A charging system, a charging control method and related devices

Abstract

A charging system, charging control method, and related apparatus are disclosed. In this application, if the first switch unit is in a closed state, the charging current for the battery is increased compared to the charging current output by the receiving unit, thereby reducing battery charging time, improving battery charging efficiency, and enhancing user experience. Furthermore, the charging system includes a second switch unit used to interrupt the power supply from the receiving unit to the component unit, thereby interrupting the supply of high-voltage current from the receiving unit to the component unit. This improves the voltage withstand capability of the component unit, reduces the possibility of component unit damage, and lowers usage costs.

Description

Technical Field

[0001] This application relates to the field of computer technology, and in particular to a charging system, charging control method and related devices. Background Technology

[0002] With advancements in industrial technology and improvements in living standards, an increasing number of mobile devices are using clean new energy sources for power, leading to a growing market share of new energy mobile devices. For example, sales of new energy vehicles are rising year by year, enjoying widespread popularity among consumers in the automotive market. Most new energy mobile devices are powered by batteries. However, due to the limited range of these batteries, they frequently need to be charged to ensure daily use, making users increasingly demanding higher charging efficiency.

[0003] Some charging solutions achieve fast charging through a buck-boost architecture (an architecture that reduces the charging voltage and increases the charging current). However, during buck-boost charging, the charging station can supply power to other components of the vehicle. If the charging station is a high-voltage platform (such as an 800V or 1000V high-voltage platform), this high-voltage current supplied to other components may reduce their voltage withstand capability, making them more susceptible to damage and increasing operating costs. Alternatively, these components may need to be replaced with high-voltage resistant ones, further increasing costs. Summary of the Invention

[0004] This application provides a charging system, charging control method, and related apparatus that can disconnect the circuit from which the power receiving unit supplies power to the component unit and interrupt the supply of high-voltage current from the power receiving unit to the component unit, thereby improving the withstand voltage capability of the component unit, reducing the possibility of component unit damage, and reducing usage costs.

[0005] In a first aspect, this application provides a charging system comprising a power receiving unit, a current boosting unit, a first switching unit, a second switching unit, a component unit, and a battery. The power receiving unit is connected to the current boosting unit, the current boosting unit is connected to the first switching unit, the first switching unit is connected to the battery, and the battery is connected to the power receiving unit. The power receiving unit receives charging current from a charging module. The charging current sequentially passes through the current boosting unit, the first switching unit (which is in a closed state), and the battery before returning to the power receiving unit, forming a current boosting charging circuit to achieve the charging function for the battery.

[0006] In the charging system described above, if the first switch unit is in the closed state, the charging current flowing from the receiving unit is amplified after passing through the booster unit. The amplified charging current then passes sequentially through the closed first switch unit and the battery before returning to the receiving unit, forming a booster charging circuit to charge the battery. In this booster charging circuit, the charging current for the battery is increased compared to the charging current output by the receiving unit, thereby reducing battery charging time, improving battery charging efficiency, and enhancing the user experience.

[0007] The receiving unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the receiving unit. The charging current passes sequentially through the second switching unit and the component unit (both in a closed state) and then returns to the receiving unit, forming a circuit to power the component unit, thus realizing the power supply function for the component unit. The second switching unit is used to interrupt the power supply from the receiving unit to the component unit.

[0008] In some cases, component units operate under certain environmental conditions, such as a working voltage between 300V and 700V. When the voltage supplied to a component unit exceeds 700V, its voltage withstand capability may decrease, making it more susceptible to damage and increasing operating costs. Replacing the component unit with one capable of withstanding voltages above 700V would also increase costs. Furthermore, if the charging module transmits a high-voltage current (such as 800V or 1000V) to the receiving unit, this high-voltage current may cause the component unit's voltage withstand capability to decrease, making it more susceptible to damage. The aforementioned charging system incorporates a second switching unit to interrupt the receiving unit's supply of power to the component unit. This interruption of the high-voltage current supply from the receiving unit improves the component unit's voltage withstand capability, reduces the likelihood of damage, and lowers operating costs.

[0009] In one possible implementation of the first aspect, the battery is connected to the component unit to form a circuit, and the battery is used to power the component unit.

[0010] In some cases, component units need to remain powered. For example, component units may include battery charging components (such as a charge / discharge unit (CDU) integrating a high-low voltage power conversion module (DC-DC)) and / or battery thermal management components (such as a positive temperature coefficient heater (PTC) / climate control unit (CCU)). During battery charging, these components need to remain powered to ensure normal operation of the charging process. In the above embodiment, the charging system powers the component units via the battery, enabling them to remain powered and maintain normal charging operation. Furthermore, if the battery output voltage is low, within the component unit's operating voltage range, the component unit does not need to be a high-voltage withstand capability. This improves the component unit's withstand voltage, reduces the possibility of damage, achieves isolation between high-voltage and low-voltage platforms, saves component development costs, and increases efficiency.

[0011] In another possible implementation of the first aspect, the charging system further includes a third switching unit, wherein the battery is connected to the component unit, the component unit is connected to the third switching unit, and the third switching unit is connected to the battery. The battery outputs a supply current, which passes sequentially through the component unit and the closed third switching unit before returning to the battery, forming a circuit for the battery to supply power to the component unit, thereby realizing the power supply function for the component unit. Alternatively, the third switching unit can be used to interrupt the battery's power supply to the component unit.

[0012] In the above embodiments, the charging system supplies power to the component unit through the battery so that the component unit remains powered and the charging-related work is maintained normally. The system can also control the battery to supply power to the component unit through the third switch unit. For example, when the third switch unit is in the open state, the battery supply to the component unit is interrupted, so that the battery supply to the component unit is controllable and can be flexibly applied to various scenarios.

[0013] In another possible implementation of the first aspect, the power receiving unit is connected to the second switching unit, the second switching unit is connected to the third switching unit, the third switching unit is connected to the battery, and the battery is connected to the power receiving unit. When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (in the closed state), the third switching unit (in the closed state), and the battery before returning to the power receiving unit, forming a charging circuit to achieve the charging function of charging the battery.

[0014] In the above embodiments, the charging current does not go through the boosting unit for boosting operation, but is directly output to the battery. That is, the charging current output by the receiving unit is used to charge the battery. The charging system can charge the battery in a variety of ways and can be flexibly applied to a variety of scenarios.

[0015] In another possible implementation of the first aspect, the power receiving unit is connected to the second switching unit, the second switching unit is connected to the battery, and the battery is connected to the power receiving unit. When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (which is in the closed state) and the battery before returning to the power receiving unit, forming a charging circuit to achieve the charging function for the battery.

[0016] In the above embodiments, the charging current does not go through the boosting unit for boosting operation, but is directly output to the battery. That is, the charging current output by the receiving unit is used to charge the battery. The charging system can charge the battery in a variety of ways and can be flexibly applied to a variety of scenarios.

[0017] In another possible implementation of the first aspect, the charging system further includes a fourth switching unit, with the battery connected to the fourth switching unit, the fourth switching unit connected to the component unit, and the component unit connected to the battery. The battery outputs a supply current, which passes sequentially through the fourth switching unit and the component unit (both in a closed state) and then returns to the battery, forming a circuit for the battery to supply power to the component unit, thereby achieving the power supply function for the component unit. Alternatively, the fourth switching unit can be used to interrupt the battery's power supply to the component unit.

[0018] In the above embodiments, the charging system supplies power to the component unit through the battery so that the component unit is kept in a powered state and the charging-related work is kept running normally. The system can also control the battery to supply power to the component unit through the fourth switch unit. For example, when the fourth switch unit is in the open state, the battery to supply power to the component unit is interrupted, so that the battery to supply power to the component unit is controllable and can be flexibly applied to various scenarios.

[0019] In another possible implementation of the first aspect, the power receiving unit is connected to the second switching unit, the second switching unit is connected to the fourth switching unit, the fourth switching unit is connected to the battery, and the battery is connected to the power receiving unit. When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (in the closed state), the fourth switching unit (in the closed state), and the battery before returning to the power receiving unit, forming a charging circuit to achieve the charging function of charging the battery.

[0020] In the above embodiments, the charging current does not go through the boosting unit for boosting operation, but is directly output to the battery. That is, the charging current output by the receiving unit is used to charge the battery. The charging system can charge the battery in a variety of ways and can be flexibly applied to a variety of scenarios.

[0021] In another possible implementation of the first aspect, the power receiving unit is connected to the second switching unit, the second switching unit is connected to the battery, and the battery is connected to the power receiving unit. When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (which is in the closed state) and the battery before returning to the power receiving unit, forming a charging circuit to achieve the charging function for the battery.

[0022] In the above embodiments, the charging current does not go through the boosting unit for boosting operation, but is directly output to the battery. That is, the charging current output by the receiving unit is used to charge the battery. The charging system can charge the battery in a variety of ways and can be flexibly applied to a variety of scenarios.

[0023] In another possible implementation of the first aspect, the charging system further includes a control unit for sending a first control signal to a first switching unit when a first condition is met. The first control signal controls the first switching unit to close. The first condition includes a maximum current output by the receiving unit being less than or equal to the requested current of the battery, and a maximum voltage output by the receiving unit being greater than the maximum voltage that the battery can withstand.

[0024] Under the aforementioned first condition, the current output by the receiving unit is relatively small and cannot meet the battery's charging requirements. Therefore, when the first condition is met, the control unit controls the first switch unit to close via a first control signal. At this time, compared to the current output by the receiving unit, the voltage is reduced but the current is increased to meet the battery's charging requirements, thereby improving the charging speed and efficiency.

[0025] In another possible implementation of the first aspect, the control unit is further configured to send a second control signal to the second switching unit when a second condition is met. The second control signal is used to control the second switching unit to disconnect. The second condition includes the maximum value of the voltage output by the powered unit being greater than the maximum value of the voltage that the component unit can withstand.

[0026] Under the second condition described above, the voltage output by the power receiving unit is too high, exceeding the maximum withstand capacity of the component unit, which may lead to a decrease in the component unit's withstand voltage and make it prone to damage. Therefore, when the second condition is met, the control unit controls the second switching unit to disconnect via the second control signal, thereby disconnecting the power supply circuit from the power receiving unit to the component unit and interrupting the high-voltage current supplied by the power receiving unit to the component unit. This improves the withstand voltage of the component unit, reduces the possibility of component unit damage, and lowers the cost of use.

[0027] In another possible implementation of the first aspect, the control unit is further configured to send a third control signal to the third switching unit when the third condition and / or the fourth condition are met, the third control signal being used to control the third switching unit to disconnect. Alternatively, the control unit is further configured to send a fourth control signal to the fourth switching unit when the third condition and / or the fourth condition are met, the fourth control signal being used to control the fourth switching unit to disconnect. The third condition includes the remaining battery charge being less than a charge threshold, and the fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

[0028] Under the third condition described above, the remaining battery power is low and may not be able to continue supplying power to the component unit. Under the fourth condition described above, the component unit is in a faulty state, meaning it cannot continue to operate normally. In this case, the component unit does not need to maintain a power supply state, and the battery does not need to continue supplying power to the component unit. Alternatively, under the fourth condition described above, the component unit has no power supply requirement. In this case, the component unit does not need to maintain a power supply state, and the battery does not need to continue supplying power to the component unit. Therefore, when the third condition and / or the fourth condition are met, the control unit controls the third switch unit to open via the third control signal, disconnecting the battery's power supply circuit to the component unit and interrupting the battery's power supply to the component unit.

[0029] In another possible implementation of the first aspect, the second switching unit is integrated into the current boosting unit, or the second switching unit is integrated into the battery. Optionally, the units in the above-described charging system can also be set independently. For example, the second switching unit is set independently of other units in the charging system and is separately installed in the power distribution device.

[0030] In the above embodiments, there are multiple possibilities for the location of the second switch unit, and multiple schemes can be flexibly configured to meet the needs of different scenarios.

[0031] Secondly, this application provides a charging control method applied to the charging system described in the first aspect. The charging system includes a control unit, a power receiving unit, a second switching unit, and a component unit. The power receiving unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the power receiving unit, forming a circuit for supplying power to the component unit, thereby realizing the power supply function for the component unit. The power receiving unit is used to receive charging current from the charging module. The method includes: sending a second control signal to the second switching unit when a second condition is met, the second control signal being used to control the second switching unit to disconnect. The second switching unit is used to interrupt the power receiving unit from supplying power to the component unit, the second condition including that the maximum value of the voltage output by the power receiving unit is greater than the maximum value of the voltage that the component unit can withstand.

[0032] In the above method, the control device can send a second control signal to the second switch unit when the second condition is met, thereby controlling the second switch unit to disconnect through the second control signal, disconnecting the power supply circuit from the power receiving unit to the component unit, interrupting the power receiving unit from providing high voltage current to the component unit, thereby improving the voltage withstand capability of the component unit, reducing the possibility of component unit damage, and reducing the cost of use.

[0033] In one possible implementation of the second aspect, the charging system further includes a current boosting unit, a first switching unit, and a battery. The receiving unit is connected to the current boosting unit, the current boosting unit is connected to the first switching unit, the first switching unit is connected to the battery, and the battery is connected to the receiving unit. The method further includes: sending a first control signal to the first switching unit when a first condition is met. The first control signal is used to control the first switching unit to close. When the first switching unit is closed, the charging current sequentially passes through the current boosting unit, the closed first switching unit, and the battery before returning to the receiving unit, forming a current boosting charging circuit to achieve the charging function of charging the battery. The first condition includes the maximum value of the current output by the receiving unit being less than or equal to the requested current of the battery, and the maximum value of the voltage output by the receiving unit being greater than the maximum voltage that the battery can withstand.

[0034] In the above embodiments, the control device can send a first control signal to the first switch unit when the first condition is met, thereby controlling the first switch unit to close through the first control signal. At this time, the charging current for charging the battery is lower in voltage but higher in current than the current output by the power receiving unit to meet the charging requirements of the battery, thereby improving the charging speed and efficiency of the battery.

[0035] In another possible implementation of the second aspect, the charging system further includes a third switching unit, with the battery connected to the component unit, the component unit connected to the third switching unit, and the third switching unit connected to the battery. The method further includes: sending a third control signal to the third switching unit upon satisfying a third condition and / or a fourth condition, the third control signal controlling the third switching unit to disconnect. The third switching unit is used to interrupt the battery's power supply to the component unit. The third condition includes the battery's remaining charge being less than a charge threshold. The fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

[0036] In the above embodiments, when the third condition and / or the fourth condition are met, the control device sends a third control signal to the third switch unit, thereby controlling the third switch unit to open through the third control signal, disconnecting the circuit for the battery to supply power to the component unit, and interrupting the battery's power supply to the component unit.

[0037] In another possible implementation of the second aspect, the charging system further includes a fourth switching unit, the battery being connected to the fourth switching unit, the fourth switching unit being connected to the component unit, and the component unit being connected to the battery. The method further includes: sending a fourth control signal to the fourth switching unit upon satisfying a third condition and / or a fourth condition, the fourth control signal being used to control the fourth switching unit to disconnect. The fourth switching unit is used to interrupt the battery's power supply to the component unit. The third condition includes the battery's remaining charge being less than a charge threshold. The fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

[0038] In the above embodiments, when the third condition and / or the fourth condition are met, the control device sends a fourth control signal to the fourth switch unit, thereby controlling the fourth switch unit to open through the fourth control signal, disconnecting the circuit for the battery to supply power to the component unit, and interrupting the battery's power supply to the component unit.

[0039] Thirdly, this application provides a control device including a transceiver module. The transceiver module is used to send a second control signal to a second switching unit when a second condition is met. The second control signal is used to control the second switching unit to disconnect. The second switching unit is used to interrupt the power supply from the powered unit to the component unit. The second condition includes that the maximum value of the voltage output by the powered unit is greater than the maximum value of the voltage that the component unit can withstand. The powered unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the powered unit. The powered unit is used to receive charging current from the charging module.

[0040] In one possible implementation of the third aspect, the transceiver module is further configured to send a first control signal to the first switching unit when a first condition is met. The first control signal controls the first switching unit to close. When the first switching unit is closed, the charging current sequentially passes through the booster unit, the closed first switching unit, and the battery before returning to the receiving unit, forming a booster charging circuit to achieve the charging function for the battery. The first condition includes that the maximum value of the current output by the receiving unit is less than or equal to the requested current of the battery, and that the maximum value of the voltage output by the receiving unit is greater than the maximum voltage that the battery can withstand. The receiving unit is connected to the booster unit, the booster unit is connected to the first switching unit, the first switching unit is connected to the battery, and the battery is connected to the receiving unit.

[0041] In another possible implementation of the third aspect, the transceiver module is further configured to send a third control signal to the third switching unit upon satisfying a third condition and / or a fourth condition. The third control signal controls the third switching unit to disconnect. The third switching unit is used to interrupt battery power supply to the component unit. The third condition includes that the remaining battery charge is less than a charge threshold. The fourth condition includes that the component unit is in a fault state, and / or that the component unit has no power supply requirement. The battery is connected to the component unit, the component unit is connected to the third switching unit, and the third switching unit is connected to the battery.

[0042] In another possible implementation of the third aspect, the transceiver module is further configured to send a fourth control signal to the fourth switching unit upon satisfying a third condition and / or a fourth condition. The fourth control signal controls the fourth switching unit to disconnect. The fourth switching unit is used to interrupt battery power supply to the component unit. The third condition includes that the remaining battery charge is less than a charge threshold. The fourth condition includes that the component unit is in a fault state, and / or that the component unit has no power supply requirement. The battery is connected to the fourth switching unit, the fourth switching unit is connected to the component unit, and the component unit is connected to the battery.

[0043] Fourthly, embodiments of this application provide a computing device including a processor and a memory, wherein the memory stores a program, and the processor executes the program stored in the memory to enable the computing device to implement the method described in any of the second aspects above.

[0044] Fifthly, this application provides a terminal, which includes the aforementioned charging system, the aforementioned control device, or the aforementioned computing device, and the terminal is used to implement the method described in any of the second aspects above.

[0045] Optionally, the terminal can be a means of transportation, such as a car, truck, aircraft, drone, slow-moving transport vehicle, spacecraft, or ship, etc., for use in any possible scenario. This application does not impose any restrictions on this. The terminal can also be a robot.

[0046] In a sixth aspect, embodiments of this application provide a computer-readable storage medium for storing a computer program, the computer program including instructions for performing the method described in any of the second aspects above.

[0047] In a seventh aspect, this application provides a computer program product including computer instructions that, when executed by a control device, computing device, or processor, cause the method described in any of the second aspects to be implemented.

[0048] The solutions provided in the third to seventh aspects above are used to implement or cooperate with the methods provided in the second aspect above, and therefore can achieve the same or corresponding beneficial effects as the charging system in the first aspect, which will not be elaborated here. Attached Figure Description

[0049] The accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0050] Figure 1 This is a schematic diagram of the structure of a charging system provided in an embodiment of this application;

[0051] Figure 2 This is a schematic diagram of the operation of a current boosting unit provided in an embodiment of this application;

[0052] Figure 3 This is a schematic diagram of another current boosting unit provided in the embodiments of this application;

[0053] Figure 4 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0054] Figure 5 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0055] Figure 6 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0056] Figure 7 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0057] Figure 8 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0058] Figure 9 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0059] Figure 10 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0060] Figure 11 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0061] Figure 12 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0062] Figure 13 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0063] Figure 14 This is a schematic diagram of another charging system provided in the embodiments of this application;

[0064] Figure 15 This is a schematic flowchart of a charging control method provided in an embodiment of this application;

[0065] Figure 16 This is a schematic flowchart of another charging control method provided in the embodiments of this application;

[0066] Figure 17 This is a schematic diagram of the structure of a control device provided in an embodiment of this application;

[0067] Figure 18 This is a schematic diagram of the structure of a computing device provided in an embodiment of this application. Detailed Implementation

[0068] The following section provides an exemplary description of the systems that this application may be applied to. It should be noted that the system architecture and business scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will understand that, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this application are equally applicable to similar technical problems.

[0069] The following describes a charging system provided by an embodiment of this application. For example... Figure 1 As shown, the charging system provided in this application embodiment includes a power receiving unit 101, a current boosting unit 102, a first switching unit 103, a second switching unit 104, a component unit 105, and a battery 106.

[0070] The power receiving unit 101 is connected to the charging module and receives charging current from the charging module to charge the charging system. For example, the power receiving unit 101 can be a charging socket installed on the vehicle, and the charging module can be a charging plug (or charging gun) installed on the charging pile. The charging socket and charging plug are coupled to achieve a charging connection. Alternatively, the power receiving unit 101 can be a charging plug (or charging gun) installed on the vehicle, and the charging module can be a charging socket installed on the charging pile. The charging socket and charging plug are coupled to achieve a charging connection. A charging pile can be a charging device that provides energy replenishment for electric vehicles. Its function is similar to a gas pump at a gas station. It can be fixed to the ground or wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. It can charge various models of electric vehicles according to different voltage levels.

[0071] The power receiving unit 101 is connected to the current boosting unit 102, the current boosting unit 102 is connected to the first switching unit 103, the first switching unit 103 is connected to the battery 106, and the battery 106 is connected to the power receiving unit 101. After the power receiving unit 101 receives the charging current, the charging current flowing out of the power receiving unit 101 passes sequentially through the current boosting unit 102, the first switching unit 103 in a closed state, and the battery 106 before returning to the power receiving unit 101, forming a charging circuit to charge the battery 106.

[0072] The booster unit 102 is used to increase the charging current flowing from the receiving unit 101. For example, if the charging current flowing from the receiving unit 101 is 250A, the 250A charging current becomes a 400A charging current after passing through the booster unit 102. That is, the booster unit 102 increases the 250A charging current to a 400A charging current. The battery 106 is a device that can convert chemical energy, physical energy, etc., into electrical energy. For example, the battery 106 includes, but is not limited to, lithium-ion batteries (such as ternary lithium batteries or lithium iron phosphate batteries), lead-acid batteries, or nickel-metal hydride batteries.

[0073] The power receiving unit 101 is connected to the second switching unit 104, the second switching unit 104 is connected to the component unit 105, and the component unit 105 is connected to the power receiving unit 101. After the power receiving unit 101 receives the charging current, the charging current flowing out of the power receiving unit 101 passes sequentially through the second switching unit 104 and the component unit 105 (both in a closed state) and then returns to the power receiving unit 101, thereby supplying power to the component unit 105. The second switching unit 104 is used to interrupt the power supply from the power receiving unit 101 to the component unit; for example, when the second switching unit 104 is in an open state, the power supply from the power receiving unit 101 to the component unit is interrupted.

[0074] The switching unit (such as the first switching unit 103 and the second switching unit 104) has both opening and closing functions. The switching unit can be an electronic component that can open a circuit, interrupt current, or divert current to other circuits. For example, the switching unit has one or more electronic contacts. A "closed" switch indicates that the electronic contacts are conducting, allowing current to flow; an "open" switch indicates that the electronic contacts are not conducting, forming an open circuit and preventing current from flowing. For example, the switching unit can be a switch in the form of a thyristor, transistor, single-pole double-throw switch, relay, etc., without limitation.

[0075] Optionally, component unit 105 may include at least one of the following: micro controller unit (MCU), battery charging related components (such as a charge / discharge unit (CDU) integrating a high-low voltage power conversion module (DC-DC), battery thermal management related components (such as a positive temperature coefficient heater (PTC) / climate control unit (CCU)), or air conditioning.

[0076] In some cases, component unit 105 operates in environments that meet certain conditions. For example, the operating voltage of component unit 105 is between 300V and 700V. When the voltage supplied to component unit 105 exceeds 700V, it may cause a decrease in the voltage withstand capability of component unit 105, making it prone to damage and increasing the cost of use. Replacing component unit 105 with a component that can withstand voltages above 700V would also lead to increased costs.

[0077] In the charging system described above, if the first switch unit 103 is in the closed state, the charging current flowing from the power receiving unit 101 is boosted by the current boosting unit 102. The boosted charging current then passes sequentially through the closed first switch unit 103 and the battery 106 before returning to the power receiving unit 101, forming a charging circuit to charge the battery 106. In this charging circuit, the charging current for the battery 106 is increased compared to the charging current output by the power receiving unit, thereby reducing the charging time of the battery 106, improving its charging efficiency, and enhancing the user experience.

[0078] If the charging current transmitted from the charging module to the receiving unit 101 is a high-voltage current (such as 800V or 1000V), when the receiving unit 101 supplies power to the component unit 105, this high-voltage current may cause the component unit 105 to lose its voltage withstand capability and become easily damaged. In view of this, the charging system provided in this application includes a second switching unit 104. The second switching unit is used to interrupt the power supply from the receiving unit 101 to the component unit 105, thereby interrupting the high-voltage current provided by the receiving unit 101 to the component unit 105. This improves the voltage withstand capability of the component unit 105, reduces the possibility of damage to the component unit 105, and lowers the cost of use.

[0079] The following is combined Figure 2 , Figure 3 right Figure 1 The booster unit 102 in the charging system shown is illustrated by way of example.

[0080] like Figure 2 As shown, the boost unit 102 comprises three pairs of switching transistor bridge arms (i.e., bridge arm converters 1021) and three inductors (such as inductor group 1022). Figure 2 The charging and energy storage circuit shown operates as follows: when the lower arm of the bridge arm converter 1021 is open and the upper arm is closed, the charging current originates from the positive terminal of the receiving unit 101 and the bus capacitor C1, passes through the upper arms of the bridge arm converter 1021 (first upper arm VT1, second upper arm VT2, and third upper arm VT3), the inductor group 1022, and the first switch unit 103 in a closed state, and then charges the positive terminal of the battery 106. The current then flows out from the negative terminal of the battery 106 back to the negative terminal of the receiving unit 101. In some embodiments, the first upper arm VT1, the second upper arm VT2, and the third upper arm VT3 can be simultaneously activated, resulting in a larger current after passing through the booster unit 102. Optionally, when this charging system is applied to an electric vehicle, the inductor group 1022 can be the motor windings in the drive motor of the electric vehicle.

[0081] like Figure 3 The charging freewheeling circuit shown operates as follows: when the upper arm of the bridge arm converter 1021 is open and the lower arm is closed, current flows out from the positive terminal of the inductor group 1022, through the first switching unit 103 (which is in a closed state), the battery 106, and the lower arms of the bridge arm converter 1021 (first lower arm VT4, second lower arm VT5, and third lower arm VT6), and flows back to the negative terminal of the inductor group 1022. In some embodiments, the first lower arm VT4, the second lower arm VT5, and the third lower arm VT6 can be turned on simultaneously, resulting in a larger current after passing through the booster unit 102.

[0082] Figure 2 and Figure 3 The booster unit 102 shown can reduce the voltage of the charging current from the power receiving unit 101 and increase the charging current from the power receiving unit 101. For example, if the charging current flowing out of the power receiving unit 101 is 250A and 1000V, after passing through the booster unit 102, the 250A and 1000V charging current becomes 500A and 500V charging current. That is, the 250A and 1000V charging current is converted into 500A and 500V charging current, which reduces the voltage of the charging current and increases the current.

[0083] The following describes some possible designs of embodiments of this application.

[0084] In some embodiments, component unit 105 needs to remain powered. For example, component unit 105 includes battery charging-related components (such as a CDU with integrated DC-DC converter) and / or battery thermal management-related components (such as a PTC / CCU). During the charging of battery 106, these components need to remain powered to ensure that the charging-related operations are functioning properly.

[0085] When the second switching unit 104 in the charging system is in the off state, the power supply from the receiving unit 101 to the component unit 105 is interrupted. At this time, another energy source is needed to power the component unit 105 so that it remains powered. In one possible implementation, the battery 106 can serve as an energy source to power the component unit 105. For example, combined with... Figure 4 The battery 106 is connected to the component unit 105 to form a circuit, and the battery 106 is used to power the component unit 105.

[0086] In some possible implementations, the circuit for supplying power from battery 106 to component unit 105 may include a switching unit (which may be referred to as a third switching unit for ease of description). The third switching unit is used to interrupt the power supply from battery 106 to component unit 105, for example, interrupting the power supply from battery 106 to component unit 105 when the third switching unit is in an open state. Exemplarily, the charging system also includes a third switching unit 107, with battery 106 connected to component unit 105, component unit 105 connected to the third switching unit 107, and the third switching unit 107 connected to battery 106. Battery 106 outputs a supply current, which passes sequentially through component unit 105 and the closed-state third switching unit 107 before returning to battery 106, thereby enabling battery 106 to supply power to component unit 105. The third switching unit is used to interrupt the power supply from battery 106 to component unit 105, for example, interrupting the power supply from battery 106 to component unit 105 when the third switching unit 107 is in an open state.

[0087] The third switch unit 107 can be positioned in various ways within the charging system. Two possible designs are described below.

[0088] Design 1, combined with Figure 5 The third switching unit 107 is disposed in another charging circuit in which the power receiving unit 101 charges the battery 106. That is, the power receiving unit 101 is connected to the second switching unit 104, the second switching unit 104 is connected to the third switching unit 107, the third switching unit 107 is connected to the battery 106, and the battery 106 is connected to the power receiving unit 101. The charging current from the power receiving unit 101 charging the battery 106 can also sequentially pass through the second switching unit 104 (which is in a closed state) and the third switching unit 107 (which is in a closed state). Figure 5When both the second switch unit 104 and the third switch unit 107 shown are in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 can pass through the second switch unit 104 in the closed state, the third switch unit 107 in the closed state and the battery 106 in sequence and then return to the power receiving unit, so as to realize that the charging current output by the power receiving unit 101 charges the battery 106. For ease of description, this charging method can be called the first normal charging mode.

[0089] Based on the previous description of charging, when the first switch unit 103 is in the closed state, the charging current of the receiving unit 101 for charging the battery 106 passes through the boosting unit 102, the first switch unit 103 in the closed state, and the battery 106 in sequence before returning to the receiving unit. By stepping down the voltage and boosting the current of the charging current transmitted to the receiving unit 101, the battery 106 can be charged. This can decouple the voltage of the receiving unit 101 from the voltage of the battery 106, improve the charging speed and efficiency, and for ease of description, this charging method can be called buck-boost charging mode.

[0090] In conclusion, when Figure 5 When the first switch unit 103, the second switch unit 104 and the third switch unit 107 shown are all in the closed state, there are two charging circuits for the battery 106 to be charged by the power receiving unit 101. It should be noted that the first switch unit 103 and the second switch unit 104 cannot be in the closed state at the same time.

[0091] For example, combined Figure 5 The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the boosting unit 102. For example, when the first switching unit 103 is in the open state, it interrupts the charging current output by the power receiving unit 101 after passing through the boosting unit 102 and then through the battery 106, thus interrupting the circuit of the power receiving unit 101 charging the battery 106 through the boosting unit 102, and the buck-boost charging mode is turned off. At this time, if both the second switching unit 104 and the third switching unit 107 are in the closed state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104, the closed third switching unit 107, and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 by the charging current output by the power receiving unit 101, that is, the first normal charging mode is turned on. In other words, when the first switch unit 103 is in the open state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the second switch unit 104 in the closed state, the third switch unit 107 in the closed state and the battery 106 in sequence before returning to the power receiving unit, so as to realize the charging of the battery 106.

[0092] To reiterate, in combination Figure 5When the second switching unit 104 is in the open state, the charging current output by the power receiving unit 101 is interrupted from passing through the second switching unit 104 and the battery 106, thus interrupting the circuit for the power receiving unit 101 to charge the battery 106 through the second switching unit 104, and the first normal charging mode is turned off. At this time, if the first switching unit 103 is in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the boosting unit 102, the closed first switching unit 103, and the battery 106 in sequence before returning to the power receiving unit, realizing that the battery 106 is charged with the charging current after passing through the boosting unit 102, that is, the buck-boost charging mode is turned on.

[0093] exist Figure 5 In the charging system shown, when the second switch unit 104 is in the open state and both the first switch unit 103 and the third switch unit 107 are in the closed state, the receiving unit 101 can not only charge the battery 106 through the buck-boost charging mode, but the battery 106 can also supply power to the component unit 105 through the closed third switch unit 107, keeping the component unit 105 in a powered state. At this time, in the high-voltage architecture of the charging system, only the boost unit 102 needs to be able to withstand the high voltage of the receiving unit 101; the other component units 105 still maintain the same voltage as the battery 106.

[0094] Design 2, combined with Figure 6 The third switching unit 107 is not located in the other charging circuit where the power receiving unit 101 charges the battery 106. That is, the power receiving unit 101 is connected to the second switching unit 104, the second switching unit 104 is connected to the battery 106, and the battery 106 is connected to the power receiving unit 101. The charging current from the power receiving unit 101 to charge the battery 106 passes through the second switching unit 104 (which is in a closed state) and does not need to pass through the third switching unit 107. When... Figure 6 When the second switch unit 104 shown is in the closed state, the charging current of the power receiving unit 101 charging the battery 106 can pass through the second switch unit 104 and the battery 106 in sequence and then return to the power receiving unit, so as to realize that the charging current output by the power receiving unit 101 charges the battery 106. For ease of description, this charging method can be called the second normal charging mode.

[0095] Similarly, when Figure 6 When both the first switch unit 103 and the second switch unit 104 shown are in the closed state, there are two circuits for the power receiving unit 101 to charge the battery 106. It should be noted that the first switch unit 103 and the second switch unit 104 cannot be in the closed state at the same time.

[0096] For example, combined Figure 6The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the boosting unit 102. For example, when the first switching unit 103 is in the open state, it interrupts the charging current output by the power receiving unit 101 after passing through the boosting unit 102 and then through the battery 106, thus interrupting the circuit of the power receiving unit 101 charging the battery 106 through the boosting unit 102, and the buck-boost charging mode is turned off. At this time, if the second switching unit 104 is in the closed state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104 and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 by the charging current output by the power receiving unit 101, that is, the second normal charging mode is turned on. In other words, when the first switching unit 103 is in the open state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104 and the battery 106 in sequence before returning to the power receiving unit, so as to realize the charging of the battery 106.

[0097] To reiterate, in combination Figure 6 When the second switching unit 104 is in the open state, the charging current output by the power receiving unit 101 is interrupted from passing through the second switching unit 104 and the battery 106, thus interrupting the circuit for the power receiving unit 101 to charge the battery 106 through the second switching unit 104, and the second normal charging mode is turned off. At this time, if the first switching unit 103 is in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the boosting unit 102, the closed first switching unit 103, and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 with the charging current after passing through the boosting unit 102, that is, the buck-boost charging mode is turned on.

[0098] exist Figure 6 In the charging system shown, when the second switch unit 104 is in the open state and the first switch unit 103 and the third switch unit 107 are both in the closed state, the power receiving unit 101 can not only charge the battery 106 through the buck-boost charging mode, but the battery 106 can also supply power to the component unit 105 through the third switch unit 107 in the closed state, thus maintaining the component unit 105 in the power supply state.

[0099] In the above example, the circuit in which battery 106 supplies power to component unit 105 includes a switching unit closer to the negative terminal of battery 106 (such as a third switching unit). However, in some cases, the switching unit in the circuit may be closer to the positive terminal of battery 106 (for ease of description, it can be referred to as a fourth switching unit). The fourth switching unit is used to interrupt the power supply from battery 106 to component unit 105. For example, when the fourth switching unit is in an open state, the power supply from battery 106 to component unit 105 can be interrupted. Exemplarily, the charging system also includes a fourth switching unit 108, with battery 106 connected to the fourth switching unit 108, the fourth switching unit 108 connected to component unit 105, and component unit 105 connected to battery 106. Battery 106 outputs a supply current, which passes sequentially through the fourth switching unit 108 (in a closed state) and component unit 105 before returning to battery 106, thus enabling battery 106 to supply power to component unit 105. The fourth switch unit 108 is used to interrupt the power supply of the battery 106 to the component unit 105. For example, when the fourth switch unit 108 is in the open state, the power supply of the battery 106 to the component unit 105 is interrupted.

[0100] The fourth switch unit 108 can be positioned in various ways in the charging system. Two possible scenarios are described below.

[0101] Scenario 1, combined with Figure 7 The fourth switching unit 108 is disposed in another charging circuit in which the power receiving unit 101 charges the battery 106. That is, the power receiving unit 101 is connected to the second switching unit 104, the second switching unit 104 is connected to the fourth switching unit 108, the fourth switching unit 108 is connected to the battery 106, and the battery 106 is connected to the power receiving unit 101. The charging current from the power receiving unit 101 charging the battery 106 can also sequentially pass through the second switching unit 104 (which is in a closed state) and the fourth switching unit 108 (which is in a closed state). Figure 7 When both the second switch unit 104 and the fourth switch unit 108 shown are in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 can pass through the second switch unit 104 in the closed state, the fourth switch unit 108 in the closed state and the battery 106 in sequence and then return to the power receiving unit, so as to realize that the charging current output by the power receiving unit 101 charges the battery 106. For ease of description, this charging method can be called the third normal charging mode.

[0102] Similarly, when Figure 7 When the first switch unit 103, the second switch unit 104 and the fourth switch unit 108 shown are all in the closed state, there are two charging circuits where the power receiving unit 101 charges the battery 106. It should be noted that the first switch unit 103 and the second switch unit 104 cannot be in the closed state at the same time.

[0103] For example, combined Figure 7 The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the boosting unit 102. For example, when the first switching unit 103 is in the open state, it interrupts the charging current output by the power receiving unit 101 after passing through the boosting unit 102 and then through the battery 106, thus interrupting the circuit of the power receiving unit 101 charging the battery 106 through the boosting unit 102, and the buck-boost charging mode is turned off. At this time, if both the second switching unit 104 and the fourth switching unit 108 are in the closed state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104, the closed fourth switching unit 108, and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 by the charging current output by the power receiving unit 101, that is, the third normal charging mode is turned on. In other words, when the first switch unit 103 is in the open state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the second switch unit 104 in the closed state, the fourth switch unit 108 in the closed state and the battery 106 in sequence before returning to the power receiving unit, so as to realize the charging of the battery 106.

[0104] To reiterate, in combination Figure 7 When the second switch unit 104 is in the open state, the charging current output by the power receiving unit 101 is interrupted from passing through the second switch unit 104 and the battery 106, thus interrupting the circuit for the power receiving unit 101 to charge the battery 106 through the second switch unit 104, and the third normal charging mode is turned off. At this time, if the first switch unit 103 is in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the boost unit 102, the closed first switch unit 103, and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 with the charging current after passing through the boost unit 102, that is, the buck-boost charging mode is turned on.

[0105] exist Figure 7 In the charging system shown, when the second switch unit 104 is in the open state and the first switch unit 103 and the fourth switch unit 108 are both in the closed state, the power receiving unit 101 can not only charge the battery 106 through the buck-boost charging mode, but the battery 106 can also supply power to the component unit 105 through the fourth switch unit 108 in the closed state, thus maintaining the component unit 105 in the power supply state.

[0106] Scenario 2, combined with Figure 8The fourth switching unit 108 is not located in the other charging circuit where the power receiving unit 101 charges the battery 106. That is, the power receiving unit 101 is connected to the second switching unit 104, the second switching unit 104 is connected to the battery 106, and the battery 106 is connected to the power receiving unit 101. The charging current from the power receiving unit 101 to charge the battery 106 passes through the second switching unit 104 (which is in a closed state) and does not need to pass through the fourth switching unit 108. Figure 8 When the second switch unit 104 shown is in the closed state, the charging current of the power receiving unit 101 charging the battery 106 can pass through the second switch unit 104 and the battery 106 in sequence and then return to the power receiving unit, so as to charge the battery 106 with the charging current output by the power receiving unit 101. For ease of description, this charging method can be called the fourth normal charging mode.

[0107] Similarly, when Figure 8 When both the first switch unit 103 and the second switch unit 104 shown are in the closed state, there are two circuits for the power receiving unit 101 to charge the battery 106. It should be noted that the first switch unit 103 and the second switch unit 104 cannot be in the closed state at the same time.

[0108] For example, combined Figure 8 The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the boosting unit 102. For example, when the first switching unit 103 is in the open state, it interrupts the charging current output by the power receiving unit 101 after passing through the boosting unit 102 and then through the battery 106, thus interrupting the circuit of the power receiving unit 101 charging the battery 106 through the boosting unit 102, and the buck-boost charging mode is turned off. At this time, if the second switching unit 104 is in the closed state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104 and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 by the charging current output by the power receiving unit 101, that is, the fourth normal charging mode is turned on. In other words, when the first switching unit 103 is in the open state, the charging current of the power receiving unit 101 charging the battery 106 passes through the closed second switching unit 104 and the battery 106 in sequence before returning to the power receiving unit, so as to realize the charging of the battery 106.

[0109] To reiterate, in combination Figure 8When the second switch unit 104 is in the open state, the charging current output by the power receiving unit 101 is interrupted from passing through the second switch unit 104 and the battery 106, thus interrupting the circuit for the power receiving unit 101 to charge the battery 106 through the second switch unit 104, and the fourth normal charging mode is turned off. At this time, if the first switch unit 103 is in the closed state, the charging current of the power receiving unit 101 to charge the battery 106 passes through the boost unit 102, the closed first switch unit 103, and the battery 106 in sequence before returning to the power receiving unit, realizing the charging of the battery 106 with the charging current after passing through the boost unit 102, that is, the buck-boost charging mode is turned on.

[0110] exist Figure 8 In the charging system shown, when the second switch unit 104 is in the open state and the first switch unit 103 and the fourth switch unit 108 are both in the closed state, the power receiving unit 101 can not only charge the battery 106 through the buck-boost charging mode, but the battery 106 can also supply power to the component unit 105 through the fourth switch unit 108 in the closed state, thus maintaining the component unit 105 in the power supply state.

[0111] In some embodiments, the opening and closing of the switching units (such as the first switching unit 103, the second switching unit 104, the third switching unit 107, and the fourth switching unit 108) can be controlled, for example, the switching unit opens or closes after receiving a control signal.

[0112] Combination Figure 9The charging system also includes a control unit 109, which is connected to the first switching unit 103. The control unit 109 sends a first control signal to the first switching unit 103 when a first condition is met. The first control signal controls the first switching unit 103 to close. The first condition includes that the maximum value of the current output by the receiving unit 101 is less than or equal to the requested current of the battery 106, and the maximum value of the voltage output by the receiving unit 101 is greater than the maximum voltage that the battery 106 can withstand. In other words, the current output by the receiving unit 101 is too small to meet the charging requirements of the battery 106. The maximum value of the current output by the receiving unit 101 can be understood as the maximum output current that the charging module connected to the receiving unit 101 can output to the receiving unit 101, and the maximum value of the voltage output by the receiving unit 101 can be understood as the maximum output voltage that the charging module connected to the receiving unit 101 can output to the receiving unit 101. Therefore, when the first condition is met, the control unit controls the first switching unit 103 to close via the first control signal, thus, as mentioned above, the buck-boost charging mode is activated. At this time, compared with the current output by the power receiving unit 101, the voltage of the charging current used to charge the battery 106 is reduced, but the current is increased to meet the charging requirements of the battery 106, thereby improving the charging speed and efficiency of the battery 106. Optionally, the first condition also includes that the maximum value of the current output by the power receiving unit 101 is less than or equal to the maximum value of the current output by the current boosting unit 102, that is, the current boosting unit 102 can increase the current output by the power receiving unit 101. For example, if the maximum value of the current output by the power receiving unit 101 is 250A and the maximum value of the current output by the current boosting unit 102 is 400A, the current boosting unit 102 can increase the current output by the power receiving unit 101 to a maximum of 400A.

[0113] Optionally, if the first condition is not met, the control unit 109 sends a fifth control signal to the first switching unit 103, which controls the first switching unit 103 to open. The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the current boosting unit 102. For example, when the first switching unit 103 is in the open state, the charging of the battery 106 by the power receiving unit 101 through the current boosting unit 102 is interrupted.

[0114] For example, the control unit 109 may be a battery management system (BMS), a micro controller unit (MCU) in the BMS, or an electronic control unit (ECU) in the BMS.

[0115] In some cases, combined with Figure 9The control unit 109 is also connected to the second switching unit 104. The control unit 109 is further configured to send a second control signal to the second switching unit 104 when a second condition is met. This second control signal controls the second switching unit 104 to disconnect. The second condition includes the maximum value of the voltage output by the power receiving unit 101 exceeding the maximum voltage that the component unit 105 can withstand. In other words, if the voltage output by the power receiving unit 101 is too high, exceeding the maximum withstand capability of the component unit 105, it may cause a decrease in the voltage withstand capability of the component unit 105, making it prone to damage. Therefore, when the second condition is met, the control unit 109 controls the second switching unit 104 to disconnect via the second control signal. In conjunction with the preceding text, this disconnects the power supply circuit from the power receiving unit 101 to the component unit 105, interrupting the high-voltage current supplied by the power receiving unit 101 to the component unit 105. This improves the voltage withstand capability of the component unit 105, reduces the possibility of damage to the component unit 105, and lowers the operating cost.

[0116] Optionally, if the second condition is not met, the control unit 109 sends a sixth control signal to the second switch unit 104, which is used to control the second switch unit 104 to close.

[0117] In some other cases, combined with Figure 9 The control unit 109 is also connected to the third switching unit 107. The control unit 109 is further configured to send a third control signal to the third switching unit 107 when a third condition and / or a fourth condition are met. The third control signal controls the third switching unit 107 to disconnect. The third condition includes that the remaining charge of the battery 106 is less than a charge threshold, meaning the battery 106 has low remaining charge and may not be able to continue supplying power to the component unit 105. The fourth condition includes that the component unit 105 is in a fault state, meaning the component unit 105 cannot continue to operate normally. In this case, the component unit 105 does not need to maintain a power supply state, and the battery 106 does not need to continue supplying power to the component unit 105. And / or, the fourth condition includes that the component unit 105 has no power supply requirement, in which case the component unit 105 does not need to maintain a power supply state, and the battery 106 does not need to continue supplying power to the component unit 105. Therefore, when the third condition and / or the fourth condition are met, the control unit 109 controls the third switch unit 107 to disconnect via the third control signal. In conjunction with the preceding text, this disconnects the circuit for the battery 106 to supply power to the component unit 105, thus interrupting the power supply from the battery 106 to the component unit 105.

[0118] Optionally, if the third condition and the fourth condition are not met, the control unit 109 sends a seventh control signal to the third switch unit 107, which is used to control the third switch unit 107 to close.

[0119] Similarly, Figure 6The charging system shown may also include a control unit 109, as described above. Figure 9 The relevant descriptions in the text will not be repeated here.

[0120] Similarly, combined Figure 10 The charging system may also include a control unit 109, which is connected to the first switch unit 103 and the second switch unit 104. The control unit 109 controls the opening and closing of the first switch unit 103 and the second switch unit 104, as described above. Figure 9 The relevant descriptions in the document will not be repeated here.

[0121] Combination Figure 10 The control unit 109 is also connected to the fourth switching unit 108. The control unit 109 is further configured to send a fourth control signal to the fourth switching unit 108 when the third condition and / or the fourth condition are met. The fourth control signal controls the fourth switching unit 108 to disconnect. The third and fourth conditions are as described above. When the third condition and / or the fourth condition are met, the control unit 109 controls the fourth switching unit 108 to disconnect via the fourth control signal. In conjunction with the foregoing, this disconnects the circuit for power supply from the battery 106 to the component unit 105, interrupting the power supply from the battery 106 to the component unit 105.

[0122] Optionally, if the third condition and the fourth condition are not met, the control unit 109 sends an eighth control signal to the fourth switch unit 108, which is used to control the fourth switch unit 108 to close.

[0123] Similarly, Figure 8 The charging system shown may also include a control unit 109, as described above. Figure 9 and Figure 10 The relevant descriptions in the text will not be repeated here.

[0124] In some embodiments, the units in the charging system described above can be set up independently. For example, the second switching unit 104 can be set up separately in the power distribution device, independent of other units in the charging system. In yet other embodiments, some units in the charging system can be integrated together. For example, the second switching unit 104 can be integrated into the current boosting unit 102. Furthermore, the second switching unit 104 can be integrated into the battery 106.

[0125] In some embodiments, Figure 5 The charging system shown may also include other components, combined with Figure 11The charging system may further include a fifth switching unit 110, a sixth switching unit 111, a seventh switching unit 112, and a pre-charge unit 113. At least one of the fifth switching unit 110, the sixth switching unit 111, and the seventh switching unit 112 is used to interrupt the charging of the battery 106 by the power receiving unit 101. For example, when at least one of the fifth switching unit 110, the sixth switching unit 111, and the seventh switching unit 112 is in the open state, the charging of the battery 106 by the power receiving unit 101 is interrupted.

[0126] The fifth switch unit 110 and the sixth switch unit 111 can be located at the positive and negative terminals of the power receiving unit 101, respectively. For example, the fifth switch unit 110 is located at the positive terminal of the power receiving unit 101, and the sixth switch unit 111 is located at the negative terminal of the power receiving unit 101. The charging current of the power receiving unit 101 can flow out from the sixth switch unit 111 in the closed state, pass through the current boosting unit 102, the first switch unit 103 in the closed state, the battery 106, and the seventh switch unit 112 in the closed state, and then return to the power receiving unit 101 through the fifth switch unit 110 in the closed state, so as to charge the battery 106.

[0127] The operation of the precharge unit 113 is described below.

[0128] Based on the previous description of the current boosting unit 102, it includes a capacitor C1. Without pre-charging, the seventh switching unit 112 and the third switching unit 107 will be directly connected to capacitor C1. Taking the seventh switching unit 112 and the third switching unit 107 as a relay as an example, since the battery 106 voltage is relatively high while the voltage across capacitor C1 is close to 0, this will cause a momentary short circuit. At this time, the load resistance in the circuit is mainly composed of the resistance of the wires and the relay contacts, and its resistance value is very small. According to Ohm's law, the combination of high voltage and low resistance will generate a momentary current of up to tens of thousands of amperes, which will damage the relay.

[0129] Therefore, by incorporating a pre-charging process, the relay in the seventh switching unit 112 is first disconnected, while the pre-charging circuit formed by the pre-charging switch (such as the pre-charging relay) and the pre-charging resistor in the pre-charging unit 113 is first connected. Taking a resistance value of 200Ω or higher in this pre-charging circuit as an example, assuming a circuit voltage of 310.8V, the maximum current in the circuit is only 1.55A. If the capacity of the pre-charging relay exceeds 2A, the pre-charging circuit is safe.

[0130] During the pre-charging process, the relay in the seventh switching unit 112 is disconnected, while the pre-charging circuit formed by the pre-charging switch (such as the pre-charging relay) and the pre-charging resistor in the pre-charging unit 113 is connected. The resistance of this pre-charging circuit is usually much greater than that of the main circuit, so the current in the pre-charging circuit is relatively small. As pre-charging progresses, the voltage across capacitor C1 gradually increases, while the current in the pre-charging circuit gradually decreases. When the voltage across capacitor C1 reaches a preset value, the pre-charging switch (such as the pre-charging relay) is disconnected, and the relay in the seventh switching unit 112 is then connected, thus completing the entire pre-charging process.

[0131] The pre-charging operation of the aforementioned pre-charge unit 113 effectively protects key components such as capacitor C1 and the switching unit, preventing damage to capacitor C1 or other devices due to excessive instantaneous current at the moment of direct power-on. Through the current-limiting function of the pre-charge unit 113, the pre-charge circuit ensures the safe and stable operation of the charging system.

[0132] Similarly, Figure 6 The charging system shown may also include other components, combined with Figure 12 The charging system may also include a fifth switching unit 110, a sixth switching unit 111, a seventh switching unit 112, and a pre-charge unit 113, as described above. Figure 11 The relevant descriptions in the text will not be repeated here.

[0133] Similarly, Figure 7 The charging system shown may also include other components, combined with Figure 13 The charging system may further include a fifth switching unit 110, a sixth switching unit 111, an eighth switching unit 114, and a pre-charge unit 113. At least one of the fifth switching unit 110, the sixth switching unit 111, and the eighth switching unit 114 is used to interrupt the charging of the battery 106 by the power receiving unit 101. When at least one of the fifth switching unit 110, the sixth switching unit 111, and the eighth switching unit 114 is in the open state, the charging of the battery 106 by the power receiving unit 101 is interrupted.

[0134] The fifth switch unit 110 and the sixth switch unit 111 can be located at the positive and negative terminals of the power receiving unit 101, respectively. For example, the fifth switch unit 110 is located at the positive terminal of the power receiving unit 101, and the sixth switch unit 111 is located at the negative terminal of the power receiving unit 101. The charging current of the power receiving unit 101 can flow out from the fifth switch unit 110 in the closed state, pass through the current boosting unit 102, the first switch unit 103 in the closed state, the battery 106, and the eighth switch unit 114 in the closed state in sequence, and then return to the power receiving unit 101 through the sixth switch unit 111 in the closed state, so as to charge the battery 106.

[0135] Figure 13 The operation of the precharge unit 113 shown is the same as described above. Figure 11 The operation of the precharge unit 113 shown is similar, and will not be described again here.

[0136] Similarly, Figure 8 The charging system shown may also include other components, combined with Figure 14 The charging system may also include a fifth switching unit 110, a sixth switching unit 111, an eighth switching unit 114, and a pre-charge unit 113, as described above. Figure 13 and Figure 11 The relevant descriptions in the text will not be repeated here.

[0137] The methods of the embodiments of this application will be described in detail below.

[0138] Please see Figure 15 , Figure 15 This is a schematic flowchart illustrating a charging control method provided in an embodiment of this application. Optionally, this method can be applied to a charging system, for example, to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 or Figure 14 The charging system shown can be selected from Figure 9 or Figure 10 The control unit 109 in the charging system shown performs the operation.

[0139] like Figure 15 The charging control method shown may include step S1501. Step S1501 is as follows:

[0140] In step S1501, the control device sends a second control signal to the second switching unit when the second condition is met.

[0141] The control device can be a control unit, to... Figure 15 The charging control method shown is applied to Figure 9 or Figure 10 The charging system shown consists of Figure 9 or Figure 10 The control unit 109 in the charging system shown performs... Figure 15The charging control method shown is used as an example (i.e., the control device is the control unit 109 as an example). The charging system includes the control unit 109, the power receiving unit 101, the second switch unit 104, and the component unit 105.

[0142] The power receiving unit 101 is connected to the charging module and receives charging current from the charging module to charge the charging system. The power receiving unit 101 is also connected to the second switching unit 104, which is connected to the component unit 105. The component unit 105 is connected to the power receiving unit 101. After receiving the charging current, the current flows from the power receiving unit 101 through the second switching unit 104 (which is in a closed state) and the component unit 105 before returning to the power receiving unit 101, thus supplying power to the component unit 105.

[0143] The control unit 109 is connected to the second switch unit 104. When a second condition is met, the control unit 109 can send a second control signal to the second switch unit 104. The second control signal is used to control the second switch unit to open. The second switch unit 104 is used to interrupt the power supply from the power receiving unit 101 to the component unit. For example, when the second switch unit 104 is in the open state, the power supply from the power receiving unit 101 to the component unit is interrupted.

[0144] The second condition includes the maximum voltage output by the power receiving unit 101 being greater than the maximum voltage that the component unit 105 can withstand. In other words, if the voltage output by the power receiving unit 101 is too high, exceeding the maximum withstand capability of the component unit 105, it may lead to a decrease in the voltage withstand capability of the component unit 105, making it more susceptible to damage. Therefore, when the second condition is met, the control unit 109 controls the second switch unit 104 to disconnect via a second control signal. In conjunction with the preceding text, this disconnects the power supply circuit from the power receiving unit 101 to the component unit 105, interrupting the high-voltage current supplied by the power receiving unit 101 to the component unit 105. This improves the voltage withstand capability of the component unit 105, reduces the possibility of damage to the component unit 105, and lowers the operating cost.

[0145] Optionally, if the second condition is not met, the control unit 109 sends a sixth control signal to the second switch unit 104, which is used to control the second switch unit 104 to close.

[0146] In some cases, the charging system also includes a current boosting unit 102, a first switching unit 103, and a battery 106. The receiving unit 101 is connected to the current boosting unit 102, the current boosting unit 102 is connected to the first switching unit 103, the first switching unit 103 is connected to the battery 106, and the battery 106 is connected to the receiving unit 101. After the receiving unit 101 receives the charging current, when the first switching unit 103 is in a closed state, the charging current flowing from the receiving unit 101 passes sequentially through the current boosting unit 102, the closed first switching unit 103, and the battery 106 before returning to the receiving unit 101, forming a charging circuit to charge the battery 106.

[0147] The control unit 109 is connected to the first switch unit 103. Under the condition that the first condition is met, the control unit 109 can send a first control signal to the first switch unit 103. The first control signal is used to control the first switch unit 103 to close.

[0148] The first condition includes that the maximum value of the current output by the power receiving unit 101 is less than or equal to the requested current of the battery 106, and the maximum value of the voltage output by the power receiving unit 101 is greater than the maximum voltage that the battery 106 can withstand. In other words, the current output by the power receiving unit 101 is too small to meet the charging requirements of the battery 106. The maximum value of the current output by the power receiving unit 101 can be understood as the maximum output current that the charging module connected to the power receiving unit 101 can output to the power receiving unit 101, and the maximum value of the voltage output by the power receiving unit 101 can be understood as the maximum output voltage that the charging module connected to the power receiving unit 101 can output to the power receiving unit 101. Therefore, when the first condition is met, the control unit controls the first switch unit 103 to close via a first control signal, i.e., the buck-boost charging mode is activated. At this time, compared to the current output by the power receiving unit 101, the voltage is reduced but the current is increased to meet the charging requirements of the battery 106, thereby improving the charging speed and efficiency of the battery 106. Optionally, the first condition also includes that the maximum value of the current output by the power receiving unit 101 is less than or equal to the maximum value of the current output by the current boosting unit 102, that is, the current boosting unit 102 can boost the current output by the power receiving unit 101. For example, if the maximum value of the current output by the power receiving unit 101 is 250A and the maximum value of the current output by the current boosting unit 102 is 400A, the current boosting unit 102 can boost the current output by the power receiving unit 101 to a maximum of 400A.

[0149] Optionally, if the first condition is not met, the control unit 109 sends a fifth control signal to the first switching unit 103, which controls the first switching unit 103 to open. The first switching unit 103 is used to interrupt the charging of the battery 106 by the power receiving unit 101 through the current boosting unit 102. For example, when the first switching unit 103 is in the open state, the charging of the battery 106 by the power receiving unit 101 through the current boosting unit 102 is interrupted.

[0150] In some other cases, combined Figure 9 The charging system also includes a third switch unit 107. The battery 106 is connected to the component unit 105, the component unit 105 is connected to the third switch unit 107, and the third switch unit 107 is connected to the battery 106. The battery 106 is used to output power supply current. The power supply current passes through the component unit 105 and the closed third switch unit 107 in sequence before returning to the battery 106, so that the battery 106 supplies power to the component unit 105.

[0151] The control unit 109 is also connected to the third switch unit 107. When a third condition and / or a fourth condition is met, the control unit 109 can send a third control signal to the third switch unit 107. The third control signal is used to control the third switch unit 107 to disconnect. The third switch unit 107 is used to interrupt the power supply from the battery 106 to the component unit 105. For example, when the third switch unit 107 is in the disconnected state, the power supply from the battery 106 to the component unit 105 is interrupted.

[0152] The third condition includes that the remaining power of battery 106 is less than the power threshold, meaning that the remaining power of battery 106 is low and may not be able to continue supplying power to component unit 105. The fourth condition includes that component unit 105 is in a fault state, meaning that component unit 105 cannot continue to work normally. In this case, component unit 105 does not need to maintain a power supply state, and battery 106 does not need to continue supplying power to component unit 105. And / or, the fourth condition includes that component unit 105 has no power supply requirement. In this case, component unit 105 does not need to maintain a power supply state, and battery 106 does not need to continue supplying power to component unit 105. Therefore, when the third condition and / or the fourth condition are met, control unit 109 controls the third switch unit 107 to open via the third control signal. In conjunction with the foregoing, this disconnects the power supply circuit from battery 106 to component unit 105, interrupting the power supply from battery 106 to component unit 105.

[0153] Optionally, if the third condition and the fourth condition are not met, the control unit 109 sends a seventh control signal to the third switch unit 107, which is used to control the third switch unit 107 to close.

[0154] In some other cases, combined Figure 10The charging system also includes a fourth switching unit 108. The battery 106 is connected to the fourth switching unit 108, which is connected to the component unit 105. The component unit 105 is connected to the battery 106. The battery 106 is used to output power supply current. The power supply current passes through the fourth switching unit 108 and the component unit 105 in a closed state and then returns to the battery 106, so that the battery 106 supplies power to the component unit 105.

[0155] The control unit 109 is also connected to the fourth switching unit 108. The control unit 109 is further configured to send a fourth control signal to the fourth switching unit 108 when a third condition and / or a fourth condition is met. The fourth control signal controls the fourth switching unit 108 to disconnect. The fourth switching unit 108 is configured to interrupt the power supply from the battery 106 to the component unit 105; for example, when the fourth switching unit 108 is in the disconnected state, the power supply from the battery 106 to the component unit 105 is interrupted.

[0156] The third and fourth conditions are described in the foregoing. When the third condition and / or the fourth condition is met, the control unit 109 controls the fourth switch unit 108 to disconnect via the fourth control signal. In conjunction with the foregoing, this disconnects the circuit for the battery 106 to supply power to the component unit 105, thus interrupting the power supply from the battery 106 to the component unit 105.

[0157] Optionally, if the third condition and the fourth condition are not met, the control unit 109 sends an eighth control signal to the fourth switch unit 108, which is used to control the fourth switch unit 108 to close.

[0158] Optionally, the charging system can be located in the vehicle. When the vehicle is in motion, not charging, all the energy of the vehicle comes from the battery 106 in the charging system. If the battery 106 is not a high-voltage platform (800V to 1000V), in order to ensure that all component units 105 can work normally, the third switch unit 107 or the fourth switch unit 108 needs to be closed to complete the energy transfer. At this time, the voltage platform of the component units 105 of the vehicle is consistent with the voltage of the battery 106.

[0159] exist Figure 15 In the illustrated embodiment, the control device can send a second control signal to the second switch unit when the second condition is met, thereby controlling the second switch unit 104 to disconnect through the second control signal, disconnecting the power supply circuit from the power receiving unit 101 to the component unit 105, interrupting the high voltage current supplied by the power receiving unit 101 to the component unit 105, thereby improving the voltage withstand capability of the component unit 105, reducing the possibility of damage to the component unit 105, and reducing the cost of use.

[0160] Please see Figure 16, Figure 16 This is a schematic flowchart illustrating another charging control method provided in an embodiment of this application. Optionally, this method can be applied to a charging system, for example, to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 or Figure 14 The charging system shown.

[0161] like Figure 16 The charging control method shown may include steps S1 to S15. Steps S1 to S15 are detailed below:

[0162] S1, the power receiving unit sends its capability to the control unit.

[0163] The power receiving unit can be the power receiving unit 101 in the charging system described above, and the control unit can be the control unit 109 in the charging system described above.

[0164] The capabilities of the power receiving unit 101 include its maximum output voltage and maximum output current. Specifically, the maximum output current of the power receiving unit 101, i.e., the maximum value of the output current (which can be denoted as Izo for ease of description), can be understood as the maximum output current (which can be denoted as Izo_max) that the charging module connected to the power receiving unit 101 can output to the power receiving unit 101. Similarly, the maximum output voltage of the power receiving unit 101, i.e., the maximum value of the output voltage (which can be denoted as Vzo for ease of description), can be understood as the maximum output voltage (which can be denoted as Vzo_max) that the charging module connected to the power receiving unit 101 can output to the power receiving unit 101.

[0165] For example, after the charging module is connected to the power receiving unit 101, it can send a charger maximum output capability (CML) message to the control unit 109. The CML message includes the maximum output voltage and the maximum output current of the charging module. Accordingly, the control unit 109 receives the CML message and obtains the maximum output voltage and maximum output current of the charging module, that is, the capability of the power receiving unit 101. Optionally, the CML message also includes the minimum output voltage and minimum output current of the charging module.

[0166] Optionally, Figure 16 The charging control method shown also includes step S2.

[0167] S2, the boost unit sends the boost unit's capability to the control unit.

[0168] The boost unit can be the boost unit 102 in the charging system described above. The capabilities of the boost unit 102 include the maximum output voltage of the boost unit 102 (which may be referred to as Vbo_max for ease of description) and the maximum output current of the boost unit 102 (which may be referred to as Ibo_max for ease of description).

[0169] The input voltage of the boost unit 102 (which may be referred to as Vbin for ease of description) and the maximum output current of the boost unit 102 (which may be referred to as Ibin for ease of description).

[0170] The operation of the boost unit 102 must satisfy the power conservation formula, for example, Vbin*Ibin*η=Vzo*Izo. Where η is the operating efficiency of the boost unit 102.

[0171] S3, the control unit determines whether the first condition and the second condition are met.

[0172] The first condition includes that the maximum value of the current output by the power receiving unit 101 is less than or equal to the requested current of the battery 106, and the maximum value of the voltage output by the power receiving unit 101 is greater than the maximum voltage that the battery 106 can withstand. In other words, the current output by the power receiving unit 101 is too low to meet the charging requirements of the battery 106. Optionally, the first condition also includes that the maximum value of the current output by the power receiving unit 101 is less than or equal to the maximum value of the current output by the current boosting unit 102, meaning that the current boosting unit 102 can increase the current output by the power receiving unit 101.

[0173] The second condition includes the maximum voltage output by the power receiving unit 101 being greater than the maximum voltage that the component unit 105 can withstand. In other words, if the voltage output by the power receiving unit 101 is too high, exceeding the maximum withstand capability of the component unit 105, it may cause a decrease in the voltage withstand capability of the component unit 105, making it prone to damage.

[0174] If the first and second conditions are met, proceed to step S4; if the first and second conditions are not met, proceed to step S13.

[0175] S4, the control unit controls the first switch unit to close and controls the second switch unit to open.

[0176] The first switching unit can be the first switching unit 103 in the charging system described above, and the second switching unit can be the second switching unit 104 in the charging system described above.

[0177] Based on the preceding description, the control unit 109 controls the first switch unit 103 to close, i.e., the buck-boost charging mode is activated. Compared to the current output by the power receiving unit 101, the charging current for the battery 106 results in a lower voltage but a higher current to meet the charging needs of the battery 106, thereby improving the charging speed and efficiency of the battery 106. Optionally, the control unit 109 may send a first control signal to the first switch unit 103, which is used to control the first switch unit 103 to close.

[0178] Furthermore, the control unit 109 controls the second switch unit 104 to disconnect, breaking the power supply circuit from the power receiving unit 101 to the component unit 105 and interrupting the high-voltage current supplied by the power receiving unit 101 to the component unit 105. This improves the voltage withstand capability of the component unit 105, reduces the possibility of damage to the component unit 105, and lowers the operating cost. Optionally, the control unit 109 may send a second control signal to the second switch unit 104, which is used to control the second switch unit 104 to disconnect.

[0179] Optionally, Figure 16 The charging control method shown also includes steps S5 and S6.

[0180] S5, the control unit sends the first request to the current boosting unit.

[0181] The first request is used to request the start-up unit 102 to start working.

[0182] S6, the current boosting unit sends a second request to the power receiving unit.

[0183] The second request is used to request the current boosting unit 102 to start operating. For example, the second request includes the maximum output voltage (i.e., Vbo_max) and the maximum output current (i.e., Vbin_max) of the current boosting unit 102.

[0184] S7, the power receiving unit controls the output voltage of the power receiving unit to be the maximum output voltage of the boost unit, and the output current of the power receiving unit to be the maximum output current of the power receiving unit.

[0185] The power receiving unit 101 controls the output voltage of the power receiving unit 101 to be the maximum output voltage of the current boosting unit 102.

[0186] If the first condition includes the maximum value of the current output by the power receiving unit 101 being less than or equal to the maximum value of the current output by the current boosting unit 102, the power receiving unit 101 controls its output current to be its maximum output current. For example, the power receiving unit 101 outputs a constant current at its maximum output current.

[0187] S8, the control unit sends the first battery charging request to the booster unit.

[0188] The first battery charging request includes the requested battery voltage (which may be referred to as Vbatt for ease of description) and the requested battery current (which may be referred to as Ibatt for ease of description), and the battery may be battery 106 in the charging system described above.

[0189] The requested voltage of battery 106 is the maximum voltage that battery 106 is allowed to charge, and the requested current of battery 106 is the maximum current that battery 106 is allowed to charge.

[0190] Optionally, Figure 16 The charging control method shown also includes step S9.

[0191] S9, the receiving unit outputs charging current to the boosting unit.

[0192] When the first condition includes the maximum value of the current output by the power receiving unit 101 being less than or equal to the maximum value of the current output by the boosting unit 102, the charging current output by the power receiving unit 101 to the boosting unit 102 is the maximum output current of the power receiving unit 101.

[0193] The voltage output by the power receiving unit 101 to the current boosting unit 102 is the maximum output voltage of the current boosting unit 102.

[0194] S10, the booster unit controls the output voltage of the booster unit to be the requested voltage of the battery, and the output current of the booster unit is the output voltage of the receiving unit * the output current of the receiving unit * the efficiency / the requested voltage of the battery.

[0195] The booster unit 102 controls the output voltage of the booster unit 102 (which can be referred to as Vzo for ease of description) to be the requested voltage of the battery, that is, Vbo = Vbatt.

[0196] Based on the preceding text, the output current of the booster unit 102 (which can be referred to as Ibo for ease of description) is the output voltage of the receiving unit * the output current of the receiving unit * the efficiency / the requested voltage of the battery. The efficiency is the working efficiency (i.e., η) of the booster unit 102, i.e., Ibo = Vzo * Izo * η / Ibatt.

[0197] In some embodiments, the maximum output power of the booster unit 102 is the product of the smaller value between the requested voltage of the battery 106 and the output current of the booster unit 102 and the requested current of the battery 106, that is, the maximum output power of the booster unit 102 is Vbatt*min(Ibo, Ibatt), where min is the operation of taking the smaller value.

[0198] In some embodiments, the maximum input power of the booster unit 102 is the product of the smaller value between the requested voltage of the battery 106 and the output current of the booster unit 102 and the requested current of the battery 106, divided by the operating efficiency of the booster unit 102 (i.e., η). That is, the maximum input power of the booster unit 102 is Vbatt*min(Ibo, Ibatt) / η, where min is the smaller value operation.

[0199] The output current of the boost unit 102 needs to meet the following conditions:

[0200] Condition 1: The output current of the boost unit 102 divided by the number of buck-boost circuits is less than or equal to the continuous current requirement of one buck-boost circuit. (Based on the above...) Figure 2 and Figure 3 Taking the buck-boost circuit in the boost unit 102 shown as an example, it includes three buck-boost circuits. Each inductor is located in one buck-boost circuit, so Ibo / 3 ≤ the continuous current requirement of the buck-boost circuit. Taking the inductor as a motor as an example, the continuous current requirement of the buck-boost circuit is the same as the continuous current requirement of the motor control transistor.

[0201] Condition 2: The output current of the booster unit 102 is less than or equal to the current carrying capacity of the battery 106 (i.e., the battery's requested current Ibatt).

[0202] S11, the booster unit outputs charging current to the battery.

[0203] The charging current output by the booster unit 102 to the battery 106 is the output voltage of the receiving unit * the output current of the receiving unit * the efficiency / the requested voltage of the battery. Combining with the previous text, this means Ibo = Vzo * Izo * η / Ibatt.

[0204] The voltage output by the booster unit 102 to the battery 106 is the requested voltage of the battery, i.e., Vbo = Vbatt.

[0205] S12, if the first condition is not met, the control unit sends a third request to the current boosting unit.

[0206] The third request is used to request to exit the buck-boost mode, that is, the boost unit 102 stops outputting charging current to the battery 106 through the buck-boost mode.

[0207] During the charging process, the charging current and voltage required by battery 106 may vary. For example, during initial charging, battery 106 may request a charging current of 450A. After charging for a period of time, such as when the remaining battery capacity reaches 95% of its rated capacity, the requested charging current may become 100A. If the maximum output current of power receiving unit 101 is 250A, then the maximum output current of power receiving unit 101 is greater than the charging current requested by battery 106. That is, the maximum output current of power receiving unit 101 meets the charging requirements of battery 106, and there is no need to step down and boost the charging current output by power receiving unit 101. Therefore, it is necessary to request to exit the step-down and boost mode.

[0208] S13, the control unit sends a second battery charging request to the charging unit.

[0209] The second battery charging request includes the requested battery voltage (Vbatt) and the requested battery current (Ibatt). The requested battery voltage is the maximum voltage that the battery 106 is allowed to charge, and the requested battery current is the maximum current that the battery 106 is allowed to charge.

[0210] S14, the power receiving unit controls the output voltage of the power receiving unit to be the battery requested voltage, and the output current of the power receiving unit to be the battery requested voltage.

[0211] The power receiving unit 101 controls the output voltage of the power receiving unit 101 to be the battery requested voltage, and the output current of the power receiving unit 101 to be the battery requested voltage. That is, the power receiving unit 101 can directly output charging current to the battery 106 with the requested voltage and requested current of the battery 106.

[0212] S15, the control unit controls the first switch unit to open and controls the second switch unit to close.

[0213] In conjunction with the preceding text, the control unit 109 controls the first switching unit 103 to disconnect, thereby interrupting the circuit where the power receiving unit 101 charges the battery 106 through the boosting unit 102, and the buck-boost charging mode is turned off. Optionally, the control unit 109 may send a fifth control signal to the first switching unit 103, which is used to control the first switching unit 103 to disconnect.

[0214] In conjunction with the preceding text, the control unit 109 controls the second switch unit 104 to close, charging the battery 106 with the charging current output by the power receiving unit 101, i.e., the normal charging mode is activated. At this time, the electrical energy provided by the power receiving unit 101 can supply the battery 106 and all vehicle component units 105, and the voltage of the vehicle component units 105 remains consistent with the real-time battery voltage. The normal charging modes include the first, second, third, and fourth normal charging modes described above. Optionally, the control unit 109 can send a sixth control signal to the second switch unit 104, which is used to control the second switch unit 104 to close.

[0215] exist Figure 16 In the illustrated embodiment, the control unit can control the first switch unit to close when the first and second conditions are met. The charging current for the battery 106 is increased by the booster unit compared to the charging current output by the power receiving unit, thereby reducing the battery charging time, improving the battery charging efficiency, and enhancing the user experience.

[0216] Moreover, the control unit can control the second switch unit 104 to disconnect when the first and second conditions are met, thereby disconnecting the circuit that supplies power from the power receiving unit to the component unit and interrupting the high-voltage current supplied by the power receiving unit to the component unit. This can improve the voltage withstand capability of the component unit, reduce the possibility of damage to the component unit, and reduce the cost of use.

[0217] The methods of the embodiments of this application have been described in detail above. Below, some apparatuses for implementing the foregoing methods are described. It should be understood that the division of units in the apparatuses provided in the embodiments of this application is only a logical functional division; in actual implementation, they can be fully or partially integrated onto a single physical entity, or they can be physically separated.

[0218] Furthermore, the units or modules in the device can be implemented in the form of processor calling software. For example, the device includes a processor connected to a memory, which stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit of the device. The processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is either internal or external to the device.

[0219] Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all units can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functionality of some or all of the above units is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD), such as a field-programmable gate array (FPGA). This PLD can include a large number of logic gates, and the connection relationships between these logic gates can be configured through configuration files to achieve the functionality of some or all of the above units. All units of the above device can be implemented entirely through processor-invoked software, entirely through hardware circuits, or partially through processor-invoked software with the remaining parts implemented through hardware circuits.

[0220] In this application embodiment, a processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a central processing unit (CPU) or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. These logical relationships are fixed or reconfigurable. For example, the processor is a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. Therefore, each unit in the device can be one or more processors (or processing circuits) configured to implement the above methods, such as a CPU, GPU, microprocessor, DSP, ASIC, FPGA, or a combination of at least two of these processor types.

[0221] Furthermore, the units or modules in the above devices can be integrated in whole or in part, or they can be implemented independently. In one implementation, these units or modules are integrated together as a system-on-a-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or implementing the functions of the units in the device. The at least one processor may be of different types, such as CPU and FPGA.

[0222] Several possible devices are listed below.

[0223] Please see Figure 17 , Figure 17 This is a schematic diagram of the structure of a control device provided in an embodiment of this application, namely, control device 170. Optionally, the control device 170 can be an independent device; for example, the control device 170 can be a... Figure 9 or Figure 10 The control unit 109 in the charging system shown. Alternatively, the control device 170 can also be a component in a separate device (such as a node), such as a chip or integrated circuit. The control device 170 is used to implement the aforementioned... Figure 15 or Figure 16 The steps performed by the control unit in the charging control method shown.

[0224] like Figure 17 As shown, the control device 170 includes a transceiver module 1701. The transceiver module 1701 is used to perform one or more operations such as acquiring, receiving, listening, transmitting, and sending. For example, it is used to send a second control signal to a second switching unit when a second condition is met. The second control signal is used to control the second switching unit to disconnect. The second switching unit is used to interrupt the power supply from the powered unit to the component unit. The second condition includes the maximum value of the voltage output by the powered unit being greater than the maximum value of the voltage that the component unit can withstand. The powered unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the powered unit. The powered unit is used to receive charging current from the charging module.

[0225] It further includes other operations for implementing the charging control method.

[0226] For related descriptions, please refer to Figure 15 or Figure 16 The embodiments shown are described in detail here.

[0227] Please see Figure 18 , Figure 18This is a schematic diagram of the structure of a computing device provided in an embodiment of this application. A computing device is a device with processing capabilities. The device here can be a physical device, such as a server (e.g., a rack server) or a host, or it can be a virtual device, such as a virtual machine or a container.

[0228] like Figure 18 As shown, the computing device 180 includes a processor 1801, a memory 1802, and one or more programs, and may include a communication interface 1803. It should be understood that this application does not limit the number of processors and memories in the computing device 180.

[0229] Processor 1801 is a module that performs calculations and may include a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor (MP), a digital signal processor (DSP), a micro controller unit (MCU), or one or more integrated circuits for controlling the execution of programs in the above schemes.

[0230] Memory 1802 provides storage space, in which application data, user data, operating system, and computer programs can be optionally stored. Memory 1802 may include read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0231] The memory 1802 can exist independently and be connected to the processor 1801 via a bus. Alternatively, the memory 1802 can be integrated with the processor 1801.

[0232] The communication interface 1803 is used to provide information input or output to the at least one processor. And / or, the communication interface 1803 can be used to receive data transmitted externally and / or transmit data externally. The communication interface 1803 can be a wired link interface, such as an Ethernet cable, or a wireless link interface (Bluetooth, general wireless transmission, and other wireless communication technologies, etc.). Optionally, the communication interface 1803 may also include a transmitter (such as a radio frequency transmitter, antenna, etc.) or a receiver coupled to the interface.

[0233] In this embodiment, one or more programs are stored in the memory 1802 in the form of program code and configured to be executed by the processor 1801. The programs include those for implementing the aforementioned... Figure 15 or Figure 16 The instructions for the steps in the charging control method shown. Specifically, memory 1802 stores executable instructions, and processor 1801 executes these executable instructions to implement the aforementioned... Figure 15 or Figure 16 The instructions for the steps in the charging control method shown, that is, the instructions for performing the aforementioned steps, are stored in memory 1802. Figure 15 or Figure 16 The instructions for the charging control method shown.

[0234] This application embodiment also provides a terminal, which includes the aforementioned charging system, the aforementioned control device 170 or computing device 180, and is used to implement the aforementioned charging control method, for example... Figure 15 or Figure 16 The charging control method shown.

[0235] Optionally, the terminal can be a means of transportation, such as a car, truck, aircraft, drone, slow-moving transport vehicle, spacecraft, or ship, etc., for use in any possible scenario. This application does not impose any restrictions on this. The terminal can also be a robot.

[0236] This application also provides a computer program product containing instructions. The computer program product may be a software or program product containing instructions, capable of running on a computing device or stored on any usable medium. The computer program instructions are used to implement the aforementioned charging control method, for example... Figure 15 or Figure 16 The charging control method shown.

[0237] This application also provides a computer-readable storage medium. This computer-readable storage medium is used to store a computer program, the computer program including instructions for implementing the aforementioned charging control method, for example... Figure 15 or Figure 16 The charging control method shown.

[0238] The computer-readable storage medium can be any available medium that can be stored by a control device and / or computing device, or a data storage device such as a data center containing one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (e.g., solid-state drives).

[0239] In this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0240] In this application, "at least one" in the embodiments refers to one or more items, and "more than one" refers to two or more items. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c, (a and b), (a and c), (b and c), or (a and b and c), where a, b, and c can be single or multiple. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0241] Furthermore, unless otherwise stated, the use of ordinal numbers such as "first" and "second" in the embodiments of this application is for distinguishing multiple objects and is not for limiting the order, sequence, priority or importance of multiple objects.

[0242] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0243] Finally, it should be noted that 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 protection scope of the technical solutions of the embodiments of this application.

Claims

1. A charging system, characterized in that, The charging system includes: The unit includes a power receiving unit, a current boosting unit, a first switching unit, a second switching unit, component units, and a battery. The power receiving unit is connected to the current boosting unit and the second switching unit, the current boosting unit is connected to the first switching unit, the first switching unit is connected to the battery, and the battery is connected to the power receiving unit; the second switching unit is connected to the component unit, and the component unit is connected to the power receiving unit. The power receiving unit is used to receive charging current from the charging module. The charging current passes through the current boosting unit, the first switch unit in a closed state, and the battery in sequence before returning to the power receiving unit, so as to charge the battery. The second switching unit is used to interrupt the power supply from the power receiving unit to the component unit.

2. The charging system according to claim 1, characterized in that, The battery is connected to the component unit to form a circuit, and the battery is used to power the component unit.

3. The system according to claim 2, characterized in that, The charging system further includes a third switching unit, the battery is connected to the component unit, the component unit is connected to the third switching unit, and the third switching unit is connected to the battery; The battery is used to output power supply current, which passes through the component unit and the third switch unit in a closed state in sequence before returning to the battery, so as to power the component unit. Alternatively, the third switching unit is used to interrupt the battery's power supply to the component unit.

4. The system according to claim 3, characterized in that, The power receiving unit is connected to the second switching unit, the second switching unit is connected to the third switching unit, the third switching unit is connected to the battery, and the battery is connected to the power receiving unit; When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (which is in the closed state), the third switching unit (which is in the closed state), and the battery before returning to the power receiving unit, thereby charging the battery.

5. The system according to claim 2 or 3, characterized in that, The power receiving unit is connected to the second switching unit, the second switching unit is connected to the battery, and the battery is connected to the power receiving unit; When the first switching unit is in the open state, the charging current passes through the second switching unit, which is in the closed state, and the battery in sequence before returning to the power receiving unit to charge the battery.

6. The system according to claim 2, characterized in that, The charging system further includes a fourth switching unit, the battery is connected to the fourth switching unit, the fourth switching unit is connected to the component unit, and the component unit is connected to the battery; The battery is used to output power supply current. The power supply current passes sequentially through the fourth switch unit and the component unit in the closed state and then returns to the battery to power the component unit. Alternatively, the fourth switching unit is used to interrupt the battery's power supply to the component unit.

7. The system according to claim 6, characterized in that, The power receiving unit is connected to the second switching unit, the second switching unit is connected to the fourth switching unit, the fourth switching unit is connected to the battery, and the battery is connected to the power receiving unit; When the first switching unit is in the open state, the charging current passes sequentially through the second switching unit (which is in the closed state), the fourth switching unit (which is in the closed state), and the battery before returning to the power receiving unit, thereby charging the battery.

8. The system according to claim 2 or 6, characterized in that, The power receiving unit is connected to the second switching unit, the second switching unit is connected to the battery, and the battery is connected to the power receiving unit; When the first switching unit is in the open state, the charging current passes through the second switching unit, which is in the closed state, and the battery in sequence before returning to the power receiving unit to charge the battery.

9. The system according to any one of claims 1-8, characterized in that, The charging system also includes a control unit; The control unit is configured to send a first control signal to the first switch unit when a first condition is met, the first control signal being used to control the first switch unit to close. The first condition includes the maximum value of the current output by the power receiving unit being less than or equal to the requested current of the battery, and the maximum value of the voltage output by the power receiving unit being greater than the maximum value of the voltage that the battery can withstand.

10. The system according to claim 9, characterized in that, The control unit is further configured to send a second control signal to the second switching unit when the second condition is met, the second control signal being used to control the second switching unit to open; The second condition includes the maximum value of the voltage output by the power receiving unit being greater than the maximum value of the voltage that the component unit can withstand.

11. The system according to claim 9 or 10, characterized in that, The control unit is further configured to send a third control signal to the third switch unit when the third condition and / or the fourth condition are met, the third control signal being used to control the third switch unit to disconnect; Alternatively, the control unit is further configured to send a fourth control signal to the fourth switch unit when the third condition and / or the fourth condition is met, the fourth control signal being used to control the fourth switch unit to open; The third condition includes the remaining battery power being less than a power threshold. The fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

12. The system according to any one of claims 1-11, characterized in that, The second switching unit is integrated into the current boosting unit, or the second switching unit is integrated into the battery.

13. A charging control method, characterized in that, Applied to the charging system according to any one of claims 1-12, the charging system includes a control unit, a power receiving unit, a second switching unit, and a component unit; The power receiving unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the power receiving unit; the power receiving unit is used to receive charging current from the charging module. The method includes: If the second condition is met, a second control signal is sent to the second switching unit, and the second control signal is used to control the second switching unit to open. The second switching unit is used to interrupt the power supply from the power receiving unit to the component unit; The second condition includes the maximum value of the voltage output by the power receiving unit being greater than the maximum value of the voltage that the component unit can withstand.

14. The method according to claim 13, characterized in that, The charging system also includes a current boosting unit, a first switching unit, and a battery; The power receiving unit is connected to the current boosting unit, the current boosting unit is connected to the first switching unit, the first switching unit is connected to the battery, and the battery is connected to the power receiving unit. The method further includes: If the first condition is met, a first control signal is sent to the first switching unit, and the first control signal is used to control the first switching unit to close. When the first switch unit is in the closed state, the charging current passes through the booster unit, the first switch unit in the closed state, and the battery in sequence before returning to the power receiving unit to charge the battery. The first condition includes the maximum value of the current output by the power receiving unit being less than or equal to the requested current of the battery, and the maximum value of the voltage output by the power receiving unit being greater than the maximum value of the voltage that the battery can withstand.

15. The method according to claim 13 or 14, characterized in that, The charging system further includes a third switching unit, the battery is connected to the component unit, the component unit is connected to the third switching unit, and the third switching unit is connected to the battery; The method further includes: If the third condition and / or the fourth condition are met, a third control signal is sent to the third switching unit, the third control signal being used to control the third switching unit to open. The third switching unit is used to interrupt the battery's power supply to the component unit; The third condition includes the remaining battery power being less than a power threshold; The fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

16. The method according to claim 13 or 14, characterized in that, The charging system further includes a fourth switching unit, the battery is connected to the fourth switching unit, the fourth switching unit is connected to the component unit, and the component unit is connected to the battery; The method further includes: If the third condition and / or the fourth condition are met, a fourth control signal is sent to the fourth switching unit, the fourth control signal being used to control the fourth switching unit to open. The fourth switching unit is used to interrupt the battery's power supply to the component unit; The third condition includes the remaining battery power being less than a power threshold; The fourth condition includes the component unit being in a fault state, and / or the component unit having no power supply requirement.

17. A control device, characterized in that, The control device includes: The transceiver module is used to send a second control signal to the second switching unit when the second condition is met, and the second control signal is used to control the second switching unit to open. The second switching unit is used to interrupt the power receiving unit from supplying power to the component unit; The second condition includes the maximum value of the voltage output by the power receiving unit being greater than the maximum value of the voltage that the component unit can withstand; The power receiving unit is connected to the second switching unit, the second switching unit is connected to the component unit, and the component unit is connected to the power receiving unit. The power receiving unit is used to receive charging current from the charging module.

18. A computing device, characterized in that, The computing device includes a processor and a memory, the memory storing a program, and the processor executing the program to cause the computing device to perform the method as described in any one of claims 13-16.

19. A terminal, characterized in that, The terminal includes a charging system as described in any one of claims 1-12, a control device as described in claim 17, or a computing device as described in claim 18.

20. The terminal according to claim 19, characterized in that, The terminal can be a vehicle, drone, or robot.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, the computer program including instructions for performing the method as described in any one of claims 13-16.

22. A computer program product, characterized in that, The computer program product includes instructions that, when executed by a processor, cause the method as described in any one of claims 13-16 to be implemented.

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