Electric vehicle and redundant system thereof

Abstract

The present invention provides an electric vehicle and a redundant system thereof, and relates to the field of electric vehicles. Among them, this redundant system includes a vehicle controller, a motor drive circuit, a hydraulic drive circuit, a pneumatic drive circuit, an auxiliary power supply connection circuit and a power supply connection circuit. The above circuits all have two input ends, which are electrically connected to two power batteries of the electric vehicle respectively. The output end of the motor drive circuit is used to electrically connect to the first motor controller and the second motor controller of the electric vehicle respectively. The output end of the hydraulic drive circuit is used to electrically connect to the first hydraulic pump and the second hydraulic pump of the electric vehicle respectively. The output end of the pneumatic drive circuit is used to electrically connect to the first air compressor and the second air compressor of the electric vehicle respectively. The output end of the auxiliary power supply connection circuit is used to electrically connect to the auxiliary power supply of the electric vehicle. The output end of the power supply connection circuit is used to electrically connect to the mains output interface of the electric vehicle. When a certain part is damaged, the electric vehicle can still work.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and in particular to an electric vehicle and a redundant system thereof. Background Art

[0002] Currently, electric vehicles and traditional fuel vehicles on the market cannot achieve redundant operation. Once one of the components fails, the vehicle cannot be driven. In many applications, such as ambulances, fire trucks, live broadcast vehicles for marathon competitions, important conference shuttles, military vehicles, etc., no interruption is allowed during the service process.

[0003] Electric vehicles are electronic products, and electronic components have a certain service life, which is not easy to detect before they are about to be damaged. How to ensure that some electronic components of electric vehicles can still drive when they are damaged is an urgent problem to be solved in the prior art. Summary of the invention

[0004] The present invention provides an electric vehicle and a redundant system thereof, aiming to improve the problem that the existing electric vehicle has no redundant function.

[0005] In order to solve the above technical problems, the present invention provides a redundant system for an electric vehicle, which comprises: a vehicle controller, a motor drive circuit, a hydraulic drive circuit, a pneumatic drive circuit, an auxiliary power supply connection circuit, and a power supply connection circuit electrically connected to an output end of the vehicle controller;

[0006] The input ends of the motor drive circuit, the hydraulic drive circuit, the pneumatic drive circuit, the auxiliary power connection circuit and the power supply connection circuit are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle;

[0007] The output end of the motor drive circuit is used to be electrically connected to the first motor controller and the second motor controller of the electric vehicle respectively; the output end of the hydraulic drive circuit is used to be electrically connected to the first hydraulic pump and the second hydraulic pump of the electric vehicle respectively; the output end of the pneumatic drive circuit is used to be electrically connected to the first air compressor and the second air compressor of the electric vehicle respectively; the output end of the auxiliary power supply connection circuit is used to be electrically connected to the auxiliary power supply of the electric vehicle; the output end of the power supply connection circuit is used to be electrically connected to the AC power output interface of the electric vehicle.

[0008] Optionally, the motor drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first motor controller and the second motor controller;

[0009] The motor drive circuit comprises an input terminal A1, an input terminal A2, an output terminal A1, an output terminal A2, an electric control switch A2 and an electric control switch A5; a first end of the electric control switch A2 is electrically connected to the input terminal A1, and a second end is electrically connected to the output terminal A1; a first end of the electric control switch A5 is electrically connected to the input terminal A2, and a second end is electrically connected to the output terminal A2; the input terminal A1 and the input terminal A2 are respectively used to electrically connect to a first power battery and a second power battery of the electric vehicle; the output terminal A1 and the output terminal A2 are respectively used to electrically connect to a first motor controller and a second motor controller of the electric vehicle;

[0010] The motor drive circuit further includes an electric control switch A8; a first end of the electric control switch A8 is electrically connected to a second end of the electric control switch A2, and a second end of the electric control switch A8 is electrically connected to a second end of the electric control switch A5;

[0011] The motor drive circuit further includes a manual switch A; the second end of the electric control switch A8 is electrically connected to the second end of the electric control switch A5 through the manual switch A;

[0012] The motor drive circuit further includes an electric control switch A3 and an electric control switch A6; the second end of the electric control switch A2 is electrically connected to the output end A1 through the electric control switch A3; the second end of the electric control switch A5 is electrically connected to the output end A2 through the electric control switch A6;

[0013] The motor drive circuit further includes an electric control switch A1 and a resistor A2; a first end of the electric control switch A1 is electrically connected to a first end of the electric control switch A2, and a second end of the electric control switch A1 is electrically connected to a second end of the electric control switch A2 through the resistor A1;

[0014] The motor drive circuit further includes an electric control switch A4 and a resistor A2; a first end of the electric control switch A4 is electrically connected to a first end of the electric control switch A5, and a second end of the electric control switch A4 is electrically connected to a second end of the electric control switch A5 through the resistor A2;

[0015] The motor drive circuit further includes an electric control switch A7 and a resistor A3; a first end of the electric control switch A7 is electrically connected to a first end of the electric control switch A8, and a second end of the electric control switch A7 is electrically connected to a second end of the electric control switch A8 through the resistor A3.

[0016] Optionally, the hydraulic drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first hydraulic pump and the second hydraulic pump;

[0017] The hydraulic drive circuit includes an input terminal B1, an input terminal B2, an output terminal B1, an output terminal B2, an electric control switch B1 and an electric control switch B3; the first end of the electric control switch B1 is electrically connected to the input terminal B1, and the second end is electrically connected to the output terminal B1; the first end of the electric control switch B3 is electrically connected to the input terminal B2, and the second end is electrically connected to the output terminal B2; the input terminal B1 and the input terminal B2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output terminal B1 and the output terminal B2 are respectively used to electrically connect to the first hydraulic pump and the second hydraulic pump of the electric vehicle;

[0018] The hydraulic drive circuit further includes an electric control switch B5; a first end of the electric control switch B5 is electrically connected to a second end of the electric control switch B1, and a second end of the electric control switch B5 is electrically connected to a second end of the electric control switch B3;

[0019] The hydraulic drive circuit further includes a manual switch B; the second end of the electric control switch B5 is electrically connected to the second end of the electric control switch B3 through the manual switch B;

[0020] The hydraulic drive circuit further includes an electric control switch B2 and an electric control switch B4; the second end of the electric control switch B1 is electrically connected to the output end B1 through the electric control switch B2; the second end of the electric control switch B3 is electrically connected to the output end B2 through the electric control switch B4;

[0021] The hydraulic drive circuit also includes an electric control switch B6 and a resistor B; the first end of the electric control switch B6 is electrically connected to the first end of the electric control switch B5, and the second end is electrically connected to the second end of the electric control switch B5 through the resistor B.

[0022] Optionally, the air pressure driving circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first air compressor and the second air compressor;

[0023] The pneumatic drive circuit includes an input terminal C1, an input terminal C2, an output terminal C1, an output terminal C2, an electric control switch C1 and an electric control switch C3; a first end of the electric control switch C1 is electrically connected to the input terminal C1, and a second end is electrically connected to the output terminal C1; a first end of the electric control switch C3 is electrically connected to the input terminal C2, and a second end is electrically connected to the output terminal C2; the input terminal C1 and the input terminal C2 are respectively used to electrically connect to a first power battery and a second power battery of the electric vehicle; the output terminal C1 and the output terminal C2 are respectively used to electrically connect to a first air compressor and a second air compressor of the electric vehicle;

[0024] The air pressure driving circuit further includes an electric control switch C5; a first end of the electric control switch C5 is electrically connected to a second end of the electric control switch C1, and a second end of the electric control switch C5 is electrically connected to a second end of the electric control switch C3;

[0025] The air pressure driving circuit further includes a manual switch C; the second end of the electric control switch C5 is electrically connected to the second end of the electric control switch C3 through the manual switch C;

[0026] The air pressure driving circuit further includes an electric control switch C2 and an electric control switch C4; the second end of the electric control switch C1 is electrically connected to the output end C1 through the electric control switch C2; the second end of the electric control switch C3 is electrically connected to the output end C2 through the electric control switch C4;

[0027] The air pressure driving circuit also includes an electric control switch C6 and a resistor C; a first end of the electric control switch C6 is electrically connected to a first end of the electric control switch C5, and a second end of the electric control switch C6 is electrically connected to a second end of the electric control switch C5 through the resistor C.

[0028] Optionally, the auxiliary power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the auxiliary power supply;

[0029] The auxiliary power connection circuit includes an input terminal D1, an input terminal D2, an output terminal D1, an output terminal D2, an electric control switch D1 and an electric control switch D3; the first end of the electric control switch D1 is electrically connected to the input terminal D1, and the second end is electrically connected to the output terminal D1; the first end of the electric control switch D3 is electrically connected to the input terminal D2, and the second end is electrically connected to the output terminal D2; the input terminal D1 and the input terminal D2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output terminal D1 and the output terminal D2 are used to electrically connect to the auxiliary power supply of the electric vehicle;

[0030] The auxiliary power connection circuit further includes an electric control switch D5; a first end of the electric control switch D5 is electrically connected to a second end of the electric control switch D1, and a second end of the electric control switch D5 is electrically connected to a second end of the electric control switch D3;

[0031] The auxiliary power connection circuit also includes a manual switch D; the second end of the electric control switch D5 is electrically connected to the second end of the electric control switch D3 through the manual switch D;

[0032] The auxiliary power connection circuit further includes an electric control switch D2 and an electric control switch D4; the second end of the electric control switch D1 is electrically connected to the output end D1 through the electric control switch D2; the second end of the electric control switch D3 is electrically connected to the output end D2 through the electric control switch D4;

[0033] The auxiliary power connection circuit also includes an electric control switch D6 and a resistor D; a first end of the electric control switch D6 is electrically connected to a first end of the electric control switch D5, and a second end of the electric control switch D6 is electrically connected to a second end of the electric control switch D5 through the resistor D.

[0034] Optionally, the power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the mains power output interface;

[0035] The power supply connection circuit includes an input terminal E1, an input terminal E2, an output terminal E1, an output terminal E2, an electric control switch E1 and an electric control switch E3; the first end of the electric control switch E1 is electrically connected to the input terminal E1, and the second end is electrically connected to the output terminal E1; the first end of the electric control switch E3 is electrically connected to the input terminal E2, and the second end is electrically connected to the output terminal E2; the input terminal E1 and the input terminal E2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output terminal E1 and the output terminal E2 are used to electrically connect to the 220V output interface of the electric vehicle;

[0036] The power supply connection circuit further includes an electric control switch E5; a first end of the electric control switch E5 is electrically connected to a second end of the electric control switch E1, and a second end of the electric control switch E5 is electrically connected to a second end of the electric control switch E3;

[0037] The power supply connection circuit further includes a manual switch E; the second end of the electric control switch E5 is electrically connected to the second end of the electric control switch E3 through the manual switch E;

[0038] The power supply connection circuit further includes an electric control switch E2 and an electric control switch E4; the second end of the electric control switch E1 is electrically connected to the output end E1 through the electric control switch E2; the second end of the electric control switch E3 is electrically connected to the output end E2 through the electric control switch E4;

[0039] The power supply connection circuit also includes an electric control switch E6 and a resistor E; a first end of the electric control switch E6 is electrically connected to a first end of the electric control switch E5, and a second end of the electric control switch E6 is electrically connected to a second end of the electric control switch E5 through the resistor E.

[0040] Second,

[0041] The present invention provides an electric vehicle, comprising the redundant system described in any paragraph of the first aspect.

[0042] Optionally, the electric vehicle further comprises a first motor controller, a second motor controller, a first drive motor and a second drive motor; the output terminal A1 of the motor drive circuit is electrically connected to the first motor controller, and the output terminal A2 is electrically connected to the second motor controller; the first motor controller is electrically connected to the first drive motor; the second motor controller is electrically connected to the second drive motor;

[0043] The electric vehicle also includes a first oil pump inverter, a second oil pump inverter, a first hydraulic pump, a second hydraulic pump and a steering machine; the output end B1 of the hydraulic drive circuit is electrically connected to the first oil pump inverter, and the output end B2 is electrically connected to the second oil pump inverter; the first oil pump inverter is electrically connected to the first hydraulic pump; the second oil pump inverter is electrically connected to the second hydraulic pump; the first hydraulic pump and the second hydraulic pump are connected in parallel to the steering machine through a one-way valve and a hydraulic oil pipe.

[0044] Optionally, the electric vehicle further includes a first air pump inverter, a second air pump inverter, a first air compressor, a second air compressor and an air storage cylinder; the output end C1 of the air pressure drive circuit is electrically connected to the first air pump inverter, and the output end C2 is electrically connected to the second air pump inverter; the first air pump inverter is electrically connected to the first air compressor; the second air pump inverter is electrically connected to the second air compressor; the first air compressor and the second air compressor are connected to the air storage cylinder in parallel through a one-way valve and an air pipe;

[0045] The electric vehicle also includes a first DC converter, a second DC converter and an auxiliary power supply; the output end D1 of the auxiliary power supply connection circuit is electrically connected to the first DC converter, and the output end D2 is electrically connected to the second DC converter; the output ends of the first DC converter and the second DC converter are connected in parallel to the auxiliary power supply.

[0046] Optionally, the electric vehicle further comprises a first AC power inverter, a second AC power inverter, a first double-throw switch, a second double-throw switch, a seamless transfer switch, a AC power input interface, an uninterruptible power supply and a AC power output interface; the output end E1 of the power supply connection circuit is electrically connected to the first AC power inverter, and the output end E2 is electrically connected to the second AC power inverter; the first AC power inverter is electrically connected to the first input end F1 of the first double-throw switch; the second AC power inverter is electrically connected to the first input end G1 of the second double-throw switch; the AC power input interface is electrically connected to the second input end F2 of the first double-throw switch and the second input end G2 of the second double-throw switch;

[0047] The output terminal F of the first double-throw switch and the output terminal G of the second double-throw switch are respectively electrically connected to the input terminal H of the seamless transfer switch; the output terminal H of the seamless transfer switch is electrically connected to the input terminal J of the uninterruptible power supply; the output terminal J of the uninterruptible power supply is electrically connected to the AC power output interface.

[0048] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0049] The present invention switches the connection relationship between the power source (first power battery, second power battery) and the power terminal (first motor controller, second motor controller, first hydraulic pump, second hydraulic pump, first air compressor, second air compressor, auxiliary power supply, mains power output interface) through the motor drive circuit, hydraulic drive circuit, pneumatic drive circuit, auxiliary power connection circuit and power supply connection circuit. When any part of the electric vehicle is damaged, the working state of the electric vehicle can still be guaranteed, which has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 is a schematic diagram of the structure of a redundant system provided by a first embodiment of the present invention;

[0052] Figure 2 is a schematic diagram of a motor drive circuit provided by a first embodiment of the present invention;

[0053] Figure 3 is a schematic diagram of a hydraulic drive circuit provided in a first embodiment of the present invention;

[0054] Figure 4 is a schematic diagram of an air pressure driving circuit provided in a first embodiment of the present invention;

[0055] Figure 5 is a schematic diagram of an auxiliary power supply connection circuit provided by a first embodiment of the present invention;

[0056] Figure 6 is a schematic diagram of a power supply connection circuit provided in a first embodiment of the present invention; DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] Embodiment 1

[0059] The first embodiment of the present invention provides a redundant system for an electric vehicle. Figure 6 As shown, the redundant system includes a vehicle controller, a motor drive circuit electrically connected to the output end of the vehicle controller, a hydraulic drive circuit, a pneumatic drive circuit, an auxiliary power supply connection circuit, and a power supply connection circuit.

[0060] The motor drive circuit, the hydraulic drive circuit, the pneumatic drive circuit, the auxiliary power supply connection circuit and the power supply connection circuit are all provided with two input ends and two output ends. The two input ends are respectively used to be electrically connected to the first power battery and the second power battery of the electric vehicle. The two output ends of the motor drive circuit are respectively used to be electrically connected to the first motor controller and the second motor controller of the electric vehicle. The two output ends of the hydraulic drive circuit are respectively used to be electrically connected to the first hydraulic pump and the second hydraulic pump of the electric vehicle. The two output ends of the pneumatic drive circuit are respectively used to be electrically connected to the first air compressor and the second air compressor of the electric vehicle. The two output ends of the auxiliary power supply connection circuit are used to be electrically connected to the auxiliary power supply of the electric vehicle. The two output ends of the power supply connection circuit are used to be electrically connected to the mains output interface of the electric vehicle.

[0061] In this embodiment, the motor drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first motor controller and the second motor controller. The hydraulic drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first hydraulic pump and the second hydraulic pump. The pneumatic drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first air compressor and the second air compressor; the auxiliary power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the auxiliary power supply. The power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the mains output interface.

[0062] Specifically, the motor drive circuit is used to enable the first power battery and the second power battery to be switchably connected to one or both of the first motor controller and the second motor controller. The hydraulic drive circuit is used to enable the first power battery and the second power battery to be switchably connected to one or both of the first hydraulic pump and the second hydraulic pump. The pneumatic drive circuit is used to enable the first power battery and the second power battery to be switchably connected to one or both of the first air compressor and the second air compressor. The auxiliary power supply connection circuit is used to enable the first power battery and the second power battery to be switchably connected to the auxiliary power supply. The power supply connection circuit is used to enable the first power battery and the second power battery to be switchably connected to the mains output interface.

[0063] In the embodiment of the present invention, the connection relationship between the power source (first power battery, second power battery) and the power terminal (first motor controller, second motor controller, first hydraulic pump, second hydraulic pump, first air compressor, second air compressor, auxiliary power supply, mains output interface) is switched through the motor drive circuit, hydraulic drive circuit, pneumatic drive circuit, auxiliary power supply connection circuit and power supply connection circuit. This ensures that the working state of the electric vehicle can be maintained even when a part of the entire system is damaged, which has great practical significance.

[0064] like Figure 2 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the motor drive circuit includes an input terminal A1, an input terminal A2, an output terminal A1, an output terminal A2, an electric control switch A2 and an electric control switch A5. The first end of the electric control switch A2 is electrically connected to the input terminal A1, and the second end is electrically connected to the output terminal A1. The first end of the electric control switch A5 is electrically connected to the input terminal A2, and the second end is electrically connected to the output terminal A2. The input terminal A1 and the input terminal A2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle. The output terminal A1 and the output terminal A2 are respectively used to electrically connect to the first motor controller and the second motor controller of the electric vehicle. Specifically, through the input terminal A1, the input terminal A2, the output terminal A1, the output terminal A2, the electric control switch A2 and the electric control switch A5, the first power battery and the second power battery provide energy for the first motor controller and the second motor controller respectively. A simple redundant system is formed.

[0065] like Figure 2 As shown, based on the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes an electric control switch A8. The first end of the electric control switch A8 is electrically connected to the second end of the electric control switch A2, and the second end is electrically connected to the second end of the electric control switch A5. Specifically, through the electric control switch A8, the first power battery can be the second motor controller, and the second power battery can provide energy for the first motor controller. To form a more complete redundant system.

[0066] like Figure 2 As shown, based on the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes a manual switch A. The second end of the electric control switch A8 is electrically connected to the second end of the electric control switch A5 through the manual switch A. Specifically, in order to prevent the electric control switch A8 from being damaged and causing a short circuit inside the redundant system, the manual switch A is used to disconnect the two lines when necessary.

[0067] like Figure 2 As shown, based on the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes an electric control switch A3 and an electric control switch A6. The second end of the electric control switch A2 is electrically connected to the output end A1 through the electric control switch A3. The second end of the electric control switch A5 is electrically connected to the output end A2 through the electric control switch A6. Specifically, when the first motor controller or the second motor controller is damaged, it can be disconnected by the electric control switch A3 and the electric control switch A6. And it does not affect the first power battery to provide energy to the second motor controller or the second power battery to the first motor controller.

[0068] like Figure 2 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes an electric control switch A1 and a resistor A1. The first end of the electric control switch A1 is electrically connected to the first end of the electric control switch A2, and the second end is electrically connected to the second end of the electric control switch A2 through the resistor A1. Specifically, before closing the electric control switch A2, first close the electric control switch A1. The load end is pre-charged with a small current. After the pre-charging is completed, close the electric control switch A2 to short-circuit the electric control switch A1 and the resistor A1, and then disconnect the electric control switch A1 to connect the power supply directly to the load. It can be understood that even if the electric control switch A1 is not disconnected after closing the electric control switch A2, the effect is the same.

[0069] like Figure 2 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes an electric control switch A4 and a resistor A2. The first end of the electric control switch A4 is electrically connected to the first end of the electric control switch A5, and the second end is electrically connected to the second end of the electric control switch A5 through the resistor A2. Specifically, before closing the electric control switch A5, first close the electric control switch A4. Use a small current to pre-charge the load end. After the pre-charging is completed, close the electric control switch A5 to short-circuit the electric control switch A4 and the resistor A2, and then disconnect the electric control switch A5 to connect the power supply directly to the load. It can be understood that even if the electric control switch A4 is not disconnected after closing the electric control switch A5, the effect is the same.

[0070] like Figure 2As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the motor drive circuit further includes an electric control switch A7 and a resistor A3. The first end of the electric control switch A7 is electrically connected to the first end of the electric control switch A8, and the second end is electrically connected to the second end of the electric control switch A8 through the resistor A3. Specifically, before closing the electric control switch A8, the electric control switch A7 is closed first. The load end is pre-charged with a small current. After the pre-charging is completed, the electric control switch A8 is closed to short-circuit the electric control switch A7 and the resistor A3, and then the electric control switch A7 is disconnected to connect the power supply directly to the load. It can be understood that even if the electric control switch A7 is not disconnected after the electric control switch A8 is closed, the effect is the same.

[0071] Specifically, when the electric vehicle is running normally, the vehicle controller controls the electric control switch A7 and the electric control switch A8 to be in the disconnected state, that is, after closing the electric control switch A1, the electric control switch A3, the electric control switch A4 and the electric control switch A6 to complete pre-charging, the electric control switch A2 and the electric control switch A5 are closed, and then the electric control switch A1 and the electric control switch A4 are disconnected. Thus, the first power battery and the second power battery are independently input to a group of drive systems at the same time. The first motor controller and the first drive motor are the first drive system, and the second motor controller and the second drive motor are the second drive system.

[0072] When the electric control switch A7 and the electric control switch A8 fail, the manual switch A is manually disconnected to ensure that the two sets of power batteries are independent of each other and the drive controllers and drive motors do not affect each other. Even if one set of power batteries or drive system fails, the other set of drive system can work normally.

[0073] When the first power battery fails, the vehicle controller controls the disconnection of the electronic control switches A1 and A2, closes the electronic control switch A7 to complete pre-charging, closes the electronic control switch A8 and then disconnects the electronic control switch A7, and the power battery 2 shares the work of the drive system 1.

[0074] When the second power battery fails, the vehicle controller controls the disconnection of the electronic control switch A4 and the electronic control switch A5, closes the electronic control switch A7 to complete pre-charging, closes the electronic control switch A8 and then disconnects the electronic control switch A7, and the power battery 1 shares the work of the drive system 1.

[0075] When the first power battery and the first drive system fail at the same time, the vehicle controller controls the disconnection of electronic control switches A1, A2, A4 and A6, closes electronic control switches A3, A5 and A7 to complete pre-charging, closes electronic control switch A8 and then disconnects electronic control switch A7, and the second power battery supplies power to the first drive system for driving.

[0076] When the second power battery and the first drive system fail at the same time, the vehicle controller controls the disconnection of electric control switches A1, A3, A4 and A5, closes electric control switches A2, A6 and A7 to complete pre-charging, closes electric control switch A8 and then disconnects electric control switch A7, and the first power battery supplies power to the second drive system for driving. Figure 2 This is the high voltage power distribution schematic diagram of the motor drive circuit:

[0077] like Figure 3 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the hydraulic drive circuit includes an input terminal B1, an input terminal B2, an output terminal B1, an output terminal B2, an electric control switch B1 and an electric control switch B3. The first end of the electric control switch B1 is electrically connected to the input terminal B1, and the second end is electrically connected to the output terminal B1. The first end of the electric control switch B3 is electrically connected to the input terminal B2, and the second end is electrically connected to the output terminal B2. The input terminal B1 and the input terminal B2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle. The output terminal B1 and the output terminal B2 are respectively used to electrically connect to the first hydraulic pump and the second hydraulic pump of the electric vehicle. Specifically, through the input terminal B1, the input terminal B2, the output terminal B1, the output terminal B2, the electric control switch B1 and the electric control switch B3, the first power battery and the second power battery provide energy for the first hydraulic pump and the second hydraulic pump respectively. A simple redundant system is formed.

[0078] like Figure 3 As shown, based on the above embodiment, in an optional embodiment of the present invention, the hydraulic drive circuit further includes an electric control switch B5. The first end of the electric control switch B5 is electrically connected to the second end of the electric control switch B1, and the second end is electrically connected to the second end of the electric control switch B3. Specifically, through the electric control switch B5, the first power battery can provide energy for the second hydraulic pump, and the second power battery can provide energy for the first hydraulic pump. To form a more complete redundant system.

[0079] like Figure 3 As shown, based on the above embodiment, in an optional embodiment of the present invention, the hydraulic drive circuit further includes a manual switch B. The second end of the electric control switch B5 is electrically connected to the second end of the electric control switch B3 through the manual switch B. Specifically, in order to prevent the electric control switch B5 from being damaged and causing a short circuit inside the redundant system, the manual switch B is used to disconnect the two circuits when necessary.

[0080] like Figure 3As shown, based on the above embodiment, in an optional embodiment of the present invention, the hydraulic drive circuit further includes an electric control switch B2 and an electric control switch B4. The second end of the electric control switch B1 is electrically connected to the output end B1 through the electric control switch B2. The second end of the electric control switch B3 is electrically connected to the output end B2 through the electric control switch B4. Specifically, when the first hydraulic pump or the second hydraulic pump is damaged, it can be disconnected by the electric control switch B2 and the electric control switch B4. And it does not affect the first power battery to provide energy for the second hydraulic pump or the second power battery to the first hydraulic pump.

[0081] like Figure 3 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the hydraulic drive circuit further includes an electric control switch B6 and a resistor B. The first end of the electric control switch B6 is electrically connected to the first end of the electric control switch B5, and the second end is electrically connected to the second end of the electric control switch B5 through the resistor B. Specifically, before closing the electric control switch B5, first close the electric control switch B6. Pre-charge the load end with a small current. After the pre-charging is completed, close the electric control switch B5 to short-circuit the electric control switch B6 and the resistor B, and then disconnect the electric control switch B6 to connect the power supply directly to the load. It can be understood that even if the electric control switch B6 is not disconnected after closing the electric control switch B5, the effect is the same.

[0082] Specifically, the first oil pump inverter and the first hydraulic pump form the first power steering system, and the second oil pump inverter and the second hydraulic pump form the second power steering system. During normal driving, the first power battery and the second power battery are each connected to an independent power steering system. That is, the vehicle controller controls the electronic control switch B5 and the electronic control switch B6 to be in the disconnected state, closes the electronic control switch B1, the electronic control switch B2, the electronic control switch B3 and the electronic control switch B4, and controls the first hydraulic pump and the second hydraulic pump to work independently. Each hydraulic pump outputs 50% of the flow rate, and each is connected in series with a one-way valve in the hydraulic pipeline to prevent the two oil pumps from mixing oil with each other.

[0083] When the electronic control switch B5 or B6 fails, the manual switch B can be manually disconnected to ensure that the two power batteries drive the power steering system independently without affecting each other. Even if one of the power batteries or the power steering system fails, the other power steering system can work normally.

[0084] When power battery 1 fails, the vehicle controller controls the disconnection of the electronic control switch B1, closes the electronic control switch B6 to complete pre-charging, closes the electronic control switch B5 and then disconnects the electronic control switch B6, and the second power battery respectively supplies power to the first oil pump inverter and the second oil pump inverter to drive the two hydraulic pumps to work.

[0085] When power battery 2 fails, the vehicle controller controls the disconnection of the electronic control switch B3, closes the electronic control switch B6 to complete pre-charging, closes the electronic control switch B5 and then disconnects the electronic control switch B6, and the first power battery supplies power to the first oil pump inverter and the second oil pump inverter respectively to drive the two hydraulic pumps to work.

[0086] When the first power battery and the second power steering system 2 fail at the same time, the vehicle controller controls the disconnection of the electronic control switches B1 and B4, closes the electronic control switch B6 to complete pre-charging, closes the electronic control switch B5 and then disconnects the electronic control switch B6, and the second power battery supplies power to the first power steering system for driving.

[0087] When the second power battery and the first power steering system fail at the same time, the vehicle controller controls the disconnection of the electronic control switches B2 and B3, closes the electronic control switch B6 to complete pre-charging, closes the electronic control switch B5 and then disconnects the electronic control switch B6, and the first power battery supplies power to the second power steering system for driving.

[0088] like Figure 4 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the air pressure drive circuit includes an input terminal C1, an input terminal C2, an output terminal C1, an output terminal C2, an electric control switch C1 and an electric control switch C3. The first end of the electric control switch C1 is electrically connected to the input terminal C1, and the second end is electrically connected to the output terminal C1. The first end of the electric control switch C3 is electrically connected to the input terminal C2, and the second end is electrically connected to the output terminal C2. The input terminal C1 and the input terminal C2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle. The output terminal C1 and the output terminal C2 are respectively used to electrically connect to the first air compressor and the second air compressor of the electric vehicle. Specifically, through the input terminal C1, the input terminal C2, the output terminal C1, the output terminal C2, the electric control switch C1 and the electric control switch C3, the first power battery and the second power battery provide energy for the first air compressor and the second air compressor respectively. A simple redundant system is formed.

[0089] like Figure 4 As shown, based on the above embodiment, in an optional embodiment of the present invention, the air pressure drive circuit further includes an electric control switch C5. The first end of the electric control switch C5 is electrically connected to the second end of the electric control switch C1, and the second end is electrically connected to the second end of the electric control switch C3. Specifically, through the electric control switch C5, the first power battery can provide energy for the second air compressor, and the second power battery can provide energy for the first air compressor. To form a more complete redundant system.

[0090] like Figure 4As shown, based on the above embodiment, in an optional embodiment of the present invention, the air pressure drive circuit further includes a manual switch C. The second end of the electric control switch C5 is electrically connected to the second end of the electric control switch C3 through the manual switch C. Specifically, in order to prevent the electric control switch C5 from being damaged and causing an internal short circuit in the redundant system, the manual switch C is used to disconnect the two circuits when necessary.

[0091] like Figure 4 As shown, based on the above embodiment, in an optional embodiment of the present invention, the air pressure drive circuit also includes an electric control switch C2 and an electric control switch C4. The second end of the electric control switch C1 is electrically connected to the output end C1 through the electric control switch C2. The second end of the electric control switch C3 is electrically connected to the output end C2 through the electric control switch C4. Specifically, when the first air compressor or the second air compressor is damaged, it can be disconnected by the electric control switch C2 and the electric control switch C4. And it does not affect the first power battery to provide energy to the second air compressor or the second power battery to the first air compressor.

[0092] like Figure 4 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the air pressure drive circuit further includes an electric control switch C6 and a resistor C. The first end of the electric control switch C6 is electrically connected to the first end of the electric control switch C5, and the second end is electrically connected to the second end of the electric control switch C5 through the resistor C. Specifically, before closing the electric control switch C5, first close the electric control switch C6. The load end is pre-charged with a small current. After the pre-charging is completed, close the electric control switch C5 to short-circuit the electric control switch C6 and the resistor C, and then disconnect the electric control switch C6 to connect the power supply directly to the load. It can be understood that even if the electric control switch C6 is not disconnected after closing the electric control switch C5, the effect is the same.

[0093] Specifically, the first air pump inverter and the first air compressor are the first electric air compressor system, and the second air pump inverter and the second air compressor are the first electric air compressor system. During normal driving, the first power battery and each second power battery are connected to an independent electric air compressor system. That is: the vehicle controller controls the electric control switch C5 and the electric control switch C6 to be in the disconnected state, closes the electric control switch C1, the electric control switch C2, the electric control switch C3, and the electric control switch C4, controls the first air compressor and the second air compressor to work independently, and connects a one-way valve in series in each compressed air pipe to prevent the compressed air of the two routes from affecting each other.

[0094] When the electric control switch C5 or C6 fails, the manual switch C is manually disconnected to ensure that the two power batteries drive the electric air compressor system independently without affecting each other. Even if one of the power batteries or the electric air compressor system fails, the other electric air compressor system can work normally.

[0095] When the first power battery fails, the vehicle controller controls the disconnection of the electronic control switch C1, closes the electronic control switch C6 to complete pre-charging, closes the electronic control switch C5 and then disconnects the electronic control switch C6, and the second power battery respectively supplies power to the first air pump inverter and the second air pump inverter to drive the two electric air compressors to work.

[0096] When the second power battery fails, the vehicle controller controls the disconnection of the electronic control switch C3, closes the electronic control switch C6 to complete pre-charging, closes the electronic control switch C5 and then disconnects the electronic control switch C6, and the first power battery respectively supplies power to the first air pump inverter and the second air pump inverter to drive the two electric air compressors to work.

[0097] When the first power battery and the second electric air compressor system fail at the same time, the vehicle controller controls the disconnection of the electric control switches C1 and C4, closes the electric control switch C6 to complete pre-charging, closes the electric control switch C5 and then disconnects the electric control switch C6, and the second power battery supplies power to the first electric air compressor system.

[0098] When the second power battery and the first electric air compressor system fail at the same time, the vehicle controller controls the disconnection of the electric control switches C2 and C3, closes the electric control switch C6 to complete pre-charging, closes the electric control switch C5 and then disconnects the electric control switch C6, and the first power battery supplies power to the second electric air compressor system.

[0099] like Figure 5 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the auxiliary power connection circuit includes an input terminal D1, an input terminal D2, an output terminal D1, an output terminal D2, an electric control switch D1 and an electric control switch D3. The first end of the electric control switch D1 is electrically connected to the input terminal D1, and the second end is electrically connected to the output terminal D1. The first end of the electric control switch D3 is electrically connected to the input terminal D2, and the second end is electrically connected to the output terminal D2. The input terminal D1 and the input terminal D2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle. The output terminal D1 and the output terminal D2 are used to electrically connect to the auxiliary power supply of the electric vehicle. Specifically, through the input terminal D1, the input terminal D2, the output terminal D1, the output terminal D2, the electric control switch D1 and the electric control switch D3, the first power battery and the second power battery respectively provide energy for the auxiliary power supply through the first DC converter and the second DC converter. A simple redundant system is formed.

[0100] like Figure 5As shown, based on the above embodiment, in an optional embodiment of the present invention, the auxiliary power supply connection circuit further includes an electric control switch D5. The first end of the electric control switch D5 is electrically connected to the second end of the electric control switch D1, and the second end is electrically connected to the second end of the electric control switch D3. Specifically, through the electric control switch D5, the first power battery can provide energy for the auxiliary power supply through the second DC converter, and the second power battery can provide energy for the auxiliary power supply through the first DC converter. To form a more complete redundant system.

[0101] like Figure 5 As shown, based on the above embodiment, in an optional embodiment of the present invention, the auxiliary power connection circuit further includes a manual switch D. The second end of the electric control switch D5 is electrically connected to the second end of the electric control switch D3 through the manual switch D. Specifically, in order to prevent the electric control switch D5 from being damaged and causing a short circuit inside the redundant system, the manual switch D is used to disconnect the two lines when needed.

[0102] like Figure 5 As shown, based on the above embodiment, in an optional embodiment of the present invention, the auxiliary power connection circuit further includes an electric control switch D2 and an electric control switch D4. The second end of the electric control switch D1 is electrically connected to the output end D1 through the electric control switch D2. The second end of the electric control switch D3 is electrically connected to the output end D2 through the electric control switch D4. Specifically, when the first DC converter or the second DC converter is damaged, it can be disconnected by the electric control switch D2 and the electric control switch D4. And it does not affect the first power battery to provide energy for the auxiliary power supply through the second DC converter or the second power battery to provide energy for the auxiliary power supply through the first DC converter.

[0103] like Figure 5 As shown, based on the above embodiment, in an optional embodiment of the present invention, the auxiliary power supply connection circuit also includes an electric control switch D6 and a resistor D. The first end of the electric control switch D6 is electrically connected to the first end of the electric control switch D5, and the second end is electrically connected to the second end of the electric control switch D5 through the resistor D. Specifically, before closing the electric control switch D5, first close the electric control switch D6. The load end is pre-charged with a small current. After the pre-charging is completed, close the electric control switch D5 to short-circuit the electric control switch D6 and the resistor D, and then disconnect the electric control switch D6 to connect the power supply directly to the load. It can be understood that even if the electric control switch D6 is not disconnected after closing the electric control switch D5, the effect is the same.

[0104] Specifically, the first DC converter and the auxiliary power supply form a first DC-DC system, and the second DC converter and the auxiliary power supply form a second DC-DC system. During normal driving, the first power battery and each second power battery are connected to an independent DC-DC system. That is, the vehicle controller controls the electronic control switch D5 and the electronic control switch D6 to be in the disconnected state, closes the electronic control switch D1, the electronic control switch D2, the electronic control switch D3, and the electronic control switch D4, controls the first DC converter and the second DC converter to work independently, and the two DC-DC systems can supply power to the auxiliary power supply at the same time.

[0105] When the electric control switch D5 or D6 fails, the manual switch D is manually disconnected to ensure that the two power batteries independently supply power to the two DC-DC systems without affecting each other. Even if one of the power batteries or the DC-DC system fails, the other DC-DC system can work normally.

[0106] When the first power battery fails, the vehicle controller controls the disconnection of the electronic control switch D1, closes the electronic control switch D6 to complete pre-charging, closes the electronic control switch D5 and then disconnects the electronic control switch D6, and the second power battery supplies power to the first DC converter and the second DC converter respectively.

[0107] When the second power battery fails, the vehicle controller controls the disconnection of the electronic control switch D3, closes the electronic control switch D6 to complete pre-charging, closes the electronic control switch D5 and then disconnects the electronic control switch D6, and the first power battery supplies power to the first DC converter and the second DC converter respectively.

[0108] When the first power battery and the second DC-DC system fail at the same time, the vehicle controller controls the disconnection of the electronic control switches D1 and D4, closes the electronic control switch D6 to complete pre-charging, closes the electronic control switch D5 and then disconnects the electronic control switch D6, and the second power battery 2 supplies power to the first DC-DC system.

[0109] When the second power battery and the first DC-DC system fail at the same time, the vehicle controller controls the disconnection of the electronic control switches D2 and D3, closes the electronic control switch D6 to complete pre-charging, closes the electronic control switch D5 and then disconnects the electronic control switch D6, and the first power battery supplies power to the second DC-DC system.

[0110] like Figure 6As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the power supply connection circuit includes an input terminal E1, an input terminal E2, an output terminal E1, an output terminal E2, an electric control switch E1 and an electric control switch E3. The first end of the electric control switch E1 is electrically connected to the input terminal E1, and the second end is electrically connected to the output terminal E1. The first end of the electric control switch E3 is electrically connected to the input terminal E2, and the second end is electrically connected to the output terminal E2. The input terminal E1 and the input terminal E2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle. The output terminal E1 and the output terminal E2 are used to electrically connect to the 220V output interface of the electric vehicle. Specifically, through the input terminal E1, the input terminal E2, the output terminal E1, the output terminal E2, the electric control switch E1 and the electric control switch E3, the first power battery and the second power battery respectively provide energy for the mains output interface through the first mains inverter and the second mains inverter. A simple redundant system is formed.

[0111] like Figure 6 As shown, on the basis of the above embodiment, in an optional embodiment of the present invention, the power supply connection circuit further includes an electric control switch E5. The first end of the electric control switch E5 is electrically connected to the second end of the electric control switch E1, and the second end is electrically connected to the second end of the electric control switch E3. Specifically, through the electric control switch E5, the first power battery can provide energy for the mains output interface through the second mains inverter, and the second power battery can provide energy for the mains output interface through the first mains inverter. To form a more complete redundant system.

[0112] like Figure 6 As shown, based on the above embodiment, in an optional embodiment of the present invention, the power supply connection circuit further includes a manual switch E. The second end of the electric control switch E5 is electrically connected to the second end of the electric control switch E3 through the manual switch E. Specifically, in order to prevent the electric control switch E5 from being damaged and causing a short circuit inside the redundant system, the manual switch E is used to disconnect the two lines when needed.

[0113] like Figure 6 As shown, on the basis of the above-mentioned embodiment, in an optional embodiment of the present invention, the power supply connection circuit also includes an electric control switch E2 and an electric control switch E4. The second end of the electric control switch E1 is electrically connected to the output end E1 through the electric control switch E2. The second end of the electric control switch E3 is electrically connected to the output end E2 through the electric control switch E4. Specifically, when the first mains inverter or the second mains inverter is damaged, it can be disconnected by the electric control switch E2 and the electric control switch E4. And it does not affect the first power battery providing energy to the mains output interface through the second mains inverter or the second power battery providing energy to the mains output interface through the first mains inverter.

[0114] like Figure 6As shown, based on the above embodiment, in an optional embodiment of the present invention, the power supply connection circuit further includes an electric control switch E6 and a resistor E. The first end of the electric control switch E6 is electrically connected to the first end of the electric control switch E5, and the second end is electrically connected to the second end of the electric control switch E5 through the resistor E. Specifically, before closing the electric control switch E5, the electric control switch E6 is closed first. The load end is pre-charged with a small current. After the pre-charging is completed, the electric control switch E5 is closed to short-circuit the electric control switch E6 and the resistor E, and then the electric control switch E6 is disconnected to connect the power supply directly to the load. It can be understood that even if the electric control switch E6 is not disconnected after the electric control switch E5 is closed, the effect is the same.

[0115] Specifically, the first power battery and the second power battery are respectively connected to a mains inverter, and the two mains inverters supply power to the mains output interface through the same seamless transfer switch. The vehicle controller controls the electric control switches E5 and E6 to be in the disconnected state, closes the electric control switches E1, E2, E3, and E4, and controls the first mains inverter and the second mains inverter to work independently. Both mains inverters can supply power to the seamless transfer switch at the same time. In this state, the seamless transfer switch defaults to the output after the first mains inverter is connected to the uninterruptible power supply; when the first mains inverter fails, the seamless transfer switch switches to the output after the second mains inverter is connected to the uninterruptible power supply.

[0116] When the electric control switch E5 or the electric control switch E6 fails, the manual switch E is manually disconnected to ensure that the two sets of power batteries independently supply power to the two AC inverters without affecting each other. Even if one set of power batteries or AC inverter fails, the other AC inverter can work normally.

[0117] When the first power battery fails, the vehicle controller controls the disconnection of the electronic control switch E1, closes the electronic control switch E6 to complete pre-charging, closes the electronic control switch E5 and then disconnects the electronic control switch E6, and the second power battery supplies power to the first AC inverter and the second AC inverter respectively.

[0118] When the second power battery fails, the vehicle controller controls the disconnection of the electronic control switch E3, closes the electronic control switch E6 to complete pre-charging, closes the electronic control switch E5 and then disconnects the electronic control switch E6, and the first power battery supplies power to the first AC inverter and the second AC inverter respectively.

[0119] When the first power battery and the second AC power inverter fail at the same time, the vehicle controller controls the disconnection of the electronic control switches E1 and E4, closes the electronic control switch E6 to complete pre-charging, closes the electronic control switch E5 and then disconnects the electronic control switch E6, and the second power battery supplies power to the first AC power inverter.

[0120] When the second power battery and the first AC power inverter fail at the same time, the vehicle controller controls the disconnection of the electronic control switches E2 and E3, closes the electronic control switch E6 to complete pre-charging, closes the electronic control switch E5 and then disconnects the electronic control switch E6, and the first power battery supplies power to the second AC power inverter.

[0121] Embodiment 2

[0122] An embodiment of the present invention provides an electric vehicle, which includes the redundant system described in the first embodiment.

[0123] like Figure 2 As shown, in this embodiment, the electric vehicle further includes a first motor controller, a second motor controller, a first drive motor and a second drive motor. The output terminal A1 of the motor drive circuit is electrically connected to the first motor controller, and the output terminal A2 is electrically connected to the second motor controller. The first motor controller is electrically connected to the first drive motor. The second motor controller is electrically connected to the second drive motor. Specifically, through the motor drive circuit, the first power battery and the second power battery can respectively supply power to the first motor controller and / or the second motor controller to drive the first motor and / or the second hydraulic pump to operate, thereby ensuring the power source during the operation of the vehicle.

[0124] like Figure 3 As shown, in this embodiment, the electric vehicle also includes a first oil pump inverter, a second oil pump inverter, a first hydraulic pump, a second hydraulic pump and a steering machine. The output end B1 of the hydraulic drive circuit is electrically connected to the first oil pump inverter, and the output end B2 is electrically connected to the second oil pump inverter. The first oil pump inverter is electrically connected to the first hydraulic pump. The second oil pump inverter is electrically connected to the second hydraulic pump. The first hydraulic pump and the second hydraulic pump are connected to the steering machine in parallel through a one-way valve and a hydraulic oil pipe. Specifically, through the hydraulic drive circuit, the first power battery and the second power battery can respectively power the first oil pump inverter and / or the second oil pump inverter to drive the first hydraulic pump and / or the second hydraulic pump to operate, thereby ensuring the steering power during the operation of the vehicle.

[0125] like Figure 4As shown, in this embodiment, the electric vehicle also includes a first air pump inverter, a second air pump inverter, a first air compressor, a second air compressor and an air cylinder. The output end C1 of the air pressure drive circuit is electrically connected to the first air pump inverter, and the output end C2 is electrically connected to the second air pump inverter. The first air pump inverter is electrically connected to the first air compressor. The second air pump inverter is electrically connected to the second air compressor. The first air compressor and the second air compressor are connected to the air cylinder in parallel through a one-way valve and an air pipe. Specifically, through the air pressure drive circuit, the first power battery and the second power battery can respectively power the first air pump inverter and / or the second air pump inverter to drive the first air compressor and / or the second air compressor to operate, thereby ensuring the air source during the operation of the vehicle.

[0126] like Figure 5 As shown, in this embodiment, the electric vehicle further includes a first DC converter, a second DC converter and an auxiliary power supply. The output terminal D1 of the auxiliary power supply connection circuit is electrically connected to the first DC converter, and the output terminal D2 is electrically connected to the second DC converter. The output terminals of the first DC converter and the second DC converter are connected in parallel to the auxiliary power supply. Specifically, through the auxiliary power supply connection circuit, the first power battery and the second power battery can respectively power the first DC converter and / or the second DC converter and the auxiliary power supply to provide electrical energy for the auxiliary power supply.

[0127] The first oil pump inverter, the second oil pump inverter, the first air pump inverter and the second air pump inverter are DC / AC inverters. The first DC converter and the second DC converter are DC / DC converters. The auxiliary power supply is a 24V lead-acid battery.

[0128] like Figure 6 As shown, in this embodiment, the electric vehicle also includes a first mains inverter, a second mains inverter, a first double-throw switch, a second double-throw switch, a seamless transfer switch, a mains input interface, an uninterruptible power supply and a mains output interface. The output end E1 of the power supply connection circuit is electrically connected to the first mains inverter, and the output end E2 is electrically connected to the second mains inverter. The first mains inverter is electrically connected to the first input end F1 of the first double-throw switch. The second mains inverter is electrically connected to the first input end G1 of the second double-throw switch. The mains input interface is electrically connected to the second input end F2 of the first double-throw switch and the second input end G2 of the second double-throw switch.

[0129] The first double-throw switch output terminal F and the second double-throw switch output terminal G are respectively electrically connected to the seamless transfer switch input terminal H. The seamless transfer switch output terminal H is electrically connected to the uninterruptible power supply input terminal J. The uninterruptible power supply output terminal J is electrically connected to the mains output interface.

[0130] Specifically,

[0131] The redundant switching function of the mains power supply connection circuit is formed by the first double-throw switch, the second double-throw switch and the seamless transfer switch.

[0132] When the first power battery and / or the second power battery supplies power to the seamless transfer switch, the first input terminal F1 of the first double-throw switch and the first input terminal G1 of the second double-throw switch are manually controlled to close, and the power is output to the mains output interface after the uninterruptible power supply.

[0133] When the seamless transfer switch is powered by an external AC220V mains, the second input terminal F2 of the first double-throw switch and the second input terminal G2 of the second double-throw switch are manually controlled to close, and the power is output to the mains output interface after passing through the uninterruptible power supply.

[0134] When the seamless transfer switch fails or the high-voltage circuit of the system and the two AC power inverters fail at the same time, the AC220V uninterruptible power supply directly supplies power to the AC220V AC power output interface.

[0135] The present invention switches the connection relationship between the power source (first power battery, second power battery) and the power terminal (first motor controller, second motor controller, first hydraulic pump, second hydraulic pump, first air compressor, second air compressor, auxiliary power supply, mains power output interface) through the motor drive circuit, hydraulic drive circuit, pneumatic drive circuit, auxiliary power connection circuit and power supply connection circuit. When any part of the electric vehicle is damaged, the working state of the electric vehicle can still be guaranteed, which has great practical significance.

[0136] The mains inverter is an AC220V DC / AC inverter. The first double-throw switch and the second double-throw switch are both two-choose-one switches, and their structure is similar to that of a single-pole double-throw switch, where one pole of the knife is the output end and the two poles of the throwing knife are the input ends. The seamless transfer switch is the STS switch.

[0137] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A redundant system for an electric vehicle, characterized in that: It comprises: a vehicle controller, a motor drive circuit, a hydraulic drive circuit, a pneumatic drive circuit, an auxiliary power connection circuit, and a power supply connection circuit electrically connected to the output end of the vehicle controller; The input ends of the motor drive circuit, the hydraulic drive circuit, the pneumatic drive circuit, the auxiliary power connection circuit and the power supply connection circuit are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; The output end of the motor drive circuit is respectively used to electrically connect to the first motor controller and the second motor controller of the electric vehicle; the output end of the hydraulic drive circuit is respectively used to electrically connect to the first hydraulic pump and the second hydraulic pump of the electric vehicle; The output ends of the air pressure driving circuit are respectively used to be electrically connected to the first air compressor and the second air compressor of the electric vehicle; The output end of the auxiliary power connection circuit is used to electrically connect to the auxiliary power supply of the electric vehicle; The output end of the power supply connection circuit is used to be electrically connected to the mains power output interface of the electric vehicle; The motor drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first motor controller and the second motor controller; The motor drive circuit comprises an input terminal A1, an input terminal A2, an output terminal A1, an output terminal A2, an electric control switch A2 and an electric control switch A5; a first end of the electric control switch A2 is electrically connected to the input terminal A1, and a second end is electrically connected to the output terminal A1; a first end of the electric control switch A5 is electrically connected to the input terminal A2, and a second end is electrically connected to the output terminal A2; the input terminal A1 and the input terminal A2 are respectively used to electrically connect to a first power battery and a second power battery of the electric vehicle; the output terminal A1 and the output terminal A2 are respectively used to electrically connect to a first motor controller and a second motor controller of the electric vehicle; The motor drive circuit also includes an electric control switch A8; The first end of the electric control switch A8 is electrically connected to the second end of the electric control switch A2, and the second end is electrically connected to the second end of the electric control switch A5; The motor drive circuit further includes a manual switch A; the second end of the electric control switch A8 is electrically connected to the second end of the electric control switch A5 through the manual switch A; The motor drive circuit also includes an electric control switch A3 and an electric control switch A6; The second end of the electric control switch A2 is electrically connected to the output end A1 through the electric control switch A3; the second end of the electric control switch A5 is electrically connected to the output end A2 through the electric control switch A6; The motor drive circuit further includes an electric control switch A1 and a resistor A1; a first end of the electric control switch A1 is electrically connected to a first end of the electric control switch A2, and a second end of the electric control switch A1 is electrically connected to a second end of the electric control switch A2 through the resistor A1; The motor drive circuit also includes an electric control switch A4 and a resistor A2; The first end of the electric control switch A4 is electrically connected to the first end of the electric control switch A5, and the second end is electrically connected to the second end of the electric control switch A5 through the resistor A2; The motor drive circuit further includes an electric control switch A7 and a resistor A3; a first end of the electric control switch A7 is electrically connected to a first end of the electric control switch A8, and a second end of the electric control switch A7 is electrically connected to a second end of the electric control switch A8 through the resistor A3; The power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the mains power output interface; The power supply connection circuit includes an input terminal E1, an input terminal E2, an output terminal E1, an output terminal E2, an electric control switch E1 and an electric control switch E3; The first end of the electric control switch E1 is electrically connected to the input end E1, and the second end is electrically connected to the output end E1; The first end of the electric control switch E3 is electrically connected to the input end E2, and the second end is electrically connected to the output end E2; the input end E1 and the input end E2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output end E1 and the output end E2 are used to electrically connect to the 220V output interface of the electric vehicle; The power supply connection circuit also includes an electric control switch E5; The first end of the electric control switch E5 is electrically connected to the second end of the electric control switch E1, and the second end is electrically connected to the second end of the electric control switch E3; The power supply connection circuit further includes a manual switch E; the second end of the electric control switch E5 is electrically connected to the second end of the electric control switch E3 through the manual switch E; The power supply connection circuit also includes an electric control switch E2 and an electric control switch E4; The second end of the electric control switch E1 is electrically connected to the output end E1 through the electric control switch E2; The second end of the electric control switch E3 is electrically connected to the output end E2 through the electric control switch E4; The power supply connection circuit also includes an electric control switch E6 and a resistor E; a first end of the electric control switch E6 is electrically connected to a first end of the electric control switch E5, and a second end of the electric control switch E6 is electrically connected to a second end of the electric control switch E5 through the resistor E.

2. A redundant system for an electric vehicle according to claim 1, characterized in that , the hydraulic drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first hydraulic pump and the second hydraulic pump; The hydraulic drive circuit includes an input terminal B1, an input terminal B2, an output terminal B1, an output terminal B2, an electric control switch B1 and an electric control switch B3; The first end of the electric control switch B1 is electrically connected to the input end B1, and the second end is electrically connected to the output end B1; The first end of the electric control switch B3 is electrically connected to the input end B2, and the second end is electrically connected to the output end B2; The input end B1 and the input end B2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output end B1 and the output end B2 are respectively used to electrically connect to the first hydraulic pump and the second hydraulic pump of the electric vehicle; The hydraulic drive circuit also includes an electric control switch B5; The first end of the electric control switch B5 is electrically connected to the second end of the electric control switch B1, and the second end is electrically connected to the second end of the electric control switch B3; The hydraulic drive circuit further includes a manual switch B; the second end of the electric control switch B5 is electrically connected to the second end of the electric control switch B3 through the manual switch B; The hydraulic drive circuit further includes an electric control switch B2 and an electric control switch B4; the second end of the electric control switch B1 is electrically connected to the output end B1 through the electric control switch B2; The second end of the electric control switch B3 is electrically connected to the output end B2 through the electric control switch B4; The hydraulic drive circuit also includes an electric control switch B6 and a resistor B; the first end of the electric control switch B6 is electrically connected to the first end of the electric control switch B5, and the second end is electrically connected to the second end of the electric control switch B5 through the resistor B.

3. A redundant system for an electric vehicle according to claim 1, characterized in that , the air pressure drive circuit is used to switch the electrical connection relationship between the first power battery, the second power battery, the first air compressor and the second air compressor; The air pressure driving circuit includes an input terminal C1, an input terminal C2, an output terminal C1, an output terminal C2, an electric control switch C1 and an electric control switch C3; The first end of the electric control switch C1 is electrically connected to the input end C1, and the second end is electrically connected to the output end C1; the first end of the electric control switch C3 is electrically connected to the input end C2, and the second end is electrically connected to the output end C2; the input end C1 and the input end C2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output end C1 and the output end C2 are respectively used to electrically connect to the first air compressor and the second air compressor of the electric vehicle; The air pressure drive circuit also includes an electric control switch C5; The first end of the electric control switch C5 is electrically connected to the second end of the electric control switch C1, and the second end is electrically connected to the second end of the electric control switch C3; The air pressure driving circuit further includes a manual switch C; the second end of the electric control switch C5 is electrically connected to the second end of the electric control switch C3 through the manual switch C; The air pressure driving circuit further includes an electric control switch C2 and an electric control switch C4; the second end of the electric control switch C1 is electrically connected to the output end C1 through the electric control switch C2; the second end of the electric control switch C3 is electrically connected to the output end C2 through the electric control switch C4; The air pressure driving circuit also includes an electric control switch C6 and a resistor C; a first end of the electric control switch C6 is electrically connected to a first end of the electric control switch C5, and a second end of the electric control switch C6 is electrically connected to a second end of the electric control switch C5 through the resistor C.

4. A redundant system for an electric vehicle according to claim 1, characterized in that , the auxiliary power supply connection circuit is used to switch the connection relationship between the first power battery, the second power battery and the auxiliary power supply; The auxiliary power connection circuit includes an input terminal D1, an input terminal D2, an output terminal D1, an output terminal D2, an electric control switch D1 and an electric control switch D3; The first end of the electric control switch D1 is electrically connected to the input end D1, and the second end is electrically connected to the output end D1; The first end of the electric control switch D3 is electrically connected to the input end D2, and the second end is electrically connected to the output end D2; the input end D1 and the input end D2 are respectively used to electrically connect to the first power battery and the second power battery of the electric vehicle; the output end D1 and the output end D2 are used to electrically connect to the auxiliary power supply of the electric vehicle; The auxiliary power connection circuit also includes an electric control switch D5; The first end of the electric control switch D5 is electrically connected to the second end of the electric control switch D1, and the second end of the electric control switch D5 is electrically connected to the second end of the electric control switch D3; The auxiliary power connection circuit also includes a manual switch D; the second end of the electric control switch D5 is electrically connected to the second end of the electric control switch D3 through the manual switch D; The auxiliary power connection circuit also includes an electronically controlled switch D2 and an electronically controlled switch D4; The second end of the electronically controlled switch D1 is electrically connected to the output end D1 through the electronically controlled switch D2; The second end of the electric control switch D3 is electrically connected to the output end D2 through the electric control switch D4; The auxiliary power connection circuit also includes an electric control switch D6 and a resistor D; a first end of the electric control switch D6 is electrically connected to a first end of the electric control switch D5, and a second end of the electric control switch D6 is electrically connected to a second end of the electric control switch D5 through the resistor D.

5. An electric vehicle, characterized in that: A redundant system for an electric vehicle comprising any one of claims 1 to 4.

6. An electric vehicle according to claim 5, characterized in that The electric vehicle further comprises a first motor controller, a second motor controller, a first drive motor and a second drive motor; an output terminal A1 of the motor drive circuit is electrically connected to the first motor controller, and an output terminal A2 is electrically connected to the second motor controller; the first motor controller is electrically connected to the first drive motor; the second motor controller is electrically connected to the second drive motor; The electric vehicle further includes a first oil pump inverter, a second oil pump inverter, a first hydraulic pump, a second hydraulic pump and a steering machine; an output terminal B1 of the hydraulic drive circuit is electrically connected to the first oil pump inverter, and an output terminal B2 is electrically connected to the second oil pump inverter; The first oil pump inverter is electrically connected to the first hydraulic pump; The second oil pump inverter is electrically connected to the second hydraulic pump; the first hydraulic pump and the second hydraulic pump are connected to the steering machine in parallel via a one-way valve and a hydraulic oil pipe.

7. An electric vehicle according to claim 5, characterized in that The electric vehicle further comprises a first air pump inverter, a second air pump inverter, a first air compressor, a second air compressor and an air storage cylinder; the output end C1 of the air pressure driving circuit is electrically connected to the first air pump inverter, and the output end C2 is electrically connected to the second air pump inverter; the first air pump inverter is electrically connected to the first air compressor; the second air pump inverter is electrically connected to the second air compressor; the first air compressor and the second air compressor are connected to the air storage cylinder in parallel through a one-way valve and an air pipe; The electric vehicle also includes a first DC converter, a second DC converter and an auxiliary power supply; the output end D1 of the auxiliary power supply connection circuit is electrically connected to the first DC converter, and the output end D2 is electrically connected to the second DC converter; the output ends of the first DC converter and the second DC converter are connected in parallel to the auxiliary power supply.

8. An electric vehicle according to claim 5, characterized in that The electric vehicle further comprises a first AC power inverter, a second AC power inverter, a first double-throw switch, a second double-throw switch, a seamless transfer switch, an AC power input interface, an uninterruptible power supply and an AC power output interface; the output end E1 of the power supply connection circuit is electrically connected to the first AC power inverter, and the output end E2 is electrically connected to the second AC power inverter; The first AC inverter is electrically connected to the first input terminal F1 of the first double-throw switch; The second mains inverter is electrically connected to the first input terminal G1 of the second double-throw switch; the mains input interface is electrically connected to the second input terminal F2 of the first double-throw switch and the second input terminal G2 of the second double-throw switch; The output terminal F of the first double-throw switch and the output terminal G of the second double-throw switch are respectively electrically connected to the input terminal H of the seamless transfer switch; the output terminal H of the seamless transfer switch is electrically connected to the input terminal J of the uninterruptible power supply; the output terminal J of the uninterruptible power supply is electrically connected to the AC power output interface.

Images