Integrated high-voltage circuit of electric vehicle, power supply control system and electric vehicle

Abstract

The utility model provides an integrated high-voltage circuit of an electric vehicle, a power supply control system and the electric vehicle, and relates to the technical field of vehicles, the circuit comprises a power battery energy storage module, a battery management system, an energy control system, a super capacitor energy storage module, a capacitor management system, an automatic change-over switch, a voltage stabilizing device and at least one power supply loop; the power battery energy storage module is connected with the first end of the automatic change-over switch, the super capacitor energy storage module is connected with the second end of the automatic change-over switch, and the third end of the automatic change-over switch is connected with the voltage stabilizer which is connected with at least one electricity load through at least one power supply path. The power battery energy storage module is connected with the battery management system, the super-capacitor energy storage module is connected with the capacitor management system, the battery management system and the capacitor management system are both connected with the energy control system, and the energy control system is connected with the control end of the automatic change-over switch, so that the service life of the power battery energy storage module is prolonged, and energy consumption and competitiveness of the power battery energy storage module are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an integrated high-voltage circuit, a power supply control system, and an electric vehicle. Background Art

[0002] In recent years, with the increasing emphasis on energy conservation and carbon reduction, new energy vehicles have emerged. Heavy-duty trucks are currently a significant source of pollutant emissions in the transportation industry, and promoting their electrification is an inevitable path to reducing pollution and carbon emissions.

[0003] However, due to their heavy cargo loads, new energy heavy-duty trucks are typically used in mining areas, where operating conditions are often harsh. When starting or traveling uphill, these trucks require a high output power to generate kinetic energy. This often depletes the power battery and reduces its lifespan, potentially compromising its energy efficiency and competitiveness. Utility Model Content

[0004] The purpose of this application is to provide an integrated high-voltage circuit, a power supply control system and an electric vehicle for an electric vehicle, so as to improve the service life, energy consumption and competitiveness of the power battery energy storage module existing in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] In a first aspect, an embodiment of the present application provides an integrated high-voltage circuit for an electric vehicle, comprising: a power battery energy storage module, a battery management system, an energy control system, a supercapacitor energy storage module, a capacitor management system, an automatic transfer switch, a voltage stabilizing device, and at least one power supply circuit;

[0007] The positive electrode of the power battery energy storage module is connected to the first end of the automatic transfer switch, the positive electrode of the supercapacitor energy storage module is connected to the second end of the automatic transfer switch, the third end of the automatic transfer switch is connected to the input end of the voltage stabilizing device, and the output ends of the voltage stabilizing device are respectively connected to the at least one power supply path, and the at least one power supply path is used to connect to the positive electrode of at least one electrical load. The negative electrode of the power battery energy storage module and the negative electrode of the supercapacitor energy storage module are both grounded, and the negative electrode of the power battery energy storage module and the negative electrode of the supercapacitor energy storage module are also used to connect to the negative electrode of the at least one electrical load.

[0008] The power battery energy storage module is also connected to the battery management system, the supercapacitor energy storage module is also connected to the capacitor management system, the battery management system and the capacitor management system are both connected to the energy control system, and the energy control system is also connected to the control end of the automatic transfer switch.

[0009] Optionally, the integrated high-voltage circuit further includes: a first resistor, a first switch unit, a second switch unit, and a charging device;

[0010] The positive electrode of the power battery energy storage module is connected to one end of the first switch unit, the other end of the first switch unit is connected to the positive power supply terminal of the charging device, and one end of the first switch unit is also connected to the first end of the automatic transfer switch;

[0011] The positive electrode of the supercapacitor energy storage module is connected to one end of the first resistor, the other end of the first resistor is connected to the second end of the automatic transfer switch, the other end of the first resistor is also connected to the positive power supply terminal of the charging device through the second switch unit, and the negative power supply terminal of the charging device is also grounded;

[0012] The control terminal of the first switch unit and the control terminal of the second switch unit are both connected to the control terminal of the battery management system, and the control terminal of the charging device is also connected to the energy control system.

[0013] Optionally, the integrated high-voltage circuit further includes: a first diode and a third switch unit, the positive electrode of the power battery energy storage module is further connected to the other end of the first resistor through the first diode and the third switch unit in sequence, and the control terminal of the third switch unit is connected to the control terminal of the battery management system.

[0014] Optionally, the at least one power supply circuit includes: a first power supply circuit and a second power supply circuit, the first output terminal of the voltage stabilizing device is connected to the input terminal of the first power supply circuit, and the output terminal of the first power supply circuit is used for connecting the positive electrode of the motor controller;

[0015] The second output terminal of the voltage stabilizing device is connected to the input terminal of the second power supply circuit, and the multiple output terminals of the second power supply circuit are respectively used for connecting the positive electrode of the air pump controller, the positive electrode of the oil pump controller, the positive electrode of the DC conversion device, and the positive electrode of the heating device, and the positive and negative electrodes of the DC conversion device are also connected to the low-voltage storage battery.

[0016] Optionally, the first power supply circuit includes: a fourth switch unit, a second diode, a second resistor, and a fifth switch unit;

[0017] The input terminal of the first power supply circuit is one end of the fifth switch unit, which is used for connecting the first output terminal of the voltage stabilizing device, and the other end of the fifth switch unit is the output terminal of the first power supply circuit, which is used for connecting the positive electrode of the motor controller;

[0018] After the fourth switch unit, the second diode, and the second resistor are connected in series in sequence, they are connected in parallel across both ends of the fifth switch unit;

[0019] The control terminals of the fourth switch unit and the fifth switch unit are both connected to the control terminal of the battery management system.

[0020] Optionally, the second power supply circuit includes: a sixth switch unit, a first fuse, a seventh switch unit, a third diode, a third resistor, an eighth switch unit, and a second fuse;

[0021] One end of the sixth switch unit is the input end of the second power supply circuit, the other end of the sixth switch unit is connected to one end of the first fuse, and the other end of the first fuse is the first output end of the second power supply circuit for connecting to the positive electrode of the heating device;

[0022] One end of the eighth switch unit is connected to one end of the sixth switch unit, and the other end of the eighth switch unit is also connected to one end of the second fuse. The other end of the second fuse is the second output end of the second power supply circuit for connecting to the positive electrodes of the air pump controller, the fuel pump controller, and the DC conversion device;

[0023] One end of the series connection of the seventh switch unit, the third diode, and the third resistor in sequence is connected to one end of the eighth switch unit, and the other end of the series connection is connected to the other end of the second fuse;

[0024] The control terminals of the sixth switch unit, the seventh switch unit, and the eighth switch unit are all connected to the control terminal of the battery management system.

[0025] Optionally, the integrated high-voltage circuit further includes: a drive module, a collision switch, and an airbag. The airbag is connected to the control terminal of the collision switch through the drive module, and the collision switch is connected to the ground wire of at least one electrical load.

[0026] Optionally, the integrated high-voltage circuit further includes: a voltage alarm device, a fourth resistor, and a ninth switch unit;

[0027] The first end of the voltage alarm device is connected to the other end of the fourth resistor. The first end of the voltage alarm device is also connected to one end of the ninth switch unit in sequence through the fourth resistor. The other end of the ninth switch unit is grounded, and the control terminal of the ninth switch unit is connected to the control terminal of the battery management system;

[0028] The control terminal of the voltage alarm device is also connected to the energy control system.

[0029] In a second aspect, an embodiment of the present application provides a power supply control system for an electric vehicle, including: a vehicle controller, at least one electrical load, and the integrated high-voltage circuit of the electric vehicle according to any one of the first aspects above. The battery management system, the capacitor management system, and the energy control system in the integrated high-voltage circuit are all connected to the vehicle controller, and the vehicle controller is further connected to the control end of the at least one electrical load.

[0030] In a third aspect, an embodiment of the present application provides an electric vehicle, including at least: the power supply control system according to the second aspect above.

[0031] The beneficial effects of the integrated high-voltage circuit, the power supply control system, and the electric vehicle provided by the present application are as follows:

[0032] The present application provides an integrated high-voltage circuit, a power supply control system, and an electric vehicle for an electric vehicle. Among them, the integrated high-voltage circuit of the electric vehicle can be composed of a power battery energy storage module, a battery management system, an energy control system, a supercapacitor energy storage module, a capacitor management system capacitor management unit, an automatic transfer switch, a voltage stabilizing device, and at least one power supply circuit. Among them, the positive electrode of the power battery energy storage module is connected to the first end of the automatic transfer switch, and the positive electrode of the supercapacitor energy storage module is connected to the second end of the automatic transfer switch, which is used to switch different power outputs of the power battery energy storage module and the supercapacitor energy storage module. The third end of the automatic transfer switch is connected to the input end of the voltage stabilizing device, which is used to stabilize the output electrical signal of the automatic transfer switch. The output end of the voltage stabilizing device is respectively connected to at least one power supply path, and at least one power supply path is used to connect the positive electrode of at least one electrical load. The negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are both grounded, and the negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are also used to connect the negative electrode of at least one electrical load. The power battery energy storage module is further connected to the battery management system, and the supercapacitor energy storage module is further connected to the capacitor management system. The battery management system and the capacitor management system are both connected to the energy control system, which is used to upload the information collected by the power battery energy storage module and the battery management system to the energy control system. The energy control system is further connected to the control end of the automatic transfer switch. Thus, the present application can adopt different output kinetic energy methods for different road conditions, so as to improve the discharge characteristics of the service life of the power battery energy storage module, improve the service life of the vehicle's power battery energy storage module, and improve the operation competitiveness of the electric vehicle as a whole. At the same time, the design of redundant branches is adopted. When a certain branch fails, another branch is switched to supply power externally to ensure the kinetic energy output of the other branch and improve the operation stability and safety of the vehicle as a whole. Description of the Drawings

[0033] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 Structural schematic diagram of an electric vehicle provided by an embodiment of the present application;

[0035] Figure 2 Structural schematic diagram of a power supply control system of an electric vehicle provided by an embodiment of the present application;

[0036] Figure 3 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 1 ;

[0037] Figure 4 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 2 ;

[0038] Figure 5 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 3 ;

[0039] Figure 6 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 4 ;

[0040] Figure 7 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 5 ;

[0041] Figure 8 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 6 ;

[0042] Figure 9 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 7 ;

[0043] Figure 10 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 8 ;

[0044] Figure 11 Structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 9 . Detailed implementation manners

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0047] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0048] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the utility model product is normally placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0050] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0051] The following will, in conjunction with the accompanying drawings, elaborate on some embodiments of the present application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0052] To better understand the various solutions provided by the embodiments of the present application, the following will, in turn, in conjunction with the accompanying drawings, elaborate in detail on an integrated high-voltage circuit, a power supply control system, and an electric vehicle provided by the embodiments of the present application.

[0053] Figure 1 FIG. is a schematic structural diagram of an electric vehicle provided by an embodiment of the present application. As Figure 1 shown, the electric vehicle 300 may at least include: a power supply control system 200.

[0054] Among them, the power supply control system 200 can provide an electrical signal for the normal operation of the electric vehicle 300. Among them, the electric vehicle 300 can be selected according to the actual situation. For example, the electric vehicle 300 can be selected as a new energy heavy truck.

[0055] The electric vehicle provided by the present application can be composed of at least a power supply control system. Thus, the safe power supply of the electric vehicle can be ensured to improve the reliability of the electric vehicle.

[0056] Furthermore, an example illustration of the power supply control system of the electric vehicle provided by the embodiments of the present application will be given. Figure 2 FIG. is a schematic structural diagram of a power supply control system of an electric vehicle provided by an embodiment of the present application. As Figure 2 shown, the power supply control system 200 of the electric vehicle may include: a vehicle controller 210, at least one electrical load 220, and an integrated high-voltage circuit 100 of the electric vehicle.

[0057] Among them, in the integrated high-voltage circuit 100, the battery management system, the capacitor management system, and the energy control system are all connected to the vehicle controller 210 to perform data transmission and control on the battery management system, the capacitor management system, and the energy control system in the integrated high-voltage circuit 100; the vehicle controller 210 is also connected to the control end of at least one electrical load 220 for controlling at least one electrical load 220.

[0058] Among them, the electrical load 220 can be selected according to the actual situation. For example, the electrical load 220 can be selected as: an air pump controller, an oil pump controller, a DC-DC converter, a PTC heating device, and a motor controller.

[0059] The power supply control system of the electric vehicle provided by this application can be composed of a vehicle controller, at least one electrical load, and the integrated high-voltage circuit of the electric vehicle. Among them, the battery management system, the capacitor management system, and the energy control system in the integrated high-voltage circuit are all connected to the vehicle controller, and the vehicle controller is also connected to the control terminal of at least one electrical load. Thus, the vehicle controller realizes the control of the electric vehicle.

[0060] The following continues to exemplify the integrated high-voltage circuit of the electric vehicle provided by the embodiments of this application in conjunction with the accompanying drawings. Figure 3 The structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of this application Figure 1 . As Figure 3 shown, the integrated high-voltage circuit 100 of the electric vehicle may include: a power battery energy storage module 110, a battery management system 120, an energy control system 130, a supercapacitor energy storage module 140, a capacitor management system 150, an automatic transfer switch ATSE, a voltage stabilizing device ZD, and at least one power supply circuit 160.

[0061] Among them, the positive electrode of the power battery energy storage module 110 is connected to the first end of the automatic transfer switch ATSE, and the positive electrode of the supercapacitor energy storage module 140 is connected to the second end of the automatic transfer switch ATSE, which is used to switch different energy storage modules according to different working conditions; the third end of the automatic transfer switch ATSE is connected to the input end of the voltage stabilizing device ZD to stabilize the output electrical signal of the automatic transfer switch ATSE; the output end of the voltage stabilizing device ZD is respectively connected to at least one power supply path 180, and at least one power supply path 180 is used to connect the positive electrode of at least one electrical load 220. The negative electrodes of the power battery energy storage module 110 and the supercapacitor energy storage module 140 are both grounded. The negative electrodes of the power battery energy storage module 110 and the supercapacitor energy storage module 140 are also used to connect the negative electrode of at least one electrical load 220.

[0062] The power battery energy storage module 110 is also connected to the battery management system 120 to collect the voltage, temperature, etc. of the power battery energy storage module 110; the supercapacitor energy storage module 140 is also connected to the capacitor management system 150 to collect the capacitance information, etc. on the power battery energy storage module 110; both the battery management system 120 and the capacitor management system 150 are communicatively connected to the energy control system 130 to upload the information collected by the power battery energy storage module 110 and the battery management system 120 to the energy control system 130; the energy control system 130 is also connected to the control terminal of the automatic transfer switch ATSE to control the switching of the automatic transfer switch ATSE.

[0063] Among them, the power battery energy storage module 110, as the main power source of the electric vehicle (such as a new energy heavy truck), can adopt a power battery energy storage module 110 composed of a lithium-ion battery pack.

[0064] The supercapacitor energy storage module 140 serves as an auxiliary power source to flatten the discharge curve of the power battery energy storage module 110, thereby improving the energy transfer efficiency and being used for starting, climbing, and braking energy recovery. It has high power characteristics, can perform fast charge and discharge with large current, has a long service life, and the structure of the supercapacitor energy storage module 140 can also improve the service life and discharge characteristics of the power battery energy storage module 110, increasing the service life of the power battery energy storage module 110 of the entire electric vehicle and enhancing the competitiveness of the operation of electric vehicles such as new energy heavy trucks.

[0065] The battery management system 120 is a BMS (Battery Management System, battery control system). The battery management system 120 can be used to control the closing and opening of each relay, and collect and detect the cell voltage and temperature data of the power battery energy storage module 110, etc.

[0066] It should be noted that the battery management system 120 and the capacitor management system 150 can perform charge and discharge management according to the SOC (State of Charge) of the two energy storage modules.

[0067] When a fault or other situation occurs in the integrated high-voltage circuit 100, the energy management system 130 can switch between the power battery energy storage module 110 and the supercapacitor according to the motor demand power.

[0068] The automatic transfer switch ATSE can adopt different power energy storage modules for different working conditions. For example, when starting and on a steep slope where greater kinetic energy is required, the supercapacitor energy storage module 140 can be used to provide power; when the electric vehicle is on a flat road condition, the power battery energy storage module 110 can be used to provide power, which ensures the energy consumption of the entire vehicle operation, improves the service life of the power battery energy storage module 110, and reduces the cost of the entire vehicle. Thus, with this application, when there is a problem with the power supply of the supercapacitor energy storage module 140 or the power battery energy storage module 110, the automatic transfer switch ATSE can switch to the other branch to ensure the safety of the electric vehicle.

[0069] The automatic transfer switch ATSE can be selected according to the actual situation. For example, the automatic transfer switch ATSE can be selected as an ATSE (Automatic Transfer Switching Equipment, automatic transfer switch).

[0070] The voltage stabilizing device ZD is used to stabilize the output electrical signal of the automatic transfer switch ATSE.

[0071] It should be noted that current sensors can be provided on the negative branches of the power battery energy storage module 110 and the supercapacitor energy storage module 140 to detect the real-time current of the power battery energy storage module 110 and the supercapacitor energy storage module 140.

[0072] The present application provides an integrated high-voltage circuit for an electric vehicle. The integrated high-voltage circuit of the electric vehicle can be composed of a power battery energy storage module, a battery management system, an energy control system, a supercapacitor energy storage module, a capacitor management system capacitor management unit, an automatic transfer switch, a voltage stabilizing device, and at least one power supply circuit. Among them, the positive electrode of the power battery energy storage module is connected to the first end of the automatic transfer switch, and the positive electrode of the supercapacitor energy storage module is connected to the second end of the automatic transfer switch, which is used to switch different power outputs of the power battery energy storage module and the supercapacitor energy storage module. The third end of the automatic transfer switch is connected to the input end of the voltage stabilizing device to stabilize the output electrical signal of the automatic transfer switch. The output end of the voltage stabilizing device is respectively connected to at least one power supply path, and at least one power supply path is used to connect the positive electrode of at least one electrical load. The negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are both grounded, and the negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are also used to connect the negative electrode of at least one electrical load. The power battery energy storage module is also connected to the battery management system, and the supercapacitor energy storage module is also connected to the capacitor management system. The battery management system and the capacitor management system are both connected to the energy control system to upload the information collected by the power battery energy storage module and the battery management system to the energy control system. The energy control system is also connected to the control end of the automatic transfer switch. Thus, the present application can adopt different output kinetic energy methods for different road conditions, improving the discharge characteristics and service life of the power battery energy storage module of the whole vehicle, increasing the service life of the power battery energy storage module of the whole vehicle and the driving range of the power battery of the whole vehicle, and enhancing the operation competitiveness of the electric vehicle of the whole vehicle. At the same time, with the design of redundant branches, when a certain branch fails, another branch is switched to supply power externally to ensure the kinetic energy output of the other branch, improving the operation stability and safety of the whole vehicle.

[0073] Based on Figure 3 this, the integrated high-voltage circuit of the electric vehicle provided by the embodiments of the present application will be further illustrated with reference to the accompanying drawings as follows. Figure 4 is a structural schematic Figure 2 of an integrated high-voltage circuit for an electric vehicle provided by an embodiment of the present application. Figure 4 As shown in

[0074] Among them, the positive electrode of the power battery energy storage module 110 is connected to one end of the first switch unit K1, and the other end of the first switch unit K1 is connected to the positive power supply end of the charging device 170, and is used to charge the power battery energy storage module 110 by the charging device 170 when the first switch unit K1 is closed; one end of the first switch unit K1 is also connected to the first end of the automatic transfer switch ATSE.

[0075] The positive electrode of the supercapacitor energy storage module 140 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to the second end of the automatic transfer switch ATSE, and the other end of the first resistor R1 is also connected to the positive power supply end of the charging device 170 through the second switch unit K2, and is used to charge the supercapacitor energy storage module 140 by the charging device 170 when the second switch unit K2 is closed; the negative power supply end of the charging device 170 is also grounded. Among them, the first resistor R1 is used to limit the current of the input and output electrical signals of the supercapacitor energy storage module 140.

[0076] The control ends of the first switch unit K1 and the second switch unit K2 are both connected to the control end of the battery management system 120, and are used to control the closing and opening of the first switch unit K1 and the second switch unit K2; the control end of the charging device 170 is also connected to the energy control system 130, and is used to control the charge and discharge of the charging device 170.

[0077] It should be noted that, for the sake of simplicity of understanding, the connection diagrams of all switch units to the control end of the battery management system 120 in this application are not shown in the figures, but it should not be understood as a limitation to this application.

[0078] The integrated high-voltage circuit of the electric vehicle provided by this application can also be composed of a first resistor, a first switch unit, a second switch unit, and a charging device; among them, the positive electrode of the power battery energy storage module is connected to one end of the first switch unit, the other end of the first switch unit is connected to the positive power supply end of the charging device, and one end of the first switch unit is also connected to the first end of the automatic transfer switch; the positive electrode of the supercapacitor energy storage module is connected to one end of the first resistor, the other end of the first resistor is connected to the second end of the automatic transfer switch, the other end of the first resistor is also connected to the positive power supply end of the charging device through the second switch unit, the negative power supply end of the charging device is also grounded; the control ends of the first switch unit and the second switch unit are both connected to the control end of the battery management system, and the control end of the charging device is also connected to the energy control system. Thus, this application can realize the charge and discharge of the charging device to the power battery energy storage module and the supercapacitor energy storage module.

[0079] On the Figure 4 basis, the integrated high-voltage circuit of the electric vehicle provided by the embodiments of this application will be further illustrated with reference to the accompanying drawings as follows. Figure 5Structural schematic of an integrated high-voltage circuit for an electric vehicle provided by an embodiment of the present application Figure 3 As Figure 5 shown, the integrated high-voltage circuit 100 of the electric vehicle may further include: a first diode D1 and a third switch unit K3.

[0080] Among them, the positive electrode of the power battery energy storage module 110 is also sequentially connected to the other end of the first resistor R1 through the first diode D1 and the third switch unit K3, for the power battery energy storage module 110 to charge the supercapacitor energy storage module 140; the control end of the third switch unit K3 is connected to the control end of the battery management system 120, for controlling the closing and opening of the third switch unit K3.

[0081] Among them, the first diode D1 is a unidirectional diode, to prevent the supercapacitor energy storage module 140 from discharging and affecting the power battery energy storage module 110.

[0082] For the integrated high-voltage circuit of the electric vehicle provided by the present application, the integrated high-voltage circuit may also be composed of a first diode and a third switch unit. Among them, the positive electrode of the power battery energy storage module is also sequentially connected to the other end of the first resistor through the first diode and the third switch unit, and the control end of the third switch unit is connected to the control end of the battery management system. Thus, the power battery energy storage module can realize the charging function of the supercapacitor energy storage module through the closing of the first diode and the third switch unit.

[0083] On the Figure 5 basis, the integrated high-voltage circuit of the electric vehicle provided by the embodiment of the present application will be further illustrated by combining the accompanying drawings as follows. Figure 6 Structural schematic of an integrated high-voltage circuit for an electric vehicle provided by an embodiment of the present application Figure 4 As Figure 6 shown, the at least one power supply loop 160 may include: a first power supply loop 161 and a second power supply loop 162.

[0084] Among them, the first output terminal of the voltage stabilizing device ZD is connected to the input terminal of the first power supply loop 161, and the output terminal of the first power supply loop 161 is used to connect to the positive electrode of the motor controller M1, for providing a working power supply for the motor controller M1; the second output terminal of the voltage stabilizing device ZD is connected to the input terminal of the second power supply loop 162, and multiple output terminals of the second power supply loop 162 are respectively used to connect to the positive electrodes of the air pump controller M2, the oil pump controller M3, the DC-DC converter DCDC, and the heating device PTC, for providing a working power supply for the air pump controller M2, the oil pump controller M3, the DC-DC converter DCDC, and the heating device PTC; the positive and negative electrodes of the DC-DC converter DCDC are also connected to the low-voltage battery, for charging and discharging the low-voltage battery.

[0085] Among them, the second power supply circuit 162 is a multi-in-one circuit.

[0086] It should be noted that Figure 6 in the embodiments, only the connection of one power supply circuit 160 is illustrated, and this should not be construed as a limitation to this application.

[0087] The integrated high-voltage circuit of the electric vehicle provided by this application is composed of at least one power supply circuit including a first power supply circuit and a second power supply circuit. Among them, the first output terminal of the voltage stabilizing device is connected to the input terminal of the first power supply circuit, and the output terminal of the first power supply circuit is used to connect the positive pole of the motor controller; the second output terminal of the voltage stabilizing device is connected to the input terminal of the second power supply circuit, and multiple output terminals of the second power supply circuit are respectively used to connect the positive poles of the air pump controller, the oil pump controller, the positive pole of the DC conversion device, and the positive pole of the heating device. The positive and negative poles of the DC conversion device are also connected to the low-voltage battery. Thus, this application can provide a working power supply in a timely manner when different power supply circuits are used, improving the reliability of the electric vehicle.

[0088] On the basis of Figure 6 the following continues to exemplify the integrated high-voltage circuit of the electric vehicle provided by the embodiments of this application in combination with the drawings. Figure 7 The structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of this application Figure 5 is as follows. Figure 7 As shown in

[0089] the figure, the first power supply circuit 161 includes: a fourth switch unit K4, a second diode D2, a second resistor R2, and a fifth switch unit K5.

[0090] Among them, the input terminal of the first power supply circuit 161 is one end of the fifth switch unit K5, which is used to connect the first output terminal of the voltage stabilizing device ZD, and the other end of the fifth switch unit K5 is the output terminal of the first power supply circuit 161, which is used to connect the positive pole of the motor controller M1; after the fourth switch unit K4, the second diode D2, and the second resistor R2 are connected in series in sequence, they are connected in parallel at both ends of the fifth switch unit K5; the control terminals of the fourth switch unit K4 and the fifth switch unit K5 are also connected to the control terminal of the battery management system 120, which is used to control the opening and closing of the fourth switch unit K4 and the fifth switch unit K5.

[0091] The integrated high-voltage circuit of the electric vehicle provided by the present application. The first power supply loop can be composed of a fourth switch unit, a second diode, a second resistor, and a fifth switch unit. Among them, the input end of the first power supply loop is one end of the fifth switch unit, which is used to connect the first output end of the voltage stabilizing device. The other end of the fifth switch unit is the output end of the first power supply loop, which is used to connect the positive pole of the motor controller. After the fourth switch unit, the second diode, and the second resistor are connected in series in sequence, they are connected in parallel across both ends of the fifth switch unit. The control end of the fourth switch unit and the control end of the fifth switch unit are also connected to the control end of the battery management system. Thus, the present application can achieve safe power supply to the motor controller through the fourth switch unit, the second diode, the second resistor, and the fifth switch unit.

[0092] Based on Figure 7 , the integrated high-voltage circuit of the electric vehicle provided by the embodiments of the present application will be further illustrated by combining with the accompanying drawings as follows. Figure 8 The structural schematic of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 6 . As Figure 8 shown, the second power supply loop 162 may include: a sixth switch unit K6, a first fuse FU1, a seventh switch unit K7, a third diode D3, a third resistor R3, an eighth switch unit K8, and a second fuse FU2.

[0093] Among them, one end of the sixth switch unit K6 is the input end of the second power supply loop 162. The other end of the sixth switch unit K6 is connected to one end of the first fuse FU1. The other end of the first fuse FU1 is the first output end of the second power supply loop 162, which is used to connect the positive pole of the heating device PTC and provide a working power supply for the heating device PTC. One end of the eighth switch unit K8 is connected to one end of the sixth switch unit K6. The other end of the eighth switch unit K8 is also connected to one end of the second fuse FU2. The other end of the second fuse FU2 is the second output end of the second power supply loop 162, which is used to connect the positive poles of the air pump controller M2, the oil pump controller M3, and the DC-DC converter DCDC, and provide a working power supply for the air pump controller M2, the oil pump controller M3, and the DC-DC converter DCDC. One end of the series connection of the seventh switch unit K7, the third diode D3, and the third resistor R3 in sequence is connected to one end of the eighth switch unit K8, and the other end of the series connection is connected to the other end of the second fuse FU2. The control ends of the sixth switch unit K6, the seventh switch unit K7, and the eighth switch unit K8 are all connected to the control end of the battery management system 120, which is used to control the closing and opening of the sixth switch unit K6, the seventh switch unit K7, and the eighth switch unit K8.

[0094] Among them, in the second power supply circuit 162, by adding a first fuse FU1 and a second fuse FU2, it is used to protect the safety of the integrated high-voltage circuit 100 when a short circuit occurs in the second power supply circuit 162.

[0095] It should be noted that when the second power supply circuit 162 is used to charge the air pump controller M2, the oil pump controller M3, and the DC-DC converter DCDC, first close the seventh switch unit K7. When the output voltage of any one of the air pump controller M2, the oil pump controller M3, and the DC-DC converter DCDC is equal to the input voltage of the second power supply circuit 162, disconnect the seventh switch unit K7 and close the eighth switch unit K8.

[0096] For the integrated high-voltage circuit of the electric vehicle provided by this application, the second power supply circuit can be composed of a sixth switch unit, a first fuse, a seventh switch unit, a third diode, a third resistor, an eighth switch unit, and a second fuse; among them, one end of the sixth switch unit is the input end of the second power supply circuit, the other end of the sixth switch unit is connected to one end of the first fuse, and the other end of the first fuse is the first output end of the second power supply circuit, which is used to connect the positive pole of the heating device; one end of the eighth switch unit is connected to one end of the sixth switch unit, and the other end of the eighth switch unit is also connected to one end of the second fuse, and the other end of the second fuse is the second output end of the second power supply circuit, which is used to connect the positive poles of the air pump controller, the oil pump controller, and the DC-DC converter; one end of the series connection of the seventh switch unit, the third diode, and the third resistor in sequence is connected to one end of the eighth switch unit, and the other end of the series connection is connected to the other end of the second fuse; the control ends of the sixth switch unit, the seventh switch unit, and the eighth switch unit are also connected to the control end of the battery management system. Thus, this application can realize the safe power supply to the air pump controller, the oil pump controller, the DC-DC converter, and the heating device through the sixth switch unit, the first fuse, the seventh switch unit, the third diode, the third resistor, the eighth switch unit, and the second fuse.

[0097] On the Figure 8 basis, the integrated high-voltage circuit of the electric vehicle provided by the embodiments of this application will be further illustrated with reference to the accompanying drawings as follows. Figure 9 is a schematic structure of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of this application Figure 7 . As Figure 9 shown, the integrated high-voltage circuit 100 may further include: a drive module 180, a crash switch Pyrofuse, and an airbag 190.

[0098] Among them, the airbag 190 is connected to the control end of the collision switch Pyrofuse through the driving module 180, and is used to control the closing and opening of the collision switch Pyrofuse; the collision switch Pyrofuse is connected to the ground wire of at least one electrical load 220.

[0099] Among them, the collision switch Pyrofuse is used to actively protect the integrated high-voltage circuit 100. If an electric vehicle collision occurs, or the integrated high-voltage circuit 100 is short-circuited, or other safety failures occur, the connection with the energy storage module end (such as the power battery energy storage module and the supercapacitor energy storage module) can be cut off within a very short preset time, reducing the probability of dangerous accidents.

[0100] It should be noted that under normal circumstances, the collision switch Pyrofuse is in the closed state and only disconnects in the event of a collision or other situations to cut off the integrated high-voltage circuit and protect the mechanical safety of the electric vehicle and the safety of the operator.

[0101] The integrated high-voltage circuit of the electric vehicle provided by the present application can also be composed of a driving module, a collision switch, and an airbag. Among them, the airbag is connected to the control end of the collision switch through the driving module, and the collision switch is connected to the ground wire of at least one electrical load. Thus, the power consumption safety of the integrated high-voltage circuit 100 in the event of a collision or other situations can be ensured, and the reliability and safety of the electric vehicle can be improved.

[0102] On the Figure 9 basis, the integrated high-voltage circuit of the electric vehicle provided by the embodiments of the present application will be further described by way of example in conjunction with the accompanying drawings as follows. Figure 10 is a schematic structure of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 8 As Figure 10 shown, the integrated high-voltage circuit 100 may further include: a voltage alarm device 191, a fourth resistor R4, and a ninth switch unit K9.

[0103] One end of the voltage alarm device 191 is connected to the other end of the fourth resistor R4. One end of the voltage alarm device 191 is also sequentially connected to one end of the ninth switch unit K9 through the fourth resistor R4. The other end of the ninth switch unit K9 is grounded, and the control end of the ninth switch unit K9 is connected to the control end of the battery management system 120; the control end of the voltage alarm device 191 is also connected to the energy control system 130.

[0104] In a possible implementation embodiment, when the integrated high-voltage circuit 100 is powered off, the voltage alarm device 191 is used to integrate the high-voltage circuit. The supercapacitor energy storage module 140 will store electricity. The ninth switch unit K9 is used to release the remaining electricity of the supercapacitor energy storage module 140 to avoid safety accidents caused by residual voltage. At the same time, the voltage alarm device is also used to detect whether there is voltage between the positive and negative poles of the supercapacitor energy storage module 140 and the ground, and measure whether the electricity has been released completely.

[0105] The integrated high-voltage circuit of the electric vehicle provided by the present application can also be composed of a voltage alarm device, a fourth resistor, and a ninth switch unit; one end of the voltage alarm device is connected to the other end of the fourth resistor, and one end of the voltage alarm device is also sequentially connected to one end of the ninth switch unit through the fourth resistor, and the other end of the ninth switch unit is grounded, and the control end of the ninth switch unit is connected to the control end of the battery management system; the control end of the voltage alarm device is also connected to the energy control system. Thus, the present application can be used to detect the redundant power when the integrated high-voltage circuit is powered off, ensuring the safety and reliability of the electric vehicle.

[0106] On the basis of Figure 10 the following continues to exemplify the integrated high-voltage circuit of the electric vehicle provided by the embodiments of the present application in combination with the accompanying drawings. Figure 11 is a schematic diagram of the structure of an integrated high-voltage circuit of an electric vehicle provided by an embodiment of the present application Figure 9 As Figure 11 shown, the integrated high-voltage circuit 100 may further include: a manual maintenance switch MSD and a tenth switch unit K10.

[0107] Among them, one end of the manual maintenance switch MSD is connected to the positive pole of the power battery energy storage module 110, and the other end of the manual maintenance switch MSD is connected to the first end of the automatic transfer switch ATSE and one end of the first switch unit K1, and is used to manually disconnect the integrated high-voltage circuit 100 when repairing the integrated high-voltage circuit 100. The collision switch Pyrofuse is grounded through the tenth switch unit K10.

[0108] Among them, the tenth switch unit K10 is the high-voltage main negative circuit.

[0109] It should be noted that the manual maintenance switch MSD is normally in a closed state.

[0110] The integrated high-voltage circuit of the electric vehicle provided by the present application can also be composed of a manual maintenance switch and a tenth switch unit. Thus, the integrated high-voltage circuit provided by the present application can be manually disconnected for maintenance when needed.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated high-voltage circuit for an electric vehicle, characterized in that, Comprising: A power battery energy storage module, a battery management system, an energy control system, a supercapacitor energy storage module, a capacitor management system, an automatic transfer switch, a voltage stabilizing device, and at least one power supply circuit; Wherein, the positive electrode of the power battery energy storage module is connected to the first end of the automatic transfer switch, the positive electrode of the supercapacitor energy storage module is connected to the second end of the automatic transfer switch, the third end of the automatic transfer switch is connected to the input end of the voltage stabilizing device, the output end of the voltage stabilizing device is respectively connected to at least one power supply path, the at least one power supply path is used to connect the positive electrode of at least one electrical load, the negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are both grounded, and the negative electrodes of the power battery energy storage module and the supercapacitor energy storage module are also used to connect the negative electrode of the at least one electrical load; The power battery energy storage module is further connected to the battery management system, the supercapacitor energy storage module is further connected to the capacitor management system, both the battery management system and the capacitor management system are connected to the energy control system, and the energy control system is further connected to the control end of the automatic transfer switch.

2. The integrated high-voltage circuit of an electric vehicle according to claim 1, wherein, The integrated high-voltage circuit further includes: a first resistor, a first switch unit, a second switch unit, and a charging device; The positive electrode of the power battery energy storage module is connected to one end of the first switch unit, the other end of the first switch unit is connected to the positive power supply terminal of the charging device, and one end of the first switch unit is also connected to the first end of the automatic transfer switch; The positive electrode of the supercapacitor energy storage module is connected to one end of the first resistor, the other end of the first resistor is connected to the second end of the automatic transfer switch, the other end of the first resistor is also connected to the positive power supply terminal of the charging device through the second switch unit, and the negative power supply terminal of the charging device is also grounded; The control ends of the first switch unit and the second switch unit are both connected to the control end of the battery management system, and the control end of the charging device is also connected to the energy control system.

3. The integrated high-voltage circuit of an electric vehicle according to claim 2, characterized in that, The integrated high-voltage circuit further includes: a first diode and a third switch unit, the positive electrode of the power battery energy storage module is further connected to the other end of the first resistor through the first diode and the third switch unit in sequence, and the control end of the third switch unit is connected to the control end of the battery management system.

4. The integrated high-voltage circuit of an electric vehicle according to claim 1, characterized in that, The at least one power supply circuit includes: a first power supply circuit and a second power supply circuit, the first output end of the voltage stabilizing device is connected to the input end of the first power supply circuit, and the output end of the first power supply circuit is used to connect the positive electrode of the motor controller; The second output end of the voltage stabilizing device is connected to the input end of the second power supply circuit, and multiple output ends of the second power supply circuit are respectively used to connect the positive electrodes of an air pump controller, an oil pump controller, a DC conversion device, and a heating device, and the positive and negative electrodes of the DC conversion device are also connected to a low-voltage storage battery.

5. The integrated high-voltage circuit of an electric vehicle according to claim 4, characterized in that, The first power supply circuit includes: a fourth switch unit, a second diode, a second resistor, and a fifth switch unit; The input end of the first power supply circuit is one end of the fifth switch unit, which is used to connect the first output end of the voltage stabilizing device. The other end of the fifth switch unit is the output end of the first power supply circuit, which is used to connect the positive pole of the motor controller. After the fourth switch unit, the second diode and the second resistor are connected in series in sequence, and are connected in parallel across both ends of the fifth switch unit. The control end of the fourth switch unit and the control end of the fifth switch unit are both connected to the control end of the battery management system.

6. The integrated high-voltage circuit of an electric vehicle according to claim 4, characterized in that, The second power supply circuit includes: a sixth switch unit, a first fuse, a seventh switch unit, a third diode, a third resistor, an eighth switch unit, and a second fuse. One end of the sixth switch unit is the input end of the second power supply circuit. The other end of the sixth switch unit is connected to one end of the first fuse. The other end of the first fuse is the first output end of the second power supply circuit, which is used to connect the positive pole of the heating device. One end of the eighth switch unit is connected to one end of the sixth switch unit. The other end of the eighth switch unit is also connected to one end of the second fuse. The other end of the second fuse is the second output end of the second power supply circuit, which is used to connect the positive poles of the air pump controller, the oil pump controller, and the DC conversion device. One end of the series connection of the seventh switch unit, the third diode, and the third resistor in sequence is connected to one end of the eighth switch unit, and the other end of the series connection is connected to the other end of the second fuse. The control ends of the sixth switch unit, the seventh switch unit, and the eighth switch unit are all connected to the control end of the battery management system.

7. The integrated high-voltage circuit of an electric vehicle according to claim 1, characterized in that, The integrated high-voltage circuit further includes: a driving module, a collision switch, and an airbag. The airbag is connected to the control end of the collision switch through the driving module. The collision switch is connected to the ground wire of at least one electrical load.

8. The integrated high-voltage circuit of an electric vehicle according to claim 1, characterized in that, The integrated high-voltage circuit further includes: a voltage alarm device, a fourth resistor, and a ninth switch unit. The first end of the voltage alarm device is connected to the other end of the fourth resistor. The first end of the voltage alarm device is also connected to one end of the ninth switch unit in sequence through the fourth resistor. The other end of the ninth switch unit is grounded. The control end of the ninth switch unit is connected to the control end of the battery management system. The control end of the voltage alarm device is also connected to the energy control system.

9. A power supply control system for an electric vehicle, characterized in that, Including: A vehicle controller, at least one electrical load, and the integrated high-voltage circuit of the electric vehicle according to any one of claims 1 to 8 above. In the integrated high-voltage circuit, the battery management system, the capacitor management system, and the energy control system are all connected to the vehicle controller. The vehicle controller is also connected to the control end of the at least one electrical load.

10. An electric vehicle, characterized in that, At least including: The power supply control system according to claim 9 above.

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