Anti-dropping intelligent detection emergency starting power supply

Abstract

The invention, which belongs to the conductive connection field, provides an anti-clip-off intelligent detection emergency starting power supply comprising a management control module and a battery pack module. The management control module is used for detecting parameter signals and controlling terminal voltage output of the battery pack module; the battery pack module is provided with an anode wiring terminal and a cathode wiring terminal which are respectively connected with an anode clamp and a cathode clamp which are used for clamping an external load, and the anode clamp comprises a first clamping part and a second clamping part; when the management control module detects that the first clamping part and the second clamping part are electrically separated in the terminal voltage output process, the output of the terminal voltage is stopped; wherein the terminal voltage is the voltage difference between the anode wiring terminal and the cathode wiring terminal. According to the invention, by detecting the clamping state of the positive electrode clamp, the system can respond to accidental clamp release in the terminal voltage output process in time, and the safety of the system is improved.

Description

Technical Field

[0001] The invention relates to the field of conductive connection, and in particular to an anti-dropping and intelligent detection emergency starting power supply. Background Art

[0002] The emergency starting power supply is mainly used to provide emergency power supply for timely ignition of the car when the car cannot be started normally due to battery failure. In the prior art, Chinese invention patent CN202011098911.4 discloses an emergency starting power supply, which includes a 12V / 24V dual battery module, an automatic series-parallel switch module, a sampling module, a system power conversion control module, etc., which can detect the performance and status of the car battery, and detect whether the positive and negative poles of the clips are connected correctly before starting the car.

[0003] However, the prior art is unable to detect and process the situation where the clamp of the emergency starting power supply is accidentally detached during use. Summary of the invention

[0004] In view of this, the technical solution provided by the present invention can detect the clamping state of the positive clamp and promptly cut off the power supply in the event of a detachment during the terminal voltage output process, thereby preventing accidents and ensuring the safety of users.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an anti-clamping intelligent detection emergency starting power supply, including a management control module and a battery pack module; the management control module is used to detect parameter signals and control the terminal voltage output of the battery pack module; the battery pack module is provided with an anode terminal and a cathode terminal, which are respectively connected to a positive clamp and a negative clamp for clamping an external load, and the positive clamp includes a first clamp part and a second clamp part. When the management control module detects that the first clamp part and the second clamp part are electrically separated during the terminal voltage output process, the output of the terminal voltage is stopped; wherein, the terminal voltage is the voltage difference between the anode terminal and the cathode terminal.

[0006] In particular, the management control module includes an MCU main control core and an external voltage detection unit, the external voltage detection unit is used to detect the terminal voltage and the voltage of the first clamp, and the MCU main control core is used to control the terminal voltage output of the battery pack module according to the detected parameter signal; wherein, the second clamp is electrically connected to the anode terminal; when the external voltage detection unit detects that the voltage of the first clamp changes from a high level to a low level, the MCU main control core determines that the first clamp and the second clamp are electrically separated, and controls the terminal voltage output of the battery pack module to be zero. When the terminal voltage detected by the external voltage detection unit is not within the preset voltage range, the MCU main control core determines that the external load is empty or erroneous, and controls the terminal voltage output of the battery pack module to be zero.

[0007] Specifically, the preset voltage range includes a first voltage range and a second voltage range; if the terminal voltage falls within the first voltage range, the MCU main control core determines that the external load is a first type of load, and controls the terminal voltage output of the battery pack module to match the first type of load; if the terminal voltage falls within the second voltage range, the MCU main control core determines that the external load is a second type of load, and controls the terminal voltage output of the battery pack module to match the second type of load.

[0008] Specifically, the first voltage range is higher than 0.2V and lower than or equal to 14.4V, the second voltage range is higher than 14.4V and lower than or equal to 28.8V, the first type of load is a rated 12V power supply, and the second type of load is a rated 24V power supply.

[0009] Furthermore, the parameter signal includes a temperature signal, a terminal voltage signal and a first clamp voltage signal.

[0010] Specifically, the external voltage detection unit is also used to detect whether the anode terminal and the cathode terminal are correctly connected to the external load. If the anode terminal and the cathode terminal are connected reversely, the MCU main control core starts a reverse connection alarm prompt; wherein, the reverse connection alarm prompt includes a sound prompt and a light prompt.

[0011] Furthermore, the battery pack module includes a battery pack and a relay group, and the management control module switches the internal connection mode of the battery pack by controlling the on and off of each contact of the relay group, so that the battery pack module outputs different terminal voltages.

[0012] Furthermore, the management control module also includes a relay detection unit for detecting the closing time of the relay contacts in the relay group.

[0013] Specifically, the management control module further includes a temperature management unit, which is used to detect the temperature of the battery pack and keep the temperature of the battery pack within a preset range.

[0014] The beneficial effects obtained by the present invention through the above technical solution are:

[0015] 1) The present invention detects the clamping state of the positive clamp, so that the system can respond promptly to the accidental unclamping during the terminal voltage output process, thereby improving the safety of the system.

[0016] 2) By setting a detection line on the first clamping part of the positive clamp, the clamping state detection of the clamp is converted into level voltage detection of the first clamping part, which not only has a simple structure but also has stable performance, thereby improving the intelligence of the system.

[0017] 3) The present invention adopts a high temperature resistant relay group to realize the switching operation of the battery pack connection mode, and detects the contact closure state inside the relay group, thereby avoiding the battery pack output jump caused by the excessive temperature of the internal module of the system, and enhancing the stability of the emergency starting power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic diagram of the system structure of an emergency starting power supply according to an embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the positive electrode clamp structure of an embodiment of the present invention.

[0020] Figure 3 It is a working flow chart of the emergency starting power supply according to an embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the reverse connection alarm circuit structure of an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of a terminal voltage detection circuit according to an embodiment of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the detachment detection circuit according to an embodiment of the present invention.

[0024] Figure 7 This is a pin connection diagram of the MCU main control core of an embodiment of the present invention.

[0025] The symbols in the figure represent:

[0026] 10. Clip shell; 11. First clip part; 12. Second clip part; 21. Detection line; 22. High current line. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the specific implementation of the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the embodiments described herein are only used to explain the present invention, but are not used to limit the scope of the present invention.

[0028] The embodiment of the present invention provides an anti-clip intelligent detection emergency starting power supply, please refer to the attached Figure 1 , Figure 1 is a schematic diagram of the system structure of the emergency starting power supply of the embodiment of the present invention. As can be seen from the figure, the emergency starting power supply of the embodiment of the present invention includes a management control module and a battery pack module.

[0029] The battery pack module is provided with an anode terminal and a cathode terminal, which are respectively connected to a positive clamp and a negative clamp for clamping an external load. In an embodiment of the present invention, the positive clamp includes a first clamp portion 11 and a second clamp portion 12, the first clamp portion 11 of the positive clamp is connected to a detection line 21, and the second clamp portion 12 of the positive clamp is connected to the anode terminal.

[0030] The management control module includes an MCU main control core and an external voltage detection unit. The external voltage detection unit is used to detect the terminal voltage of the vehicle battery and the voltage of the first clamp 11. The MCU main control core is used to control the terminal voltage output of the battery pack module according to the detected temperature signal, terminal voltage signal and the voltage signal of the first clamp 11.

[0031] When the first clamp 11 and the second clamp 12 are electrically connected, for example, the positive clamp is clamped on the positive terminal of the external load, the detection line 21 of the first clamp 11 and the anode terminal are at the same potential. When the first clamp 11 and the second clamp 12 are electrically separated, for example, loosened or physically separated, the detection line 21 of the first clamp 11 and the anode terminal are not at the same potential.

[0032] Please see attached Figure 2 , Figure 2It is a schematic diagram of the positive electrode clamp structure of an embodiment of the present invention. As can be seen from the figure, the positive electrode clamp includes a clamp shell 10, a first clamp part 11, a second clamp part 12, a detection line 21 and a high current line 22, wherein the first clamp part 11 is connected to the detection line 21, the second clamp part 12 is connected to the anode terminal through the high current line 22, and the detection line 21 is connected to the high current line 22. The clamp shell 10 is the supporting structure of the positive electrode clamp, which is made of non-conductive material, which is convenient for users to take and use. The first clamp part 11 and the second clamp part 12 are both made of conductive materials, and are respectively responsible for the conduction between the anode terminal and the external load. When the emergency starting power supply is in normal use, the first clamp 11 and the second clamp 12 clamp the positive terminal of the external load and output the terminal voltage to the external load; when the positive clamp is accidentally detached from the external load, the level of the first clamp 11 through the detection line 21 changes from high to low, and the MCU main control core recognizes this sudden change in level, then it is determined that the first clamp 11 and the second clamp 12 are electrically separated, and the terminal voltage output is controlled to zero.

[0033] In one embodiment of the present invention, when the management control module detects that the first clamp 11 and the second clamp 12 are electrically separated during the terminal voltage output process, the terminal voltage output of the battery module is stopped. The terminal voltage is the voltage difference between the anode terminal and the cathode terminal.

[0034] In one or other embodiments of the present invention, the detection line of the first clamping portion 11 is connected to the external voltage detection unit, so that the external voltage detection unit can detect the voltage of the first clamping portion 11 alone.

[0035] In an embodiment of the present invention, when the external voltage detection unit of the control management module detects that the voltage signal of the first clamping part 11 changes from a high level to a low level, the MCU main control core determines that the first clamping part 11 and the second clamping part 12 are electrically separated, and controls the terminal voltage output of the battery pack module to be zero. In this way, the accidental detachment of the positive clamp can be detected in time, and the output of the terminal voltage can be cut off in time to ensure the safety of the user.

[0036] Exemplarily, the MCU main control core of the embodiment of the present invention detects the terminal voltage of the car battery through the external voltage detection unit, and further determines the operating voltage corresponding to the detected car battery. If the terminal voltage falls within the first voltage range, the MCU main control core determines that the external load is a first type of load, and controls the terminal voltage output of the battery pack module to match the first type of load. If the terminal voltage falls within the second voltage range, the MCU main control core determines that the external load is a second type of load, and controls the terminal voltage output of the battery pack module to match the second type of load.

[0037] When the terminal voltage of the car battery detected by the external voltage detection unit is neither in the first voltage range nor in the second voltage range, the MCU main control core determines that the external load is empty or erroneous, and controls the terminal voltage output of the battery pack module to be zero. In an embodiment of the present invention, the first voltage range is higher than 0.2V and lower than or equal to 14.4V, and the first type of load is a battery with an operating voltage of 12V. The second voltage range is higher than 14.4V and lower than or equal to 28.8V, and the second type of load is a battery with an operating voltage of 24V. In other embodiments of the present invention, the first voltage range and the second voltage range can also be other values.

[0038] Exemplarily, the MCU main control core in the management control module also detects whether the anode terminal and the cathode terminal are correctly connected to the external load through the external voltage detection unit. If the anode terminal and the cathode terminal are connected reversely, the MCU main control core starts a reverse connection alarm prompt. Specifically, the reverse connection alarm prompt is a sound prompt. In other embodiments of the present invention, the reverse connection alarm prompt can also be a light prompt, or a combination of the two.

[0039] In an embodiment of the present invention, the battery pack module includes a battery pack and a relay group. The management control module switches the internal connection mode of the battery pack by controlling the on and off of each contact of the relay group, so that the battery pack module outputs different terminal voltages. In one embodiment of the present invention, when the relay group is controlled to connect the battery pack in parallel, the battery pack module will output a terminal voltage of 12V. When the relay group is controlled to connect the battery pack in series, the battery pack module will output a terminal voltage of 24V.

[0040] Exemplarily, the management control module also includes a relay detection unit and a temperature management unit. The relay detection unit is used to detect the closing time of the relay contacts in the relay group, which increases the contact detection inside the emergency starting power supply. The temperature management unit is used to detect the temperature of the battery pack and keep the temperature of the battery pack within a preset range. In an embodiment of the present invention, the preset temperature range of the battery pack is 0 degrees to 70 degrees. If the temperature of the battery pack is lower than the lower limit of the preset range, the heater is controlled to heat the battery pack. If the temperature of the battery pack exceeds the upper limit of the preset range, the terminal voltage output of the battery pack module is cut off.

[0041] Please see attached Figure 3 , Figure 3 : is a flowchart of the emergency starting power supply of an embodiment of the present invention. As can be seen from the figure, the specific workflow is as follows:

[0042] S1: Initialize the emergency starting power supply.

[0043] S2: The MCU main control core detects the temperature of the battery pack through the sensor.

[0044] In one or other embodiments of the present invention, if the battery pack temperature is detected to be lower than 0°C, an error message is displayed and the heater is controlled to heat the battery pack. When the battery pack temperature rises to 5°C or the heater continues to heat the battery pack for 10 minutes, the heating is stopped. If the battery pack temperature is detected to be higher than 70°C, an error message is displayed and the output of the terminal voltage is cut off, the system is in a waiting state, and the temperature is continuously detected. When the temperature is lower than 65 degrees, the system is restored to a normal state.

[0045] S3: Check whether the positive and negative clamps are connected incorrectly. If reverse connection is detected, that is, if the positive clamp is connected to the negative pole of the car battery and the negative clamp is connected to the positive pole of the car battery, a reverse connection alarm is issued and an error is prompted. After the user eliminates the reverse connection error, the process returns to step S2; otherwise, the process proceeds to the next step.

[0046] S4: The MCU main control core reads the terminal voltage of the external load through the external voltage detection unit.

[0047] S5: The MCU main control core determines the working voltage of the external load by reading the terminal voltage. Specifically, in an embodiment of the present invention, if the terminal voltage is higher than 28.8V or lower than 0.2V, that is, it exceeds the preset voltage range, the system prompts an error. This may be due to the lack of external load or other problems. After the user eliminates the error, return to step S2; if the read terminal voltage is higher than 0.2V and lower than or equal to 14.4V, the terminal voltage output of the battery pack module is controlled to be 12V; if the read terminal voltage is higher than 14.4V and lower than or equal to 28.8V, the terminal voltage output of the battery pack module is controlled to be 24V.

[0048] S6: Check whether the emergency starting power supply is braked, if yes, go to step S9; otherwise go to the next step.

[0049] S7: The MCU main control core detects whether the first clamping part 11 and the second clamping part 12 of the positive clamp are electrically separated. Specifically, in the embodiment of the present invention, if it is detected that the voltage of the first clamping part 11 of the positive clamp changes from a high level to a low level, it is determined that the first clamping part 11 and the second clamping part 12 of the positive clamp are electrically separated, and the process goes to step S9. If not, the process goes to the next step.

[0050] S8: The MCU main control core detects whether the terminal voltage output time meets the preset time. Specifically, in the embodiment of the present invention, if it is detected that the terminal voltage output time is greater than 180 seconds, then go to step S9; if it does not meet the preset time, then return to step S6.

[0051] S9: Cut off the terminal voltage output and end the work.

[0052] Embodiment 2

[0053] Based on the first embodiment of the present invention, the management control module of the second embodiment of the present invention further includes a relay detection unit, a temperature management unit, a battery pack balancing unit, an indicator light, and a display screen. The battery pack module also includes a charging module for charging the battery pack.

[0054] Please see attached Figure 1 ,exist Figure 1 The solid line in the middle represents the flow of current, and the dotted line represents the flow of command data. The current from the battery pack to the relay group and the control management module is the mainboard 3.3V power supply inside the emergency starting power supply, and the current pointing to the external load represents the terminal voltage output provided by the anode terminal and the cathode terminal to the car battery. The current from the charging module to the battery pack indicates that the emergency starting power supply obtains electricity from the outside through the charging module to replenish electricity, and the battery pack of the embodiment of the present invention is a rechargeable battery pack. The MCU main control core obtains the closing time of the relay contacts in the relay group through the relay detection unit, and sends the on-off control instructions of each contact of the relay group to the relay group. For example, when it is detected that the main circuit contact of the relay is closed for 0.55 seconds, the anode terminal and the cathode terminal of the battery pack are controlled to output current. This can make the output of the system more stable, avoid voltage jumps caused by sudden changes in the state of the contacts inside the relay, and enhance the robustness of the system.

[0055] The MCU main control core obtains the temperature of the battery pack through the temperature management unit and sends control instructions to maintain the battery pack temperature within the preset range. The MCU control unit obtains the voltage of each battery cell of the battery pack through the battery pack balancing unit and sends control instructions to balance the battery cells of the battery pack. The MCU main control core obtains the terminal voltage of the external load through the external voltage detection unit and determines the working voltage of the external load to control the voltage output of the battery pack to match the external load. The MCU main control core also controls the operation of the indicator light and display screen.

[0056] In an embodiment of the present invention, the battery pack includes a first battery pack and a second battery pack, and the series-parallel mode of the first battery pack and the second battery pack is switched by a relay group. The relay group has a total of four relays, and the four independent relays all have a secondary coil to detect the main contact, and return a signal to the MCU main control core through the secondary coil pin. There is a bidirectional diode in the secondary coil, and the two pins of the bidirectional diode are respectively connected to the MCU main control core and the ground terminal to prevent static electricity and convex pressure. In an embodiment of the present invention, the specific connection mode of the relay group and the battery pack is: one end of the main circuit of the first relay is connected to the positive pole of the first battery pack and the third relay, and the other end of the main circuit of the first relay is connected to the fourth relay and the positive pole of the second battery pack. One section of the main circuit of the second relay is connected to the negative pole of the first battery pack, and the other end is connected to the negative pole of the second battery pack. One end of the main circuit of the third relay is connected to the positive pole of the first battery pack, and the other end of the main circuit is connected to the negative pole of the second battery pack. One end of the main circuit of the fourth relay is connected to the positive pole of the first relay and the second battery pack, and the other end of the main circuit is connected to the anode terminal. The negative pole of the second battery pack is connected to the cathode terminal. When the first relay, the second relay, and the fourth relay are all closed, the terminal voltage of the battery pack outputs 12V. When only the third and fourth relays are closed, the terminal voltage of the main battery pack outputs 24 V. The anode terminal and cathode terminal are respectively connected to the positive clamp and negative clamp of the car battery. When the fourth relay is connected to the main circuit through the main contact for 0.55 seconds, the battery pack starts to output voltage and current to the car battery.

[0057] In the embodiment of the present invention, compared with the field effect tube architecture used in the traditional main circuit, the relay group of the present invention uses a relay that can withstand larger currents and higher temperatures to control the main circuit. Compared with the temperature resistance of high-power field effect tubes (usually 150 degrees Celsius), the temperature resistance of the relay can reach 300 degrees Celsius, so it has better thermal stability and can work more stably in the high temperature environment during the actual startup operation. The multiple reeds of the relay enable the module to achieve better results in instantaneous current shunting integration and heat dissipation. And it has internal detection capabilities, so that the system can detect the internal contact state of the relay, ensuring the stability and safety of the system operation. When controlling the relay, it only needs to energize the auxiliary contacts of the relay, and the auxiliary contacts will be self-retained by the magnet in less than one second, without the need to continuously power the coil, reducing the energy consumption of the circuit (the conduction and disconnection of the relay are both self-retained by independent magnets).

[0058] Please see attached Figure 4 , Figure 4It is a schematic diagram of the reverse connection alarm circuit structure of an embodiment of the present invention. It can be seen from the figure that port PO3 is connected to the MCU main control core. When port PO1 is connected to the positive terminal of the external load, and port PO2 is connected to the negative terminal of the external load, the voltage of port PO1 is higher than the voltage of port PO2, the optocoupler circuit is in a disconnected state, and the reverse connection alarm is not triggered. When port PO1 is connected to the negative terminal of the external load, and port PO2 is connected to the positive terminal of the external load, this is a reverse connection state, and the voltage of port PO1 is lower than the voltage of port PO2, then the light-emitting diode U2 in the optocoupler circuit is turned on and lit, and the phototransistor P1 of the optocoupler circuit is turned on after receiving the light signal, and port PO3 outputs a signal to the MCU main control core. After the MCU main control core recognizes the signal, it controls the reverse connection alarm signal light to light up, or warns through sound, or a combination of the two. In the embodiment of the present invention, the optocoupler adopts EL357N.

[0059] The emergency starting power supply of the embodiment of the present invention has a high-precision voltage detection capability, can detect the terminal voltage of the car battery before starting, and automatically switch to the 12V gear or 24V gear through the detection data to output the correct matching voltage. The emergency starting power supply provided by the embodiment of the present invention can detect the external load voltage of a minimum of 0.2V, and the voltage resolution reaches 0.2V. Therefore, even if the voltage of the car battery of the external load is very low, the emergency starting power supply of the embodiment of the present invention can detect the voltage value and start the car. When the voltage is not detected or the preset range of the voltage is not reached, the terminal voltage circuit of the emergency starting power supply will remain in an open circuit state. Therefore, the emergency starting power supply of the embodiment of the present invention has the functions of short-circuit protection and reverse connection prevention. In particular, during use, not only does the user not need to judge the car battery, but also does not need to manually switch the switch, so it can avoid system failures and safety risks caused by connecting the wrong gear and connecting the wrong negative pole during use.

[0060] In the embodiment of the present invention, the emergency starting power supply adopts an attached Figure 5 The terminal voltage detection circuit shown improves the detection accuracy of the terminal voltage, so that the emergency starting power supply of the embodiment of the present invention can detect floating changes of voltage as low as 0.2V.

[0061] Please see attached Figure 5 , Figure 5It is a schematic diagram of the terminal voltage detection circuit structure of an embodiment of the present invention. As shown in the figure, port PO7 is connected to the positive terminal of the car battery, port PO8 is connected to the negative terminal of the car battery, and port PO9 is connected to the MCU main control core. Resistors R4 and R5 divide the collected terminal voltage of the car battery. Capacitor C1 performs hardware filtering on the signal after the voltage division of resistors R4 and R5, the third pin 3 of transistor D1 is connected to the mainboard 3.3V power supply, and the first pin 1 of transistor D1 is connected to port PO8. In an embodiment of the present invention, the negative terminal of the car battery is the ground terminal. The second pin 2 of transistor D1 is connected to resistor R204. When the emergency starting power supply of the embodiment of the present invention is connected to the car battery, the signal after the voltage division and filtering of resistors R4 and R5 is transmitted to the 20th pin of the MCU main control core through resistor R204. In one or other embodiments of the present invention, the resistance value of resistor R4 is 27KΩ, the resistance value of resistor R5 is 3.3KΩ, the specification of capacitor C1 is 104P, 50V, the model of transistor D1 is BAV99, the chip model of MCU main control core is U8 STM32G070RBT6, and the specification of the chip is 12BIT-ADC. Transistor D1 mainly plays a protective role, anti-static and anti-interference protection, so that the MCU main control core is protected from damage. In an embodiment of the present invention, the 20th pin of the MCU main control core is collected once every 100mS, and the collected values ​​are calibrated for zero error. Take 6 average values ​​for filtering, and the collected voltage divider value is back-calculated as the terminal voltage value of the car battery. After collecting and calculating the terminal voltage of the car battery, if the terminal voltage of the car battery is higher than 0.2V and lower than or equal to 14.4V, the MCU main control core determines that the car battery is a 12V series battery, and the emergency starting power supply output is also adjusted to 12V output accordingly; if the terminal voltage of the car battery is higher than 14.4V and lower than or equal to 28.8V, the MCU main control core determines that the car battery is a 24V series battery, and the emergency starting power supply output is also adjusted to 24V output accordingly; if the terminal voltage of the car battery is greater than 28.8V, the emergency starting power supply is not output.

[0062] Embodiment 3

[0063] On the basis of the first and second embodiments, the emergency starting power supply of the embodiment of the present invention also has temperature compensation and protection functions. Specifically, in a low temperature environment, the emergency starting power supply of the embodiment of the present invention captures the temperature of the battery pack node. If the battery pack node temperature is lower than 0°C, the battery pack will be temperature compensated so that the battery pack can work under suitable environmental conditions. When the temperature exceeds 70°C, the output of the emergency starting power supply system will also be cut off so that the battery pack can cool down naturally. When the battery pack temperature drops to 60°C or below, the MCU main control core will start the emergency starting power supply again so that it can output normally to protect the safety of the battery and circuit.

[0064] In one or other embodiments of the present invention, the emergency starting power supply also has the function of monitoring the temperature of the MOS tube. When the temperature of the MOS tube is higher than or equal to 100°C, the output of the emergency starting power supply is not allowed. When the MOS tube naturally cools down to a temperature lower than or equal to 80°C, the output of the emergency starting power supply is allowed. The temperatures of the battery pack and the MOS tube are calculated by the MCU main control core, and a certain temperature range is actively maintained, so that overheating or underheating will not occur.

[0065] Embodiment 4

[0066] In the traditional lithium battery combination solution, for the ternary lithium battery pack, seven cells are usually connected in series to meet the 24V startup scenario. However, when switching to the 12V working mode, only four cells are connected to the circuit, and the remaining three cells will be in a non-working state. This architecture will cause a voltage difference between the non-working cells and the working cells after the 12V discharge is completed. If this situation persists, the difference in frequency of use will cause uneven aging of the cells, which will not only reduce the overall performance and health of the battery pack, but may also pose a threat to the safety and stability of the circuit.

[0067] The embodiment of the present invention adds a battery pack balancing function on the basis of the first to third embodiments. Specifically, the embodiment of the present invention adopts a method of automatically switching series and parallel connection of 6 cells (even number of cells), 6 cells in series in the 24V gear, and 2 and 3 series (3 cells in series, two groups of 3 series cells in parallel) in the 12V gear. Through this design, the battery pack is always in a state of simultaneous operation when in use, ensuring that each cell is discharged synchronously, avoiding the situation where some cells are discharged while others are not discharged, thereby ensuring voltage balance. After the discharge is completed, the embodiment of the present invention balances the voltage of each cell through the built-in battery pack balancing unit. Although each cell works simultaneously during the discharge process, due to individual differences, there may still be slight differences in the voltage of each cell after the discharge is completed. The battery pack balancing unit can detect and adjust the voltage of each cell to restore it to a consistent level, thereby extending the service life of the battery pack and improving stability.

[0068] Embodiment 5

[0069] On the basis of the above embodiments, the emergency starting power supply of the embodiment of the present invention has anti-reverse charging protection. If the MCU main control core detects that the emergency starting power supply has no operation for 180 seconds after the output terminal voltage, the MCU main control core controls the relay group to disconnect the circuit to prevent the emergency starting power supply from being reversely charged by the car battery. It can not only prevent battery safety problems caused by failure to disconnect in time, but also protect the health of the battery pack and the safety of system operation.

[0070] Embodiment 6

[0071] Please see attached Figure 6 and attached Figure 7 , Figure 6 is a schematic diagram of a detachment detection circuit according to an embodiment of the present invention, Figure 7 : This is a pin connection diagram of the MCU main control core of an embodiment of the present invention. The emergency starting power supply of the embodiment of the present invention has a detection line built into the positive clamp, which is connected to the first clamp 11 of the positive clamp, and the second clamp 12 of the positive clamp is connected to the anode terminal. Among them, there is no conduction when the first clamp 11 and the second clamp 12 are separated. In the figure, port PO4 is connected to the detection line, port PO5 is connected to the negative terminal of the car battery, and port PO6 is connected to the 18th pin of the MCU main control core. In an embodiment of the present invention, the negative terminal of the car battery is the ground terminal. The level signal of the detection line controls the conduction and cutoff of transistors Q2 and Q1 after voltage division through resistor R6, diode D2, resistor R7 and resistor R8, and capacitor C3 is used as a filter element. When the emergency starting power supply is output, if there is voltage at port PO4 connected to the detection line, transistors Q2 and Q1 are turned on. After transistors Q2 and Q1 are turned on, the collector of transistor Q1 has 3.3V output to port PO6. If the 18th pin detection port PO6 of the MCU main control core is at a high level, it is judged that the first clamp 11 and the second clamp 12 of the positive clamp are electrically connected, and the positive clamp is in a clamping state. If the positive clamp is detached from the car battery during the emergency start-up process, the detection line loses power, the voltage of port PO4 decreases, and the transistor Q4 and transistor Q1 are disconnected. At this time, the collector of the transistor Q1 has no 3.3V output, and the voltage of port PO6 is pulled down by the resistor R1. At this time, the MCU main control core determines that the first clamp 11 and the second clamp 12 of the positive clamp are electrically separated, that is, the positive clamp is in a loose state, and the MCU main control core controls the relay group to stop the terminal voltage output of the battery pack. In one or other embodiments of the present invention, the model of the transistor Q1 is DAT114EKA, the model of the transistor Q2 is SST2222, the specification of the capacitor C3 is 104P, 50V, and the specification of the capacitor C2 is 102P, 50V.

[0072] Finally, it should be noted that the above specific implementation method is only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An anti-dropping intelligent detection emergency starting power supply, characterized in that: Including management control module and battery pack module; The management control module is used to detect parameter signals and control the terminal voltage output of the battery module; The battery pack module is provided with an anode terminal and a cathode terminal, which are respectively connected to a positive clamp and a negative clamp for clamping an external load, wherein the positive clamp comprises a first clamp and a second clamp, and when the management control module detects that the first clamp and the second clamp are electrically separated during the process of outputting the terminal voltage, the output of the terminal voltage is stopped; The terminal voltage is the voltage difference between the anode terminal and the cathode terminal.

2. The emergency starting power supply according to claim 1, characterized in that: The management control module includes an MCU main control core and an external voltage detection unit, wherein the external voltage detection unit is used to detect the terminal voltage and the voltage of the first clamping part, and the MCU main control core is used to control the terminal voltage output of the battery pack module according to the detected parameter signal; Among them, the second clamp is electrically connected to the anode terminal; when the external voltage detection unit detects that the voltage of the first clamp changes from a high level to a low level, the MCU main control core determines that the first clamp and the second clamp are electrically separated, and controls the terminal voltage output of the battery pack module to be zero; when the terminal voltage detected by the external voltage detection unit is not within the preset voltage range, the MCU main control core determines that the external load is empty or wrong, and controls the terminal voltage output of the battery pack module to be zero.

3. The emergency starting power supply according to claim 2, characterized in that: The preset voltage range includes a first voltage range and a second voltage range; if the terminal voltage falls within the first voltage range, the MCU main control core determines that the external load is a first type of load, and controls the terminal voltage output of the battery pack module to match the first type of load; if the terminal voltage falls within the second voltage range, the MCU main control core determines that the external load is a second type of load, and controls the terminal voltage output of the battery pack module to match the second type of load.

4. The emergency starting power supply according to claim 3, characterized in that: The first voltage range is higher than 0.2V and lower than or equal to 14.4V, the second voltage range is higher than 14.4V and lower than or equal to 28.8V, the first type of load is a rated 12V power supply, and the second type of load is a rated 24V power supply.

5. The emergency starting power supply according to claim 1, characterized in that: The parameter signals include a temperature signal, a terminal voltage signal and a first clamp voltage signal.

6. The emergency starting power supply according to claim 2, characterized in that: The external voltage detection unit is also used to detect whether the anode terminal and the cathode terminal are correctly connected to the external load. If the anode terminal and the cathode terminal are connected reversely, the MCU main control core starts a reverse connection alarm prompt; The reverse connection alarm prompt includes a sound prompt and a light prompt.

7. The emergency starting power supply according to claim 1, characterized in that: The battery pack module includes a battery pack and a relay group. The management control module switches the internal connection mode of the battery pack by controlling the on and off of each node of the relay group, so that the battery pack module outputs different terminal voltages.

8. The emergency starting power supply according to claim 7, characterized in that: The management control module further comprises a relay detection unit for detecting the closing time of the relay contacts in the relay group.

9. The emergency starting power supply according to claim 1, characterized in that: The management control module further includes a temperature management unit, which is used to detect the temperature of the battery pack and keep the temperature of the battery pack within a preset range.

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