Power supply system, controller and vehicle

Abstract

The invention discloses a power supply system, a controller and a vehicle, the system comprises a first power supply module, a second power supply module and a voltage transformation module, the first power supply module and the second power supply module are electrically connected with the voltage transformation module, the first power supply module is configured to output a first target voltage, and the second power supply module is configured to output a second target voltage. The voltage transformation module is configured to perform voltage transformation processing on the first target voltage so as to output a second target voltage. Therefore, through the voltage transformation module which is connected with the first power supply module and can convert the first target voltage output by the first power supply module into the second target voltage, the load in the vehicle can operate based on the second target voltage output by the second power supply module and can operate based on the second target voltage output by the voltage transformation module; the stable power supply of the vehicle load is ensured, and the stable operation of the vehicle load and the driving experience of the user in the vehicle are ensured.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a power supply system, a controller and a vehicle. Background Art

[0002] In order to meet the operating requirements of low-voltage electrical equipment in the car, such as multimedia displays and vehicle controllers, the relevant technology usually uses DCDC (Direct Current Direct Current Converter) to convert the output voltage of the vehicle's power battery into 12V voltage to provide it to various low-voltage electrical equipment. However, when some low-voltage components have high-power operating requirements, the power obtained by the low-voltage electrical equipment through DCDC may be insufficient, making it difficult for the low-voltage electrical equipment and the vehicle to operate normally, thereby affecting the user experience. Summary of the invention

[0003] The present application provides a power supply system, a controller and a vehicle.

[0004] The embodiment of the present application provides a power supply system for a vehicle, the system comprising a first power supply module, a second power supply module and a transformer module, the first power supply module and the second power supply module are both electrically connected to the transformer module;

[0005] The first power supply module is configured to output a first target voltage;

[0006] The second power supply module is configured to output a second target voltage;

[0007] The voltage transformation module is configured to transform the first target voltage to output the second target voltage.

[0008] Thus, in the embodiment of the present application, a transformer module can be connected to the first power supply module and can convert the first target voltage output by the first power supply module into a second target voltage, so that the load in the vehicle can operate based on the second target voltage output by the second power supply module, and can also operate based on the second target voltage output by the transformer module, thereby ensuring the stable power supply of the vehicle load, and further ensuring the stable operation of the vehicle load and the driving experience of the users in the vehicle.

[0009] In certain embodiments of the present application, the voltage transformation module is further configured to transform the second target voltage to output the first target voltage.

[0010] In this way, in the embodiment of the present application, the load directly connected to the first power supply module can operate based on the first target voltage provided by the first power supply module, and can also operate based on the first target voltage provided by the transformer module, and the load directly connected to the second power supply module can operate based on the second target voltage provided by the second power supply module, and can also operate based on the second target voltage provided by the transformer module, thereby further ensuring the stable operation of the vehicle load.

[0011] In certain embodiments of the present application, the first power supply module includes: a first battery, a first voltage transformation unit electrically connected to the first battery;

[0012] The first transformer unit is electrically connected to the transformer module;

[0013] The first voltage transformation unit is configured to transform the output voltage of the first battery to output a first target voltage.

[0014] Thus, in the embodiment of the present application, the first power supply module can be realized based on the first battery and the first transformer unit electrically connected to the first battery.

[0015] In certain embodiments of the present application, the second power supply module includes: a first battery, and a second voltage transformation unit electrically connected to the first battery;

[0016] The second transformer unit is electrically connected to the transformer module;

[0017] The second voltage transformation unit is configured to transform the output voltage to output a second target voltage.

[0018] Thus, in the embodiment of the present application, the second power supply module can be realized based on the first battery and the second transformer unit.

[0019] In certain embodiments of the present application, the voltage transformation module is configured to transform the second target voltage to output the first target voltage when the first voltage transformation unit operates abnormally.

[0020] Thus, in the embodiment of the present application, when the first transformation unit operates abnormally, the second target voltage can be transformed to determine the first target voltage.

[0021] In certain embodiments of the present application, the system further comprises: a second battery;

[0022] The second power supply module and the voltage transformation module are both electrically connected to the second battery;

[0023] The second power supply module is configured to output a second target voltage to the second battery, so that the second battery can be charged according to the received second target voltage and can output the second target voltage.

[0024] Thus, in the embodiment of the present application, the second power supply module can output the second target voltage to the second battery, so that the second battery can be charged according to the received second target voltage and can output the second target voltage.

[0025] In certain embodiments of the present application, the voltage transformation module is connected to the second battery, and the voltage transformation module is further configured to transform the second target voltage output by the second battery to output the first target voltage.

[0026] Thus, in the embodiment of the present application, the voltage conversion module can receive the second target voltage output by the second battery, and convert the second target voltage provided by the second battery into the first target voltage for output.

[0027] In certain embodiments of the present application, the transformation module is configured to transform the first target voltage to output the second target voltage when the second transformation unit operates abnormally.

[0028] Thus, in the embodiment of the present application, when the second transformation unit operates abnormally, the first target voltage can be transformed to output the second target voltage.

[0029] In certain embodiments of the present application, the system includes a first circuit protection unit, the first transformer unit includes a first secondary loop, the first secondary loop, the first circuit protection unit and the transformer module are electrically connected in sequence;

[0030] The voltage transformation module is configured to, when the first secondary loop is short-circuited to ground, transform the second target voltage to output the first target voltage to the first circuit protection unit;

[0031] The first circuit protection unit is configured to enter a preset working state upon receiving the first target voltage, so as to disconnect the first secondary loop from the voltage transformation module.

[0032] Thus, in the embodiment of the present application, when the first secondary loop is short-circuited to the ground, the second target voltage can be transformed to determine the first target voltage, and the first target voltage can be output to the first circuit protection unit to make the first secondary loop enter a preset working state, thereby disconnecting the connection between the first secondary loop and the transformer module, thereby ensuring the safe operation of the power supply system and the vehicle load.

[0033] In certain embodiments of the present application, the system includes a second circuit protection unit, the second transformer unit includes a second secondary loop, and the second secondary loop is electrically connected to the transformer module through the second circuit protection unit;

[0034] The voltage transformation module is configured to transform the first target voltage when the second secondary loop is short-circuited to ground, determine the second target voltage, and output the second target voltage to the second circuit protection unit;

[0035] The second circuit protection unit is configured to enter a preset working state upon receiving the second target voltage, so as to disconnect the second secondary loop from the voltage transformation module.

[0036] Thus, in the embodiment of the present application, when the second secondary circuit is short-circuited to the ground, the first target voltage can be transformed to determine the second target voltage, and the second target voltage can be output to the second circuit protection unit to enable the second circuit protection unit to enter a preset working state, thereby disconnecting the connection between the second secondary circuit and the transformer module, thereby ensuring the safe operation of the power supply system and the vehicle load.

[0037] In certain embodiments of the present application, the first transformer unit includes at least one of a unidirectional DC-DC conversion circuit, a resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard switching circuit.

[0038] In certain embodiments of the present application, the second transformer unit includes at least one of a unidirectional DC-DC conversion circuit, a resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard switching circuit.

[0039] In certain embodiments of the present application, the voltage conversion module includes a bidirectional DC-DC conversion circuit and / or a step-up-down circuit.

[0040] The implementer of the present application provides a controller, which is applied to the above-mentioned power supply system, wherein the controller is connected to the transformer module, and the controller is configured to control the transformer module to transform the first target voltage to output the second target voltage.

[0041] An embodiment of the present application provides a vehicle, including the above-mentioned power supply system, or including the above-mentioned controller.

[0042] The controller and vehicle provided in the embodiments of the present application can be connected to a first power supply module and a transformer module capable of converting a first target voltage output by the first power supply module into a second target voltage, so that the load in the vehicle can operate based on the second target voltage output by the second power supply module, and can also operate based on the second target voltage output by the transformer module, thereby ensuring a stable power supply to the vehicle load, and further ensuring the stable operation of the vehicle load and the driving experience of the users in the vehicle.

[0043] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0045] Figure 1 Schematic diagram of the system for supplying electricity to the vehicle;

[0046] Figure 2 A schematic diagram of a power supply system in some embodiments of the present application;

[0047] Figure 3 A schematic diagram of an application scenario in certain embodiments of the present application. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0049] In the related art, please refer to Figure 1 , Figure 1 This is a schematic diagram of the vehicle power supply system. That is, the vehicle is usually equipped with a DCDC (Direct Current Direct Current Converter) connected to a large battery (i.e., power battery) so that the power battery can output a 12V voltage through the DCDC, thereby providing energy for a small battery (such as a low-voltage storage battery) and other low-voltage loads.

[0050] Furthermore, with the improvement of the level of electronicization and intelligence of vehicles, the number of low-voltage electrical equipment in vehicles has gradually increased, such as vehicle controllers, domain controllers, multimedia display screens, etc., which has led to an increase in low-voltage power consumption in vehicles. In addition, for high-end vehicles and off-road vehicles, these vehicles have more functions and the capabilities of various functions are relatively powerful, so the demand for low-voltage power consumption is higher.

[0051] Furthermore, for high-temperature areas where the outdoor temperature is higher than 50°C all year round, vehicles sold to these areas must meet more stringent heat dissipation requirements. In other words, the high-power operation requirements of heat dissipation components such as water pumps and fans in the vehicles are relatively high. Therefore, while meeting the low-voltage power requirements of various low-voltage electrical equipment, if the operation requirements of heat dissipation components such as water pumps and fans in vehicles sold in high-temperature areas are also required, insufficient voltage supply to heat dissipation components or other low-voltage electrical equipment may occur.

[0052] It is understandable that when the vehicle contains a single DCDC, a single DCDC is usually used to output a higher low-voltage output current 12V output current, and then power is supplied through parallel rectifiers. However, as the power increases, a single DCDC cannot meet the needs of the entire vehicle. In addition, if the 12V output current is too large, if a large wire diameter or multi-wire parallel power supply is adopted, it will bring certain hardware costs and high operational difficulties. In addition, the design of 12V power loads (such as electric drive modules) is difficult, the inductor winding is difficult, and the loss is large. In addition, once the 12V power output is abnormal or fails, the entire vehicle stops working.

[0053] Based on the above problems you may encounter, please refer to Figure 2 The embodiment of the present application provides a power supply system 100 for a vehicle, the power supply system 100 includes a first power supply module 110, a second power supply module 120 and a transformer module 130, the first power supply module 110 and the second power supply module 120 are both electrically connected to the transformer module 130, the first power supply module 110 is configured to output a first target voltage, the second power supply module 120 is configured to output a second target voltage, and the transformer module 130 is configured to transform the first target voltage to output a second target voltage.

[0054] The embodiment of the present application further provides a controller, which is applied to the above-mentioned system. The controller is connected to the transformer module, and the controller is configured to control the transformer module to transform the first target voltage to output a second target voltage.

[0055] Specifically, in the embodiment of the present application, the vehicle includes a first power supply module 110 and a second power supply module 120, and the first power supply module 110 and the second power supply module 120 are responsible for supplying power to different vehicle loads. In one example, the first power supply module 110 can be electrically connected to a low-voltage battery and is responsible for supplying power to the low-voltage battery, and the second power supply module 120 can be electrically connected to heat dissipation components such as fans and water pumps and is responsible for supplying power to these heat dissipation components.

[0056] Furthermore, considering that the vehicle load (let the load be L1) connected to the second power supply module 120 has a high-power operation requirement, and the power supply capacity of the second power supply module 120 itself is limited, it may not be able to meet the high-power operation requirement of the vehicle load L1. Therefore, in the embodiment of the present application, the transformer module 130 connected to the first power supply module 110 can receive the first target voltage output by the "first power supply module 110 not connected to the vehicle load L1", and convert the first target voltage into a voltage that the vehicle load L1 can receive (i.e., the second target voltage), and output the second target voltage to the vehicle load L1, so that the power supply of the vehicle load L1 is provided by one or both of the second power supply module 120 and the transformer module 130, thereby meeting the high-power operation requirement of the vehicle load L1.

[0057] Thus, in the embodiment of the present application, a transformer module 130 connected to the first power supply module 110 and capable of converting the first target voltage output by the first power supply module 110 into a second target voltage can be used so that the load in the vehicle can operate based on the second target voltage output by the second power supply module 120, and can also operate based on the second target voltage output by the transformer module 130, thereby ensuring a stable power supply to the vehicle load, and further ensuring a stable operation of the vehicle load and a driving experience for the users in the vehicle.

[0058] In some embodiments of the present application, the voltage transformation module 130 is further configured to transform the second target voltage to output the first target voltage.

[0059] The controller of the embodiment of the present application is further configured to control the voltage transformation module to transform the second target voltage to output the first target voltage.

[0060] Specifically, in the embodiment of the present application, considering that the vehicle load (let the load be L2) connected to the first power supply module 110 has a high-power operation requirement, and the power supply capacity of the first power supply module 110 itself is limited, it may not be able to meet the high-power operation requirement of the vehicle load L2. Therefore, in the embodiment of the present application, the transformer module 130 connected to the second power supply module 120 can receive the second target voltage output by the "second power supply module 120 not connected to the vehicle load L2", and convert the second target voltage into a voltage that the vehicle load L2 can receive (i.e., the first target voltage), and output the first target voltage to the vehicle load L2, so that the power supply of the vehicle load L2 is provided by one or both of the first power supply module 110 and the transformer module 130, thereby meeting the high-power operation requirement of the vehicle load L2.

[0061] In this way, in the embodiment of the present application, the load directly connected to the first power supply module 110 can operate based on the first target voltage provided by the first power supply module 110, and can also operate based on the first target voltage provided by the transformer module 130, and the load directly connected to the second power supply module 120 can operate based on the second target voltage provided by the second power supply module 120, and can also operate based on the second target voltage provided by the transformer module 130, thereby further ensuring the stable operation of the vehicle load.

[0062] See also Figure 3 In certain embodiments of the present application, the first power supply module 110 includes: a first battery 101, and a first transformer unit 111 electrically connected to the first battery 101; the first transformer unit is electrically connected to the transformer module; the first transformer unit is configured to transform the output voltage of the first battery to output a first target voltage.

[0063] Specifically, in the embodiment of the present application, the first battery 101 and the first transformer unit 111 together constitute the first power supply module 110. At the same time, the first battery 101 can output voltage to the first transformer unit 111, and the first transformer unit 111 converts the received voltage into a 48V voltage (i.e., the first target voltage) and outputs it to the vehicle heat dissipation component 201.

[0064] Thus, in the embodiment of the present application, the first power supply module can be realized based on the first battery and the first transformer unit electrically connected to the first battery.

[0065] See also Figure 3 In certain embodiments of the present application, the second power supply module includes: a first battery and a second transformer unit electrically connected to the first battery; the second transformer unit is electrically connected to the transformer module; the second transformer unit is configured to transform the output voltage to output a second target voltage.

[0066] Specifically, in the embodiment of the present application, the first battery 101 and the second transformer unit 121 together constitute the second power supply module 120. The first battery 101 can output voltage to the second transformer unit 121, and the second transformer unit 121 converts the received voltage into a 12V voltage (i.e., a second target voltage) and outputs it to the low voltage load 202 and the second battery 203.

[0067] Thus, in the embodiment of the present application, the second power supply module 120 can be implemented based on the first battery 101 and the second transformer unit 121 .

[0068] To more clearly illustrate the implementation of this application, please refer to the following example:

[0069] When the power supply on the low-voltage load 202 and the second battery 203 side is insufficient, the 48V voltage output by the first transformer unit 111 can be converted into a 12V voltage by the transformer module 130 and provided to the low-voltage load 202 and the second battery 203. Then, the "12V voltage output by the transformer module 130" and the "12V voltage output by the second transformer unit 121" are combined to supply power to the low-voltage load 202 and the second battery 203 side, thereby meeting the power supply demand on the low-voltage load 202 and the second battery 203 side.

[0070] Furthermore, when the power supply on the vehicle heat dissipation component 201 side is insufficient, the 12V voltage output by the second transformer unit 121 can be converted into a 48V voltage by the transformer module 130 and provided to the vehicle heat dissipation component 201. Then, the "48V voltage output by the transformer module 130" and the "48V voltage output by the first transformer unit 111" are combined to supply power to the vehicle heat dissipation component 201 side, thereby meeting the power supply demand on this side of the vehicle heat dissipation component 201.

[0071] In one example, Figure 3 The first battery 101 is a vehicle power battery.

[0072] In one example, Figure 3 The vehicle heat dissipation components 201 include fans, water pumps, etc.

[0073] In one example, Figure 3 The second battery 203 is a vehicle low-voltage battery.

[0074] In one example, Figure 3 The low-voltage load 202 includes the vehicle controller, domain controller, multimedia system, etc.

[0075] In one example, the first transformer unit 111 can transform the voltage provided by the first battery into an output voltage of 48V, and the power of the first transformer unit 111 is 2.5 kW (kilowatts).

[0076] In an example, the second transformation unit 121 can transform the voltage provided by the first battery 101 into an output voltage of 12V, and the power of the second transformation unit 121 is 3kW.

[0077] In one example, the transformer module 130 has the capability of converting a 12V voltage into a 48V voltage, and has the capability of converting a 48V voltage into a 12V voltage, and the power of the transformer module 130 is 0.5 kW.

[0078] In one example, the first transformer unit 111 is at least one of a unidirectional DCDC, LLCC, a bidirectional LLC resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard-switching circuit.

[0079] In one example, the second transformer unit 121 is at least one of a unidirectional DCDC, LLCC, a bidirectional LLC resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard-switching circuit.

[0080] In one example, the voltage transformation module 130 is at least one of a bidirectional DCDC circuit and a buck-boost circuit.

[0081] In one example, the first target voltage is 48V and the second target voltage is 12V.

[0082] Further, it can be understood that in the related art, the input voltage of the low-voltage electrical appliances in the vehicle (including low-voltage loads 202 such as water pumps, fans, and vehicle controllers) is usually 12V, and in the embodiment of the present application, the input voltage of the low-voltage electrical appliances in the vehicle can be a larger first target voltage or a smaller second target voltage. In one example, the input voltage of the low-voltage electrical appliances in the vehicle can be 48V or 12V.

[0083] Furthermore, it can be understood that in the related art, the power supply voltage of heat dissipation components such as fans and water pumps is usually 12V, while in the implementation mode of the present application, the power supply voltage of heat dissipation components such as fans and water pumps is 48V. In other words, the vehicle can be equipped with "heat dissipation components such as water pumps and fans that can receive an input voltage of 48V" (hereinafter referred to as 48V water pumps, 48V fans and other heat dissipation components).

[0084] It is understandable that compared to cooling components such as fans and water pumps that operate at an input voltage of 12V, at the same power, cooling components such as 48V water pumps and 48V fans have high cooling power, use thin wire diameters, use small currents, have low costs, and are easy to operate.

[0085] Please refer again Figure 3In some embodiments of the present application, the transformation module 130 is configured to transform the second target voltage to output the first target voltage when the first transformation unit 111 operates abnormally.

[0086] The controller of the embodiment of the present application is further configured to control the transformation module to transform the second target voltage to output the first target voltage when the first transformation unit 111 operates abnormally.

[0087] Specifically, in the embodiment of the present application, when the first transformer unit 111 is damaged and thus cannot normally provide a 48V input voltage to the vehicle heat dissipation components 201 such as fans or water pumps, the transformer module 130 can invert the 12V voltage output by the second transformer unit 121 into 48V and output it to the vehicle heat dissipation components 201, thereby ensuring the stable operation of the vehicle heat dissipation components 201.

[0088] Thus, in the embodiment of the present application, when the first transformation unit 111 operates abnormally, the second target voltage may be transformed to determine the first target voltage.

[0089] In certain embodiments of the present application, the system also includes a second battery; the second power supply module and the transformer module are both electrically connected to the second battery; the second power supply module is configured to output a second target voltage to the second battery so that the second battery can be charged according to the received second target voltage and can output the second target voltage.

[0090] Specifically, in an embodiment of the present application, the power supply system 100 also includes a second battery 203 electrically connected to the second power supply module 120 (or the second transformer voltage 121), and the second battery 203 can receive the second target voltage provided by the second power supply module 120 (or the second transformer voltage 121) for charging, and the second battery 203 can also provide the second target voltage to the outside world (such as the transformer module 130).

[0091] Thus, in the embodiment of the present application, the second power supply module can output the second target voltage to the second battery, so that the second battery can be charged according to the received second target voltage and can output the second target voltage.

[0092] See also Figure 3 In certain embodiments of the present application, the voltage transformation module is connected to the second battery, and the voltage transformation module is further configured to transform the second target voltage output by the second battery to output the first target voltage.

[0093] The controller of the embodiment of the present application is further configured to control the voltage transformation module to transform the second target voltage output by the second battery to output the first target voltage.

[0094] Specifically, in the embodiment of the present application, the transformer module 130 can not only invert the 12V voltage output by the second power supply module 120 (or the second transformer unit 121) into 48V to provide to the vehicle heat dissipation component 201, but also receive the 12V voltage output by the second battery 203 and invert it into 48V.

[0095] Thus, in the embodiment of the present application, the voltage transformation module 130 can receive the second target voltage output by the second battery 203 , and convert the second target voltage provided by the second battery 203 into the first target voltage for output.

[0096] It can be understood that in the embodiment of the present application, the transformer module 130 can receive the second target voltage output by the second battery 203 when the second power supply module 120 (or the second transformer unit 121) fails to work normally, and convert the second target voltage provided by the second battery 203 into a first target voltage for output.

[0097] Furthermore, when the first power supply module 110 cannot normally output the first target voltage or the output voltage is insufficient, the transformer module 130 can receive the second target voltage output by the second power supply module 120 (or the second transformer unit 121) or the second battery 203, and convert the second target voltage into the first target voltage for output.

[0098] That is, in addition to inverting the 12V voltage output by the second voltage conversion unit 121 into 48V to provide to the vehicle heat dissipation component 201, the voltage conversion module 130 can also receive the 12V voltage output by the second battery and invert it into 48V to provide to the vehicle heat dissipation component 201. Therefore, if the second voltage conversion unit 121 is not in the working state, the voltage conversion module 130 can receive the 12V voltage output by the second battery 203 and invert it into 48V to provide to the vehicle heat dissipation component 201, thereby maintaining the operation of the vehicle heat dissipation component 201.

[0099] Please refer again Figure 3 In certain embodiments of the present application, the voltage transformation module 130 is configured to transform the first target voltage to output a second target voltage when the second voltage transformation unit 121 operates abnormally.

[0100] The controller of the embodiment of the present application is further configured to control the voltage transformation module to transform the first target voltage to output a second target voltage when the second voltage transformation unit 121 operates abnormally.

[0101] Specifically, in an embodiment of the present application, when the second transformer unit 121 is damaged and thus cannot normally provide a 12V voltage to the low-voltage load 202 and the second battery 203, the transformer module 130 can reduce the 48V voltage output by the first transformer unit 111 to 12V, and output it to the low-voltage load 202 and the second battery 203, thereby ensuring the stable operation of the low-voltage load 202 and the second battery 203.

[0102] Thus, in the embodiment of the present application, when the second transformation unit 121 operates abnormally, the first target voltage can be transformed to output the second target voltage.

[0103] In certain embodiments of the present application, the system includes a first circuit protection unit 102, the first transformer unit 111 includes a first secondary loop, and the first secondary loop, the first circuit protection unit 102 and the transformer module 130 are electrically connected in sequence; the transformer module 130 is configured to, when the first secondary loop is short-circuited to the ground, transform the second target voltage to output the first target voltage to the first circuit protection unit 102, and the first circuit protection unit 102 is configured to enter a preset working state when receiving the first target voltage so as to disconnect the connection between the first secondary loop and the transformer module 130.

[0104] The controller of the embodiment of the present application is also configured to control the transformer module to transform the second target voltage to output the first target voltage to the first circuit protection unit 102 when the first secondary loop is short-circuited to the ground. The first circuit protection unit 102 is configured to enter a preset working state when receiving the first target voltage to disconnect the connection between the first secondary loop and the transformer module 130.

[0105] To more clearly illustrate the implementation method of this application, please refer to Figure 3 , that is, Figure 3 As shown, a first fuse (ie, the first circuit protection unit 102 ) is provided between the first secondary loop of the first transformation unit 111 and the transformation module 130 .

[0106] Furthermore, when the first secondary circuit of the first transformer unit 111 is short-circuited to the ground, the transformer module 130 can invert the 12V voltage output by the second transformer unit 121 to 48V, and transmit the 48V voltage to the first fuse to blow the first fuse (i.e., the preset working state), thereby disconnecting the first secondary circuit from the transformer module 130 and the heat dissipation components, thereby avoiding damage to the transformer module 130 and the heat dissipation components.

[0107] Thus, in the embodiment of the present application, when the first secondary circuit is short-circuited to the ground, the second target voltage can be transformed to determine the first target voltage, and the first target voltage can be output to the first circuit protection unit to make the first secondary circuit enter a preset working state, thereby disconnecting the connection between the first secondary circuit and the transformer module 130, thereby ensuring the safe operation of the power supply system and the vehicle load.

[0108] In addition, it can be understood that the transformer module 130 can invert the 12V voltage output by the second transformer unit 121 into 48V to provide the vehicle heat dissipation component 201, and can also receive the 12V voltage output by the second battery 203 and invert it into 48V.

[0109] Thus, the voltage transformation module 130 can not only invert the 12V voltage outputted by the second voltage transformation unit 121 into 48V to output to the first fuse, but also receive the 12V voltage outputted by the second battery 203 and invert it into 48V to output to the first fuse. Therefore, if the second voltage transformation unit 121 is not in a normal working state, the voltage transformation module 130 can receive the 12V voltage outputted by the second battery 203 and invert it into 48V to output to the first fuse, thereby causing the first fuse to blow.

[0110] Please refer again Figure 3 In certain embodiments of the present application, the system includes a second circuit protection unit 103, the second transformer unit 121 includes a second secondary loop, the second secondary loop is electrically connected to the transformer module 130 through the second circuit protection unit 103, the transformer module 130 is configured to transform the first target voltage when the second secondary loop is short-circuited to the ground, determine the second target voltage, and output the second target voltage to the second circuit protection unit 103, and the second circuit protection unit 103 is configured to enter a preset working state when receiving the second target voltage so as to disconnect the second secondary loop from the transformer module 130.

[0111] The controller of the embodiment of the present application is also configured to transform the first target voltage when the second secondary loop is short-circuited to the ground, determine the second target voltage, and output the second target voltage to the second circuit protection unit 103. The second circuit protection unit 103 is configured to enter a preset working state when receiving the second target voltage to disconnect the connection between the second secondary loop and the transformation module 130.

[0112] Specifically, in the embodiment of the present application, a second fuse (ie, the second circuit protection unit 103 ) is provided between the first secondary loop of the second transformation unit 121 and the transformation module 130 .

[0113] Furthermore, when the second secondary circuit of the second transformer unit 121 is short-circuited to the ground, the transformer module 130 can step down the 48V voltage output by the first transformer unit 111 to 12V and provide it to the second fuse, so that the second fuse burns out (i.e., the preset working state), thereby disconnecting the second secondary circuit from the transformer module 130 and the heat dissipation components, thereby avoiding damage to the transformer module 130, the low-voltage load 202 and the second battery 203.

[0114] Thus, in the embodiment of the present application, when the second secondary circuit is short-circuited to the ground, the first target voltage can be transformed to determine the second target voltage, and the second target voltage can be output to the second circuit protection unit so that the second circuit protection unit 103 enters a preset working state, thereby disconnecting the connection between the second secondary circuit and the transformation module 130, thereby ensuring the safe operation of the power supply system and the vehicle load.

[0115] An embodiment of the present application also provides a vehicle, including the above-mentioned power supply system, or including the above-mentioned controller.

[0116] In the description of this specification, the descriptions with reference to the terms "specifically", "further", "particularly", "understandably", etc. are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not intended to refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0117] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0118] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A power supply system for a vehicle, characterized in that: The system comprises a first power supply module, a second power supply module and a transformer module, wherein the first power supply module and the second power supply module are both electrically connected to the transformer module; The first power supply module is configured to output a first target voltage; The second power supply module is configured to output a second target voltage; The voltage transformation module is configured to transform the first target voltage to output the second target voltage.

2. The system according to claim 1, characterized in that The voltage transformation module is further configured to transform the second target voltage to output the first target voltage.

3. The system according to claim 1, characterized in that The first power supply module includes: a first battery, and a first transformer unit electrically connected to the first battery; The first transformer unit is electrically connected to the transformer module; The first voltage transformation unit is configured to transform the output voltage of the first battery to output a first target voltage.

4. The system according to claim 1, characterized in that The second power supply module includes: a first battery, and a second voltage transformation unit electrically connected to the first battery; The second transformer unit is electrically connected to the transformer module; The second voltage transformation unit is configured to transform the output voltage to output a second target voltage.

5. The system according to claim 3, characterized in that The voltage transformation module is configured to transform the second target voltage to output the first target voltage when the first voltage transformation unit operates abnormally.

6. The system according to claim 2, characterized in that The system further includes: a second battery; The second power supply module and the voltage transformation module are both electrically connected to the second battery; The second power supply module is configured to output a second target voltage to the second battery, so that the second battery can be charged according to the received second target voltage and can output the second target voltage.

7. The system according to claim 6, characterized in that The voltage transformation module is connected to the second battery, and the voltage transformation module is further configured to transform the second target voltage output by the second battery to output the first target voltage.

8. The system according to claim 4, characterized in that The voltage transformation module is configured to transform the first target voltage to output the second target voltage when the second voltage transformation unit operates abnormally.

9. The system according to claim 3, characterized in that The system comprises a first circuit protection unit, the first transformer unit comprises a first secondary loop, the first secondary loop, the first circuit protection unit and the transformer module are electrically connected in sequence; The voltage transformation module is configured to, when the first secondary loop is short-circuited to ground, transform the second target voltage to output the first target voltage to the first circuit protection unit; The first circuit protection unit is configured to enter a preset working state upon receiving the first target voltage, so as to disconnect the first secondary loop from the voltage transformation module.

10. The system according to claim 4, characterized in that The system includes a second circuit protection unit, the second transformer unit includes a second secondary loop, and the second secondary loop is electrically connected to the transformer module through the second circuit protection unit; The voltage transformation module is configured to transform the first target voltage when the second secondary loop is short-circuited to ground, determine the second target voltage, and output the second target voltage to the second circuit protection unit; The second circuit protection unit is configured to enter a preset working state upon receiving the second target voltage, so as to disconnect the second secondary loop from the transformer module.

11. The system according to claim 3, characterized in that The first voltage transformation unit includes at least one of a unidirectional DC-DC conversion circuit, a resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard switching circuit.

12. The system according to claim 4, characterized in that The second voltage transformation unit includes at least one of a unidirectional DC-DC conversion circuit, a resonant converter circuit, a phase-shifted full-bridge circuit, and a full-bridge hard switching circuit.

13. The system according to any one of claims 1 to 12, characterized in that: The voltage conversion module includes a bidirectional DC-DC conversion circuit and / or a step-up-down circuit.

14. A controller, characterized in that: Applied to the system according to any one of claims 1 to 13, the controller is connected to the voltage transformation module, and the controller is configured to control the voltage transformation module to transform the first target voltage to output the second target voltage.

15. A vehicle, characterized in that: A system comprising any one of claims 1 to 13, or a controller comprising claim 14.

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