Charging system, charging control method, controller and vehicle

Abstract

The present disclosure relates to a charging system, a charging control method, a controller and a vehicle, and relates to the field of vehicle technology. The charging system includes: a charging circuit, a power battery and a controller, and the charging circuit is connected to the controller. The charging circuit includes: a switch assembly and an energy storage module, and the switch assembly includes a first switch assembly and a second switch assembly. The power battery is suitable for being connected to a charging pile through a first switch assembly, and the power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly. The high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly. The controller is used to: control the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery. The present disclosure can provide stable direct current for the high-voltage load, thereby improving the durability and service life of the high-voltage load.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular, to a charging system, a charging control method, a controller and a vehicle. Background Art

[0002] At present, the output voltage of most charging piles on the market is 500V~750V, which leads to certain problems in the charging matching of some low-voltage platform electric vehicles. Electric vehicles on low-voltage platforms are charged by reducing the output voltage of the charging pile during charging. During the process of step-down charging of electric vehicles, the high-voltage load uses the output current of the charging pile. Since the output current of the charging pile fluctuates greatly during the step-down charging process, it may have a certain impact on the durability and service life of the high-voltage load. Summary of the invention

[0003] An object of the present disclosure is to provide a charging system, a charging control method, a controller and a vehicle for improving the durability and service life of a high-voltage load.

[0004] According to a first aspect of an embodiment of the present disclosure, a charging system is provided, the charging system comprising: a charging circuit, a power battery and a controller, the charging circuit being connected to the controller; the charging circuit comprising: a switch assembly and an energy storage module, the switch assembly comprising a first switch assembly and a second switch assembly;

[0005] The power battery is suitable for being connected to the charging pile through the first switch assembly, and the power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly; the high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly;

[0006] The controller is used to control the switch assembly and the energy storage module to reduce the voltage of the power battery and charge it through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery.

[0007] Optionally, the energy storage module includes: an inductor and a three-phase inverter circuit;

[0008] The positive electrode of the power battery is connected to the upper bridge arm of the three-phase inverter circuit through the first switch component, the negative electrode of the power battery is connected to the lower bridge arm of the three-phase inverter circuit, the midpoint of the bridge arm of the three-phase inverter circuit is connected to the first end of the inductor, and the second end of the inductor is connected to the power battery through the second switch component;

[0009] The first end of the high-voltage load is connected to the positive electrode of the power battery through the first switch component, and the second end of the high-voltage load is connected to the negative electrode of the power battery.

[0010] Optionally, the charging circuit further includes: a first capacitor; the first capacitor is connected to the power battery through the first switch component.

[0011] Optionally, the charging circuit also includes: a second capacitor and a first switch, the first end of the first switch is connected to the second end of the inductor, the second end of the first switch is connected to the first end of the second capacitor, and the second end of the second capacitor is connected to the charging pile.

[0012] Optionally, the second switch component includes: a second switch; a first end of the second switch is connected to the power battery, and a second end of the second switch is connected to the second end of the inductor.

[0013] Optionally, the first switch component includes: a third switch, a fourth switch and a fifth switch, and the charging circuit further includes: a pre-charging resistor;

[0014] The first end of the pre-charging resistor is connected to the positive electrode of the power battery, the second end of the pre-charging resistor is connected to the first end of the third switch, the second end of the third switch is connected to the first end of the fifth switch, and the second end of the fifth switch is suitable for connecting to the charging pile;

[0015] The first end of the fourth switch is connected to the positive electrode of the power battery, the second end of the fourth switch is connected to the first end of the fifth switch, and the first end of the fifth switch is also connected to the high-voltage load.

[0016] Optionally, the charging circuit further includes: a sixth switch, a seventh switch and an eighth switch;

[0017] The first end of the sixth switch is connected to the second end of the fifth switch, and the second end of the sixth switch is suitable for connecting to a charging pile;

[0018] The first end of the seventh switch is connected to the negative electrode of the power battery, the second end of the seventh switch is connected to the first end of the eighth switch, and the second end of the eighth switch is connected to the charging pile.

[0019] Optionally, the first switch component includes: a third switch, a fourth switch, a ninth switch and a tenth switch, and the charging circuit further includes: a pre-charging resistor;

[0020] The first end of the pre-charging resistor is connected to the positive electrode of the power battery, the second end of the pre-charging resistor is connected to the first end of the third switch, the second end of the third switch is connected to the first end of the ninth switch, and the second end of the ninth switch is connected to the high-voltage load;

[0021] A first end of the fourth switch is connected to the positive electrode of the power battery, and a second end of the fourth switch is connected to the first end of the ninth switch;

[0022] A first end of the tenth switch is connected to the positive electrode of the power battery, and a second end of the tenth switch is connected to the second end of the ninth switch.

[0023] Optionally, the charging circuit further includes: a sixth switch, a seventh switch and an eighth switch;

[0024] The first end of the sixth switch is connected to the second end of the fourth switch, and the second end of the sixth switch is suitable for connecting to a charging pile;

[0025] The first end of the seventh switch is connected to the negative electrode of the power battery, the second end of the seventh switch is connected to the first end of the eighth switch, and the second end of the eighth switch is suitable for being connected to the charging pile.

[0026] Optionally, the controller is specifically used for:

[0027] The steps of closing the first switch, the second switch, the fourth switch, the sixth switch, the seventh switch, the eighth switch and the upper bridge of the three-phase inverter circuit, and disconnecting the third switch, the fifth switch and the lower bridge of the three-phase inverter circuit, and the step of closing the first switch, the second switch, the fourth switch, the seventh switch and the lower bridge of the three-phase inverter circuit, and disconnecting the third switch, the fifth switch, the sixth switch, the eighth switch and the upper bridge of the three-phase inverter circuit are alternately performed according to the target duty cycle, so as to step down charge the power battery and supply power to the high-voltage load through the power battery.

[0028] Optionally, the controller is further configured to:

[0029] The first switch, the third switch, the fifth switch, the seventh switch and the switch tube of the upper bridge of the three-phase inverter circuit are closed, and the second switch, the fourth switch, the sixth switch, the eighth switch and the switch tube of the lower bridge of the three-phase inverter circuit are opened to pre-charge the high-voltage load, the first capacitor and the second capacitor through the power battery.

[0030] Optionally, the controller is specifically used for:

[0031] The steps of closing the first switch, the second switch, the sixth switch, the seventh switch, the eighth switch, the tenth switch and the upper bridge of the three-phase inverter circuit, and opening the third switch, the fourth switch, the ninth switch and the lower bridge of the three-phase inverter circuit, and closing the first switch, the second switch, the seventh switch, the tenth switch and the lower bridge of the three-phase inverter circuit, and opening the third switch, the fourth switch, the sixth switch, the eighth switch, the ninth switch and the upper bridge of the three-phase inverter circuit are performed alternately according to the target duty cycle, so as to step down charge the power battery and supply power to the high-voltage load through the power battery.

[0032] Optionally, the controller is further configured to:

[0033] The first switch, the third switch, the seventh switch, the tenth switch and the switch tube of the upper bridge of the three-phase inverter circuit are closed, and the second switch, the fourth switch, the sixth switch, the eighth switch, the ninth switch and the switch tube of the lower bridge of the three-phase inverter circuit are opened to pre-charge the high-voltage load, the first capacitor and the second capacitor through the power battery.

[0034] According to a second aspect of an embodiment of the present disclosure, a charging control method is provided, the method comprising:

[0035] Controlling the switch assembly and the energy storage module to charge the power battery at a reduced voltage through the charging pile and the energy storage module; and

[0036] The power battery is used to supply power to the high voltage load.

[0037] Optionally, the controlling the switch assembly and the energy storage module to charge the power battery at a reduced voltage through the charging pile and the energy storage module further comprises:

[0038] The steps of controlling the switch component and the energy storage module so that the charging pile charges the power battery and the energy storage module in series, and controlling the switch component and the energy storage module so that the energy storage module charges the power battery are alternately performed according to a preset cycle to reduce the voltage of the power battery.

[0039] Optionally, the method further comprises:

[0040] The switch assembly and the energy storage module are controlled so that the power battery pre-charges the high-voltage load.

[0041] According to a third aspect of an embodiment of the present disclosure, a controller is provided, including:

[0042] a memory having a computer program stored thereon;

[0043] A processor is used to execute the computer program in the memory to implement the steps of the method described in the second aspect of the embodiment of the present disclosure.

[0044] According to a fourth aspect of an embodiment of the present disclosure, a vehicle is provided, wherein the vehicle includes the controller described in the third aspect of the embodiment of the present disclosure, or the charging system described in the first aspect of the embodiment of the present disclosure.

[0045] Through the above technical solution, the charging system in the present disclosure includes: a charging circuit, a power battery and a controller. The charging circuit is connected to the controller. The charging circuit includes: a switch assembly, a high-voltage load and an energy storage module. The switch assembly includes a first switch assembly and a second switch assembly. The power battery is connected to the charging pile through the first switch assembly. The power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly. The high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly. The controller controls the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery. When the present disclosure steps down and charges the vehicle, the high-voltage load is supplied with power by the power battery, and a stable direct current can be provided to the high-voltage load, so as to avoid the current fluctuation of the charging pile from damaging the devices in the high-voltage load, thereby improving the durability and service life of the high-voltage load.

[0046] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide further understanding of the present disclosure and constitute a part of the specification. They are used to explain the present disclosure together with the following detailed description, but do not constitute a limitation of the present disclosure.

[0048] Figure 1 is a block diagram of a charging system according to an exemplary embodiment.

[0049] Figure 2 is a block diagram of another charging system according to an exemplary embodiment.

[0050] Figure 3 is a block diagram of another charging system according to an exemplary embodiment.

[0051] Figure 4 is a block diagram of another charging system according to an exemplary embodiment.

[0052] Figure 5 is a schematic diagram of a charging system according to an exemplary embodiment.

[0053] Figure 6 is based on Figure 5 A schematic diagram of pre-charging of a charging system shown in an embodiment.

[0054] Figure 7 is based on Figure 5 A schematic diagram of voltage reduction charging of a charging system shown in an embodiment.

[0055] Figure 8 is based on Figure 5 A schematic diagram of voltage reduction charging of another charging system shown in an embodiment.

[0056] Fig. 9 is based on Figure 5 A schematic diagram of direct charging of a charging system shown in an embodiment.

[0057] Fig.10 is a schematic diagram of another charging system according to an exemplary embodiment.

[0058] Fig.11 is a schematic diagram of another charging system according to an exemplary embodiment.

[0059] Fig.12 is based on Fig.10 A schematic diagram of pre-charging of a charging system shown in an embodiment.

[0060] Fig.13 is based on Fig.10 A schematic diagram of voltage reduction charging of a charging system shown in an embodiment.

[0061] Fig.14 is based on Fig.10 A schematic diagram of voltage reduction charging of another charging system shown in an embodiment.

[0062] Fig.15 is based on Fig.10 A schematic diagram of direct charging of a charging system shown in an embodiment.

[0063] Fig.16 The figure is a flow chart of a charging control method according to an exemplary embodiment.

[0064] Fig.17 is a block diagram of a controller according to an exemplary embodiment.

[0065] Fig.18 is a block diagram of a vehicle according to an exemplary embodiment.

[0066] Fig.19 is a block diagram of another vehicle according to an exemplary embodiment.

[0067] Description of Reference Numerals

[0068] Charging system 100; charging circuit 101; power battery 102; controller 103; switch component 1011; energy storage module 1012; first switch component 1011a; second switch component 1011b; processor 1031; memory 1032; multimedia component 1033; I / O interface 1034; communication component 1035; inductor L; three-phase inverter circuit VT; first capacitor C1; second capacitor C2; first switch K1; second switch K2; third switch K3; fourth switch K4; fifth switch K5; sixth switch K6; seventh switch K7; eighth switch K8; ninth switch K9; tenth switch K10; pre-charging resistor R; charging pile 200; high voltage load 300; vehicle 400. DETAILED DESCRIPTION

[0069] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0070] Figure 1 is a block diagram of a charging system according to an exemplary embodiment. Figure 1 As shown, the charging system 100 includes: a charging circuit 101, a power battery 102 and a controller 103, and the charging circuit 101 is connected to the controller 103. The charging circuit 101 includes: a switch component 1011 and an energy storage module 1012, and the switch component 1011 includes a first switch component 1011a and a second switch component 1011b.

[0071] The power battery 102 is suitable for connecting to the charging pile 200 through the first switch component 1011a. The power battery 102 is also connected to one end of the energy storage module 1012 through the first switch component 1011a, and is connected to the other end of the energy storage module 1012 through the second switch component 1011b. The high-voltage load 300 is connected to the power battery 102 and the charging pile 200 respectively through the first switch component 1011a.

[0072] The controller 103 is used to control the switch assembly 1011 and the energy storage module 1012 to step down and charge the power battery 102 through the charging pile 200 and the energy storage module 1012 , and to supply power to the high-voltage load 300 through the power battery 102 .

[0073] For example, the charging mode of the vehicle may generally include a boost charging mode, a direct charging mode, and a buck charging mode. When the voltage of the power battery 102 of the vehicle is less than the output voltage of the charging pile, the power battery 102 may be charged in the buck charging mode. In the buck charging mode, the controller 103 may control the switch assembly 1011 and the energy storage module 1012 to buck charge the power battery 102 through the charging pile 200 and the energy storage module 1012.

[0074] Since the high-voltage load 300 is respectively connected to the power battery 102 and the charging pile 200 through the first switch component 1011a, when the vehicle is step-down charged, the connection between the high-voltage load 300 and the charging pile 200 can be disconnected by controlling the switching state of the first switch component 1011a, and the high-voltage load 300 and the power battery 102 can be connected, so that the power battery 102 can power the high-voltage load 300, and the power battery 102 can provide stable direct current for the high-voltage load 300, thereby avoiding current fluctuations of the charging pile 200 from damaging the devices in the high-voltage load 300, thereby improving the durability and service life of the high-voltage load 300.

[0075] In summary, the charging system in the present disclosure includes: a charging circuit, a power battery and a controller. The charging circuit is connected to the controller. The charging circuit includes: a switch assembly, a high-voltage load and an energy storage module. The switch assembly includes a first switch assembly and a second switch assembly. The power battery is connected to the charging pile through the first switch assembly. The power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly. The high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly. The controller controls the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery. When the present disclosure steps down and charges the vehicle, the high-voltage load is supplied with power by the power battery, and a stable direct current can be provided to the high-voltage load, so as to avoid the current fluctuation of the charging pile from damaging the devices in the high-voltage load, thereby improving the durability and service life of the high-voltage load.

[0076] Figure 2 is a block diagram of another charging system according to an exemplary embodiment. Figure 2 As shown, the energy storage module 1012 includes: an inductor L and a three-phase inverter circuit VT.

[0077] The positive electrode of the power battery 102 is connected to the upper bridge arm of the three-phase inverter circuit VT through the first switch component 1011a, the negative electrode of the power battery 102 is connected to the lower bridge arm of the three-phase inverter circuit VT, the midpoint of the bridge arm of the three-phase inverter circuit VT is connected to the first end of the inductor L, and the second end of the inductor L is connected to the power battery 102 through the second switch component 1011b.

[0078] A first end of the high-voltage load 300 is connected to the positive electrode of the power battery 102 through the first switch component 1011 a , and a second end of the high-voltage load 300 is connected to the negative electrode of the power battery 102 .

[0079] For example, the inductor L in the embodiment of the present disclosure can reuse the inductor L of the motor. The freewheeling characteristics of the inductor L can be used to reduce the output voltage of the charging pile 200 to charge the power battery 102, thereby improving the matching degree between the electric vehicle on the low-voltage platform and the charging pile 200 and adapting to more charging piles 200.

[0080] The second end of the inductor L can be connected to the positive electrode of the power battery 102 through the second switch component 1011b, and the second end of the inductor L can also be connected to the negative electrode of the power battery 102 through the second switch component 1011b.

[0081] Figure 3 is a block diagram of another charging system according to an exemplary embodiment. Figure 3 As shown, the charging circuit 101 further includes: a first capacitor C1. The first capacitor C1 is connected to the power battery 102 via a first switch component 1011a.

[0082] Figure 4 is a block diagram of another charging system according to an exemplary embodiment. Figure 4 As shown, the charging circuit 101 also includes: a second capacitor C2 and a first switch K1, the first end of the first switch K1 is connected to the second end of the inductor L, the second end of the first switch K1 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is suitable for connecting to the charging pile 200.

[0083] For example, the embodiment of the present disclosure uses the second capacitor C2 to suppress the ripple current generated during the step-down charging process. At the same time, the second capacitor C2 is connected in parallel with the power battery 102 to protect the power battery 102, prevent the peak current in the charging process from affecting the battery pack and other high-voltage devices, and reduce the loss of the devices.

[0084] Figure 5 is a schematic diagram of a charging system according to an exemplary embodiment. Figure 5 As shown, the second switch component 1011b includes: a second switch K2. A first end of the second switch K2 is connected to the power battery 102, and a second end of the second switch K2 is connected to a second end of the inductor L.

[0085] The first switch component 1011a includes: a third switch K3, a fourth switch K4 and a fifth switch K5, and the charging circuit 101 also includes: a pre-charging resistor R.

[0086] The first end of the pre-charging resistor R is connected to the positive electrode of the power battery 102 , the second end of the pre-charging resistor R is connected to the first end of the third switch K3 , the second end of the third switch K3 is connected to the first end of the fifth switch K5 , and the second end of the fifth switch K5 is suitable for connecting to the charging pile 200 .

[0087] A first end of the fourth switch K4 is connected to the positive electrode of the power battery 102 , a second end of the fourth switch K4 is connected to a first end of the fifth switch K5 , and a first end of the fifth switch K5 is also connected to the high-voltage load 300 .

[0088] The charging circuit 101 further includes a sixth switch K6 , a seventh switch K7 and an eighth switch K8 .

[0089] A first end of the sixth switch K6 is connected to a second end of the fifth switch K5 , and a second end of the sixth switch K6 is suitable for being connected to the charging pile 200 .

[0090] A first end of the seventh switch K7 is connected to the negative electrode of the power battery 102 , a second end of the seventh switch K7 is connected to a first end of the eighth switch K8 , and a second end of the eighth switch K8 is suitable for being connected to the charging pile 200 .

[0091] In some embodiments, reference Figure 5 In the charging system 100 shown, the controller 103 is also used to: close the first switch K1, the third switch K3, the fifth switch K5, the seventh switch K7 and the switch tube of the upper bridge of the three-phase inverter circuit VT, and disconnect the second switch K2, the fourth switch K4, the sixth switch K6, the eighth switch K8 and the switch tube of the lower bridge of the three-phase inverter circuit VT, so as to pre-charge the high-voltage load 300, the first capacitor C1 and the second capacitor C2 through the power battery 102.

[0092] For example, Figure 6 yes Figure 5 The pre-charging schematic diagram of the charging system 100 shown in the figure, in order to avoid excessive charging current from damaging the high-voltage load 300, the first capacitor C1 and the second capacitor C2, before the power battery 102 is officially charged, the first switch K1, the third switch K3, the fifth switch K5, the seventh switch K7 and the switch tube of the upper bridge of the three-phase inverter circuit VT can be closed first, and the second switch K2, the fourth switch K4, the sixth switch K6, the eighth switch K8 and the switch tube of the lower bridge of the three-phase inverter circuit VT can be disconnected, so as to pre-charge the high-voltage load 300, the first capacitor C1 and the second capacitor C2 through the power battery 102.

[0093] In other embodiments, reference Figure 5In the charging system 100 shown in the figure, the controller 103 is specifically used to: alternately execute the steps of closing the first switch K1, the second switch K2, the fourth switch K4, the sixth switch K6, the seventh switch K7, the eighth switch K8 and the upper bridge of the three-phase inverter circuit VT, and disconnecting the third switch K3, the fifth switch K5 and the lower bridge of the three-phase inverter circuit VT, and the steps of closing the first switch K1, the second switch K2, the fourth switch K4, the seventh switch K7 and the lower bridge of the three-phase inverter circuit VT, and disconnecting the third switch K3, the fifth switch K5, the sixth switch K6, the eighth switch K8 and the upper bridge of the three-phase inverter circuit VT according to the target duty cycle, so as to step down charge the power battery 102 and supply power to the high-voltage load 300 through the power battery 102.

[0094] For example, Figure 7 and Figure 8 yes Figure 5 The schematic diagram of the step-down charging of the charging system 100 is shown in FIG. Figure 7 For timing 1, Figure 8 It is time sequence 2.

[0095] Before step-down charging, Figure 6 The pre-charging diagram of the first capacitor C1 is first pre-charged with the high voltage load 300, and then Figure 7 In the timing 1 of the buck charging schematic diagram, the first switch K1, the second switch K2, the fourth switch K4, the sixth switch K6, the seventh switch K7, the eighth switch K8 and the upper bridge of the three-phase inverter circuit VT are closed, and the third switch K3, the fifth switch K5 and the lower bridge of the three-phase inverter circuit VT are disconnected. At this time, the current provided by the charging pile 200 flows through the three-phase inverter bridge and the inductor L to charge the power battery 102. The inductor L and the power battery 102 are connected in series, and the charging voltage of the power battery 102 is lower than the output voltage of the charging pile 200, achieving the purpose of voltage reduction. The high-voltage load 300 is mounted on the power battery 102 through the fourth switch K4 and the seventh switch K7, and the fifth switch K5 remains disconnected. The high-voltage load 300 is not mounted on the charging pile 200.

[0096] Then according to Figure 8 In the timing 2 of the buck charging schematic diagram, the first switch K1, the second switch K2, the fourth switch K4, the seventh switch K7 and the lower bridge of the three-phase inverter circuit VT are closed, and the third switch K3, the fifth switch K5, the sixth switch K6, the eighth switch K8 and the upper bridge of the three-phase inverter circuit VT are disconnected. The freewheeling characteristic of the inductor L to keep its own current unchanged is used to charge the power battery 102. At this time, the voltage for charging the power battery 102 is provided by the inductor L, which is still lower than the output voltage of the charging pile 200, and the buck charging process continues.

[0097] During the step-down charging process, the battery pack can be step-down charged by repeating the processes of sequence 1 and sequence 2 according to the target duty cycle, wherein the target duty cycle can be a preset duty cycle or a duty cycle determined based on the voltage of the power battery 102 and the output voltage of the charging pile 200, and the present disclosure does not make any specific limitations on this.

[0098] The second capacitor C2 plays a role in suppressing ripple current and protecting the power battery 102 and other high-voltage devices during the entire step-down charging process.

[0099] When the power battery 102 is stepped down for charging, through the control of the fifth switch K5, the high-voltage load 300 of the electric vehicle is not mounted on the charging pile 200, but is powered by the power battery 102, which can provide a stable current to the high-voltage load 300, reduce the impact of the impact current on each component in the high-voltage load 300, and extend the durability and service life of the components in the high-voltage load 300.

[0100] In other embodiments, Fig. 9 yes Figure 5 The direct charging schematic diagram of the charging system 100 shown in FIG. Figure 6 The pre-charging schematic diagram shown pre-charges the high-voltage load 300 and the first capacitor C1, then disconnects the first switch K1 and the third switch K3, and closes the fourth switch K4, the sixth switch K6 and the eighth switch K8, thereby directly charging the power battery 102 through the charging pile 200.

[0101] Fig.10 is a schematic diagram of another charging system according to an exemplary embodiment. Fig.10 As shown, the second switch component 1011b includes: a second switch K2. A first end of the second switch K2 is connected to the power battery 102, and a second end of the second switch K2 is connected to a second end of the inductor L.

[0102] The first switch component 1011a includes: a third switch K3, a fourth switch K4, a ninth switch K9 and a tenth switch K10, and the charging circuit 101 also includes: a pre-charging resistor R.

[0103] The first end of the pre-charging resistor R is connected to the positive electrode of the power battery 102 , the second end of the pre-charging resistor R is connected to the first end of the third switch K3 , the second end of the third switch K3 is connected to the first end of the ninth switch K9 , and the second end of the ninth switch K9 is suitable for connecting to the high-voltage load 300 .

[0104] A first end of the fourth switch K4 is connected to the positive electrode of the power battery 102 , and a second end of the fourth switch K4 is connected to a first end of the ninth switch K9 .

[0105] A first end of the tenth switch K10 is connected to the positive electrode of the power battery 102 , and a second end of the tenth switch K10 is suitable for being connected to a second end of the ninth switch K9 .

[0106] The charging circuit 101 further includes a sixth switch K6 , a seventh switch K7 and an eighth switch K8 .

[0107] A first end of the sixth switch K6 is connected to the second end of the fourth switch K4 , and a second end of the sixth switch K6 is connected to the charging pile.

[0108] A first end of the seventh switch K7 is connected to the negative electrode of the power battery 102 , a second end of the seventh switch K7 is connected to a first end of the eighth switch K8 , and a second end of the eighth switch K8 is connected to the charging pile.

[0109] Fig.11 is a schematic diagram of another charging system according to an exemplary embodiment. Fig.11 As shown, Fig.10 The second switch K2 in can also be connected to the negative electrode of the power battery 102.

[0110] In some embodiments, reference Fig.10 In the charging system shown, the controller 103 is also used to: close the first switch K1, the third switch K3, the seventh switch K7, the tenth switch K10 and the switch tube of the upper bridge of the three-phase inverter circuit VT, and disconnect the second switch K2, the fourth switch K4, the sixth switch K6, the eighth switch K8, the ninth switch K9 and the switch tube of the lower bridge of the three-phase inverter circuit VT, so as to pre-charge the high-voltage load 300, the first capacitor C1 and the second capacitor C2 through the power battery 102.

[0111] For example, Fig.12 yes Fig.10 As shown in the pre-charging schematic diagram of the charging system, in order to avoid excessive charging current from damaging the high-voltage load 300, the first capacitor C1 and the second capacitor C2, before the power battery 102 is officially charged, the first switch K1, the third switch K3, the seventh switch K7, the tenth switch K10 and the switch tube of the upper bridge of the three-phase inverter circuit VT can be closed, and the second switch K2, the fourth switch K4, the sixth switch K6, the eighth switch K8, the ninth switch K9 and the switch tube of the lower bridge of the three-phase inverter circuit VT can be disconnected, thereby pre-charging the high-voltage load 300, the first capacitor C1 and the second capacitor C2 through the power battery 102.

[0112] In other embodiments, reference Fig.10In the charging system shown in the figure, the controller 103 is specifically used to: alternately execute the steps of closing the first switch K1, the second switch K2, the sixth switch K6, the seventh switch K7, the eighth switch K8, the tenth switch K10 and the upper bridge of the three-phase inverter circuit VT, and disconnecting the third switch K3, the fourth switch K4, the ninth switch K9 and the lower bridge of the three-phase inverter circuit VT according to the target duty cycle, and closing the first switch K1, the second switch K2, the seventh switch K7, the tenth switch K10 and the lower bridge of the three-phase inverter circuit VT, and disconnecting the third switch K3, the fourth switch K4, the sixth switch K6, the eighth switch K8, the ninth switch K9 and the upper bridge of the three-phase inverter circuit VT, so as to step down charge the power battery 102 and supply power to the high-voltage load 300 through the power battery 102.

[0113] For example, Fig.13 and Fig.14 yes Fig.10 The step-down charging schematic diagram of the charging system shown in the figure is Fig.13 For timing 1, Fig.14 It is time sequence 2.

[0114] Before step-down charging, Fig.12 The pre-charging diagram of the first capacitor C1 is first pre-charged with the high voltage load 300, and then Fig.13 In the timing 1 of the buck charging schematic diagram, the first switch K1, the second switch K2, the sixth switch K6, the seventh switch K7, the eighth switch K8, the tenth switch K10 and the upper bridge of the three-phase inverter circuit VT are closed, and the third switch K3, the fourth switch K4, the ninth switch K9 and the lower bridge of the three-phase inverter circuit VT are disconnected. At this time, the current provided by the charging pile 200 flows through the three-phase inverter bridge VT and the inductor L to charge the power battery 102. The inductor L and the power battery 102 are connected in series, and the charging voltage of the power battery 102 is lower than the output voltage of the charging pile 200, achieving the purpose of voltage reduction. The high-voltage load 300 is mounted on the power battery 102 through the tenth switch and the seventh switch K7, and the ninth switch remains disconnected, and the high-voltage load 300 is not mounted on the charging pile 200.

[0115] Then according to Fig.14 In the timing 2 of the buck charging schematic diagram, the first switch K1, the second switch K2, the seventh switch K7, the tenth switch K10 and the lower bridge of the three-phase inverter circuit VT are closed, and the third switch K3, the fourth switch K4, the sixth switch K6, the eighth switch K8, the ninth switch K9 and the upper bridge of the three-phase inverter circuit VT are disconnected. The freewheeling characteristic of the inductor L that keeps its own current unchanged is used to charge the power battery 102. At this time, the voltage for charging the power battery 102 is provided by the inductor L, which is still lower than the output voltage of the charging pile 200, and the buck charging process continues.

[0116] During the step-down charging process, the battery pack can be step-down charged by repeating the processes of sequence 1 and sequence 2 according to the target duty cycle, wherein the target duty cycle can be a preset duty cycle or a duty cycle determined based on the voltage of the power battery 102 and the output voltage of the charging pile 200, and the present disclosure does not make any specific limitations on this.

[0117] The second capacitor C2 plays a role in suppressing ripple current and protecting the power battery 102 and other high-voltage devices during the entire step-down charging process.

[0118] When the power battery 102 is stepped down for charging, through the control of the eighth switch K8, the high-voltage load 300 of the electric vehicle is not mounted on the charging pile 200, but is powered by the power battery 102, which can provide a stable current to the high-voltage load 300, reduce the impact of the impact current on each component in the high-voltage load 300, and extend the durability and service life of the components in the high-voltage load 300.

[0119] In other embodiments, Fig.15 yes Fig.10 The direct charging schematic diagram of the charging system shown in the figure. Before direct charging, follow the Fig.12 The pre-charging schematic diagram shown pre-charges the high-voltage load 300 and the first capacitor C1, then disconnects the first switch K1, the third switch K3 and the tenth switch K10, and closes the fourth switch K4, the sixth switch K6 and the eighth switch K8, thereby directly charging the power battery 102 through the charging pile 200.

[0120] The step-down charging method in the disclosed embodiment can also be used for vehicles on a high-voltage platform to achieve high-power charging, utilizing the constant power area of ​​the charging pile to increase the charging current, thereby improving the charging efficiency.

[0121] In summary, the charging system in the present disclosure includes: a charging circuit, a power battery and a controller. The charging circuit is connected to the controller. The charging circuit includes: a switch assembly, a high-voltage load and an energy storage module. The switch assembly includes a first switch assembly and a second switch assembly. The power battery is connected to the charging pile through the first switch assembly. The power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly. The high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly. The controller controls the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery. When the present disclosure steps down and charges the vehicle, the high-voltage load is supplied with power by the power battery, and a stable direct current can be provided to the high-voltage load, so as to avoid the current fluctuation of the charging pile from damaging the devices in the high-voltage load, thereby improving the durability and service life of the high-voltage load.

[0122] Fig.16 is a flow chart of a charging control method according to an exemplary embodiment. Fig.16 As shown, the method may include the following steps.

[0123] Step S301, controlling the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module.

[0124] Step S302, supplying power to the high voltage load via the power battery.

[0125] For example, the charging control method in the embodiment of the present disclosure can be applied to the charging system in the embodiment of the present disclosure. Among them, the charging system 100 may include: a charging circuit 101, a power battery 102 and a controller 103, and the charging circuit 101 may be connected to the controller 103. The charging circuit 101 may include: a switch component 1011, a high-voltage load 300 and an energy storage module 1012, and the switch component 1011 may include a first switch component 1011a and a second switch component 1011b. The power battery 102 can be connected to the charging pile 200 through the first switch component 1011a, and the power battery 102 can also be connected to one end of the energy storage module 1012 through the first switch component 1011a, and connected to the other end of the energy storage module 1012 through the second switch component 1011b. The high-voltage load 300 can be connected to the power battery 102 and the charging pile 200 respectively through the first switch component 1011a.

[0126] The charging mode of the vehicle may generally include a boost charging mode, a direct charging mode, and a buck charging mode. When the voltage of the power battery 102 of the vehicle is less than the output voltage of the charging pile, the power battery 102 may be charged in the buck charging mode. In the buck charging mode, the controller 103 may control the switch assembly 1011 and the energy storage module 1012 to buck charge the power battery 102 through the charging pile 200 and the energy storage module 1012.

[0127] Since the high-voltage load 300 is respectively connected to the power battery 102 and the charging pile 200 through the first switch component 1011a, when the vehicle is step-down charged, the connection between the high-voltage load 300 and the charging pile 200 can be disconnected by controlling the switching state of the first switch component 1011a, and the high-voltage load 300 and the power battery 102 can be connected, so that the power battery 102 can power the high-voltage load 300, and the power battery 102 can provide stable direct current for the high-voltage load 300, thereby avoiding current fluctuations of the charging pile 200 from damaging the devices in the high-voltage load 300, thereby improving the durability and service life of the high-voltage load 300.

[0128] In some embodiments, step S301 can be implemented by the following steps.

[0129] Step A: Control the switch assembly and the energy storage module so that the charging pile charges the power battery and the energy storage module in series.

[0130] Step B: Control the switch assembly and the energy storage module so that the energy storage module charges the power battery.

[0131] For example, step A and step B can be performed alternately according to a preset cycle to continuously step down charge the power battery, wherein the preset cycle can be controlled by a target duty cycle, and the target duty cycle can be a preset duty cycle or a duty cycle determined based on the voltage of the power battery and the output voltage of the charging pile. The present disclosure does not make any specific limitation on this.

[0132] In other embodiments, in order to prevent the high-voltage load from being damaged by excessive charging current, before the power battery is officially charged, the switch assembly and the energy storage module may be controlled to allow the power battery to pre-charge the high-voltage load.

[0133] In summary, the charging system in the present disclosure includes: a charging circuit, a power battery and a controller. The charging circuit is connected to the controller. The charging circuit includes: a switch assembly, a high-voltage load and an energy storage module. The switch assembly includes a first switch assembly and a second switch assembly. The power battery is connected to the charging pile through the first switch assembly. The power battery is also connected to one end of the energy storage module through the first switch assembly, and is connected to the other end of the energy storage module through the second switch assembly. The high-voltage load is respectively connected to the power battery and the charging pile through the first switch assembly. The controller controls the switch assembly and the energy storage module to step down and charge the power battery through the charging pile and the energy storage module, and to supply power to the high-voltage load through the power battery. When the present disclosure steps down and charges the vehicle, the high-voltage load is supplied with power by the power battery, and a stable direct current can be provided to the high-voltage load, so as to avoid the current fluctuation of the charging pile from damaging the devices in the high-voltage load, thereby improving the durability and service life of the high-voltage load.

[0134] Fig.17 FIG. 1 is a block diagram of a controller according to an exemplary embodiment. Fig.17 As shown, the controller 103 may include: a processor 1031 , a memory 1032 . The controller 103 may also include one or more of a multimedia component 1033 , an input / output (I / O) interface 1034 , and a communication component 1035 .

[0135] The processor 1031 is used to control the overall operation of the controller 103 to complete all or part of the steps in the above-mentioned charging control method. The memory 1032 is used to store various types of data to support the operation of the controller 103, which may include instructions for any application or method used to operate on the controller 103, and application-related data, such as contact data, messages sent and received, pictures, audio, video, etc. The memory 1032 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 1033 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 1032 or sent through the communication component 1035. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 1034 provides an interface between the processor 1031 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 1035 is used for wired or wireless communication between the controller 103 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 1035 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0136] In an exemplary embodiment, the controller 103 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned charging control method.

[0137] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned charging control method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 1032 including program instructions, and the above-mentioned program instructions can be executed by the processor 1031 of the controller 103 to complete the above-mentioned charging control method.

[0138] Fig.18 is a block diagram of a vehicle according to an exemplary embodiment, such as Fig.18 As shown, the vehicle 400 is provided with a controller 103 .

[0139] Fig.19 is a block diagram of another vehicle according to an exemplary embodiment. Fig.19 As shown, the vehicle 400 is provided with a charging system 100 .

[0140] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0141] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0142] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A charging system, characterized in that: The charging system (100) comprises: a charging circuit (101), a power battery (102) and a controller (103), wherein the charging circuit (101) is connected to the controller (103); the charging circuit (101) comprises: a switch component (1011) and an energy storage module (1012), wherein the switch component (1011) comprises a first switch component (1011a) and a second switch component (1011b); The power battery (102) is suitable for being connected to the charging pile (200) through the first switch component (1011a); the power battery (102) is also connected to one end of the energy storage module (1012) through the first switch component (1011a), and is connected to the other end of the energy storage module (1012) through the second switch component (1011b); the high-voltage load (300) is respectively connected to the power battery (102) and the charging pile (200) through the first switch component (1011a); The first switch component (1011a) comprises: a fourth switch (K4), a ninth switch (K9) and a tenth switch (K10); The first end of the fourth switch (K4) is connected to the positive electrode of the power battery (102), the second end of the fourth switch (K4) is connected to the first end of the ninth switch (K9), and the second end of the fourth switch (K4) is also connected to the charging pile (200); the first end of the tenth switch (K10) is connected to the positive electrode of the power battery (102), and the second end of the ninth switch (K9) and the second end of the tenth switch (K10) are respectively connected to the high-voltage load (300); The controller (103) is used to: The switch assembly (1011) and the energy storage module (1012) are controlled to step down and charge the power battery (102) through the charging pile (200) and the energy storage module (1012), and to supply power to the high-voltage load (300) through the power battery (102).

2. The system according to claim 1, characterized in that The energy storage module (1012) comprises: an inductor (L) and a three-phase inverter circuit (VT); The positive electrode of the power battery (102) is connected to the upper bridge arm of the three-phase inverter circuit (VT) through the first switch component (1011a), the negative electrode of the power battery (102) is connected to the lower bridge arm of the three-phase inverter circuit (VT), the midpoint of the bridge arm of the three-phase inverter circuit (VT) is connected to the first end of the inductor (L), and the second end of the inductor (L) is connected to the power battery (102) through the second switch component (1011b); The first end of the high-voltage load (300) is connected to the positive electrode of the power battery (102) through the first switch component (1011a), and the second end of the high-voltage load (300) is connected to the negative electrode of the power battery (102).

3. The system according to claim 2, characterized in that The charging circuit (101) further comprises: a first capacitor (C1); the first capacitor (C1) is connected to the power battery (102) via the first switch component (1011a).

4. The system according to claim 3, characterized in that The charging circuit (101) further comprises: a second capacitor (C2) and a first switch (K1), wherein a first end of the first switch (K1) is connected to a second end of the inductor (L), a second end of the first switch (K1) is connected to a first end of the second capacitor (C2), and a second end of the second capacitor (C2) is suitable for being connected to the charging pile (200).

5. The system according to claim 4, characterized in that The second switch component (1011b) comprises: a second switch (K2); a first end of the second switch (K2) is connected to the power battery (102), and a second end of the second switch (K2) is connected to a second end of the inductor (L).

6. The system according to claim 5, characterized in that The first switch component (1011a) comprises: a third switch (K3), a fourth switch (K4) and a fifth switch (K5); the charging circuit (101) further comprises: a pre-charging resistor (R); The first end of the pre-charging resistor (R) is connected to the positive electrode of the power battery (102), the second end of the pre-charging resistor (R) is connected to the first end of the third switch (K3), the second end of the third switch (K3) is connected to the first end of the fifth switch (K5), and the second end of the fifth switch (K5) is suitable for being connected to the charging pile (200); A first end of the fourth switch (K4) is connected to the positive electrode of the power battery (102), a second end of the fourth switch (K4) is connected to a first end of the fifth switch (K5), and a first end of the fifth switch (K5) is also connected to the high-voltage load (300).

7. The system according to claim 6, characterized in that The charging circuit (101) further comprises: a sixth switch (K6), a seventh switch (K7) and an eighth switch (K8); The first end of the sixth switch (K6) is connected to the second end of the fifth switch (K5), and the second end of the sixth switch (K6) is suitable for being connected to a charging pile (200); The first end of the seventh switch (K7) is connected to the negative electrode of the power battery (102), the second end of the seventh switch (K7) is connected to the first end of the eighth switch (K8), and the second end of the eighth switch (K8) is suitable for being connected to the charging pile (200).

8. The system according to claim 5, characterized in that The first switch component (1011a) further includes: a third switch (K3); the charging circuit (101) further includes: a pre-charging resistor (R); The first end of the pre-charging resistor (R) is connected to the positive electrode of the power battery (102), the second end of the pre-charging resistor (R) is connected to the first end of the third switch (K3), and the second end of the third switch (K3) is connected to the first end of the ninth switch (K9).

9. The system according to claim 8, characterized in that The charging circuit (101) further comprises: a sixth switch (K6), a seventh switch (K7) and an eighth switch (K8); The first end of the sixth switch (K6) is connected to the second end of the fourth switch (K4), and the second end of the sixth switch (K6) is suitable for being connected to a charging pile (200); The first end of the seventh switch (K7) is connected to the negative electrode of the power battery (102), the second end of the seventh switch (K7) is connected to the first end of the eighth switch (K8), and the second end of the eighth switch (K8) is suitable for being connected to the charging pile (200).

10. The system according to claim 7, characterized in that The controller (103) is specifically used for: The steps of closing the first switch (K1), the second switch (K2), the fourth switch (K4), the sixth switch (K6), the seventh switch (K7), the eighth switch (K8) and the upper bridge of the three-phase inverter circuit (VT), and disconnecting the third switch (K3), the fifth switch (K5) and the lower bridge of the three-phase inverter circuit (VT) are alternately performed according to a target duty cycle, and the steps of closing the first switch (K1), the second switch (K2), the fourth switch (K4), the seventh switch (K7) and the lower bridge of the three-phase inverter circuit (VT), and disconnecting the third switch (K3), the fifth switch (K5), the sixth switch (K6), the eighth switch (K8) and the upper bridge of the three-phase inverter circuit (VT) are alternately performed according to a target duty cycle, so as to step down and charge the power battery (102), and supply power to the high-voltage load (300) through the power battery (102).

11. The system according to claim 7, characterized in that The controller (103) is also used for: The first switch (K1), the third switch (K3), the fifth switch (K5), the seventh switch (K7) and the switch tube of the upper bridge of the three-phase inverter circuit (VT) are closed, and the second switch (K2), the fourth switch (K4), the sixth switch (K6), the eighth switch (K8) and the switch tube of the lower bridge of the three-phase inverter circuit (VT) are opened, so as to pre-charge the high-voltage load (300), the first capacitor (C1) and the second capacitor (C2) through the power battery (102).

12. The system according to claim 9, characterized in that The controller (103) is specifically used for: The steps of closing the first switch (K1), the second switch (K2), the sixth switch (K6), the seventh switch (K7), the eighth switch (K8), the tenth switch (K10) and the upper bridge of the three-phase inverter circuit (VT), and disconnecting the third switch (K3), the fourth switch (K4), the ninth switch (K9) and the lower bridge of the three-phase inverter circuit (VT) are alternately performed according to a target duty cycle, and the steps of closing the first switch (K1), the second switch (K2), the seventh switch (K7), the tenth switch (K10) and the lower bridge of the three-phase inverter circuit (VT), and disconnecting the third switch (K3), the fourth switch (K4), the sixth switch (K6), the eighth switch (K8), the ninth switch (K9) and the upper bridge of the three-phase inverter circuit (VT) are alternately performed according to a target duty cycle, so as to step down and charge the power battery (102), and supply power to the high-voltage load (300) through the power battery (102).

13. The system according to claim 9, characterized in that The controller (103) is also used for: The first switch (K1), the third switch (K3), the seventh switch (K7), the tenth switch (K10) and the switch tube of the upper bridge of the three-phase inverter circuit (VT) are closed, and the second switch (K2), the fourth switch (K4), the sixth switch (K6), the eighth switch (K8), the ninth switch (K9) and the switch tube of the lower bridge of the three-phase inverter circuit (VT) are opened, so as to pre-charge the high-voltage load (300), the first capacitor (C1) and the second capacitor (C2) through the power battery (102).

14. A charging control method, characterized in that: Applied to the charging system according to any one of claims 1 to 13, the method comprising: Controlling the switch assembly and the energy storage module to charge the power battery at a reduced voltage through the charging pile and the energy storage module; and The power battery is used to supply power to the high voltage load.

15. The method according to claim 14, characterized in that The control switch assembly and the energy storage module to charge the power battery at a reduced voltage through the charging pile and the energy storage module also includes: The steps of controlling the switch component and the energy storage module so that the charging pile charges the power battery and the energy storage module in series, and controlling the switch component and the energy storage module so that the energy storage module charges the power battery are alternately performed according to a preset cycle to reduce the voltage of the power battery.

16. The method according to claim 14, characterized in that The method further comprises: The switch assembly and the energy storage module are controlled so that the power battery pre-charges the high-voltage load.

17. A controller, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 14 to 16.

18. A vehicle, characterized in that: The vehicle comprises the controller of claim 17 or the charging system of any one of claims 1-13.

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