The charging input parallel control terminal 12V-C / D of the main control unit controls the input terminal P1+ of the first 12V battery unit to be connected with the input terminal P2+ of the second 12V battery unit through the field effect tube MOS1 and the field effect tube MOS2. The charging input parallel control terminal CHARGE-EN of the main control unit controls the input terminal P2+ of the first 12V battery unit to be connected with the input terminal P1+ of the second 12V battery unit through the field effect tube MOS3 and the field effect tube MOS4.

[0063] In this embodiment, an intelligent 12V / 24V automatic identification output method is actually proposed, including the following steps: Step 1: Load the car battery voltage identification program module 701, the 12V output parallel control program module 702, the 24V output series control program module 703, the voltage output setting program module 704, the set voltage and identification voltage comparison program module 705, and the voltage output prohibition / enabling program module 706 into the program memory 11 of the single-chip computer U10. The instructions of each program module are suitable for being loaded and executed by the main control processor 12 of the single-chip computer U10. The vehicle battery voltage identified by the vehicle battery voltage identification program module includes 12V voltage type and 24V voltage type, and the output voltage set by the voltage output setting program module includes 12V voltage output and 24V output voltage; Step 2: The user sets the output voltage to 12V or 24V to obtain the set output voltage. Step 3: Identify the voltage of the connected car battery using the car battery voltage identification program module to obtain an identified battery voltage; Step 4: Compare the set output voltage with the identification battery voltage through the set voltage and identification voltage comparison program module to obtain the identification result; Step 5: If the identification result obtained in step 4 is that the two are consistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output enabling state, and the process proceeds to step 6; if the identification result obtained in step 4 is that the two are inconsistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output prohibition state; Step six, when the battery voltage is identified as 12V, start the 12V output parallel control program module to make the first 12V battery unit and the second 12V battery unit output in parallel; when the battery voltage is identified as 24V, start the 24V output series control program module to make the first 12V battery unit and the second 12V battery unit output in series.

[0064] While meeting the requirements of 24V series output control and 12V parallel output control, it can also realize active selection of the user end and automatic identification of the output terminal, realizing double safety protection, that is, only when the output voltage selected by the user is the same as the identified car battery voltage type, is the output allowed to provide emergency power supply to the car battery, which can better protect the emergency starting power supply and the car battery; and through the above control method, the control is more intelligent.

[0065] In some embodiments, the emergency starting power supply is further provided with an information prompt unit 110. When the comparison result output by the set voltage and the identification voltage comparison program module is inconsistent, an error prompt is also given through the information prompt unit.

[0066] The information prompting unit includes, for example, indicator lights, display screens, speakers and other prompting devices.

[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. Applicable to 12V / 24V output emergency starting power supply, characterized by: include Charging input interface, Charging parallel control unit, First 12V battery unit, Second 12V battery unit, Emergency output series / parallel control unit, Emergency start output interface, Main control unit, in, The input end of the parallel charging control unit is electrically connected to the charging input interface, the first parallel control end of the parallel charging control unit is electrically connected to the input end of the first 12V battery unit, the second parallel control end of the parallel charging control unit is electrically connected to the input end of the second 12V battery unit, and the signal end of the parallel charging control unit is electrically connected to the charging input parallel control end of the main control unit. The parallel charging control unit receives the charging input control signal from the main control unit to control the parallel charging of the first 12V battery unit and the second 12V battery unit; The first input end of the emergency output series / parallel control unit is electrically connected to the output end of the first 12V battery unit, the second input end of the emergency output series / parallel control unit is electrically connected to the output end of the second 12V battery unit, the output end of the emergency output series / parallel control unit is electrically connected to the emergency start output interface, the signal end of the emergency output series / parallel control unit is electrically connected to the emergency output series / parallel control end of the main control unit, the emergency output series / parallel control unit receives the emergency output parallel control signal of the main control unit to control the parallel output of the first 12V battery unit and the second 12V battery unit, or receives the emergency output series control signal of the main control unit to control the series output of the first 12V battery unit and the second 12V battery unit.

2. The emergency starting power supply for 12V / 24V output according to claim 1, characterized in that: The emergency output series / parallel control unit includes a starting control unit and a relay control unit. The main control unit controls the relay of the starting control unit through the relay control unit, thereby controlling the series / parallel output of the first 12V battery unit and the second 12V battery unit by controlling the attraction / cancellation of the relay.

3. The emergency starting power supply for 12V / 24V output according to claim 2, characterized in that: The starting control unit includes relay KA1, relay KA3, relay KA5 and relay KA6; The positive electrode B1+ of the output terminal of the first 12V battery unit is electrically connected to the first contact of the relay KA1, the second contact of the relay KA1 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA1 of the relay control unit; The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA3, the second contact of the relay KA3 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA3 is electrically connected to the control terminal KA3 of the relay control unit; The negative output terminal B2- of the second 12V battery unit is electrically connected to the first contact of the relay KA5. The second contact of the relay KA5 is connected to the OUTPUT- terminal of the emergency start output interface. One end of the coil of the relay KA5 is electrically connected to the control terminal KA5 of the relay control unit. The first contact of the relay KA5 is also electrically connected to the negative output terminal B1- of the first 12V battery unit. The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA6, the second contact of the relay KA6 is electrically connected to the negative electrode B1- of the output terminal of the first 12V battery unit, and one end of the coil of the relay KA6 is connected to the control terminal KA6 of the relay control unit; The other end of the coil of relay KA1, the other end of the coil of relay KA3, the other end of the coil of relay KA5, and the other end of the coil of relay KA6 are suitable for being electrically connected to the positive output terminal B1+ of the first 12V battery unit or to the positive output terminal B2+ of the second 12V battery unit to obtain power.

4. The emergency starting power supply for 12V / 24V output according to claim 3, characterized in that: The relay control unit includes transistor Q21, transistor Q223, transistor Q36, and transistor Q42; The base of the transistor Q21 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q21 is electrically connected to one end of the coil of the relay KA1, and the emitter of the transistor Q21 is grounded; The base of the transistor Q223 is electrically connected to the emergency output series / parallel control terminal 12V of the main control unit, the collector of the transistor Q223 is electrically connected to one end of the coil of the relay KA5, and the emitter of the transistor Q223 is grounded; The base of the transistor Q36 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q36 is electrically connected to one end of the coil of the relay KA3, and the emitter of the transistor Q36 is grounded; The base of transistor Q42 is electrically connected to the emergency output series / parallel control terminal 24V of the main control unit, the collector of transistor Q42 is electrically connected to one end of the coil of relay KA6, and the emitter of transistor Q42 is grounded.

5. The emergency starting power supply for 12V / 24V output according to claim 4, characterized in that: The relay control unit also includes a diode D30, a diode D33, and a diode D37; The anode of the diode D30 is electrically connected to the base of the transistor Q223, and the cathode of the diode D30 is electrically connected to the collector of the transistor Q42; The anode of the diode D33 is electrically connected to the base of the transistor Q42, and the cathode of the diode D33 is electrically connected to the collector of the transistor Q223; An anode of the diode D37 is electrically connected to the base of the transistor Q21 , and a cathode of the diode D37 is electrically connected to the collector of the transistor Q42 .

6. The emergency starting power supply for 12V / 24V output according to any one of claims 3 to 5, characterized in that: The starting control unit also includes relay KA2 and relay KA4; The positive electrode B1+ of the output terminal of the first 12V battery unit is electrically connected to the first contact of the relay KA2, the second contact of the relay KA2 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA1 is electrically connected to the control terminal KA2 of the relay control unit; The positive electrode B2+ of the output terminal of the second 12V battery unit is electrically connected to the first contact of the relay KA4, the second contact of the relay KA4 is electrically connected to the OUTPUT+ terminal of the emergency start output interface, and one end of the coil of the relay KA4 is electrically connected to the control terminal KA4 of the relay control unit; The other end of the coil of relay KA2 and the other end of the coil of relay KA4 are suitable for being electrically connected to the output positive terminal B1+ of the first 12V battery unit or the output positive terminal B2+ of the second 12V battery unit to obtain power.

7. The emergency starting power supply for 12V / 24V output according to claim 6, characterized in that: The relay control unit also includes transistor Q22 and transistor Q41; The base of the transistor Q22 is electrically connected to the emergency output series / parallel control terminal K1 of the main control unit, the collector of the transistor Q22 is electrically connected to one end of the coil of the relay KA2, and the emitter of the transistor Q22 is grounded; The base of the transistor Q41 is electrically connected to the emergency output series / parallel control terminal K2 of the main control unit, the collector of the transistor Q41 is electrically connected to one end of the coil of the relay KA4, and the emitter of the transistor Q41 is grounded.

8. The emergency starting power supply for 12V / 24V output according to claim 7, characterized in that: The relay control unit also includes a diode D34; An anode of the diode D34 is electrically connected to the base of the transistor Q22 , and a cathode of the diode D34 is electrically connected to the collector of the transistor Q42 .

9. The emergency starting power supply for 12V / 24V output according to claim 1 or 2 or 3 or 4 or 5 or 7 or 8, characterized in that: Also included is a car battery voltage detection unit; The input end of the car battery voltage detection unit is electrically connected to the emergency start output interface, the detection end VCAR of the main control unit is electrically connected to the detection output end of the car battery voltage detection unit, and the main control unit performs voltage detection on the external car battery connected to the emergency start output interface through the car battery voltage detection unit.

10. An intelligent 12V / 24V automatic identification and output method, characterized in that: The following steps are involved: Step 1: Loading the car battery voltage identification program module, 12V output parallel control program module, 24V output series control program module, voltage output setting program module, setting voltage and identification voltage comparison program module, and prohibiting / enabling voltage output program module into the program memory of the single-chip microcomputer U10, wherein the instructions of each program module are suitable for being loaded and executed by the main control processor of the single-chip microcomputer U10; The vehicle battery voltage identified by the vehicle battery voltage identification program module includes 12V voltage type and 24V voltage type, and the output voltage set by the voltage output setting program module includes 12V voltage output and 24V output voltage; Step 2: The user sets the output voltage to 12V or 24V to obtain the set output voltage. Step 3: Identify the voltage of the connected car battery using the car battery voltage identification program module to obtain an identified battery voltage; Step 4: Compare the set output voltage with the identification battery voltage through the set voltage and identification voltage comparison program module to obtain the identification result; Step 5: If the identification result obtained in step 4 is that the two are consistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output enabling state, and the process proceeds to step 6; if the identification result obtained in step 4 is that the two are inconsistent, the prohibition / enabling voltage output program module causes the emergency starting power supply to operate in the output prohibition state; Step six, when the battery voltage is identified as 12V, start the 12V output parallel control program module to make the first 12V battery unit and the second 12V battery unit output in parallel; when the battery voltage is identified as 24V, start the 24V output series control program module to make the first 12V battery unit and the second 12V battery unit output in series.

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