Vehicle fleet rescue fast charging device, method and vehicle

Abstract

The present invention discloses a fast charging device, method and vehicle for fleet rescue, belonging to the technical field of vehicle charging. The fast charging device for fleet rescue includes a conversion module, a current stabilizing module, a switching module and a control module; the conversion module receives the input charging current and converts the charging current to obtain a converted current; the control module detects the charging requirements of the vehicle to be rescued and generates a current stabilizing signal and a switching control signal according to the charging requirements; the current stabilizing module stabilizes the converted current according to the current stabilizing signal to obtain a stabilized current, and conveys the stabilized current to the vehicle to be rescued for charging; the switching module receives the switching control signal sent by the control module and performs switching control according to the switching control signal to connect the loop between the current stabilizing module and the vehicle to be rescued. By processing the current of the vehicle to be charged through this device, a controllable and variable current can be output to the vehicle to be charged, so as to quickly and reliably charge the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle charging, and particularly to a fast charging device, method and vehicle for fleet rescue. Background Art

[0002] With the continuous popularization of new energy vehicles, more and more pure electric vehicles will be put into operation. However, long charging time and short cruising range are inevitable defects of pure electric vehicles. At present, due to limited cruising range, new energy vehicles are prone to situations where they cannot reach the preset destination due to low battery power during daily driving, especially during long-distance trips, and need charging rescue services; or they cannot continue driving due to exhausted battery power and need charging rescue services, etc.

[0003] Existing vehicles have a discharge gun function and can only output alternating current from a specific vehicle to the vehicle to be charged. At the same time, the charging power is small and the vehicle cannot be rescued quickly. Summary of the Invention

[0004] The main object of the present invention is to provide a fast charging device, method and vehicle for fleet rescue, aiming to solve the technical problem of slow charging of rescue vehicles in the prior art.

[0005] To achieve the above object, the present invention provides a fast charging device for fleet rescue. The fast charging device for fleet rescue includes: a conversion module, a current stabilizing module and a switch module connected in sequence, and the conversion module, the current stabilizing module and the switch module are respectively connected to a control module;

[0006] The conversion module is configured to receive the input charging current, convert the charging current to obtain a converted current, and transmit the converted current to the current stabilizing module;

[0007] The control module is configured to detect the charging requirement of the vehicle to be rescued, generate a current stabilizing signal and a switch control signal according to the charging requirement, and transmit the current stabilizing signal to the current stabilizing module and the switch control signal to the switch module;

[0008] The current stabilizing module is configured to receive the current stabilizing signal sent by the control module, stabilize the converted current according to the current stabilizing signal to obtain a stabilized current, and transmit the stabilized current to the vehicle to be rescued for charging;

[0009] The switch module is configured to receive the switch control signal sent by the control module and perform switch control according to the switch control signal to connect the circuit between the current stabilizing module and the vehicle to be rescued.

[0010] Optionally, the fleet rescue fast charging device further includes: a boost module, which is respectively connected to the switch module, the control module, and the vehicle to be rescued, and the switch control signal includes a first switch control signal;

[0011] The control module is further configured to generate a first switch control signal when the charging requirement of the vehicle to be rescued meets the preset voltage requirement, and transmit the first switch control signal to the switch module;

[0012] The switch module is further configured to connect the circuit between the current stabilization module and the boost module according to the first switch control signal;

[0013] The boost module is configured to boost the steady current transmitted by the current stabilization module to obtain a target current, and transmit the target current to the vehicle to be rescued for charging.

[0014] Optionally, the conversion module includes: an AC / DC conversion unit, the charging current includes an alternating current, and the converted current includes a direct current;

[0015] The AC / DC conversion unit is configured to receive the alternating current input by the charging end, convert the alternating current to obtain a direct current, and deliver the direct current to the current stabilization module.

[0016] Optionally, the fleet rescue fast charging device further includes: a charging input end and a charging output end, the charging input end is respectively connected to the charging end and the conversion module, and the charging output end is respectively connected to the switch module and the vehicle to be rescued;

[0017] The charging input end is configured to receive the charging current input by the charging end and transmit the charging current to the conversion module;

[0018] The charging output end is configured to receive the steady current transmitted by the current stabilization module and transmit the steady current to the vehicle to be rescued for charging.

[0019] Optionally, the control module includes: a detection unit and a control unit;

[0020] The detection unit is configured to generate a first detection signal and detect the connection state between the charging input end and the charging end according to the first detection signal;

[0021] The detection unit is further configured to detect the connection state between the charging output end and the vehicle to be rescued according to the first detection signal;

[0022] The detection unit is further configured to generate a second detection signal when the connection state between the charging input end and the charging end is normal and the connection state between the charging output end and the vehicle to be rescued is normal;

[0023] The detection unit is further configured to detect the charging requirement of the vehicle to be rescued according to the second detection signal, and transmit the charging requirement to the control unit;

[0024] The control unit is configured to generate a first switch control signal to the switch module when the charging requirement meets a preset voltage requirement.

[0025] Optionally, the switch module includes: a first switch and a second switch;

[0026] The first end of the first switch is connected to the current stabilizing module, and the second end of the first switch is connected to the boost module;

[0027] The first end of the second switch is connected to the current stabilizing module, and the second end of the second switch is connected to the vehicle to be rescued.

[0028] Optionally, the control module is further configured to close the first switch according to the first switch control signal, so that the circuit between the current stabilizing module and the boost module is connected through the first switch;

[0029] The control module is further configured to open the second switch according to the first switch control signal, so that the circuit between the current stabilizing module and the vehicle to be rescued is disconnected.

[0030] Optionally, the switch control signal further includes: a second switch control signal, and the control module is further configured to generate a second switch control signal when the charging requirement of the vehicle to be rescued is less than or equal to the preset voltage requirement;

[0031] The control module is further configured to close the second switch according to the second switch control signal, so that the circuit between the current stabilizing module and the vehicle to be rescued is connected through the second switch;

[0032] The control module is further configured to open the first switch according to the second switch control signal, so that the circuit between the current stabilizing module and the boost module is disconnected.

[0033] In addition, to achieve the above object, the present invention provides a fast charging method for fleet rescue, which is applied to the fast charging device for fleet rescue described above. The fast charging device for fleet rescue includes: a conversion module, a current stabilizing module, and a switching module connected in sequence. The conversion module, the current stabilizing module, and the switching module are respectively connected to a control module. The method includes the following steps:

[0034] The conversion module receives the input charging current, converts the charging current to obtain a converted current, and delivers the converted current to the current stabilizing module;

[0035] The control module detects the charging demand of the vehicle to be rescued, generates a current stabilizing signal and a switching control signal according to the charging demand, sends the current stabilizing signal to the current stabilizing module, and sends the switching control signal to the switching module;

[0036] The current stabilizing module receives the current stabilizing signal sent by the control module, stabilizes the converted current according to the current stabilizing signal to obtain a stabilized current, and delivers the stabilized current to the vehicle to be rescued for charging;

[0037] The switching module receives the switching control signal sent by the control module, and performs switching control according to the switching control signal to connect the circuit between the current stabilizing module and the vehicle to be rescued.

[0038] In addition, to achieve the above object, the present invention also proposes a vehicle, which is applied to the fast charging device for fleet rescue and the fast charging method for fleet rescue described above.

[0039] By arranging a conversion module, a current stabilizing module, and a switching module connected in sequence in the fast charging device for fleet rescue in the present invention, the conversion module, the current stabilizing module, and the switching module are respectively connected to the control module; the conversion module is used to receive the input charging current, convert the charging current to obtain a converted current, and deliver the converted current to the current stabilizing module; the control module is used to detect the charging demand of the vehicle to be rescued, generate a current stabilizing signal and a switching control signal according to the charging demand, send the current stabilizing signal to the current stabilizing module, and send the switching control signal to the switching module; the current stabilizing module is used to receive the current stabilizing signal sent by the control module, stabilize the converted current according to the current stabilizing signal to obtain a stabilized current, and deliver the stabilized current to the vehicle to be rescued for charging; the switching module is used to receive the switching control signal sent by the control module, and perform switching control according to the switching control signal to connect the circuit between the current stabilizing module and the vehicle to be rescued. By processing the current of the vehicle to be charged through this device, a controllable and variable current can be output to the vehicle to be charged, so as to quickly and reliably charge the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic structural diagram of the first embodiment of the vehicle fleet rescue fast charging device of the present invention;

[0041] Figure 2 It is a schematic overall structural diagram of an embodiment of the vehicle fleet rescue fast charging device of the present invention;

[0042] Figure 3 It is a schematic flowchart of the second embodiment of the vehicle fleet rescue fast charging device of the present invention;

[0043] Figure 4 It is a schematic structural diagram of the third embodiment of the vehicle fleet rescue fast charging device of the present invention;

[0044] Figure 5 It is an internal functional logic diagram of an embodiment of the vehicle fleet rescue fast charging device of the present invention;

[0045] Figure 6 It is a schematic flowchart of the first embodiment of the vehicle fleet rescue fast charging method of the present invention;

[0046] Figure 7 It is a schematic overall flowchart of an embodiment of the vehicle fleet rescue fast charging method of the present invention.

[0047] Explanation of the reference numerals in the drawings:

[0048] Label Name Label Name 1 Fast Charging Device for Fleet Rescue 401 Detection Unit 10 Conversion Module 402 Control Unit 101 AC / DC Conversion Unit 50 Boost Module 20 Current Stabilization Module 60 Charging Input Terminal 30 Switch Module 70 Charging Output Terminal K1 First Switch 2 Rescue Fleet K2 Second Switch 3 Vehicle to be Rescued 40 Control Module

[0049] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] Refer to Figure 1 , Figure 1 It is a schematic structural diagram of the first embodiment of the vehicle fleet rescue fast charging device of the present invention.

[0052] In this embodiment, the vehicle fleet rescue fast charging device 1 includes: a conversion module 10, a current stabilizing module 20, and a switching module 30 that are connected in sequence. The conversion module 10, the current stabilizing module 20, and the switching module 30 are respectively connected to a control module 40. The conversion module 10 is configured to receive the input charging current, convert the charging current to obtain a converted current, and transmit the converted current to the current stabilizing module 20.

[0053] It should be noted that the conversion module 10 is used to receive the input charging current. The charging current is the charging current input at the charging end, which can be the charging end of the rescue fleet or the charging end of the charging station. This embodiment does not limit this, and this embodiment takes the charging end of the rescue fleet 2 as an example for illustration. The number of vehicles in the rescue fleet 2 can be 2, 3, 5, etc. This embodiment takes 5 vehicles as an example for illustration. The rescue fleet 2 includes vehicle A1, vehicle A2, vehicle A3, vehicle A4, and vehicle A5.

[0054] In specific implementation, the conversion module 10 receives the charging current input by the rescue fleet 2. The charging current includes alternating current. The conversion module 10 performs current conversion on the alternating current to obtain a converted current, and the converted current includes direct current. After determining that the input current is alternating current, the alternating current of the rescue fleet 2 is converted into direct current, and the converted direct current is delivered to the current stabilization module 20.

[0055] In this embodiment, the conversion module 10 includes: an AC / DC conversion unit 101. The AC / DC conversion unit 101 is used to receive the alternating current input at the charging end, convert the alternating current to obtain direct current, and deliver the direct current to the current stabilization module 20.

[0056] It can be understood that the AC / DC conversion unit 101 is used to receive the alternating current input at the charging end of the rescue fleet 2, convert the alternating current into direct current, and deliver the converted direct current to the current stabilization module 20. The AC / DC conversion unit 101 includes 5 AC / DC conversion units, which respectively perform current conversion on the alternating current provided by each vehicle providing charging in the rescue fleet 2 to convert it into direct current. As Figure 2 shown, Figure 2 is the overall structural schematic diagram among the rescue fleet, the fleet rescue device, and the vehicle to be rescued in this embodiment. The rescue fleet 2 includes 5 vehicles: vehicle A, vehicle B, vehicle C, vehicle D, and vehicle E. Each vehicle in the rescue fleet 2 is connected to the slow charge AC interface through a bidirectional OBC (On Board Charger), outputs alternating current to the fleet rescue fast charge device 1 through the slow charge AC interface, performs current conversion and current stabilization processing, etc. on the alternating current through the fleet rescue fast charge device 1 to obtain direct current, and outputs the direct current to the vehicle to be rescued 3 through the fast charge DC interface to charge the vehicle to be rescued 3.

[0057] The control module 40 is used to detect the charging demand of the vehicle to be rescued 3, generate a current stabilization signal and a switch control signal according to the charging demand, send the current stabilization signal to the current stabilization module 20, and send the switch control signal to the switch module 30.

[0058] It should be noted that the control module 40 is used to generate a detection signal, detect the connection relationship with the rescue convoy through the detection signal. When the connection with the rescue convoy is normal, it detects the connection relationship with the vehicle 3 to be rescued through the detection signal. When the connection with the vehicle 3 to be rescued is normal, it obtains the charging requirements of the vehicle 3 to be rescued. The charging requirements include the charging current requirement and the maximum DC charging voltage requirement of the vehicle 3 to be rescued, and generates a constant current signal according to the charging current requirement of the vehicle 3 to be rescued, and sends the constant current signal to the constant current module 20 for current stabilization.

[0059] In a specific implementation, the control module 40 also generates a switch control signal according to the maximum DC charging voltage requirement of the vehicle 3 to be rescued, and sends the switch control signal to the switch module 30.

[0060] The constant current module 20 is configured to receive the constant current signal sent by the control module 40, stabilize the converted current according to the constant current signal to obtain a constant current, and deliver the constant current to the vehicle 3 to be rescued for charging.

[0061] In a specific implementation, for example, the charging current requirement of the vehicle 3 to be rescued is 10A, and the current output by each vehicle in the rescue convoy 2 is 3A. Then, the currents output by 5 vehicles in the rescue convoy 2 can be stabilized and integrated, and the current transmitted by the rescue convoy 2 is rectified into a constant current of 10A, and the constant current is delivered to the vehicle 3 to be rescued for charging. The constant current I = I A1 +I A2 +I A3 +I A4 +I A5 ,I A1 represents the charging current of the first charging vehicle in the rescue convoy 2, I A2 represents the charging current of the second charging vehicle in the rescue convoy 2, I A3 represents the charging current of the third charging vehicle in the rescue convoy 2, I A4 represents the charging current of the fourth charging vehicle in the rescue convoy 2, I A5 represents the charging current of the fifth charging vehicle in the rescue convoy 2, and I represents the charging current after being stabilized by the constant current module 20.

[0062] The switch module 30 is configured to receive the switch control signal sent by the control module 40, and perform switch control according to the switch control signal to connect the circuit between the constant current module 20 and the vehicle 3 to be rescued.

[0063] It should be noted that the switch control signal includes a first switch control signal and a second switch control signal. The switch module 30 performs switch control through the switch control signal to connect the circuit between the current stabilization module 20 and the vehicle to be rescued 3, ensuring that the stabilized current is transmitted to the vehicle to be rescued 3 for charging.

[0064] In this embodiment, by providing a conversion module, a current stabilization module, and a switch module connected in sequence in the fast charging device for fleet rescue, the conversion module, the current stabilization module, and the switch module are respectively connected to the control module; the conversion module is used to receive the input charging current, convert the charging current to obtain a converted current, and transmit the converted current to the current stabilization module; the control module is used to detect the charging requirement of the vehicle to be rescued, generate a current stabilization signal and a switch control signal according to the charging requirement, send the current stabilization signal to the current stabilization module, and send the switch control signal to the switch module; the current stabilization module is used to receive the current stabilization signal sent by the control module, stabilize the converted current according to the current stabilization signal to obtain a stabilized current, and transmit the stabilized current to the vehicle to be rescued for charging; the switch module is used to receive the switch control signal sent by the control module and perform switch control according to the switch control signal to connect the circuit between the current stabilization module and the vehicle to be rescued. By processing the current of the vehicle to be charged with this device, a controllable and variable current can be output to the vehicle to be charged, thereby quickly and reliably charging the vehicle.

[0065] Refer to Figure 3 , Figure 3 which is a schematic structural diagram of the second embodiment of the fast charging device for fleet rescue of the present invention.

[0066] Based on the above first embodiment, in this embodiment, the fast charging device 1 for fleet rescue further includes: a boost module 50, the boost module 50 is respectively connected to the switch module 30 and the control module 40, and the switch control signal includes a first switch control signal; the control module 40 is further used to generate a first switch control signal when the charging requirement of the vehicle to be rescued 3 meets the preset voltage requirement, and transmit the first switch control signal to the switch module 30; the switch module 30 is further used to connect the circuit between the current stabilization module 20 and the boost module 50 according to the first switch control signal; the boost module 50 is used to boost the stabilized current transmitted by the current stabilization module 20 to obtain a target current, and transmit the target current to the vehicle to be rescued 3 for charging.

[0067] It should be understood that the input end of the boost module 50 is connected to the switch module 30, the output end of the boost module 50 is connected to the vehicle to be rescued 3, and the boost module 50 is also wirelessly connected to the control module 40. When the control module 40 detects that the maximum DC charging voltage requirement in the charging requirement of the vehicle to be rescued 3 meets the preset voltage requirement, a first switch control signal is generated. The preset voltage requirement can be 300V, 500V, 800V, etc., and this embodiment does not limit this. This embodiment takes 500V as an example for illustration. When the control module 40 detects that the maximum DC charging voltage requirement of the vehicle to be rescued 3 is greater than the preset voltage requirement of 500V, a first switch control signal is generated and transmitted to the switch module 30.

[0068] In a specific implementation, the switch module 30 connects the circuit between the current stabilization module 20 and the boost module 50 according to the first switch control signal. The boost module 50 receives the stabilized current transmitted by the current stabilization module 30, boosts the stabilized current 30, boosts the charging voltage, obtains the boosted target current, and transmits the target current to the vehicle to be rescued 3 for charging. High-voltage direct current can be output according to the target current, so as to quickly charge and rescue the vehicle to be rescued 3.

[0069] In this embodiment, the switch module 30 includes: a first switch K1 and a second switch K2; the first end of the first switch K1 is connected to the current stabilization module 20, and the second end of the first switch K1 is connected to the boost module 50; the first end of the second switch K2 is connected to the current stabilization module 20, and the second end of the second switch K2 is connected to the vehicle to be rescued 3. The control module 40 is further configured to close the first switch K1 according to the first switch control signal, so that the circuit between the current stabilization module 20 and the boost module 50 is connected through the first switch K1; the control module 40 is further configured to disconnect the second switch K2 according to the first switch control signal, so that the circuit between the current stabilization module 20 and the vehicle to be rescued 3 is disconnected.

[0070] In a specific implementation, the switch module 30 includes a first switch K1 and a second switch K2. The first end of the first switch K1 is connected to the current stabilization module 20, and the second end of the first switch K2 is connected to the boost module 50. After the control module 40 generates the first switch control signal, it controls the first switch K1 to close according to the first switch control signal, and controls the second switch K2 to disconnect according to the first switch control signal, disconnecting the circuit between the current stabilization module 20 and the vehicle to be rescued 3, connecting the circuit between the current stabilization module 20 and the boost module 50. The boost module 50 receives the stabilized current transmitted by the current stabilization module 20, boosts the stabilized current, obtains the target current, and outputs an ultra-high-voltage DC charging current to quickly charge the vehicle to be rescued 3 through the target current.

[0071] In this embodiment, the switch control signal further includes: a second switch control signal. The control module 40 is further configured to generate the second switch control signal when the charging demand of the vehicle 3 to be rescued is less than or equal to the preset voltage demand; the control module 40 is further configured to close the second switch K2 according to the second switch control signal, so that the circuit between the current stabilization module 20 and the vehicle 3 to be rescued is connected through the second switch K2; the control module 40 is further configured to disconnect the first switch K1 according to the second switch control signal, so that the circuit between the current stabilization module 20 and the boost module 50 is disconnected.

[0072] It should be understood that the control module 40 is further configured to generate the second switch control signal when the maximum DC charging voltage in the charging demand of the vehicle 3 to be rescued is less than or equal to the preset voltage demand. For example, if the maximum DC charging voltage of the vehicle 3 to be rescued is 300V and the preset voltage demand is 500V, then the maximum DC charging voltage demand is less than the preset voltage demand, and the second switch control signal is generated. The second switch K2 is controlled to close and the first switch K1 is disconnected through the second switch control signal, the circuit between the current stabilization module 20 and the boost module 50 is disconnected, and the circuit between the current stabilization module 20 and the vehicle 3 to be rescued is connected. The current stabilization module 20 transmits the stabilized current to the vehicle 3 to be rescued for charging, and outputs a DC charging current for charging.

[0073] In this embodiment, a boost module is provided in the fast charging device for fleet rescue. The boost module is respectively connected to the switch module, the control module and the vehicle to be rescued. The switch control signal includes a first switch control signal. The control module is further configured to generate the first switch control signal when the charging demand of the vehicle to be rescued meets the preset voltage demand, and transmit the first switch control signal to the switch module; the switch module is further configured to connect the circuit between the current stabilization module and the boost module according to the first switch control signal; the boost module is configured to boost the stabilized current transmitted by the current stabilization module to obtain a target current, and transmit the target current to the vehicle to be rescued for charging. The switch module can be controlled for switching according to the charging voltage demand of the vehicle to be rescued, and controllable and variable direct current can be output. When the charging voltage demand of the vehicle to be rescued meets the preset voltage demand, the charging voltage is boosted, and the vehicle to be rescued can be quickly charged.

[0074] Refer to Figure 4 , Figure 4 which is a schematic structural diagram of the third embodiment of the fast charging device for fleet rescue of the present invention.

[0075] Based on the above first embodiment, in this embodiment, the fleet rescue fast charging device 1 further includes: a charging input end 60 and a charging output end 70. The charging input end 60 is respectively connected to the charging end and the conversion module 10, and the charging output end 70 is respectively connected to the switch module 30 and the vehicle to be rescued 3. The charging input end 60 is used to receive the charging current input by the charging end and transmit the charging current to the conversion module 10. The charging output end 70 is used to receive the steady current transmitted by the steady current module 20 and transmit the steady current to the vehicle to be rescued 3 for charging.

[0076] In this embodiment, the charging input end 60 is respectively connected to the slow charging AC interface of the rescue fleet 2 and the conversion module 10, and the charging output end 70 is respectively connected to the switch module 30, the boost module 50, and the DC charging interface of the vehicle to be rescued 3. The charging input end 60 is used to receive the charging AC current input by the charging end of the rescue fleet 2, transmit the charging AC current to the conversion module 10, convert the charging AC current into a conversion current, and at the same time transmit the conversion current to the steady current module 20. The steady current module 20 stabilizes the conversion current to obtain a steady current. The charging output end 70 is used to transmit the steady current to the vehicle to be rescued 3 for charging. The charging input end 60 may include 5 charging input ends, and each charging input end is respectively connected to the slow charging AC interface of each of the 5 charging vehicles in the rescue fleet 2. The charging output end 70 is connected to the fast charging DC interface of the vehicle to be rescued 3.

[0077] As Figure 5 shown, Figure 5 is the internal functional logic diagram of the fleet rescue fast charging device in this embodiment. The charging input end 60 may include 5 charging input ends, and each charging input end is respectively connected to the slow charging AC interface of each of the 5 charging vehicles in the rescue fleet 2. The steady current module 20 is respectively connected to each AC / DC conversion unit in the conversion module 10. The output end of the steady current module is also respectively connected to the first end of the first switch K1 in the switch module and the first end of the second switch K2 in the switch module. The second end of the first switch K1 is connected to the boost module 50, and the second end of the second switch K2 is connected to the DC charging interface of the vehicle to be rescued 3. The control module is wirelessly connected to the AC / DC conversion unit, the steady current module, the switch module, the boost module, and the DC charging interface of the vehicle to be rescued 3 for transmitting signals to each module.

[0078] In this embodiment, the control module 40 includes: a detection unit 401 and a control unit 402; the detection unit 401 is configured to generate a first detection signal and detect the connection state between the charging input end 60 and the charging end according to the first detection signal; the detection unit 401 is further configured to detect the connection state between the charging output end 70 and the vehicle to be rescued 3 according to the first detection signal; the detection unit 401 is further configured to generate a second detection signal when the connection state between the charging input end 60 and the charging end is normal and the connection state between the charging output end 70 and the vehicle to be rescued 3 is normal; the detection unit 401 is further configured to detect the charging demand of the vehicle to be rescued 3 according to the second detection signal and transmit the charging demand to the control unit 402; the control unit 402 is configured to generate a first switch control signal to the switch module 30 when the charging demand meets the preset voltage demand.

[0079] It should be noted that the first detection signal refers to a connection state detection signal. The detection unit 401 generates the first detection signal and detects the connection state between the charging input end 60 and the charging end of the rescue fleet 2 according to the first detection signal. After the slow charging interface of the charging end of the rescue fleet 2 is inserted, the detection unit 401 generates the first detection signal, detects the resistance value and current value in the slow charging interface of the charging end of the rescue fleet 2, and judges whether the connection state between the charging input end 60 and the charging end of the rescue fleet 2 is normal according to the current value. When a current is detected between the slow charging interface of the charging end and the charging input end 60, it is proved that the connection state between the charging input end 60 and the charging end of the rescue fleet 2 is normal, and the maximum allowable output current in the charging cable can be judged according to the resistance value in the slow charging interface of the charging end. For example, if the detected resistance value is 680Ω, it is judged that the maximum allowable output of the charging cable is 16A; if the detected resistance value is 220Ω, it is judged that the maximum allowable output of the charging cable is 32A; if the detected resistance value is 100Ω, it is judged that the maximum allowable output of the charging cable is 63A, etc.

[0080] The detection unit 401 is further configured to detect the connection state between the charging output end 70 and the vehicle to be rescued 3 according to the first detection signal after detecting that the fast charging interface of the vehicle to be rescued 3 is inserted. The voltage of the fast charging interface in the vehicle to be rescued 3 can be detected. When the voltage across the fast charging interface in the vehicle to be rescued 3 is the preset voltage value, it is judged that the vehicle to be rescued 3 is normally connected to the charging output end 70. The preset voltage value can be 3V, 4V, etc. This embodiment does not limit this, and this embodiment takes 4V as an example for illustration.

[0081] The detection unit 401 is further configured to generate a second detection signal when it detects that the connection between the charging input end 60 and the rescue fleet 2 is normal and the connection between the charging output end 70 and the vehicle to be rescued 3 is normal, and detect the charging requirement of the vehicle to be rescued 3 according to the second detection signal. When the interfaces between the charging input end 60 and the rescue fleet 2 and between the charging output end 70 and the vehicle to be rescued 3 are connected normally, the control module 40 in the fleet rescue fast charging device 1 controls the fleet rescue fast charging device 1 to perform CAN message interaction with the power battery pack of the vehicle to be rescued 3, obtains the charging requirement of the vehicle to be rescued 3 through the detection unit 401, and transmits the charging requirement to the control unit 402; the control unit 402 is configured to generate a first switch control signal to the switch module 30 when the charging requirement meets the preset voltage requirement.

[0082] In this embodiment, the fleet rescue fast charging device is further provided with: a charging input end and a charging output end. The charging input end is respectively connected to the charging end and the conversion module, and the charging output end is respectively connected to the switch module and the vehicle to be rescued; the charging input end is configured to receive the charging current input by the charging end and transmit the charging current to the conversion module; the charging output end is configured to receive the steady current transmitted by the steady current module and transmit the steady current to the vehicle to be rescued for charging, so that the charging current transmitted by the rescue fleet can be quickly received according to the charging input end, and the steady current can be transmitted to the vehicle to be rescued for charging according to the charging output end, improving the charging efficiency of the vehicle.

[0083] An embodiment of the present invention provides a fleet rescue fast charging method, referring to Figure 6 , Figure 6 is a schematic flowchart of the first embodiment of the fleet rescue fast charging method of the present invention.

[0084] In this embodiment, the fleet rescue fast charging method is applied to the fleet rescue fast charging device described above. The fleet rescue fast charging device includes: a conversion module, a steady current module, and a switch module connected in sequence, and the conversion module, the steady current module, and the switch module are all respectively connected to the control module.

[0085] The fleet rescue fast charging method includes the following steps:

[0086] Step S10: The conversion module receives the input charging current, converts the charging current to obtain a conversion current, and transmits the conversion current to the steady current module.

[0087] It should be noted that the conversion module is used to receive the input charging current, and the charging current is the charging current input by the charging end, which can be the charging end of the rescue team or the charging end of the charging station. This embodiment does not limit this. This embodiment takes the charging end of the rescue team as an example for explanation. The number of vehicles in the rescue team can be 2, 3, 5, etc. This embodiment takes 5 vehicles as an example for explanation. The rescue team includes vehicle A1, vehicle A2, vehicle A3, vehicle 4 and vehicle A5.

[0088] In a specific implementation, the conversion module receives the charging current input by the rescue team, the charging current includes AC current, and the conversion module converts the AC current to obtain a conversion current, the conversion current includes DC current. After determining that the input current is AC current, the AC current of the rescue team is converted into DC current, and the converted DC current is transmitted to the current stabilization module.

[0089] In this embodiment, the conversion module includes: an AC / DC conversion unit, which is used to receive the alternating current input from the charging end, convert the alternating current to obtain a direct current, and transmit the direct current to the current stabilization module.

[0090] It can be understood that the AC / DC conversion unit is used to receive the AC current input from the charging end of the rescue team, convert the AC current into DC current, and transmit the converted DC current to the current stabilization module. The AC / DC conversion unit includes 5 AC / DC conversion units, which convert the AC current provided by each charging vehicle in the rescue team into DC current.

[0091] Step S20: The control module detects the charging demand of the rescue vehicle, generates a steady-current signal and a switch control signal according to the charging demand, and sends the steady-current signal to the steady-current module and sends the switch control signal to the switch module.

[0092] It should be noted that the control module is used to generate a detection signal, and detect the connection relationship with the rescue team through the detection signal. When the connection with the rescue team is normal, the connection relationship with the vehicle to be rescued 3 is detected through the detection signal. When the connection with the vehicle to be rescued is normal, the charging demand of the vehicle to be rescued is obtained, and the charging demand includes the charging current demand and the maximum DC charging voltage demand of the vehicle to be rescued, and a steady current signal is generated according to the charging current demand of the vehicle to be rescued, and the steady current signal is sent to the steady current module for current stabilization.

[0093] In a specific implementation, the control module also generates a switch control signal according to the maximum DC charging voltage requirement of the vehicle to be rescued, and sends the switch control signal to the switch module.

[0094] Step S30: The steady current module receives the steady current signal sent by the control module, stabilizes the converted current according to the steady current signal to obtain a steady current, and conveys the steady current to the vehicle to be rescued for charging.

[0095] In a specific implementation, for example, if the charging current requirement of the vehicle to be rescued is 10A and the current output by each vehicle in the rescue fleet is 3A, then the currents output by 5 vehicles in the rescue fleet can be stabilized and integrated, the current transmitted by the rescue fleet can be rectified into a steady current of 10A, and the steady current is conveyed to the vehicle to be rescued for charging. The steady current I = I A1 +I A2 +I A3 +I A4 +I A5 ,I A1 represents the charging current of the first charging vehicle in the rescue fleet, I A2 represents the charging current of the second charging vehicle in the rescue fleet, I A3 represents the charging current of the third charging vehicle in the rescue fleet, I A4 represents the charging current of the fourth charging vehicle in the rescue fleet, I A5 represents the charging current of the fifth charging vehicle in the rescue fleet, and I represents the charging current after being stabilized by the steady current module 20.

[0096] Step S40: The switch module receives the switch control signal sent by the control module, and performs switch control according to the switch control signal to connect the circuit between the steady current module and the vehicle to be rescued.

[0097] It should be noted that the switch control signal includes a first switch control signal and a second switch control signal. The switch module performs switch control through the switch control signal to connect the circuit between the steady current module and the vehicle to be rescued, ensuring that the steady current is transmitted to the vehicle to be rescued for charging.

[0098] As Figure 7 shown, Figure 7This is a schematic diagram of the overall process of the fast charging method for fleet rescue in this embodiment. Before charging, it is detected whether the connection between the charging input interface and the rescue fleet is normal. When it is detected that the charging input interface is connected normally, the alternating current transmitted by the charging interface of the rescue fleet is input. The AC / DC conversion unit in the conversion module is enabled to convert the alternating current to obtain the converted direct current. Then, the direct current is stabilized by the current stabilization module to obtain the stabilized current I = ∑I(i), which integrates and stabilizes the currents provided by each vehicle in the rescue fleet to obtain the stabilized current. It is also detected whether the charging output interface is connected normally to the vehicle to be rescued. When the charging output interface is connected normally to the vehicle to be rescued, the charging voltage requirement of the vehicle to be rescued is obtained. When the charging voltage requirement of the vehicle to be rescued is greater than the preset voltage requirement, the first switch K1 is controlled to close and the second switch K2 is controlled to open, connecting the current stabilization module to the boost module. The DC boost module is enabled to boost the stabilized current to obtain the target current, and the target direct current is output to charge the vehicle to be rescued. When the charging voltage requirement of the vehicle to be rescued is less than or equal to the preset voltage requirement, the first switch K1 is controlled to open and the second switch K2 is controlled to close, connecting the current stabilization module to the vehicle to be rescued, and directly outputting the stabilized direct current to charge the vehicle to be rescued. The current and voltage can be controllably adjusted according to the charging requirements of the vehicle to be rescued, improving the charging time and efficiency of the vehicle to be rescued.

[0099] In this embodiment, a conversion module, a current stabilization module, and a switch module are sequentially arranged in the fast charging device for fleet rescue, and the conversion module, the current stabilization module, and the switch module are respectively connected to the control module. The conversion module is used to receive the input charging current, convert the charging current to obtain the converted current, and transmit the converted current to the current stabilization module. The control module is used to detect the charging requirement of the vehicle to be rescued, generate a current stabilization signal and a switch control signal according to the charging requirement, send the current stabilization signal to the current stabilization module, and send the switch control signal to the switch module. The current stabilization module is used to receive the current stabilization signal sent by the control module, stabilize the converted current according to the current stabilization signal to obtain the stabilized current, and transmit the stabilized current to the vehicle to be rescued for charging. The switch module is used to receive the switch control signal sent by the control module and perform switch control according to the switch control signal to connect the loop between the current stabilization module and the vehicle to be rescued. By processing the current of the vehicle to be charged with this device, a controllable and variable current can be output to the vehicle to be charged, thereby quickly and reliably charging the vehicle.

[0100] In addition, to achieve the above object, the present invention also proposes a vehicle, and the vehicle is applied to the fast charging device and the fast charging method for fleet rescue described above.

[0101] Since all the technical solutions of the above-mentioned embodiments are adopted in this vehicle, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0102] It should be understood that the above is only for illustration and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can set it according to needs, and the present invention does not make any restrictions on this.

[0103] It should be noted that the above-described work process is only illustrative and does not limit the protection scope of the present invention. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and no restrictions are made here.

[0104] In addition, for the technical details not described in detail in this embodiment, reference can be made to the fleet rescue fast charging method provided in any embodiment of the present invention, which will not be elaborated here.

[0105] In addition, it should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or system. Without further limitations, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0106] The serial numbers of the above-mentioned embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0107] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0108] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A fast charging device for fleet rescue, characterized in that The fleet rescue fast charging device includes: a conversion module, a current stabilizing module, and a switching module that are connected in sequence. The conversion module, the current stabilizing module, and the switching module are respectively connected to a control module. The fleet rescue fast charging device further includes: a boosting module, which is respectively connected to the switching module, the control module, and the vehicle to be rescued. The switching control signal includes a first switching control signal. The fleet rescue fast charging device further includes: a charging input end and a charging output end. The charging input end is respectively connected to the charging end and the conversion module, and the charging output end is respectively connected to the switching module and the vehicle to be rescued. The conversion module is configured to receive the input charging current, convert the charging current to obtain a converted current, and transmit the converted current to the current stabilizing module. The control module is configured to detect the charging requirement of the vehicle to be rescued, generate a current stabilizing signal and a switching control signal according to the charging requirement, send the current stabilizing signal to the current stabilizing module, and send the switching control signal to the switching module. The control module is further configured to generate a first switching control signal and transmit the first switching control signal to the switching module when the charging requirement of the vehicle to be rescued meets the preset voltage requirement. The switching module is further configured to connect the circuit between the current stabilizing module and the boosting module according to the first switching control signal. The boosting module is configured to boost the stabilized current transmitted by the current stabilizing module to obtain a target current, and transmit the target current to the vehicle to be rescued for charging. The control module includes: a detection unit and a control unit. The detection unit is configured to generate a first detection signal and detect the connection status between the charging input end and the charging end according to the first detection signal. The detection unit is further configured to detect the connection status between the charging output end and the vehicle to be rescued according to the first detection signal. The detection unit is further configured to generate a second detection signal when the connection status between the charging input end and the charging end is normal and the connection status between the charging output end and the vehicle to be rescued is normal. The detection unit is further configured to detect the charging requirement of the vehicle to be rescued according to the second detection signal and transmit the charging requirement to the control unit. The control unit is configured to generate a first switching control signal to the switching module when the charging requirement meets the preset voltage requirement. The current stabilizing module is configured to receive the current stabilizing signal sent by the control module, stabilize the converted current according to the current stabilizing signal to obtain a stabilized current, and transmit the stabilized current to the vehicle to be rescued for charging. The switching module is configured to receive the switching control signal sent by the control module and perform switching control according to the switching control signal to connect the circuit between the current stabilizing module and the vehicle to be rescued.

2. The fleet rescue fast charging device according to claim 1, wherein The conversion module includes: an AC / DC conversion unit. The charging current includes an alternating current, and the converted current includes a direct current. The AC / DC conversion unit is configured to receive the alternating current input from the charging end, convert the alternating current to obtain a direct current, and deliver the direct current to the current stabilization module.

3. The fast charging device for fleet rescue according to claim 1, characterized in that, The charging input end is configured to receive the charging current input from the charging end and transmit the charging current to the conversion module; The charging output end is configured to receive the current-stabilized current transmitted by the current stabilization module and transmit the current-stabilized current to the vehicle to be rescued for charging.

4. The fast charging device for fleet rescue according to claim 1, characterized in that, The switch module includes: a first switch and a second switch; The first end of the first switch is connected to the current stabilization module, and the second end of the first switch is connected to the boost module; The first end of the second switch is connected to the current stabilization module, and the second end of the second switch is connected to the vehicle to be rescued.

5. The fleet rescue fast charging device according to claim 4, characterized in that, The control module is further configured to close the first switch according to the first switch control signal, so that the circuit between the current stabilization module and the boost module is connected through the first switch; The control module is further configured to open the second switch according to the first switch control signal, so that the circuit between the current stabilization module and the vehicle to be rescued is disconnected.

6. The fleet rescue fast charging device according to claim 4, characterized in that, The switch control signal further includes: a second switch control signal, and the control module is further configured to generate the second switch control signal when the charging demand of the vehicle to be rescued is less than or equal to the preset voltage demand; The control module is further configured to close the second switch according to the second switch control signal, so that the circuit between the current stabilization module and the vehicle to be rescued is connected through the second switch; The control module is further configured to open the first switch according to the second switch control signal, so that the circuit between the current stabilization module and the boost module is disconnected.

7. A fast charging method for fleet rescue, characterized in that, The fleet rescue fast charging method is applied to the fleet rescue fast charging device according to any one of claims 1-6 above. The fleet rescue fast charging device includes: a conversion module, a current stabilization module, and a switch module connected in sequence, and the conversion module, the current stabilization module, and the switch module are respectively connected to the control module; the fleet rescue fast charging device further includes: a boost module, the boost module is respectively connected to the switch module, the control module, and the vehicle to be rescued, and the switch control signal includes a first switch control signal; the fleet rescue fast charging device further includes: a charging input end and a charging output end, the charging input end is respectively connected to the charging end and the conversion module, and the charging output end is respectively connected to the switch module and the vehicle to be rescued; The conversion module receives the input charging current, converts the charging current to obtain a converted current, and delivers the converted current to the current stabilization module; The control module detects the charging demand of the vehicle to be rescued, generates a current stabilization signal and a switch control signal according to the charging demand, sends the current stabilization signal to the current stabilization module, and sends the switch control signal to the switch module; When the charging demand of the vehicle to be rescued meets the preset voltage demand, the control module generates a first switch control signal and transmits the first switch control signal to the switch module; The switch module connects the circuit between the current stabilizing module and the boost module according to the first switch control signal; The boost module boosts the steady current transmitted by the current stabilizing module to obtain a target current, and transmits the target current to the vehicle to be rescued for charging; The control module includes: a detection unit and a control unit; The detection unit generates a first detection signal and detects the connection state between the charging input end and the charging end according to the first detection signal; The detection unit detects the connection state between the charging output end and the vehicle to be rescued according to the first detection signal; When the connection state between the charging input end and the charging end is normal and the connection state between the charging output end and the vehicle to be rescued is normal, the detection unit generates a second detection signal; The detection unit detects the charging demand of the vehicle to be rescued according to the second detection signal and transmits the charging demand to the control unit; When the charging demand meets the preset voltage demand, the control unit generates a first switch control signal to the switch module; The current stabilizing module receives the steady current signal sent by the control module, stabilizes the converted current according to the steady current signal to obtain a steady current, and conveys the steady current to the vehicle to be rescued for charging; The switch module receives the switch control signal sent by the control module and performs switch control according to the switch control signal to connect the circuit between the current stabilizing module and the vehicle to be rescued.

8. A vehicle, characterized in that, The vehicle is applied to the fleet rescue fast charging device according to any one of claims 1-6 above and the fleet rescue fast charging method according to claim 7 above.

Images