Vehicle high voltage redundant architecture, vehicle

Abstract

The application discloses a vehicle high-voltage redundant architecture and a vehicle. The energy storage battery comprises a first battery pack and a second battery pack. A switch switching circuit is connected with the first battery pack and the second battery pack, is used for controlling the connection mode of the first battery pack and / or the second battery pack, and is connected to a high-voltage power supply end through a high-voltage bus. A voltage conversion circuit is connected with the high-voltage power supply end and high-voltage accessories. The voltage conversion circuit is used for converting the voltage of the high-voltage bus when the voltage of the high-voltage bus is lower than a preset voltage, so as to supply power to the high-voltage accessories, and reduce the influence of the total voltage drop of the battery on the power of the high-voltage accessory system.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a high-voltage redundancy architecture for vehicles and vehicles. Background Technology

[0002] Current automotive design and development lacks redundant solutions to deal with battery system failures, which may lead to personal safety risks when the battery system fails randomly or unexpectedly while driving.

[0003] However, in related technologies, wide-range cell battery systems using high-voltage redundancy systems experience a drop in total voltage to half of the original output voltage during partial pack switching. This decrease in total battery voltage leads to excessive power reduction or malfunction of the high-voltage accessory system, posing a safety hazard. Summary of the Invention

[0004] In view of the above problems, this application provides a high-voltage redundancy architecture and vehicle, which can solve the safety hazards of high-voltage redundancy systems in related technologies.

[0005] A first aspect of this application provides a vehicle high-voltage redundancy architecture, the vehicle high-voltage redundancy architecture comprising:

[0006] The energy storage battery includes a first battery pack and a second battery pack;

[0007] A switching circuit is connected to the first battery pack and the second battery pack to control the connection mode of the first battery pack and / or the second battery pack, and is connected to the high-voltage power supply terminal via the high-voltage bus.

[0008] A voltage conversion circuit, connected to the high-voltage power supply terminal and the high-voltage accessory, is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory in the event of an abnormality in the first or second battery pack.

[0009] In the technical solution of this application embodiment, the energy storage battery includes a first battery pack and a second battery pack; a switching circuit is connected to the first battery pack and the second battery pack to control the connection mode of the first battery pack and / or the second battery pack, and is connected to the high-voltage power supply terminal via a high-voltage bus; a voltage conversion circuit is connected to the high-voltage power supply terminal and the high-voltage accessory. By adding a voltage conversion circuit between the high-voltage accessory system and the main circuit of the high-voltage power supply terminal, when the voltage of the high-voltage bus is at a preset voltage, the voltage conversion circuit operates in a direct-through mode, and the voltage of the high-voltage accessory does not drop; when the voltage of the high-voltage bus is lower than the preset voltage, the voltage conversion circuit operates in a boost mode to boost the voltage of the high-voltage bus. The voltage conversion circuit is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory in the event of an abnormality in the first battery pack or the second battery pack, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory system.

[0010] In some embodiments, the switch switching circuit includes:

[0011] A series switch is connected between the first battery pack and the second battery pack to control the first battery pack and the second battery pack to be connected in series.

[0012] In the technical solution of this application embodiment, the series switch can control the first battery pack and the second battery pack to be connected in series and connected to the high-voltage power supply terminal via the high-voltage bus. At this time, the voltage of the high-voltage bus is the preset voltage, and the voltage conversion circuit enters the direct-through mode to directly supply power to the high-voltage accessory. The high voltage is output to the outside through the high-voltage power supply terminal and the high-voltage accessory, which can reduce the impact of the battery total voltage drop on the power of the high-voltage accessory system.

[0013] In some embodiments, the switch switching circuit includes:

[0014] The first parallel switch is connected between the negative terminal of the first battery pack and the high-voltage negative busbar.

[0015] The second parallel switch is connected between the positive terminal of the second battery pack and the high-voltage positive bus.

[0016] In the technical solution of this application embodiment, the first parallel switch and the second parallel switch can control the first battery pack and the second battery pack to be connected in parallel and connected to the high-voltage power supply terminal via the high-voltage bus. At this time, the voltage of the high-voltage bus is half of the preset voltage, and the voltage conversion circuit enters the boost mode to convert the voltage of the high-voltage bus to supply power to the high-voltage accessories, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory system.

[0017] In some embodiments, the vehicle high-voltage redundancy architecture further includes a main positive switch and a main negative switch, wherein the positive terminal of the energy storage battery is connected to the high-voltage positive bus via the main positive switch, and the negative terminal of the energy storage battery is connected to the high-voltage negative bus via the main negative switch.

[0018] In the technical solution of this application embodiment, the first parallel switch and the second parallel switch can control the first battery pack and the second battery pack to be connected in parallel and connected to the high-voltage power supply terminal via the high-voltage bus. At this time, the voltage of the high-voltage bus is half of the preset voltage, and the voltage conversion circuit enters the boost mode to convert the voltage of the high-voltage bus to supply power to the high-voltage accessories, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory system.

[0019] In some embodiments, the vehicle high-voltage redundancy architecture further includes a pre-charge switch and a pre-charge resistor, wherein a first end of the pre-charge resistor is connected to a first end of the main positive switch, a second end of the pre-charge resistor is connected to a first end of the pre-charge switch, and a second end of the pre-charge switch is connected to a second end of the main positive switch.

[0020] In some embodiments, the vehicle high-voltage redundancy architecture further includes a bus capacitor, the two ends of which are respectively connected to the positive and negative terminals of the high-voltage power supply terminal.

[0021] In some embodiments, the voltage conversion circuit includes a first switching transistor, a second switching transistor, a first capacitor, a first inductor, and a second capacitor;

[0022] The first end of the first inductor and the first end of the first capacitor are connected to the high-voltage positive bus. The second end of the first inductor, the first end of the first switching transistor, and the first end of the second switching transistor are connected together. The second end of the second switching transistor and the first end of the second capacitor are connected together to the positive terminal of the high-voltage accessory. The second end of the first capacitor and the second end of the first switching transistor are connected together to the negative terminal of the high-voltage accessory.

[0023] In some embodiments, the voltage conversion circuit is further configured to operate in a through mode when the first battery pack and the second battery pack are connected in series, so as to connect the high-voltage power supply terminal to the high-voltage accessory.

[0024] In some embodiments, the voltage conversion circuit is further configured to operate in boost mode when the first battery pack and the second battery pack are connected in parallel, so as to boost the voltage provided by the high-voltage power supply terminal and output it to the high-voltage accessory.

[0025] A second aspect of this application also provides a vehicle, the vehicle comprising: a vehicle high-voltage redundancy architecture as described in any of the foregoing embodiments.

[0026] In the technical solution of this application embodiment, the energy storage battery includes a first battery pack and a second battery pack; a switching circuit is connected to the first battery pack and the second battery pack to control the connection mode of the first battery pack and / or the second battery pack, and is connected to the high-voltage power supply terminal via a high-voltage bus; a voltage conversion circuit is connected to the high-voltage power supply terminal and the high-voltage accessory, and the voltage conversion circuit is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory in the event of an abnormality in the first battery pack or the second battery pack, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory system. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1This is a schematic diagram of a first structural design of a vehicle high-voltage redundancy architecture provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of a second structural design of the vehicle high-voltage redundancy architecture provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of a third structure of the high-voltage redundancy architecture for vehicles provided in this application. Detailed Implementation

[0031] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The phrase "second connection port" at various locations in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0036] In the description of the embodiments of this application, the term "multiple frames" refers to two or more (including two).

[0037] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Current automotive design and development lacks redundancy solutions to address battery system failures, potentially posing personal safety risks in the event of random or unexpected battery system failures during driving. The current lack of effective countermeasures underscores the necessity of high-voltage system redundancy. However, in wide-range cell battery systems using high-voltage redundancy, the total voltage drops to 1 / 2U (U being the battery's rated voltage) during partial pack switching. This drop in total battery voltage leads to excessive power reduction or malfunction of high-voltage accessory systems. For example, a battery with a rated voltage of 650V might drop to 325V after switching. This lower voltage can cause the power supply to malfunction or operate at full load, resulting in charging failure or the inability to use the cabin air conditioning.

[0039] This application provides a vehicle high-voltage redundancy architecture, see [link / reference]. Figure 1 As shown, the vehicle high-voltage redundancy architecture provided in this application embodiment includes: an energy storage battery 100, a switch switching circuit 200, and a voltage conversion circuit 300. The energy storage battery 100 includes a first battery pack 110 and a second battery pack. The switch switching circuit 200 is connected to the first battery pack 110 and the second battery pack 120. The switch switching circuit 200 is used to control the connection mode of the first battery pack 110 and / or the second battery pack 120, and is connected to the high-voltage power supply terminal via the high-voltage bus. The voltage conversion circuit 300 is connected to the high-voltage power supply terminal 510 and the high-voltage accessory 520. The voltage conversion circuit 300 is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory 520 in the event of an abnormality in the first battery pack 110 or the second battery pack 120.

[0040] In this embodiment, the energy storage battery 100 includes a first battery pack 110 and a second battery pack 120; a switch switching circuit 200 is connected to the first battery pack 110 and the second battery pack 120. The switch switching circuit 200 can control the first battery pack 110 and the second battery pack 120 to be connected in series or in parallel, and can also control the state of the first battery pack 110 and the second battery pack 120 connected to the high-voltage bus. By controlling the connection mode of the first battery pack 110 and the second battery pack 120 and connecting them to the high-voltage power supply terminal 510 via the high-voltage bus, the power supply voltage of the high-voltage power supply terminal 510 is switched. The voltage conversion circuit 300 is connected to the high-voltage power supply terminal 510 and the high-voltage accessory 520. By adding a voltage conversion circuit 300 between the high-voltage accessory 520 system and the main circuit of the high-voltage power supply terminal 510, when the voltage of the high-voltage bus is at the preset voltage, the voltage conversion circuit 300 operates in the direct-through mode, and the voltage of the high-voltage accessory 520 does not drop. When the voltage of the high-voltage bus is lower than the preset voltage, the voltage conversion circuit 300 operates in the boost mode to boost the voltage of the high-voltage bus. The voltage conversion circuit 300 can convert the voltage of the high-voltage bus to supply power to the high-voltage accessory 520 in the event of an abnormality in the first battery pack 110 or the second battery pack 120, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory 520 system.

[0041] In some embodiments, both the high-voltage power supply terminal 510 and the high-voltage accessory 520 can supply power to the high-voltage load inside the vehicle. Through the high-voltage redundancy architecture of the vehicle in this embodiment, the normal use and functional performance of the low-voltage system and the high-voltage accessory system are guaranteed without degradation, while supporting high-voltage redundancy.

[0042] In some embodiments, the energy storage battery 100 includes a first battery pack 110 and a second battery pack 120. The energy storage battery 100 can be connected in series with the entire pack, in parallel with half packs, or powered by a single pack through a combination of switches in the switching circuit 200. The voltage conversion circuit 300 can be a buck-boost DC-DC circuit. The main circuit of the energy storage battery 100 is divided into two branches: one is a power branch, which can be configured with dual drive assemblies to achieve drive actuator redundancy; the other is a high-voltage accessory branch, where a buck-boost DC-DC cascaded high-voltage accessory ensures that the high-voltage accessory always operates in a near-ideal region. The near-ideal region refers to the high-efficiency voltage range where the accessory performance does not degrade, typically the rated voltage.

[0043] In some embodiments, the voltage conversion circuit 300 can be a half-bridge topology boost circuit. In this embodiment, by adding a half-bridge topology boost circuit between the high-voltage accessory system and the main circuit, when the output voltage of the energy storage battery 100 is the rated voltage U, the voltage conversion circuit 300 operates in direct mode, and the voltage does not drop. When the output voltage of the energy storage battery 100 is 1 / 2U or lower than the preset voltage, the voltage conversion circuit 300 operates in boost mode, boosting the voltage on the high-voltage bus to obtain the preset voltage, thereby providing the required preset voltage to the high-voltage accessory 520.

[0044] In some embodiments, see Figure 2 As shown, the switch switching circuit 200 includes a series switch K11, which is connected between the first battery pack 110 and the second battery pack 120. The series switch K11 is used to control the first battery pack 110 and the second battery pack 120 to be connected in series.

[0045] In this embodiment, the series switch K11 can control the first battery pack 110 and the second battery pack 120 to be connected in series and connected to the high-voltage power supply terminal 510 via the high-voltage bus. At this time, the voltage of the high-voltage bus is the preset voltage, and the voltage conversion circuit 300 enters the direct-through mode to directly supply power to the high-voltage accessory 520. The high-voltage power supply terminal 510 and the high-voltage accessory 520 output high voltage to the outside, which can reduce the impact of the battery total voltage drop on the power of the high-voltage accessory 520 system.

[0046] In some embodiments, see Figure 2 As shown, the switch switching circuit 200 includes: a first parallel switch K21 and a second parallel switch K22. The first parallel switch K21 is connected between the negative terminal of the first battery pack 110 and the high-voltage negative busbar; the second parallel switch K22 is connected between the positive terminal of the second battery pack 120 and the high-voltage positive busbar.

[0047] In this embodiment, the first parallel switch K21 and the second parallel switch K22 can control the first battery pack 110 and the second battery pack 120 to be connected in parallel and connected to the high-voltage power supply terminal 510 via the high-voltage bus. At this time, the voltage of the high-voltage bus is half of the preset voltage, and the voltage conversion circuit 300 enters the boost mode to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory 520, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory 520 system.

[0048] In some embodiments, see Figure 2 As shown, the vehicle's high-voltage redundancy architecture also includes a main positive switch K31 and a main negative switch K32. The positive terminal of the energy storage battery 100 is connected to the high-voltage positive bus via the main positive switch K31, and the negative terminal of the energy storage battery 100 is connected to the high-voltage negative bus via the main negative switch K32.

[0049] In this embodiment, the first parallel switch K21 and the second parallel switch K22 can control the first battery pack 110 and the second battery pack 120 to be connected in parallel and connected to the high-voltage power supply terminal 510 via the high-voltage bus. At this time, the voltage of the high-voltage bus is half of the preset voltage, and the voltage conversion circuit 300 enters the boost mode to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory 520, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory 520 system.

[0050] In some embodiments, see Figure 2 As shown, the vehicle's high-voltage redundancy architecture also includes a pre-charge switch K41 and a pre-charge resistor R1. The pre-charge switch K41 and the pre-charge resistor R1 are connected in series, and the series connection of the pre-charge switch K41 and the pre-charge resistor R1 is then connected in parallel with the main positive switch K31.

[0051] In this embodiment, the first end of the pre-charge resistor R1 is connected to the first end of the main positive switch K31, the second end of the pre-charge resistor R1 is connected to the first end of the pre-charge switch K41, and the second end of the pre-charge switch K41 is connected to the second end of the main positive switch K31. When supplying power to the high-voltage power supply terminal 510 or the high-voltage accessory 520, pre-charging the energy storage device connected to the high-voltage power supply terminal 510 or the high-voltage accessory 520 through the pre-charge circuit can reduce the voltage surge when the high-voltage power supply terminal 510 or the high-voltage accessory 520 is powered on.

[0052] In some embodiments, see Figure 2 As shown, the vehicle's high-voltage redundancy architecture also includes a bus capacitor C0, with its two ends connected to the positive and negative terminals of the high-voltage power supply terminal 510, respectively.

[0053] In this embodiment, the pre-charge switch K41 and the pre-charge resistor R1 form a pre-charge circuit, which can pre-charge the bus capacitor C0 and the accessory capacitor (second capacitor C2) when the high-voltage power supply terminal 510 or the high-voltage accessory 520 is powered.

[0054] In some embodiments, see Figure 3 As shown, the voltage conversion circuit 300 includes a first switch Q1, a second switch Q2, a first capacitor C1, a first inductor L1, and a second capacitor C2. The first end of the first inductor L1 and the first end of the first capacitor C1 are connected to the high-voltage positive bus. The second end of the first inductor L1, the first end of the first switch Q1, and the first end of the second switch Q2 are connected together. The second end of the second switch Q2 and the first end of the second capacitor C2 are connected together to the positive terminal of the high-voltage accessory 520. The second end of the first capacitor C1 and the second end of the first switch Q1 are connected together to the negative terminal of the high-voltage accessory 520.

[0055] In this embodiment, the first switch Q1, the second switch Q2, the first capacitor C1, the first inductor L1, and the second capacitor C2 form a half-bridge topology. The half-bridge topology operates in buck-boost mode to achieve unidirectional boost and uniphase buck.

[0056] In some embodiments, the voltage conversion circuit 300 is also configured to operate in a pass-through mode when the first battery pack 110 and the second battery pack 120 are connected in series, so that the high-voltage power supply terminal 510 is connected to the high-voltage accessory 520.

[0057] In this embodiment, when the first battery pack 110 and the second battery pack 120 are in series mode, the main positive switch K31, the main negative switch K32, and the series switch K11 are closed, forming a high-voltage system with a total voltage U. The voltage conversion circuit 300 enters the direct-through mode, and the bus capacitor C0 and the accessory capacitor (second capacitor C2) are precharged to 95%U by the pre-charge circuit (pre-charge switch K41 and pre-charge resistor R1).

[0058] In some embodiments, the voltage conversion circuit 300 is also used to operate in boost mode when the first battery pack 110 and the second battery pack 120 are connected in parallel, so as to boost the voltage provided by the high voltage power supply terminal 510 and output it to the high voltage accessory 520.

[0059] In this embodiment, when the first battery pack 110 and the second battery pack 120 are in parallel mode, the main positive switch K31, the main negative switch K32, the first parallel switch K21, and the second parallel switch K22 are closed, and the series switch K11 is turned off, forming a high-voltage system with a total voltage of 1 / 2U. The voltage conversion circuit 300 first enters the direct-through mode, and after the battery detects insulation and precharges to 95% 1 / 2U, the voltage conversion circuit 300 enters the boost mode to precharge the accessory capacitor (second capacitor C2) to 95%, and then the high-voltage accessory 520 can enter the normal working state.

[0060] In some embodiments, when the first battery pack 110 and the second battery pack 120 are connected in parallel, the U-level voltage in the high-voltage accessory can also be stepped down to 1 / U for charging via bidirectional DC-DC converter.

[0061] In some embodiments, the high-voltage accessory 520 can also be connected to a charging device. In a redundant mode, redundant switching of the energy storage battery 100 can be realized. In the redundant switching state, a charging device with a rated voltage of 1 / 2U can charge the energy storage battery 100 with a rated voltage of U without the need for an additional booster.

[0062] Through the high-voltage redundancy architecture of the vehicle in this embodiment, the vehicle charger can still be used to replenish power at full power in the redundant state, and the 12V / 24V / 48V DC-DC converter, positive temperature coefficient heater (PTC), electrical air conditioning control module (EAC), high-voltage active suspension, etc. can still work at full load.

[0063] This application also provides a vehicle, which includes a high-voltage redundancy architecture as described in any of the above embodiments.

[0064] In this embodiment, the energy storage battery 100 includes a first battery pack 110 and a second battery pack 120; a switch switching circuit 200 is connected to the first battery pack 110 and the second battery pack 120 to control the connection mode of the first battery pack 110 and / or the second battery pack 120, and is connected to the high-voltage power supply terminal 510 via a high-voltage bus; a voltage conversion circuit 300 is connected to the high-voltage power supply terminal 510 and the high-voltage accessory 520, and the voltage conversion circuit 300 is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory 520 in the event of an abnormality in the first battery pack 110 or the second battery pack 120, thereby reducing the impact of the battery total voltage drop on the power of the high-voltage accessory 520 system.

[0065] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0067] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0068] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0069] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0070] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A high-voltage redundancy architecture for vehicles, characterized in that, The vehicle high-voltage redundancy architecture includes: The energy storage battery includes a first battery pack and a second battery pack; A switching circuit is connected to the first battery pack and the second battery pack to control the connection mode of the first battery pack and / or the second battery pack, and is connected to the high-voltage power supply terminal via the high-voltage bus. A voltage conversion circuit, connected to the high-voltage power supply terminal and the high-voltage accessory, is used to convert the voltage of the high-voltage bus to supply power to the high-voltage accessory in the event of an abnormality in the first or second battery pack.

2. The vehicle high-voltage redundancy architecture according to claim 1, characterized in that, The switching circuit includes: A series switch is connected between the first battery pack and the second battery pack to control the first battery pack and the second battery pack to be connected in series.

3. The vehicle high-voltage redundancy architecture according to claim 1, characterized in that, The switching circuit includes: The first parallel switch is connected between the negative terminal of the first battery pack and the high-voltage negative busbar. The second parallel switch is connected between the positive terminal of the second battery pack and the high-voltage positive bus.

4. The vehicle high-voltage redundancy architecture according to claim 1, characterized in that, The vehicle high-voltage redundancy architecture also includes a main positive switch and a main negative switch. The positive terminal of the energy storage battery is connected to the high-voltage positive bus via the main positive switch, and the negative terminal of the energy storage battery is connected to the high-voltage negative bus via the main negative switch.

5. The vehicle high-voltage redundancy architecture according to claim 4, characterized in that, The vehicle high-voltage redundancy architecture also includes a pre-charge switch and a pre-charge resistor. The first end of the pre-charge resistor is connected to the first end of the main positive switch, the second end of the pre-charge resistor is connected to the first end of the pre-charge switch, and the second end of the pre-charge switch is connected to the second end of the main positive switch.

6. The vehicle high-voltage redundancy architecture according to claim 1, characterized in that, The vehicle high-voltage redundancy architecture also includes a bus capacitor, the two ends of which are respectively connected to the positive and negative terminals of the high-voltage power supply terminal.

7. The vehicle high-voltage redundancy architecture according to any one of claims 1-6, characterized in that, The voltage conversion circuit includes a first switching transistor, a second switching transistor, a first capacitor, a first inductor, and a second capacitor; The first end of the first inductor and the first end of the first capacitor are connected to the high-voltage positive bus. The second end of the first inductor, the first end of the first switching transistor, and the first end of the second switching transistor are connected together. The second end of the second switching transistor and the first end of the second capacitor are connected together to the positive terminal of the high-voltage accessory. The second end of the first capacitor and the second end of the first switching transistor are connected together to the negative terminal of the high-voltage accessory.

8. The vehicle high-voltage redundancy architecture according to any one of claims 1-6, characterized in that, The voltage conversion circuit is also used to operate in a through mode when the first battery pack and the second battery pack are connected in series, so that the high-voltage power supply terminal is connected to the high-voltage accessory.

9. The vehicle high-voltage redundancy architecture according to any one of claims 1-6, characterized in that, The voltage conversion circuit is also used to operate in boost mode when the first battery pack and the second battery pack are connected in parallel, so as to boost the voltage provided by the high-voltage power supply terminal and output it to the high-voltage accessory.

10. A vehicle, characterized in that, The vehicle includes: a high-voltage redundancy architecture as described in any one of claims 1 to 9.

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