Vehicle-mounted power supply, battery system of vehicle and vehicle

Abstract

The invention relates to a vehicle-mounted power source, a battery system of a vehicle and the vehicle, at least part of devices of the vehicle-mounted power source are detachably connected with the vehicle, the vehicle-mounted power source comprises a first battery, a second battery and a third battery, the first battery is a power battery of the vehicle, and the first battery is used for supplying power to a load outside the vehicle in a detached state; the first end of the voltage conversion device is connected with the first battery, the second end of the voltage conversion device is suitable for being connected with the load outside the vehicle, and in the vehicle-mounted power supply, the voltage conversion device is used for converting the voltage of the first battery and then outputting direct current to the load outside the vehicle.

Description

Technical Field

[0001] The present disclosure relates to electric vehicle technology, and more specifically, to an on-board power supply, a battery system of a vehicle, and a vehicle. Background Art

[0002] With the development of vehicle technology, more and more vehicles use power batteries as a power source.

[0003] The existing battery system of a vehicle is in an idle state and is not fully utilized when it is not supplying power to the vehicle's power load and / or non-power load. When the vehicle owner needs to use power outside the vehicle, the vehicle owner needs to find or equip another power supply. Summary of the invention

[0004] An object of the present invention is to provide a new technical solution for vehicle-mounted power supply.

[0005] According to a first aspect of the present invention, there is provided a vehicle-mounted power supply, at least part of which is detachably connected to the vehicle, comprising:

[0006] a first battery, the first battery being a power battery of the vehicle, and the first battery being used to supply power to an external load of the vehicle when in a disassembled state;

[0007] A voltage conversion device, wherein the first end of the voltage conversion device is connected to the first battery, and the second end of the voltage conversion device is suitable for connecting to the external load. In the vehicle power supply, the voltage conversion device is used to convert the voltage of the first battery and output direct current to the external load.

[0008] Optionally, the voltage conversion device includes a high-voltage DC / low-voltage DC of the vehicle and a low-voltage output assembly of the vehicle, and the high-voltage DC / low-voltage DC of the vehicle and the low-voltage output assembly of the vehicle are complete vehicle devices that can be removed from the vehicle.

[0009] Optionally, the high voltage DC / low voltage DC includes: a first primary side conversion circuit, a first isolation conversion circuit, and a first secondary side conversion circuit;

[0010] The low voltage output assembly includes a switch control circuit and a voltage conversion circuit;

[0011] The first end of the first primary conversion circuit is connected to the first battery assembly, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion is connected to the first end of the first secondary conversion circuit, the second end of the first secondary conversion circuit is connected to the first end of the switch control circuit, the second end of the switch control circuit is connected to the first end of the voltage conversion circuit, and the second end of the voltage conversion circuit is connected to the external vehicle load.

[0012] Optionally, the voltage conversion device includes an external vehicle voltage conversion device, and the external vehicle voltage conversion device includes high voltage DC / low voltage DC.

[0013] Optionally, the high voltage DC / low voltage DC includes: a first primary side conversion circuit, a first isolation conversion circuit, and a first secondary side conversion circuit;

[0014] The first end of the first primary conversion circuit is connected to the power battery assembly, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion circuit is connected to the first end of the first secondary conversion circuit, and the second end of the first secondary conversion circuit is connected to the external vehicle load.

[0015] Optionally, the vehicle-mounted power supply further includes a storage compartment, in which the first battery and the voltage conversion device are accommodated.

[0016] Optionally, the storage bin is provided with a locking mechanism, and the locking mechanism is used to be opened when the on-board power supply is electrically disconnected from the vehicle, so as to dismantle the on-board power supply.

[0017] Optionally, the storage bin is provided with a low-voltage output interface, and the second end of the voltage conversion device is connected to the low-voltage output interface to output direct current.

[0018] Optionally, the storage bin is further provided with an electrical connection interface, the first battery is connected to the electrical connection interface, and the first battery is suitable for being electrically connected to the vehicle through the electrical connection interface.

[0019] According to a second aspect of the present invention, there is provided a battery system for a vehicle, comprising:

[0020] The vehicle-mounted power supply as described in any one of the first aspects;

[0021] An AC / DC conversion device, wherein a first end of the AC / DC conversion device is connected to the first battery, and a second end of the AC / DC conversion device is connected to an AC power load of the vehicle.

[0022] Optionally, the battery system also includes: an AC-DC conversion device, a first end of the AC-DC conversion device is connected to the first battery, and a second end of the AC-DC conversion device is connected to an AC power load of the vehicle; the AC-DC conversion device includes: a high-voltage DC / DC, a high-voltage AC / DC and an AC output assembly connected in sequence.

[0023] Optionally, the high-voltage DC / DC includes a second secondary conversion circuit, a second isolation conversion circuit, and a second primary conversion circuit;

[0024] The high voltage AC / DC includes a power factor correction circuit;

[0025] The AC power output assembly includes a switch control circuit;

[0026] A first end of the second secondary conversion circuit is connected to the first battery, a second end of the second secondary conversion circuit is connected to a first end of the second isolation conversion circuit, a second end of the second isolation conversion circuit is connected to a first end of the second primary conversion circuit, a second end of the second primary conversion circuit is connected to a first end of the power factor correction circuit, and a second end of the power factor correction circuit is connected to the switch control circuit.

[0027] Optionally, also include:

[0028] The second battery is a non-power battery of the vehicle, and the first battery is connected to the second battery via a high voltage DC / low voltage DC.

[0029] According to a third aspect of the present invention, there is provided a vehicle, comprising: a battery system as described in any one of the second aspects.

[0030] The vehicle-mounted power supply provided by the present invention is that the power battery in the vehicle's battery system can be removed from the vehicle and constitute a mobile power supply with a voltage conversion device. The voltage conversion device can convert the voltage of the power battery and output direct current to power external loads of the vehicle, so that the battery system of the vehicle can be fully utilized when in an idle state, while meeting the owner's external direct current power consumption demand, thereby improving the owner's vehicle experience.

[0031] Features and advantages of the embodiments of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the embodiments of the specification.

[0033] Figure 1A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0034] Figure 2 A schematic diagram of a battery system is shown after the power battery is removed from the battery system of a vehicle.

[0035] Figure 3 A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0036] Figure 4 A schematic diagram of a battery system is shown after a power battery, a high voltage DC / low voltage DC, and a low voltage output assembly are removed from a battery system of a vehicle.

[0037] Figure 5 A circuit diagram of a high voltage DC / low voltage DC according to an embodiment of the present invention is shown.

[0038] Figure 6 A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0039] Figure 7 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0040] Figure 8 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0041] Fig. 9 A circuit diagram of high voltage DC / low voltage DC and high voltage AC / DC according to an embodiment of the present invention is shown.

[0042] Fig.10 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

[0044] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the embodiments of the present specification and its application or uses.

[0045] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] <In-vehicle power supply embodiment>

[0047] Example 1

[0048] One embodiment of the present invention provides a vehicle-mounted power supply. At least part of the vehicle-mounted power supply is detachably connected to the vehicle. Figure 1 As shown, the vehicle-mounted power supply of this embodiment includes a first battery and a voltage conversion device.

[0049] The first battery is a power battery of the vehicle and is used to supply power to external loads when the first battery is in a disassembled state. Figure 2 The schematic diagram of the battery system after the power battery is removed from the battery system of the vehicle is shown. The position of the dotted frame 1 is the position of the power battery in the battery system of the vehicle.

[0050] The first end of the voltage conversion device is connected to the first battery, and the second end of the voltage conversion device is suitable for connecting to an external load. In the vehicle power supply, the voltage conversion device is used to convert the voltage of the first battery and output direct current to the external load.

[0051] In one embodiment, the vehicle-mounted power supply further includes a storage compartment in which the first battery and the voltage conversion device are accommodated.

[0052] The storage bin is provided with a locking mechanism, which is used to be opened when the on-board power supply is electrically disconnected from the vehicle, so as to dismantle the on-board power supply.

[0053] The storage bin is provided with a low voltage output interface. The second end of the voltage conversion device is connected to the low voltage output interface to output direct current. The storage bin is also provided with an electrical connection interface, the first battery is connected to the electrical connection interface, and the first battery is suitable for being electrically connected to the vehicle through the electrical connection interface.

[0054] The vehicle-mounted power supply provided in this embodiment is that the power battery in the vehicle's battery system can be removed from the vehicle and constitute a mobile power supply with a voltage conversion device. The voltage conversion device can convert the voltage of the power battery and output direct current to power external loads, so that the vehicle's battery system can be fully utilized when in an idle state, while meeting the owner's external direct current power demand, thereby improving the owner's vehicle experience.

[0055] Example 2

[0056] In one embodiment, the first battery is a power battery of the vehicle. The voltage conversion device includes a high voltage DC / low voltage DC of the vehicle and a low voltage output assembly of the vehicle. Figure 3 .

[0057] Figure 4A schematic diagram of a battery system after the power battery, high voltage DC / low voltage DC and low voltage output assembly are removed from the battery system of a vehicle is shown. The location of the dotted line frame 1 is the location of the power battery in the battery system of the vehicle. The location of the dotted line frame 2 is the location of the high voltage DC / low voltage DC in the battery system of the vehicle. The location of the dotted line frame 3 is the location of the low voltage output assembly in the battery system of the vehicle.

[0058] In the vehicle power supply, the first end of the high-voltage DC / low-voltage DC is connected to the power battery, the second end of the high-voltage DC / low-voltage DC is connected to the first end of the low-voltage output assembly, and the second end of the low-voltage output assembly is connected to the external load.

[0059] See also Figure 5 The high-voltage DC / low-voltage DC includes: a first primary conversion circuit, a first isolation conversion circuit, and a first secondary conversion circuit.

[0060] The low voltage output assembly includes a switch control circuit and a voltage conversion circuit.

[0061] The first end of the first primary conversion circuit is connected to the power battery, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion circuit is connected to the first end of the first secondary conversion circuit, the second end of the first secondary conversion circuit is connected to the first end of the switch control circuit, the second end of the switch control circuit is connected to the first end of the voltage conversion circuit, and the second end of the voltage conversion circuit is connected to the external load of the vehicle.

[0062] The first primary conversion circuit is used to receive direct current from the power battery, and convert the direct current into alternating current and transmit it to the primary winding of the first isolation conversion circuit. The first isolation conversion circuit is used to receive alternating current with a voltage value of a first voltage from the first primary conversion circuit through the primary winding, and generate alternating current with a voltage value of a second voltage on the secondary winding and transmit it to the first secondary conversion circuit. The first secondary conversion circuit is used to receive alternating current from the secondary winding, and convert the alternating current into direct current and transmit it to the switch control circuit. The direct current from the first secondary circuit is transmitted to the voltage conversion circuit through the switch control circuit. The voltage conversion circuit is used to convert the voltage of the received direct current and output it to the external load of the vehicle.

[0063] The vehicle's low voltage output assembly includes a control switch and a voltage conversion circuit.

[0064] The low-voltage output assembly of the vehicle includes multiple switch control circuits and multiple voltage conversion circuits. Each switch control circuit and a corresponding voltage conversion circuit form a branch. The first end of each branch is connected to the high-voltage DC / low-voltage DC, and the second end of each branch is connected to the corresponding external load. In this way, the voltage of the power battery can be converted into different power voltages to supply power to loads with different power voltages.

[0065] The vehicle power supply also includes a storage compartment, in which the vehicle's power battery, the vehicle's high-voltage DC / low-voltage DC, and the vehicle's low-voltage output assembly are accommodated.

[0066] The storage bin is provided with a locking mechanism, which is used to be opened when the on-board power supply is electrically disconnected from the vehicle, so as to dismantle the on-board power supply.

[0067] The storage compartment is provided with a low-voltage output interface. The second end of the low-voltage output assembly of the vehicle is connected to the low-voltage output interface to output direct current.

[0068] The storage bin is also provided with an electrical connection interface. The power battery of the vehicle is connected to the electrical connection interface. The power battery of the vehicle is suitable for being electrically connected to the vehicle through the electrical connection interface.

[0069] The vehicle-mounted power supply provided in this embodiment, the power battery and the voltage conversion device in the vehicle's battery system can be removed from the vehicle to form a mobile power supply. The voltage conversion device can convert the voltage of the power battery and output direct current to power external loads, so that the vehicle's battery system can be fully utilized when it is idle, while meeting the owner's external direct current power demand, thereby improving the owner's car experience.

[0070] Example 3

[0071] In one embodiment, the first battery is a power battery of the vehicle. The voltage conversion device includes an off-vehicle voltage conversion device. The off-vehicle voltage conversion device includes a high voltage DC / low voltage DC. Figure 6 .

[0072] In the vehicle power supply, a first end of the high voltage DC / low voltage DC is connected to the power battery, and a second end of the high voltage DC / low voltage DC is connected to an external load.

[0073] The high voltage DC / low voltage DC includes: a first primary conversion circuit, a first isolation conversion circuit, and a first secondary conversion circuit. For a specific circuit diagram, see Figure 5 .

[0074] The first end of the first primary conversion circuit is connected to the power battery, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion circuit is connected to the first end of the first secondary conversion circuit, and the second end of the first secondary conversion circuit is connected to the external vehicle load.

[0075] The first primary conversion circuit is used to receive direct current from the power battery, and convert the direct current into alternating current and transmit it to the primary winding of the first isolation conversion circuit. The first isolation conversion circuit is used to receive alternating current with a voltage value of a first voltage from the first primary conversion circuit through the primary winding, and generate alternating current with a voltage value of a second voltage on the secondary winding and transmit it to the first secondary conversion circuit. The first secondary conversion circuit is used to receive alternating current from the secondary winding, and convert the alternating current into direct current and transmit it to the load outside the vehicle.

[0076] The vehicle-mounted power supply also includes a storage compartment, in which the vehicle's power battery is accommodated.

[0077] The storage bin is provided with a locking mechanism, which is used to be opened when the power battery is electrically disconnected from the vehicle, so as to remove the vehicle-mounted power supply.

[0078] The storage compartment is provided with a low-voltage output interface. The second end of the low-voltage output assembly of the vehicle is connected to the low-voltage output interface to output direct current.

[0079] The storage bin is provided with a first electrical connection interface and a second electrical connection interface. The power battery of the vehicle is connected to the vehicle through the first electrical connection interface. The power battery of the vehicle is connected to the voltage conversion device outside the vehicle through the second electrical connection interface.

[0080] The vehicle-mounted power supply provided in this embodiment is that the power battery in the vehicle's battery system can be removed from the vehicle and constitute a mobile power supply with an external voltage conversion device. The voltage conversion device can convert the voltage of the power battery and output direct current to power external loads, so that the vehicle's battery system can be fully utilized when in an idle state, while meeting the owner's external direct current power demand, thereby improving the owner's vehicle experience.

[0081] Example 4

[0082] In one embodiment, the vehicle-mounted power supply includes a first battery, a voltage conversion device and an AC / DC conversion device. The first battery and the voltage conversion device can refer to any of the above embodiments.

[0083] The first end of the AC / DC converter is connected to the first battery, and the second end of the AC / DC converter is suitable for connecting to an external load. In the vehicle power supply, the AC / DC converter is used to convert the DC power of the first battery into AC power for the external load.

[0084] The vehicle-mounted power supply provided in this embodiment is that the power battery in the vehicle's battery system can be removed from the vehicle, and forms a mobile power supply with the voltage conversion device and the AC conversion device. The voltage conversion device converts the voltage of the power battery and outputs DC power to power external loads. The AC / DC conversion device can convert the DC power of the power battery into AC power to power external loads, so that the vehicle's battery system can be fully utilized when it is idle, while meeting the owner's external DC and AC power consumption needs, thereby improving the owner's car experience.

[0085] Example 5

[0086] In one embodiment, the vehicle-mounted power supply includes a first battery, a voltage conversion device and an AC / DC conversion device. The first battery and the voltage conversion device can refer to any of the above embodiments.

[0087] The AC / DC conversion device is a whole vehicle AC / DC conversion device. The whole vehicle AC / DC conversion device includes: a high-voltage DC / DC, a high-voltage AC / DC and an AC output assembly connected in sequence.

[0088] In the vehicle-mounted power supply, a first end of the vehicle AC / DC converter is connected to the vehicle's power battery, and a second end of the vehicle's AC / DC converter is suitable for connecting to an external load.

[0089] In the vehicle, a first end of the vehicle AC / DC converter is connected to a power battery, and a second end of the vehicle AC / DC converter is suitable for detachably connecting to an AC power load of the vehicle.

[0090] In the vehicle power supply, the first end of the high-voltage DC / DC is connected to the power battery, the second end of the high-voltage DC / DC is connected to the first end of the high-voltage AC / DC, the second end of the high-voltage AC / DC is connected to the first end of the AC power output assembly, and the second end of the AC power output assembly is connected to the external load of the vehicle.

[0091] The high-voltage DC / DC includes a second primary conversion circuit, a second isolation conversion circuit, and a second secondary conversion circuit. The high-voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit.

[0092] The first end of the second secondary conversion circuit is connected to the first battery, the second end of the second secondary conversion circuit is connected to the first end of the second isolation conversion circuit, the second end of the second isolation conversion circuit is connected to the first end of the second primary conversion circuit, the second end of the second primary conversion circuit is connected to the first end of the power factor correction circuit, the second end of the power factor correction circuit is connected to the first end of the switch control circuit, and the second end of the switch control circuit is suitable for being connected to an external load.

[0093] The second secondary conversion circuit is used to receive direct current from the first battery, and convert the direct current into alternating current and transmit it to the secondary winding of the second isolation conversion circuit. The second isolation conversion circuit is used to receive alternating current with a voltage value of a first voltage from the second secondary conversion circuit through the secondary winding, and generate alternating current with a voltage value of a second voltage on the primary winding and transmit it to the second primary conversion circuit. The second primary conversion circuit is used to receive alternating current from the primary winding, and convert the alternating current into direct current and transmit it to the power factor correction circuit. The power factor correction circuit is used to convert the direct current received from the first primary conversion circuit into alternating current. The alternating current from the power factor correction circuit is transmitted to the load outside the vehicle through the switch control circuit of the AC output assembly.

[0094] Example 6

[0095] In one embodiment, the vehicle-mounted power supply includes a first battery, a voltage conversion device and an AC / DC conversion device. The first battery and the voltage conversion device can refer to any of the above embodiments.

[0096] The AC / DC conversion device includes: a high-voltage DC / DC, a high-voltage AC / DC and an AC output assembly connected in sequence. The high-voltage DC / DC and the high-voltage AC / DC are complete vehicle devices that can be removed from the vehicle, and the AC output assembly is an external device.

[0097] In the vehicle power supply, the first end of the high-voltage DC / DC is connected to the power battery, the second end of the high-voltage DC / DC is connected to the first end of the high-voltage AC / DC, the second end of the high-voltage AC / DC is connected to the first end of the AC power output assembly, and the second end of the AC power output assembly is connected to the external load of the vehicle.

[0098] The high-voltage DC / DC includes a second primary conversion circuit, a second isolation conversion circuit, and a second secondary conversion circuit. The high-voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit.

[0099] The first end of the second secondary conversion circuit is connected to the first battery, the second end of the second secondary conversion circuit is connected to the first end of the second isolation conversion circuit, the second end of the second isolation conversion circuit is connected to the first end of the second primary conversion circuit, the second end of the second primary conversion circuit is connected to the first end of the power factor correction circuit, the second end of the power factor correction circuit is connected to the first end of the switch control circuit, and the second end of the switch control circuit is suitable for being connected to an external load.

[0100] The second secondary conversion circuit is used to receive direct current from the first battery, and convert the direct current into alternating current and transmit it to the secondary winding of the second isolation conversion circuit. The second isolation conversion circuit is used to receive alternating current with a voltage value of a first voltage from the second secondary conversion circuit through the secondary winding, and generate alternating current with a voltage value of a second voltage on the primary winding and transmit it to the second primary conversion circuit. The second primary conversion circuit is used to receive alternating current from the primary winding, and convert the alternating current into direct current and transmit it to the power factor correction circuit. The power factor correction circuit is used to convert the direct current received from the first primary conversion circuit into alternating current. The alternating current from the power factor correction circuit is transmitted to the load outside the vehicle through the switch control circuit of the AC output assembly.

[0101] Example 7

[0102] In one embodiment, the vehicle-mounted power supply includes a first battery, a voltage conversion device and an AC / DC conversion device. The first battery and the voltage conversion device can refer to any of the above embodiments.

[0103] The AC / DC conversion device includes: a high-voltage AC / DC and an AC output assembly connected to each other. Both the high-voltage AC / DC and the AC output assembly are complete vehicle devices that can be removed from the vehicle.

[0104] In the vehicle power supply, the first end of the high-voltage AC / DC is connected to the power battery, the second end of the high-voltage AC / DC is connected to the first end of the AC output assembly, and the second end of the AC output assembly is connected to the external load.

[0105] The high voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit.

[0106] The power factor correction circuit is used to convert the direct current received from the first battery into alternating current. The alternating current from the power factor correction circuit is transmitted to the external load of the vehicle through the switch control circuit of the alternating current output assembly.

[0107] Example 8

[0108] In one embodiment, the vehicle-mounted power supply includes a first battery, a voltage conversion device and an AC / DC conversion device. The first battery and the voltage conversion device can refer to any of the above embodiments.

[0109] The AC / DC conversion device includes: a high-voltage AC / DC and an AC output assembly that are connected to each other. The high-voltage AC / DC is a complete vehicle device that can be removed from the vehicle. The AC output assembly is an off-vehicle device.

[0110] In the vehicle power supply, the first end of the high-voltage AC / DC is connected to the power battery, the second end of the high-voltage AC / DC is connected to the first end of the AC output assembly, and the second end of the AC output assembly is connected to the external load.

[0111] The high voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit. The power factor correction circuit is used to convert the DC power received from the first battery into AC power. The AC power from the power factor correction circuit is transmitted to the external load of the vehicle through the switch control circuit of the AC output assembly.

[0112] <Embodiment of battery system of vehicle>

[0113] One embodiment of the present invention provides a battery system for a vehicle. Figure 7 As shown, the battery system of the vehicle of this embodiment includes the vehicle-mounted power supply and the AC / DC converter provided in any of the above embodiments. The first end of the AC / DC converter is connected to the first battery, and the second end of the AC / DC converter is connected to the AC power load of the vehicle.

[0114] See also Figure 7 The AC / DC conversion device includes: a high-voltage DC / DC, a high-voltage AC / DC, and an AC output assembly connected in sequence. The first end of the high-voltage DC / DC is connected to the first battery, the second end of the high-voltage DC / DC is connected to the first end of the high-voltage AC / DC, the second end of the high-voltage AC / DC is connected to the first end of the AC output assembly, and the second end of the AC output assembly is connected to the AC power load.

[0115] See also Figure 7 The voltage conversion device includes a high voltage DC / low voltage DC and a low voltage output assembly connected to each other.

[0116] In one embodiment, see Figure 8 The second battery is a non-power battery of the vehicle. The first battery is connected to the second battery via a high voltage DC / low voltage DC.

[0117] See also Fig. 9 The high-voltage DC / DC includes a second secondary conversion circuit, a second isolation conversion circuit, and a second primary conversion circuit. The high-voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit.

[0118] The first end of the second secondary conversion circuit is connected to the first battery, the second end of the second secondary conversion circuit is connected to the first end of the second isolation conversion circuit, the second end of the second isolation conversion circuit is connected to the first end of the second primary conversion circuit, the second end of the second primary conversion circuit is connected to the first end of the power factor correction circuit, the second end of the power factor correction circuit is connected to the first end of the switch control circuit, and the switch control circuit is connected to the AC power load.

[0119] The second secondary conversion circuit is used to receive direct current from the first battery, and convert the direct current into alternating current and transmit it to the secondary winding of the second isolation conversion circuit. The second isolation conversion circuit is used to receive alternating current with a voltage value of the third voltage from the second secondary conversion circuit through the secondary winding, and generate alternating current with a voltage value of the fourth voltage on the primary winding and transmit it to the second primary conversion circuit. The second primary conversion circuit is used to receive alternating current from the primary winding, and convert the alternating current into direct current and transmit it to the power factor correction circuit. The power factor correction circuit is used to convert the direct current received from the second primary conversion circuit into alternating current. The alternating current from the power factor correction circuit is transmitted to the AC power load connection through the switch control circuit of the AC output assembly.

[0120] Fig.10 Another schematic diagram of a vehicle's battery system is shown. Fig.10 The vehicle's battery system includes a power battery assembly, a power distribution circuit, a voltage conversion device, an AC / DC conversion device, and a non-power battery.

[0121] The power distribution circuit includes at least one fuse and at least one control switch.

[0122] The voltage conversion device includes a high voltage DC / low voltage DC and a low voltage output assembly which are connected to each other.

[0123] See the detailed circuit diagram of high voltage DC / low voltage DC for details. Figure 5 The low voltage output assembly includes a switch control circuit and a voltage conversion circuit.

[0124] A first end of the high voltage DC / low voltage DC is connected to the power battery assembly, a second end of the high voltage DC / low voltage DC is connected to a first end of the low voltage output assembly, and a second end of the low voltage output assembly is connected to a non-power load of the vehicle.

[0125] The AC / DC conversion device includes: high-voltage DC / DC, high-voltage AC / DC and AC output assembly. For the specific circuit diagram of high-voltage DC / DC and high-voltage AC / DC, please refer to Fig. 9 The AC output assembly includes a switch control circuit.

[0126] The first end of the high-voltage DC / DC is connected to the power battery assembly, the second end of the high-voltage DC / DC is connected to the first end of the high-voltage AC / DC, the second end of the high-voltage AC / DC is connected to the first end of the AC power output assembly, and the second end of the AC power output assembly is connected to the AC power load.

[0127] The power battery assembly supplies power to the vehicle's non-power loads through the power distribution circuit and voltage conversion device.

[0128] The power battery assembly outputs high-voltage AC power through the power distribution circuit and the AC / DC converter to supply power to the AC power load. The high-voltage AC power is AC power within the high-voltage standard range, such as 220V and 380V.

[0129] Non-power batteries can also power non-power loads.

[0130] The power battery assembly supplies power to the vehicle's power system through a power distribution circuit. Specifically, the power battery assembly outputs high-voltage direct current to the inverter, which converts the high-voltage direct current into high-voltage alternating current to drive the AC motor to output torque.

[0131] The power battery supplies power to the air-conditioning compressor and PTC (Positive Temperature Coefficient) heater through the power distribution circuit.

[0132] See also Fig.10 The AC power output by the charging device is used to charge the power battery through the AC charging port and the AC-DC conversion device.

[0133] Combination Fig. 9 , the power factor correction circuit is used to receive AC power from the charging device, convert the AC power into DC power and transmit it to the second primary conversion circuit. The second primary conversion circuit is used to receive DC power from the power factor correction circuit, convert the DC power into AC power and transmit it to the second isolation conversion circuit. The second isolation conversion circuit is used to receive AC power with a voltage value of a first voltage from the second primary conversion circuit through the primary winding, and transmit it to the second secondary conversion circuit after generating AC power with a voltage value of a second voltage in the secondary winding. The second secondary conversion circuit is used to receive AC power from the secondary winding of the second isolation conversion circuit, and convert the AC power into DC power and transmit it to the power battery assembly through the distribution circuit to charge the power battery.

[0134] The AC power output by the charging device is used to charge the non-power battery via the AC charging port, the AC / DC converter, and the high-voltage DC / low-voltage DC of the voltage converter.

[0135] Combination Figure 5 and Fig. 9, the power factor correction circuit is used to receive AC power from the charging device, convert the AC power into DC power and transmit it to the second primary conversion circuit. The second primary conversion circuit is used to receive DC power from the power factor correction circuit, convert the DC power into AC power and transmit it to the second isolation conversion circuit. The second isolation conversion circuit is used to receive AC power with a voltage value of the first voltage from the second primary conversion circuit through the primary winding, and transmit it to the second secondary conversion circuit after generating AC power with a voltage value of the second voltage on the secondary winding. The second secondary conversion circuit is used to receive AC power from the secondary winding of the second isolation conversion circuit, and convert the AC power into DC power and transmit it to the first primary conversion circuit through the distribution circuit. The first primary conversion circuit is used to receive DC power from the second secondary conversion circuit, and convert the DC power into AC power and transmit it to the primary winding of the first isolation conversion circuit. The first isolation conversion circuit is used to receive AC power with a voltage value of the third voltage from the first primary conversion circuit through the primary winding, and generate AC power with a voltage value of the fourth voltage on the secondary winding and transmit it to the first secondary conversion circuit. The first secondary conversion circuit is used for receiving the alternating current from the secondary winding and converting the alternating current into direct current for transmission to the non-power battery.

[0136] In one embodiment, the power battery and the voltage conversion device are removed from the vehicle to form an on-board power supply.

[0137] In one embodiment, the power battery is removed from the vehicle and forms an on-board power source with an off-vehicle voltage conversion device.

[0138] <Vehicle Embodiment>

[0139] One embodiment of the present invention provides a vehicle, comprising a battery system for the vehicle according to any of the above embodiments.

[0140] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For the electric vehicle embodiment, its related parts can be referred to the partial description of the method embodiment.

[0141] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0142] The embodiments of the present specification may be systems, methods and / or computer program products. The computer program product may include a computer-readable storage medium carrying computer instructions for causing a processor to implement various aspects of the embodiments of the present specification.

[0143] A computer-readable storage medium may be a tangible device that can hold and store computer instructions used by a computer instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which computer instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0144] The computer instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer instructions from the network and forwards the computer instructions for storage in the computer-readable storage medium in each computing / processing device.

[0145] The flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to the multiple embodiments of this specification. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a computer instruction, and a part of a module, a program segment or a computer instruction contains one or more executable computer instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of the boxes in the block diagram and / or the flowchart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.

[0146] The embodiments of the present specification have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A vehicle-mounted power supply, wherein at least part of the device of the vehicle-mounted power supply is detachably connected to the vehicle, characterized in that: include: a first battery, the first battery being a power battery of the vehicle, and the first battery being used to supply power to an external load of the vehicle when in a disassembled state; A voltage conversion device, wherein the first end of the voltage conversion device is connected to the first battery, and the second end of the voltage conversion device is suitable for connecting to the external load. In the vehicle power supply, the voltage conversion device is used to convert the voltage of the first battery and output direct current to the external load.

2. The vehicle-mounted power supply according to claim 1, characterized in that: The voltage conversion device includes a high voltage DC / low voltage DC of the vehicle and a low voltage output assembly of the vehicle, and both the high voltage DC / low voltage DC of the vehicle and the low voltage output assembly of the vehicle are complete vehicle devices that can be removed from the vehicle.

3. The vehicle-mounted power supply according to claim 2, characterized in that: The high voltage DC / low voltage DC comprises: a first primary side conversion circuit, a first isolation conversion circuit, and a first secondary side conversion circuit; The low voltage output assembly includes a switch control circuit and a voltage conversion circuit; The first end of the first primary conversion circuit is connected to the first battery assembly, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion is connected to the first end of the first secondary conversion circuit, the second end of the first secondary conversion circuit is connected to the first end of the switch control circuit, the second end of the switch control circuit is connected to the first end of the voltage conversion circuit, and the second end of the voltage conversion circuit is connected to the external vehicle load.

4. The vehicle-mounted power supply according to claim 1, characterized in that: The voltage conversion device includes an off-vehicle voltage conversion device, and the off-vehicle voltage conversion device includes high voltage DC / low voltage DC.

5. The vehicle-mounted power supply according to claim 4, characterized in that: The high voltage DC / low voltage DC comprises: a first primary side conversion circuit, a first isolation conversion circuit, and a first secondary side conversion circuit; The first end of the first primary conversion circuit is connected to the power battery assembly, the second end of the first primary conversion circuit is connected to the first end of the first isolation conversion circuit, the second end of the first isolation conversion circuit is connected to the first end of the first secondary conversion circuit, and the second end of the first secondary conversion circuit is connected to the external vehicle load.

6. The vehicle-mounted power supply according to claim 1, characterized in that: The vehicle-mounted power supply further includes a storage compartment, in which the first battery and the voltage conversion device are accommodated.

7. The vehicle-mounted power supply according to claim 6, characterized in that: The storage bin is provided with a locking mechanism, and the locking mechanism is used to be opened when the on-board power supply is electrically disconnected from the vehicle, so as to dismantle the on-board power supply.

8. The vehicle-mounted power supply according to claim 6, characterized in that: The storage bin is provided with a low voltage output interface, and the second end of the voltage conversion device is connected to the low voltage output interface to output direct current.

9. The vehicle-mounted power supply according to claim 6, characterized in that: The storage bin is also provided with an electrical connection interface, the first battery is connected to the electrical connection interface, and the first battery is suitable for being electrically connected to the vehicle through the electrical connection interface.

10. A battery system for a vehicle, characterized in that: include: The vehicle-mounted power supply according to any one of claims 1 to 9; An AC / DC conversion device, wherein a first end of the AC / DC conversion device is connected to the first battery, and a second end of the AC / DC conversion device is connected to an AC power load of the vehicle.

11. The battery system according to claim 10, characterized in that: The battery system also includes: an AC / DC conversion device, a first end of which is connected to the first battery, and a second end of which is connected to the vehicle's AC power load; the AC / DC conversion device includes: a high-voltage DC / DC, a high-voltage AC / DC, and an AC output assembly connected in sequence.

12. The battery system according to claim 11, characterized in that: The high-voltage DC / DC includes a second secondary conversion circuit, a second isolation conversion circuit, and a second primary conversion circuit; The high voltage AC / DC includes a power factor correction circuit; The AC power output assembly includes a switch control circuit; A first end of the second secondary conversion circuit is connected to the first battery, a second end of the second secondary conversion circuit is connected to a first end of the second isolation conversion circuit, a second end of the second isolation conversion circuit is connected to a first end of the second primary conversion circuit, a second end of the second primary conversion circuit is connected to a first end of the power factor correction circuit, and a second end of the power factor correction circuit is connected to the switch control circuit.

13. The battery system according to claim 10, characterized in that: Also includes: The second battery is a non-power battery of the vehicle, and the first battery is connected to the second battery via a high voltage DC / low voltage DC.

14. A vehicle, characterized in that: include: A battery system as claimed in any one of claims 10 to 13.

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