Multiple protection diesel engine starting power supply and protection method

Abstract

The present invention provides a multi-protection diesel engine starting power supply and protection method, including a shell, a lithium battery, a circuit board, a starter power terminal, a starting terminal, a display and a control panel, wherein a lithium battery is arranged in the shell, a circuit board is arranged on one side of the lithium battery, a starter power terminal is arranged on one side of the shell, and the starter power terminal is used to connect the positive and negative poles of the starter; a starting terminal for connecting the starter is arranged on one side of the starter power terminal, and a display and a control panel is arranged on the outer wall of the shell. The beneficial effects of the present invention are: it has the characteristics of lithium batteries such as lightness, convenience in storage, and convenience in maintenance, and it also provides all-round protection for lithium batteries. Its main protection functions include: discharge overcurrent protection, over-temperature protection, undervoltage protection, frequent starting protection, long-time starting protection, etc. Compared with the existing lithium battery starting power supplies on the market, this product has a long service life, comprehensive protection, and is stable and reliable.

Description

[Technical field]

[0001] The invention relates to a diesel engine starting power supply, in particular to a multiple protection diesel engine starting power supply and a protection method. [Background technology]

[0002] Currently, the diesel engine starting power supply on the market is mainly lead-acid lithium battery, but due to the shortcomings of lead-acid lithium battery such as large size, heavy weight, short life, and poor storage resistance, it is inconvenient for consumers to use and the cost of use is high. In this context, new lithium battery starting power supplies began to appear on the market. Although this type of starting power supply solves the above shortcomings of lead-acid lithium batteries, the starting current can instantly reach hundreds of amperes or even thousands of amperes when the diesel engine is started under fault, cold or other harsh conditions, and it is very difficult to protect the current of hundreds of amperes or thousands of amperes from the perspective of technology and cost. In addition, some improper usage habits, such as frequent starting and long-term starting, etc., often cause the starting power supply to bulge, leak, burn out or even burn.

[0003] At present, the positive and negative electrodes of the lithium battery of the diesel engine starting power supply are directly connected to the positive and negative electrodes of the starter, and then a mechanical start button is connected from the positive electrode of the starter to the start terminal of the starter, allowing multiple starts in a short time and a long start at one time; the wiring is complicated and the discharge overcurrent protection cannot be achieved, resulting in the burning of the lithium battery ears and the scrapping of the lithium battery; the overheating protection cannot be achieved, resulting in the lithium battery swelling and bulging, which seriously shortens the life of the lithium battery; multiple starts in a short time or a long start at one time will cause the lithium battery to heat up seriously, which can easily cause the lithium battery to bulge, leak or even burn, seriously affecting the service life of the lithium battery and posing certain safety hazards to users. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems that the positive and negative electrodes of the lithium battery of the current diesel engine starting power supply are directly connected to the positive and negative electrodes of the starter, and then a mechanical starting button is connected from the positive electrode of the starter to the starting terminal of the starter, allowing multiple starts in a short time and a long start once; the wiring is complicated and the discharge overcurrent protection cannot be realized, resulting in the burning of the lithium battery pole ear and the scrapping of the lithium battery; the overheating protection cannot be realized, resulting in the expansion and bulging of the lithium battery, which seriously shortens the life of the lithium battery; multiple starts in a short time or a long start once will cause the lithium battery to heat up seriously, which is very likely to cause the lithium battery to bulge, leak or even burn, seriously affecting the service life of the lithium battery, and also bringing certain safety hazards to the user, and thus a multi-protection diesel engine starting power supply and protection method are provided.

[0005] The present invention is realized by the following technical scheme: a multi-protection diesel engine starting power supply, comprising a housing, a lithium battery, a circuit board, a starter power terminal, a starter terminal, a display and a control panel, wherein a lithium battery is arranged in the housing, a circuit board is arranged on one side of the lithium battery, a starter power terminal is arranged on one side of the housing, and the starter power terminal is used to connect the positive and negative electrodes of the starter; a starter terminal for connecting the starter is arranged on one side of the starter power terminal, and a display and a control panel is arranged on the outer side wall of the housing;

[0006] The circuit board includes an MCU, a start switch, and a relay. A temperature probe is also attached to the surface of the lithium battery. The MCU is connected to the start switch and the relay. One end of the output end of the relay is connected to the positive electrode of the lithium battery, and the other end of the relay output is connected to the start terminal. The temperature probe is connected to the MCU signal, and the starter power terminal is connected to the positive and negative electrodes of the lithium battery.

[0007] Furthermore, the circuit board also includes a power button, a battery light, a DC charging socket, a start indicator light, and a buzzer. A power button is provided on one side of the circuit board, a battery light is provided on one side of the power button, a DC charging socket is provided on one side of the battery light, a start indicator light is provided on one side of the relay, and the buzzer is located on one side of the start indicator light. The buzzer is connected to the MCU signal, and the battery light and start indicator light are connected to the MCU signal.

[0008] Furthermore, the multi-protection diesel engine starting power supply also includes an LED lamp, which is located on one side of the starting terminal and is electrically connected to the circuit board.

[0009] Furthermore, a shock-proof rubber pad is attached to the outer surface of the shell.

[0010] Furthermore, the shell consists of an upper shell and a lower shell.

[0011] Furthermore, a waterproof sealing ring is provided on the lower shell frame.

[0012] Furthermore, the start terminal is a 3.5mm single PIN terminal.

[0013] Furthermore, the starter power terminal is an EC8 starter power terminal.

[0014] Furthermore, a terminal silicone plug is sleeved on the starter power terminal.

[0015] A protection method for a multi-protection diesel engine starting power supply comprises the following steps:

[0016] (1) When the start switch is pressed, the MCU determines whether the lithium battery meets the start-up conditions based on the current lithium battery status. The judgment method is: the MCU detects the current temperature and voltage value of the lithium battery to see whether the lithium battery is under-voltage or over-temperature;

[0017] (2) If the starting conditions are met, the lithium battery is not under-voltage and over-temperature; the MCU sends a signal to cause the relay to attract the positive electrode of the lithium battery and connect it to the starter terminal of the starter, and the internal circuit of the starter starts to work. At this time, the lithium battery provides current to the starter through the starter power supply terminals connected to the positive and negative electrodes of the starter, and the starter starts to drive the diesel engine to rotate;

[0018] (3) The starting process begins. When the start button is released after the diesel engine starts, the MCU sends a signal to disconnect the relay and the starting process ends. At the same time, during the starting process, the MCU monitors the voltage, current, temperature and other parameters of the lithium battery in real time. If overcurrent, undervoltage, overtemperature or other conditions occur, the MCU quickly sends a signal to disconnect the relay, terminate the start, and light up the start indicator light. The buzzer sounds to remind the user to start the power supply to enter the protection state. The start can only be started again after the start indicator light goes out. In addition, if the user keeps pressing the start button, the MCU will automatically disconnect the relay after 3 seconds to terminate the starting process.

[0019] The beneficial effects of the present invention are:

[0020] (1) The multi-protection diesel engine starting power supply has a built-in start button, which is easy to use;

[0021] (2) The startup process monitors the status of the lithium battery in real time, effectively avoiding damage to the lithium battery and eliminating potential safety hazards;

[0022] (3) The instantaneous voltage drop of the lithium battery during the startup process is used in combination with information such as the internal resistance of the lithium battery, the discharge rate of the lithium battery, and the current temperature of the lithium battery to estimate whether the output current of the lithium battery exceeds the limit, thus solving the problem of high cost and difficulty in implementing direct sampling of large currents in the industry;

[0023] (4) The relay inside the circuit controls the signal of the starter terminal rather than the high current on the power terminal. Compared with the traditional direct high current protection, this design has the advantages of simple circuit, small size, low cost and high reliability. It is the first application in similar products and has groundbreaking significance.

[0024] (5) Comprehensive protection for lithium batteries; Undervoltage protection function: When the lithium battery is exhausted (the last power indicator light flashes and the buzzer starts to sound), if the start button is pressed at this time, the start power supply will not work; Overcurrent protection function: If the lithium battery discharge current is detected to be too large during the startup process, the start power supply will terminate the current startup process, the buzzer will start to sound, and the start indicator light will go out after 90 seconds before it can be restarted; Overtemperature protection function: When the lithium battery temperature rises to more than 65℃, if the start button is pressed at this time, the start power supply will not work, and it can only be restarted when the temperature drops below 45℃. In addition, if the temperature is detected to be too high during the startup process, the startup process will be terminated immediately; Frequent startup protection function: Each startup must be separated by more than 90 seconds. If the interval time is less than 90 seconds, the start power supply will not work; Long startup protection: Each startup process cannot exceed 3 seconds. If it exceeds 3 seconds, the start power supply will forcibly terminate the startup process after 3 seconds.

Brief Description of the Drawings

[0025] Figure 1 This is a schematic diagram of the structure of the multi-protection diesel engine starting power supply of the present invention;

[0026] Figure 2 This is a schematic diagram of the explosion structure of the multi-protection diesel engine starting power supply of the present invention;

[0027] Figure 3 This is a schematic diagram of the principle of the multi-protection diesel engine starting power supply of the present invention;

[0028] Figure numerals: 1. Shell; 11. Upper shell; 12. Lower shell; 2. Lithium battery; 21. Temperature probe; 3. Circuit board; 31. MCU; 32. Start switch; 33. Relay; 34. Power button; 35. Battery light; 36. DC charging stand; 37. Start indicator light; 38. Buzzer; 4. Starter power terminal; 41. Terminal silicone plug; 5. Start terminal; 6. Display and control panel; 7. LED light. [Specific implementation method]

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] like Figure 1 , Figure 2 , Figure 3As shown, a multi-protection diesel engine starting power supply includes a housing 1, a lithium battery 2, a circuit board 3, a starter power terminal 4, a starter terminal 5, and a display and control panel 6. The housing 1 is provided with a lithium battery 2, a circuit board 3 is provided on one side of the lithium battery 2, a starter power terminal 4 is provided on one side of the housing 1, and the starter power terminal 4 is used to connect the positive and negative poles of the starter; a starter terminal 5 for connecting the starter is provided on one side of the starter power terminal 4, and a display and control panel 6 is provided on the outer wall of the housing 1;

[0031] The circuit board 3 includes an MCU31, a start switch 32, and a relay 33. A temperature probe 21 is also attached to the surface of the lithium battery 2. The MCU31 is connected to the start switch 32 and the relay 33. One end of the output end of the relay 33 is connected to the positive electrode of the lithium battery 2, and the other end of the output end of the relay 33 is connected to the start terminal 5. The temperature probe 21 is signal-connected to the MCU31, and the starter power supply terminal 4 is connected to the positive and negative electrodes of the lithium battery 2.

[0032] Preferably, the circuit board 3 also includes a power button 34, a battery light 35, a DC charging socket 36, a start indicator light 37, and a buzzer 38. A power button 34 is provided on one side of the circuit board 3, a battery light 35 is provided on one side of the power button 34, a DC charging socket 36 is provided on one side of the battery light 35, a start indicator light 37 is provided on one side of the relay 33, and the buzzer 38 is located on one side of the start indicator light 37. The buzzer 38 is connected to the MCU31 signal, and the battery light 35 and the start indicator light 37 are connected to the MCU31 signal.

[0033] Preferably, the multi-protection diesel engine starting power supply further includes an LED lamp 7 , which is located at one side of the starting terminal 5 , and is electrically connected to the circuit board 3 .

[0034] Preferably, a shock-proof rubber pad is attached to the outer surface of the shell 1.

[0035] Preferably, the housing 1 consists of an upper shell 11 and a lower shell 12 .

[0036] Preferably, a waterproof sealing ring is provided on the frame of the lower shell 12.

[0037] Preferably, the starting terminal 5 is a 3.5 mm single PIN terminal.

[0038] Preferably, the starter power terminal 4 is an EC8 starter power terminal.

[0039] Preferably, a terminal silicone plug 41 is sleeved on the starter power terminal 4 .

[0040] A protection method for a multi-protection diesel engine starting power supply comprises the following steps:

[0041] (1) When the start switch 32 is pressed, the MCU 31 determines whether the lithium battery 2 meets the start condition according to the current state of the lithium battery 2; the determination method is: the MCU 31 detects the current temperature and voltage value of the lithium battery 2 to see whether the lithium battery 2 is under-voltage or over-temperature;

[0042] (2) If the starting conditions are met, the lithium battery 2 is not under-voltage and over-temperature; then the MCU 31 sends a signal to cause the relay 33 to attract the positive electrode of the lithium battery 2 and connect it to the starter terminal 5, and the internal circuit of the starter starts to work. At this time, the lithium battery 2 provides current to the starter through the starter power supply terminal 4 connected to the positive and negative electrodes of the starter, and the starter starts to drive the diesel engine to rotate;

[0043] (3) The starting process begins. When the start button is released after the diesel engine starts, MCU31 sends a signal to disconnect the relay 33, and the starting process ends. At the same time, during the starting process, MCU31 monitors the voltage, current, temperature and other parameters of the lithium battery 2 in real time. If overcurrent, undervoltage, overtemperature and other conditions occur, MCU31 quickly sends a signal to disconnect the relay 33, terminate the current start, and light up the start indicator light 37 and the buzzer 38 to prompt the user to start the power supply to enter the protection state. The start can only be started again after the start indicator light 37 goes out. In addition, if the user keeps pressing the start switch 32 without releasing it, MCU31 will automatically disconnect the relay 33 after 3 seconds to terminate the current start process.

[0044] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A multi-protection diesel engine starting power supply, characterized in that: It includes a housing, a lithium battery, a circuit board, a starter power terminal, a starter terminal, a display and a control panel, wherein the housing is provided with a lithium battery, a circuit board is provided on one side of the lithium battery, a starter power terminal is provided on one side of the housing, and the starter power terminal is used to connect the positive and negative electrodes of the starter; a starter terminal for connecting the starter is provided on one side of the starter power terminal, and a display and a control panel is provided on the outer side wall of the housing; The circuit board includes an MCU, a start switch, and a relay. A temperature probe is also attached to the surface of the lithium battery. The MCU is connected to the start switch and the relay. One end of the output end of the relay is connected to the positive electrode of the lithium battery, and the other end of the output end of the relay is connected to the start terminal. The temperature probe is connected to the MCU signal, and the starter power supply terminal is connected to the positive and negative electrodes of the lithium battery. The circuit board also includes a power button, a battery indicator, a DC charging cradle, a start indicator light, and a buzzer. A power button is provided on one side of the circuit board, a battery indicator light is provided on one side of the power button, a DC charging cradle is provided on one side of the battery indicator light, a start indicator light is provided on one side of the relay, and the buzzer is located on one side of the start indicator light. The buzzer is connected to the MCU signal, and the battery indicator light and the start indicator light are connected to the MCU signal. A protection method for a multi-protection diesel engine starting power supply, characterized in that it comprises the following steps: (1) When the start switch is pressed, the MCU determines whether the lithium battery meets the start-up conditions based on the current lithium battery status. The judgment method is: the MCU detects the current temperature and voltage value of the lithium battery to see whether the lithium battery is under-voltage or over-temperature; (2) If the starting conditions are met, the lithium battery is not under-voltage and over-temperature; the MCU sends a signal to cause the relay to attract the positive electrode of the lithium battery and connect it to the starter terminal of the starter, and the internal circuit of the starter starts to work. At this time, the lithium battery provides current to the starter through the starter power supply terminals connected to the positive and negative electrodes of the starter, and the starter starts to drive the diesel engine to rotate; (3) The starting process begins. When the start button is released after the diesel engine starts, the MCU sends a signal to disconnect the relay and the starting process ends. At the same time, during the starting process, the MCU monitors the voltage, current and temperature parameters of the lithium battery in real time. If overcurrent, undervoltage or overtemperature occurs, the MCU quickly sends a signal to disconnect the relay, terminate the start, and light up the start indicator light. The buzzer sounds to remind the user to start the power supply to enter the protection state. The start can only be started again after the start indicator light goes out. In addition, if the user keeps pressing the start button without releasing it, the MCU will automatically disconnect the relay after 3 seconds to terminate the starting process.

2. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: The multi-protection diesel engine starting power supply also includes an LED lamp, which is located on one side of the starting terminal and is electrically connected to the circuit board.

3. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: The outer surface of the shell is attached with a shockproof rubber pad.

4. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: The shell body is composed of an upper shell and a lower shell.

5. The multi-protection diesel engine starting power supply according to claim 4, characterized in that: A waterproof sealing ring is arranged on the lower shell frame.

6. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: The start terminal is a 3.5mm single PIN terminal.

7. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: The starter power terminal is an EC8 starter power terminal.

8. The multi-protection diesel engine starting power supply according to claim 1, characterized in that: A terminal silicone plug is sleeved on the starter power terminal.

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