Integrated storage and charging device, charging control method, charging pile and charging system

Abstract

An integrated storage and charging device (10), a charging control method, a charging pile (40) and a charging system (50). The integrated storage and charging device (10) comprises an energy storage module (101) and a charging module (103), wherein a first input terminal (P5) of the charging module (103) is connected to a first output terminal (P2) of an alternating-current-direct-current conversion module (102); a first terminal (P3) of the energy storage module (101) is connected to a second output terminal (P1) of the alternating-current-direct-current conversion module (102); a second terminal (P4) of the energy storage module (101) is connected to a second input terminal (P6) of the charging module (103); an input terminal of the alternating-current-direct-current conversion module (102) is connected to an alternating-current power grid (201); and the charging module (103) is configured to perform charging output in series on the basis of a first charging power provided by an operating state of the alternating-current-direct-current conversion module (102) and a second charging power provided by the energy storage module (101), and provide a third charging power output by the charging module (103) to a device to be charged (202) for charging.

Description

Integrated energy storage and charging device, charging control method, charging pile and charging system

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202411642143.2, filed on November 18, 2024, entitled “Integrated Storage and Charging Device, Charging Control Method, Charging Pile and Charging System”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of charging technology, and in particular to an integrated energy storage and charging device, a charging control method, a charging pile, and a charging system. Background Technology

[0004] With the increasing number of new energy vehicles, the requirements for charging infrastructure are becoming increasingly stringent. Integrated energy storage and charging devices combine energy storage and charging functions, enabling the regulation of electrical load and increasing long-term benefits. Currently, integrated energy storage and charging devices are widely used in charging stations for new energy vehicles.

[0005] However, with the increasing popularity of fast-charging / supercharging electric vehicles, the current application of fast-charging / supercharging stations is relatively limited. Moreover, the fast-charging / supercharging stations in related technologies all require additional transformers or transformer capacity expansion, which not only increases costs but also hinders the rapid charging of electric vehicles. Summary of the Invention

[0006] This disclosure mainly provides an integrated energy storage and charging device, a charging control method, a charging pile, and a charging system. Without the need for additional transformer configuration, the integrated energy storage and charging device can achieve high power output based on the low power provided by the AC power grid, thereby reducing the cost of the integrated energy storage and charging device and improving its charging speed.

[0007] The technical solution disclosed herein is implemented as follows:

[0008] In a first aspect, embodiments of this disclosure provide an integrated energy storage and charging device, which includes an energy storage module and a charging module, wherein:

[0009] The first input terminal of the charging module is connected to the first output terminal of the AC / DC conversion module, the first terminal of the energy storage module is connected to the second output terminal of the AC / DC conversion module, the second terminal of the energy storage module is connected to the second input terminal of the charging module, and the input terminal of the AC / DC conversion module is connected to the AC power grid; the operating states of the AC / DC conversion module include positive polarity operating state and reverse polarity operating state, and the AC / DC conversion module is configured to provide a first charging power based on the operating state;

[0010] The charging module is configured to output charging power based on a first charging power and a second charging power provided by the energy storage module in series, and to provide a third charging power output by the charging module to the device to be charged; wherein the third charging power is greater than the first charging power.

[0011] Through the aforementioned technical means, the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module are connected in series to the charging module for charging output, enabling the charging module to provide a third charging power to the device to be charged. Thus, since the energy storage module can output a higher second charging power, the integrated charging and energy storage device can output a third charging power sufficient for supercharging / fast charging based on the lower power provided by the AC grid. Therefore, no additional transformer is required in the circuit, reducing the cost and size of the integrated charging and energy storage device. Furthermore, it is not limited by the transformer connection point and can be connected to the integrated charging and energy storage device at any location on the AC grid, improving its flexibility and facilitating fast charging of electric vehicles. In addition, the AC / DC conversion module has different operating states, enabling it to provide first charging power in different directions based on the operating state, thereby expanding the range of the third charging power output by the charging module and improving charging flexibility.

[0012] In some embodiments, the positive terminal of the energy storage module is connected to the negative terminal of the AC / DC converter module, the negative terminal of the energy storage module is connected to the negative terminal of the charging module, and the positive terminal of the charging module is connected to the positive terminal of the AC / DC converter module; or, the negative terminal of the energy storage module is connected to the positive terminal of the AC / DC converter module, the positive terminal of the energy storage module is connected to the positive terminal of the charging module, and the negative terminal of the charging module is connected to the negative terminal of the AC / DC converter module.

[0013] Using the aforementioned technical methods, the energy storage module can be located on either the positive or negative side of the AC / DC conversion module. This improves the flexibility of module placement in the integrated energy storage and charging device.

[0014] In some embodiments, the integrated energy storage and charging device further includes an AC / DC conversion module; wherein the AC / DC conversion module is configured to provide a first charging power to the charging module and the energy storage module.

[0015] Through the aforementioned technical means, the AC / DC conversion module can also be installed inside the integrated energy storage and charging device, making it easier for the integrated energy storage and charging device to be directly connected to the AC power grid for charging, thus improving the convenience of charging.

[0016] In some embodiments, the integrated energy storage and charging device further includes a first switch module; the first switch module includes a first switch and a second switch, the first switch being connected in series between the first output terminal of the AC / DC conversion module and the first input terminal of the charging module, and the second switch being connected in series between the second terminal of the energy storage module and the second input terminal of the charging module.

[0017] By employing the aforementioned technical means, and controlling the on / off states of the first and second switches, the energy storage module and the AC / DC conversion module can be controlled to charge the charging module. This allows for the control of the charging circuit's on / off state as needed, thereby reducing the power consumption of the integrated energy storage and charging device.

[0018] In some embodiments, the first switch module further includes a third switch, a fourth switch, and a fifth switch; one end of the third switch is connected to the second output terminal of the AC / DC conversion module and one end of the fifth switch, respectively; the other end of the third switch is connected to the first terminal of the energy storage module; one end of the fourth switch is connected to the second terminal of the energy storage module; the other end of the fourth switch is connected to the other end of the fifth switch and one end of the second switch, respectively; and the other end of the second switch is connected to the second input terminal of the charging module.

[0019] By employing the aforementioned technical means, and controlling the on / off state of multiple switches in the first switching module, the AC / DC conversion module can individually charge the device to be charged, or the AC / DC conversion module and the energy storage module can be connected in series to jointly charge the device to be charged. Alternatively, it can also control the device to feed back electrical energy to the AC grid, thereby realizing vehicle-to-grid (V2G) functionality. In this way, the charging or discharging mode of the device to be charged can be switched according to different application scenarios, improving energy utilization efficiency and the intelligence level of the integrated charging and storage device.

[0020] In some embodiments, the integrated energy storage and charging device further includes a second switch module, which includes a sixth switch; one end of the sixth switch is connected to the first output terminal of the AC / DC conversion module, and the other end of the sixth switch is connected to the first terminal of the energy storage module and one end of the third switch, respectively.

[0021] By employing the aforementioned technical means, and based on the on / off state of each switch in the first and second switch modules, the integrated energy storage and charging device can be controlled to achieve different charging or discharging functions. In this way, the charging and discharging states of the energy storage module can be controlled according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0022] In some embodiments, the integrated energy storage and charging device further includes a second switch module; the second switch module includes a seventh switch and an eighth switch, the seventh switch being connected in series between the first output terminal of the AC / DC conversion module and the first terminal of the energy storage module, and the eighth switch being connected in series between the second output terminal of the AC / DC conversion module and the second terminal of the energy storage module.

[0023] By employing the aforementioned technical means, the charging or discharging of the energy storage module is controlled by turning the seventh and eighth switches on and off. This allows for the control of the energy storage module's charging and discharging state according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0024] In some embodiments, the energy storage module includes at least one energy storage unit, wherein: at least one energy storage unit is connected in series and / or in parallel between a first end of the energy storage module and a second end of the energy storage module to provide a second charging power.

[0025] Through the above-mentioned technical means, the energy storage module includes multiple energy storage units connected in series and / or in parallel. Thus, due to the modularity of the energy storage units, energy storage units can be added or removed freely, which facilitates the rapid connection and removal of energy storage units and improves the charging flexibility of the integrated energy storage and charging device.

[0026] In some embodiments, each energy storage unit includes an energy storage battery, and each energy storage unit is configured to provide a fourth charging power based on the electrical energy of the energy storage battery; wherein the fourth charging power is less than or equal to the second charging power.

[0027] Through the above-mentioned technical means, each energy storage unit includes at least one energy storage battery, thereby enabling control of the output power of the integrated energy storage and charging device to meet different charging needs.

[0028] In some embodiments, at least a portion of the energy storage units in at least one energy storage unit includes a third switching module connected in series between a first terminal of the respective energy storage unit and a second output terminal of the AC / DC conversion module.

[0029] By employing the aforementioned technical means, and controlling the switching state of the third switching module, the number of energy storage units connected in series with the AC / DC conversion module can be controlled. This allows for flexible selection of the number of connected energy storage units based on the charging power requirements of the device being charged, thus improving charging flexibility.

[0030] In some embodiments, the integrated storage and charging device further includes a control module; wherein: the control module is connected to the first switch module, the second switch module and the third switch module, and is configured to send drive signals to the first switch module, the second switch module and the third switch module; wherein, the drive signals are used to control the on and off states of the first switch module, the second switch module and the third switch module.

[0031] Through the aforementioned technical means, the control module controls the on / off state of each switch, enabling the integrated energy storage and charging device to perform different functions. This improves the convenience and safety of controlling the integrated energy storage and charging device.

[0032] In some embodiments, the integrated storage and charging device further includes a communication module; the communication module is connected to the control module; wherein: the control module is configured to acquire the status parameters of the integrated storage and charging device and send the status parameters of the integrated storage and charging device to the communication module; the communication module is configured to receive the status parameters of the integrated storage and charging device and forward them to the cloud platform.

[0033] Through the aforementioned technical means, the communication module feeds back the status parameters collected by the control module to the cloud platform. This allows for timely storage and charging of the integrated storage and charging device's operational data, and also enables monitoring of the device's operational status, thus improving its operational reliability.

[0034] In some embodiments, the AC / DC conversion module is a bidirectional AC / DC module.

[0035] Through the aforementioned technical means, the AC / DC conversion module becomes a bidirectional AC / DC module. This enables bidirectional energy exchange between the integrated energy storage and charging device and the AC power grid. The integrated energy storage and charging device can not only charge the devices to be charged but also feed energy back to the grid, helping to smooth peak and valley loads, and improving grid stability and energy utilization.

[0036] In some embodiments, the ratio between the rated energy and rated power of the energy storage module is less than or equal to a first preset value; the ratio between the input power and output power of the integrated energy storage and charging device is less than or equal to a second preset value; wherein the first preset value is greater than the second preset value.

[0037] By using the above-mentioned technical means, and by limiting the ratio between the rated energy and rated power of the energy storage module, as well as the ratio between the input power and output power of the integrated energy storage and charging device, it is possible to achieve high cost-effectiveness and good performance under the condition of low power input and high power output.

[0038] In some embodiments, the first charging power is less than or equal to 150 kW, and the third charging power is greater than or equal to 360 kW.

[0039] By using the above-mentioned technical means, the first charging power and the third charging power are limited, enabling the integrated energy storage and charging device to achieve the function of low power input and high power output without the need for an additional transformer, thereby realizing the supercharging of the device to be charged by the integrated energy storage and charging device.

[0040] Secondly, embodiments of this disclosure provide a charging control method applied to an integrated energy storage and charging device, the integrated energy storage and charging device including an energy storage module and a charging module, the method including:

[0041] The AC-DC converter converts the power supplied by the AC grid into AC-DC power. Based on the working state of the AC-DC converter, the first charging power is output, and the second charging power is output through the energy storage module. The working state of the AC-DC converter includes positive polarity working state and reverse polarity working state.

[0042] The first charging power and the second charging power are connected in series and provided to the charging module for charging output, and the third charging power output by the charging module is provided to the device to be charged for charging; wherein, the third charging power is greater than the first charging power.

[0043] Through the aforementioned technical means, the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module jointly charge the charging module, enabling the charging module to provide a third charging power to the device to be charged. Thus, because the energy storage module can output a higher second charging power, the integrated energy storage and charging device, based on the lower power provided by the AC grid, can enable the charging module to output a third charging power sufficient for supercharging / fast charging. Therefore, no additional transformer is required in the circuit, reducing the cost and size of the integrated energy storage and charging device. Furthermore, it is not limited by the transformer connection point and can be connected to the integrated energy storage and charging device at any location on the AC grid, improving its flexibility and facilitating fast charging of electric vehicles.

[0044] In some embodiments, the integrated energy storage and charging device further includes a first switch module, which includes a first switch and a second switch; the method further includes: when both the first switch and the second switch are in the on state, enabling the charging module to charge the device to be charged based on the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module.

[0045] By employing the aforementioned technical means, and controlling the on / off states of the first and second switches, the energy storage module and the AC / DC conversion module can be controlled to charge the charging module. This allows for the control of the charging circuit's on / off state as needed, thereby reducing the power consumption of the integrated energy storage and charging device.

[0046] In some embodiments, the integrated energy storage and charging device further includes a first switch module, which includes a first switch, a second switch, a third switch, a fourth switch, and a fifth switch. The method further includes: when the first switch, the second switch, the third switch, and the fourth switch are all in the on state and the fifth switch is in the off state, enabling the charging module to charge the device to be charged based on the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module; or, it is further configured to enable the charging module to charge the device to be charged based on the first charging power provided by the AC / DC conversion module, or to feed back electrical energy to the AC grid based on the output power of the device to be charged, when the first switch, the second switch, and the fifth switch are all in the on state and the third switch and the fourth switch are in the off state.

[0047] By employing the aforementioned technical means, and controlling the on / off state of multiple switches in the first switching module, the AC / DC conversion module can individually charge the device to be charged, or the AC / DC conversion module and the energy storage module can be connected in series to jointly charge the device to be charged. Alternatively, it can also control the device to feed back electrical energy to the AC grid, thereby realizing vehicle-to-grid (V2G) functionality. In this way, the charging or discharging mode of the device to be charged can be switched according to different application scenarios, improving energy utilization efficiency and the intelligence level of the integrated charging and storage device.

[0048] In some embodiments, the integrated energy storage and charging device further includes a second switching module, which includes a sixth switch; the method further includes: charging the energy storage module based on the first charging power provided by the AC-DC conversion module when the fourth switch, the fifth switch and the sixth switch are all in the on state, or feeding back electrical energy to the AC grid based on the output power of the energy storage module.

[0049] By employing the aforementioned technical means, the integrated energy storage and charging device can achieve different charging or discharging functions by controlling the on / off states of each switch in the second switching module. This allows for the control of the charging and discharging states of the energy storage module according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0050] In some embodiments, the integrated energy storage and charging device further includes a second switching module, which includes a seventh switch and an eighth switch; the method further includes: charging the energy storage module based on the first charging power provided by the AC-DC conversion module when both the seventh switch and the eighth switch are in the on state; or feeding back electrical energy to the AC grid based on the output power of the energy storage module.

[0051] By employing the aforementioned technical means, the charging or discharging of the energy storage module is controlled by turning the seventh and eighth switches on and off. This allows for the control of the energy storage module's charging and discharging state according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0052] In some embodiments, the energy storage module includes at least one energy storage unit, and at least a portion of the energy storage units in the at least one energy storage unit includes a third switch module; the method further includes: when the third switch module is in a conducting state, the third switch module connects at least one energy storage unit in the charging circuit where the third switch is located in series to provide a second charging power.

[0053] By employing the aforementioned technical means, and controlling the switching state of the third switching module, the number of energy storage units connected in series with the AC / DC conversion module can be controlled. This allows for flexible selection of the number of connected energy storage units based on the charging power requirements of the device being charged, thus improving charging flexibility.

[0054] Thirdly, embodiments of this disclosure provide a charging pile, which includes an integrated energy storage and charging device as described in any of the first aspects.

[0055] Through the aforementioned technical means, the integrated energy storage and charging device in the charging pile can output a higher third charging power to meet the needs of supercharging / fast charging, based on the relatively low power provided by the AC power grid. Therefore, no additional transformer is required in the circuit, reducing the cost and size of the integrated energy storage and charging device. Moreover, it is not limited by the transformer connection point and can be connected to the integrated energy storage and charging device at any location on the AC power grid, improving the flexibility of the charging pile and facilitating the rapid charging of the devices to be charged.

[0056] Fourthly, embodiments of this disclosure provide a charging system, which includes a device to be charged and a charging pile as described in the third aspect.

[0057] Through the above-mentioned technical means, without the need for additional transformer configuration, the charging piles in the charging system can achieve high power output to the device to be charged based on the low power input of the AC power grid, which not only reduces the cost and size of the charging system, but also improves the charging speed.

[0058] In some embodiments, the charging module includes a charging gun, the output end of which is connected to the device to be charged; wherein: the integrated energy storage and charging device is used to charge the device to be charged through the charging gun according to the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module; wherein the third charging power is greater than the first charging power.

[0059] By employing the aforementioned technical methods, the charging gun is used to charge the device, thereby improving the stability of the charging process.

[0060] In some embodiments, the charging system further includes a cloud platform connected to the integrated charging and storage device; wherein the cloud platform is configured to receive status parameters of the integrated charging and storage device.

[0061] By using the above-mentioned technical means, the status parameters of the integrated storage and charging device can be received through the cloud platform, which facilitates real-time monitoring of the status of the integrated storage and charging device and enables timely handling of abnormalities when they occur.

[0062] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of this disclosure. Attached Figure Description

[0063] Figure 1 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0064] Figure 2 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0065] Figure 3 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0066] Figure 4 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0067] Figure 5 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0068] Figure 6 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0069] Figure 7 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0070] Figure 8 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure.

[0071] Figure 9 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0072] Figure 10 is a schematic diagram of the composition structure of an integrated storage and charging device provided in an embodiment of this disclosure;

[0073] Figure 11 is a schematic diagram of the composition structure of an energy storage unit provided in an embodiment of this disclosure;

[0074] Figure 12 is a schematic flowchart of a charging control method provided in an embodiment of this disclosure;

[0075] Figure 13 is a schematic diagram of the composition structure of a charging pile provided in an embodiment of this disclosure;

[0076] Figure 14 is a schematic diagram of the composition structure of a charging system provided in an embodiment of this disclosure;

[0077] Figure 15 is a schematic diagram of the composition structure of a charging system provided in an embodiment of this disclosure;

[0078] Figure 16 is a schematic diagram of the composition structure of a charging system provided in an embodiment of this disclosure. Detailed Implementation

[0079] To gain a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of this disclosure.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to be limiting of this disclosure.

[0081] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0082] It should also be noted that the terms "first, second, third" used in the embodiments of this disclosure are only used to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0083] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0084] The following is a description of the relevant technologies disclosed herein.

[0085] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0086] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0087] In this embodiment, the battery can be a single battery cell. A single battery cell refers to a basic unit capable of converting chemical energy into electrical energy, and can be used to manufacture battery modules or battery packs to supply power to electrical devices. A single battery cell can be a rechargeable battery, which is a battery cell that can be recharged after discharge to reactivate its active materials and continue to be used. The single battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment is not limited to these types.

[0088] In embodiments of this disclosure, the battery may also be a single physical module comprising one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0089] To regulate electricity load and increase long-term benefits, integrated energy storage and charging devices are being used more and more frequently in charging stations, parking lots, and other locations. "Storage" refers to intelligent battery modules that store electricity, while "charging" refers to charging new energy vehicles. Therefore, integrated energy storage and charging devices can supply power to the grid or vehicles from the battery modules during peak electricity demand periods, and charge the battery modules and vehicles from the grid during off-peak periods, thus playing a role in peak shaving and valley filling.

[0090] Currently, new energy vehicles have various charging modes, including slow charging, fast charging, and supercharging. Slow charging typically has a charging power of 3 to 7 kW and takes 8 to 10 hours to fully charge the battery in a new energy vehicle. Fast charging and supercharging, on the other hand, generally have higher charging power, reaching tens to hundreds of kW, and can provide a large amount of electrical energy to new energy vehicles in a shorter time.

[0091] While supercharging / fast charging can shorten the charging time of new energy vehicles, supercharging places high demands on battery design, charging design, power grid, and infrastructure. For example, fast charging / supercharging stations require additional transformers or transformer capacity expansion, which not only increases costs but also makes them bulky. Moreover, these transformers need to be applied for in advance, so the charging access points are relatively fixed, which is not conducive to the fast charging of electric vehicles.

[0092] Based on this, embodiments of this disclosure provide an integrated energy storage and charging device, a charging control method, a charging pile, and a charging system. A first charging power provided by an AC / DC conversion module and a second charging power provided by an energy storage module jointly charge the charging module, enabling the charging module to provide a third charging power to the device to be charged. Thus, since the energy storage module can output a higher second charging power, the integrated energy storage and charging device, based on the low power provided by the AC grid, can enable the charging module to output a larger third charging power that meets the needs of supercharging / fast charging. Therefore, no additional transformer is required in the circuit, reducing the cost and size of the integrated energy storage and charging device. Furthermore, it is not limited by the transformer connection point and can be connected to the integrated energy storage and charging device at any location on the AC grid, improving its flexibility and facilitating fast charging of electric vehicles.

[0093] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0094] In one embodiment of this disclosure, FIG1 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this embodiment. As shown in FIG1, the integrated energy storage and charging device 10 includes an energy storage module 101 and a charging module 103, wherein:

[0095] The first input terminal P5 of the charging module 103 is connected to the first output terminal P2 of the AC / DC conversion module 102. The first terminal P3 of the energy storage module 101 is connected to the second output terminal P1 of the AC / DC conversion module 102. The second terminal P4 of the energy storage module 101 is connected to the second input terminal P6 of the charging module 103. The input terminal of the AC / DC conversion module 102 is connected to the AC power grid 201. The AC / DC conversion module 102 has two operating states: a positive polarity operating state and a reverse polarity operating state. The AC / DC conversion module 102 is configured to provide a first charging power based on the operating state.

[0096] The charging module 103 is configured to output charging power based on a first charging power and a second charging power provided by the energy storage module 101 in series, and to provide a third charging power output by the charging module 103 to the device to be charged 202 for charging; wherein the third charging power is greater than the first charging power.

[0097] It should be noted that, in this embodiment of the disclosure, the first output terminal P1 of the AC-DC conversion module 102, the second output terminal P2 of the AC-DC conversion module 102, the first terminal P3 of the energy storage module 101, the second terminal P4 of the energy storage module 101, the first input terminal P5 of the charging module 103, and the second input terminal P6 of the charging module 103 can be determined as positive or negative terminals respectively according to the specific structure, so as to realize that the energy storage module 101 and the AC power grid 201 jointly supply power to the device to be charged 202.

[0098] In this embodiment, the energy storage module 101 can be a battery capable of storing electrical energy in the integrated energy storage and charging device 10, such as a lithium iron phosphate battery or a lithium-ion battery. The energy storage module 101 can store electrical energy from the AC power grid 201 or renewable energy sources, such as the electrical energy output or converted by photovoltaic power generation equipment. The battery capacity and type of the energy storage module 101 are not limited here, but generally, the output power U2 of the energy storage module 101, i.e., the second charging power, is generally greater than 210kW.

[0099] It should be noted that the AC power grid 201 can be a three-phase AC power grid, and its input power is generally less than or equal to 150kW. In this embodiment of the present disclosure, the AC power grid 201 is connected to the AC-DC conversion module 102 and can output AC voltage and AC current to the AC-DC conversion module 102. Those skilled in the art will understand that the AC power grid 201 generally refers to a system capable of providing electricity; as an example, the AC power grid 201 can be a municipal power source.

[0100] In this embodiment, the AC / DC conversion module 102 can be disposed outside the integrated energy storage and charging device 10. It is an isolated bidirectional AC / DC converter, or rectifier, which is a power conversion device capable of converting AC power to DC power or vice versa. The AC / DC conversion module 102 may also include an isolation chip to isolate the AC power grid 201 from the subsequent charging module 103, the device to be charged 202, etc., to prevent damage to the integrated energy storage and charging device 10 and the device to be charged 202 caused by the AC power grid 201. It should be understood that after the input power of the AC power grid 201 is converted by the AC / DC conversion module 102, its output power, i.e., the first charging power, should be less than or equal to 150kW.

[0101] Furthermore, in this embodiment, the AC / DC conversion module 102 has different operating states. For example, it may include a positive polarity operating state and a reverse polarity operating state. In the positive polarity operating state, the AC / DC conversion module 102 outputs a first charging power towards the charging module 103, which is called "forward flow". Therefore, the output first charging power is positive polarity. The sum of the first charging power and the second charging power output by the energy storage module 101 is used to charge the charging module 103, and the resulting third charging power is the sum of the first charging power and the second charging power. In the reverse polarity operating state, the AC / DC conversion module 102 outputs a first charging power towards the energy storage module 101, which is called "reverse flow". Therefore, the output first charging power is reverse polarity (or "negative polarity"). In this case, the first charging power partially cancels out the third charging power output by the energy storage module 101 before being used to charge the charging module 103, and the resulting third charging power is the difference between the second charging power and the first charging power.

[0102] It should also be noted that the power requirement for fast charging / supercharging is generally greater than or equal to 360kW. The output power U3 of the charging module 103, i.e. the third charging power, must be greater than or equal to 360kW, which is jointly provided by the first charging power output by the AC-DC conversion module 102 and the second charging power output by the energy storage module 101.

[0103] The positive output terminal of the AC / DC conversion module 102 is connected to the positive input terminal of the charging module 103, and the negative output terminal of the AC / DC conversion module 102 is connected to the positive terminal of the energy storage module 101. The negative terminal of the energy storage module 101 is connected to the negative input terminal of the charging module 103. This allows the energy storage module 101 to be connected in series in the charging circuit. In other words, the AC / DC conversion module 102 and the energy storage module 101 are connected in series, and the energy storage module 101 and the AC power grid 201 jointly provide charging power to the charging module 103. Specifically, the sum of the first and second charging powers is provided to the charging module 103, and finally, the charging module 103 outputs a third charging power to the device 202 to be charged. Since the first charging power can output either positive or negative charging power depending on the operating state, the third charging power output by the charging module 103 will vary.

[0104] It should also be noted that when the AC / DC conversion module 102 is in a positive polarity operating state, since the energy storage module 101 outputs a second charging power to the charging module 103, the third charging power is greater than the first charging power provided by the AC / DC conversion module 102. Furthermore, this embodiment does not require a specific input power from the AC grid 201, and no additional transformer is needed to boost the input power of the AC grid 201. It should be understood that the second charging power output by the energy storage module 101 can be adjusted based on the difference between the input power provided by the AC grid 201 (i.e., the first charging power provided by the AC / DC conversion module 102) and the supercharging power requirement, so that the charging module 103 charges the device 202 in a fast / supercharging mode. Alternatively, when the third charging power is greater than the second charging power, the AC / DC conversion module 102 can be in a reverse polarity operating state, and the second charging power can be adjusted according to the negative charging power output by the AC / DC conversion module, reducing the charging power output to the device 202.

[0105] This disclosure provides an integrated energy storage and charging device. A first charging power provided by an AC / DC conversion module and a second charging power provided by an energy storage module are connected in series to a charging module for charging output. This allows the charging module to provide a third charging power to the device being charged. Since the energy storage module can output a higher second charging power, the integrated energy storage and charging device can output a third charging power sufficient for supercharging / fast charging based on the lower power provided by the AC grid. Therefore, no additional transformer is needed in the circuit, reducing the cost and size of the integrated energy storage and charging device. Furthermore, it is not limited by the transformer connection point and can be connected to the integrated energy storage and charging device at any location on the AC grid, improving its flexibility and facilitating fast charging of electric vehicles. In addition, the AC / DC conversion module has different operating states, enabling it to provide first charging power in different directions based on the operating state, thereby expanding the range of the third charging power output by the charging module and improving charging flexibility.

[0106] In another embodiment of this disclosure, Figure 2 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this embodiment. As shown in Figure 2, the positive terminal of the energy storage module 101 is connected to the negative terminal of the AC / DC conversion module 102, the negative terminal of the energy storage module 101 is connected to the negative terminal of the charging module 103, and the positive terminal of the charging module 103 is connected to the positive terminal of the AC / DC conversion module 102.

[0107] In other words, the first output terminal P1 of the AC / DC conversion module 102 can be a positive output terminal, the second output terminal P2 of the AC / DC conversion module 102 can be a negative output terminal, the first terminal P3 of the energy storage module 101 can be a positive terminal, the second terminal P4 of the energy storage module 101 can be a negative terminal, the first input terminal P5 of the charging module 103 can be a positive input terminal, and the second input terminal P6 of the charging module 103 can be a negative input terminal.

[0108] Alternatively, in some embodiments, Figure 3 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in Figure 3, the negative terminal of the energy storage module 101 is connected to the positive terminal of the AC / DC conversion module 102, the positive terminal of the energy storage module 101 is connected to the positive terminal of the charging module 103, and the negative terminal of the charging module 103 is connected to the negative terminal of the AC / DC conversion module 102.

[0109] The first output terminal P1 of the AC / DC conversion module 102 can be a negative output terminal, the second output terminal P2 of the AC / DC conversion module 102 can be a positive output terminal, the first terminal P3 of the energy storage module 101 can be a negative terminal, the second terminal P4 of the energy storage module 101 can be a positive terminal, the first input terminal P5 of the charging module 103 can be a negative input terminal, and the second input terminal P6 of the charging module 103 can be a positive input terminal.

[0110] It should be understood that whether each terminal in each module is a positive or negative terminal depends on the specific device. However, in Figures 2 and 3, the energy storage module 101 is connected in series with the AC / DC conversion module 102, and the sum of their output power is provided as the third charging power to the charging module 103. Furthermore, this disclosure and the following embodiments are based on the embodiment shown in Figure 2.

[0111] This disclosure provides an integrated energy storage and charging device. The energy storage module can be located on either the positive or negative side of the AC / DC conversion module. This improves the flexibility of module placement in the integrated energy storage and charging device.

[0112] In some embodiments, FIG4 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in FIG4, the integrated energy storage and charging device further includes an AC / DC conversion module; wherein: the AC / DC conversion module is configured to provide a first charging power to the charging module and the energy storage module.

[0113] In this embodiment of the disclosure, the AC / DC conversion module 102 can also be disposed inside the integrated energy storage and charging device 10. Although this solution increases the volume of the integrated energy storage and charging device 10 to a certain extent, it reduces the requirements for the charging interface between the device and the AC power grid 201, thus making charging more convenient.

[0114] This disclosure provides an integrated energy storage and charging device. The AC / DC conversion module can also be installed inside the integrated energy storage and charging device, which facilitates the direct connection of the integrated energy storage and charging device to the AC power grid for charging, thus improving the convenience of charging.

[0115] In another embodiment of this disclosure, FIG5 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this embodiment. As shown in FIG5, the integrated energy storage and charging device 10 further includes a first switch module 104; the first switch module 104 includes a first switch K1 and a second switch K2, the first switch K1 is connected in series between the first output terminal of the AC-DC conversion module 102 and the first input terminal of the charging module 103, and the second switch K2 is connected in series between the second terminal of the energy storage module 101 and the second input terminal of the charging module 103.

[0116] In this embodiment of the disclosure, the first switch module 104 is configured to enable the charging module 103 to charge the device 202 to be charged based on the first charging power provided by the AC / DC conversion module 102 and the second charging power provided by the energy storage module 101 when both the first switch K1 and the second switch K2 are in the on state.

[0117] It should be noted that Figure 5 is illustrated based on the embodiment shown in Figure 2. It should be understood that the first switch module 104 can also be configured based on the embodiment shown in Figure 3. In this case, the first switch K1 is connected in series between the negative terminal of the AC / DC conversion module 102 and the negative input terminal of the charging module 103, and the second switch K2 is connected in series between the positive terminal of the energy storage module 101 and the positive input terminal of the charging module 103. Its control logic corresponds to the first switch module 104 shown in Figure 5, and will not be shown here.

[0118] In this embodiment, the first switch K1 and the second switch K2 included in the first switch module 104, as well as the switches included in the following embodiments, can all be electronic components that control the open or open circuit connection of the circuit in the integrated energy storage and charging device 10 based on the conduction or cutoff of the drive signal. For example, they can be knife switches, or semiconductor devices such as switching transistors, triodes, transistors, IGBTs, and metal-oxide-semiconductor field-effect transistors (MOSFETs or MOS transistors), etc., without any limitation herein.

[0119] It should be noted that, as shown in Figure 5, the first switch K1 is connected in series between the positive terminal of the AC / DC conversion module 102 and the positive input terminal of the charging module 103, and is used to control the on / off state of the circuit between the AC / DC conversion module 102 and the charging module 103; the second switch K2 is connected in series between the negative terminal of the energy storage module 101 and the negative input terminal of the charging module 103, and is used to control the on / off state of the circuit between the energy storage module 101 and the charging module 103. It should be understood that, to avoid power supply abnormalities, the first switch K1 and the second switch K2 should be in the same state, and should be simultaneously turned on or off.

[0120] It should also be noted that when both the first switch K1 and the second switch K2 are in the ON state, the circuit consisting of the AC / DC conversion module 102, the energy storage module 101, and the charging module 103 is connected, and the energy storage module 101 and the AC / DC conversion module 102 jointly provide charging power to the charging module 103 to charge the device 202 to be charged; when both the first switch K1 and the second switch K2 are in the OFF state, the AC / DC conversion module 102 and the energy storage module 101 stop providing charging power to the charging module 103 and stop charging the device 202 to be charged.

[0121] This disclosure provides an integrated energy storage and charging device. By controlling the on / off state of a first switch and a second switch, the device controls whether the energy storage module and the AC / DC conversion module charge the charging module. This allows for control of the charging circuit's on / off state as needed, thereby reducing the power consumption of the integrated energy storage and charging device.

[0122] In some embodiments, FIG6 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in FIG6, the first switch module 104 further includes a third switch K3, a fourth switch K4 and a fifth switch K5; one end of the third switch K3 is connected to the second output terminal of the AC-DC conversion module 102 and one end of the fifth switch K5, respectively; the other end of the third switch K3 is connected to the first terminal of the energy storage module 101; one end of the fourth switch K4 is connected to the second terminal of the energy storage module 101; the other end of the fourth switch K4 is connected to the other end of the fifth switch K5 and one end of the second switch K2, respectively; and the other end of the second switch K2 is connected to the second input terminal of the charging module 103.

[0123] In this embodiment of the present disclosure, the first switch module 104 is configured to enable the charging module 103 to charge the device 202 to be charged based on the first charging power provided by the AC / DC conversion module 102 and the second charging power provided by the energy storage module 101 when the first switch K1, the second switch K2, the third switch K3 and the fourth switch K4 are all in the on state and the fifth switch K5 is in the off state; or, it is further configured to enable the charging module 103 to charge the device 202 to be charged based on the first charging power provided by the AC / DC conversion module 102, or to feed back electrical energy to the AC grid 201 based on the output power of the device 202 to be charged, when the first switch K1, the second switch K2 and the fifth switch K5 are all in the on state and the third switch K3 and the fourth switch K4 are in the off state.

[0124] It should be noted that the first switch module 104 shown in Figure 6 is based on the integrated storage and charging device 10 shown in Figure 2. It should be understood that the first switch module 104 in this embodiment can also be based on the integrated storage and charging device 10 shown in Figure 3. The positive or negative terminals of each end are shown in Figure 3, and the connection method is shown in this embodiment.

[0125] It should be noted that, in some embodiments, the first switch module 104 may include a first switch K1, a second switch K2, a third switch K3 and a fourth switch K4, and based on the conduction of the first switch K1 to the fourth switch K4, the energy storage module 101 and the AC-DC conversion module 102 are connected in series to jointly supply power to the charging module 103; and based on the deactivation of the first switch K1 to the fourth switch K4, the power supply to the charging module 103 is stopped.

[0126] It should also be noted that, when the first switch module 104 includes a first switch K1, a second switch K2, a third switch K3, a fourth switch K4, and a fifth switch K5, if the fifth switch K5 is turned off and the remaining switches in the first switch module 104 are closed, the energy storage module 101 and the AC / DC conversion module 102 are connected in series to jointly supply power to the charging module 103; or, if the charging power required by the device to be charged 202 is low, or if the device to be charged 202 does not support or use the overcharge function, the first switch K1, the second switch K2, and the fifth switch K5 are closed, and the third switch K3 and the fourth switch K4 are closed. When K4 is turned off, only the AC / DC conversion module 102 converts the AC power provided by the AC grid 201 to output the first charging power, which is then supplied to the device 202 to be charged through the charging module 103. The energy storage module 101 does not participate in supplying power to the device 202 to be charged. Alternatively, the first switch K1, the second switch K2, and the fifth switch K5 can be closed, while the third switch K3 and the fourth switch K4 can be turned off. Based on the vehicle-to-grid (V2G) technology, the device 202 to be charged can supply energy to the AC grid 201, thereby enhancing the stability of the AC grid 201.

[0127] In this embodiment of the present disclosure, the switching on or off of each switch in the first switch module 104 should be completed synchronously or within a preset time range to avoid abnormal charging.

[0128] In this embodiment of the disclosure, the on or off state of each switch in the first switch module 104, as well as the direction of electrical energy flow in the circuit, can be controlled based on actual needs, thereby achieving the regulation and optimization of electrical energy.

[0129] This disclosure provides an integrated energy storage and charging device. By controlling the on / off state of multiple switches in a first switching module, the AC / DC conversion module can charge the device to be charged independently, or the AC / DC conversion module and the energy storage module can be connected in series to charge the device to be charged together. Alternatively, the device to be charged can be controlled to feed energy back to the AC grid. In this way, the charging or discharging mode of the device to be charged can be switched according to different application scenarios, improving energy utilization efficiency and the intelligence level of the integrated energy storage and charging device.

[0130] In some embodiments, FIG7 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in FIG7, the integrated energy storage and charging device 10 further includes a second switch module, which includes a sixth switch K6; one end of the sixth switch K6 is connected to the first output terminal of the AC-DC conversion module 102, and the other end of the sixth switch K6 is connected to the first terminal of the energy storage module 101 and one end of the third switch K3, respectively.

[0131] In this embodiment of the disclosure, the second switch module is configured to charge the energy storage module 101 based on the first charging power provided by the AC-DC conversion module 102, or to feed back electrical energy to the AC grid 201 based on the output power of the energy storage module 101, when the fourth switch K4, the fifth switch K5 and the sixth switch K6 are all in the on state.

[0132] It should be noted that the structure in this embodiment is based on the integrated storage and charging device 10 shown in Figures 6 and 2. Alternatively, the second switch module in this embodiment can be set based on the integrated storage and charging device 10 shown in Figure 3, and the connection relationship is the same as in this embodiment.

[0133] As shown in Figure 7, referring to the aforementioned embodiment, when the first switch K1, the second switch K2, and the fifth switch K5 are in the on state, and the third switch K3, the fourth switch K4, and the sixth switch K6 are in the off state, the device to be charged 202 can be charged based on the first charging power provided by the AC / DC conversion module 102, or the power can be fed back to the AC grid 201 based on the output power of the device to be charged 202.

[0134] Alternatively, as shown in Figure 7, referring to the aforementioned embodiment, when the first switch K1, the second switch K2, the third switch K3, and the fourth switch K4 are in the on state, and the fifth switch K5 and the sixth switch K6 are in the off state, the energy storage module 101 and the AC / DC conversion module 102 are connected in series. The second charging power provided by the energy storage module 101 and the first charging power provided by the AC / DC conversion module 102 jointly charge the device 202 to be charged. At this time, the energy storage module 101 is in the discharging state, and the AC / DC conversion module 102 is in the charging state for the whole vehicle.

[0135] Alternatively, as shown in Figure 7, when the fourth switch K4, the fifth switch K5, and the sixth switch K6 are all in the on state and the first switch K1, the second switch K2, and the third switch K3 are all in the off state, the AC power grid 201 charges the energy storage module 101, or the energy storage device feeds back electrical energy to the AC power grid 201.

[0136] This disclosure provides an integrated energy storage and charging device. Based on the on / off state of each switch in a first and second switching module, the integrated energy storage and charging device can be controlled to achieve different charging or discharging functions. In this way, the charging and discharging states of the energy storage module can be controlled according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0137] In some embodiments, FIG8 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in FIG8, the integrated energy storage and charging device 10 further includes a second switch module 105; the second switch module 105 includes a seventh switch K7 and an eighth switch K8, the seventh switch K7 is connected in series between the first output terminal of the AC-DC conversion module 102 and the first terminal of the energy storage module 101, and the eighth switch K8 is connected in series between the second output terminal of the AC-DC conversion module 102 and the second terminal of the energy storage module 101.

[0138] In this embodiment of the disclosure, the second switch module 105 is configured to charge the energy storage module 101 based on the first charging power provided by the AC-DC conversion module 102 when both the seventh switch K7 and the eighth switch K8 are in the on state; or to feed back electrical energy to the AC grid 201 based on the output power of the energy storage module 101.

[0139] It should be noted that the embodiments disclosed herein are based on the integrated storage and charging device 10 shown in FIG2, and include a first switch module 104 and a second switch module 105. Alternatively, in some embodiments, the integrated storage and charging device 10 may include only the second switch module 105. Alternatively, in some embodiments, the integrated storage and charging device 10 shown in FIG3 may include a first switch module 104 and / or a second switch module 105, and the connection relationship of the terminals of each module can be referred to in this embodiment.

[0140] The second switch module 105 may include a seventh switch K7 and an eighth switch K8, which are used to control the circuit connection and disconnection between the energy storage module 101 and the AC / DC conversion module 102.

[0141] It should be noted that when the seventh switch K7 and the eighth switch K8 are on, the AC / DC conversion module 102 can convert the AC power from the AC grid 201 into DC power and output the first charging power to the energy storage module 101; or, when the seventh switch K7 and the eighth switch K8 are on, the energy storage module 101 can also feed back electrical energy to the AC grid 201 through the AC / DC conversion module 102. Alternatively, when both the seventh switch K7 and the eighth switch K8 are off, the circuit between the energy storage module 101 and the AC / DC conversion module 102 is broken.

[0142] In some embodiments, when the integrated energy storage and charging device 10 includes a first switch module 104 and a second switch module 105, the first switch K1, the second switch K2, the fifth switch K5, the seventh switch K7, and the eighth switch K8 can be closed, while the third switch K3 and the fourth switch K4 are turned off. This allows the first charging power provided by the AC / DC conversion module 102 to be simultaneously supplied to the energy storage module 101 and the device to be charged 202 for charging. It should be understood that closing the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, and the fifth switch K5, while turning off the seventh switch K7 and the eighth switch K8, will cause a short circuit.

[0143] In some embodiments, FIG9 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this disclosure. As shown in FIG9, the first switch module 104 may also include only the first switch K1, the second switch K2, the third switch K3, and the fourth switch K4. In this case, when the first switch K1, the second switch K2, the third switch K3, and the fourth switch K4 are all closed, the energy storage module 101 and the AC / DC conversion module 102 jointly charge the device 202 to be charged.

[0144] This disclosure provides an integrated energy storage and charging device that controls the charging or discharging of an energy storage module by controlling the on and off states of a seventh and eighth switch. This allows for the control of the charging and discharging states of the energy storage module according to demand, thereby improving the energy utilization and management efficiency of the integrated energy storage and charging device.

[0145] In another embodiment of this disclosure, FIG10 is a schematic diagram of the composition structure of an integrated energy storage and charging device provided in this embodiment. As shown in FIG10, the energy storage module 101 includes at least one energy storage unit, wherein: at least one energy storage unit is connected in series and / or in parallel between the first end of the energy storage module 101 and the second end of the energy storage module 101 to provide a second charging power.

[0146] In this embodiment, the first terminal of the energy storage module 101 can be a positive terminal, and the second terminal of the energy storage module 101 can be a negative terminal; or, the first terminal of the energy storage module 101 can be a negative terminal, and the second terminal of the energy storage module 101 can be a positive terminal. In this disclosure and the following embodiments, the first terminal of the energy storage module 101 is taken as a positive terminal and the second terminal is a negative terminal for illustration.

[0147] It should be noted that the energy storage module 101 includes one or more energy storage units, namely energy storage unit 1 1014, energy storage unit 2 1013, ..., energy storage unit n-1 1012 and energy storage unit n 1011 (n is a positive integer). Each energy storage unit includes a positive terminal and a negative terminal. Multiple energy storage units are connected in series and / or in parallel to form the energy storage module 101, enabling the energy storage module 101 to provide a second charging power. As an example, the energy storage unit can be an electrical box.

[0148] It should also be noted that the multiple energy storage units in the energy storage module 101 can be connected in parallel, in series, or in a combination of series and parallel connections, without any specific limitation. In this disclosure and the following embodiments, multiple energy storage units connected in series are used as an example. In this way, when there are multiple energy storage units, the power of the energy storage module 101 is the sum of the power of the multiple energy storage units. Thus, the energy storage module 101 can output higher power to charge the device 202, and the high-power charging demand can be met without adding a transformer or expanding the transformer capacity on the AC power grid 201 side.

[0149] In this embodiment, the number of energy storage units can be selected based on actual needs. When the integrated energy storage and charging device 10 is only used for low-power charging, the energy storage unit can be set to one or a few units, which can meet the needs of low-power charging scenarios; when the integrated energy storage and charging device 10 is applied to fast charging / supercharging scenarios, the energy storage unit can be set to multiple units.

[0150] In this embodiment of the disclosure, the number of energy storage units in the energy storage module 101 can be set according to actual needs, and energy storage units can be freely added or removed in series or parallel.

[0151] This disclosure provides an integrated energy storage and charging device. The energy storage module includes multiple energy storage units connected in series and / or in parallel. As such, due to the modularity of the energy storage units, energy storage units can be freely added or removed, which facilitates the rapid connection and removal of energy storage units and improves the charging flexibility of the integrated energy storage and charging device.

[0152] In some embodiments, FIG11 is a schematic diagram of the composition structure of an energy storage unit provided in an embodiment of the present disclosure. As shown in FIG11, each energy storage unit 1015 includes an energy storage battery, and each energy storage unit 1015 is configured to provide a fourth charging power based on the electrical energy of the energy storage battery; wherein the fourth charging power is less than or equal to the second charging power.

[0153] In this embodiment, the energy storage battery can be a single-cell battery, a multi-cell battery, a blade battery, a battery module, etc., and there are no specific limitations here.

[0154] In this embodiment, the number of energy storage batteries in each energy storage unit may be equal or unequal, depending on specific requirements. Each energy storage unit can provide a fourth charging power based on the number of energy storage batteries it contains. It should be understood that the fourth charging power corresponding to different energy storage units may be the same or different.

[0155] It should be noted that each energy storage unit provides a fourth charging power based on the electrical energy of the energy storage battery. Furthermore, multiple energy storage units provide a second charging power to the device to be charged 202 by being connected in series and / or in parallel. By setting the number of energy storage units and the number of energy storage batteries in each energy storage unit, the different charging needs of the device to be charged 202 can be met.

[0156] This disclosure provides an integrated energy storage and charging device, in which each energy storage unit includes at least one energy storage battery. This allows for control of the output power of the integrated energy storage and charging device to meet different charging needs.

[0157] In some embodiments, continuing to refer to FIG10, at least a portion of the energy storage units in at least one energy storage unit includes a third switching module connected in series between the first terminal of the respective energy storage unit and the second output terminal of the AC / DC conversion module 102.

[0158] In this embodiment of the disclosure, the third switch module is configured to connect at least one energy storage unit in the charging circuit where the third switch K3 is located in series when the third switch module is in the on state, so as to provide a second charging power.

[0159] In this embodiment of the disclosure, the third switch module includes multiple switches. That is, a switch can be set on the path connecting each energy storage module 101 and the AC / DC conversion module 102 to control the number of energy storage units connected to the charging circuit, thereby controlling the power output to the device to be charged 202.

[0160] When there is only one energy storage unit, if the energy storage unit includes a switch, then when the switch and the third switch K3 are turned on, the energy storage unit can be connected in series with the AC / DC conversion module 102 to jointly provide the second charging power to the charging module 103.

[0161] When there are multiple energy storage units, for example, including energy storage unit 1 1014, energy storage unit 2 1013, ..., energy storage unit n-1 1012 and energy storage unit n 1011, and where energy storage unit 1 1014 includes a corresponding switch Kq1, energy storage unit 2 1013 includes a corresponding switch Kq2, energy storage unit n-1 1012 includes a corresponding switch Kqn-1, and energy storage unit n 1011 includes a corresponding switch Kqn, if switch Kq2 is closed and the remaining switches in the other energy storage units (i.e., the third switch module) are turned off, then energy storage units 1 1014 and 2 1013 are connected in series with the AC / DC conversion module 102 to jointly provide the second charging power to the charging module 103; or, it should be understood that if switch Kqn is closed and the switches in the other energy storage units are turned off, then energy storage units 1 1014 to energy storage unit n 1011 are connected in series. 1011 is connected in series with AC / DC conversion module 102, together providing a second charging power to charging module 103.

[0162] This disclosure provides an integrated energy storage and charging device that controls the number of energy storage units connected in series with an AC / DC conversion module based on the switching state of a third switching module. This allows for flexible selection of the number of connected energy storage units according to the charging power requirements of the device being charged, improving charging flexibility.

[0163] In yet another embodiment of this disclosure, based on Figures 7, 8, 9, and 10 of the foregoing embodiments, the integrated storage and charging device 10 further includes a control module 106; wherein:

[0164] The control module 106 is connected to the first switch module 104, the second switch module 105 and the third switch module, and is configured to send drive signals to the first switch module 104, the second switch module 105 and the third switch module; wherein, the drive signals are used to control the on and off states of the first switch module 104, the second switch module 105 and the third switch module.

[0165] In this embodiment of the disclosure, the control module 106 may also be referred to as the control unit of the integrated storage and charging device 10, and may include devices such as a microcontroller unit (MCU), sensors, and switching circuits, for monitoring, controlling and managing the integrated storage and charging device 10.

[0166] In this embodiment of the disclosure, the control module 106 can send a drive signal to each switch in the first switch module 104, the second switch module 105, and the third switch module. It should be understood that each drive signal can have a different level state, and the corresponding switch can be turned on or off based on the level state of the drive signal. For example, when the drive signal is in a high level state, the corresponding switch can be turned on, and when the drive signal is in a low level state, the corresponding switch can be turned off.

[0167] In this embodiment of the disclosure, the control module 106 can also be used to detect and monitor the current and voltage of each module in the integrated storage and charging device 10, and to issue an alarm in a timely manner when an abnormality occurs.

[0168] It should also be noted that the control module 106 can also be connected to the interactive interface of the integrated energy storage and charging device 10. Based on the operation selected by the user in the interactive interface, it generates drive signals to control the opening and closing state of each switch, so as to charge the device 202 to be charged in a charging mode based on the user's needs, or to feed back electrical energy to the power grid.

[0169] This disclosure provides an integrated energy storage and charging device, in which a control module controls the on / off state of various switches to enable the device to perform different functions. This improves the convenience and safety of controlling the integrated energy storage and charging device.

[0170] In some embodiments, as shown in Figures 7, 8, 9, and 10 of the foregoing embodiments, the integrated storage and charging device 10 further includes a communication module 107; the communication module 107 is connected to the control module 106; wherein:

[0171] The control module 106 is configured to acquire the status parameters of the integrated storage and charging device 10 and send the status parameters of the integrated storage and charging device 10 to the communication module 107.

[0172] The communication module 107 is configured to receive the status parameters of the integrated storage and charging device 10 and forward them to the cloud platform.

[0173] In this embodiment of the disclosure, the communication module 107 can also be called a wireless communication module. It has communication functions and can receive the status parameters of each module in the integrated storage and charging device 10 collected by the control module 106, such as input current, output current, input voltage, output voltage and other parameters, and transmit these status parameters to the cloud platform.

[0174] In this embodiment, the communication module 107 can also receive control signals from the cloud platform and send them to the control module 106, enabling the control module 106 to generate drive signals based on the control signals to control the opening and closing of each switch. The control signals can be generated based on user operations on the cloud platform's interactive interface. For example, the user can perform batch operations on the integrated charging and storage device 10 by selecting different charging modes or discharging modes to the power grid.

[0175] This disclosure provides an integrated energy storage and charging device, in which the communication module feeds back the status parameters collected by the control module to the cloud platform. This allows for timely storage of the device's operational data and provides insights into its operational status, thereby improving the device's reliability.

[0176] In some embodiments, the AC / DC conversion module is a bidirectional AC / DC module.

[0177] It should be noted that the AC / DC conversion module can also be an isolated unidirectional AC / DC module or an isolated bidirectional AC / DC module. It has an internal isolation chip to isolate the integrated energy storage and charging device 10 from the grid side. The specific structure of the AC / DC conversion module is not limited here.

[0178] In this embodiment of the disclosure, when the AC / DC conversion module is a bidirectional ACDC module, it can not only charge the energy storage module and / or the device to be charged 202, but also feed the electrical energy of the energy storage module or the device to be charged 202 back to the AC power grid 201.

[0179] It should also be noted that when an external power source provides DC power, the integrated charging and storage device 10 can be charged via the input interface.

[0180] This disclosure provides an integrated energy storage and charging device, with the AC / DC conversion module being a bidirectional AC / DC module. This enables bidirectional power exchange between the integrated energy storage and charging device and the AC power grid. The integrated energy storage and charging device can not only charge the devices to be charged but also feed power back to the grid, contributing to peak shaving and valley filling of the power grid, improving grid stability and energy utilization.

[0181] In some embodiments, the ratio between the rated energy and rated power of the energy storage module is less than or equal to a first preset value; the ratio between the input power and output power of the integrated energy storage and charging device 10 is less than or equal to a second preset value; wherein the first preset value is greater than the second preset value.

[0182] In this embodiment of the disclosure, for example, the first preset value can be 1:3 and the second preset value can be 1:4.

[0183] It should be noted that the rated energy of an energy storage module refers to the amount of electricity it can store, i.e., its capacity. The rated power of an energy storage module refers to its output power. It should be understood that both the rated energy and rated power of an energy storage module are related to the number of energy storage units it contains. The ratio between the rated energy and rated power of an energy storage module is less than or equal to 1:3, and can be 1:4, 1:5, etc., depending on the actual demand for the second charging power output.

[0184] It should also be noted that the input power of the integrated energy storage and charging device 10 is the power input from the AC grid to the integrated energy storage and charging device 10, and the output power of the integrated energy storage and charging device 10 is the third charging power provided by the charging module to the device to be charged. The ratio between the input power and the output power of the integrated energy storage and charging device 10 is less than or equal to 1:4, that is, it can be 1:5, 1:6, etc. For example, when the ratio is 1:4, it means that the output power of the integrated energy storage and charging device 10 is 4 times the input power. Assuming that the input power of the integrated energy storage and charging device 10 is 150 kW, its output power can reach 600 kW, of which 450 kW is provided by the energy storage module.

[0185] This disclosure provides an integrated energy storage and charging device. By limiting the ratio between the rated energy and rated power of the energy storage module, and the ratio between the input power and output power of the integrated energy storage and charging device, it is possible to achieve high cost-effectiveness and good performance under the condition of low power input and high power output.

[0186] In some embodiments, the first charging power is less than or equal to 150 kW, and the third charging power is greater than or equal to 360 kW.

[0187] The first charging power is the power output by the AC / DC conversion module after converting the AC power grid, and the third charging power is the power provided by the charging module to the device 202 to be charged.

[0188] It should be understood that, based on the foregoing embodiments, by selecting an appropriate number of energy storage units, or by controlling the number of energy storage units connected to the charging circuit based on the on and off control of the third switch K3, the output power of the charging module can reach 360 kW, 500 kW, 800 kW, and 900 kW, etc., to meet the needs of supercharging / fast charging.

[0189] It should be noted that the second charging power required by the energy storage module can be determined based on the difference between the third charging power required by the charging module for the device to be charged 202 and the first charging power output by the AC / DC conversion module. This allows for the configuration of the number of energy storage units and batteries, ensuring that the charging module outputs the required third charging power. For example, if the required third charging power is 360 kW and the first charging power is 150 kW, the second charging power output by the energy storage module needs to be 210 kW.

[0190] This disclosure provides an integrated energy storage and charging device that limits the first charging power and the third charging power, enabling the integrated energy storage and charging device to achieve low power input and high power output without the need for an additional transformer, thereby realizing the supercharging of the device to be charged.

[0191] In another embodiment of this disclosure, a charging control method is provided, which is applied to the integrated energy storage and charging device 10 in the foregoing embodiment. As shown in FIG1, the integrated energy storage and charging device 10 includes an energy storage module 101 and a charging module 103.

[0192] As shown in Figure 12, the method may include:

[0193] S301 converts the power supplied by the AC grid to AC / DC through an AC / DC conversion module, outputs a first charging power based on the working state of the AC / DC conversion module, and outputs a second charging power through an energy storage module.

[0194] The AC / DC conversion module has two operating states: positive polarity and reverse polarity.

[0195] S302, the first charging power and the second charging power are connected in series and provided to the charging module for charging output, and the third charging power output by the charging module is provided to the device to be charged for charging.

[0196] The third charging power is greater than the first charging power.

[0197] In some embodiments, as shown in FIG5, the integrated storage and charging device 10 further includes a first switch module, which includes a first switch and a second switch; the method further includes:

[0198] When both the first and second switches are in the ON state, the charging module can charge the device to be charged based on the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module.

[0199] In some embodiments, as shown in FIG6, the integrated storage and charging device 10 further includes a first switch module 104, which includes a first switch K1, a second switch K2, a third switch K3, a fourth switch K4, and a fifth switch K5; the method further includes:

[0200] When the first switch K1, the second switch K2, the third switch K3, and the fourth switch K4 are all in the ON state and the fifth switch K5 is in the OFF state, the charging module 103 is configured to charge the device 202 to be charged based on the first charging power provided by the AC / DC conversion module 102 and the second charging power provided by the energy storage module 101; or, it is further configured to charge the device 202 to be charged based on the first charging power provided by the AC / DC conversion module 102, or to feed back electrical energy to the AC grid based on the output power of the device 202 to be charged, when the first switch K1, the second switch K2, and the fifth switch K5 are all in the ON state and the third switch K3 and the fourth switch K4 are in the OFF state.

[0201] In some embodiments, as shown in FIG7, the integrated storage and charging device 10 further includes a second switch module 105, which includes a sixth switch K6; the method further includes:

[0202] When the fourth switch K4, the fifth switch K5 and the sixth switch K6 are all in the on state, the energy storage module 101 is charged based on the first charging power provided by the AC-DC conversion module 102, or the energy storage module 101 is fed back to the AC grid based on the output power of the energy storage module 101.

[0203] In some embodiments, as shown in FIG8, the integrated storage and charging device 10 further includes a second switch module 105, which includes a seventh switch K7 and an eighth switch K8; the method further includes:

[0204] When both the seventh switch K7 and the eighth switch K8 are in the ON state, the energy storage module 101 is charged based on the first charging power provided by the AC-DC conversion module 102; or the energy storage module 101 is fed back to the AC grid based on the output power of the energy storage module 101.

[0205] In some embodiments, as shown in FIG10, the energy storage module 101 includes at least one energy storage unit, each energy storage unit including an energy storage battery, and at least a portion of the at least one energy storage unit includes a third switching module; the method may further include:

[0206] When the third switch module is in the ON state, the third switch module connects at least one energy storage unit in the charging circuit where the third switch K3 is located in series to provide the second charging power.

[0207] In some embodiments, as shown in Figures 7, 8, 9, and 10 of the foregoing embodiments, the integrated storage and charging device 10 further includes a control module 106; the method may further include:

[0208] The control module 106 sends drive signals to the first switch module 104, the second switch module 105, the third switch module, and the third switch module, and controls the on and off states of the first switch module 104, the second switch module 105, the third switch module, and the third switch module according to the drive signals.

[0209] In some embodiments, as shown in Figures 7, 8, 9, and 10 of the foregoing embodiments, the integrated storage and charging device 10 further includes a communication module 107; the method may further include:

[0210] The control module 106 acquires the status parameters of the integrated storage and charging device and sends the status parameters of the integrated storage and charging device to the communication module 107;

[0211] The communication module 107 receives the status parameters of the integrated storage and charging device and forwards them to the cloud platform.

[0212] This disclosure provides a charging control method in which a first charging power provided by an AC / DC conversion module and a second charging power provided by an energy storage module jointly charge the charging module, enabling the charging module to provide a third charging power to the device to be charged. Thus, because the energy storage module can output a higher second charging power, the integrated energy storage and charging device, based on the low power provided by the AC grid, can enable the charging module to output a larger third charging power that meets the needs of supercharging / fast charging. Therefore, no additional transformer is required in the circuit, reducing the cost and size of the integrated energy storage and charging device. Furthermore, it is not limited by the transformer connection point and can be connected to any location on the AC grid, improving the flexibility of the integrated energy storage and charging device and facilitating fast charging of electric vehicles.

[0213] In another embodiment of this disclosure, FIG13 is a schematic diagram of the composition structure of a charging pile provided in an embodiment of this disclosure. As shown in FIG13, the charging pile 40 includes the integrated storage and charging device 10 in the aforementioned embodiment.

[0214] In this embodiment, the charging pile 40 may include the integrated storage and charging device 10 in the aforementioned embodiments, as well as other devices that interact with the user and supporting components, etc., which are not specifically limited here.

[0215] In another embodiment of this disclosure, FIG14 is a schematic diagram of the composition structure of a charging system provided in an embodiment of this disclosure. As shown in FIG14, the charging system includes a device to be charged 202 and a charging pile 40 as described in the previous embodiment.

[0216] As in the aforementioned embodiments, the charging pile 40 includes an integrated energy storage and charging device, which charges the device 202 to be charged.

[0217] The integrated energy storage and charging device has a low input power (≤150kW) and a high output power (≥360kW). In other words, when the input power is ≤150kW, the system output power reaches ≥360kW through the internal energy storage module. Furthermore, the AC / DC converter module connected to the transformer, i.e., the bidirectional AC / DC device, has a rated power of ≤150kW.

[0218] In addition, the ratio of rated energy to rated power of the energy storage module is no greater than 1:3. Based on the energy storage module, the ratio of input power to output power of the integrated energy storage and charging device can be no greater than 1:4.

[0219] In this embodiment of the disclosure, by connecting the energy storage device in series in the AC / DC output high-voltage circuit, an ultimate system architecture can be achieved. It can achieve the function of low power input and high power output without the need for a DC-DC power module, thereby significantly reducing costs.

[0220] As shown in Figure 1, the negative terminal of the energy storage module 101 inside the integrated energy storage and charging device 10 is connected to the device to be charged 202, i.e., the negative terminal of the vehicle battery system. The internal energy storage module 101 of the integrated energy storage and charging device 10 is connected in series with the vehicle battery system, and the vehicle battery system is charged by AC / DC. That is, the internal energy storage module 101 of the integrated energy storage and charging device 10 is connected in series with the electric vehicle battery, and the positive terminal of the energy storage module 101 is connected to the positive terminal of the electric vehicle battery. Wherein, U1-U2≤250V, AC / DC power P≤150kW, charging power for the vehicle P≥360kW, U1 is the voltage value corresponding to the device to be charged 202, and U2 is the voltage value corresponding to the energy storage module 101.

[0221] In this embodiment of the present disclosure, as shown in FIG2, the energy storage module 101 inside the integrated energy storage and charging device 10 can also be connected in series with the electric vehicle battery, and the negative terminal of the energy storage module 101 is connected to the negative terminal of the electric vehicle. As shown in FIG2 and FIG3, U1-U2≤Uq (e.g., Uq≤350V), the electric vehicle battery is charged through the AC / DC conversion module 102, i.e., AC / DC. At this time, the electric vehicle battery is in a charging state, and the energy storage device inside the integrated energy storage and charging device 10 is in a discharging state. Here, U1 is the voltage value corresponding to the device to be charged 202, U2 is the voltage value corresponding to the energy storage module 101, and Uq is the voltage value output by the AC grid after conversion.

[0222] As shown in Figure 7, charging and V2G functions can be achieved by controlling the on or off state of multiple switches.

[0223] When the integrated energy storage and charging device 10 charges the vehicle, K5 and K6 are disconnected, and K1, K2, K3, and K4 are closed. The energy storage module 101 is connected in series in the AC / DC high-voltage circuit, and the energy storage module 101 and the AC / DC device charge the vehicle together. At this time, the energy storage module 101 is in a discharging state, and the AC / DC is in a charging state for the entire vehicle.

[0224] When there is no car charging, and only the AC power grid supplies energy to the internal energy storage module 101 of the integrated energy storage and charging device 10, it is necessary to disconnect K1, K2 and K3 and close K4, K5 and K6 to allow the AC power grid to charge the energy storage module 101 independently.

[0225] When the integrated energy storage and charging device 10 is charging a car, and the energy storage device inside the device is insufficient, the car needs to be charged solely by the power grid. In this case, K3, K4, and K6 need to be disconnected, and K1, K2, and K5 need to be closed. The AC power grid then charges the device 202 to be charged separately.

[0226] When V2G functionality is implemented, the vehicle feeds electrical energy back to the AC power grid. This requires disconnecting K3, K4, and K6, and closing K1, K2, and K5. The charging device 202 then feeds electrical energy back to the AC power grid.

[0227] When the energy storage device is to feed electrical energy back to the grid, it is necessary to disconnect K1, K2, and K3, and close K4, K5, and K6. The integrated unit's internal energy storage device feeds electrical energy back to the grid.

[0228] As shown in Figure 8, the positive terminal of the energy storage module 101 is connected to the negative terminal of the AC / DC converter module 102 (i.e., the AC / DC device) via K3. The negative terminal of the energy storage module 101 is connected to the negative terminal of the charging gun via K4 and K2. The positive terminal of the AC / DC device is connected to the positive terminal of the charging gun via K1, thus connecting the energy storage module 101 in series in the AC / DC high-voltage circuit. The energy storage module 101 is directly connected in series in the high-voltage circuit to the device 202 to be charged, such as a car charger.

[0229] When the integrated energy storage and charging device 10 charges the vehicle, K5, K7, and K8 are disconnected, and K1, K2, K3, and K4 are closed. The energy storage module 101 is connected in series in the AC / DC high-voltage circuit, and the energy storage module 101 and the AC / DC device charge the vehicle together. At this time, the energy storage module 101 is in a discharging state, and the AC / DC device is in a charging state for the entire vehicle.

[0230] When there is no car charging, close K7 and K8, and open K1, K2, K3, K4, and K5. Grid power charges energy storage module 101 via AC / DC converter.

[0231] When the V2G function is enabled, K1, K2, and K5 are closed, while K3, K4, K7, and K8 are opened. The vehicle's electrical energy is fed back to the power grid through the AC / DC converter.

[0232] As shown in Figure 9, the positive terminal of the energy storage module 101 is connected to the negative terminal of the AC / DC device via K3. The negative terminal of the energy storage device is connected to the negative terminal of the charging gun via K4 and K2. The positive terminal of the AC / DC device is connected to the positive terminal of the charging gun via K1, thus connecting the energy storage device in series in the AC / DC high-voltage circuit. The energy storage device is directly connected in series in the high-voltage circuit to charge the vehicle.

[0233] When charging the car, disconnect K7 and K8, and close K1, K2, K3, and K4. The energy storage module 101 is connected in series in the AC / DC high-voltage circuit, and the energy storage module 101 and the AC / DC device charge the car together. At this time, the energy storage module 101 is in a discharging state, and the AC / DC is in a charging state for the entire vehicle.

[0234] When there is no car charging, close K7 and K8, and open K1, K2, K3, and K4. Grid power charges the energy storage device via AC / DC.

[0235] As shown in Figure 10, to adapt to different vehicle voltage platforms (e.g., 400V or 800V), the energy storage module 101 is divided into energy storage units 1 to 2. Each energy storage unit is connected to the high-voltage circuit by individually closing one of the following switches: Kq1, Kq2, Kqn-1, or Kqn. The energy storage units connected to the high-voltage circuit are connected in series with an AC / DC device (by opening K5, K6, and K7 and closing K1, K2, K3, and K4) to charge the vehicle. For example, when the vehicle voltage platform is 400V, Kq2 can be closed, and switches Kq1, Kqn-1, and Kqn can be opened to connect energy storage units 1 and 2 to the high-voltage circuit. Similarly, when the vehicle voltage platform is 800V, Kqn can be closed, and switches Kq1, Kq2, and Kqn-1 can be opened to connect energy storage units 1, 2, 3, and 4 to the high-voltage circuit.

[0236] Similarly, when there is no car charging available, the energy storage device can be connected to the high-voltage circuit by closing one of the switches Kq1, Kq2, Kqn-1, or Kqn individually. At the same time, by closing K6 and K7 and opening K1, K2, K3, K4, and K5, grid power can be used to charge the energy storage module 101 via AC / DC.

[0237] When the V2G function is enabled, close switches K1, K2, and K5, and open switches K3, K4, K6, and K7. The energy storage unit can be connected to the high-voltage circuit by individually closing one of switches Kq1, Kq2, Kqn-1, or Kqn, thus realizing the V2G function.

[0238] In some embodiments, FIG15 is a schematic diagram of the composition structure of a charging system provided in this disclosure. As shown in FIG15, the charging module in the charging pile 40 includes a charging gun 401, and the output end of the charging gun 401 is connected to the device to be charged 202; wherein:

[0239] The integrated energy storage and charging device is used to charge the device to be charged 202 through a charging gun according to the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module; wherein the third charging power is greater than the first charging power.

[0240] It should be noted that, in the embodiments disclosed herein, the charging module and / or charging gun may be disposed inside the integrated storage and charging device or outside the integrated storage and charging device, and connected to the integrated storage and charging device when the device to be charged 202 needs to be charged, without any specific limitation.

[0241] In some embodiments, FIG16 is a schematic diagram of the composition structure of a charging system provided in this disclosure. As shown in FIG16, the charging system 50 further includes a cloud platform 501, which is connected to the integrated storage and charging device; wherein: the cloud platform 501 is configured to receive the status parameters of the integrated storage and charging device.

[0242] In this embodiment of the disclosure, the cloud platform 501 can be set on a cloud server to obtain the status parameters collected by the control module in the integrated storage and charging device and display them to the operator.

[0243] This disclosure provides a charging system that charges a device using a charging gun, improving the stability of the charging process. Furthermore, it receives status parameters of the integrated charging and storage device via a cloud platform, facilitating real-time monitoring of the device's status and enabling timely handling of any anomalies.

[0244] It should be understood that those skilled in the art will recognize that this disclosure may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0245] It should also be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this disclosure, the sequence numbers of the above steps / processes do not imply a sequential order of execution; the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure. The sequence numbers of the above embodiments of this disclosure are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0246] It should be noted that, in this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0247] In the several embodiments provided in this disclosure, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components may be combined, or integrated into another system, or some features may be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0248] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the embodiments of this disclosure, all functional units may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in hardware or in a combination of hardware and software functional units.

[0249] The above are merely preferred embodiments of this disclosure and are not intended to limit the scope of protection of this disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An integrated energy storage and charging device, comprising an energy storage module and a charging module, wherein: The first input terminal of the charging module is connected to the first output terminal of the AC / DC conversion module, the first terminal of the energy storage module is connected to the second output terminal of the AC / DC conversion module, the second terminal of the energy storage module is connected to the second input terminal of the charging module, and the input terminal of the AC / DC conversion module is connected to the AC power grid; the operating states of the AC / DC conversion module include a positive polarity operating state and a reverse polarity operating state, and the AC / DC conversion module is configured to provide a first charging power based on the operating states; The charging module is configured to output charging power based on the first charging power and the second charging power provided by the energy storage module in series, and to provide the third charging power output by the charging module to the device to be charged for charging; wherein the third charging power is greater than the first charging power.

2. The integrated storage and charging device according to claim 1, wherein, The positive terminal of the energy storage module is connected to the negative terminal of the AC / DC conversion module, the negative terminal of the energy storage module is connected to the negative terminal of the charging module, and the positive terminal of the charging module is connected to the positive terminal of the AC / DC conversion module; or, The negative terminal of the energy storage module is connected to the positive terminal of the AC / DC conversion module, the positive terminal of the energy storage module is connected to the positive terminal of the charging module, and the negative terminal of the charging module is connected to the negative terminal of the AC / DC conversion module.

3. The integrated storage and charging device according to claim 2, wherein, The integrated energy storage and charging device also includes an AC / DC conversion module; wherein: The AC / DC conversion module is configured to provide a first charging power to the charging module and the energy storage module.

4. The integrated storage and charging device according to claim 1, wherein, The integrated energy storage and charging device also includes a first switch module; The first switch module includes a first switch and a second switch. The first switch is connected in series between the first output terminal of the AC / DC conversion module and the first input terminal of the charging module, and the second switch is connected in series between the second terminal of the energy storage module and the second input terminal of the charging module.

5. The integrated storage and charging device according to claim 4, wherein, The first switch module also includes a third switch, a fourth switch, and a fifth switch; One end of the third switch is connected to the second output terminal of the AC / DC conversion module and one end of the fifth switch, respectively. The other end of the third switch is connected to the first terminal of the energy storage module. One end of the fourth switch is connected to the second terminal of the energy storage module. The other end of the fourth switch is connected to the other end of the fifth switch and one end of the second switch, respectively. The other end of the second switch is connected to the second input terminal of the charging module.

6. The integrated storage and charging device according to claim 5, wherein, The integrated storage and charging device also includes a second switch module, which includes a sixth switch. One end of the sixth switch is connected to the first output terminal of the AC / DC conversion module, and the other end of the sixth switch is connected to the first terminal of the energy storage module and one end of the third switch, respectively.

7. The integrated storage and charging device according to claim 5, wherein, The integrated storage and charging device also includes a second switch module, which includes a seventh switch and an eighth switch. The seventh switch is connected in series between the first output terminal of the AC / DC conversion module and the first terminal of the energy storage module, and the eighth switch is connected in series between the second output terminal of the AC / DC conversion module and the second terminal of the energy storage module.

8. The integrated storage and charging device according to any one of claims 1 to 7, wherein, The energy storage module includes at least one energy storage unit, wherein: The at least one energy storage unit is connected in series and / or in parallel between the first end of the energy storage module and the second end of the energy storage module to provide the second charging power.

9. The integrated storage and charging device according to claim 8, wherein, Each of the energy storage units includes an energy storage battery, and each of the energy storage units is configured to provide a fourth charging power based on the electrical energy of the energy storage battery; wherein the fourth charging power is less than or equal to the second charging power.

10. The integrated storage and charging device according to claim 9, wherein, At least a portion of the at least one energy storage unit includes a third switching module, which is connected in series between the first terminal of the corresponding energy storage unit and the second output terminal of the AC / DC conversion module.

11. The integrated storage and charging device according to any one of claims 1 to 10, wherein, The integrated storage and charging device also includes a control module; wherein: The control module is connected to the first switch module, the second switch module, and the third switch module, and is configured to send drive signals to the first switch module, the second switch module, and the third switch module; wherein, the drive signals are used to control the on and off states of the first switch module, the second switch module, and the third switch module.

12. The integrated storage and charging device according to any one of claims 1 to 11, wherein, The integrated storage and charging device further includes a communication module; the communication module is connected to the control module; wherein: The control module is configured to acquire the status parameters of the integrated storage and charging device and send the status parameters of the integrated storage and charging device to the communication module; The communication module is configured to receive the status parameters of the integrated storage and charging device and forward them to the cloud platform.

13. The integrated storage and charging device according to any one of claims 1 to 12, wherein, The AC / DC conversion module is a bidirectional AC / DC module.

14. The integrated storage and charging device according to any one of claims 1 to 12, wherein, The ratio between the rated energy and rated power of the energy storage module is less than or equal to a first preset value; The ratio between the input power and the output power of the integrated energy storage and charging device is less than or equal to a second preset value; wherein the first preset value is greater than the second preset value.

15. The integrated storage and charging device according to any one of claims 1 to 12, wherein, The first charging power is less than or equal to 150 kilowatts, and the third charging power is greater than or equal to 360 kilowatts.

16. A charging control method applied to an integrated energy storage and charging device, the integrated energy storage and charging device comprising an energy storage module and a charging module, the method comprising: The AC-DC conversion module converts the power supplied by the AC grid into AC-DC power, outputs a first charging power based on the working state of the AC-DC conversion module, and outputs a second charging power through the energy storage module. The working state of the AC-DC conversion module includes a positive polarity working state and a reverse polarity working state. The first charging power and the second charging power are connected in series and provided to the charging module for charging output, and the third charging power output by the charging module is provided to the device to be charged for charging; wherein the third charging power is greater than the first charging power.

17. The method according to claim 16, wherein, The integrated storage and charging device further includes a first switch module, which includes a first switch and a second switch; the method further includes: When both the first switch and the second switch are in the ON state, the charging module can charge the device to be charged based on the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module.

18. The method according to claim 17, wherein, The integrated storage and charging device further includes a first switch module, which comprises a first switch, a second switch, a third switch, a fourth switch, and a fifth switch; the method further includes: When the first switch, the second switch, the third switch, and the fourth switch are all in the ON state and the fifth switch is in the OFF state, the charging module is configured to charge the device to be charged based on the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module; or, it is further configured to charge the device to be charged based on the first charging power provided by the AC / DC conversion module, or to feed back electrical energy to the AC grid based on the output power of the device to be charged, when the first switch, the second switch, and the fifth switch are all in the ON state and the third switch and the fourth switch are in the OFF state.

19. The method according to claim 18, wherein, The integrated storage and charging device further includes a second switch module, which includes a sixth switch; the method further includes: When the fourth switch, the fifth switch, and the sixth switch are all in the ON state, the energy storage module is charged based on the first charging power provided by the AC-DC conversion module, or the energy storage module feeds back electrical energy to the AC grid based on the output power of the energy storage module.

20. The method according to claim 18, wherein, The integrated storage and charging device further includes a second switch module, which includes a seventh switch and an eighth switch; the method further includes: When both the seventh and eighth switches are in the ON state, the energy storage module is charged based on the first charging power provided by the AC-DC conversion module; or the energy storage module is fed back to the AC grid based on its output power.

21. The method according to any one of claims 16 to 20, wherein, The energy storage module includes at least one energy storage unit, and at least a portion of the at least one energy storage unit includes a third switching module; the method further includes: When the third switch module is in the ON state, the third switch module connects at least one energy storage unit in the charging circuit where the third switch is located in series to provide the second charging power.

22. A charging pile, the charging pile comprising an integrated energy storage and charging device as described in any one of claims 1 to 15.

23. A charging system comprising a device to be charged and a charging pile as described in claim 22.

24. The charging system according to claim 23, wherein, The charging module includes a charging gun, the output end of which is connected to the device to be charged; wherein: The integrated energy storage and charging device is used to charge the device to be charged through the charging gun according to the first charging power provided by the AC / DC conversion module and the second charging power provided by the energy storage module; wherein the third charging power is greater than the first charging power.

25. The charging system according to claim 23, wherein, The charging system also includes a cloud platform, which is connected to the integrated storage and charging device; wherein: The cloud platform is configured to receive the status parameters of the integrated storage and charging device.

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