Energy storage device and energy storage system
By designing an energy storage device including DC transformer units, battery modules and inverter units, the problem of parts that cannot be reused after the retirement of new energy vehicles is solved, and efficient utilization of resources and cost reduction are achieved.
Patent Information
- Application Number
- CN202421054514.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-11
AI Technical Summary
After the retirement of new energy vehicles, core components such as three-electric systems and high-voltage components have become industrial waste due to the end of the use cycle and cannot be reused, resulting in waste of resources.
An energy storage device is designed, including a DC transformer unit, a battery unit and an inverter unit. Through these components, the storage and release of electrical energy is realized, and the components are recycled.
The recycling of parts for recycling new energy vehicles has been achieved, extending the use time of parts, reducing the cost of energy storage devices, and avoiding waste of resources.
Smart Images
Figure CN222464207U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of energy storage technology, and in particular, to an energy storage device and an energy storage system. Background Art
[0002] With the increasing popularity of new energy vehicles, the number of retired new energy vehicles is also increasing year by year. The three-electric system and other high-voltage components of new energy vehicles, such as compressors and OBCs (Onboard Chargers), as core components and important components of new energy vehicles, often have a long service life. When new energy vehicles reach the end of their service life due to various factors, most of the components on the vehicle often have not reached the end of their service life, but these components usually become industrial waste, which not only cannot be used anymore, but also requires additional costs for processing, resulting in a waste of resources. Utility Model Content
[0003] The purpose of the present disclosure is to provide an energy storage device and an energy storage system to achieve the reuse of parts recycled from new energy vehicles.
[0004] In order to achieve the above-mentioned object, the present disclosure provides, in a first aspect, an energy storage device, comprising a DC transformer unit, a battery assembly and an inverter unit connected in sequence;
[0005] The DC transformer unit is used to convert the electric energy provided by the energy generation unit into DC power of a first target voltage to charge the battery assembly;
[0006] The inverter unit is used to convert the direct current output by the battery assembly into alternating current of a second target voltage to provide electric energy for a load connected to the inverter unit;
[0007] Among them, at least one of the DC transformer unit, the battery assembly and the inverter unit is a component recycled from a new energy vehicle.
[0008] Optionally, the DC transformation unit is any one of the electric drive assembly, the compressor assembly and the DC transformer of the new energy vehicle.
[0009] Optionally, the inverter unit is any one of an on-board AC charger, a compressor drive controller and a motor drive controller of the new energy vehicle.
[0010] Optionally, the DC transformer unit is an electric drive assembly of the new energy vehicle, and the inverter unit is an on-board AC charger or a compressor drive controller of the new energy vehicle.
[0011] Optionally, the motor of the electric drive assembly is used to connect to the energy generation unit, and is connected to the battery assembly through the motor drive controller of the electric drive assembly.
[0012] Optionally, the DC transformer unit is a compressor assembly of the new energy vehicle, and the inverter unit is an on-board AC charger or a motor drive controller of the new energy vehicle.
[0013] Optionally, the compressor of the compressor assembly is used to connect to the energy generation unit, and is connected to the battery assembly through a compressor drive controller of the compressor assembly.
[0014] Optionally, the DC transformation unit is a DC transformer of the new energy vehicle, and the inverter unit is any one of an on-board AC charger, a compressor drive controller and a motor drive controller of the new energy vehicle.
[0015] Optionally, the DC transformer unit is communicatively connected with the inverter unit to implement control over charging and discharging of the battery assembly.
[0016] Optionally, the DC transformer unit includes a charging management module, and the inverter unit includes a discharging management module;
[0017] The charging management module is communicatively connected to the discharging management module.
[0018] Optionally, the charging management module is a control module of components recycled from the new energy vehicle and used as the DC transformer unit; the discharging management module is a control module of components recycled from the new energy vehicle and used as the inverter unit.
[0019] A second aspect of the present disclosure provides an energy storage system, comprising an energy generation unit, a load, and the energy storage device provided in the first aspect of the present disclosure;
[0020] The energy generation unit is connected to the load through the energy storage device.
[0021] Optionally, the energy generation unit is a solar power generation component.
[0022] In the above technical solution, the DC transformer unit, the battery assembly and the inverter unit are connected in sequence to form an energy storage device. The DC transformer unit converts the electric energy provided by the energy generation unit into a DC power of a first target voltage to charge the battery assembly; the inverter unit converts the DC power output by the battery assembly into an AC power of a second target voltage to provide electric energy to the load; in this way, the electric energy can be stored in the battery assembly, and the energy stored in the battery assembly can be used to power the load when necessary. At least one of the DC transformer unit, the battery assembly and the inverter unit is a component recycled from a new energy vehicle; in this way, the energy storage device can be constructed using the components recycled from the new energy vehicle, so as to achieve the reuse of the components recycled from the new energy vehicle and avoid wasting resources.
[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0025] Figure 1 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0026] Figure 2 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0027] Figure 3 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0028] Figure 4 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0029] Figure 5 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0030] Figure 6 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0031] Figure 7 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0032] Figure 8 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0033] Fig. 9 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure.
[0034] Description of Reference Numerals
[0035] DETAILED DESCRIPTION
[0036] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0037] Figure 1 is a block diagram of an energy storage device provided by an exemplary embodiment of the present disclosure. Figure 1 As shown, the energy storage device 10 includes a DC transformer unit 11, a battery assembly 12 and an inverter unit 13 which are connected in sequence.
[0038] The DC transformer unit 11 is used to convert the electric energy provided by the energy generation unit 20 into a DC power of a first target voltage to charge the battery assembly 12;
[0039] The inverter unit 13 is used to convert the direct current output by the battery assembly 12 into alternating current of a second target voltage to provide electric energy to a load 30 connected to the inverter unit 13;
[0040] Among them, at least one of the DC transformer unit 11, the battery assembly 12 and the inverter unit 13 is a component recycled from a new energy vehicle.
[0041] For example, the first target voltage can be preset, for example, it can be set based on the voltage of the DC power allowed at the input end of the battery assembly 12. The energy generation unit 20 can convert other energy sources (such as solar energy or wind energy) into electrical energy. The voltage of the DC power output by the energy generation unit 20 is usually different from the value of the first target voltage. Therefore, the DC transformer unit 11 can be set to convert the electrical energy provided by the energy generation unit 20 into DC power of the first target voltage to charge the battery assembly 12 and realize energy storage.
[0042] For example, the second target voltage can be preset, for example, it can be set based on the working voltage of the load 30. For example, if the load 30 is a household appliance, the second target voltage can be set to 220V or 380V. The inverter unit 13 can invert the DC power output by the battery assembly 12 into 220V or 380V AC power to supply the load 30, so that the load 30 can work normally.
[0043] Taking the energy generation unit 20 as a solar power generation component, such as a photovoltaic panel, power generation can be achieved through the photovoltaic panel during the day, and the DC transformer unit 11 converts the electric energy from the photovoltaic panel into DC power of a first target voltage to charge the battery component 12; at night, in power outages and other usage scenarios, the electric energy stored in the battery component 12 can be released through the inverter unit 13 to supply power to the load 30.
[0044] In this way, electric energy can be stored in the battery assembly 12 through the energy storage device 10, and the energy stored in the battery assembly 12 can be used to power the load 30 when off-grid or in other emergency situations (such as unstable grid voltage).
[0045] Among them, at least one of the DC transformer unit 11, the battery assembly 12 and the inverter unit 13 is a component recycled from a new energy vehicle. For example, the DC transformer unit 11 can be any one of the electric drive assembly 111, the compressor assembly 112 and the DC transformer 113 of the new energy vehicle. For another example, the battery assembly 12 can be a battery pack of a new energy vehicle. For another example, the inverter unit 13 can be any one of the on-board AC charger 131, the compressor drive controller 132 and the motor drive controller 133 of the new energy vehicle. In this way, the energy storage device 10 can be constructed using components recycled from new energy vehicles, so as to achieve the reuse of components recycled from new energy vehicles, extend the use time of these reused components, and avoid waste of resources while reducing the cost of the energy storage device 10.
[0046] The energy storage device 10 provided in the present disclosure may be a household energy storage device. In this case, the load 30 is a common household appliance, and the energy generation unit 20 is a solar power generation component, specifically a photovoltaic panel.
[0047] In the above technical solution, the DC transformer unit 11, the battery assembly 12 and the inverter unit 13 are connected in sequence to form the energy storage device 10. The DC transformer unit 11 converts the electric energy provided by the energy generation unit 20 into a DC power of a first target voltage to charge the battery assembly 12; the inverter unit 13 converts the DC power output by the battery assembly 12 into an AC power of a second target voltage to provide electric energy for the load 30; in this way, the electric energy can be stored in the battery assembly 12, and the energy stored in the battery assembly 12 can be used to power the load 30 when necessary. At least one of the DC transformer unit 11, the battery assembly 12 and the inverter unit 13 is a component recycled from a new energy vehicle; in this way, the energy storage device 10 can be constructed using components recycled from new energy vehicles, so as to achieve the reuse of components recycled from new energy vehicles and avoid wasting resources.
[0048] In an optional embodiment, the DC transformer unit 11 is an electric drive assembly 111 of a new energy vehicle, and the inverter unit 13 is an onboard AC charger 131 or a compressor drive controller 132 of the new energy vehicle.
[0049] The electric drive assembly 111 is used as the DC transformer unit 11, and the vehicle-mounted AC charger 131 is used as the inverter unit 13, so that the energy storage device 10 is formed. Figure 2 The electric drive assembly 111 is used as the DC transformer unit 11, and the compressor drive controller 132 is used as the inverter unit 13, so that the energy storage device 10 is formed as shown. Figure 3 shown.
[0050] The voltage of the DC power provided by the energy generation unit 20 is usually lower than the first target voltage, so the low-voltage DC power needs to be converted into high-voltage DC power by the DC transformer unit 11. To achieve this purpose, in an optional embodiment, the motor of the electric drive assembly 111 is used to connect to the energy generation unit 20, and is connected to the battery assembly 12 through the motor drive controller of the electric drive assembly 111.
[0051] The electric drive assembly on the vehicle generally includes a motor, a motor drive controller and a transmission device (such as a reducer). The electric drive assembly 111 provided in the present disclosure may be a motor drive assembly with the transmission device removed in advance; or it may be a complete motor drive assembly on the vehicle, wherein the transmission device does not participate in the process of converting the electric energy provided by the energy generation unit 20 into direct current of the first target voltage, so that damage to other components in the electric drive assembly 111 during the disassembly process can be avoided.
[0052] The motor drive controller includes other electronic components such as a motor control module and a power switch. At this time, the electric drive assembly 111 used as the DC transformer unit 11 is equivalent to a BOOST circuit, wherein the winding of the motor of the electric drive assembly 111 is equivalent to the inductor in the BOOST circuit, and the power switch in the motor drive controller of the electric drive assembly 111 is equivalent to the power switch in the BOOST circuit. In this way, the voltage of the DC power can be increased by the electric drive assembly 111 to charge the battery assembly 12.
[0053] It should be noted that if the voltage of the direct current provided by the energy generation unit 20 is higher than the first target voltage, corresponding changes can be made to the connection of the electric drive assembly 111 in the energy storage device 10. Specifically, the motor drive controller of the electric drive assembly 111 is used to connect to the energy generation unit 20, and to connect to the battery assembly 12 through the motor of the electric drive assembly 111. In this way, the voltage of the direct current can be reduced to charge the battery assembly 12.
[0054] The on-board AC charger 131 is a rectifier device on the vehicle, and its purpose on the vehicle is to rectify the 220V or 380V grid voltage into a DC power of the battery pack voltage to charge the battery pack. In the energy storage device 10, relative to the vehicle, the on-board AC charger 131 can be regarded as reversely applied to invert the DC power output by the battery assembly 12 into an AC power of the second target voltage to supply the load 30.
[0055] The compressor drive controller on the vehicle includes other electronic components such as a compressor control module and a power switch. The compressor drive controller has an inverter function and can invert DC power into AC power. In this way, the compressor drive controller 132 recycled from the new energy vehicle is used as the inverter unit 13, which can invert the DC power output by the battery assembly 12 into AC power of the second target voltage to supply the load 30.
[0056] In an optional embodiment, the DC transformer unit 11 is a compressor assembly 112 of a new energy vehicle, and the inverter unit 13 is an onboard AC charger 131 or a motor drive controller 133 of the new energy vehicle.
[0057] The compressor assembly 112 is used as the DC transformer unit 11, and the vehicle-mounted AC charger 131 is used as the inverter unit 13, so that the energy storage device 10 is formed. Figure 4 The compressor assembly 112 is used as the DC transformer unit 11, and the motor drive controller 133 is used as the inverter unit 13, so that the energy storage device 10 is formed as shown. Figure 5 shown.
[0058] As mentioned above, the voltage of the DC power provided by the energy generation unit 20 is usually lower than the first target voltage. Therefore, in order to convert the low-voltage DC power into high-voltage DC power through the DC transformer unit 11, in an optional embodiment, the compressor of the compressor assembly 112 is used to connect to the energy generation unit 20 and to the battery assembly 12 through the compressor drive controller of the compressor assembly 112.
[0059] At this time, the compressor assembly 112 used as the DC transformer unit 11 is equivalent to a BOOST circuit, wherein the winding of the compressor of the compressor assembly 112 is equivalent to the inductor in the BOOST circuit, and the power switch in the compressor drive controller of the compressor assembly 112 is equivalent to the power switch in the BOOST circuit. The voltage of the DC power can be increased by the compressor assembly 112 to charge the battery assembly 12.
[0060] It should be noted that if the voltage of the direct current provided by the energy generation unit 20 is higher than the first target voltage, corresponding changes can be made to the connection of the compressor assembly 112 in the energy storage device 10. Specifically, the compressor drive controller of the compressor assembly 112 is used to connect to the energy generation unit 20, and to connect to the battery assembly 12 through the compressor of the compressor assembly 112. In this way, the voltage of the direct current can be reduced to charge the battery assembly 12.
[0061] The motor drive controller on the vehicle has an inverter function and can invert DC power into AC power. In this way, the motor drive controller 133 recycled from the new energy vehicle is used as the inverter unit 13 to invert the DC power output by the battery assembly 12 into AC power of the second target voltage to supply the load 30.
[0062] In an optional embodiment, the DC transformation unit 11 is a DC transformer 113 of a new energy vehicle, and the inverter unit 13 is any one of an onboard AC charger 131, a compressor drive controller 132 and a motor drive controller 133 of the new energy vehicle.
[0063] The DC transformer 113 is used as the DC transformer unit 11, and the vehicle-mounted AC charger 131 is used as the inverter unit 13, so that the energy storage device 10 is formed. Figure 6 The DC transformer 113 is used as the DC transformer unit 11, and the compressor drive controller 132 is used as the inverter unit 13, so that the energy storage device 10 is formed as shown. Figure 7 The DC transformer 113 is used as the DC transformer unit 11, and the motor drive controller 133 is used as the inverter unit 13, so that the energy storage device 10 is formed as shown in FIG. Figure 8 shown.
[0064] The DC transformer on the vehicle has the ability to convert DC power of one voltage level into DC power of another different voltage level. Therefore, the DC transformer 113 recycled from the new energy vehicle is used as the DC transformation unit 11, which can convert the electric energy provided by the energy generation unit 20 into DC power of the first target voltage to charge the battery assembly 12.
[0065] In an optional embodiment, the DC transformer unit 11 and the inverter unit 13 are communicatively connected to control the charging and discharging of the battery assembly 12 .
[0066] In such Fig. 9 In the illustrated embodiment, the DC transformer unit 11 includes a charging management module 110 , and the inverter unit 13 includes a discharging management module 130 ; the charging management module 110 and the discharging management module 130 are in communication connection.
[0067] For example, the charging management module 110 can control the electronic components in the DC transformer unit 11 according to the power of the battery assembly 12, such as controlling the duty cycle of the power switch therein, to control whether the battery assembly 12 is charged; the discharging management module 130 can control the electronic components in the inverter unit 13 according to the power of the battery assembly 12, such as controlling the duty cycle of the power switch therein, to control whether the battery assembly 12 is discharged. In order to avoid control errors of the charging management module 110 or the discharging management module 130, the charging management module 110 and the discharging management module 130 can be controlled to communicate with each other to exchange information and verify whether the control of the other party is reliable.
[0068] In an optional embodiment, the charging management module 110 is a control module of components recycled from new energy vehicles and used as the DC transformer unit 11; the discharging management module 130 is a control module of components recycled from new energy vehicles and used as the inverter unit 13.
[0069] For example, if the DC transformer unit 11 is an electric drive assembly 111, the charging management module 110 may be a motor control module in a motor drive controller of the electric drive assembly 111; if the DC transformer unit 11 is a compressor assembly 112, the charging management module 110 may be a compressor control module in a compressor drive controller of the compressor assembly 112; if the DC transformer unit 11 is a DC transformer 113, the charging management module 110 may be a control module in the DC transformer 113. If the inverter unit 13 is an on-board AC charger 131, the discharge management module 130 may be a control module in the on-board AC charger 131; if the inverter unit 13 is a compressor drive controller 132, the discharge management module 130 may be a compressor control module in the compressor drive controller 132; if the inverter unit 13 is a motor drive controller 133, the discharge management module 130 may be a motor control module in the motor drive controller 133.
[0070] In this way, by reusing the control modules among the parts recycled from new energy vehicles, the cost of the energy storage device 10 can be further reduced and waste of resources can be avoided.
[0071] The present disclosure further provides an energy storage system, comprising: an energy generation unit 20 , a load 30 , and the energy storage device 10 described in any one of the above embodiments; the energy generation unit 20 is connected to the load 30 via the energy storage device 10 .
[0072] In this way, an energy storage system can be constructed using recycled parts from new energy vehicles, and electrical energy can be stored in the battery assembly 12. When necessary, the energy stored in the battery assembly 12 can be used to power the load 30, thereby achieving the reuse of parts recycled from new energy vehicles and avoiding waste of resources.
[0073] The specific implementation of the energy storage device 10 has been described in detail above, and the repeated contents will not be repeated here.
[0074] In an optional embodiment, the energy generation unit 20 is a solar power generation component, specifically, a photovoltaic panel.
[0075] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0076] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0077] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. An energy storage device (10), characterized in that: It comprises a DC transformer unit (11), a battery assembly (12) and an inverter unit (13) which are connected in sequence; The DC transformer unit (11) is used to convert the electric energy provided by the energy generation unit (20) into DC power of a first target voltage so as to charge the battery assembly (12); The inverter unit (13) is used to convert the direct current output by the battery assembly (12) into alternating current of a second target voltage, so as to provide electric energy for a load (30) connected to the inverter unit (13); Wherein, at least one of the DC transformer unit (11), the battery assembly (12) and the inverter unit (13) is a component recycled from a new energy vehicle.
2. The energy storage device (10) according to claim 1, characterized in that: The DC transformer unit (11) is any one of the electric drive assembly (111), the compressor assembly (112) and the DC transformer (113) of the new energy vehicle.
3. The energy storage device (10) according to claim 1, characterized in that: The inverter unit (13) is any one of an onboard AC charger (131), a compressor drive controller (132), and a motor drive controller (133) of the new energy vehicle.
4. The energy storage device (10) according to claim 1, characterized in that: The DC transformer unit (11) is an electric drive assembly (111) of the new energy vehicle, and the inverter unit (13) is an onboard AC charger (131) or a compressor drive controller (132) of the new energy vehicle.
5. The energy storage device (10) according to claim 4, characterized in that: The motor of the electric drive assembly (111) is used to be connected to the energy generation unit (20), and is connected to the battery assembly (12) via the motor drive controller of the electric drive assembly (111).
6. The energy storage device (10) according to claim 1, characterized in that: The DC transformer unit (11) is a compressor assembly (112) of the new energy vehicle, and the inverter unit (13) is an onboard AC charger (131) or a motor drive controller (133) of the new energy vehicle.
7. The energy storage device (10) according to claim 6, characterized in that: The compressor of the compressor assembly (112) is used to be connected to the energy generation unit (20), and is connected to the battery assembly (12) via a compressor drive controller of the compressor assembly (112).
8. The energy storage device (10) according to claim 1, characterized in that: The DC transformer unit (11) is a DC transformer (113) of the new energy vehicle, and the inverter unit (13) is any one of an onboard AC charger (131), a compressor drive controller (132), and a motor drive controller (133) of the new energy vehicle.
9. The energy storage device (10) according to any one of claims 1 to 8, characterized in that: The DC transformer unit (11) and the inverter unit (13) are in communication connection to achieve control over the charging and discharging of the battery assembly (12).
10. The energy storage device (10) according to claim 9, characterized in that: The DC transformer unit (11) comprises a charging management module (110), and the inverter unit (13) comprises a discharging management module (130); The charging management module (110) and the discharging management module (130) are communicatively connected.
11. The energy storage device (10) according to claim 10, characterized in that: The charging management module (110) is a control module among the components recycled from the new energy vehicle and used as the DC transformer unit (11); the discharging management module (130) is a control module among the components recycled from the new energy vehicle and used as the inverter unit (13).
12. An energy storage system, characterized in that: It comprises an energy generation unit (20), a load (30) and an energy storage device (10) as claimed in any one of claims 1 to 11; The energy generation unit (20) is connected to the load (30) via the energy storage device (10).
13. The energy storage system according to claim 12, characterized in that: The energy generation unit (20) is a solar power generation component.