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, the first battery is a non-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 first voltage conversion device is connected with the first battery, and the second end of the first voltage conversion device is suitable for being connected with the load outside the vehicle. The first 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 is a non-power battery of the vehicle, and the first battery is used to supply power to an external load of the vehicle when the first battery is in a disassembled state;

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

[0008] Optionally, the first voltage conversion device includes a low-voltage output assembly of the vehicle, a first end of the low-voltage output assembly of the vehicle is connected to the first battery, and a second end of the low-voltage output assembly of the vehicle is suitable for detachable connection to a non-power load of the vehicle.

[0009] Optionally, the first voltage conversion device includes an off-vehicle voltage conversion device, a first end of the off-vehicle voltage conversion device is connected to the first battery, and a second end of the off-vehicle voltage conversion device is suitable for connecting to the off-vehicle load.

[0010] Optionally, the first voltage conversion device includes:

[0011] a switch control circuit, wherein a first end of the switch control circuit is connected to the first battery;

[0012] A voltage conversion circuit, wherein a first end of the voltage conversion circuit is connected to a second end of the switch control circuit, and a second end of the voltage conversion circuit is suitable for being connected to the external vehicle load.

[0013] Optionally, the first battery is at least one of a storage battery, an iron battery and a supercapacitor.

[0014] Optionally, the vehicle-mounted power supply further includes a storage compartment, in which the first battery and the first voltage conversion device are accommodated.

[0015] 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.

[0016] Optionally, the storage bin is provided with a low-voltage output interface, and the second end of the first voltage conversion device is connected to the low-voltage output interface to output direct current.

[0017] 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.

[0018] According to a second aspect of the present invention, there is provided a battery system for a vehicle, comprising:

[0019] Power battery assembly;

[0020] a second voltage conversion device, a first end of which is connected to the power battery assembly and is used to convert the voltage output by the power battery assembly;

[0021] The vehicle-mounted power supply as described in any one of the first aspects, wherein the vehicle-mounted power supply is connected to the second end of the second voltage conversion device.

[0022] Optionally, the second voltage conversion device includes:

[0023] High voltage DC / low voltage DC, 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;

[0024] 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 vehicle power supply.

[0025] Optionally, the battery system further includes:

[0026] an AC / DC converter, wherein a first end of the AC / DC converter is connected to the power battery assembly, and a second end of the AC / DC converter is connected to an AC power load;

[0027] The AC / DC conversion device comprises: a high-voltage DC / DC, a high-voltage AC / DC and an AC output assembly connected in sequence.

[0028] Optionally, the high-voltage DC / DC includes a second secondary conversion circuit, a second isolation conversion circuit, and a second primary conversion circuit;

[0029] The high voltage AC / DC includes a power factor correction circuit;

[0030] The AC power output assembly includes a switch control circuit;

[0031] A first end of the second secondary conversion circuit is connected to the power battery assembly, 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, a second end of the power factor correction circuit is connected to a first end of the switch control circuit, and the switch control circuit is connected to the AC power load.

[0032] Optionally, the battery system further includes:

[0033] A second battery, wherein the first end of the second battery is connected to the second voltage conversion device, the second end of the second battery is suitable for connecting to a non-power load of the vehicle, and the second battery is used to power the non-power load of the vehicle when the on-board power supply is removed.

[0034] Optionally, the battery system further includes:

[0035] Auxiliary source DC, the first end of the auxiliary source DC is connected to the power battery assembly through a switch control circuit, and the second end of the auxiliary source DC is connected to the non-power load of the vehicle. When the on-board power supply is removed, the auxiliary source DC is used to power the non-power load of the vehicle.

[0036] Optionally, the auxiliary source DC includes: a third primary conversion circuit, a third isolation conversion circuit, and a third secondary conversion circuit;

[0037] The first end of the third primary conversion circuit is connected to the power battery assembly, the second end of the third primary conversion circuit is connected to the first end of the third isolation conversion circuit, the second end of the third isolation conversion circuit is connected to the first end of the third secondary conversion circuit, and the second end of the third secondary conversion circuit is connected to the non-power load of the vehicle.

[0038] 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.

[0039] The vehicle-mounted power supply provided by the present invention is that the non-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 non-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.

[0040] 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

[0041] 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.

[0042] Figure 1 A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0043] Figure 2 A schematic diagram of a battery system is shown after a non-power battery is removed from a battery system of a vehicle.

[0044] Figure 3 A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0045] Figure 4 A schematic diagram of a battery system is shown after a non-power battery and a low-voltage output assembly are removed from a battery system of a vehicle.

[0046] Figure 5 A structural block diagram of a vehicle power supply according to an embodiment of the present invention is shown.

[0047] Figure 6 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0048] Figure 7 A circuit diagram of a high voltage DC / low voltage DC according to an embodiment of the present invention is shown.

[0049] Figure 8 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0050] Fig. 9 A circuit diagram of a high voltage DC / DC according to an embodiment of the present invention is shown.

[0051] Fig.10 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0052] Fig.11 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown.

[0053] Fig.12 A structural block diagram of a battery system for a vehicle according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0054] Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

[0055] 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.

[0056] 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.

[0057] <In-vehicle power supply embodiment>

[0058] Example 1

[0059] 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 first voltage conversion device.

[0060] The first battery is a non-power battery of the vehicle and is used to supply power to external loads when the battery is disassembled. Figure 2 The schematic diagram of the battery system after the non-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 non-power battery in the battery system of the vehicle.

[0061] The first end of the first voltage conversion device is connected to the first battery, and the second end of the first voltage conversion device is suitable for connecting to an external load. In the vehicle power supply, the first voltage conversion device is used to convert the voltage of the first battery and output direct current to the external load.

[0062] The vehicle-mounted power supply provided in this embodiment is that the non-power battery in the vehicle's battery system can be removed from the vehicle and constitutes a mobile power supply with a voltage conversion device. The voltage conversion device converts the voltage of the non-power battery and outputs 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.

[0063] In one embodiment, the first battery is at least one of a secondary battery, a ferroelectric battery, and a supercapacitor.

[0064] In one embodiment, the first voltage conversion device includes a switch control circuit and a voltage conversion circuit. The first end of the switch control circuit is connected to the first battery. The first end of the voltage conversion circuit is connected to the second end of the switch control circuit. The second end of the voltage conversion circuit is suitable for connecting to an external load.

[0065] The first voltage conversion device can step down the voltage of the first battery and output direct current to the external load, or can step up the voltage of the first battery and output direct current to the external load.

[0066] For example, the voltage of the first battery is 12V, and the first voltage conversion device is configured to convert the 12V voltage of the non-power battery into 5V to supply power to a load with a power voltage of 5V.

[0067] For another example, the voltage of the first battery is 12V, and the first voltage conversion device is configured to convert the 12V voltage of the non-power battery into 24V to supply power to a load that consumes a voltage of 24V.

[0068] The first voltage conversion device includes a control switch and a voltage conversion circuit, so that the first voltage conversion device is configured to convert the voltage of the non-power battery into a corresponding power consumption voltage.

[0069] The first voltage conversion device includes a plurality of switch control circuits and a plurality of voltage conversion circuits. Each switch control circuit and the corresponding voltage conversion circuit form a branch. The first end of each branch is connected to the first battery, and the second end of each branch is connected to the corresponding external load. In this way, the first voltage conversion device is configured to convert the voltage of the non-power battery into different power voltages, and supply power to loads with different power voltages.

[0070] In one embodiment, the vehicle-mounted power supply further includes a storage compartment in which the first battery and the first voltage conversion device are accommodated.

[0071] 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.

[0072] The storage bin is provided with a low voltage output interface. The second end of the first 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.

[0073] Example 2

[0074] In one embodiment, the first battery is a non-power battery of the vehicle. The first voltage conversion device includes a low voltage output assembly of the vehicle.

[0075] See also Figure 3The vehicle power supply of this embodiment includes a non-power battery of the vehicle and a low-voltage output assembly of the vehicle.

[0076] In the vehicle-mounted power supply, a first end of the vehicle's low-voltage output assembly is connected to the vehicle's non-power battery, and a second end of the vehicle's low-voltage output assembly is suitable for connecting to an external load.

[0077] In a vehicle, a first end of a low-voltage output assembly of the vehicle is connected to a non-power battery of the vehicle, and a second end of the low-voltage output assembly of the vehicle is suitable for detachably connecting to a non-power load of the vehicle.

[0078] Figure 4 A schematic diagram of a battery system after the non-power battery and the 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 non-power battery in the battery system of the vehicle. The location of the dotted line frame 2 is the location of the low-voltage output assembly in the battery system of the vehicle.

[0079] In this embodiment, the low voltage output assembly of the vehicle includes a switch control circuit and a voltage conversion circuit. The first end of the switch control circuit is connected to the non-power battery of the vehicle. The first end of the voltage conversion circuit is connected to the second end of the switch control circuit. In the vehicle power supply, the second end of the voltage conversion circuit is suitable for connecting to an external load. In the vehicle, the second end of the voltage conversion circuit is suitable for connecting to a non-power load of the vehicle.

[0080] The vehicle's low voltage output assembly includes a control switch and a voltage conversion circuit.

[0081] 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 non-power battery of the vehicle, and the second end of each branch is connected to the corresponding external load. In this way, the low-voltage output assembly of the vehicle is configured to convert the voltage of the non-power battery into different power voltages, and supply power to loads with different power voltages.

[0082] The vehicle-mounted power supply also includes a storage compartment, in which the vehicle's non-power battery and the vehicle's low-voltage output assembly are accommodated.

[0083] 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.

[0084] 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.

[0085] The storage bin is also provided with an electrical connection interface. The non-power battery of the vehicle is connected to the electrical connection interface. The non-power battery of the vehicle is suitable for being electrically connected to the vehicle through the electrical connection interface.

[0086] The vehicle-mounted power supply provided in this embodiment, the non-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 non-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 DC power demand, thereby improving the owner's car experience.

[0087] Example 3

[0088] In one embodiment, the first battery is a non-power battery of the vehicle, and the first voltage conversion device includes an off-vehicle voltage conversion device.

[0089] See also Figure 5 The vehicle-mounted power supply of this embodiment includes a non-power battery of the vehicle and an off-vehicle voltage conversion device.

[0090] In the vehicle-mounted power supply, a first end of the off-vehicle voltage conversion device is connected to a non-power battery of the vehicle, and a second end of the off-vehicle voltage conversion device is suitable for connecting to an off-vehicle load.

[0091] In this embodiment, the off-vehicle voltage conversion device includes a switch control circuit and a voltage conversion circuit. The first end of the switch control circuit is connected to the non-power battery of the vehicle. The first end of the voltage conversion circuit is connected to the second end of the switch control circuit. In the vehicle power supply, the second end of the voltage conversion circuit is suitable for connecting to an off-vehicle load.

[0092] The off-vehicle voltage conversion device includes a control switch and a voltage conversion circuit.

[0093] The off-vehicle voltage conversion device includes a plurality of switch control circuits and a plurality of voltage conversion circuits. Each switch control circuit and the corresponding voltage conversion circuit form a branch. The first end of each branch is connected to the non-power battery of the vehicle, and the second end of each branch is connected to the corresponding off-vehicle load. In this way, the off-vehicle voltage conversion device is configured to convert the voltage of the non-power battery into different power voltages, and supply power to loads with different power voltages.

[0094] The vehicle-mounted power supply also includes a storage compartment. The vehicle's non-power battery is accommodated in the storage compartment.

[0095] The storage bin is provided with a locking mechanism, which is used to be opened when the non-power battery of the vehicle is disconnected from the electrical connection of the vehicle, so as to remove the non-power battery of the vehicle.

[0096] The storage bin is provided with a first electrical connection interface and a second electrical connection interface. The non-power battery of the vehicle is connected to the vehicle through the first electrical connection interface. The non-power battery of the vehicle is connected to the off-vehicle voltage conversion device through the second electrical connection interface.

[0097] The vehicle-mounted power supply provided in this embodiment is that the non-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 external voltage conversion device can convert the voltage of the non-power battery and output direct current to power external loads, so that the vehicle's non-power battery can be fully utilized when in an idle state, while meeting the owner's external power needs and improving the owner's car experience.

[0098] Example 4

[0099] In one embodiment, the vehicle-mounted power supply includes: a first battery, a first voltage conversion device and an AC / DC conversion device. The first battery and the first voltage conversion device can refer to any of the above embodiments, and will not be described in detail here.

[0100] 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.

[0101] In one embodiment, the AC / DC conversion device is a vehicle AC / DC conversion device, which includes: a high-voltage DC / low-voltage DC, a high-voltage DC / DC, a high-voltage AC / DC, and an AC output assembly connected in sequence.

[0102] In the vehicle power supply, the first end of the high-voltage DC / low-voltage DC is connected to the non-power battery, the second end of the high-voltage DC / low-voltage DC is connected to the first end of the high-voltage DC / DC, 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.

[0103] 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.

[0104] 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.

[0105] The first end of the first secondary conversion circuit is connected to the non-power battery, the second end of the first secondary 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 primary conversion circuit, and the second end of the first primary conversion circuit is connected to the first end of the second secondary conversion circuit.

[0106] 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 external vehicle load.

[0107] The first secondary conversion circuit is used to receive direct current from a non-power battery, and convert the direct current into alternating current and transmit it to the secondary 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 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 first primary conversion circuit. The first 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 second secondary conversion circuit of the high-voltage DC / DC.

[0108] The second secondary conversion circuit is used to receive direct current from the first primary conversion circuit, 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 load outside the vehicle through the switch control circuit of the AC output assembly.

[0109] The vehicle-mounted power supply provided in this embodiment is that the non-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 can convert the voltage of the first battery and output DC power to power the external load, and convert the DC power of the non-power battery into AC power to power the external load, so that the battery system of the vehicle can be fully utilized when it is idle, while meeting the owner's external DC and AC power needs, thereby improving the owner's car experience.

[0110] Example 5

[0111] In one embodiment, the vehicle-mounted power supply includes: a first battery, a first voltage conversion device and an AC / DC conversion device. The first battery and the first voltage conversion device can refer to any of the above embodiments, and will not be described in detail here.

[0112] The AC / DC conversion device includes: high-voltage DC / low-voltage DC, high-voltage DC / DC, high-voltage AC / DC and AC output assembly connected in sequence. High-voltage DC / low-voltage DC, high-voltage DC / DC and high-voltage AC / DC are all complete vehicle devices that can be removed from the vehicle, and the AC output assembly is an external device.

[0113] The specific structure and connection relationship of the high-voltage DC / low-voltage DC, high-voltage DC / DC, high-voltage AC / DC and alternating current output assembly are the same as those in the previous embodiment, and will not be described in detail here.

[0114] Example 6

[0115] In one embodiment, the vehicle-mounted power supply includes: a first battery, a first voltage conversion device and an AC / DC conversion device. The first battery and the first voltage conversion device can refer to any of the above embodiments, and will not be described in detail here.

[0116] The AC / DC conversion device includes: high voltage DC / low voltage DC, high voltage AC / DC and AC output assembly connected in sequence. High voltage DC / low voltage DC, high voltage AC / DC and AC output assembly are all complete vehicle devices that can be removed from the vehicle.

[0117] In the vehicle power supply, the first end of the high-voltage DC / low-voltage DC is connected to the non-power battery, the second end of the high-voltage DC / low-voltage 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.

[0118] 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.

[0119] The high voltage AC / DC includes a power factor correction circuit. The AC output assembly includes a switch control circuit.

[0120] The first end of the first secondary conversion circuit is connected to the non-power battery, the second end of the first secondary 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 primary conversion circuit, the second end of the first 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 external vehicle load.

[0121] The first secondary conversion circuit is used to receive direct current from a non-power battery, and convert the direct current into alternating current before transmitting it to the secondary 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 secondary conversion circuit through the secondary winding, and generate alternating current with a voltage value of a second voltage on the primary winding before transmitting it to the first primary conversion circuit. The first primary conversion circuit is used to receive alternating current from the primary winding, and convert the alternating current into direct current before transmitting 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.

[0122] Example 7

[0123] In one embodiment, the vehicle-mounted power supply includes: a first battery, a first voltage conversion device and an AC / DC conversion device. The first battery and the first voltage conversion device can refer to any of the above embodiments, and will not be described in detail here.

[0124] The AC / DC conversion device includes: interconnected high-voltage DC / low-voltage DC and high-voltage DC / AC. High-voltage DC / low-voltage DC is a complete vehicle device that can be removed from the vehicle, and high-voltage DC / AC is an external device.

[0125] In the vehicle power supply, the first end of the high voltage DC / low voltage DC is connected to the first battery, the second end of the high voltage DC / low voltage DC is connected to the first end of the high voltage DC / AC, and the second end of the high voltage DC / AC is connected to the external load.

[0126] 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.

[0127] The high voltage DC / AC includes a power factor correction circuit.

[0128] The first end of the first secondary conversion circuit is connected to the non-power battery, the second end of the first secondary 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 primary conversion circuit, the second end of the first 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 external vehicle load.

[0129] The first secondary conversion circuit is used to receive direct current from a non-power battery, and convert the direct current into alternating current before transmitting it to the secondary 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 secondary conversion circuit through the secondary winding, and generate alternating current with a voltage value of a second voltage on the primary winding before transmitting it to the first primary conversion circuit. The first primary conversion circuit is used to receive alternating current from the primary winding, and convert the alternating current into direct current before transmitting 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.

[0130] Example 8

[0131] In one embodiment, the vehicle-mounted power supply includes: a first battery, a first voltage conversion device and an AC / DC conversion device. The first battery and the first voltage conversion device can refer to any of the above embodiments, and will not be described in detail here.

[0132] The AC / DC conversion device is an external DC / DC conversion device. The external DC / DC conversion device includes a high-voltage DC / AC. A first end of the high-voltage DC / AC is connected to a first battery, and a second end of the high-voltage DC / AC is connected to an external load.

[0133] <Embodiment of battery system of vehicle>

[0134] An embodiment of the present invention provides a battery system for a vehicle. The battery system for a vehicle of this embodiment includes a power battery assembly, a second voltage conversion device, and a vehicle-mounted power supply provided by any of the above embodiments.

[0135] The first end of the second voltage conversion device is connected to the power battery assembly. The second voltage conversion device is used to convert the voltage output by the power battery assembly. The second end of the second voltage conversion device is connected to the vehicle power supply.

[0136] In one embodiment, the first battery of the vehicle power supply is a non-power battery of the vehicle, and the first voltage conversion device of the vehicle power supply includes a low-voltage output assembly of the vehicle. When the non-power battery of the vehicle and the low-voltage output assembly of the vehicle are not removed from the vehicle, the first end of the second voltage conversion device is connected to the power battery assembly, and the second end of the second voltage conversion device is respectively connected to the non-power battery of the vehicle and the low-voltage output assembly of the vehicle.

[0137] In one embodiment, the first battery of the vehicle power supply is a non-power battery of the vehicle, and the first voltage conversion device of the vehicle power supply includes an off-vehicle voltage conversion device. When the non-power battery of the vehicle is not removed from the vehicle, the first end of the second voltage conversion device is connected to the power battery assembly, and the second end of the second voltage conversion device is connected to the non-power battery of the vehicle.

[0138] In one embodiment, Figure 6 The second voltage conversion device shown includes high voltage DC / low voltage DC.

[0139] See also Figure 7 The high-voltage DC / low-voltage DC includes a first primary conversion circuit, a first isolation conversion circuit, and a first secondary conversion circuit.

[0140] 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 vehicle power supply.

[0141] The first primary conversion circuit is used to receive direct current from the power battery assembly, 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 vehicle power supply.

[0142] In one embodiment, the battery system of the vehicle further includes an AC / DC converter, a first end of which is connected to the power battery assembly, and a second end of which is connected to an AC power load.

[0143] See also Figure 8 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 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 output assembly, and the second end of the AC output assembly is connected to the AC power load.

[0144] 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.

[0145] The first end of the second secondary conversion circuit is connected to the power battery assembly, 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.

[0146] The second secondary conversion circuit is used to receive direct current from the power battery assembly, 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.

[0147] In one embodiment, see Fig.10 The battery system of the vehicle further includes: a second battery. The first end of the second battery is connected to the second voltage conversion device, and the second end of the second battery is suitable for connecting to the non-power load of the vehicle. The second battery is used to supply power to the non-power load of the vehicle when the vehicle power supply is removed. In this way, the power demand of the non-power load of the vehicle can be ensured when the vehicle power supply is removed, and the operation of the non-power load of the vehicle will not be affected.

[0148] In this embodiment, see Fig.10 In another embodiment, when the first battery is not removed from the vehicle, only the first battery supplies power to the non-power loads of the vehicle, and when the first battery is removed from the vehicle, the second battery supplies power to the non-power loads of the vehicle.

[0149] In one embodiment, any one of the first battery and the second battery can be removed from the vehicle to form an on-board power source together with the first voltage conversion device.

[0150] The second battery is at least one of a storage battery, an iron battery and a super capacitor.

[0151] In one embodiment, see Fig.11, the battery system of the vehicle also includes: an auxiliary source DC. When the vehicle power supply is removed, the first end of the auxiliary source DC is connected to the power battery assembly through the switch control circuit, and the second end of the auxiliary source DC is connected to the non-power load of the vehicle. The auxiliary source DC is used to work when the vehicle power supply is removed to supply power to the non-power load of the vehicle. In this way, the power demand of the non-power load of the vehicle can be guaranteed when the vehicle power supply is removed, and the operation of the non-power load of the vehicle will not be affected.

[0152] When the vehicle power supply is not removed, the first end of the auxiliary source DC is electrically disconnected from the power battery assembly. When the vehicle power supply is removed, the switch in the switch control circuit is closed, and the first end of the auxiliary source DC is electrically connected to the power battery assembly.

[0153] The auxiliary source DC includes: a third primary conversion circuit, a third isolation conversion circuit, and a third secondary conversion circuit. The specific circuit diagram of the auxiliary source DC can be found in Figure 7 .

[0154] The first end of the third primary conversion circuit is connected to the power battery assembly, the second end of the third primary conversion circuit is connected to the first end of the third isolation conversion circuit, the second end of the third isolation conversion circuit is connected to the first end of the third secondary conversion circuit, and the second end of the third secondary conversion circuit is connected to the non-power load of the vehicle.

[0155] The third primary conversion circuit is used to receive direct current from the power battery assembly, and convert the direct current into alternating current and transmit it to the primary winding of the third isolation conversion circuit. The third isolation conversion circuit is used to receive alternating current with a voltage value of the fifth voltage from the third primary conversion circuit through the primary winding, and generate alternating current with a voltage value of the sixth voltage on the secondary winding and transmit it to the third secondary conversion circuit. The third 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 non-power load of the vehicle.

[0156] Fig.12 Another schematic diagram of a vehicle's battery system is shown. Fig.12 The battery system of the vehicle includes a power battery assembly, a power distribution circuit, a second voltage conversion device, an AC / DC conversion device, a non-power battery, and a first voltage conversion device.

[0157] The first end of the second voltage conversion device is connected to the power battery assembly through the power distribution circuit, and the second end of the second voltage conversion device is connected to the non-power battery. The second end of the second voltage conversion device is also connected to the first end of the first voltage conversion device. The non-power battery is connected to the first end of the first voltage conversion device. The second end of the first voltage conversion device is connected to the non-power load of the vehicle.

[0158] A first end of the AC / DC conversion device is connected to the power battery assembly through a power distribution circuit, and a second end of the AC / DC conversion device is connected to an AC power load.

[0159] The first voltage conversion device includes a low voltage output assembly. The low voltage output assembly includes a switch control circuit and a voltage conversion circuit. The first end of the switch control circuit is connected to the non-power battery. The first end of the voltage conversion circuit is connected to the second end of the switch control circuit. The second end of the voltage conversion circuit is connected to the non-power load of the vehicle.

[0160] The second voltage conversion device includes a high voltage DC / low voltage DC. The specific circuit diagram of the high voltage DC / low voltage DC is shown in Figure 7 .

[0161] 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 power output assembly includes a switch control circuit.

[0162] The power distribution circuit includes at least one fuse and at least one control switch.

[0163] The power battery assembly supplies power to the non-power loads of the vehicle through the power distribution circuit, the second voltage conversion device, and the first voltage conversion device.

[0164] 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.

[0165] Non-power batteries can also power non-power loads.

[0166] 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.

[0167] The power battery supplies power to the air-conditioning compressor and PTC (Positive Temperature Coefficient) heater through the power distribution circuit.

[0168] See also Fig.12 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.

[0169] 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.

[0170] The AC power output by the charging device is used to charge the non-power battery via the AC charging port, the AC-DC conversion device, and the voltage conversion device.

[0171] Combination Figure 7 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.

[0172] In one embodiment, the non-power battery and the first voltage conversion device are removed from the vehicle to form an on-board power supply.

[0173] In one embodiment, the non-power battery is removed from the vehicle and forms an on-board power source with an off-vehicle voltage conversion device.

[0174] <Vehicle Embodiment>

[0175] One embodiment of the present invention provides a vehicle, comprising a battery system for the vehicle according to any of the above embodiments.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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 is a non-power battery of the vehicle, and the first battery is used to supply power to an external load of the vehicle when the first battery is in a disassembled state; A first voltage conversion device, wherein the first end of the first voltage conversion device is connected to the first battery, and the second end of the first voltage conversion device is suitable for connecting to the external load. In the vehicle power supply, the first 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 first voltage conversion device includes a low-voltage output assembly of the vehicle, a first end of the low-voltage output assembly of the vehicle is connected to the first battery, and a second end of the low-voltage output assembly of the vehicle is suitable for detachable connection with a non-power load of the vehicle.

3. The vehicle-mounted power supply according to claim 1, characterized in that: The first voltage conversion device includes an off-vehicle voltage conversion device, a first end of the off-vehicle voltage conversion device is connected to the first battery, and a second end of the off-vehicle voltage conversion device is suitable for connecting to the off-vehicle load.

4. The vehicle-mounted power supply according to any one of claims 1 to 3, characterized in that: The first voltage conversion device comprises: a switch control circuit, wherein a first end of the switch control circuit is connected to the first battery; A voltage conversion circuit, wherein a first end of the voltage conversion circuit is connected to a second end of the switch control circuit, and a second end of the voltage conversion circuit is suitable for being connected to the external vehicle load.

5. The vehicle-mounted power supply according to any one of claims 1 to 3, characterized in that: The first battery is at least one of a storage battery, an iron battery and a super capacitor.

6. The vehicle-mounted power supply according to any one of claims 1 to 3, characterized in that: The vehicle-mounted power supply further includes a storage compartment, in which the first battery and the first 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 first 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: Power battery assembly; a second voltage conversion device, a first end of which is connected to the power battery assembly and is used to convert the voltage output by the power battery assembly; The vehicle-mounted power supply according to any one of claims 1 to 9, wherein the vehicle-mounted power supply is connected to the second end of the second voltage conversion device.

11. The battery system according to claim 10, characterized in that: The second voltage conversion device comprises: High voltage DC / low voltage DC, 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 vehicle power supply.

12. The battery system according to claim 10, characterized in that: The battery system further comprises: an AC / DC converter, wherein a first end of the AC / DC converter is connected to the power battery assembly, and a second end of the AC / DC converter is connected to an AC power load; The AC / DC conversion device comprises: a high-voltage DC / DC, a high-voltage AC / DC and an AC output assembly connected in sequence.

13. The battery system according to claim 12, 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 power battery assembly, 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, a second end of the power factor correction circuit is connected to a first end of the switch control circuit, and the switch control circuit is connected to the AC power load.

14. The battery system according to claim 10, characterized in that: The battery system further comprises: A second battery, wherein the first end of the second battery is connected to the second voltage conversion device, the second end of the second battery is suitable for connecting to a non-power load of the vehicle, and the second battery is used to power the non-power load of the vehicle when the on-board power supply is removed.

15. The battery system according to claim 10, characterized in that: The battery system further comprises: Auxiliary source DC, the first end of the auxiliary source DC is connected to the power battery assembly through a switch control circuit, and the second end of the auxiliary source DC is connected to the non-power load of the vehicle. When the on-board power supply is removed, the auxiliary source DC is used to power the non-power load of the vehicle.

16. The battery system according to claim 15, characterized in that: The auxiliary source DC includes: a third primary conversion circuit, a third isolation conversion circuit, and a third secondary conversion circuit; The first end of the third primary conversion circuit is connected to the power battery assembly, the second end of the third primary conversion circuit is connected to the first end of the third isolation conversion circuit, the second end of the third isolation conversion circuit is connected to the first end of the third secondary conversion circuit, and the second end of the third secondary conversion circuit is connected to the non-power load of the vehicle.

17. A vehicle, characterized in that: include: A battery system as claimed in any one of claims 10 to 16.

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