Power supply device and method and vehicle

Abstract

The invention discloses a power supply device and method and a vehicle, the power supply device uses a first power supply to output a plurality of first direct currents with different voltage values, so that corresponding working voltages can be provided for a plurality of different types of electricity loads, and the working voltage requirements required by the different types of electricity loads are met; therefore, the power supply device can effectively avoid the problem that an existing voltage platform cannot meet different voltage requirements of a plurality of electric appliances of the vehicle at the same time, and the vehicle only needs to be provided with one power supply device, so that corresponding working voltages can be provided for a plurality of different types of electric loads; therefore, the working voltage requirements of different types of electric loads can be met, and the practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a power supply device, a method, and a vehicle. Background Art

[0002] The voltage platform is an important component of an automobile, responsible for supplying power to the electrical appliances of the automobile. Currently, the mainstream voltage platforms are divided into 12V and 24V according to the voltage output.

[0003] However, for larger commercial vehicles, due to the high power requirements of non-high-voltage components such as steering and cooling, in order to ensure the high-power output of electrical appliances, a 24V or even higher 48V voltage platform is selected. However, for other non-power electrical appliances such as the central computing unit, airbag controller, and BCM (body control module), they also need to be developed and selected following the 24V or 48V voltage platform, which results in the inability to continue using mature 12V products for components, high development costs, and low versatility.

[0004] Therefore, the existing voltage platforms cannot simultaneously meet the different voltage requirements of multiple electrical appliances in a vehicle, resulting in poor practicability. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the object of the present invention is to provide a power supply device, a method, and a vehicle.

[0006] A power supply device provided by the present invention uses a first power supply to output first direct current with multiple different voltage values, so as to provide corresponding working voltages for multiple different types of electrical loads, thereby meeting the working voltage requirements of different types of electrical loads; thus, this power supply device can effectively avoid the problem that the existing voltage platforms cannot simultaneously meet the different voltage requirements of multiple electrical appliances in a vehicle. The vehicle only needs to be equipped with one such power supply device to provide corresponding working voltages for multiple different types of electrical loads, thereby meeting the working voltage requirements of different types of electrical loads, and has high practicability.

[0007] To this end, the second object of the present invention is to provide a vehicle.

[0008] To this end, the third object of the present invention is to provide a power supply method.

[0009] To achieve the above object, a power supply device disclosed in the first aspect of the present invention includes: a first power supply, the first power supply is connected to multiple different types of electrical loads, and the first power supply can output first direct current with multiple different voltage values to provide working voltages for multiple different types of electrical loads one by one, wherein the working voltages required by different types of electrical loads are different.

[0010] According to the power supply device of the present invention, a first direct current with multiple different voltage values is output by using a first power supply, so that corresponding operating voltages can be provided for multiple different types of electrical loads, to meet the operating voltage requirements of different types of electrical loads. Thus, the power supply device can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device to provide corresponding operating voltages for multiple different types of electrical loads, to meet the operating voltage requirements of different types of electrical loads, and has high practicability.

[0011] In addition, the above-mentioned power supply device of the present invention may also have the following additional technical features:

[0012] In some examples, the power supply device further includes: a first switch module, which is connected between the first power supply and multiple different types of the electrical loads, and is used to control the connection state between the first power supply and multiple different types of the electrical loads by its own on-off.

[0013] In some examples, the power supply device further includes: a second power supply, which is connected to multiple different types of the electrical loads, and the second power supply can output a second direct current with a first preset voltage value to supply power to a first target electrical load among multiple different types of the electrical loads, where the operating voltage required by the first target electrical load is adapted to the voltage of the second direct current.

[0014] In some examples, the power supply device further includes: a second switch module, which is connected between the second power supply and multiple different types of the electrical loads, and is used to control the connection state between the second power supply and multiple different types of the electrical loads by its own on-off.

[0015] In some examples, the power supply device further includes: a boost module, which is connected between the second switch module and multiple different types of the electrical loads, and is used to boost the voltage of the second direct current to different degrees and output a third direct current with multiple different voltage values to supply power to a second target electrical load among multiple different types of the electrical loads, where the operating voltage required by the second target electrical load is adapted to the voltage of the third direct current.

[0016] In some examples, the power supply device further includes: a controller, which is used to control the on-off states of the first switch module and the second switch module.

[0017] In some examples, the controller is configured to: when the first power supply does not fail, control the first switch module to turn on and control the second switch module to turn off, so that the first power supply remains connected to multiple different types of electrical loads, and the second power supply is disconnected from multiple different types of electrical loads, in order to supply power to multiple different types of electrical loads through the first power supply; when the first power supply fails, control the first switch module to turn off and control the second switch module to turn on, so that the first power supply is disconnected from multiple different types of electrical loads, and the second power supply remains connected to multiple different types of electrical loads, in order to supply power to multiple different types of electrical loads through the second power supply.

[0018] In some examples, the first power supply includes: a plurality of voltage output ports, and the plurality of voltage output ports are used to output first direct currents with multiple different voltage values in a one-to-one correspondence.

[0019] In some examples, the first switch module includes: a plurality of first switch units, one ends of the plurality of first switch units correspond to the plurality of voltage output units one by one, and the other ends of the plurality of first switch units are connected to multiple different types of electrical loads one by one.

[0020] In some examples, the first switch unit includes at least one first switch tube.

[0021] In some examples, one end of the second switch module is connected to the second power supply, the other end of the second switch module is connected to the first target electrical load, and the other end of the second switch module is also connected to the second target electrical load through the boost module.

[0022] In some examples, the second switch module includes at least one second switch tube.

[0023] In some examples, the boost module includes a diode, the anode of the diode is connected to the other end of the second switch module, and the cathode of the diode is connected to the second target electrical load.

[0024] To achieve the above object, a second aspect of the present invention discloses a vehicle, including the power supply device described in the first aspect of the present invention above.

[0025] The vehicle according to the present invention includes a power supply device that uses a first power supply to output first direct current with multiple different voltage values, so as to provide corresponding operating voltages for multiple different types of electrical loads, thereby meeting the operating voltage requirements of different types of electrical loads. Thus, the power supply device can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device to provide corresponding operating voltages for multiple different types of electrical loads, thereby meeting the operating voltage requirements of different types of electrical loads, and has high practicability.

[0026] To achieve the above object, a third aspect of the present invention discloses a power supply method for the power supply device described in the first aspect of the present invention above. The power supply method includes: when the first power supply does not fail, controlling the first switch module to conduct and controlling the second switch module to disconnect, so that the first power supply is connected to multiple different types of electrical loads, and the second power supply is disconnected from multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the first power supply; when the first power supply fails, controlling the first switch module to disconnect and controlling the second switch module to conduct, so that the first power supply is disconnected from multiple different types of electrical loads, and the second power supply is connected to multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the second power supply.

[0027] The power supply method according to the present invention is used for a power supply device that uses a first power supply to output first direct current with multiple different voltage values, so as to provide corresponding operating voltages for multiple different types of electrical loads, thereby meeting the operating voltage requirements of different types of electrical loads. Thus, the power supply device can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device to provide corresponding operating voltages for multiple different types of electrical loads, thereby meeting the operating voltage requirements of different types of electrical loads, and has high practicability.

[0028] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0030] Figure 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention;

[0031] Figure 2 Schematic structural diagram of a power supply device according to an additional embodiment of the present invention;

[0032] Figure 3 Schematic structural diagram of a power supply device according to another embodiment of the present invention;

[0033] Figure 4 Schematic structural diagram of a power supply device according to another additional embodiment of the present invention;

[0034] Figure 5 Schematic structural diagram of a power supply device according to still another embodiment of the present invention;

[0035] Figure 6 Schematic structural diagram of a power supply device according to yet another embodiment of the present invention;

[0036] Figure 7 Schematic structural diagram of a power supply device according to a specific embodiment of the present invention;

[0037] Figure 8 Flowchart of a power supply method according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] Power supply device - 100; First power supply - 110; First switch module - 120; Second power supply - 130; Second switch module - 140; Boost module - 150; Controller - 160. Detailed description of the specific embodiment

[0040] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0041] Reference will be made below to Figures 1-8 Describe a power supply device, a DC-DC converter, and a vehicle according to an embodiment of the present invention.

[0042] Figure 1 Schematic structural diagram of a power supply device according to an embodiment of the present invention. The power supply device can be applied to, for example, an electric vehicle or a hybrid vehicle. As Figure 1 shown, the power supply device 100 includes: a first power supply 110, the first power supply 110 is connected to a plurality of different types of electrical loads, the first power supply 110 can output a first direct current of a plurality of different voltage values to provide operating voltages for the plurality of different types of electrical loads one by one, wherein the operating voltages required by different types of electrical loads are different.

[0043] In a specific embodiment, the first power supply 110 includes: a first power source and a power supply device. The power supply device is configured to convert the electric energy output by the first power source into first direct current with multiple different voltage values. The first power source is, for example but not limited to, the power battery of a vehicle. The power supply device is, for example but not limited to, a DC / DC converter (direct current / direct current converter). The DC / DC converter converts the high voltage output by the vehicle power battery into multiple low-voltage direct currents. The multiple low-voltage direct currents include, for example but not limited to, 12V and 24V, so as to provide operating voltages for multiple different types of electrical loads. The electrical loads include, for example but not limited to, an EPS (Electric Power Steering, electric power steering system) with an operating voltage of 24V, a fan, and a PEU (Power Electronics Unit, power electronics unit), a BMS (Battery Management System, battery management system), a BSC (Braking Safety Control System, braking safety control system), a CCU (Clutch Control Unit, clutch control unit), an intelligent cockpit domain controller, an intelligent driving domain controller, and an airbag controller with an operating voltage of 12V.

[0044] Specifically, that is, the power supply device 100 uses the first power supply 110 to output first direct current with multiple different voltage values, so as to provide corresponding operating voltages for multiple different types of electrical loads, to meet the operating voltage requirements of different types of electrical loads. Thus, the power supply device 100 can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device 100 to provide corresponding operating voltages for multiple different types of electrical loads, to meet the operating voltage requirements of different types of electrical loads, and has high practicability.

[0045] Figure 2 It is a schematic structural diagram of a power supply device according to an additional embodiment of the present invention. In an embodiment of the present invention, as Figure 2 shown, the power supply device 100 further includes a first switch module 120. The first switch module 120 is connected between the first power supply 110 and multiple different types of electrical loads, and is configured to control the connection state between the first power supply 110 and the multiple different types of electrical loads through its own on / off state.

[0046] In a specific embodiment, the first switch module 120 may include multiple switch units. The multiple switch units correspond to the multiple electrical loads one by one. By controlling the on / off states of the multiple switch units in the first switch module 120, the connection states between the corresponding different types of electrical loads and the first power supply 110 can be controlled.

[0047] Specifically, the first switch module 120 is used to connect the first power supply 110 and multiple different types of electrical loads. By controlling the on / off state of the first switch module 120, the connection state between the first power supply 110 and the multiple different types of electrical loads can be controlled, that is, the on / off states of the multiple different types of electrical loads can be controlled.

[0048] At the same time, the first switch module 120 connects the first power supply 110 and multiple different types of electrical loads, and controls the on / off states of the multiple different types of electrical loads, which can also play a role in protecting the circuit. When a certain electrical load is short-circuited or other types of faults occur, the first switch module 120 disconnects in time to ensure the safety of the first power supply 110.

[0049] Figure 3 It is a schematic structural diagram of a power supply device according to another embodiment of the present invention. In one embodiment of the present invention, as Figure 3 shown, the power supply device 100 further includes a second power supply 130. The second power supply 130 is connected to multiple different types of electrical loads, and the second power supply 130 can output a second direct current with a first preset voltage value to supply power to a first target electrical load among the multiple different types of electrical loads, where the operating voltage required by the first target electrical load is adapted to the voltage of the second direct current.

[0050] In a specific embodiment, the second power supply 130 is, for example but not limited to, a storage battery. The storage battery can output a second direct current with a first preset voltage value. The second direct current is, for example but not limited to, 12V direct current. The storage battery supplies power to a first target electrical load among the multiple different types of electrical loads. The first target electrical load includes, for example but not limited to, a PEU (Power Electronics Unit), a BMS (Battery Management System), a BSC (Braking Safety Control System), a CCU (Clutch Control Unit), an intelligent cockpit domain controller, an intelligent driving domain controller, and an airbag controller with an operating voltage of 12V.

[0051] Specifically, when the first power supply 110 fails or for other reasons cannot supply power to the electrical load, the power supply device 100 can utilize the second power supply 130 to output a second direct current with a first preset voltage value to supply power to the first target electrical load among multiple different types of electrical loads, thereby meeting the working voltage requirements of the first target electrical load; thus, the power supply device 100 supplies power to the electrical load jointly through the first power supply 110 and the second power supply 130, ensuring reliable power supply to the electrical load, and thus ensuring the safety of the vehicle.

[0052] Figure 4 is a schematic structural diagram of a power supply device according to another additional embodiment of the present invention. In one embodiment of the present invention, as Figure 4 shown, the power supply device 100 further includes a second switch module 140. The second switch module 140 is connected between the second power supply 130 and multiple different types of electrical loads, and is used to control the connection state between the second power supply 130 and multiple different types of electrical loads through its own on-off state.

[0053] Specifically, that is, by using the second switch module 140 to connect the second power supply 130 and multiple different types of electrical loads, and by controlling the on-off state of the second switch module 140, the connection state between the second power supply 130 and multiple different types of electrical loads can be controlled, that is, the on-off power states of multiple different types of electrical loads can be controlled.

[0054] At the same time, the second switch module 140 is connected to the second power supply 130 and multiple different types of electrical loads, and controls the on-off power states of multiple different types of electrical loads, and can also play a role in protecting the circuit. When a certain electrical load is short-circuited or other types of faults occur, the second switch module 140 disconnects in time to ensure the safety of the second power supply 130.

[0055] Figure 5 is a schematic structural diagram of a power supply device according to still another embodiment of the present invention. In one embodiment of the present invention, as Figure 5 shown, the power supply device 100 further includes a boost module 150. The boost module 150 is connected between the second switch module 140 and multiple different types of electrical loads, and is used to boost the voltage of the second direct current to different degrees and output third direct currents with multiple different voltage values to supply power to the second target electrical load among multiple different types of electrical loads, where the working voltage required by the second target electrical load is adapted to the voltage of the third direct current.

[0056] In a specific embodiment, the second power supply 130 is, for example but not limited to, a vehicle battery. The battery can output a second direct current with a first preset voltage value. The second direct current is, for example but not limited to, 12V direct current. The boost module 150 is connected to the second power supply 130 through the second switch module 140. The boost module 150 boosts the voltage of the second direct current output by the second power supply 130 to different degrees and outputs third direct currents with multiple different voltage values. The third direct current is, for example but not limited to, 24V direct current. The boost module 150 supplies power to a second target electrical load among multiple different types of electrical loads. The second target electrical load includes, for example but not limited to, an EPS (Electric Power Steering) with a working voltage of 24V and a fan.

[0057] Specifically, when the first power supply 110 fails or for other reasons cannot supply power to the electrical load, the power supply device 100 can not only utilize the second power supply 130 to output a second direct current with a first preset voltage value to supply power to a first target electrical load among multiple different types of electrical loads, but also utilize the boost module 150 to boost the voltage of the second direct current to different degrees and output third direct currents with multiple different voltage values to supply power to a second target electrical load among multiple different types of electrical loads, thereby further ensuring the safety and functional perfection of the vehicle.

[0058] During this process, the second switch module 140 connects the second power supply 130 and the boost module 150. By controlling the on / off state of the second switch module 140, the connection state between the second power supply 130 and the boost module 150 can be controlled, that is, the on / off states of multiple different types of electrical loads can be controlled.

[0059] At the same time, the second switch module 140 connects the second power supply 130 and the boost module 150 and controls the on / off states of multiple different types of electrical loads, which can also play a role in protecting the circuit. When a certain electrical load or the boost module 150 is short-circuited or has other types of faults, the second switch module 140 disconnects in time to ensure the safety of the second power supply 130.

[0060] Figure 6 It is a schematic structural diagram of a power supply device according to another embodiment of the present invention. In an embodiment of the present invention, as Figure 6 shown, the power supply device 100 further includes a controller 160. The controller 160 is used to control the on / off states of the first switch module 120 and the second switch module 140.

[0061] Specifically, the power supply device 100 controls the on / off states of the first switch module 120 and the second switch module 140 through the controller 160 to control the connection states of the first power supply 110 and the second power supply 130 with multiple different types of electrical loads, that is, to select the first power supply 110 or the second power supply 130 to supply power to the electrical loads, ensuring reliable power supply to the electrical loads, and thus ensuring the safety of the vehicle.

[0062] In an embodiment of the present invention, the controller 160 is configured to: when the first power supply 110 does not fail, control the first switch module 120 to conduct and control the second switch module 140 to disconnect, so that the first power supply 110 remains connected to multiple different types of electrical loads and the second power supply 130 is disconnected from multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the first power supply 110; when the first power supply 110 fails, control the first switch module 120 to disconnect and control the second switch module 140 to conduct, so that the first power supply 110 is disconnected from multiple different types of electrical loads and the second power supply 130 remains connected to multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the second power supply 130.

[0063] In a specific embodiment, the first power supply 110 includes, for example, but is not limited to, the power battery and the DC / DC converter of the vehicle. The first power supply 110 serves as the main power supply, and the second power supply 130 includes, for example, but is not limited to, the storage battery of the vehicle. The second power supply 130 serves as the auxiliary power supply. When the first power supply 110 does not fail, the controller 160 controls the first switch module 120 to conduct and controls the second switch module 140 to disconnect, so that the first power supply 110 remains connected to multiple different types of electrical loads and the second power supply 130 is disconnected from multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the first power supply 110; when the first power supply 110 fails, the controller 160 controls the first switch module 120 to disconnect and controls the second switch module 140 to conduct, so that the first power supply 110 is disconnected from multiple different types of electrical loads and the second power supply 130 remains connected to multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the second power supply 130.

[0064] Thus, the power supply device 100 preferentially controls the first power supply 110 to supply power to the electrical loads by using the controller 160. When the first power supply 110 cannot supply power to the electrical loads due to a short circuit or other faults, the power supply device 100 uses the controller 160 to control the second power supply 130 to supply power to the electrical loads, thereby ensuring reliable power supply to the electrical loads and thus ensuring the safety of the vehicle.

[0065] In one embodiment of the present invention, the first power supply 110 includes: a plurality of voltage output ports for outputting first direct currents with a plurality of different voltage values in one-to-one correspondence.

[0066] Specifically, the first power supply 110 is provided with a plurality of voltage output ports, and each voltage output port outputs a first direct current with a different voltage value. Thus, different types of electrical loads only need to be connected to the voltage output port corresponding to their required operating voltage, so as to meet the operating voltage requirements of different types of electrical loads. Therefore, the power supply device 100 can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device 100 to provide the corresponding operating voltage for multiple different types of electrical loads to meet the operating voltage requirements of different types of electrical loads, and has high practicability.

[0067] In one embodiment of the present invention, the first switch module 120 includes: a plurality of first switch units, one end of the plurality of first switch units corresponding to the plurality of voltage output units in one-to-one correspondence, and the other end of the plurality of first switch units corresponding to the connection of a plurality of different types of electrical loads.

[0068] Specifically, the first switch module 120 includes a plurality of first switch units, and the plurality of first switch units correspond to the plurality of electrical loads in one-to-one correspondence. By controlling the on-off states of the plurality of first switch units in the first switch module 120, the connection states of the corresponding different types of electrical loads to the first power supply 110 can be controlled, that is, the on-off states of the plurality of different types of electrical loads can be controlled.

[0069] At the same time, the plurality of first switch units in the first switch module 120 connect the first power supply 110 and a plurality of different types of electrical loads, and control the connection states of the corresponding different types of electrical loads to the first power supply 110, and can also play a role in protecting the circuit. When a certain electrical load is short-circuited or other types of faults occur, the corresponding first switch unit in the first switch module 120 is disconnected in time to ensure the safety of the first power supply 110.

[0070] In one embodiment of the present invention, the first switch unit includes at least one first switch tube.

[0071] Specifically, each first switch unit includes at least one first switch tube. When all the first switch tubes included in the first switch unit are turned on, the first switch unit is turned on, and the first power supply 110 supplies power to the corresponding different types of electrical loads. When any one of the first switch tubes included in the first switch unit is turned off, the first switch unit is turned off, and the first power supply 110 no longer supplies power to the corresponding different types of electrical loads.

[0072] Thus, the first switch module 120 includes a plurality of first switch units, and the plurality of first switch units correspond to a plurality of electrical loads one by one. Each first switch unit includes at least one first switch tube. By controlling the on / off states of the first switch tubes in the plurality of first switch units, the connection state between the corresponding different types of electrical loads and the first power supply 110 can be controlled, that is, the on / off states of the plurality of different types of electrical loads can be controlled.

[0073] At the same time, the plurality of first switch units in the first switch module 120 are connected to the first power supply 110 and a plurality of different types of electrical loads, and control the connection state between the corresponding different types of electrical loads and the first power supply 110, and can also play a role in protecting the circuit. When a certain electrical load is short-circuited or other types of faults occur, the first switch tube in the corresponding first switch unit is turned off in time to ensure the safety of the first power supply 110.

[0074] In an embodiment of the present invention, one end of the second switch module 140 is connected to the second power supply 130, the other end of the second switch module 140 is connected to the first target electrical load, and the other end of the second switch module 140 is also connected to the second target electrical load through the boost module 150.

[0075] Specifically, that is, one end of the second switch module 140 is connected to the second power supply 130, the other end of the second switch module 140 is connected to the first target electrical load, and the other end of the second switch is also connected to the second target electrical load through the boost module 150. By controlling the on / off state of the second switch module 140, not only can the connection state between the second power supply 130 and the first target electrical load be controlled, but also the connection state between the second power supply 130 and the boost module 150 and the second target electrical load can be controlled, that is, the on / off states of the plurality of different types of electrical loads can be controlled.

[0076] At the same time, the second switch module 140 controls the on / off states of the plurality of different types of electrical loads, and can also play a role in protecting the circuit. When the first target electrical load or the second target electrical load is short-circuited or other types of faults occur, the second switch module 140 is turned off in time to ensure the safety of the second power supply 130.

[0077] In one embodiment of the present invention, the second switch module 140 includes at least one second switching tube.

[0078] In a specific embodiment, the second switch module 140 includes two second switching tubes. One second switching tube is connected to the second power supply 130 and the first target electrical load, and the other second switching tube is connected to the second power supply 130 and the boost module 150. By controlling the on / off state of one of the second switching tubes, the connection state between the second power supply 130 and the first target electrical load can be controlled. By controlling the on / off state of the other second switching tube, the connection state between the second power supply 130, the boost module 150, and the second target electrical load can be controlled, thereby controlling the on / off states of multiple different types of electrical loads.

[0079] Specifically, when one of the second switching tubes is turned on, the second power supply 130 supplies power to the first target electrical load. When one of the second switching tubes is turned off, the second power supply 130 no longer supplies power to the first target electrical load. When the other second switching tube is turned on, the second power supply 130 supplies power to the second target electrical load after being boosted by the boost module 150. When the other second switching tube is turned off, the second power supply 130 no longer supplies power to the second target electrical load after being boosted by the boost module 150.

[0080] Thus, the second switch module 140 includes at least one second switching tube. By controlling the on / off state of at least one second switching tube, the connection states between the first target electrical load and the second target electrical load and the second power supply 130 can be controlled, that is, the on / off states of multiple different types of electrical loads can be controlled.

[0081] At the same time, at least one second switching tube in the second switch module 140 is connected to the second power supply 130, the first target electrical load, and the second target electrical load, and controls the connection states between the first target electrical load and the second target electrical load and the second power supply 130, and can also play a role in protecting the circuit. When the first target electrical load or the second target electrical load is short-circuited or other types of faults occur, the corresponding second switching tube is promptly turned off to ensure the safety of the second power supply 130.

[0082] In one embodiment of the present invention, the boost module 150 includes a diode. The anode of the diode is connected to the other end of the second switch module 140, and the cathode of the diode is connected to the second target electrical load.

[0083] Specifically, by directly setting a diode between the second switch module 140 and the second target electrical load, with the anode of the diode connected to the other end of the second switch module 140 and the cathode of the diode connected to the second target electrical load, the current flow can be from the second power supply 130 to the second switch module 140, and will not flow from the first power supply 110 to the second power supply 130, thus ensuring the safety of the second power supply 130 and the vehicle.

[0084] Figure 7 is a schematic structural diagram of a power supply device according to a specific embodiment of the present invention. In Figure 7 the specific embodiment shown, the first power supply 110 includes: a first power source and a power supply device. The first power source is the vehicle's power battery, and the power supply device is a DC / DC converter. The DC / DC converter converts the high voltage output by the vehicle power battery into low-voltage direct current of 12V and 24V. The second power supply 130 is a 12V battery. The boost module 150 converts the 12V output by the battery into 24V low-voltage direct current. The electrical loads include an EPS (Electric Power Steering, electric power steering system) with a working voltage of 24V, a fan, and a PEU (Power Electronics Unit, power electronics unit), a BMS (Battery Management System, battery management system), a BSC (Braking Safety Control System, braking safety control system), a CCU (Clutch Control Unit, clutch control unit), an intelligent cockpit domain controller, an intelligent driving domain controller, and an airbag controller with a working voltage of 12V.

[0085] In this specific embodiment, when the DC / DC is working properly, the DC / DC outputs two power supplies of 24V and 12V. The first switch module 120 is connected to the DCDC and disconnects the branch isolation battery, playing a role in protecting the circuit.

[0086] When the DC / DC fails, the second switch module 140 is connected to the 12V battery and the boost module 150. The first switch module 120 isolates the DCDC. The 12V battery supplies power to the whole vehicle, and the 12V is boosted to 24V by the boost module 150 to distribute power to the 24V electrical appliances.

[0087] Therefore, this power supply device has inputs and outputs of two voltages, 12V and 24V, has the ability to distribute power with multiple voltages, and the two voltages are independently distributed. Moreover, the boost module can boost 12V to 24V to ensure the function of distributing power to the 24V electrical appliances of the whole vehicle when the DCDC fails.

[0088] In summary, the power supply device 100 uses the first power supply 110 to output the first direct current with multiple different voltage values, so as to provide corresponding working voltages for multiple different types of electrical loads, and meet the working voltage requirements of different types of electrical loads. Therefore, the power supply device 100 can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device 100 to provide corresponding working voltages for multiple different types of electrical loads, and meet the working voltage requirements of different types of electrical loads, with high practicability.

[0089] Another embodiment of the present invention also proposes a vehicle. The vehicle includes the power supply device described in the above embodiment of the present invention.

[0090] In a specific embodiment, the vehicle includes, but is not limited to, an electric vehicle, a hybrid vehicle, etc. The vehicle uses the above power supply device to supply power to the electrical appliances of the vehicle.

[0091] The specific implementation manner of the vehicle is similar to that of the above power supply device. Therefore, for the specific implementation details of the vehicle, reference can be made to the specific implementation manner part of the above power supply device. To reduce redundancy, it will not be elaborated here.

[0092] According to the vehicle of the embodiment of the present invention, the power supply device included therein uses the first power supply to output the first direct current with multiple different voltage values, so as to provide corresponding working voltages for multiple different types of electrical loads, and meet the working voltage requirements of different types of electrical loads. Therefore, the power supply device can effectively avoid the problem that the existing voltage platform cannot simultaneously meet the different voltage requirements of multiple vehicle electrical appliances. The vehicle only needs to be equipped with one such power supply device to provide corresponding working voltages for multiple different types of electrical loads, and meet the working voltage requirements of different types of electrical loads, with high practicability.

[0093] Figure 8 is a flowchart of a power supply method according to an embodiment of the present invention. As Figure 8 shown, the power supply method proposed by the embodiment of the present invention is used for the power supply device described in the above embodiment of the present invention. The power supply method includes:

[0094] S1: Determine whether the first power supply fails.

[0095] S2: When the first power supply does not fail, control the first switch module to conduct and control the second switch module to disconnect, so that the first power supply is connected to multiple different types of electrical loads, and the second power supply is disconnected from multiple different types of electrical loads, and supply power to multiple different types of electrical loads through the first power supply.

[0096] S3: When the first power supply fails, control the first switch module to disconnect and control the second switch module to conduct, so as to disconnect the first power supply from multiple different types of electrical loads and keep the second power supply connected to multiple different types of electrical loads, so as to supply power to multiple different types of electrical loads through the second power supply.

[0097] Specifically, for the power supply method according to the embodiment of the present invention, the first power supply is preferentially controlled to supply power to the electrical load. When the first power supply cannot supply power to the electrical load due to a short circuit or other faults, the second power supply is controlled to supply power to the electrical load, thereby ensuring reliable power supply to the electrical load and ensuring the safety of the vehicle.

[0098] In addition, other components and functions of the vehicle according to the above embodiments of the present invention are known to those of ordinary skill in the art. To reduce redundancy, they will not be described in detail.

[0099] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0100] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A power supply device, characterized in that: include: A first power supply, wherein the first power supply is connected to a plurality of different types of electrical loads, and the first power supply can output a plurality of first direct currents with different voltage values ​​to provide working voltages for the plurality of different types of electrical loads in a one-to-one correspondence, wherein different types of electrical loads require different working voltages.

2. The power supply device according to claim 1, characterized in that: Also includes: The first switch module is connected between the first power supply and a plurality of different types of electrical loads, and is used to control the connection state between the first power supply and the plurality of different types of electrical loads by turning on and off itself.

3. The power supply device according to claim 2, characterized in that: Also includes: A second power supply, the second power supply is connected to a plurality of different types of electrical loads, the second power supply can output a second direct current with a first preset voltage value to supply power to a first target electrical load among the plurality of different types of electrical loads, wherein the operating voltage required by the first target electrical load is adapted to the voltage of the second direct current.

4. The power supply device according to claim 3, characterized in that: Also includes: The second switch module is connected between the second power supply and a plurality of different types of electrical loads, and is used to control the connection state of the second power supply and the plurality of different types of electrical loads by turning on and off itself.

5. The power supply device according to claim 4, characterized in that: Also includes: A boost module, the boost module is connected between the second switch module and a plurality of different types of electrical loads, and is used to boost the voltage of the second direct current to different degrees, and output a third direct current with a plurality of different voltage values, so as to supply power to a second target electrical load among the plurality of different types of electrical loads, wherein the operating voltage required by the second target electrical load is adapted to the voltage of the third direct current.

6. The power supply device according to claim 4, characterized in that: Also includes: A controller, the controller is used to control the on / off state of the first switch module and the second switch module, the controller is used to: When the first power supply does not fail, the first switch module is controlled to be turned on, and the second switch module is controlled to be turned off, so that the first power supply remains connected to the multiple different types of power loads, and the second power supply is disconnected from the multiple different types of power loads, so that the first power supply is used to supply power to the multiple different types of power loads; When the first power supply fails, the first switch module is controlled to be disconnected, and the second switch module is controlled to be turned on, so that the first power supply is disconnected from the multiple different types of power loads, and the second power supply remains connected to the multiple different types of power loads, so that the multiple different types of power loads are powered by the second power supply.

7. The power supply device according to claim 2, characterized in that: The first power supply includes: a plurality of voltage output ports, and the plurality of voltage output ports are used to output a plurality of first direct currents with different voltage values ​​in a one-to-one correspondence.

8. The power supply device according to claim 5, characterized in that: One end of the second switch module is connected to the second power supply, the other end of the second switch module is connected to the first target power load, and the other end of the second switch module is also connected to the second target power load through the boost module.

9. A vehicle, characterized in that: Comprising the power supply device as described in any one of claims 1-8.

10. A power supply method, characterized in that: For use in the power supply device according to any one of claims 5 to 8, the power supply method comprises: When the first power supply does not fail, the first switch module is controlled to be turned on, and the second switch module is controlled to be turned off, so that the first power supply remains connected to the plurality of different types of electrical loads, and the second power supply is disconnected from the plurality of different types of electrical loads, so that the first power supply is used to supply power to the plurality of different types of electrical loads; When the first power supply fails, the first switch module is controlled to be disconnected, and the second switch module is controlled to be turned on, so that the first power supply is disconnected from the multiple different types of power loads, and the second power supply remains connected to the multiple different types of power loads, so that the multiple different types of power loads are powered by the second power supply.

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