Automobile power supply system and automobile

Abstract

An automobile power supply system and an automobile. The system comprises: a battery (110) at a preset voltage, which is configured to supply power to a target electric device by means of a direct-current / direct-current converter; the direct-current / direct-current converter (120), which is configured to convert a voltage that is output from the battery at the preset voltage, so as to obtain a converted voltage, and transmit the converted voltage to the target electric device; and the target electric device (130), which is configured to receive the converted voltage transmitted by the direct-current / direct-current converter and operates, wherein the voltage of the battery at the preset voltage is above 12 V.

Description

Automobile power supply system and automobile

[0001] The present application claims priority to the Chinese patent application No. 202411085566.9, filed on August 08, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of automobile electronics, for example to an automobile power supply system and an automobile. BACKGROUND

[0003] With the increase in the number of vehicle-mounted electronic devices, the power demand of the automobile is rising, and the 12V system begins to be insufficient. At present, the power capacity of the whole vehicle 12V system is small, in order to meet the power demand of the high-power consumption electrical equipment, only thicker and heavier cables and connectors can be used, which is heavy in weight, high in cost, and also makes the internal space of the vehicle more crowded. SUMMARY

[0004] Embodiments of the present application provide an automobile power supply system and an automobile, which can be powered by a battery with a voltage higher than 12 volts, reduce the loss of voltage in the transmission process, make the automobile adopt light-weight and thin-shaped cables and connectors, reduce the power supply cost, and improve the power supply efficiency.

[0005] In a first aspect, embodiments of the present application provide an automobile power supply system, which comprises:

[0006] a battery with a preset voltage, a direct current / direct current converter, and a target electrical equipment;

[0007] The battery with a preset voltage is configured to supply power to the target electrical equipment through the direct current / direct current converter.

[0008] The direct current / direct current converter is configured to convert the voltage output by the battery with a preset voltage to obtain a converted voltage, and deliver the converted voltage to the target electrical equipment.

[0009] The target electrical equipment is configured to receive the converted voltage delivered by the direct current / direct current converter to operate.

[0010] The voltage of the battery with a preset voltage is higher than 12 volts.

[0011] In a second aspect, embodiments of the present application provide an automobile, which is configured with the automobile power supply system provided in any embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0012] FIG. 1 is a structural schematic diagram of an automobile power supply system provided in an embodiment of the present application;

[0013] Fig. 2 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application;

[0014] Fig. 3 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application;

[0015] Fig. 4 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application;

[0016] Fig. 5 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application;

[0017] Fig. 6 is a schematic diagram of an automobile according to an embodiment of the present application;

[0018] Fig. 7 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] The present application will be described in detail below with reference to the accompanying drawings and embodiments, which are merely used to explain the present application. For the purpose of description, some of the structures related to the present application are shown in the drawings instead of all the structures.

[0020] Fig. 1 is a schematic diagram of a power supply system of an automobile according to an embodiment of the present application. The present embodiment can be applied to the case of supplying power to an automobile, especially to the case of supplying power to an automobile having different voltage electrical equipment. The positioning system of the present embodiment can include the following structures:

[0021] a battery 110 with a preset voltage, a DC / DC converter 120, and a target electrical equipment 130;

[0022] The battery 110 with a preset voltage is configured to supply power to the target electrical equipment 130 through the DC / DC converter 120. The DC / DC converter 120 is configured to convert the voltage output by the battery 110 with a preset voltage to obtain a converted voltage, and deliver the converted voltage to the target electrical equipment 130. The target electrical equipment 130 is configured to receive the converted voltage delivered by the DC / DC converter 120 to operate. The voltage of the battery 110 with a preset voltage is higher than 12 volts.

[0023] In addition to the traditional start, light, radio, etc., the current automobile has new functions such as advanced driving assistance system (ADAS), which increases the demand for power. As a result, the addition of various information entertainment, connection systems, navigation systems, and driving assistance systems has greatly increased the power consumption of the automobile. Among these electrical equipment, the camera, radar, sensor, and controller, as well as the electronic system carried by the above-mentioned equipment, all require more power than the 12V system can provide.

[0024] Therefore, in the embodiment, the target electrical equipment is powered by the battery with preset voltage higher than 12 volts, ensuring sufficient and stable power supply.

[0025] The battery 110 with preset voltage can be a battery with both charging and discharging functions. The working voltage of the target electrical equipment 130 is lower than the preset voltage of the battery with preset voltage. Since the voltage of the target electrical equipment 120 and the voltage of the battery with preset voltage can be different, a DC / DC converter 120 is used for voltage conversion, for example, a unidirectional DC / DC converter for converting high voltage to low voltage, and then the converted voltage is delivered to the target electrical equipment.

[0026] The DC / DC converter can be a unidirectional DC / DC converter for converting high voltage to low voltage. The unidirectional DC / DC converter converts the higher voltage of the battery with preset voltage 110 to a lower voltage that can be used by the target electrical equipment.

[0027] In the embodiment, the battery with preset voltage is configured to supply power to the target electrical equipment through the DC / DC converter; the DC / DC converter is configured to convert the voltage output by the battery with preset voltage to obtain a converted voltage, and deliver the converted voltage to the target electrical equipment; the target electrical equipment is configured to receive the converted voltage delivered by the DC / DC converter for operation; wherein the voltage of the battery with preset voltage is higher than 12 volts. The embodiment solves the problem of cost increase caused by the fact that the current 12-volt battery power supply system cannot meet the power demand of high-power electrical equipment, and can supply power by using a battery with voltage higher than 12 volts, reduce the loss of voltage during delivery, and make the automobile use a cable and connector with light weight and thin shape, thereby reducing the power supply cost and improving the power supply efficiency.

[0028] FIG. 2 is a structural schematic diagram of an automobile power supply system according to an embodiment of the present application.

[0029] As shown in FIG. 2, the automobile power supply system according to the embodiment can include the following structures:

[0030] The battery with preset voltage 210, the DC / DC converter 220 for converting the voltage from preset voltage to 12 volts, and the target 12-volt electrical equipment 230.

[0031] The preset voltage battery 210 is configured to supply power to the target 12-volt electrical equipment 230 through the preset voltage to 12-volt DC / DC converter 220. The preset voltage to 12-volt DC / DC converter 220 is configured to convert the voltage output by the preset voltage battery 210 to a 12-volt converted voltage and deliver the 12-volt converted voltage to the target 12-volt electrical equipment 230. The target 12-volt electrical equipment 230 is configured to operate by receiving the converted voltage delivered by the preset voltage to 12-volt DC / DC converter 220. The voltage of the preset voltage battery 110 is higher than 12 volts, such as 24 volts or 36 volts.

[0032] In some embodiments, the target 12-volt electrical equipment 230 includes at least one of an ignition device, a radio device, a light device, a rearview mirror control device, and a door lock device.

[0033] In this embodiment, instead of using a 12-volt battery to supply power to the 12-volt electrical equipment, a preset voltage battery with a higher voltage is used to supply power to the target 12-volt electrical equipment 230, ensuring efficient and reliable operation of the ignition device, the radio device, the light device, the rearview mirror control device, and the door lock device.

[0034] The preset voltage to 12-volt DC / DC converter can be a unidirectional high-to-low voltage DC / DC converter that unidirectionally converts the higher voltage of the preset voltage battery 210 to a 12-volt voltage that can be used by the target 12-volt electrical equipment.

[0035] As shown in FIG. 3, in some embodiments, the automobile power supply system can further include a preset voltage to 5-volt DC / DC converter 240 configured to convert the voltage output by the preset voltage battery to a 5-volt voltage and deliver the 5-volt voltage to the target 5-volt electrical equipment 250.

[0036] In some embodiments, the target 5-volt electrical equipment 250 includes at least an automobile chip.

[0037] In this embodiment, the preset voltage to 5-volt DC / DC converter enables the use of a preset voltage battery to supply power to the target 5-volt electrical equipment 250, such as an automobile chip, which has a low voltage.

[0038] The preset voltage to 5-volt DC / DC converter can also be a unidirectional high-to-low voltage DC / DC converter that unidirectionally converts the higher voltage of the preset voltage battery 210 to a 5-volt voltage that can be used by the target 5-volt electrical equipment, ensuring efficient and reliable operation of the automobile chip.

[0039] In the embodiment, the battery of the preset voltage is configured to supply power to the target power device through the DC / DC converter; the DC / DC converter is configured to convert the voltage output by the battery of the preset voltage to obtain a converted voltage, and deliver the converted voltage to the target power device; the target power device is configured to receive the converted voltage delivered by the DC / DC converter to operate; wherein the voltage of the battery of the preset voltage is higher than 12 volts; the DC / DC converter comprises: a preset voltage to 12-volt DC / DC converter configured to convert the voltage output by the battery of the preset voltage to obtain a 12-volt voltage, and deliver the 12-volt voltage to the target 12-volt power device; the target 12-volt power device at least includes one or more of an ignition device, a radio device, a light device, a rearview mirror control device, and a door lock device. The DC / DC converter comprises: a preset voltage to 5-volt DC / DC converter configured to convert the voltage output by the battery of the preset voltage to obtain a 5-volt voltage, and deliver the 5-volt voltage to the target 5-volt power device; the target 5-volt power device at least includes a car chip. The embodiment of the application solves the problem of cost increase caused by the fact that the current 12-volt battery power supply system cannot meet the power demand of high-power power devices, and can supply power to 12-volt and 5-volt power devices by using a battery with a voltage higher than 12 volts, compatible with power devices of the 12-volt battery power supply system, reducing the loss of voltage during delivery, allowing the car to use light-weight and thin-shaped cables and connectors, reducing power supply costs and improving power supply efficiency.

[0040] FIG. 4 is a structural schematic diagram of an automobile power supply system provided by an embodiment of the application.

[0041] As shown in the figure, the automobile power supply system of the embodiment can include the following structures:

[0042] The battery of the preset voltage 310, the DC / DC converter 320, the target power device 330, and the target preset voltage power device 340.

[0043] For example, the working voltage of the target power device 330 is lower than the preset voltage of the battery of the preset voltage, so the higher voltage output by the battery of the preset voltage needs to be converted to the voltage of the target power device 330 by the DC / DC converter 320 before being delivered to the target power device 330, so that the target power device 330 can work at its working voltage.

[0044] The working voltage of the target preset voltage power device is the same as the voltage output by the battery of the preset voltage, and the battery of the preset voltage is used to directly deliver voltage to the target preset voltage power device to supply power to the target preset voltage power device.

[0045] The target preset-voltage electrical device can be a high-power device on the car, such as an air conditioner, a water pump, a cooling fan, a wireless charging device, etc. By using a battery with a preset voltage higher than 12 volts to power the target preset-voltage electrical device such as an air conditioner, a water pump, a cooling fan, etc., the speed of refrigeration or heating can be improved, and the effect of refrigeration or heating can be optimized.

[0046] As shown in FIG. 7, in some embodiments, the car power supply system further comprises:

[0047] The battery controller 350 is configured to adjust the output charging voltage of the battery charger corresponding to the preset-voltage battery 330 according to the charging state of the preset-voltage battery 330.

[0048] In some embodiments, the current generated by the alternator of the car is converted into direct current by an AC / DC converter to charge the preset-voltage battery 330. The preset-voltage battery 330 can be charged and discharged to effectively store and release energy to support the operation of various target electrical devices on the car. The battery controller 350 is responsible for accurately adjusting the charging state of the preset-voltage battery 330 to ensure the optimal balance between performance and lifespan of the preset-voltage battery 330, so that the preset-voltage battery 330 has good performance and a long lifespan. For example, during the charging process of the preset-voltage battery 330, the battery controller 350 accurately controls the charging current and voltage according to the state of the preset-voltage battery 330 and the characteristics of the corresponding charger to achieve safe and efficient charging, prevent overcharging, and avoid damage to the battery and potential safety risks.

[0049] In some embodiments, the car power supply system further comprises:

[0050] The power distribution box 360 is configured to distribute voltage according to the control instructions of the car control system.

[0051] The power distribution box 360 can have a fuse built-in, which melts when the current is overloaded to protect the circuit and devices from excessive current. The power distribution box 360 can also have a relay built-in, which is configured to control the on-off of large current and control the opening and closing of large current by small current.

[0052] The power distribution box 360 can also distribute electrical energy to corresponding circuits through different specifications of wires and connectors according to the power requirements and working characteristics of the target electrical devices and the target preset-voltage electrical devices. For example, lighting circuits, audio system circuits, and air conditioning system circuits, etc.

[0053] The power distribution box 360 can ensure that electrical power is safely and efficiently distributed to each target electrical device and target preset-voltage electrical device.

[0054] In some embodiments, the preset-voltage battery is a 48-volt battery.

[0055] The introduction of 48V battery can bring significant advantages to the electrification of vehicles. The power capacity will be four times that of the traditional 12V system, which is due to the simple power equation P = UI. The 48V system can support heavier loads, such as air conditioning, and power the vehicle's power motor, such as the hybrid motor, to achieve faster and smoother acceleration and improve fuel efficiency. The power provided by the 48V battery can also be used to enhance the vehicle's steering, braking and suspension systems, and support new safety, entertainment and comfort features or systems. Compared with the 12V system, the 48V system has lower current at a given power level, so the loss PLOSS = I 2 R will also be significantly reduced. At the same power transmission, the 48V system can use thinner and lighter cables and connectors, thereby reducing weight and cost, and bringing significant performance improvement and efficiency improvement to the vehicle. In this embodiment, the use of 48V battery enables the vehicle to operate high-power electronic devices more efficiently, reduces energy loss, and is also compatible with the loads supported by the original 12V scheme, which helps to improve the performance of the vehicle and provides the possibility of more environmentally friendly, more economical and more intelligent driving experience.

[0056] The 48V battery supported automotive power supply system can provide more powerful power when the vehicle is running, for example, when the electric vehicle or hybrid vehicle is running, it can provide more powerful power. When the driver steps on the accelerator pedal, the 48V battery outputs electric energy to drive the motor, thereby generating power to accelerate the vehicle, which can achieve faster and smoother acceleration than the traditional 12V system, while significantly saving fuel and reducing driving costs.

[0057] This embodiment uses 48V battery to power various electrical devices in the vehicle, which helps to reduce fuel consumption and emissions, support renewable energy systems and electric vehicle propulsion systems.

[0058] In the embodiment, the battery with preset voltage is configured to supply power to the target power device through the DC / DC converter; the DC / DC converter is configured to convert the voltage output by the battery with preset voltage to obtain a converted voltage, and deliver the converted voltage to the target power device; the target power device is configured to receive the converted voltage delivered by the DC / DC converter to operate; wherein the voltage of the battery with preset voltage is higher than 12 volts; the battery with preset voltage is further configured to directly deliver voltage to the target preset voltage power device to supply power to the target preset voltage power device; the battery controller is configured to adjust the output charging voltage of the battery charger corresponding to the battery with preset voltage according to the charging state of the battery with preset voltage; the power distribution box is configured to distribute voltage according to the control instruction of the automobile control system; and the battery with preset voltage is a 48-volt battery. The embodiment of the application solves the problem of cost increase caused by the fact that the current 12-volt battery power supply system cannot meet the power demand of high-power power devices, can supply power to the target power device and the target preset voltage power device by using a battery with voltage higher than 12 volts (such as a 48-volt battery), can meet the power demand of power devices with different operating voltages, reduces the loss of voltage in the delivery process, enables the automobile to use cables and connectors that are light in weight and thin in shape, reduces the power supply cost, and improves the power supply efficiency.

[0059] In a preferred automobile power supply system provided in the embodiment, the structural diagram of the automobile power supply system can refer to the structural diagram shown in FIG. 5. In FIG. 5, the automobile power supply system includes:

[0060] 48-volt battery, 48-volt-to-12-volt DC / DC converter, 48-volt-to-5-volt DC / DC converter, 48-volt power device, 12-volt power device, and 5-volt power device.

[0061] The 48-volt power device is, for example, an air conditioner, a water pump, a fan, a wireless charging device, or the like. The 12-volt power device is, for example, a light and a radio, or the like. The 5-volt power device is, for example, a car chip, such as a functional chip, a sensor chip, a storage chip, or the like.

[0062] When the automobile is powered on, the 48-volt battery is discharged and delivered to the 48-volt power device, the 48-volt-to-12-volt DC / DC converter, and the 48-volt-to-5-volt DC / DC converter. The 48-volt power device directly operates at 48-volt voltage, while the 12-volt power device and the 5-volt power device operate at the operating voltage converted by the corresponding converter.

[0063] FIG. 6 is a structural schematic diagram of an automobile provided in an embodiment of the application.

[0064] As shown in FIG. 6, the above automobile is configured with an automobile power supply system as provided in any embodiment of the application.

[0065] Exemplarily, the above automobile power supply system comprises a preset-voltage battery 410, a DC / DC converter 420 and a target power-consuming device 430.

[0066] The preset-voltage battery 410 is configured to supply power to the target power-consuming device through the DC / DC converter; the DC / DC converter 420 is configured to convert the voltage output by the preset-voltage battery to obtain a converted voltage and deliver the converted voltage to the target power-consuming device; the target power-consuming device 430 is configured to receive the converted voltage delivered by the DC / DC converter to operate; and the voltage of the preset-voltage battery is higher than 12 volts.

[0067] In some embodiments, the above DC / DC converter 420 comprises:

[0068] The preset-voltage-to-12-volt DC / DC converter is configured to convert the voltage output by the preset-voltage battery to obtain a 12-volt voltage and deliver the 12-volt voltage to the target 12-volt power-consuming device.

[0069] In some embodiments, the target 12-volt power-consuming device at least comprises one or more of an ignition device, a radio device, a lighting device, a rearview mirror control device and a door lock device.

[0070] In some embodiments, the above DC / DC converter 420 further comprises:

[0071] The preset-voltage-to-5-volt DC / DC converter is configured to convert the voltage output by the preset-voltage battery to obtain a 5-volt voltage and deliver the 5-volt voltage to the target 5-volt power-consuming device.

[0072] In some embodiments, the target 5-volt power-consuming device at least comprises an automobile chip.

[0073] In some embodiments, the preset-voltage battery 410 is further configured to directly deliver voltage to a target preset-voltage power-consuming device to supply power to the target preset-voltage power-consuming device.

[0074] In some embodiments, the above automobile power supply system further comprises:

[0075] The battery controller is configured to adjust the output charging voltage of the battery charger corresponding to the preset-voltage battery according to the charging state of the preset-voltage battery.

[0076] In some embodiments, the above automobile power supply system further comprises:

[0077] The power distribution box is configured to distribute voltage according to the control instruction of the automobile control system.

[0078] In some embodiments, the preset voltage battery is a 48-volt battery.

[0079] In the embodiment, the preset voltage battery is configured to supply power to the target electrical equipment through a DC / DC converter; the DC / DC converter is configured to convert the voltage output by the preset voltage battery to obtain a converted voltage, and deliver the converted voltage to the target electrical equipment; the target electrical equipment is configured to receive the converted voltage delivered by the DC / DC converter to operate; wherein the voltage of the preset voltage battery is higher than 12 volts. The embodiment solves the problem of cost increase caused by the fact that the current 12-volt battery power supply system cannot meet the power demand of high-power electrical equipment, and can supply power through a battery with a voltage higher than 12 volts, reduce the loss of voltage in the delivery process, enable the automobile to use a cable and connector that are light in weight and thin in shape, reduce the power supply cost, and improve the power supply efficiency.

Claims

1. An automobile power supply system, comprising: a preset voltage battery, a DC / DC converter and a target electrical device; wherein the preset voltage battery is configured to supply power to the target electrical device through the DC / DC converter; the DC / DC converter is configured to convert the voltage output by the preset voltage battery to obtain a converted voltage, and deliver the converted voltage to the target electrical device; the target electrical device is configured to receive the converted voltage delivered by the DC / DC converter to operate; wherein the voltage of the preset voltage battery is higher than 12 volts.

2. The system of claim 1, wherein, the DC / DC converter comprises: a preset voltage to 12-volt DC / DC converter configured to convert the voltage output by the preset voltage battery to obtain a 12-volt voltage, and deliver the 12-volt voltage to a target 12-volt electrical device.

3. The system of claim 2, wherein, the target 12-volt electrical device comprises at least one or more of an ignition device, a radio device, a lighting device, a rearview mirror control device and a door lock device.

4. The system of claim 1, wherein, the DC / DC converter comprises: a preset voltage to 5-volt DC / DC converter configured to convert the voltage output by the preset voltage battery to obtain a 5-volt voltage, and deliver the 5-volt voltage to a target 5-volt electrical device.

5. The system of claim 4, wherein, the target 5-volt electrical device comprises at least an automobile chip.

6. The system of claim 1, wherein, the preset voltage battery is further configured to directly deliver voltage to a target preset voltage electrical device to supply power to the target preset voltage electrical device.

7. The system of claim 1, further comprising: a battery controller configured to adjust the output charging voltage of a battery charger corresponding to the preset voltage battery according to the charging state of the preset voltage battery.

8. The system of claim 1, further comprising: a power distribution box configured to distribute voltage according to a control instruction of an automobile control system.

9. The system of any one of claims 1-8, wherein, the preset voltage battery is a 48-volt battery.

10. An automobile configured with the automobile power supply system of any one of claims 1-9.

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