High-voltage power distribution system and vehicle

Abstract

The utility model discloses a high-voltage power distribution system and a vehicle. The system comprises a power battery device and a high-voltage power distribution device, and the high-voltage power distribution device comprises a first power distribution branch, a second power distribution branch and a generator control module. Wherein the first power distribution branch is respectively connected with a positive battery interface of the power battery device and the first motor control module, and the power battery supplies power to the first motor control module through the first power distribution branch; the second power distribution branch is connected with the positive battery interface, the second motor control module and the generator control module, the power battery supplies power to the second motor control module through the second power distribution branch, and the generator control module supplies electric energy output by the generator to the second motor control module and / or the power battery through the second power distribution branch. And the output electric energy of the generator is provided for the first motor control module through the first power distribution branch and the second power distribution branch. The system can meet the power supply requirement of a high-power motor, and is wide in application scene.

Description

Technical Field

[0001] The utility model relates to the field of vehicle power distribution, in particular to a high-voltage power distribution system and a vehicle. Background Art

[0002] With the development of new energy vehicle technology, the power supply demand of vehicles has gradually increased, which has also brought great pressure to the power distribution system of vehicles. At present, the power distribution system in the relevant technology usually includes a power battery, an integrated drive controller (including a motor drive controller, an oil pump module, an air pump module, etc.), and load components. The power distribution system is connected to the integrated drive controller through a contactor. When the vehicle is powered on, the power distribution system can be powered on through the layout of the contactors in the power battery and the drive integrated controller and the opening and closing timing. The disadvantage of this related technology is that the power supply capacity of the integrated drive controller is limited, and it is difficult to meet the power supply needs of high-power motors, thereby limiting the applicable scenarios of the power distribution system and making the applicability of the power distribution system poor. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the first purpose of the utility model is to propose a high-voltage power distribution system, by setting a first power distribution branch and a second power distribution branch in the high-voltage power distribution device of the system, the power battery can supply power to the first motor control module through the first power distribution branch, and supply power to the second motor control module through the second power distribution branch, and the system is also provided with a generator control module, the generator module can provide the power of the generator to the first motor control module, the second motor control module and / or the power battery, thereby optimizing the system's power supply capacity for the motor, so that the system can meet the power supply requirements of high-power motors, and can adapt to a variety of models such as pure electric and extended-range. In addition, the two distribution branches are set separately, so that the failure of a single motor control module will not affect other power supply functions of the high-voltage power distribution system, thereby effectively improving the applicability and reliability of the power distribution system.

[0004] The second objective of the present invention is to provide a vehicle.

[0005] To achieve the above-mentioned purpose, the first embodiment of the utility model proposes a high-voltage power distribution system, which is applied to a target device. The system includes a power battery device and a high-voltage power distribution device. The power battery device includes a power battery. The high-voltage power distribution device includes: a first power distribution branch, the first power distribution branch is respectively connected to the positive battery interface of the power battery device and the first motor control module of the target device, wherein the power battery supplies power to the first motor control module through the first power distribution branch, so that the first motor control module drives the first drive motor of the target device to work; a second power distribution branch and a generator control module, the second power distribution branch is respectively connected to the positive battery interface, the second motor control module of the target device and the generator control module, wherein the power battery supplies power to the second motor control module through the second power distribution branch, so that the second motor control module drives the second drive motor of the target device to work, the generator control module provides the electric energy output by the generator of the target device to the second motor control module and / or the power battery through the second power distribution branch, and the generator control module also provides the electric energy output by the generator to the first motor control module through the first power distribution branch and the second power distribution branch.

[0006] According to the high-voltage power distribution system of the utility model, by setting the first power distribution branch and the second power distribution branch in the high-voltage power distribution device of the system, the power battery can supply power to the first motor control module through the first power distribution branch, and supply power to the second motor control module through the second power distribution branch. At the same time, the system is also provided with a generator control module, and the generator module can provide the power of the generator to the first motor control module, the second motor control module and / or the power battery, thereby optimizing the system's power supply capacity for the motor, enabling the system to meet the power supply requirements of high-power motors, and thus being able to adapt to a variety of vehicle models such as pure electric and extended-range vehicles. In addition, the two power distribution branches are set separately, so that the failure of a single motor control module will not affect other power supply functions of the high-voltage power distribution system, thereby effectively improving the applicability and reliability of the power distribution system.

[0007] According to one embodiment of the utility model, the first power distribution branch includes a first positive contactor and a first pre-charging circuit, one end of the first positive contactor is connected to the positive battery interface, the other end of the first positive contactor is connected to the first motor control module, and the first pre-charging circuit is connected in parallel with the first positive contactor; the second power distribution branch includes a second positive contactor and a second pre-charging circuit, one end of the second positive contactor is connected to the positive battery interface, the other end of the second positive contactor is respectively connected to the second motor control module and the generator control module, and the second pre-charging circuit is connected in parallel with the second positive contactor.

[0008] According to one embodiment of the utility model, the high-voltage power distribution device also includes: a third power distribution branch, a voltage conversion module, an oil pump module and an air pump module, the third power distribution branch is respectively connected to the positive battery interface, the voltage conversion module, the oil pump module and the air pump module, wherein the power battery supplies power to the voltage conversion module, the oil pump module and the air pump module through the third power distribution branch, so that the voltage conversion module charges the battery, the oil pump module drives the steering system to work, and the air pump module drives the brake air pump to work.

[0009] According to one embodiment of the utility model, the third power distribution branch includes a third positive contactor and a third pre-charging circuit, one end of the third positive contactor is connected to the positive battery interface, the other end of the third positive contactor is respectively connected to the voltage conversion module, the oil pump module and the air pump module, and the third pre-charging circuit is connected in parallel with the third positive contactor.

[0010] According to one embodiment of the utility model, the high-voltage power distribution device also includes: a fourth distribution branch and a fifth distribution branch, the fourth distribution branch is respectively connected to the positive battery interface and the air-conditioning compressor, the fifth distribution branch is respectively connected to the positive battery interface, the heating module and the defrost module, wherein the power battery supplies power to the air-conditioning compressor through the fourth distribution branch, and supplies power to the heating module and the defrost module through the fifth distribution branch; or, a sixth distribution branch, the sixth distribution branch is respectively connected to the positive battery interface, the air-conditioning compressor, the heating module and the defrost module, wherein the power battery supplies power to the air-conditioning compressor, the heating module and the defrost module through the sixth distribution branch.

[0011] According to one embodiment of the utility model, the fourth power distribution branch includes a fourth positive contactor and a fourth pre-charging circuit, one end of the fourth positive contactor is connected to the positive battery interface, the other end of the fourth positive contactor is connected to the air-conditioning compressor, and the fourth pre-charging circuit is connected to the fourth positive contactor; the fifth power distribution branch includes a fifth positive contactor, one end of the fifth positive contactor is connected to the positive battery interface, and the other end of the fifth positive contactor is respectively connected to the heating module and the defrost module; the sixth power distribution branch includes a sixth positive contactor and a fifth pre-charging circuit, one end of the sixth positive contactor is connected to the positive battery interface, the other end of the sixth positive contactor is respectively connected to the air-conditioning compressor, the heating module and the defrost module, and the fifth pre-charging circuit is connected to the sixth positive contactor.

[0012] According to one embodiment of the utility model, the high-voltage power distribution device also includes: a seventh power distribution branch, the seventh power distribution branch is respectively connected to the positive battery interface and the external power supply interface, wherein the power battery supplies power to the external power supply interface through the seventh power distribution branch.

[0013] According to one embodiment of the utility model, the seventh power distribution branch includes a seventh positive contactor and a sixth pre-charging circuit, the two ends of the seventh positive contactor are respectively connected to the positive battery interface and the external power supply interface, and the sixth pre-charging circuit is connected in parallel with the seventh positive contactor.

[0014] According to one embodiment of the utility model, the power battery device also includes: a main positive contactor, one end of the main positive contactor is connected to the positive pole of the power battery, and the other end of the main positive contactor is connected to the positive battery interface; a charging positive contactor and a charging negative contactor, the two ends of the charging positive contactor are respectively connected to the other end of the main positive contactor and the positive charging interface of the power battery device, the two ends of the charging negative contactor are respectively connected to the negative pole of the power battery and the negative charging interface of the power battery device, and the negative pole of the power battery is also connected to the negative battery interface of the power battery device.

[0015] According to one embodiment of the utility model, the power battery device further includes: a main negative contactor, one end of the main negative contactor is respectively connected to the negative electrode of the power battery and one end of the charging negative contactor, and the other end of the main negative contactor is connected to the negative battery interface.

[0016] According to one embodiment of the utility model, the power battery device further includes: a pre-detection circuit, the pre-detection circuit includes a pre-detection resistor and a pre-detection contactor connected in series, the pre-detection circuit is connected in parallel with the main negative contactor, and is configured to detect whether the main positive contactor has a sticking fault.

[0017] In order to achieve the above-mentioned object, a second embodiment of the present utility model provides a vehicle, including the above-mentioned high-voltage power distribution system.

[0018] According to the vehicle of the embodiment of the utility model, the power of the vehicle drive motor is more selective through the aforementioned high-voltage power distribution system, thereby improving the flexibility of vehicle configuration and increasing the power supply reliability.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a high voltage power distribution system according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a high-voltage power distribution device according to an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a high-voltage power distribution device according to another embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a high-voltage power distribution device according to another embodiment of the utility model;

[0024] Figure 5It is a structural schematic diagram of a power battery device according to another embodiment of the utility model;

[0025] Figure 6 The figure is a schematic structural diagram of a vehicle according to an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The high voltage power distribution system and vehicle provided in the embodiments of the present utility model are described below with reference to the accompanying drawings.

[0028] Figure 1 FIG. 1 is a schematic diagram of a high voltage power distribution system 100 according to an embodiment of the present invention. Figure 1 As shown, the system 100 includes a power battery device 110 and a high-voltage power distribution device 120. The power battery device 110 includes a power battery BAT, and the high-voltage power distribution device 120 includes: a first power distribution branch 121, a second power distribution branch 122 and a generator control module 123.

[0029] The first power distribution branch 121 is respectively connected to the positive battery interface BATZ of the power battery device 110 and the first motor control module 200 of the target device 1000, wherein the power battery BAT supplies power to the first motor control module 200 through the first power distribution branch 121, so that the first motor control module 200 drives the first drive motor M1 of the target device 1000 to work; the second power distribution branch 122 is respectively connected to the positive battery interface BATZ, the second motor control module 300 of the target device 1000 and the generator control module 123, wherein the power The power battery BAT supplies power to the second motor control module 300 through the second distribution branch 122 so that the second motor control module 300 drives the second drive motor M2 of the target device 1000 to work. The generator control module 123 provides the electric energy output by the generator G of the target device 1000 to the second motor control module 300 and / or the power battery BAT through the second distribution branch 122. The generator control module 123 also provides the electric energy output by the generator G to the first motor control module 200 through the first distribution branch 121 and the second distribution branch 122.

[0030] Specifically, the high-voltage power distribution system 100 can be applied to a variety of target devices 1000 having a drive motor and a generator, such as an extended-range, pure electric new energy vehicle, etc. For example, when the target device 1000 is an extended-range new energy vehicle, the system 100 can be used to distribute power to the drive motor and generator inside the vehicle so as to realize the driving function and the extended-range function of the vehicle. When the driving function needs to be realized, the first distribution branch 121 and the second distribution branch 122 are turned on. At this time, the power battery BAT can supply power to the first motor control module 200 of the target device 1000 through the first distribution branch 121, so that the first motor control module 200 drives the first drive motor M1 to work. The power battery BAT can also supply power to the second motor control module 300 of the target device 1000 through the second distribution branch 122, so that the second motor module 200 drives the second drive motor M2 to work, thereby enabling the vehicle to operate normally. Furthermore, during vehicle operation, when a power supply failure occurs in one of the first motor control module 200 and the second motor control module 300, the other control module can still provide stable power supply, thereby enhancing the power supply capacity and reliability of the system 100 for the motor.

[0031] Continue to refer Figure 1 As shown, the second power distribution branch 122 is also connected to the generator control module 123. When the vehicle turns on the range extension function, the generator control module 123 works. At this time, the generator control module 123 can provide the power output of the generator G of the target device 1000 to the power battery BAT through the second power distribution branch 122 to charge the power battery BAT and realize the range extension function. At the same time, the generator control module 123 can also provide the power output of the generator G to the second motor control module 300 through the second power distribution branch 122. In addition, the generator control module 123 can also provide the power output of the generator G to the first motor control module 200 through the second power distribution branch 122 and the first power distribution branch 121, so that the first motor control module 300 and the second motor control module 300 can both draw power from the power battery BAT and the generator G at the same time. When the power battery BAT is unable to provide stable power supply to the first motor control module 200 and the second motor control module 300 due to problems such as too low voltage, the generator G can maintain stable power supply to the second motor control module 300, thereby making the power supply reliability of the second drive motor M2 higher and less prone to power supply abnormalities such as power failure, further improving the reliability of the system 100.

[0032] It should be noted that in the embodiment of the utility model, the system can control the connection relationship between the generator control module 123 and the second motor control module 300 and the power battery BAT through the conduction relationship of the second distribution branch 122 to achieve the distribution of the electric energy of the generator G. For example, the second distribution branch 122 can provide the electric energy output by the generator G to the second motor control module 300 and the power battery BAT at the same time through the second distribution branch 122, or provide it to one of the second motor control module 300 and the power battery BAT through the second distribution branch 122. The specific details can be determined according to the control strategy of the vehicle and are not limited here. In addition, the high-voltage distribution system 100 can also be applied to other devices with generators and drive motors. The extended-range new energy vehicle in the embodiment of the utility model is exemplary and is not a limitation to this application.

[0033] In the above embodiment, by setting the first distribution branch and the second distribution branch in the high-voltage distribution device of the system, the power battery can supply power to the first motor control module through the first distribution branch, and supply power to the second motor control module through the second distribution branch. At the same time, the system is also provided with a generator control module, which can provide the power of the generator to the first motor control module, the second motor control module and / or the power battery, thereby optimizing the system's power supply capacity for the motor, enabling the system to meet the power supply requirements of high-power motors, and thus being able to adapt to a variety of vehicle models such as pure electric and extended-range vehicles. In addition, the two distribution branches are set separately, so that the failure of a single motor control module will not affect other power supply functions of the high-voltage distribution system, thereby effectively improving the applicability and reliability of the distribution system.

[0034] In some embodiments, reference Figure 2 As shown, the first power distribution branch 121 includes a first positive contactor JZ1 and a first pre-charging circuit YC1. Among them, one end of the first positive contactor JZ1 is connected to the positive battery interface BATZ, the other end of the first positive contactor JZ1 is connected to the first motor control module 200, and the first pre-charging circuit YC1 is connected in parallel with the first positive contactor JZ1; the second power distribution branch 122 includes a second positive contactor JZ2 and a second pre-charging circuit YC2, one end of the second positive contactor JZ2 is connected to the positive battery interface BATZ, the other end of the second positive contactor JZ2 is respectively connected to the second motor control module 300 and the generator control module 123, and the second pre-charging circuit YC2 is connected in parallel with the second positive contactor JZ2.

[0035] Specifically, the first motor control module 200 and the second motor control module 300 usually include an inverter circuit to invert the high-voltage direct current provided by the power battery BAT into alternating current to drive the corresponding drive motor to operate. Therefore, the first motor control module 200 and the second motor control module 300 usually have capacitive elements inside. When the first motor control module 200 and the second motor control module 300 are powered on, if the first positive contactor JZ1 and the second positive contactor JZ2 are directly closed. The internal capacitive element will generate a large impact current, thereby damaging the circuit. Therefore, the system 100 is provided with a first pre-charging circuit YC1 in parallel with the first positive contactor JZ1 in the first distribution branch 121, and a second pre-charging circuit YC2 in parallel with the second positive contactor JZ2 is provided in the second distribution branch 122. When the first motor control module 200 is powered on, the system 100 can pre-charge the capacitive elements inside the first motor control module 200 through the first pre-charging circuit YC1. After the pre-charging is completed, the system 100 controls the first positive contactor JZ1 to close, so that the power battery BAT is connected to the first motor control module 200 through the first positive contactor JZ1, so as to avoid the impact current inside the first motor control module 200, thereby improving the safety of the system 100.

[0036] It should be noted that the principle of the second pre-charging circuit YC2 in the second power distribution branch 121 is similar to the principle of the first pre-charging circuit YC1 described above, and will not be described in detail here.

[0037] Optional, reference Figure 2 As shown, the first pre-charging circuit YC1 and the second pre-charging circuit YC2 may include: a pre-charging resistor RYC and a pre-charging positive contactor JZYC, and the pre-charging positive contactor JZYC and the pre-charging resistor RYC are connected in series and then connected in parallel at both ends of the corresponding positive contactor. The working principle of the pre-charging resistor RYC and the pre-charging positive contactor JZYC is described below by taking the first pre-charging circuit YC1 as an example. When it is necessary to power on the first motor control module 200, the external controller may first control the pre-charging positive contactor JZYC to close, and at this time, the power battery BAT may be connected to the first motor control module 200 at the rear end through the pre-charging resistor RYC. Subsequently, the external controller may detect whether the motor side voltage of the first pre-charging circuit YC1 rises to a preset voltage after a delay of a preset time. Wherein, the preset time and the preset voltage may be based on actual tests, for example, the preset time may be 2s, and the preset voltage may be 95% of the power battery voltage. When the motor side voltage rises to the preset voltage after a delay of 2s, it indicates that the pre-charging of the first motor control module 200 is completed at this time, and no substantial charging current will be generated. At this time, the external controller can control the pre-charge positive contactor JZYC to be disconnected, and control the first positive contactor JZ1 to be closed, so that the power battery BAT can normally supply power to the first motor control module 200. Thus, the pre-charge power-on process for the first motor control module 200 is realized.

[0038] In some embodiments, reference Figure 3 As shown, the high-voltage power distribution device 120 also includes: a third power distribution branch 124, a voltage conversion module 125, an oil pump module 126 and an air pump module 127, and the third power distribution branch 124 is respectively connected to the positive battery interface BATZ, the voltage conversion module 125, the oil pump module 126 and the air pump module 127, wherein the power battery BAT supplies power to the voltage conversion module 125, the oil pump module 126 and the air pump module 127 through the third power distribution branch 124, so that the voltage conversion module 125 charges the battery 400, the oil pump module 126 drives the steering system 500 to work, and the air pump module 127 drives the brake air pump 600 to work.

[0039] Specifically, the voltage conversion module 125 is mainly used to charge the battery 400 using the high voltage electricity provided by the power battery BAT, so as to provide low-voltage direct current to other equipment in the vehicle; the oil pump module 126 is mainly used to drive the vehicle steering system 500 to work normally, and the air pump module 127 is mainly used to drive the brake air pump 600 to work. The high-voltage distribution device 120 can distribute power to these three modules 125 by setting a third distribution branch 124 internally, so that the system 100 can integrate the power distribution functions of multiple functional modules in the vehicle, reduce the number of contactors required, and thus reduce the hardware cost of the system.

[0040] Optionally, the third power distribution branch 124 includes a third positive contactor JZ3 and a third pre-charging circuit YC3, one end of the third positive contactor JZ3 is connected to the positive battery interface BATZ, the other end of the third positive contactor JZ3 is respectively connected to the voltage conversion module 125, the oil pump module 126 and the air pump module 127, and the third pre-charging circuit YC3 is connected in parallel with the third positive contactor JZ3.

[0041] Specifically, since the voltage conversion module 125, the oil pump module 126 and the air pump module 127 may also have capacitive elements inside, a third pre-charging circuit YC3 is also provided in the third power distribution branch 124 to realize the pre-charging function when the system 100 powers on the voltage conversion module 125, the oil pump module 126 and the air pump module 127. The specific principle is similar to that of the first power distribution branch 124, and will not be described in detail here.

[0042] Optional, reference Figure 3As shown, the high-voltage power distribution device 120 also includes: a fourth power distribution branch 128 and a fifth power distribution branch 129, the fourth power distribution branch 128 is respectively connected to the positive battery interface BATZ and the air-conditioning compressor 700, and the fifth power distribution branch 129 is respectively connected to the positive battery interface BATZ, the heating module 800 and the defrosting module 900, wherein the power battery BAT supplies power to the air-conditioning compressor 700 through the fourth power distribution branch 128, and supplies power to the heating module 800 and the defrosting module 900 through the fifth power distribution branch 129; or, refer to Figure 4 As shown, the sixth power distribution branch 1210 is respectively connected to the positive battery interface BATZ, the air-conditioning compressor 700, the heating module 800 and the defrost module 900, wherein the power battery BAT supplies power to the air-conditioning compressor 700, the heating module 800 and the defrost module 900 through the sixth power distribution branch 1210.

[0043] Specifically, the heating module 800, the defrost module 900 and the air-conditioning compressor 700 are mainly used to provide the vehicle with heating, defrosting and electric air-conditioning functions. Compared with the voltage conversion module 125, the oil pump module 126 and the air pump module 127, which are the three necessary functions for the operation of the vehicle, the heating module 800, the defrost module 900 and the air-conditioning compressor 700 are mainly used to provide the vehicle with non-essential functions for operation. Therefore, when some modules in the heating module 800, the defrost module 900 and the air-conditioning compressor 700 fail to operate, the vehicle can still maintain normal driving. Therefore, a sixth distribution branch 1210 can be set in the high-voltage distribution device 120, such as Figure 3 As shown, the power battery BAT can simultaneously supply power to the air-conditioning compressor 700, the heating module 800 and the defrosting module 900 through the sixth power distribution branch 1210, so that multiple modules share one power distribution branch to reduce the hardware cost of the system 100. A fourth power distribution branch 128 and a fifth power distribution branch 129 can also be set in the high-voltage power distribution device 120, such as Figure 4 As shown, at this time, the fourth power distribution branch 128 mainly distributes power to the air-conditioning compressor 700, and the fifth power distribution branch 129 mainly distributes power to the heating module 800 and the defrosting module 900. Since the market failure rate of the heating module 800, the defrosting module 900 and the air-conditioning compressor 700 is relatively high, and the main function of the electric air conditioner is cooling, and the main functions of heating and defrosting are heating, therefore, using two independent power distribution branches to supply power to the air-conditioning compressor 700 and the heating module 800 and the defrosting module 900 respectively can avoid affecting the normal power supply of other modules when the two fail, thereby improving the reliability of the system; at the same time, setting the cooling and heating functions separately can also avoid mutual influence, thereby improving the operation efficiency of the vehicle.

[0044] Furthermore, the high-voltage power distribution device 120 also includes: a seventh power distribution branch 1211, which is respectively connected to the positive battery interface BATZ and the external power supply interface GDJ, wherein the power battery BAT supplies power to the external power supply interface GDJ through the seventh power distribution branch 1211.

[0045] Specifically, refer to Figure 3 As shown, the seventh power distribution branch 1211 is mainly used to provide an external power supply interface for the vehicle so that the vehicle can supply power to external devices, thereby realizing the functional expansion of the vehicle. The specific principle will not be expanded here.

[0046] Furthermore, the fourth power distribution branch 128 includes a fourth positive contactor JZ4 and a fourth pre-charging circuit YC4, one end of the fourth positive contactor JZ4 is connected to the positive battery interface BATZ, the other end of the fourth positive contactor JZ4 is connected to the air-conditioning compressor 700, and the fourth pre-charging circuit YC4 is connected to the fourth positive contactor JZ4; the fifth power distribution branch 129 includes a fifth positive contactor JZ5, one end of the fifth positive contactor JZ5 is connected to the positive battery interface BATZ, and the other end of the fifth positive contactor JZ5 is respectively connected to the heating module 800 and the defrost module 900; the sixth power distribution branch 1210 includes a sixth positive contactor JZ6 and a fifth pre-charging circuit YC5, one end of the sixth positive contactor JZ6 is connected to the positive battery interface BATZ, the other end of the sixth positive contactor JZ6 is respectively connected to the air-conditioning compressor 700, the heating module 800 and the defrost module 900, and the fifth pre-charging circuit YC5 is connected to the sixth positive contactor JZ6.

[0047] Furthermore, the seventh power distribution branch 1211 includes a seventh positive contactor JZ7 and a sixth pre-charging circuit YC6, both ends of the seventh positive contactor JZ7 are respectively connected to the positive battery interface BATZ and the external power supply interface GDJ, and the sixth pre-charging circuit YC6 is connected in parallel with the seventh positive contactor JZ7.

[0048] Specifically, the fourth power distribution branch 128 to the seventh power distribution branch 1211 may include parallel pre-charging circuits to achieve the corresponding pre-charging function. The specific principle is similar to the aforementioned first pre-charging circuit YC1 and will not be elaborated here.

[0049] In some embodiments, reference Figure 5As shown, the power battery device 110 further includes: a main positive contactor 111, a charging positive contactor 112 and a charging negative contactor 113. Among them, one end of the main positive contactor 111 is connected to the positive electrode of the power battery BAT, and the other end of the main positive contactor 111 is connected to the positive battery interface BATZ; the two ends of the charging positive contactor 112 are respectively connected to the other end of the main positive contactor 111 and the positive charging interface of the power battery device 110, and the two ends of the charging negative contactor 113 are respectively connected to the negative electrode of the power battery BAT and the negative charging interface BATF of the power battery device 110, and the negative electrode of the power battery BAT is also connected to the negative battery interface BATF of the power battery device 110.

[0050] Furthermore, the power battery device 110 also includes: a main negative contactor 114, one end of the main negative contactor 114 is respectively connected to the negative electrode of the power battery BAT and one end of the charging negative contactor 113, and the other end of the main negative contactor 114 is connected to the negative battery interface BATF.

[0051] Specifically, in the system 110, the main positive contactor 111 and the main negative contactor 114 are mainly used to control the connection between the power battery BAT and other power distribution branches; the charging positive contactor 112 and the charging negative contactor 113 are mainly used to form a charging branch so that an external charging device can charge the power battery BAT. Separating the charging branch and the power distribution branch of the power battery BAT can avoid mutual interference between the two, thereby ensuring the safety of the system.

[0052] It should be noted that the reference Figure 5 As shown, in the system 100, the power battery device 110 may include multiple sets of charging positive contactors 112 and charging negative contactors 113 to expand the functionality of the system 100. Similarly, the power battery device 110 may include a main positive contactor 111 to enhance the power supply performance of the power battery device 110, so that the system 100 can be adapted to a variety of vehicle models and improve the applicability of the system.

[0053] Optional, reference Figure 5 As shown, the power battery device 110 also includes: a pre-detection circuit 115, the pre-detection circuit 115 includes a pre-detection resistor RYJ and a pre-detection contactor JYJ connected in series, the pre-detection circuit 115 is connected in parallel with the main negative contactor 114, and is configured to detect whether the main positive contactor 111 has a sticking fault.

[0054] Specifically, in the process of controlling the power battery BAT to be connected to other power distribution branches, when the power battery starts to be powered on, the pre-check contactor JYJ can be controlled to close first. At this time, it can be determined whether the main positive contactor 111 has a sticking fault based on the current of the branch where the pre-check contactor JYJ is located. If there is current in the branch where the pre-check contactor JYJ is located, it means that the current main positive contactor 111 has a sticking fault, and due to the presence of the pre-check resistor RYJ, the current in the circuit where the power battery is located is small at this time, and will not damage the circuit safety. If there is no current in the branch where the pre-check contactor JYJ is located, it can be determined that the main positive contactor 111 does not have adhesion, and the main positive contactor 111 can be controlled to close normally. In this way, the adhesion fault detection function for the main positive contactor 111 is realized.

[0055] To summarize, according to the high-voltage power distribution system of the embodiment of the utility model, by setting the first power distribution branch and the second power distribution branch in the high-voltage power distribution device of the system, the power battery can supply power to the first motor control module through the first power distribution branch, and supply power to the second motor control module through the second power distribution branch. At the same time, the system is also provided with a generator control module, and the generator module can provide the power of the generator to the first motor control module, the second motor control module and / or the power battery, thereby optimizing the system's power supply capacity for the motor, enabling the system to meet the power supply requirements of high-power motors, and thus being able to adapt to a variety of vehicle models such as pure electric and extended-range vehicles. In addition, by setting multiple independent power distribution branches for different functional modules in the system, the system can maintain normal operation when some functions fail, thereby effectively improving the applicability and reliability of the power distribution system.

[0056] Corresponding to the above embodiment, the utility model embodiment also provides a vehicle, referring to Figure 6 As shown, the vehicle 2000 includes the aforementioned high voltage power distribution system 100 .

[0057] According to the vehicle of the embodiment of the utility model, the power of the vehicle drive motor is more selective through the aforementioned high-voltage power distribution system, thereby improving the flexibility of vehicle configuration and increasing the power supply reliability.

[0058] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0059] It should be understood that the various parts of the utility model can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high voltage power distribution system, characterized in that: Applied to a target device, the system includes a power battery device and a high-voltage power distribution device, the power battery device includes a power battery, and the high-voltage power distribution device includes: a first power distribution branch, the first power distribution branch being connected to the positive battery interface of the power battery device and the first motor control module of the target device respectively, wherein the power battery supplies power to the first motor control module through the first power distribution branch, so that the first motor control module drives the first drive motor of the target device to work; A second power distribution branch and a generator control module, wherein the second power distribution branch is respectively connected to the positive battery interface, the second motor control module of the target device and the generator control module, wherein the power battery supplies power to the second motor control module through the second power distribution branch so that the second motor control module drives the second drive motor of the target device to work, and the generator control module provides the electric energy output by the generator of the target device to the second motor control module and / or the power battery through the second power distribution branch, and the generator control module also provides the electric energy output by the generator to the first motor control module through the first power distribution branch and the second power distribution branch.

2. The system according to claim 1, characterized in that The first power distribution branch includes a first positive contactor and a first pre-charging circuit, one end of the first positive contactor is connected to the positive battery interface, the other end of the first positive contactor is connected to the first motor control module, and the first pre-charging circuit is connected in parallel with the first positive contactor; The second power distribution branch includes a second positive contactor and a second pre-charging circuit, one end of the second positive contactor is connected to the positive battery interface, the other end of the second positive contactor is respectively connected to the second motor control module and the generator control module, and the second pre-charging circuit is connected in parallel with the second positive contactor.

3. The system according to claim 1, characterized in that The high voltage power distribution device further comprises: A third power distribution branch, a voltage conversion module, an oil pump module and an air pump module, wherein the third power distribution branch is respectively connected to the positive battery interface, the voltage conversion module, the oil pump module and the air pump module, wherein the power battery supplies power to the voltage conversion module, the oil pump module and the air pump module through the third power distribution branch, so that the voltage conversion module charges the battery, the oil pump module drives the steering system to work, and the air pump module drives the brake air pump to work.

4. The system according to claim 3, characterized in that The third power distribution branch includes a third positive contactor and a third pre-charging circuit, one end of the third positive contactor is connected to the positive battery interface, the other end of the third positive contactor is respectively connected to the voltage conversion module, the oil pump module and the air pump module, and the third pre-charging circuit is connected in parallel with the third positive contactor.

5. The system according to claim 1, characterized in that The high voltage power distribution device further comprises: a fourth power distribution branch and a fifth power distribution branch, wherein the fourth power distribution branch is respectively connected to the positive battery interface and the air-conditioning compressor, and the fifth power distribution branch is respectively connected to the positive battery interface, the heating module and the defrosting module, wherein the power battery supplies power to the air-conditioning compressor through the fourth power distribution branch and supplies power to the heating module and the defrosting module through the fifth power distribution branch; or The sixth power distribution branch is respectively connected to the positive battery interface, the air-conditioning compressor, the heating module and the defrost module, wherein the power battery supplies power to the air-conditioning compressor, the heating module and the defrost module through the sixth power distribution branch.

6. The system according to claim 5, characterized in that The fourth power distribution branch includes a fourth positive contactor and a fourth pre-charging circuit, one end of the fourth positive contactor is connected to the positive battery interface, the other end of the fourth positive contactor is connected to the air-conditioning compressor, and the fourth pre-charging circuit is connected to the fourth positive contactor; The fifth power distribution branch includes a fifth positive contactor, one end of the fifth positive contactor is connected to the positive battery interface, and the other end of the fifth positive contactor is respectively connected to the heating module and the defrosting module; The sixth power distribution branch includes a sixth positive contactor and a fifth pre-charging circuit, one end of the sixth positive contactor is connected to the positive battery interface, the other end of the sixth positive contactor is respectively connected to the air-conditioning compressor, the heating module and the defrost module, and the fifth pre-charging circuit is connected to the sixth positive contactor.

7. The system according to claim 1, characterized in that The high voltage power distribution device further comprises: A seventh power distribution branch is connected to the positive battery interface and the external power supply interface respectively, wherein the power battery supplies power to the external power supply interface through the seventh power distribution branch.

8. The system according to claim 7, characterized in that The seventh power distribution branch includes a seventh positive contactor and a sixth pre-charging circuit, two ends of the seventh positive contactor are respectively connected to the positive battery interface and the external power supply interface, and the sixth pre-charging circuit is connected in parallel with the seventh positive contactor.

9. The system according to any one of claims 1 to 8, characterized in that: The power battery device further comprises: A main positive contactor, one end of which is connected to the positive electrode of the power battery, and the other end of which is connected to the positive battery interface; A charging positive contactor and a charging negative contactor, wherein both ends of the charging positive contactor are respectively connected to the other end of the main positive contactor and the positive charging interface of the power battery device, and both ends of the charging negative contactor are respectively connected to the negative electrode of the power battery and the negative charging interface of the power battery device, and the negative electrode of the power battery is also connected to the negative battery interface of the power battery device.

10. The system according to claim 9, characterized in that The power battery device further comprises: A main negative contactor, one end of which is connected to the negative electrode of the power battery and one end of the charging negative contactor respectively, and the other end of which is connected to the negative battery interface.

11. The system according to claim 10, characterized in that The power battery device further comprises: A pre-detection circuit includes a pre-detection resistor and a pre-detection contactor connected in series. The pre-detection circuit is connected in parallel with the main negative contactor and is configured to detect whether the main positive contactor has a sticking fault.

12. A vehicle, characterized in that: Comprising a high voltage power distribution system according to any one of claims 1-11.

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