Vehicle energy storage power supply architecture, chassis, and vehicle

Abstract

The application discloses a vehicle energy storage power supply architecture, a chassis and a vehicle. At least part of energy storage devices in a voltage conversion circuit is reused, so that the energy storage power supply architecture of the vehicle saves cost without additional energy storage devices. The control circuit controls mutual charging of the energy storage battery and at least part of the energy storage devices in the voltage conversion circuit, the energy storage battery is heated in a pulse self-heating mode, and a heating film or a cooling liquid is replaced, so that the battery device is simpler and the arrangement and simplification of the battery system are facilitated.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a vehicle energy storage power architecture, chassis, and vehicle. Background Technology

[0002] As vehicle intelligence and chassis systems demand increasing power, current low-voltage systems in both fuel-powered and electric vehicles typically only provide 48V and 12V low-voltage power distribution, failing to provide the necessary AC power for AC loads within the vehicle. Utility Model Content

[0003] In view of the above problems, this application provides a vehicle energy storage power architecture, chassis and vehicle, which can solve the problem that current vehicle batteries cannot provide corresponding AC power to AC loads in the vehicle.

[0004] The first aspect of this application provides a vehicle energy storage power architecture, including:

[0005] Energy storage batteries;

[0006] The control circuit is connected to the energy storage battery;

[0007] A voltage conversion circuit is connected to the energy storage battery, the control circuit and the first power supply terminal, and is used to control the voltage conversion between the energy storage battery and the first power supply terminal.

[0008] The voltage conversion circuit and the control circuit are controlled by a controller to control the energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit to charge each other.

[0009] In the technical solution of this application embodiment, by reusing at least a portion of the energy storage devices in the voltage conversion circuit, it is possible to eliminate the need for additional energy storage devices, thereby saving the cost of the vehicle energy storage power architecture. The energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit are mutually charged by the control circuit. The energy storage battery can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0010] In some embodiments, the control circuit is used to convert the DC power provided by the energy storage battery into AC power and output it to the voltage conversion circuit.

[0011] In the technical solution of this application embodiment, the control circuit can convert the DC power provided by the energy storage battery into AC power and output it to the voltage conversion circuit, so that the control circuit can provide AC power to the outside. In addition, by reusing at least a part of the energy storage devices in the voltage conversion circuit, the cost of the vehicle energy storage power architecture can be saved. The control circuit controls the energy storage battery and at least a part of the energy storage devices in the voltage conversion circuit to charge each other. The energy storage battery can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0012] In some embodiments, the control circuit is further configured to convert the AC power provided by the voltage conversion circuit into DC power to charge the energy storage battery.

[0013] In the technical solution of this application embodiment, if the voltage conversion circuit provides AC power to the control circuit, the control circuit can convert the AC power provided by the voltage conversion circuit into DC power to charge the energy storage battery, thereby achieving the purpose of charging the energy storage battery. Furthermore, by reusing at least a portion of the energy storage devices in the voltage conversion circuit, the cost of the vehicle's energy storage power architecture can be saved. The control circuit controls the energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit to charge each other. Pulse self-heating can be used to heat the energy storage battery, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0014] In some embodiments, the control circuit includes a first half-bridge and a second half-bridge, wherein the first half-bridge and the second half-bridge are connected in parallel;

[0015] The first end of the energy storage device is connected to the midpoint of the first half-bridge, and the second end of the energy storage device is connected to the midpoint of the second half-bridge.

[0016] In the technical solution of this application embodiment, the first end of the energy storage device is connected to the midpoint of the first half-bridge, and the second end of the energy storage device is connected to the midpoint of the second half-bridge. By controlling the switching state of the first half-bridge and the second half-bridge, the DC power provided by the energy storage battery can charge the energy storage device. Then, by controlling the switching state of the first half-bridge and the second half-bridge, the energy storage device can charge the energy storage battery. Thus, the energy storage battery is heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0017] In some embodiments, the voltage conversion circuit includes a first transformer;

[0018] The energy storage circuit includes the winding of the first transformer, the first end of the primary winding of the first transformer is connected to the midpoint of the first half-bridge, and the second end of the primary winding of the first transformer is connected to the midpoint of the second half-bridge.

[0019] In the technical solution of this application embodiment, the first transformer in the voltage conversion circuit can perform voltage conversion processing on the input voltage. By reusing the winding of the first transformer in the voltage conversion circuit, there is no need to set up additional energy storage devices, saving the cost of the vehicle energy storage power architecture. The energy storage battery and the winding of the first transformer are mutually charged by the control circuit. The energy storage battery can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0020] In some embodiments, the voltage conversion circuit includes an energy storage inductor;

[0021] The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the midpoint of the second half-bridge.

[0022] In the technical solution of this application embodiment, by reusing the energy storage inductor in the voltage conversion circuit, there is no need to set up additional energy storage devices, saving the cost of vehicle energy storage power architecture. The energy storage battery and the energy storage inductor are mutually charged by the control circuit. The energy storage battery can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0023] In some embodiments, the vehicle energy storage power architecture further includes:

[0024] An energy storage circuit is connected to the control circuit, which is controlled by the controller to control the energy storage circuit and the energy storage battery to charge each other.

[0025] In the technical solution of this application embodiment, by additionally setting an energy storage circuit, the impact on the voltage conversion circuit can be reduced. Even when the voltage conversion circuit is working, the energy storage battery and the energy storage circuit can be mutually charged by the control circuit. The energy storage battery can be heated by pulse self-heating instead of heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0026] In some embodiments, the energy storage circuit includes:

[0027] An energy storage inductor is connected to the control circuit. The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the midpoint of the second half-bridge. The energy storage battery charges the energy storage inductor through the control circuit.

[0028] In the technical solution of this application embodiment, by additionally setting an energy storage inductor, the impact on the voltage conversion circuit can be reduced. Even when the voltage conversion circuit is working, the control circuit can control the energy storage battery and the energy storage inductor to charge each other. The energy storage battery can be heated by pulse self-heating instead of heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0029] In some embodiments, the energy storage circuit further includes an energy storage switch, which is connected in series with the energy storage inductor.

[0030] In the technical solution of this application embodiment, an additional energy storage inductor and energy storage switch are provided in the energy storage circuit. The connection state of the energy storage inductor is controlled by the energy storage switch, which can reduce the impact of the energy storage inductor on the voltage conversion circuit and the energy storage battery. When the energy storage battery does not need to be self-heated, the energy storage switch is controlled to be turned off. When the voltage conversion circuit is working, the control circuit can also control the energy storage battery and the energy storage inductor to charge each other. Pulse self-heating can be used to heat the energy storage battery, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0031] In some embodiments, the energy storage battery includes a first battery pack and a second battery pack, the first battery pack and the second battery pack are connected in series, and the control circuit is further configured to control the first battery pack and the second battery pack to charge each other through the energy storage device.

[0032] In the technical solution of this application embodiment, the first battery pack and the second battery pack in the energy storage battery are controlled by the control circuit to charge each other through the energy storage device, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0033] In some embodiments, the control circuit includes a first half-bridge;

[0034] The first end of the energy storage device is connected to the midpoint of the first half-bridge, and the second end of the energy storage device is connected to the common node of the first battery pack and the second battery pack.

[0035] In the technical solution of this application embodiment, by controlling the state of the first half-bridge, during the energy storage battery discharge stage, the first battery pack charges and stores energy through the first half-bridge to the energy storage device. Then, during the energy storage battery charging stage, the energy storage device charges the second battery pack through the first half-bridge. Then, by controlling the state of the first half-bridge, during the energy storage battery discharge stage, the second battery pack charges and stores energy through the first half-bridge to the energy storage device. During the energy storage battery charging stage, the energy storage device charges the first battery pack through the first half-bridge. This allows the first battery pack and the second battery pack in the energy storage battery to charge each other through the energy storage device, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0036] In some embodiments, the voltage conversion circuit includes a first transformer;

[0037] The energy storage device includes the winding of the first transformer. The first end of the primary winding of the first transformer is connected to the midpoint of the half-bridge of the first half-bridge, and the second end of the primary winding of the first transformer is connected to the common node of the first battery pack and the second battery pack.

[0038] In the technical solution of this application embodiment, the energy storage battery includes a first battery pack and a second battery pack connected in series. A first transformer in the multiplexed voltage conversion circuit is used as an energy storage device. The first end of the primary winding of the first transformer is connected to the midpoint of the half-bridge of the first half-bridge, and the second end of the primary winding of the first transformer is connected to the common node of the first battery pack and the second battery pack. During the discharge phase of the energy storage battery, by controlling the state of the first half-bridge, the first battery pack charges and stores energy through the primary winding of the first transformer. Then, during the charging phase of the energy storage battery, the primary winding of the first transformer charges the second battery pack through the first half-bridge. Then, by controlling the state of the first half-bridge, during the discharge phase of the energy storage battery, the second battery pack charges and stores energy through the energy storage circuit through the first half-bridge. During the charging phase of the energy storage battery, the energy storage circuit charges the first battery pack through the first half-bridge. Thus, the first battery pack and the second battery pack in the energy storage battery charge each other as energy storage devices, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0039] In some embodiments, the voltage conversion circuit includes an energy storage inductor;

[0040] The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the common node of the first battery pack and the second battery pack.

[0041] In the technical solution of this application embodiment, the energy storage inductor in the voltage conversion circuit is reused as an energy storage device. The first end of the energy storage inductor in the voltage conversion circuit is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor in the voltage conversion circuit is connected to the common node of the first battery pack and the second battery pack. During the energy storage battery discharge phase, by controlling the state of the first half-bridge, the first battery pack charges and stores energy through the energy storage inductor in the voltage conversion circuit via the first half-bridge. Then, during the energy storage battery charging phase, the energy storage inductor in the voltage conversion circuit charges the second battery pack through the first half-bridge. The system generates electricity and then controls the state of the first half-bridge. During the discharge phase of the energy storage battery, the second battery pack charges and stores energy through the energy storage inductor in the voltage conversion circuit via the first half-bridge. During the charging phase of the energy storage battery, the energy storage inductor in the voltage conversion circuit charges the first battery pack through the first half-bridge. This allows the first and second battery packs within the energy storage battery to charge each other through the energy storage inductor in the voltage conversion circuit. This pulse self-heating method is used to heat the energy storage battery, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0042] In some embodiments, the vehicle energy storage power architecture further includes:

[0043] An energy storage circuit is connected to the control circuit, which is controlled by the controller to control the first battery pack and the second battery pack to charge each other.

[0044] In the technical solution of this application embodiment, by additionally setting an energy storage circuit, the impact on the voltage conversion circuit can be reduced. Even when the voltage conversion circuit is working, the control circuit can control the first battery pack and the second battery pack in the energy storage battery to charge each other through the energy storage circuit, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0045] In some embodiments, the energy storage circuit includes:

[0046] An energy storage inductor is connected to the control circuit. The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the common node of the first battery pack and the second battery pack. The energy storage battery charges each other through the control circuit and the energy storage inductor.

[0047] In the technical solution of this application embodiment, by additionally setting an energy storage inductor, the impact on the voltage conversion circuit can be reduced. Even when the voltage conversion circuit is working, the control circuit can control the first battery pack and the second battery pack in the energy storage battery to charge each other through the energy storage inductor, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0048] In some embodiments, the energy storage circuit further includes an energy storage switch, which is connected in series with the energy storage inductor.

[0049] In the technical solution of this application embodiment, an additional energy storage inductor and energy storage switch are provided in the energy storage circuit. The connection state of the energy storage inductor is controlled by the energy storage switch, which can reduce the impact of the energy storage inductor on the voltage conversion circuit and the energy storage battery. When the energy storage battery does not need to be self-heated, the energy storage switch is controlled to be turned off. When the voltage conversion circuit is working, the first battery pack and the second battery pack in the energy storage battery are controlled to charge each other through the energy storage inductor, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0050] In some embodiments, the control circuit further includes a first half-bridge and a second half-bridge;

[0051] The first end of the energy storage circuit is connected to the midpoint of the first half-bridge, and the second end of the energy storage circuit is connected to the midpoint of the second half-bridge.

[0052] In the technical solution of this application embodiment, the control circuit further includes a first half-bridge and a second half-bridge. By setting the first end of the energy storage inductor to be connected to the midpoint of the first half-bridge and the second end of the energy storage inductor to be connected to the midpoint of the second half-bridge, the first battery pack and the second battery pack in the energy storage battery are controlled to charge each other with the energy storage inductor through the first half-bridge and the second half-bridge, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0053] In some embodiments, the energy storage circuit further includes:

[0054] Energy storage inductor, wherein the energy storage inductor is a common-mode inductor;

[0055] The control circuit also includes a first half-bridge and a second half-bridge;

[0056] The first end of the common-mode inductor is connected to the midpoint of the first half-bridge, the second end of the common-mode inductor is connected to the midpoint of the second half-bridge, and the third and fourth ends of the common-mode inductor are connected to the common node of the first battery pack and the second battery pack.

[0057] In the technical solution of this application embodiment, the control circuit further includes a first half-bridge and a second half-bridge. By setting the first end of the common-mode inductor to be connected to the midpoint of the first half-bridge, the second end of the common-mode inductor to be connected to the midpoint of the second half-bridge, and the third and fourth ends of the common-mode inductor to be connected to the common node of the first battery pack and the second battery pack, the first battery pack and the second battery pack in the energy storage battery are controlled to charge each other through the first half-bridge and the second half-bridge, thereby heating the energy storage battery by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0058] The voltage conversion circuit further includes:

[0059] The first transformer is connected to the control circuit;

[0060] The first rectifier-inverter unit is connected to the first transformer and is used to convert the AC power output by the first transformer into DC power.

[0061] In the technical solution of this application embodiment, the DC side of the control circuit is connected to the energy storage battery. The first end of the primary winding of the first transformer is connected to the midpoint of the first half-bridge of the control circuit, and the second end of the primary winding of the first transformer is connected to the midpoint of the second half-bridge of the control circuit. By controlling the switching states of the first half-bridge and the second half-bridge in the control circuit, the first battery pack can charge the second battery pack through the primary winding of the first transformer, and the second battery pack can charge the first battery pack through the primary winding of the first transformer, thereby performing pulse self-heating of the energy storage battery. This not only reduces costs but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system. On the other hand, the control circuit can also convert the AC power on its AC side into DC power, which is then output to the energy storage battery via the battery management circuit. Alternatively, it can convert the DC power on its DC side into AC power and output it to the first transformer, which then boosts the voltage to obtain the required power frequency AC power and outputs it to the first power supply terminal. This allows the energy storage battery to provide AC power to the vehicle through the battery management circuit and voltage conversion circuit, preventing the power battery pack from providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery and the power battery pack to respectively supply power to the vehicle's electrical load and power load. Furthermore, the first power supply terminal can be connected to an AC charging pile, allowing the AC charging pile to charge the energy storage battery via the voltage conversion circuit.

[0062] In some embodiments, the voltage conversion circuit further includes: a second rectifier-inverter unit connected between the first rectifier-inverter unit and the first power supply terminal, which converts the DC power into AC power and outputs it to the first power supply terminal.

[0063] In the technical solution of this application embodiment, by setting a first rectifier-inverter unit and a second rectifier-inverter unit on the secondary winding of the first transformer, the first rectifier-inverter unit can convert the AC power output by the first transformer into DC power, and the second rectifier-inverter unit can convert the DC power into AC power and output it to the first power supply terminal, so that the first power supply terminal provides AC power to the outside, which is beneficial to maintaining the voltage stability of the first power supply terminal.

[0064] In some embodiments, the vehicle energy storage power architecture further includes:

[0065] A battery management circuit, connected to the energy storage battery, is used to control the charging and discharging process of the energy storage battery.

[0066] In some embodiments, at least two of the battery management circuit, the control circuit, and the voltage conversion circuit are controlled by the same controller.

[0067] In the technical solution of this application embodiment, the battery management circuit and the control circuit, as well as at least two of the control circuits, are controlled by the same controller. By deeply integrating the control motherboard of the battery management circuit, the voltage conversion function, and the self-heating function control circuit, the battery management circuit, the voltage conversion function, and the self-heating function control circuit can share the same main control chip (i.e., controller). The controller integrates the functions of managing the battery charging and discharging process, voltage conversion, and self-heating control, thereby reducing the volume occupied by the power system inside the vehicle.

[0068] In some embodiments, the voltage conversion circuit further includes: an oscillating inductor unit; the first end of the secondary winding of the first transformer is connected to the midpoint of the first half-bridge of the first rectifier-inverter unit via the oscillating inductor unit and the oscillating capacitor unit in sequence, and the second end of the secondary winding of the first transformer is connected to the midpoint of the second half-bridge of the first rectifier-inverter unit.

[0069] In some embodiments, the voltage conversion circuit further includes an oscillating capacitor unit connected in series with the oscillating inductor unit.

[0070] In the technical solution of this application embodiment, the first rectifier-inverter unit and the second rectifier-inverter unit are controlled by a controller. The oscillating inductor unit and the oscillating capacitor unit can form a resonant circuit. By connecting the oscillating inductor unit and the oscillating capacitor unit in series between the first end of the secondary winding of the first transformer and the midpoint of the first half-bridge of the first rectifier-inverter unit, a half-bridge series LC resonant circuit can be formed. The LC resonant circuit is used to realize zero-voltage switching and zero-current switching. The combination of the oscillating inductor unit, the oscillating capacitor unit and the first transformer can be used to convert the low-voltage AC power of the secondary winding of the first transformer into high-voltage AC power, and then rectified by the full-bridge unit to obtain the corresponding DC power. The second rectifier-inverter unit converts the DC voltage into the corresponding AC power, so that the energy storage battery can realize the AC power supply of the vehicle through the voltage conversion circuit, avoiding the power battery pack providing AC power to the vehicle's internal components and affecting the vehicle's power output. The energy storage battery and the power battery pack respectively perform the power supply of the vehicle's electrical load and the vehicle's power load. Furthermore, the first power supply terminal can also be connected to an AC charging pile, so that the AC charging pile charges the energy storage battery through the voltage conversion circuit and the inverter circuit.

[0071] In some embodiments, the vehicle energy storage power architecture further includes a buffer capacitor connected in parallel with the first power supply terminal.

[0072] In the technical solution of this application embodiment, the buffer capacitor helps to maintain the voltage stability of the first power supply terminal and reduce the mutual influence between the voltage conversion circuit and the first power supply terminal.

[0073] In some embodiments, the vehicle energy storage power architecture further includes: a noise suppression inductor; the noise suppression inductor is connected between the first power supply terminal and the AC side of the second rectifier-inverter unit.

[0074] In the technical solution of this application embodiment, the second rectifier inverter unit, the noise suppression inductor and the buffer capacitor can form a PFC circuit. The PFC circuit can dynamically adjust the input current waveform to make it in phase with the voltage, significantly improve the power factor and reduce harmonics in the circuit.

[0075] In some embodiments, the vehicle energy storage power architecture further includes:

[0076] The first energy storage circuit connects the two bus connection nodes of the first rectifier-inverter unit and the second rectifier-inverter unit.

[0077] In the technical solution of this application embodiment, the two ends of the first energy storage circuit are connected to the DC side of the first rectifier-inverter unit and the DC side of the second rectifier-inverter unit. The first rectifier-inverter unit and the second rectifier-inverter unit are controlled by a controller. When the energy storage battery is working in AC power supply mode, the controller controls the control circuit to convert the DC power output by the energy storage battery into low-voltage AC power. Then, the first transformer steps up the voltage, and the first rectifier-inverter unit rectifies the voltage to obtain high-voltage DC power output to the two ends of the first energy storage circuit. Finally, the second rectifier-inverter unit converts the high-voltage DC power into corresponding AC power output to the first power supply terminal. This allows the energy storage battery to realize AC power supply for the vehicle through the voltage conversion circuit, avoiding the power battery pack providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery and the power battery pack to respectively perform power supply for the vehicle's electrical load and power load. Furthermore, in the mode where the first power supply terminal is connected to an AC charging pile to charge the energy storage battery, the inverter circuit can boost the voltage to obtain high-voltage DC power output to both ends of the first energy storage circuit. Then, the corresponding low-voltage DC power is obtained through the first rectifier-inverter unit, the first transformer, and the control circuit to charge the energy storage battery. This allows the AC charging pile to directly charge the energy storage battery through the voltage conversion circuit, realizing independent charging of the energy storage battery and improving the charging efficiency of the energy storage battery.

[0078] In some embodiments, the vehicle energy storage power architecture further includes:

[0079] The second power supply terminal is connected to the battery management circuit and is used to supply power to the connected DC load according to the DC power output by the battery management circuit, or to charge the energy storage battery according to the connected DC power through the battery management circuit.

[0080] In some embodiments, the controller is further configured to control the energy storage battery to charge the energy storage device via the control circuit in a first self-heating mode, and to control the energy storage device to charge the energy storage battery via the voltage conversion circuit, so as to enable the energy storage battery to self-heat.

[0081] In the technical solution of this application embodiment, when the temperature of the energy storage battery is lower than the first preset temperature threshold, the controller can control the control circuit to work in the first self-heating mode, so that the energy storage battery can share the energy storage device in the voltage conversion circuit. The energy storage battery charges the energy storage device through the control circuit, and the energy storage device charges the energy storage battery through the voltage conversion circuit, so that the energy storage battery self-heats. The energy storage battery is thermally managed by pulse self-heating, which not only reduces costs, but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0082] In some embodiments, the controller is further configured to control the first battery pack and the second battery pack to alternately generate pulse currents through the energy storage device in a second self-heating mode, so as to enable the energy storage battery to self-heat.

[0083] In the technical solution of this application embodiment, when the temperature of the energy storage battery is less than the first preset temperature threshold, the controller can control the control circuit to work in the second self-heating mode, so that the first battery pack and the second battery pack can alternately output pulse current through the inductor circuit, and use pulse self-heating to perform thermal management of the energy storage battery. This not only reduces costs, but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0084] In some embodiments, the controller is further configured to control the energy storage battery to output AC power to the first power supply terminal via the voltage conversion circuit in a first power supply mode.

[0085] In some embodiments, the controller is further configured to control the energy storage battery to output DC power to the second power supply terminal via the battery management circuit in a second power supply mode.

[0086] In the technical solution of this application embodiment, in the first power supply mode, the controller controls the control circuit to convert the DC power output from the energy storage battery into low-voltage AC power, which is then stepped up by the first transformer and rectified by the first rectifier-inverter unit to obtain high-voltage DC power output to both ends of the first energy storage circuit. Finally, the high-voltage DC power is converted into corresponding AC power output to the first power supply end by the second rectifier-inverter unit. This allows the energy storage battery to realize AC power supply for the vehicle through the voltage conversion circuit, avoiding the power battery pack providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery and the power battery pack to respectively perform the power supply for the vehicle's electrical load and the vehicle's power load.

[0087] In some embodiments, the controller is further configured to, in a first charging mode, control the voltage conversion circuit and the inverter circuit to convert the AC power from the first power supply terminal into DC power, and charge the energy storage battery via the battery management circuit.

[0088] In the technical solution of this application embodiment, in the first charging mode, the second rectifier-inverter unit circuit is used to boost the voltage to obtain high-voltage DC power output to both ends of the first energy storage circuit. Then, the corresponding low-voltage DC power is obtained through the first rectifier-inverter unit, the first transformer and the control circuit in sequence to charge the energy storage battery. This allows the AC charging pile to directly charge the energy storage battery through the voltage conversion circuit, realize independent charging of the energy storage battery and improve the charging efficiency of the energy storage battery.

[0089] In some embodiments, the controller is further configured to control the first battery pack and the second battery pack to perform power balancing through the voltage conversion circuit in balancing mode, so as to reduce the power difference between the first battery pack and the second battery pack.

[0090] In the technical solution of this application embodiment, when the difference in charge level between the first battery pack and the second battery pack is greater than a first preset charge threshold, the controller can control the control circuit to operate in a corresponding switching state, so that the battery pack with higher charge level in the first battery pack and the second battery pack charges the battery pack with lower charge level, thereby achieving charge balance between the first battery pack and the second battery pack. Furthermore, after the control circuit is disconnected and left idle for a first preset time, the controller again detects the difference in charge level between the first battery pack and the second battery pack. If the difference in charge level between the first battery pack and the second battery pack is still greater than the first preset charge threshold, the controller again selects the battery pack with higher charge level to charge the battery pack with lower charge level, until the difference in charge level between the first battery pack and the second battery pack is less than a second preset charge threshold. This second preset charge threshold is less than the first preset charge threshold, and the second preset charge threshold can be set to be less than 1% of the first battery pack charge level.

[0091] A second aspect of this application provides a chassis including a vehicle energy storage power architecture as described in any of the foregoing embodiments.

[0092] In the technical solution of this application embodiment, by integrating the vehicle energy storage power architecture described in any of the above embodiments into the vehicle chassis, the chassis can supply power to the functional loads and / or drive loads in the vehicle. By reusing at least a portion of the energy storage devices in the voltage conversion circuit, there is no need to set up additional energy storage devices, saving the cost of the vehicle energy storage power architecture. The energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit are mutually charged by the control circuit. The energy storage battery can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0093] A third aspect of this application provides a vehicle including a vehicle energy storage power architecture as described in any of the above embodiments; or including a chassis as described in the above embodiments.

[0094] In the technical solution of this application embodiment, a vehicle energy storage power architecture is provided inside the vehicle, which can supply power to the functional loads inside the vehicle. These functional loads can be AC ​​loads, and the power battery pack can supply power to the vehicle's power loads. In the vehicle energy storage power architecture, by reusing at least a portion of the energy storage devices in the voltage conversion circuit, it is possible to eliminate the need for additional energy storage devices, thus saving the cost of the vehicle energy storage power architecture. The control circuit controls the mutual charging between the energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit. Pulse self-heating can be used to heat the energy storage battery, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0095] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0096] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0097] Figure 1 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0098] Figure 2 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0099] Figure 3 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0100] Figure 4 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0101] Figure 5 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0102] Figure 6 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0103] Figure 7 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0104] Figure 8 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0105] Figure 9 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0106] Figure 10 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0107] Figure 11 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0108] Figure 12 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0109] Figure 13 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0110] Figure 14 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0111] Figure 15 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0112] Figure 16 A schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application;

[0113] Figure 17 This is a schematic diagram of one possible structure of the vehicle energy storage power architecture provided in an embodiment of this application. Detailed Implementation

[0114] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0115] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0116] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0117] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The phrase "second connection port" at various locations in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0118] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0119] In the description of the embodiments of this application, the term "multiple frames" refers to two or more (including two).

[0120] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0121] To address the aforementioned technical problems, this application provides a vehicle energy storage power architecture, see [link to relevant documentation]. Figure 1 As shown, the vehicle energy storage power architecture in this embodiment includes: an energy storage battery 100, a control circuit 300, and a voltage conversion circuit 400. The control circuit 300 is connected to the energy storage battery 100. The voltage conversion circuit 400 is connected to the energy storage battery 100, the control circuit 300, and a first power supply terminal 610. The voltage conversion circuit 400 is used to control the voltage conversion between the control circuit 300 and the first power supply terminal 610. The voltage conversion circuit 400 and the control circuit 300 are controlled by a controller 700 to control the energy storage battery 100 and at least a portion of the energy storage devices 401 in the voltage conversion circuit 400 to charge each other.

[0122] In this embodiment, by reusing at least a portion of the energy storage devices 401 in the voltage conversion circuit 400, it is possible to eliminate the need for additional energy storage devices 401, thereby saving the cost of the vehicle's energy storage power architecture. The control circuit 300 controls the energy storage battery 100 to charge each other with at least a portion of the energy storage devices 401 in the voltage conversion circuit 400. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0123] In some embodiments, combined with Figure 1 As shown, the control circuit 300 can convert the DC power provided by the energy storage battery 100 into AC power and output it to the voltage conversion circuit 400.

[0124] In this embodiment, the control circuit 300 converts the DC power provided by the energy storage battery 100 into AC power and outputs it to the voltage conversion circuit 400, thereby providing AC power to the outside world. Furthermore, by reusing at least a portion of the energy storage devices 401 in the voltage conversion circuit 400, the cost of the vehicle's energy storage power architecture can be saved. The control circuit 300 controls the energy storage battery 100 and at least a portion of the energy storage devices 401 in the voltage conversion circuit 400 to charge each other. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0125] In some embodiments, combined with Figure 1 As shown, the control circuit 300 can also convert the AC power provided by the voltage conversion circuit 400 into DC power to charge the energy storage battery 100.

[0126] In this embodiment, if the voltage conversion circuit 400 provides AC power to the control circuit 300, the control circuit 300 can convert the AC power provided by the voltage conversion circuit 400 into DC power to charge the energy storage battery 100, thereby achieving the charging purpose of the energy storage battery 100. Furthermore, by reusing at least a portion of the energy storage devices 401 in the voltage conversion circuit 400, the cost of the vehicle's energy storage power architecture can be saved. The control circuit 300 controls the energy storage battery 100 to charge each other with at least a portion of the energy storage devices 401 in the voltage conversion circuit 400. Pulse self-heating can be used to heat the energy storage battery 100, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0127] In some embodiments, see Figure 2As shown, the control circuit 300 includes a first half-bridge 310 and a second half-bridge 320, which are connected in parallel; the first end of the energy storage device 401 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage device 401 is connected to the midpoint of the second half-bridge 320.

[0128] In this embodiment, the first end of the energy storage device 401 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage device 401 is connected to the midpoint of the second half-bridge 320. By controlling the switching states of the first half-bridge 310 and the second half-bridge 320, the DC power provided by the energy storage battery 100 can charge the energy storage device 401. Then, by controlling the switching states of the first half-bridge 310 and the second half-bridge 320, the energy storage device 401 can charge the energy storage battery 100. This allows the energy storage battery 100 to be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0129] In some embodiments, see Figure 3 As shown, the voltage conversion circuit 400 includes a first transformer T1; the energy storage device 401 includes a winding of the first transformer T1, the first end of the primary winding of the first transformer T1 is connected to the midpoint of the half-bridge of the first half-bridge 310, and the second end of the primary winding of the first transformer T1 is connected to the midpoint of the half-bridge of the second half-bridge 320.

[0130] In this embodiment, the first transformer T1 in the voltage conversion circuit 400 can perform voltage conversion processing on the input voltage. By reusing the winding of the first transformer T1 in the voltage conversion circuit 400, there is no need to set up an additional energy storage device 401, saving the cost of the vehicle energy storage power architecture. The control circuit 300 controls the energy storage battery 100 and the winding of the first transformer T1 to charge each other. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0131] In some embodiments, see Figure 4 As shown, the voltage conversion circuit 400 includes an energy storage inductor L4; the first end of the energy storage inductor L4 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L4 is connected to the midpoint of the second half-bridge 320.

[0132] In this embodiment, by reusing the energy storage inductor L4 in the voltage conversion circuit 400, there is no need to set up an additional energy storage device 401, saving the cost of the vehicle energy storage power architecture. The control circuit 300 controls the energy storage battery 100 and the energy storage inductor L4 to charge each other. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0133] In some embodiments, see Figure 5 As shown, the vehicle energy storage power architecture also includes: an energy storage circuit 200, which is connected to a control circuit 300. The control circuit 300 is controlled by a controller 700 to control the energy storage circuit 200 and the energy storage battery 100 to charge each other.

[0134] In this embodiment, by additionally setting the energy storage circuit 200, the impact on the voltage conversion circuit 400 can be reduced. Even when the voltage conversion circuit 400 is working, the control circuit 300 can control the energy storage battery 100 and the energy storage circuit 200 to charge each other. The energy storage battery 100 can be heated by pulse self-heating instead of heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0135] In some embodiments, see Figure 5 As shown, the energy storage circuit 200 includes: an energy storage inductor L3, which is connected to the control circuit 300. The first end of the energy storage inductor L3 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L3 is connected to the midpoint of the second half-bridge 320. The energy storage battery 100 charges the energy storage inductor L3 through the control circuit 300.

[0136] In this embodiment, by additionally setting the energy storage inductor L3, the impact on the voltage conversion circuit 400 can be reduced. Even when the voltage conversion circuit 400 is working, the control circuit 300 can control the energy storage battery 100 and the energy storage inductor L3 to charge each other. The energy storage battery 100 can be heated by pulse self-heating instead of heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0137] In some embodiments, see Figure 5 As shown, the energy storage circuit 200 also includes an energy storage switch K3, which is connected in series with the energy storage inductor L3.

[0138] In this embodiment, an additional energy storage inductor L3 and an energy storage switch K3 are provided in the energy storage circuit 200. The connection state of the energy storage inductor L3 is controlled by the energy storage switch K3, which can reduce the impact of the energy storage inductor L3 on the voltage conversion circuit 400 and the energy storage battery 100. When the energy storage battery 100 does not need to be self-heated, the energy storage switch K3 is turned off. When the voltage conversion circuit 400 is working, the control circuit 300 can also control the energy storage battery 100 and the energy storage inductor L3 to charge each other. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0139] In some embodiments, see Figure 6 As shown, the first half-bridge 310 includes a ninth switch Q9 and a tenth switch Q10, and the common node of the ninth switch Q9 and the tenth switch Q10 serves as the midpoint of the first half-bridge 310.

[0140] In some embodiments, see Figure 6 As shown, the second half-bridge 320 includes an eleventh switch Q11 and a twelfth switch Q12, and the common node of the eleventh switch Q11 and the twelfth switch Q12 serves as the midpoint of the second half-bridge 320.

[0141] In some embodiments, see Figure 6 As shown, the control circuit 300 also includes diodes D11, D12, D13, and D14. Diode D11 is connected in reverse parallel with the ninth switch Q9, diode D12 is connected in reverse parallel with the tenth switch, diode D13 is connected in reverse parallel with the eleventh switch Q11, and diode D14 is connected in reverse parallel with the twelfth switch Q12.

[0142] In this embodiment, the ninth switch Q9, the tenth switch Q10, the eleventh switch Q11, and the twelfth switch Q12 can be N-type IGBTs or N-type MOSFETs. By placing corresponding diodes between the source and drain of the ninth switch Q9, the tenth switch Q10, the eleventh switch Q11, and the twelfth switch Q12, with the cathode of the diode connected to the drain and the anode of the diode connected to the source, the risk of backflow that may occur during low-current freewheeling can be reduced.

[0143] In some embodiments, see Figure 7 As shown, the energy storage battery 100 includes a first battery pack B1 and a second battery pack B2, with the first battery pack B1 and the second battery pack B2 connected in series. The control circuit 300 is also used to control the first battery pack B1 and the second battery pack B2 to charge each other through the energy storage device 401.

[0144] In this embodiment, the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 are controlled by the control circuit 300 to charge each other through the energy storage device 401, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0145] In some embodiments, see Figure 8 As shown, the control circuit 300 includes a first half-bridge 310; the first end of the energy storage device 401 is connected to the midpoint of the half-bridge of the first half-bridge 310, and the second end of the energy storage device 401 is connected to the common node of the first battery pack B1 and the second battery pack B2.

[0146] In this embodiment, by controlling the state of the first half-bridge 310, during the discharge phase of the energy storage battery 100, the first battery pack B1 charges and stores energy in the energy storage device 401 via the first half-bridge 310. Then, during the charging phase of the energy storage battery 100, the energy storage device 401 charges the second battery pack B2 via the first half-bridge 310. Then, by controlling the state of the first half-bridge 310, during the discharge phase of the energy storage battery 100, the second battery pack B2 charges and stores energy in the energy storage device 401 via the first half-bridge 310. During the charging phase of the energy storage battery 100, the energy storage device 401 charges the first battery pack B1 via the first half-bridge 310. This allows the first battery pack B1 and the second battery pack B2 within the energy storage battery 100 to charge each other via the energy storage device 401, thereby heating the energy storage battery 100 using pulse self-heating, replacing heating film heating or coolant heating. This simplifies the battery device and facilitates the layout and simplification of the low-voltage power distribution system.

[0147] In some embodiments, see Figure 8 As shown, the voltage conversion circuit 400 includes a first transformer T1; the energy storage device 401 includes a winding of the first transformer T1, the first end of the primary winding of the first transformer T1 is connected to the midpoint of the half-bridge of the first half-bridge 310, and the second end of the primary winding of the first transformer T1 is connected to the common node of the first battery pack B1 and the second battery pack B2.

[0148] In this embodiment, the energy storage battery 100 includes a first battery pack B1 and a second battery pack B2 connected in series. A first transformer T1 in the multiplexed voltage conversion circuit 400 serves as an energy storage device 401. The first end of the primary winding of the first transformer T1 is connected to the midpoint of the half-bridge of the first half-bridge 310, and the second end of the primary winding of the first transformer T1 is connected to the common node of the first battery pack B1 and the second battery pack B2. During the discharge phase of the energy storage battery 100, by controlling the state of the first half-bridge 310, the first battery pack B1 charges and stores energy in the primary winding of the first transformer T1 via the first half-bridge 310. Then, during the charging phase of the energy storage battery 100, the primary winding of the first transformer T1... The side winding charges the second battery pack B2 via the first half-bridge 310, and then controls the state of the first half-bridge 310. During the discharge phase of the energy storage battery 100, the second battery pack B2 charges and stores energy in the energy storage circuit 200 via the first half-bridge 310. During the charging phase of the energy storage battery 100, the energy storage circuit 200 charges the first battery pack B1 via the first half-bridge 310. This allows the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 to charge each other via the energy storage device 401, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0149] In some embodiments, see Figure 9 As shown, the voltage conversion circuit 400 includes an energy storage inductor L4; the first end of the energy storage inductor L4 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L4 is connected to the common node of the first battery pack B1 and the second battery pack B2.

[0150] In this embodiment, the energy storage inductor L4 in the voltage conversion circuit 400 is used as the energy storage device 401. The first end of the energy storage inductor L4 in the voltage conversion circuit 400 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L4 in the voltage conversion circuit 400 is connected to the common node of the first battery pack B1 and the second battery pack B2. During the discharge phase of the energy storage battery 100, by controlling the state of the first half-bridge 310, the first battery pack B1 charges and stores energy in the energy storage inductor L4 in the voltage conversion circuit 400 through the first half-bridge 310. Then, during the charging phase of the energy storage battery 100, the energy storage inductor L4 in the voltage conversion circuit 400 charges and stores energy in the second battery pack B2 through the first half-bridge 310. The system charges the battery and then controls the state of the first half-bridge 310. During the discharge phase of the energy storage battery 100, the second battery pack B2 charges and stores energy through the energy storage inductor L4 in the voltage conversion circuit 400 via the first half-bridge 310. During the charging phase of the energy storage battery 100, the energy storage inductor L4 in the voltage conversion circuit 400 charges the first battery pack B1 via the first half-bridge 310. This allows the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 to charge each other through the energy storage inductor L4 in the voltage conversion circuit 400. This heats the energy storage battery 100 using pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0151] In some embodiments, see Figure 10 As shown, the vehicle energy storage power architecture also includes an energy storage circuit 200, which is connected to a control circuit 300. The control circuit 300 is controlled by a controller 700 to control the first battery pack B1 and the second battery pack B2 to charge each other.

[0152] In this embodiment, by additionally setting the energy storage circuit 200, the impact on the voltage conversion circuit 400 can be reduced. Even when the voltage conversion circuit 400 is working, the control circuit 300 can control the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 to charge each other through the energy storage circuit 200, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0153] In some embodiments, see Figure 10 As shown, the energy storage circuit 200 includes: an energy storage inductor L3, which is connected to the control circuit 300. The first end of the energy storage inductor L3 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L3 is connected to the common node of the first battery pack B1 and the second battery pack B2. The energy storage battery 100 charges the energy storage inductor L3 through the control circuit 300.

[0154] In this embodiment, by additionally setting the energy storage inductor L3, the impact on the voltage conversion circuit 400 can be reduced. Even when the voltage conversion circuit 400 is working, the control circuit 300 can control the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 to charge each other through the energy storage inductor L3, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0155] In some embodiments, see Figure 11 As shown, the energy storage circuit 200 also includes an energy storage switch K3, which is connected in series with the energy storage inductor L3.

[0156] In this embodiment, an additional energy storage inductor L3 and an energy storage switch K3 are provided in the energy storage circuit 200. The connection state of the energy storage inductor L3 is controlled by the energy storage switch K3, which can reduce the impact of the energy storage inductor L3 on the voltage conversion circuit 400 and the energy storage battery 100. When the energy storage battery 100 does not need self-heating, the energy storage switch K3 is turned off. When the voltage conversion circuit 400 is working, the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 are controlled to charge each other through the energy storage inductor L3, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0157] In some embodiments, see Figure 12 As shown, the control circuit 300 also includes a first half-bridge 310 and a second half-bridge 320; the first end of the energy storage circuit 200 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage circuit 200 is connected to the midpoint of the second half-bridge 320.

[0158] In this embodiment, the control circuit 300 further includes a first half-bridge 310 and a second half-bridge 320. The first end of the energy storage circuit 200 is connected to the midpoint of the first half-bridge 310, and the second end of the energy storage inductor L3 is connected to the midpoint of the second half-bridge 320. The first battery pack B1 and the second battery pack B2 in the energy storage battery 100 are controlled to charge each other with the energy storage circuit 200 through the first half-bridge 310 and the second half-bridge 320, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0159] In some embodiments, see Figure 13As shown, the energy storage circuit 200 further includes: an energy storage inductor L3, which is a common-mode inductor; the control circuit 300 further includes a first half-bridge 310 and a second half-bridge 320; the first end of the common-mode inductor is connected to the midpoint of the first half-bridge 310, the second end of the common-mode inductor is connected to the midpoint of the second half-bridge 320, and the third and fourth ends of the common-mode inductor are connected to the common node of the first battery pack B1 and the second battery pack B2.

[0160] In this embodiment, the control circuit 300 further includes a first half-bridge 310 and a second half-bridge 320. By setting the first end of the common-mode inductor to be connected to the midpoint of the first half-bridge 310, the second end of the common-mode inductor to be connected to the midpoint of the second half-bridge 320, and the third and fourth ends of the common-mode inductor to be connected to the common node of the first battery pack B1 and the second battery pack B2, the first battery pack B1 and the second battery pack B2 in the energy storage battery 100 are controlled to charge each other through the first half-bridge 310 and the second half-bridge 320, thereby heating the energy storage battery 100 by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0161] In some embodiments, see Figure 14 As shown, the voltage conversion circuit 400 also includes: a first transformer T1 and a first rectifier-inverter unit 510. The first transformer T1 is connected to the control circuit 300. The first rectifier-inverter unit 510 is connected to the first transformer T1 and is used to convert the AC power output by the first transformer T1 into DC power.

[0162] In this embodiment, the DC side of the control circuit 300 is connected to the energy storage battery 100. The first end of the primary winding of the first transformer T1 is connected to the midpoint of the first half-bridge 310 of the control circuit 300, and the second end of the primary winding of the first transformer T1 is connected to the midpoint of the second half-bridge 320 of the control circuit 300. By controlling the switching states of the first half-bridge 310 and the second half-bridge 320 in the control circuit 300, the first battery pack B1 can charge the second battery pack B2 through the primary winding of the first transformer T1, and the second battery pack B2 can charge the first battery pack B1 through the primary winding of the first transformer T1, thereby performing pulse self-heating on the energy storage battery 100. This not only reduces costs but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system. On the other hand, the control circuit 300 can also convert the AC power on its AC side into DC power, which is then output to the energy storage battery 100 via the battery management circuit 630. Alternatively, it can convert the DC power on its DC side into AC power and output it to the first transformer T1. The first transformer T1 then boosts the DC power to obtain the required power frequency AC power, which is then output to the first power supply terminal 610. This allows the energy storage battery 100 to provide AC power to the vehicle through the battery management circuit 630 and the voltage conversion circuit 400, preventing the power battery pack from providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery 100 and the power battery pack to respectively supply power to the vehicle's electrical load and power load. Furthermore, the first power supply terminal 610 can be connected to an AC charging pile, allowing the AC charging pile to charge the energy storage battery 100 via the voltage conversion circuit 400.

[0163] In some embodiments, see Figure 14 As shown, the voltage conversion circuit 400 further includes a second rectifier-inverter unit 520, which is connected between the first rectifier-inverter unit 510 and the first power supply terminal 610, converting DC power into AC power and outputting it to the first power supply terminal 610.

[0164] In this embodiment of the application, by setting a first rectifier-inverter unit 510 and a second rectifier-inverter unit 520 on the secondary winding of the first transformer T1, the first rectifier-inverter unit 510 can convert the AC power output from the first transformer T1 into DC power, and the second rectifier-inverter unit 520 can convert the DC power into AC power and output it to the first power supply terminal 610, so that the first power supply terminal 610 can provide AC power to the outside, which is beneficial to maintaining the voltage stability of the first power supply terminal 610.

[0165] In some embodiments, see Figure 15As shown, the first rectifier-inverter unit 510 includes a fifth switch Q5, a sixth switch Q6, a seventh switch Q7, and an eighth switch Q8, which together form a full-bridge topology circuit.

[0166] In some embodiments, see Figure 15 As shown, the second rectifier-inverter unit 520 includes a first switch Q1, a second switch Q2, a third switch Q3, and a fourth switch Q4, which together form a full-bridge topology circuit.

[0167] In some embodiments, see Figure 14 As shown, the vehicle energy storage power architecture also includes a battery management circuit 630, which is connected to the energy storage battery 100 and is used to control the charging and discharging process of the energy storage battery 100.

[0168] In some embodiments, at least two of the voltage conversion circuit 400, battery management circuit 630, and control circuit 300 are controlled by the same controller 700.

[0169] In the technical solution of this application embodiment, at least two of the voltage conversion circuit 400, battery management circuit 630, and control circuit 300 are controlled by the same controller 700. By deeply integrating the battery management function, voltage conversion function, and self-heating function, the voltage conversion circuit 400, battery management circuit 630, and control circuit 300 can share the same main control chip (i.e., controller 700). The controller 700 integrates the functions of managing the battery charging and discharging process, voltage conversion, and self-heating control, thereby reducing the volume occupied by the power system inside the vehicle.

[0170] In some embodiments, the voltage conversion circuit 400 and the battery management circuit 630 include the same controller, which controls the charging and discharging process and the inverter process of the low-voltage battery.

[0171] In this embodiment, the voltage conversion circuit 400 and the battery management circuit 630 include the same controller. By deeply integrating the control motherboard of the low-voltage battery management system (including the battery management circuit 630) and the DC-to-AC inverter system (including the voltage conversion circuit 400), the low-voltage battery management system and the DC-to-AC inverter system can share the same main control chip (i.e., controller). The controller integrates the function of managing the charging and discharging process of the low-voltage battery, as well as the function of converting the DC power output from the battery management circuit 630 into AC power and outputting it. Through the low-voltage power supply integrated architecture in this embodiment, the low-voltage battery can provide both DC and AC power, which is suitable not only for electric vehicles but also for fuel vehicles. Furthermore, by integrating the controller to manage the charging and discharging functions of both DC and AC power, the battery device is simpler, which is beneficial for the layout and simplification of the low-voltage battery management system and the DC-to-AC inverter system, and reduces the volume occupied by the power system inside the vehicle.

[0172] In some embodiments, see Figure 16 As shown, the battery management circuit 630 includes a first bidirectional switch unit K41 and a second bidirectional switch unit K42. The first bidirectional switch unit K41 and the second bidirectional switch unit K42 are controlled by the controller 700. The controller 700 can perform basic battery management on the energy storage battery 100 by controlling the switching states of the first bidirectional switch unit K41 and the second bidirectional switch unit K42, combined with voltage, current, temperature and interactive commands.

[0173] In some embodiments, combined with Figure 14 and Figure 16 , Figure 17 As shown, the architecture in this embodiment can provide two battery heating methods, allowing for a choice between high performance and low performance, taking into account cost constraints, space constraints, and performance requirements.

[0174] In this embodiment, the first bidirectional switching unit K41, the current-limiting resistor unit R1, the first battery pack B1, the second battery pack B2, the second bidirectional switching unit K42, the ninth switch Q9, the eleventh switch Q11, the tenth switch Q10, the twelfth switch Q12, the first transformer T1, the energy storage switch K4, the energy storage inductor L4, and the second energy storage circuit C4 constitute the first part of the oscillation heating, wherein the energy storage inductor L4 can be used as an optional component according to performance requirements.

[0175] In some embodiments, the second bidirectional switch unit K42 can be optional depending on cost and control requirements, i.e., it can be omitted in practical applications. The first bidirectional switch unit K41, the current-limiting resistor unit R1, the first battery pack B1, the second battery pack B2, the ninth switch Q9, the eleventh switch Q11, the tenth switch Q10, the twelfth switch Q12, the first transformer T1, the energy storage switch K4, the energy storage inductor L4, the second energy storage circuit C4, and the energy storage switch K3 and the energy storage inductor L3 constitute the second part of the oscillation heating, realizing high-performance oscillation heating. The energy storage switch K3 and the energy storage inductor L3, as the high-performance heating part, can be optional depending on cost and performance requirements.

[0176] In some embodiments, see Figure 14 As shown, the vehicle energy storage power architecture also includes: an oscillating inductor unit L1 and an oscillating capacitor unit C2. The first end of the secondary winding of the first transformer T1 is connected to the midpoint of the first half-bridge 310 of the first rectifier-inverter unit 510 via the oscillating inductor unit L1 and the oscillating capacitor unit C2 in sequence. The second end of the secondary winding of the first transformer T1 is connected to the midpoint of the second half-bridge 320 of the first rectifier-inverter unit 510.

[0177] In this embodiment, the first rectifier-inverter unit 510 and the second rectifier-inverter unit 520 are controlled by the controller 700. The oscillating inductor unit L1 and the oscillating capacitor unit C2 can form a resonant circuit. By connecting the oscillating inductor unit L1 and the oscillating capacitor unit C2 in series between the first end of the secondary winding of the first transformer T1 and the midpoint of the first half-bridge 310 of the first rectifier-inverter unit 510, a half-bridge series LC resonant circuit can be formed. The LC resonant circuit is used to realize zero-voltage switching and zero-current switching. The combination of the oscillating inductor unit L1 and the oscillating capacitor unit C2 and the first transformer T1 can be used to convert the low-voltage AC power of the secondary winding of the first transformer T1 into high-voltage AC power, which is then rectified by the full-bridge unit to obtain the corresponding DC power. The second rectifier-inverter unit 520 converts the DC voltage into the corresponding AC voltage, enabling the energy storage battery 100 to provide AC power to the vehicle through the voltage conversion circuit 400. This avoids the power battery pack providing AC power to the vehicle's interior, which could affect the vehicle's power output. The energy storage battery 100 and the power battery pack respectively supply power to the vehicle's electrical load and power load. Furthermore, the first power supply terminal 610 can be connected to an AC charging pile, allowing the AC charging pile to charge the energy storage battery 100 via the voltage conversion circuit 400 and the inverter circuit.

[0178] In some embodiments, see Figure 14 As shown, the vehicle energy storage power architecture also includes: a noise suppression inductor L2 and a buffer capacitor C3. The buffer capacitor C3 is connected in parallel with the first power supply terminal 610, and the noise suppression inductor L2 is connected between the first power supply terminal 610 and the AC side of the second rectifier-inverter unit 520.

[0179] In this embodiment, the second rectifier-inverter unit 520, the noise suppression inductor L2, and the buffer capacitor C3 can form a PFC circuit. The PFC circuit can dynamically adjust the input current waveform to make it in phase with the voltage, significantly improving the power factor and reducing harmonics in the circuit.

[0180] In some embodiments, see Figure 14 As shown, the vehicle energy storage power architecture also includes: a first energy storage circuit C1, which connects the two bus connection nodes of the first rectifier-inverter unit 510 and the second rectifier-inverter unit 520.

[0181] In this embodiment, the two ends of the first energy storage circuit C1 are connected to the DC side of the first rectifier-inverter unit 510 and the DC side of the second rectifier-inverter unit 520. The first rectifier-inverter unit 510 and the second rectifier-inverter unit 520 are controlled by the controller 700. When the energy storage battery 100 is working in AC power supply mode, the controller 700 controls the control circuit 300 to convert the DC power output by the energy storage battery 100 into low-voltage AC power. Then, the first transformer T1 steps up the voltage, and the first rectifier-inverter unit 510 rectifies the voltage to obtain high-voltage DC power output to the two ends of the first energy storage circuit C1. Finally, the second rectifier-inverter unit 520 converts the high-voltage DC power into corresponding AC power output to the first power supply terminal 610. This allows the energy storage battery 100 to achieve AC power supply for the vehicle through the voltage conversion circuit 400, avoiding the power battery pack providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery 100 and the power battery pack to respectively supply power to the vehicle's electrical load and power load. Furthermore, in the mode where the first power supply terminal 610 is connected to an AC charging pile to charge the energy storage battery 100, the inverter circuit can boost the voltage to obtain high-voltage DC power output to both ends of the first energy storage circuit C1. Then, the corresponding low-voltage DC power is obtained through the first rectifier-inverter unit 510, the first transformer T1, and the control circuit 300 to charge the energy storage battery 100. This allows the AC charging pile to directly charge the energy storage battery 100 through the voltage conversion circuit 400, realizing independent charging of the energy storage battery 100 and improving the charging efficiency of the energy storage battery 100.

[0182] In some embodiments, see Figure 15 As shown, the vehicle energy storage power architecture also includes: a second power supply terminal 620, which is connected to the battery management circuit 630. The second power supply terminal 620 is used to supply power to the connected DC load according to the DC power output by the battery management circuit 630, or to charge the energy storage battery 100 through the battery management circuit 630 according to the connected DC power.

[0183] In some embodiments, the controller 700 is further configured to control the energy storage battery 100 to charge the energy storage device 401 via the control circuit 300 in the first self-heating mode, and to control the energy storage device 401 to charge the energy storage battery 100 via the voltage conversion circuit 400, so that the energy storage battery 100 self-heats.

[0184] In this embodiment, when the temperature of the energy storage battery 100 is lower than the first preset temperature threshold, the controller 700 can control the control circuit 300 to operate in the first self-heating mode, thereby enabling the energy storage battery 100 to share the energy storage device 401 in the voltage conversion circuit 400. This allows the energy storage battery 100 to charge the energy storage device 401 via the control circuit 300, and the control circuit 401 to charge the energy storage battery 100 via the voltage conversion circuit 400, thus enabling the energy storage battery 100 to self-heat. Using pulse self-heating for thermal management of the energy storage battery 100 not only reduces costs but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0185] In some embodiments, the controller 700 is further configured to control the first battery pack B1 and the second battery pack B2 to alternately generate pulse currents via the energy storage device 401 in the second self-heating mode, so as to enable the energy storage battery 100 to self-heat.

[0186] In this embodiment, when the temperature of the energy storage battery 100 is lower than the first preset temperature threshold, the controller 700 can control the control circuit 300 to work in the second self-heating mode, so that the first battery pack B1 and the second battery pack B2 alternately output pulse current through the inductor circuit, and use pulse self-heating to perform thermal management on the energy storage battery 100. This not only reduces costs, but also helps to replace heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the low-voltage power distribution system.

[0187] In some embodiments, the controller 700 is also configured to control the energy storage battery 100 to output AC power to the first power supply terminal 610 via the voltage conversion circuit 400 in the first power supply mode.

[0188] In some embodiments, the controller 700 is also configured to control the energy storage battery 100 to output DC power to the second power supply terminal 620 via the battery management circuit 630 in the second power supply mode.

[0189] In this embodiment, under the first power supply mode, the controller 700 controls the control circuit 300 to convert the DC power output from the energy storage battery 100 into low-voltage AC power. Then, the DC power is boosted by the first transformer T1 and rectified by the first rectifier-inverter unit 510 to obtain high-voltage DC power output to both ends of the first energy storage circuit C1. Finally, the high-voltage DC power is converted into corresponding AC power output to the first power supply terminal 610 by the second rectifier-inverter unit 520. This allows the energy storage battery 100 to achieve AC power supply for the vehicle through the voltage conversion circuit 400, avoiding the power battery pack providing AC power to the vehicle's interior and affecting the vehicle's power output. This allows the energy storage battery 100 and the power battery pack to respectively perform power supply for the vehicle's electrical load and power load.

[0190] In some embodiments, the controller 700 is also configured to control the voltage conversion circuit 400 and the inverter circuit to convert the AC power of the first power supply terminal 610 into DC power in the first charging mode, and charge the energy storage battery 100 via the battery management circuit 630.

[0191] In this embodiment, in the first charging mode, the second rectifier-inverter unit 520 circuit boosts the voltage to obtain high-voltage DC power, which is output to both ends of the first energy storage circuit C1. Then, the first rectifier-inverter unit 510, the first transformer T1, and the control circuit 300 sequentially obtain corresponding low-voltage DC power to charge the energy storage battery 100. This allows the AC charging pile to directly charge the energy storage battery 100 via the voltage conversion circuit 400, achieving independent charging of the energy storage battery 100 and improving the charging efficiency of the energy storage battery 100.

[0192] In some embodiments, the controller 700 is further configured to control the first battery pack B1 and the second battery pack B2 to perform power balancing via the voltage conversion circuit 400 in the equalization mode, so as to reduce the power difference between the first battery pack B1 and the second battery pack B2.

[0193] In this embodiment, when the difference in charge level between the first battery pack B1 and the second battery pack B2 exceeds a first preset charge threshold, the controller 700 can control the control circuit 300 to operate in a corresponding switching state, causing the battery pack with higher charge level in the first battery pack B1 and the second battery pack B2 to charge the battery pack with lower charge level, thereby achieving charge balance between the first battery pack B1 and the second battery pack B2. Furthermore, after the control circuit 300 is disconnected and left idle for a first preset time, the controller 700 again detects the difference in charge level between the first battery pack B1 and the second battery pack B2. If the difference in charge level between the first battery pack B1 and the second battery pack B2 is still greater than the first preset charge threshold, the controller again selects the battery pack with higher charge level to charge the battery pack with lower charge level until the difference in charge level between the first battery pack B1 and the second battery pack B2 is less than a second preset charge threshold. This second preset charge threshold is less than the first preset charge threshold, and the second preset charge threshold can be set to be less than 1% of the charge level of the first battery pack B1.

[0194] In some embodiments, the energy storage battery 100 includes a first battery pack B1 and a second battery pack B2.

[0195] In some embodiments, the voltages at both ends of the first battery pack B1 and the second battery pack B2 are the same.

[0196] In some embodiments, the output voltage range of the first battery pack B1 and the second battery pack B2 is 12V-72V.

[0197] In some embodiments, the first battery pack B1 includes a 12V lithium-ion battery or sodium-ion battery, or other rechargeable battery.

[0198] In some embodiments, the first battery pack B1 includes a 24V lithium-ion battery or sodium-ion battery, or other rechargeable battery.

[0199] In some embodiments, the first battery pack B1 includes a 48V lithium-ion battery or sodium-ion battery, or other rechargeable battery.

[0200] In some embodiments, the first battery pack B1 includes a 72V lithium-ion battery or sodium-ion battery, or other rechargeable battery.

[0201] In this embodiment, the battery device in this application embodiment can be applied to new energy vehicles or fuel vehicles, wherein the output voltage of the first battery pack B1 and the second battery pack B2 does not exceed 100V.

[0202] In some embodiments, the second battery pack B2 includes a 12V lithium-ion battery or sodium-ion battery, or other rechargeable batteries.

[0203] In some embodiments, the second battery pack B2 includes a 24V lithium-ion battery or sodium-ion battery, or other rechargeable battery.

[0204] In some embodiments, the second battery pack B2 includes a 48V lithium-ion battery or sodium-ion battery, or other rechargeable battery, and the output voltage of the second battery pack B2 is 48V.

[0205] In some embodiments, the second battery pack B2 includes a 72V lithium-ion battery or sodium-ion battery, or other rechargeable battery, and the output voltage of the second battery pack B2 does not exceed 100V.

[0206] This application provides a chassis including a vehicle energy storage power architecture as described in any of the above embodiments.

[0207] In this embodiment, by integrating the vehicle energy storage power architecture described in any of the above embodiments into the vehicle chassis, the chassis can supply power to the functional loads and / or drive loads within the vehicle. By reusing at least a portion of the energy storage devices 401 in the voltage conversion circuit 400, it is not necessary to additionally set up the energy storage devices 401, thus saving the cost of the vehicle energy storage power architecture. The control circuit 300 controls the energy storage battery 100 to charge each other with at least a portion of the energy storage devices 401 in the voltage conversion circuit 400. The energy storage battery 100 can be heated by pulse self-heating, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0208] This application provides a vehicle including a vehicle energy storage power architecture as described in any of the above embodiments.

[0209] This application provides a vehicle including the chassis described in the above embodiments.

[0210] In this embodiment, the vehicle is equipped with a vehicle energy storage power architecture or chassis according to any of the above embodiments, which can supply power to the functional loads within the vehicle. These functional loads can be AC ​​loads, and the power battery pack can supply power to the vehicle's power loads. In the vehicle energy storage power architecture, by reusing at least a portion of the energy storage devices 401 in the voltage conversion circuit 400, it is possible to eliminate the need for additional energy storage devices 401, thus saving the cost of the vehicle energy storage power architecture. The control circuit 300 controls the energy storage battery 100 to charge each other with at least a portion of the energy storage devices 401 in the voltage conversion circuit 400. Pulse self-heating can be used to heat the energy storage battery 100, replacing heating film heating or coolant heating, making the battery device simpler and facilitating the layout and simplification of the battery system.

[0211] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0212] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0213] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the electronic device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0214] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0215] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0216] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A vehicle energy storage power supply architecture, characterized in that, include: Energy storage batteries; The control circuit is connected to the energy storage battery; A voltage conversion circuit is connected to the energy storage battery, the control circuit, and the first power supply terminal, and is used to control the voltage conversion between the energy storage battery and the first power supply terminal. The voltage conversion circuit and the control circuit are controlled by a controller to control the energy storage battery and at least a portion of the energy storage devices in the voltage conversion circuit to charge each other.

2. The vehicle energy storage power architecture according to claim 1, characterized in that, The control circuit is used to convert the DC power provided by the energy storage battery into AC power and output it to the voltage conversion circuit.

3. The vehicle energy storage power architecture according to claim 1, characterized in that, The control circuit is also used to convert the AC power provided by the voltage conversion circuit into DC power to charge the energy storage battery.

4. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The control circuit includes a first half-bridge and a second half-bridge, which are connected in parallel. The first end of the energy storage device is connected to the midpoint of the first half-bridge, and the second end of the energy storage device is connected to the midpoint of the second half-bridge.

5. The vehicle energy storage power architecture according to claim 4, characterized in that, The voltage conversion circuit includes a first transformer; The energy storage device includes the winding of the first transformer, the first end of the primary winding of the first transformer is connected to the midpoint of the half-bridge of the first half-bridge, and the second end of the primary winding of the first transformer is connected to the midpoint of the half-bridge of the second half-bridge.

6. The vehicle energy storage power architecture according to claim 4, characterized in that, The voltage conversion circuit includes an energy storage inductor; The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the midpoint of the second half-bridge.

7. The vehicle energy storage power architecture according to claim 4, characterized in that, The vehicle energy storage power architecture also includes: An energy storage circuit is connected to the control circuit, which is controlled by the controller to control the energy storage circuit and the energy storage battery to charge each other.

8. The vehicle energy storage power architecture according to claim 7, characterized in that, The energy storage circuit includes: An energy storage inductor is connected to the control circuit. The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the midpoint of the second half-bridge. The energy storage battery charges the energy storage inductor through the control circuit.

9. The vehicle energy storage power architecture according to claim 8, characterized in that, The energy storage circuit also includes an energy storage switch, which is connected in series with the energy storage inductor.

10. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The energy storage battery includes a first battery pack and a second battery pack, the first battery pack and the second battery pack are connected in series, and the control circuit is also used to control the first battery pack and the second battery pack to charge each other through the energy storage device.

11. The vehicle energy storage power architecture according to claim 10, characterized in that, The control circuit includes a first half-bridge; The first end of the energy storage device is connected to the midpoint of the first half-bridge, and the second end of the energy storage device is connected to the common node of the first battery pack and the second battery pack.

12. The vehicle energy storage power architecture according to claim 11, characterized in that, The voltage conversion circuit includes a first transformer; The energy storage device includes the winding of the first transformer. The first end of the primary winding of the first transformer is connected to the midpoint of the half-bridge of the first half-bridge, and the second end of the primary winding of the first transformer is connected to the common node of the first battery pack and the second battery pack.

13. The vehicle energy storage power architecture according to claim 11, characterized in that, The voltage conversion circuit includes an energy storage inductor; The energy storage device includes the energy storage inductor, the first end of which is connected to the midpoint of the first half-bridge, and the second end of which is connected to the common node of the first battery pack and the second battery pack.

14. The vehicle energy storage power architecture according to claim 11, characterized in that, The vehicle energy storage power architecture also includes: An energy storage circuit is connected to the control circuit, which is controlled by the controller to control the first battery pack and the second battery pack to charge each other.

15. The vehicle energy storage power architecture according to claim 14, characterized in that, The energy storage circuit includes: An energy storage inductor is connected to the control circuit. The first end of the energy storage inductor is connected to the midpoint of the first half-bridge, and the second end of the energy storage inductor is connected to the common node of the first battery pack and the second battery pack. The energy storage battery charges each other through the control circuit and the energy storage inductor.

16. The vehicle energy storage power architecture according to claim 15, characterized in that, The energy storage circuit also includes an energy storage switch, which is connected in series with the energy storage inductor.

17. The vehicle energy storage power architecture according to claim 14, characterized in that, The control circuit also includes a first half-bridge and a second half-bridge; The first end of the energy storage circuit is connected to the midpoint of the first half-bridge, and the second end of the energy storage circuit is connected to the midpoint of the second half-bridge.

18. The vehicle energy storage power architecture according to claim 17, characterized in that, The energy storage circuit also includes: Energy storage inductor, wherein the energy storage inductor is a common-mode inductor; The control circuit also includes a first half-bridge and a second half-bridge; The first end of the common-mode inductor is connected to the midpoint of the first half-bridge, the second end of the common-mode inductor is connected to the midpoint of the second half-bridge, and the third and fourth ends of the common-mode inductor are connected to the common node of the first battery pack and the second battery pack.

19. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The voltage conversion circuit further includes: The first transformer is connected to the control circuit; The first rectifier-inverter unit is connected to the first transformer and is used to convert the AC power output by the first transformer into DC power.

20. The vehicle energy storage power architecture according to claim 19, characterized in that, The voltage conversion circuit further includes a second rectifier-inverter unit, connected between the first rectifier-inverter unit and the first power supply terminal, which converts the DC power into AC power and outputs it to the first power supply terminal.

21. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The vehicle energy storage power architecture also includes: A battery management circuit, connected to the energy storage battery, is used to control the charging and discharging process of the energy storage battery.

22. The vehicle energy storage power architecture according to claim 21, characterized in that, At least two of the battery management circuit, the voltage conversion circuit, and the control circuit are controlled by the same controller.

23. The vehicle energy storage power architecture according to claim 19, characterized in that, The voltage conversion circuit further includes: an oscillating inductor unit; the first end of the secondary winding of the first transformer is connected to the midpoint of the first half-bridge of the first rectifier-inverter unit via the oscillating inductor unit, and the second end of the secondary winding of the first transformer is connected to the midpoint of the second half-bridge of the first rectifier-inverter unit.

24. The vehicle energy storage power architecture according to claim 23, characterized in that, The voltage conversion circuit further includes an oscillating capacitor unit, which is connected in series with the oscillating inductor unit.

25. The vehicle energy storage power architecture according to claim 20, characterized in that, The vehicle energy storage power architecture also includes a buffer capacitor, which is connected in parallel with the first power supply terminal.

26. The vehicle energy storage power architecture according to claim 25, characterized in that, The vehicle energy storage power architecture further includes: a noise suppression inductor; the noise suppression inductor is connected between the first power supply terminal and the AC side of the second rectifier inverter unit.

27. The vehicle energy storage power architecture according to claim 20, characterized in that, The vehicle energy storage power architecture also includes: The first energy storage circuit connects the two bus connection nodes of the first rectifier-inverter unit and the second rectifier-inverter unit.

28. The vehicle energy storage power architecture according to claim 21, characterized in that, The vehicle energy storage power architecture also includes: The second power supply terminal is connected to the battery management circuit and is used to supply power to the connected DC load according to the DC power output by the battery management circuit, or to charge the energy storage battery according to the connected DC power through the battery management circuit.

29. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The controller is also configured to, in the first self-heating mode, control the energy storage battery to charge the energy storage device via the control circuit, and control the energy storage device to charge the energy storage battery via the voltage conversion circuit, so that the energy storage battery can self-heat.

30. The vehicle energy storage power architecture according to claim 10, characterized in that, The controller is also configured to control the first battery pack and the second battery pack to alternately generate pulse currents through the energy storage device in the second self-heating mode, so as to enable the energy storage battery to self-heat.

31. The vehicle energy storage power architecture according to any one of claims 1-3, characterized in that, The controller is also used to control the energy storage battery to output AC power to the first power supply terminal via the voltage conversion circuit in the first power supply mode.

32. The vehicle energy storage power architecture according to claim 28, characterized in that, The controller is also used in the second power supply mode to control the energy storage battery to output DC power to the second power supply terminal via the battery management circuit.

33. The vehicle energy storage power architecture according to claim 21, characterized in that, The controller is also configured to, in the first charging mode, control the voltage conversion circuit to convert the AC power from the first power supply terminal into DC power, and charge the energy storage battery via the battery management circuit.

34. The vehicle energy storage power architecture according to claim 10, characterized in that, The controller is also used to control the first battery pack and the second battery pack to perform power balancing through the energy storage device in the balancing mode, so as to reduce the power difference between the first battery pack and the second battery pack.

35. A chassis, characterized in that, The chassis includes a vehicle energy storage power architecture as described in any one of claims 1 to 34.

36. A vehicle, characterized in that, The vehicle includes a vehicle energy storage power architecture as described in any one of claims 1 to 34; or includes a chassis as described in claim 35.

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