Vehicle-mounted redundant power supply circuit and system, electric equipment and vehicle

Abstract

The utility model discloses a vehicle-mounted redundant power supply circuit and system, electric equipment and a vehicle. The vehicle-mounted redundant power supply circuit comprises a first power supply, a first power supply conversion module and a second power supply conversion module, the first end of the first power supply conversion module is connected with the first power supply, and the second end of the first power supply conversion module is connected with an electric device; the first end of the second power supply conversion module is connected with a part of the first power supply, and the second end of the second power supply conversion module is connected with the electric device; therefore, the first power supply can supply power to the electric device at the same time through the first power supply conversion module and the second power supply conversion module. According to the invention, response time during power supply switching can be avoided, the situation that power cannot be supplied to the electric device due to power supply switching failure is avoided, and the reliability of power supply to the electric device is improved.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and more specifically to a vehicle-mounted redundant power supply circuit, system, power-consuming equipment and vehicle. Background Art

[0002] At present, with the development of technology, there are more and more electronic devices on electric power-consuming equipment, and the requirements for power supply reliability are getting higher and higher. In the existing redundant power supply design scheme, the main power supply is usually used for power supply, and the backup power supply is on standby. When the main power supply fails, it switches to the backup power supply for power supply. However, there is a certain response time when the system switches the power supply. The switching delay caused by the response time is very dangerous for the electric equipment in motion. In addition, if there is a fault during switching, such as communication failure, contactor sintering, etc., the power supply switching failure will result in power failure, and the power supply reliability cannot be guaranteed. Utility Model Content

[0003] The present application is proposed to solve at least one of the above problems. According to one aspect of the present application, a vehicle-mounted redundant power supply circuit is provided, the vehicle-mounted redundant power supply circuit comprising: a first power supply, a first power conversion module, and a second power conversion module; the first end of the first power conversion module is connected to the first power supply, and the second end of the first power conversion module is connected to an electrical device; the first end of the second power conversion module is connected to a part of the first power supply, and the second end of the second conversion module is connected to the electrical device; so that the first power supply can simultaneously supply power to the electrical device through the first power conversion module and the second power conversion module.

[0004] In some embodiments of the present application, the vehicle-mounted redundant power supply circuit further includes: a second power supply, wherein the second power supply is connected to the electrical device so that the second power supply can supply power to the electrical device.

[0005] In some embodiments of the present application, the first power conversion module includes a DC / DC conversion module.

[0006] In some embodiments of the present application, the second power conversion module includes: a distribution switch, an isolation unit and a control unit, the first end of the isolation module is connected to some battery cells of the first power supply through the distribution switch, the second end of the isolation module is connected to the electrical device, and the control unit is connected to the distribution switch.

[0007] According to another aspect of the present application, a vehicle-mounted redundant power supply system is provided, the vehicle-mounted redundant power supply system comprising any one of the vehicle-mounted redundant power supply circuits described above; wherein, in a non-redundant power supply state, the first power supply supplies power to the electrical device through the first power conversion module; in a first redundant power supply state, the first power supply supplies power to the electrical device through the second power conversion module; and in a second redundant power supply state, the first power supply supplies power to the electrical device jointly through the first power conversion module and the second power conversion module.

[0008] In some embodiments of the present application, in the non-redundant power supply state, the second power supply in the vehicle-mounted redundant power supply circuit simultaneously supplies power to the electrical device; in the first redundant power supply state, the second power supply simultaneously supplies power to the electrical device.

[0009] In some embodiments of the present application, when the first power conversion module and the second power supply are both in a normal power supply state, the vehicle-mounted redundant power supply system is in the non-redundant power supply state; when the first power conversion module changes from the normal power supply state to a fault state, the vehicle-mounted redundant power supply system switches from the non-redundant power supply state to the first redundant power supply state; when the second power supply changes from the normal power supply state to a fault state, the vehicle-mounted redundant power supply system switches from the non-redundant power supply state to the second redundant power supply state.

[0010] In some embodiments of the present application, in the non-redundant power supply state, the control unit in the second power conversion module controls the power distribution switch in the second power conversion module to be in an open state; in the first redundant power supply state or the second redundant power supply state, the control unit controls the power distribution switch to be in a closed state.

[0011] In some embodiments of the present application, the vehicle-mounted redundant power supply system also includes: a first monitoring and protection module, the first monitoring and protection module is connected to the first power conversion module, and the first monitoring and protection module is communicatively connected to the control unit; the first monitoring and protection module is used to obtain the status of the first power conversion module, and send first fault information to the control unit when the first power conversion module is in a fault state; the control unit is used to control the distribution switch to be in a closed state according to the first fault information.

[0012] In some embodiments of the present application, the first monitoring and protection module is also used to disconnect the connection between the first power conversion module and the electrical device, or disconnect the connection between the first power conversion module and the first power supply when the first power conversion module is in the fault state.

[0013] In some embodiments of the present application, the vehicle-mounted redundant power supply system also includes: a second monitoring and protection module, the second monitoring and protection module is connected to the second power supply in the vehicle-mounted redundant power supply circuit, and the second monitoring and protection module is communicatively connected to the control unit; the second monitoring and protection module is used to obtain the status of the second power supply and send second fault information to the control unit when the second power supply is in a fault state; the control unit is used to control the distribution switch to be in a closed state according to the second fault information.

[0014] In some embodiments of the present application, the second monitoring and protection module is further configured to disconnect the second power supply and the electrical device when the second power supply is in the fault state.

[0015] In some embodiments of the present application, the vehicle-mounted redundant power supply system also includes: a first monitoring and protection module, the first monitoring and protection module is connected to the first power conversion module, and the first monitoring and protection module is communicatively connected to the control unit in the second power conversion module; a second monitoring and protection module, the second monitoring and protection module is connected to the second power supply, and the second monitoring and protection module is communicatively connected to the control unit; the first monitoring and protection module is used to obtain the status of the first power conversion module, and send first non-fault information to the control unit when the first power conversion module is in a normal power supply state; the second monitoring and protection module is used to obtain the status of the second power supply, and send second non-fault information to the control unit when the second power supply is in a normal power supply state; the control unit is used to control the distribution switch in the second power conversion module to be in an open state according to the first non-fault information and the second non-fault information.

[0016] In some embodiments of the present application, the first monitoring and protection module is also communicatively connected to the second monitoring and protection module.

[0017] According to another aspect of the present application, a vehicle is provided, comprising the on-board redundant power supply system.

[0018] According to another aspect of the present application, an electrical device is provided, and the electrical device includes the vehicle-mounted redundant power supply system.

[0019] According to the vehicle-mounted redundant power supply circuit, system, electrical equipment and vehicle of the embodiments of the present application, the first power supply can simultaneously supply power to the electrical device through the first power conversion module and the second power conversion module, which can avoid the response time when power switching is performed, and at the same time avoid the situation where the electrical device cannot be powered due to power switching failure, thereby improving the reliability of power supply to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0021] Figure 1 A schematic structural diagram of a vehicle-mounted redundant power supply system provided according to an embodiment of the present application is shown.

[0022] Figure 2 A schematic structural diagram of a vehicle-mounted redundant power supply system provided according to another embodiment of the present application is shown.

[0023] Figure 3 A schematic diagram showing a vehicle-mounted redundant power supply system provided according to an embodiment of the present application in a non-redundant power supply state.

[0024] Figure 4 A schematic diagram showing a vehicle-mounted redundant power supply system provided according to an embodiment of the present application in a first redundant power supply state.

[0025] Figure 5 A schematic diagram showing a vehicle-mounted redundant power supply system provided according to an embodiment of the present application in a second redundant power supply state. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0027] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0028] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as a second element, component, region, layer or part.

[0029] Spatially relative terms such as "under," "below," "below," "under," "above," "above," etc., may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0030] In order to thoroughly understand the present application, a detailed structure will be presented in the following description to illustrate the technical solution proposed by the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0031] In the existing redundant power supply design, the main power supply is usually used, and the backup power supply is on standby. When the main power supply fails, the backup power supply is switched to the backup power supply. However, the system has a certain response time when switching the power supply. The switching delay caused by the response time is very dangerous for the electrical equipment in motion. In addition, if there is a fault during switching, such as communication failure, contactor sintering, etc., the power supply switching failure will result in power failure, and the power supply reliability cannot be guaranteed.

[0032] In order to solve at least one of the above problems, the present application provides a vehicle-mounted redundant power supply circuit, which includes: a first power supply, a first power conversion module and a second power conversion module; the first end of the first power conversion module is connected to the first power supply, and the second end of the first power conversion module is connected to an electrical device; the first end of the second power conversion module is connected to a part of the first power supply, and the second end of the second conversion module is connected to the electrical device; so that the first power supply can simultaneously supply power to the electrical device through the first power conversion module and the second power conversion module.

[0033] According to the vehicle-mounted redundant power supply circuit of the present application, the first power supply can simultaneously supply power to the electrical devices through the first power conversion module and the second power conversion module, thereby avoiding the response time when power switching is performed, and at the same time avoiding the situation where the electrical devices cannot be powered due to power switching failure, thereby improving the reliability of power supply to the electrical devices.

[0034] In some embodiments, the first power source may be a power battery or other suitable power source, which is not limited.

[0035] In some embodiments, the vehicle-mounted redundant power supply circuit further includes: a second power supply, the second power supply is connected to the electrical device so that the second power supply can supply power to the electrical device.

[0036] The second power supply can supply power to the electrical device while the first power supply supplies power to the electrical device through the first power conversion module, or the second power supply can supply power to the electrical device while the first power supply supplies power to the electrical device through the second power conversion module.

[0037] The second power source may be a battery or other suitable power source, which is not limited.

[0038] In some embodiments, the first power conversion module includes a DC / DC conversion module, which can convert a fixed DC voltage into a variable DC voltage.

[0039] In some embodiments, the second power conversion module includes: a distribution switch, an isolation unit and a control unit, the first end of the isolation module is connected to some battery cells of the first power supply through the distribution switch, the second end of the isolation module is connected to the electrical device, and the control unit is connected to the distribution switch.

[0040] The control unit may be an IC control unit, or may be other suitable electronic control components, etc., which are not limited. The power distribution switch may be implemented as Figure 2The switches K1 and K2 in the figure may also be implemented as other types of circuit switches, which is not limited thereto.

[0041] Reference below Figure 1 to Figure 5 Describe the vehicle-mounted redundant power supply system according to an embodiment of the present application. The vehicle-mounted redundant power supply system provided by the embodiment of the present application includes: the above-mentioned vehicle-mounted redundant power supply circuit; wherein, in the non-redundant power supply state, the first power conversion module and the second power supply jointly supply power to the power-consuming device; in the first redundant power supply state, the second power conversion module and the second power supply jointly supply power to the power-consuming device; in the second redundant power supply state, the first power supply jointly supplies power to the power-consuming device through the first power conversion module and the second power conversion module.

[0042] Specifically, the vehicle-mounted redundant power supply system of this embodiment has a non-redundant power supply state and two redundant power supply states. When the vehicle-mounted redundant power supply system is in the non-redundant power supply state (that is, the normal working state), the first power conversion module obtains electric energy from the first power supply and provides it to the electric device, and at the same time, the second power supply can also power the electric device; when the vehicle-mounted redundant power supply system is in the first redundant power supply state (that is, the abnormal working state), the second power conversion module obtains electric energy from some of the cells of the first power supply and provides it to the electric device, and at the same time, the second power supply can also power the electric device; when the vehicle-mounted redundant power supply system is in the second redundant power supply state (that is, the abnormal working state), the second power conversion module obtains electric energy from some of the cells of the first power supply and provides it to the electric device, and at the same time, the first power conversion module can obtain electric energy from the first power supply and provide it to the electric device.

[0043] In the above process, when the vehicle-mounted redundant power supply system is switched from a non-redundant power supply state to a first redundant power supply state, since the second power supply can continue to supply power, it is possible to avoid a situation in which the vehicle operates abnormally due to power failure of electrical components during the switching time; when the vehicle-mounted redundant power supply system is switched from a non-redundant power supply state to a first redundant power supply state, since the first power supply can continue to supply power through the first power conversion module, it is possible to avoid a situation in which the vehicle operates abnormally due to power failure of electrical components during the switching time.

[0044] Moreover, when the vehicle-mounted redundant power supply system is in a non-redundant power supply state, the first power supply supplies power to the electrical device through the first power conversion module, and at the same time the second power supply supplies power to the electrical device and is not affected by the second power conversion module. Therefore, the situation where the failure of the second power conversion module affects the first power conversion module and the second power supply can also be avoided.

[0045] Based on this, the present application provides a vehicle-mounted redundant power supply system with multiple power supply states. According to the vehicle-mounted redundant power supply system of the present application, in the non-redundant power supply state, the first power supply supplies power to the electrical device through the first power conversion module, and the second power supply supplies power to the electrical device at the same time; in the first redundant power supply state, the first power supply supplies power to the electrical device through the second power conversion module, and the second power supply supplies power to the electrical device at the same time; in the second redundant power supply state, the first power supply supplies power to the electrical device through the second power conversion module and the first power conversion module together; when the vehicle-mounted redundant power supply system switches from the non-redundant power supply state to the redundant power supply state, the second power supply or the first power conversion module can continue to supply power, thereby avoiding the situation where the electrical device loses power during the switching time and causes abnormal operation of the vehicle, and the first power conversion module and the second power supply are not affected by the second power conversion module, and the situation where the failure of the second power conversion module affects the first power conversion module and the second power supply can also be avoided.

[0046] In addition, the vehicle-mounted redundant power supply system of the present application adopts the vehicle's own first power supply, second power supply and first power conversion module. The second power conversion module directly obtains electrical energy from some battery cells of the first power supply for redundant power supply. Therefore, there is no need to add additional redundant power supply, which makes the vehicle-mounted redundant power supply system have the advantages of simple structure and low cost.

[0047] In some embodiments, the electrical components may include vehicle lights, vehicle audio, vehicle fans, vehicle air conditioners, electric windows, etc., which are not limited. In addition, when the vehicle is started, the vehicle redundant power supply system may also supply power to the vehicle's starting system, ignition system, and electronic fuel injection system, etc., which may also be regarded as electrical components, which are not limited.

[0048] Among them, when the on-board redundant power supply system supplies power to electrical devices, it can supply a voltage of about 12V. Specifically, after the first power conversion module obtains high-voltage electrical energy from the first power supply, it converts the obtained high-voltage electrical energy into 12V low-voltage electrical energy and provides it to the electrical devices; the second power supply can directly provide 12V low-voltage electrical energy to the electrical devices; generally speaking, the voltage of each battery cell in the first power supply is 3.3V, so the second power conversion module can be connected to the 4 battery cells connected in series in the first power supply, and obtain 13.2V low-voltage electrical energy from the 4 battery cells to provide it to the electrical devices. The power supply lines for the electrical devices that the first power conversion module obtains electrical energy from the first power supply, the power supply lines for the electrical devices that the second power supply provides, and the power supply lines for the electrical devices that the second power conversion module obtains electrical energy from some of the battery cells of the first power supply can be found in. Figure 2 The lines in .

[0049] In some embodiments, when both the first power conversion module and the second power supply are in a normal power supply state, the first power supply supplies power to the electrical device through the first power conversion module, and the second power supply supplies power to the electrical device at the same time, and the first power supply does not supply power to the electrical device through the second power conversion module, and the vehicle-mounted redundant power supply system is in a non-redundant power supply state. In the non-redundant power supply state, when the first power conversion module changes from a normal power supply state to a faulty state, the first power conversion module cannot continue to supply power to the electrical device, and at this time, the first power supply can supply power to the electrical device through the second power conversion module, and at the same time, the second power supply supplies power to the electrical device, and the vehicle-mounted redundant power supply system switches from a non-redundant power supply state to a first redundant power supply state; or, when the second power supply changes from a normal power supply state to a faulty state, the second power supply cannot continue to supply power to the electrical device, and at this time, the first power supply can supply power to the electrical device through the first power conversion module and the second power conversion module together, and the vehicle-mounted redundant power supply system switches from a non-redundant power supply state to a second redundant power supply state.

[0050] Among them, the first power conversion module being in a fault state may mean that the first power conversion module has an overcurrent fault, an overvoltage fault or a short circuit fault, etc., and the second power supply being in a fault state may mean that the second power supply has an undervoltage fault or a short circuit fault, etc.

[0051] It should be noted that the second power conversion module performs redundant power supply only when the first power conversion module or the second power source is in a fault state.

[0052] In some embodiments, Figure 2 As shown, the vehicle-mounted redundant power supply system also includes: a first monitoring and protection module, the first monitoring and protection module is connected to the first power conversion module, the first monitoring and protection module is used to obtain the state of the first power conversion module, and disconnect the connection between the first power conversion module and the electrical device when the first power conversion module is in a fault state, or disconnect the connection between the first power conversion module and the first power supply, so as to quickly cut off the power supply circuit of the first power conversion module to the electrical device, thereby improving the safety of the vehicle-mounted redundant power supply system. At this time, the vehicle-mounted redundant power supply system can be switched from a non-redundant power supply state to a first redundant power supply state.

[0053] In some embodiments, Figure 2 As shown, the vehicle-mounted redundant power supply system also includes: a second monitoring and protection module, the second monitoring and protection module is connected to the second power supply, and the second monitoring and protection module is used to obtain the state of the second power supply, and disconnect the connection between the second power supply and the electrical device when the second power supply is in a fault state, so as to quickly cut off the power supply circuit of the second power supply to the electrical device, thereby improving the safety of the vehicle-mounted redundant power supply system. At this time, the vehicle-mounted redundant power supply system can be switched from a non-redundant power supply state to a second redundant power supply state.

[0054] In some embodiments, Figure 2 As shown, in the non-redundant power supply state, the control unit controls the power distribution switch to be in an open state. At this time, the circuit between the isolation module and the first power supply is broken, the isolation module cannot obtain electrical energy from the first power supply, and the isolation module does not supply power to the electrical devices; in the first redundant power supply state or the second redundant power supply state, the control unit controls the power distribution switch to be in a closed state. At this time, the circuit between the isolation module and the first power supply is broken, the isolation module obtains electrical energy from some battery cells of the first power supply, and the isolation module supplies power to the electrical devices.

[0055] In addition, since the second power conversion module has high and low voltages, the isolation module can also play a role in isolating the high and low voltages.

[0056] In some embodiments, the first monitoring and protection module, the second monitoring and protection module, and the control unit can be communicatively connected with each other. That is, the first monitoring and protection module can be communicatively connected with the control unit, the second monitoring and protection module can be communicatively connected with the control unit, and the first monitoring and protection module can be communicatively connected with the second monitoring and protection module. The first monitoring and protection module, the second monitoring and protection module, and the control unit can adopt wired communication or wireless communication, and the communication protocol can adopt CAN bus communication protocol, LIN bus communication protocol, FlexRay bus communication protocol, MOST bus communication protocol, etc., which are not limited. Preferably, CAN bus communication can be adopted between the first monitoring and protection module, the second monitoring and protection module, and the control unit, and the communication line can refer to Figure 2 The lines in .

[0057] Among them, the first monitoring and protection module can send the status of the first power conversion module it obtains to the second monitoring and protection module and the control unit, and the second monitoring and protection module can send the status of the first power conversion module it obtains to the first monitoring and protection module and the control unit.

[0058] Specifically, when the first monitoring and protection module obtains that the first power conversion module is in a fault state, it can send first fault information to the control unit, and the first fault information is used to indicate that the first power conversion module is in a fault state and the first power conversion module cannot continue to supply power to the electrical device. After receiving the first fault information, the control unit can control the power distribution switch to be in a closed state according to the first fault information, so as to supply power to the electrical device through the second power conversion module.

[0059] Similarly, the first monitoring and protection module may also send the first fault information to the second monitoring and protection module. After receiving the first fault information, the second monitoring and protection module may control the second power supply to be in a normal power supply state so as to supply power to the electrical device through the second power supply.

[0060] Therefore, when the first power conversion module fails during the process of the vehicle-mounted redundant power supply system providing non-redundant power supply to the electrical device, the vehicle-mounted redundant power supply system can switch from the non-redundant power supply state to the first redundant power supply state.

[0061] The second monitoring and protection module can send second fault information to the control unit when it is obtained that the second power supply is in a fault state. The second fault information is used to indicate that the second power supply is in a fault state and the second power supply cannot continue to supply power to the electrical device. After receiving the second fault information, the control unit can control the power distribution switch to be in a closed state according to the second fault information, so that the first power supply supplies power to the electrical device through the second power conversion module.

[0062] Similarly, the second monitoring and protection module can also send second fault information to the first monitoring and protection module. After receiving the second fault information, the first monitoring and protection module can control the first power conversion module to be in a normal power supply state so that the first power supply supplies power to the electrical device through the first power conversion module.

[0063] Therefore, when the second power supply fails during the process of the vehicle-mounted redundant power supply system providing non-redundant power supply to the electrical device, the vehicle-mounted redundant power supply system can switch from the non-redundant power supply state to the second redundant power supply state.

[0064] In addition, the vehicle-mounted redundant power supply system may also be switched from the first redundant power supply state or the second redundant power supply state to a non-redundant power supply state.

[0065] Specifically, the first monitoring and protection module can send first non-fault information to the control unit when it is obtained that the first power conversion module is in a normal power supply state, and the first power supply can normally supply power to the electrical device through the first power conversion module. The second monitoring and protection module can send second non-fault information to the control unit when it is obtained that the second power supply is in a normal power supply state, and the second non-fault information is used to indicate that the second power supply is in a normal power supply state, and the second power supply can normally supply power to the electrical device. After receiving the first non-fault information and the second non-fault information, the control unit can control the power distribution switch to be in an open state according to the first non-fault information and the second non-fault information, so that the first power supply stops supplying power to the electrical device through the second power conversion module.

[0066] As a result, when the first power conversion module or the second power supply returns to normal during the process of the vehicle-mounted redundant power supply system providing redundant power supply to electrical devices, the vehicle-mounted redundant power supply system can switch from the first redundant power supply state or the second redundant power supply state to the non-redundant power supply state.

[0067] For ease of understanding, the following is combined with Figure 3 to Figure 5The working process of the vehicle redundant power supply system is further described.

[0068] like Figure 3 As shown, the vehicle redundant power supply system is in a non-redundant power supply state. At this time, the first power conversion module and the second power supply are both in a normal power supply state, the power distribution switch is in an open state, the isolation module cannot obtain power from the first power supply, and the first power supply supplies power to the electrical device through the first power conversion module, while the second power supply supplies power to the electrical device, and the power supply line is the corresponding line in the figure.

[0069] When the first monitoring and protection module obtains that the first power conversion module is in a fault state, the first monitoring and protection module disconnects the first power conversion module and the electrical device, or disconnects the first power conversion module and the first power supply, and the first power supply no longer supplies power to the electrical device through the first power conversion module; at the same time, the first monitoring and protection module sends the first fault information to the second monitoring and protection module and the control unit through the corresponding communication line in the figure, and the control unit controls the power distribution switch to be in a closed state according to the first fault information, and the isolation module obtains electrical energy from some cells of the first power supply, and the isolation module and the second power supply jointly supply power to the electrical device, and the power supply line is the corresponding line in the figure, thereby switching the on-board redundant power supply system from the non-redundant power supply state to the first redundant power supply state, and the first redundant power supply state is as follows Figure 4 shown.

[0070] Alternatively, when the second monitoring and protection module obtains that the second power supply is in a fault state, the second monitoring and protection module disconnects the second power supply and the electrical device, and the second power supply no longer supplies power to the electrical device; at the same time, the second monitoring and protection module sends a second fault information to the first monitoring and protection module and the control unit through the corresponding communication line in the figure, and the control unit controls the power distribution switch to be in a closed state according to the second fault information, and the isolation module obtains electrical energy from some of the cells of the first power supply, and the isolation module and the first power conversion module jointly supply power to the electrical device, and the power supply line is the corresponding line in the figure, thereby switching the on-board redundant power supply system from the non-redundant power supply state to the second redundant power supply state, and the second redundant power supply state is as follows Figure 5 shown.

[0071] According to yet another aspect of the present application, a vehicle is provided, the vehicle including an on-board redundant power supply system.

[0072] Among them, the vehicle-mounted redundant power supply system can be implemented as the vehicle-mounted redundant power supply system mentioned above, and reference can be made to the introduction above, which will not be repeated here.

[0073] According to another aspect of the present application, an electrical device is provided, and the electrical device includes a vehicle-mounted redundant power supply system.

[0074] Among them, the vehicle-mounted redundant power supply system can be implemented as the vehicle-mounted redundant power supply system mentioned above, and reference can be made to the introduction above, which will not be repeated here.

[0075] Electrical equipment may include household appliances, mobile electronic devices, government electrical equipment, industrial electrical equipment, etc., without limitation.

[0076] To summarize, according to the vehicle-mounted redundant power supply circuit, system, electrical equipment and vehicle of the embodiments of the present application, the first power supply can simultaneously supply power to the electrical device through the first power conversion module and the second power conversion module, thereby avoiding the response time when power switching is performed, and at the same time avoiding the situation where the electrical device cannot be powered due to power switching failure, thereby improving the reliability of power supply to the electrical device.

[0077] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0078] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various application aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the application point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0079] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0080] It should be noted that the above embodiments illustrate rather than limit the present application, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be construed as a limitation to the claims. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A vehicle-mounted redundant power supply circuit, characterized in that: The vehicle-mounted redundant power supply circuit comprises: A first power source, a first power conversion module, and a second power conversion module; A first end of the first power conversion module is connected to the first power source, and a second end of the first power conversion module is connected to an electrical device; A first end of the second power conversion module is connected to a portion of the first power source, and a second end of the second power conversion module is connected to the electrical device; So that the first power source can simultaneously supply power to the electrical device through the first power conversion module and the second power conversion module.

2. The vehicle-mounted redundant power supply circuit according to claim 1, characterized in that: The vehicle-mounted redundant power supply circuit also includes: A second power source is connected to the electrical device so that the second power source can supply power to the electrical device.

3. The vehicle-mounted redundant power supply circuit according to claim 1, characterized in that: The first power conversion module includes a DC / DC conversion module.

4. The vehicle-mounted redundant power supply circuit according to claim 1, characterized in that: The second power conversion module includes: A power distribution switch, an isolation unit and a control unit, wherein the first end of the isolation unit is connected to some cells of the first power supply through the power distribution switch, the second end of the isolation unit is connected to the electrical device, and the control unit is connected to the power distribution switch.

5. A vehicle-mounted redundant power supply system, characterized in that: The vehicle-mounted redundant power supply system comprises a vehicle-mounted redundant power supply circuit as claimed in any one of claims 1 to 4; in, In a non-redundant power supply state, the first power supply supplies power to the power-consuming device through the first power conversion module; In the first redundant power supply state, the first power supply supplies power to the power-consuming device through the second power conversion module; In the second redundant power supply state, the first power supply simultaneously supplies power to the power-consuming device through the first power conversion module and the second power conversion module.

6. The vehicle-mounted redundant power supply system according to claim 5, characterized in that: In the non-redundant power supply state, the second power supply in the vehicle-mounted redundant power supply circuit supplies power to the electrical device at the same time; In the first redundant power supply state, the second power supply simultaneously supplies power to the power-consuming devices.

7. The vehicle-mounted redundant power supply system according to claim 5, characterized in that: When the first power conversion module and the second power supply are both in a normal power supply state, the vehicle-mounted redundant power supply system is in the non-redundant power supply state; When the first power conversion module changes from the normal power supply state to the fault state, the vehicle-mounted redundant power supply system switches from the non-redundant power supply state to the first redundant power supply state; When the second power supply changes from the normal power supply state to the fault state, the vehicle-mounted redundant power supply system switches from the non-redundant power supply state to the second redundant power supply state.

8. The vehicle-mounted redundant power supply system according to claim 5, characterized in that: In the non-redundant power supply state, the control unit in the second power conversion module controls the power distribution switch in the second power conversion module to be in an open state; In the first redundant power supply state or the second redundant power supply state, the control unit controls the power distribution switch to be in a closed state.

9. The vehicle-mounted redundant power supply system according to claim 8, characterized in that: The vehicle-mounted redundant power supply system also includes: A first monitoring and protection module, wherein the first monitoring and protection module is connected to the first power conversion module and is in communication with the control unit; The first monitoring and protection module is used to obtain the state of the first power conversion module and send first fault information to the control unit when the first power conversion module is in a fault state; The control unit is used to control the power distribution switch to be in a closed state according to the first fault information.

10. The vehicle-mounted redundant power supply system according to claim 9, characterized in that: The first monitoring and protection module is further used to disconnect the first power conversion module and the electrical device, or disconnect the first power conversion module and the first power source when the first power conversion module is in the fault state.

11. The vehicle-mounted redundant power supply system according to claim 8, characterized in that: The vehicle-mounted redundant power supply system also includes: A second monitoring and protection module, wherein the second monitoring and protection module is connected to a second power supply in the vehicle-mounted redundant power supply circuit, and the second monitoring and protection module is communicatively connected to the control unit; The second monitoring and protection module is used to obtain the state of the second power supply and send second fault information to the control unit when the second power supply is in a fault state; The control unit is used to control the power distribution switch to be in a closed state according to the second fault information.

12. The vehicle-mounted redundant power supply system according to claim 11, characterized in that: The second monitoring and protection module is further used to disconnect the second power supply and the electrical device when the second power supply is in the fault state.

13. The vehicle-mounted redundant power supply system according to claim 5, characterized in that: The vehicle-mounted redundant power supply system also includes: A first monitoring and protection module, wherein the first monitoring and protection module is connected to the first power conversion module, and the first monitoring and protection module is communicatively connected with a control unit in the second power conversion module; A second monitoring and protection module, wherein the second monitoring and protection module is connected to a second power supply in the vehicle-mounted redundant power supply circuit, and the second monitoring and protection module is communicatively connected to the control unit; The first monitoring and protection module is used to obtain the state of the first power conversion module and send first non-fault information to the control unit when the first power conversion module is in a normal power supply state; The second monitoring and protection module is used to obtain the state of the second power supply and send second non-fault information to the control unit when the second power supply is in a normal power supply state; The control unit is used to control the power distribution switch in the second power conversion module to be in an open state according to the first non-fault information and the second non-fault information.

14. The vehicle-mounted redundant power supply system according to claim 13, characterized in that: The first monitoring and protection module is also in communication connection with the second monitoring and protection module.

15. A vehicle, characterized in that: It comprises the vehicle-mounted redundant power supply system as claimed in any one of claims 5 to 14.

16. An electrical equipment, characterized in that: It comprises the vehicle-mounted redundant power supply system as claimed in any one of claims 5 to 14.

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