WO2022095059A1 - Système de charge à combustion interne - Google Patents

Système de charge à combustion interne Download PDF

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Publication number
WO2022095059A1
WO2022095059A1 PCT/CN2020/127621 CN2020127621W WO2022095059A1 WO 2022095059 A1 WO2022095059 A1 WO 2022095059A1 CN 2020127621 W CN2020127621 W CN 2020127621W WO 2022095059 A1 WO2022095059 A1 WO 2022095059A1
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WO
WIPO (PCT)
Prior art keywords
internal combustion
charging system
module
power
charging
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PCT/CN2020/127621
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English (en)
Chinese (zh)
Inventor
林宋荣
金军骞
李鹏
Original Assignee
深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2020/127621 priority Critical patent/WO2022095059A1/fr
Publication of WO2022095059A1 publication Critical patent/WO2022095059A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor

Definitions

  • the present disclosure relates to the technical field of power supply, and in particular, to an internal combustion charging system.
  • drones for plant protection operations As the application of drones in agriculture becomes more and more mature, more and more farms, forest farms or ranches have begun to use drones for plant protection operations.
  • drones for plant protection operations due to the large operating area and the limited endurance of the drones, the drones need to be charged multiple times to complete the plant protection operations. Due to the remoteness of some plant protection operation areas, it is difficult to find mains electricity. It is necessary to use an internal combustion generator to generate electricity, supply power to the charger, and then use the charger to charge the battery of the drone.
  • the present disclosure provides an internal combustion charging system.
  • an internal combustion charging system for charging a battery.
  • the internal combustion charging system includes: an internal combustion generator used to provide electricity for charging the battery, the internal combustion generator includes a start-stop device, the start-stop device is used to control the start and stop of the internal combustion generator, and the start-stop device includes a start switch.
  • the rectifier is used for converting the power output from the internal combustion generator into the first direct current.
  • the power module is used to step down the first direct current output by the rectifier into the second direct current.
  • the external module is used for connecting with the battery.
  • the start switch is used to connect the circuit so that the battery can supply power to the start-stop device to start the internal combustion generator; and the second direct current output from the power module charges the battery through the external module.
  • the rectifier, the power supply module and the external module are modularly installed in the internal combustion generator, and the power output from the internal combustion generator is rectified into the first direct current by the rectifier, which is conducive to voltage regulation. Then, the first direct current is stepped down to the second direct current through the power module, which can directly charge the battery of the drone and other equipment. In this way, the battery can be charged without carrying the charger, and the charger does not need to be transported, which can reduce the labor intensity of plant protection operations. Further, by connecting the external module to the start switch, the remaining power of the battery to be charged can be used to provide starting power for the internal combustion generator, and the internal combustion generator does not need a built-in mobile power supply. Compared with the traditional technology, the weight can be reduced and it is easy to carry.
  • FIG. 1 is a structural block diagram of an internal combustion charging system shown in some implementations of the application.
  • FIG. 2 is a schematic diagram of a power supply state of the internal combustion charging system shown in FIG. 1 .
  • FIG. 3 is a schematic diagram of a charging state of the internal combustion charging system shown in FIG. 1 .
  • FIG. 4 is a structural block diagram of the internal combustion generator shown in some implementations of the application.
  • FIG. 5 is another structural block diagram of the internal combustion charging system in some embodiments of the present application.
  • FIG. 6 is still another structural block diagram of the internal combustion charging system in some embodiments of the present application.
  • FIG. 7 is a structural block diagram of charging control of the internal combustion charging system shown in FIG. 6 .
  • FIG. 8 is another structural block diagram of the charging control of the internal combustion charging system in some embodiments of the present application.
  • FIG. 9 is a structural block diagram of a power module in some embodiments of the present application.
  • FIG. 10 is still another structural block diagram of the charging control of the internal combustion charging system in some embodiments of the present application.
  • first, second, third, etc. may be used in this disclosure to describe various pieces of information, such information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information, without departing from the scope of the present disclosure.
  • word "if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • the internal combustion charging system is used to charge the battery 500 .
  • the internal combustion charging system includes an internal combustion generator 100 , a rectifier 200 , a power module 300 and an external Module 400.
  • the internal combustion generator 100 is used to provide electricity for charging the battery 500
  • the internal combustion generator 100 includes a start-stop device 110
  • the start-stop device 110 is used to control the start and stop of the internal combustion generator 100
  • the start-stop device 110 includes a start switch.
  • the rectifier 200 is used to convert the power output from the internal combustion generator 100 into the first direct current.
  • the power module 300 is configured to step down the first direct current output from the rectifier 200 to the second direct current.
  • the external module 400 is used to connect with the battery 500; wherein, the external module 400 is connected to a start switch, and the start switch is used to connect the circuit so that the battery 500 can supply power to the start-stop device 110; the external module 400 is connected to the power module 300, The second DC power output by the power module 300 charges the battery 500 through the external module 400 .
  • the rectifier 200, the power module 300 and the external module 400 are modularly installed in the internal combustion generator 100, and the power output from the internal combustion generator 100 is rectified into the first direct current by the rectifier 200, which is conducive to voltage regulation.
  • the first direct current is then stepped down to the second direct current through the power supply module 300, which can directly charge the battery 500 of the drone and other equipment.
  • the battery 500 can be charged without carrying a charger, thereby reducing the labor intensity of plant protection operations; meanwhile, the selection of the internal combustion generator 100 is more flexible and is not limited by the power supply voltage of the charger.
  • the remaining power of the battery to be charged 500 can be used to provide starting power for the internal combustion generator 100, so that the internal combustion generator 100 does not need a built-in mobile power supply, which can reduce the weight compared with the traditional technology. Easy to carry.
  • the battery 500 can be charged without a charger, which reduces the loss in the intermediate voltage conversion process and the power transmission process, thereby reducing fuel consumption and plant protection operation costs.
  • start-stop device 110 can be selected according to the characteristics of the internal combustion generator 100 .
  • the start switch can realize on-off control of the start-up power supply between the internal combustion generator 100 and the battery 500 , and there are also various options.
  • the internal combustion generator 100 further includes an internal combustion engine 120
  • the start-stop device 110 includes a start-stop control module 114 for controlling the start and stop of the internal combustion engine 120 .
  • the start-stop control module 114 is used to send the start-up control program, so that the relevant start-up elements of the internal combustion engine 120 are activated to start the internal combustion engine 120, and then the internal combustion engine 120 converts chemical energy into mechanical energy, and then uses the power generator 130 to convert the mechanical energy into electrical energy, and finally uses a rectifier. 200 outputs the first direct current.
  • the start-stop device 110 includes a starter motor 140 and an igniter 150 , an intake unit 170 , a door and an injector 160 , the start-stop control module 114 is connected to an external module 400 , and the start-stop control module controls the start-up respectively.
  • the motor 140 , the igniter 150 , the intake unit 170 and the fuel injector 160 are used to control the start and stop of the internal combustion engine 120 .
  • the start-stop control module 114 enables the starter motor 140 to be energized and rotated, the igniter 150 is energized to generate sparks, and the intake unit 170 is opened to provide the combustion cylinders of the internal combustion engine 120 with gas and fuel injection required for combustion
  • the engine 160 injects fuel into the combustion cylinders of the internal combustion engine 120 to realize the ignition start of the internal combustion engine 120 .
  • the start-stop control module 114 can control other stop elements to stop, for example, the valve of the choke unit 180 is opened to prevent the internal combustion engine 120 from entering the air and the internal combustion engine 120 is shut down, or the fuel supply device stops fuel supply and the internal combustion engine 120 is closed.
  • the start switch is a push button switch. After the pressing force is removed, it can automatically reset and disconnect the circuit, so that the battery 500 is disconnected from the relevant start elements on the internal combustion generator 100, and the battery 500 will not be charged when charging. Power supply is beneficial to ensure the life of the battery 500.
  • the start switch is a start switch for starting the motor 140
  • the start-stop control module 114 is directly powered by the battery 500
  • other start-up components are controlled by the start-stop control module 114 .
  • the start switch is closed, the starter motor 140 rotates, and an excitation signal is generated, so that the start-stop control module 114 controls the actions of the relevant start elements according to the start-up characteristics of the internal combustion engine 120, and cooperates with the starter motor 140 to realize the start of the internal combustion engine 120.
  • the start-stop control module 114 is a part of the control device of the internal combustion generator 100 and is used to control the start and stop of the internal combustion engine 120 .
  • the start-stop control module 114 can receive the control information to control the internal combustion engine 120 to start or stop.
  • the start-stop control module 114 can be implemented with various control elements, such as programmable controllers, motion control cards, control circuit boards, and the like.
  • the internal combustion charging system further includes a first interaction module 600 , and the first interaction module 600 is connected in communication with the start-stop control module 114 for controlling the start-stop The module 114 controls the internal combustion engine 120 to stop or start and stop. In this way, through the first interaction module 600, it is convenient for the user to send the operation command, and the stop or start and stop control of the internal combustion engine 120 can be realized.
  • the cooperation between the first interaction module 600 and the start-stop control module 114 makes the design of the control operation part of the internal combustion generator 100 more flexible, and the operation controlled by the internal combustion generator 100 and the operation of the charging control can be integrated into the interaction module, It is also possible to keep the way of starting the internal combustion generator 100 on a conventional internal combustion generator 100 .
  • the first interaction module 600 may have various options, including but not limited to a mechanical control panel, a touch control panel, and the like.
  • the first interaction module 600 needs power supply to send the corresponding operation command. It may have a built-in mobile power supply, or use the battery 500 or the internal combustion generator 100 for power supply to save costs.
  • the internal combustion charging system further includes an inverter 700 .
  • the inverter 700 is electrically connected to the output end of the rectifier 200 for outputting alternating current to the first interaction module 600 , so that the first interaction module 600 can control the internal combustion engine 120 to stop through the start-stop control module 114 .
  • the inverter 700 outputs AC power to supply power to the control panel, so that after the internal combustion generator 100 is started, the first interaction module 600 performs the stop control operation, so that the charging control operation and the stop control operation after the charging is completed integrated together.
  • the first interaction module 600 includes a first indication unit, and the first indication unit outputs different indication states according to the alternating current change information output by the inverter 700 . Furthermore, the relevant information of the alternating current can be obtained through the first indicating unit, which is convenient for the user to check the supply of the alternating current. For example, when the voltage of the AC power is not stable, the indication state is red light to remind the user not to use the AC power supply temporarily, so as to avoid the user using unstable AC power, which may cause damage to the electrical equipment; when the voltage of the AC power is stable, the indication state is a green light. , reminding users that AC power can be used with confidence.
  • the power module 300 is further configured to supply power to the first interaction module 600 , so that the first interaction module 600 can control the internal combustion engine 120 to stop through the start-stop control module 114 .
  • the second direct current can be directly used to supply power to the first interaction module 600 , so that after the internal combustion generator 100 is started, the first interaction module 600 can perform a stop control operation.
  • the first interaction module 600 is electrically connected to the external module 400 , so that the battery 500 can supply power to the first interaction module 600 .
  • the remaining power of the battery 500 can be directly used to power the first interaction module 600, and the first interaction module 600 can integrate a one-key start-stop operation, which makes the internal combustion charging system more convenient to use.
  • the first interaction module 600 includes a first switch circuit, and the first switch circuit is a master switch of the internal combustion charging system for controlling the start and stop of the internal combustion generator 100 .
  • the switch circuit is turned on, or sends a message to the start control module.
  • the start control module controls the internal combustion engine 120 to start; when the user performs a second interactive action with the first interaction module 600, the switch circuit is disconnected, or a shutdown signal is sent to the start control module, and the start control module controls the internal combustion engine 120 to turn off.
  • the first interaction action may be pressing the “ON” button on the first interaction module 600
  • the second interaction action may be pressing the “OFF” button on the first interaction module 600 in response.
  • the first interaction action may be switching the button on the first interaction module 600 to the first state
  • the second interaction action may be switching the button on the first interaction module 600 to the second state.
  • the internal combustion charging system further includes an inverter 700 .
  • the inverter 700 is electrically connected to the output end of the rectifier 200 for outputting alternating current. In this way, the system can provide both DC power and AC power to meet the power demand of different power equipment and provide convenience for plant protection operations.
  • the internal combustion charging system further includes a socket 800 , and the socket 800 is electrically connected to the inverter 700 for providing AC power.
  • the socket 800 it is convenient to supply power to other AC devices, and the power supply connection is convenient.
  • the output voltage or current of the power supply provided by the internal combustion generator 100 still has large fluctuations. When charging the battery 500, it will be impacted by an instantaneous large current, which will damage the battery 500 and cause potential safety hazards.
  • the power module is an isolated power module. In this way, by setting the isolation power module, the instantaneously generated current shock can be isolated and output, and the battery can be charged with a stable current.
  • the isolated power supply module can be used for high-voltage step-down, that is, the voltage of the first direct current can be set to a high-voltage power greater than 250V, which can meet the charging needs of high-power batteries, and the charging process is safe and reliable.
  • converting the output power of the internal combustion generator into high-voltage electricity for transmission can reduce the transmission current, thereby reducing the heat generation of the transmission line, and thus meeting the needs of high-power battery fast charging. At the same time, it solves the traditional charging method.
  • the output voltage needs to be reduced to 220V (the standard power supply of the charger is ordinary commercial power), and then the fast charging charger needs to Correct the power factor of the 220V voltage, boost the 220V to 400V, and then step down the voltage to the battery voltage through the isolation transformer, resulting in a large energy loss and the problem that the output power of the internal combustion generator cannot be fully utilized.
  • 220V the standard power supply of the charger is ordinary commercial power
  • isolation means that there is no direct electrical connection between the input loop and the output loop of the power supply.
  • isolated power module utilizes the principle of charge migration in the process of charge and discharge of capacitors, combined with the control switch to achieve step-down and steady-current output, and there are many options.
  • the voltage of the first direct current is (380V-420V); or/and the voltage of the second direct current is less than or equal to 60V. In this way, high-power charging of high-power batteries can be realized, and the fast charging requirements of high-power batteries can be met.
  • the internal combustion charging system further includes a charging control module 900 , and the charging control module 900 is electrically connected between the power module 300 and the external module 400 , which is used to control the current or/and voltage output by the power module 300 .
  • the charging control module includes a main control chip, and the main control chip includes a processor.
  • the processor can be a Micro-controller Unit (MCU), a Central Processing Unit (CPU) or a Digital Signal Processor (Digital Signal Processor). , DSP), etc.
  • the charging control module further includes a communication unit for communicating with other modules of the internal combustion charging system, and the communication unit may use wired communication or wireless communication for communication.
  • the power supply module includes a DC power supply module with a communication function
  • the DC power supply module may specifically include a communication logic interface circuit, a communication circuit, a communication sending and receiving self-checking circuit, etc. connected to the charging control module.
  • the power module also has the feature of adjusting the magnitude of the power signal output by it, and can output voltages and/or currents of different magnitudes to meet user needs.
  • the power supply module can be a DC power supply module designed by those skilled in the art that can realize the above functions, or a DC power supply module in the disclosed technology can be used, for example, the disclosed communication base station power supply can be used, and the output power is usually 2000W Between 5000W, the present disclosure does not limit.
  • the battery to be charged may be the power supply battery of the terminal device.
  • the terminal equipment can be high-power power supply equipment, such as high-power electric equipment such as agricultural drones, or other equipment that requires high-power batteries for power supply, which is not limited here.
  • the high power of the present disclosure may be more than 5000W of power.
  • the internal combustion charging system in the embodiment of the present disclosure has multiple power supply modules (as shown in FIG. 7 and FIG. 8 ), which can allow multiple rectifiers to provide power to the corresponding power supply modules through the input interface, and finally achieve high power output.
  • Using the internal combustion charging system of the present disclosure to charge the to-be-rechargeable battery can solve the problem that the charging power of the internal combustion charging system in the disclosed technology is small.
  • the user can configure the maximum rated voltage value (such as the first voltage threshold) or the maximum rated current value (such as the first current threshold) output by the rectifier on the charging control module in advance, or configure other information, this disclosure does not limit.
  • the charging control module can communicate with the control device of the internal combustion generator to control the output power of the internal combustion engine through the throttle system, so as to realize the power control of the output power of the internal combustion generator.
  • the charging control module 900 first obtains the voltage of the first direct current, and then compares the obtained voltage of the first direct current with the first voltage threshold. When the voltage of the first direct current is greater than the first voltage threshold, the charging control module 900 sends a control command to reduce the output power of the internal combustion generator 100, thereby reducing the charging power of the internal combustion charging system to ensure that the internal combustion charging system and the waiting The safety of the rechargeable battery 500 increases the service life of the internal combustion generator 100 .
  • the charging control module 900 first obtains the current of the first direct current, and then compares the obtained current of the first direct current with the first current threshold. When the current of the first direct current is greater than the first current threshold, the power module 300 sends a control command to reduce the output power of the internal combustion generator 100, thereby reducing the charging power of the internal combustion charging system to ensure the internal combustion charging system and the battery to be charged. 500 safety, and improve the service life of the internal combustion generator 100.
  • the control of the output power of the internal combustion generator 100 can be implemented in various ways, such as controlling the gas inlet of the throttle valve 190 to be reduced, or/and the fuel flow of the fuel supply valve to be reduced.
  • the user can configure the voltage threshold corresponding to each current value on the charging control module in advance, and can also configure the mathematical relationship between the current value and the voltage threshold, and the voltage threshold corresponding to the current value can be obtained from a certain current value. , or other information may be configured, so as to obtain the voltage threshold corresponding to the current value according to the current value, which is not limited in the present disclosure.
  • the user can configure the voltage threshold corresponding to each current value on the charging control module in advance, and can also configure the mathematical relationship between the current value and the voltage threshold, and the voltage threshold corresponding to the current value can be obtained from a certain current value. , or other information may be configured, so as to obtain the voltage threshold corresponding to the current value according to the current value, which is not limited in the present disclosure.
  • the internal combustion charging system further includes a power cord, and the power module 300 is connected to the rectifier 200 through the power cord.
  • the charging control module 900 of the internal combustion charging system first obtains the voltage of the input power line of the internal combustion charging system, and then compares the obtained voltage value with the voltage threshold corresponding to the current current of the input power line.
  • the charging control module 900 sends a control command to the power module 300 corresponding to the power wire, so as to reduce the output current of the power module 300 corresponding to the power wire, so that the internal combustion
  • the charging system implements power reduction to ensure the safety of the internal combustion charging system and the battery to be charged 500 .
  • the aforementioned charging control module may send a control command to the corresponding power supply module to change the duty cycle of the switch control signal of the power supply module, thereby reducing the output current of the power supply module , or other manners, which are not limited in the present disclosure.
  • the voltage threshold may be determined based on an amount of temperature rise of the charge control module. In extreme scenarios, when the power supply trips or burns wires, it will be accompanied by changes in the temperature of the charging control module. Therefore, the voltage threshold can be set to increase or decrease by a certain amount according to the temperature change of the charging control module, so as to limit the input power of the internal combustion charging system.
  • the voltage threshold is positively related to the amount of temperature rise of the charge control module.
  • the temperature of the charging control module tends to rise, and the resistance value of the power cord becomes larger. Therefore, the voltage value corresponding to the power cord also rises. Therefore, when the voltage threshold is preconfigured, it can be set to be positively correlated with the temperature increase of the charging control module.
  • the input power of the internal combustion charging system can be adjusted in time, so as to limit the input power of the internal combustion charging system. Therefore, even in some extreme scenarios, the external power supply trips or burns wires, etc., the damage to the internal combustion charging system and the battery to be charged can be avoided as much as possible.
  • the charging control module of the internal combustion charging system is further configured to control the output current of each power module based on the environmental information and/or the state information of the battery.
  • the method for controlling the output current of each power module can be as described above, by controlling the duty ratio of the switch control signal of the power module, so as to adjust the output current of the power module.
  • some sensor modules may be integrated in the internal combustion charging system to obtain charging environmental information.
  • the environmental information may include: environmental temperature, environmental humidity, and the like.
  • Information such as ambient temperature and ambient humidity can be obtained through a temperature sensor and a humidity sensor, respectively.
  • the charging control module when the charging control module obtains the temperature information of the current charging environment through a temperature sensor or the like, the charging control module determines whether the ambient temperature is lower than a preset temperature, and when it is lower than the preset temperature, the charging control module controls each The power module outputs an output current that is less than the preset current value.
  • the charging control module controls the output current of each power module based on state information of the battery to be charged, wherein the state information of the battery includes the current voltage of the battery, the current temperature of the battery, and the output current requested by the battery. at least one.
  • the battery to be charged has a communication function, which can establish communication with the internal combustion charging system, and send the current voltage of the battery and the requested output current value to the charging control module of the internal combustion charging system.
  • the battery to be charged may also have a temperature sensing module, and the battery to be charged obtains its own current temperature and uses its own communication function to send the obtained temperature information to the charging control module.
  • the charging control module obtains status information such as the current voltage of the battery, the current temperature, and the output current requested by the battery, the charging control module can charge the battery to be rechargeable based on a preset charging strategy.
  • the charging control module controls each power supply module of the plurality of power supply modules to The lower output current charges the battery to be recharged.
  • the charging control module receives the output current request sent by the battery to be charged, the charging control module charges the battery to be charged with the output current requested by the battery to be charged.
  • the battery to be charged can be charged with high power with a safer and more reasonable charging power, which is beneficial to ensure The internal combustion charging system and the safety of the battery to be charged avoid damage to the equipment.
  • the internal combustion charging system is used to charge the battery.
  • the charging control module of the internal combustion charging system determines the aging state of the connecting wires of the internal combustion charging system by obtaining the relationship between the current and the voltage of the connecting wires of the internal combustion charging system, so as to eliminate the combustion risk during the charging process.
  • the connecting wires of the internal combustion charging system include the internal connecting wires between the charging control module of the internal combustion charging system and the power supply module, and also the second internal connecting wires between the input interface of the internal combustion charging system and the rectifier, and the power supply module and the to-be-charged wire. External connection wires between batteries.
  • the relationship between the current and the voltage of the connecting wire can be characterized by the impedance of the connecting wire or the relationship between the voltage of the connecting wire and the current. Specific descriptions are given below with reference to different embodiments.
  • the charging control module obtains the output voltage of the power supply module and the input voltage of the charging control module at multiple different times, and then passes the input voltage The voltage difference from the output voltage obtains the voltage on the internal connecting wires. Based on the corresponding time, the current on the corresponding internal connection wire monitored by the charging control module determines whether the voltage of the internal connection wire decreases with the increase of the current. If so, it is determined that the internal connection wire has aged and has combustion and other security risks.
  • the charging control module obtains the input voltage and output voltage of the power supply module at multiple different times, which can be realized by a sampling circuit, and the sampling circuit can be a conventional circuit that realizes the sampling function, which will not be repeated here.
  • the multiple different moments may be moments at the same time interval, or may be moments at different time intervals, which are not limited in the present disclosure.
  • the internal combustion charging system is used to charge the battery.
  • the charging control module of the internal combustion charging system determines the aging state of the connecting wire by obtaining the relationship between the current and the voltage of the connecting wire of the internal combustion charging system; and reduces the aging state of the internal combustion charging system according to the aging state of the connecting wire. The charging power reduces the heat generation of the line to eliminate the risk of burning during the charging process.
  • the "connecting wire of the internal combustion charging system” includes the connecting wire between the internal combustion generator and the rectifier, the connecting wire between the rectifier and the power module, the internal connecting wire between the charging control module and the power module, and the power module.
  • the connecting wire between the external module and the external module also includes the connecting wire between the external module and the battery to be charged.
  • the relationship between the current and the voltage of the connecting wire can be characterized by the impedance of the connecting wire or the relationship between the voltage of the connecting wire and the current. Specific descriptions are given below with reference to different embodiments.
  • the charging control module 900 obtains the output voltage of the power module 300 and the charging control The input voltage of the module 900, according to the difference between the input voltage and the output voltage, that is, the voltage on the internal wire, combined with the current on the internal wire monitored by the charging control module 900, the impedance on the internal connection wire can be obtained.
  • the obtained impedance on the internal connecting wire is compared with the impedance on the standard internal connecting wire to determine whether the error between the impedance on the internal connecting wire and the impedance on the standard internal connecting wire is within the abnormal range, and if so, determine the connecting wire Has aged and has safety risks such as burning.
  • the obtained impedance on the internal connection wire may be the impedance value obtained once or the average value of the impedance obtained multiple times, which is not limited in the present disclosure.
  • the charging control module obtains the voltage of the input interface of the internal combustion charging system at multiple different times, and obtains the first voltage according to the output voltage of the rectifier. 2 Voltage on the internal connection wires. Based on the current at the corresponding input interface monitored and obtained by the charging control module at the corresponding time, it is determined whether the voltage on the second internal connection wire decreases with the increase of the current, and if so, it is determined that the second internal connection wire has Aging or inferior wires have safety risks such as burning.
  • the charging control module obtains the voltage of the input interface of the internal combustion charging system, according to when the internal combustion charging system first starts (ie the internal combustion charging system When the input current is approximately equal to 0), the input voltage of the internal combustion charging system is obtained, and the voltage on the second internal connection wire is obtained. Based on the current at the corresponding input interface monitored and obtained by the charging control module, the impedance on the second internal connecting wire can be obtained, and the obtained impedance on the second internal connecting wire is compared with the impedance on the standard second internal connecting wire.
  • the obtained impedance on the second internal connection wire may be an impedance value obtained once or an average value of impedance obtained multiple times, which is not limited in the present disclosure.
  • the charging control module obtains the output voltage of the charging control module and the voltage of the battery to be charged at multiple different times, and based on the difference between the two voltages, Obtain the voltage on the external connection wires. Based on the corresponding time, the input current of the corresponding battery to be charged obtained by monitoring the charging control module determines whether the voltage on the external connection wire decreases with the increase of the current. If so, it is determined that the external connection wire has aged or is Inferior wires have safety risks such as burning.
  • the charging control module obtains the output voltage of the charging control module and the voltage of the battery to be charged, and obtains the external connection wire based on the difference between the two voltages. Output voltage, get the voltage on the external connection wire. Based on the input current of the corresponding to-be-charged battery monitored and obtained by the charging control module, the impedance on the external connection wire can be obtained, and the obtained impedance on the external connection wire is compared with the impedance on the standard external connection wire to determine the external connection.
  • the obtained impedance on the external connection wire may be the impedance value obtained once or the average value of the impedance obtained multiple times, which is not limited in the present disclosure.
  • the charging control module of the internal combustion charging system determines the aging state of the connecting wires of the internal combustion charging system by obtaining the relationship between the current and the voltage of the internal connecting wire, the second internal connecting wire and the external connecting wire of the internal combustion charging system.
  • the aging state of only one of the internal connection wire, the second internal connection wire and the external connection wire of the internal combustion charging system can be judged, or any two and The aging states of the three connecting wires can be judged, and even the aging states of other connecting wires in the internal combustion charging system can be judged, which is not limited in the present disclosure.
  • reducing the charging power of the internal combustion charging system includes reducing the output power of the internal combustion generator. Further adjustment is performed from the power supply head, which is conducive to saving fuel and reducing charging costs.
  • the division of the above functional modules is only a logical function division.
  • the switch control sub-module is divided into the charging control module, which is used to realize the Adjustment of the output current of the power module; another example, the input interface is used as an input module alone to receive the power supply of the rectifier.
  • the working environment is often harsh.
  • the external power supply is prone to tripping, burning wires, etc., which in turn causes problems such as open circuit and short circuit of the power module of the internal combustion charging system, and even irreversible damage to rechargeable batteries. .
  • the charging control module is further configured to output alarm information when the state of the internal combustion charging system and/or the battery is abnormal.
  • the charging control module communicates with each module in the internal combustion charging system (such as a power supply module, a communication sub-module, an input power line, etc.) and the battery, and can obtain status information of the internal combustion charging system and the battery.
  • the charging control module determines that there is an abnormal condition, the charging control module can output alarm information to remind the user, so as to timely check the problems of the internal combustion charging system and the battery and avoid safety accidents.
  • the alarm information can be displayed through the LED display unit of the interactive module of the internal combustion charging system, for example, through a specific lighting method of the LED display unit for warning; or through the buzzer of the interactive module to emit a specific alarm sound. Warning.
  • the internal combustion charging system can also include an LCD panel.
  • the charging control module directly sends alarm information to the LCD panel. After being encoded by the LCD encoding module, the alarm information is displayed on the LCD panel in the form of text.
  • the charging control module can timely remind users of potential safety hazards in the current equipment, so that users can troubleshoot problems in a timely manner and avoid the occurrence of various safety accidents.
  • each power module is controlled to gradually increase the output current value according to a preset step size, thereby avoiding safety problems such as damage to the internal combustion charging system and tripping of the rectifier caused by sudden changes in the charging current.
  • power modules include inductive impedances such as inductors.
  • the charging control module of the internal combustion charging system can be used to control the power module to gradually increase the current value of the output current according to a preset step size.
  • the power supply module and the charging control module have communication sub-modules, which can realize mutual communication between the power supply module and the charging control module.
  • the power supply module may be a power supply module in the prior art, or a power supply module designed by those skilled in the art, which is not limited in the present disclosure.
  • the charging control module 900 may preliminarily set the first length value of the current increase of the power module 300 .
  • the first step length value can be directly set as an empirical value, or can be calculated and obtained according to the relationship between the charging current of the battery 500 by the power module 300 and the current charging environment parameters, etc., which is not limited in the present disclosure.
  • the charging control module 900 communicates with the communication sub-module 2 of the power module 300 through its own communication sub-module 1310 to inform the power module 300 to gradually increase the current of the output current according to the preset first step length value value.
  • the communication may be wired communication or wireless communication, which is not limited in the present disclosure.
  • the second step value, the third step value and the first threshold ie, Different step sizes can be used in different charging phases.
  • the charging control module communicates with the power supply module to inform the power supply module to gradually increase the current value of the output current according to the preset second step value.
  • the charging control module detects whether the output current of the power supply module is greater than the first threshold. If the current output current of the power supply module is greater than the first threshold, the charging control module communicates with the power supply module to inform the power supply module according to the preset
  • the third step value gradually increases the current value of the output current to the rated charging current of the battery to be charged. Wherein, the third step size is greater than the second step size.
  • the preset step size values may be the same or different, which can be determined by those skilled in the art according to the actual situation, which is not limited in the present disclosure.
  • the power module that controls the internal combustion charging system charges the battery to be rechargeable with a small charging current, and when the charging current reaches a certain level, it will further increase
  • the size of the charging current is beneficial to avoid damage to the internal combustion charging system and the battery caused by sudden changes in the charging current.
  • the charging control module is configured to control the power module to gradually increase the current value of the output current according to a preset step size by adjusting the duty cycle of the switch control signal of the power module.
  • the power module in addition to the input interface and the communication sub-module 2 , the power module also includes a switch control sub-module.
  • the switch control sub-module can change the output current of the power module by changing the duty ratio of its switch control signal.
  • the communication sub-module 1 of the charging control module communicates with the communication sub-module 2 of the power supply module, informing the power supply module to gradually follow the preset first step length value.
  • the communication sub-module 2 of the power module sends the information to the switch control sub-module, and the switch control sub-module changes the duty cycle of its switch control signal, thereby making the power module follow the preset step value. Gradually increase the current value of the output current.
  • the stepwise increase of the charging current is achieved by adjusting the duty ratio of the switch control signal of the power module, which is beneficial to avoid damage to the internal combustion charging system and the battery caused by the sudden change of the charging current.
  • the internal combustion charging system further includes a second interaction module 1000, the second interaction module 1000 is connected to the charging control module 900 and each power supply module 300 respectively, and is used to control the second switch The signals are sent to the charging control module 900 and each power supply module 300, respectively.
  • the interaction module includes a switch circuit, which is a master switch of the internal combustion charging system for controlling the switch of the charging control module and each of the plurality of power supply modules.
  • the switch circuit When the user performs the third interaction action with the interaction module, the switch circuit is turned on, or sends a turn-on signal to the charging control module and each power supply module, and the charging control module and each power supply module are in the ON state; when the user performs the fourth interaction with the interaction module In the interactive action, the switch circuit is disconnected, or a shutdown signal is sent to the charging control module and each power supply module, and the charging control module and each power supply module of the plurality of power supply modules are in a closed state.
  • the first interaction action may be pressing the "ON” button on the interaction module
  • the fourth interaction action may be correspondingly pressing the "OFF” button on the interaction module.
  • the third interaction action may be switching the button on the second interaction module to the first state
  • the fourth interaction action may be switching the button on the second interaction module to the second state.
  • the charging control module when the charging control module receives the second switch control signal, the current information is saved. For example, when the charging control module receives the second switch control signal to turn off the charging control module, the charging control module saves the current setting information, and the setting information may be the step size of the current increase when charging is started, or the setting information for safe charging. Preset voltage thresholds for input ports, etc.
  • the second interaction module includes a second indication unit, and the second indication unit is configured to output different indication states based on the state information output by the charging control module.
  • the second indication unit is an indicator light, for example, an LED display unit may be included.
  • the LED display unit may include multiple LED indicators, and multiple LEDs may use the same color or different colors. In this way, a plurality of different lighting modes are combined with a plurality of LEDs of the LED display unit, and the status information currently output by the charging control module is indicated by a plurality of lighting modes.
  • the status information may be charging power information, for example, charging is in progress and charging is completed, and may also be information on the number of power modules used for charging, and so on.
  • the LED display unit can include three LED lights, and each LED light corresponds to a different label, such as LED1, LED2 and LED3, respectively, and the three LED lights can be combined into different lighting modes.
  • the state information output by the charging control module is indicated, wherein the internal combustion charging system includes two power modules as an example for description.
  • Table 1 shows the corresponding relationship between the lighting mode of the indicating unit and the status information output by the charging control module
  • the LEDs can also display different colors to represent different status information output by the charging control module. I won't go into details here.
  • the second indication unit shown may also be a buzzer. Before the internal combustion charging system leaves the factory, technicians or users pre-set the sounding mode of the buzzer, including sounding time, sounding frequency and sounding interval, etc., to indicate different status information output by the charging control module.
  • the above-mentioned LED display unit can also be combined with a buzzer and other devices to jointly represent different status information output by the charging control module. It will not be repeated here.
  • the output state information of the charging control module can be clearly indicated, which is helpful for the user to judge the current charging state of the high-power charging of the battery to be recharged.
  • users can find it in time to avoid equipment damage and waste of resources.
  • the second interaction module can be modularly integrated with the aforementioned first interaction module into a control panel, which is convenient for the user to use.
  • the external module is provided with a charging slot (not shown) for placing the battery to be charged.
  • the battery is placed in the charging slot, which is convenient for the installation and removal of the battery and the internal combustion charging system.
  • the external module may be a charging interface, a battery box, or the like.
  • the charging control module of the internal combustion charging system is provided with an ID resistor, and the charging control module is further configured to call a charging control strategy based on the resistance of the ID resistor to control the output currents of the multiple power supply modules.
  • the corresponding relationship between the ID resistance and the charging control strategy can be stored in the storage unit in advance. After detecting the resistance value of the ID resistance, the charging control module can find the corresponding charging control strategy and call the found charging control strategy.
  • the charging control strategy may include control parameters for controlling the output currents of multiple power modules, and each charging control strategy corresponds to a set of control parameters.
  • the ID resistors are removable and replaceable. By replacing the ID resistor, the same internal combustion charging system can output different output currents, so as to adapt to different types of batteries to be charged.
  • the charging control module is provided with a storage unit for storing a plurality of charging control strategies for the charging control module to call.
  • the storage unit may be an internal storage unit of the internal combustion charging system, such as a hard disk or a memory of the internal combustion charging system.
  • the storage unit may also be an external storage device of the internal combustion charging system, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash memory card (Flash) equipped on the internal combustion charging system Card), etc.
  • the storage unit may also include both an internal storage device of the internal combustion charging system and an external storage device.
  • the storage unit is used to store computer programs and other programs and data required by the device.
  • the storage unit may also be used to temporarily store data that has been output or is to be output.
  • the storage unit further includes a storage medium, and the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), and the like.
  • the charging control strategy includes: controlling the charging current during the charging startup process; in extreme environments, controlling the charging current according to the voltage value of the input interface; controlling the charging current based on environmental information and the state information of the battery to be charged, and many more.
  • the charging control module of the internal combustion charging system can charge the to-be-charged battery by calling the appropriate charging strategy stored in the storage unit, which can allow the to-be-charged battery to be charged with a more appropriate charging current, and can avoid the internal combustion charging system and the internal combustion caused by improper charging parameters. Damage to the battery to be charged.
  • the rectifier is arranged on the internal combustion generator
  • the internal combustion charging system further includes a protective box (not shown), and the power module, the charging control module and the external module are built in the protective box,
  • the protective box is detachably connected to the internal combustion generator.
  • the protection box is used to protect the power supply module, the charging control module and the external module to improve the protection effect.
  • the detachable connection between the protective box and the internal combustion generator is used, so that the two can be assembled into a whole, and then modularly plugged, which is beneficial to improve the production efficiency and reduce the manufacturing cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Système de charge à combustion interne, qui est utilisé pour charger une batterie (500). Le système de charge à combustion interne comprend un générateur à combustion interne (100), un redresseur (200), un module d'alimentation (300) et un module externe (400). Le générateur à combustion interne (100) est utilisé pour produire de l'électricité pour charger la batterie (500). Le générateur à combustion interne (100) comprend un dispositif marche-arrêt (110). Le dispositif marche-arrêt (110) est utilisé pour commander le démarrage et l'arrêt du générateur à combustion interne (100). Le dispositif marche-arrêt (110) comprend un commutateur de démarrage (112). Le redresseur (200) est utilisé pour convertir la puissance délivrée par le générateur à combustion interne (100) en une première puissance à courant continu. Le module d'alimentation électrique (300) est utilisé pour abaisser la première puissance à courant continu délivrée par le redresseur (200) en une seconde puissance à courant continu. Le module externe (400) est utilisé pour être connecté à la batterie (500), le commutateur de démarrage (112) étant utilisé pour connecter un circuit de telle sorte que la batterie (500) peut alimenter le dispositif marche-arrêt (110) de manière à démarrer le générateur à combustion interne (100), et la seconde puissance à courant continu délivrée par le module d'alimentation (300) charge la batterie (500) à l'aide du module externe (400).
PCT/CN2020/127621 2020-11-09 2020-11-09 Système de charge à combustion interne WO2022095059A1 (fr)

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