Accelerating device hybrid energy storage system

Abstract

The utility model relates to the technical field of modularized energy storage systems, in particular to a hybrid energy storage system of an accelerating device, which comprises a charging module, an energy storage module, a voltage stabilizing module and an inversion module which are connected in sequence, the charging module comprises an isolation unit, a filtering unit and a rectification unit which are connected in sequence, the input end of the isolation unit is the input end of the charging module, and the output end of the rectification unit is the output end of the charging module; the energy storage module comprises an energy type energy storage unit and a power type energy storage unit, and the energy type energy storage unit and the power type energy storage unit are connected through a DC / DC converter. According to the hybrid energy storage system of the accelerating device, the energy type energy storage unit and the power type energy storage unit serve as energy storage devices of the system together, the advantages of the energy type energy storage unit and the power type energy storage unit in energy density and power density are fully exerted, and the hybrid energy storage system has the advantages of being small in size, light in weight, large in instantaneous power and stable in output.

Description

Technical Field

[0001] This utility model relates to the field of modular energy storage system technology, and specifically to an acceleration device hybrid energy storage system. Background Technology

[0002] Accelerators typically require energy storage systems capable of releasing large amounts of energy in a short time without occupying excessive volume or weight. Current energy storage devices are limited in form and cannot simultaneously achieve high power density and high energy density, nor can they coordinate operating rate and cycle life.

[0003] In summary, there is an urgent need for an acceleration device hybrid energy storage system to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this utility model is to provide a hybrid energy storage system for an acceleration device, and the specific technical solution is as follows:

[0005] An acceleration device hybrid energy storage system includes a charging module, an energy storage module, a voltage regulator module, and an inverter module connected in sequence.

[0006] The charging module includes an isolation unit, a filtering unit, and a rectifier unit connected in sequence. The input terminal of the isolation unit is the input terminal of the charging module, and the output terminal of the rectifier unit is the output terminal of the charging module.

[0007] The energy storage module includes an energy-type energy storage unit and a power-type energy storage unit, which are connected by a DC / DC converter.

[0008] Optionally, the hybrid energy storage system for the acceleration device may also include an energy management system, a charging module management system, an energy-type energy storage unit management system, and a power-type energy storage unit management system;

[0009] The energy management system is connected to the charging module management system, the energy storage unit management system, the power storage unit management system, the voltage regulator module, and the inverter module, and is used to control the charging or discharging of the hybrid energy storage system of the acceleration device.

[0010] The charging module management system is connected to the charging module and is used to adjust the charging power.

[0011] The energy storage unit management system connects to the energy storage unit;

[0012] The power-type energy storage unit management system connects to the power-type energy storage unit.

[0013] Optionally, the energy storage unit is an energy storage device with high energy density, and the energy storage unit includes at least one of lead-acid battery, lithium-ion battery, sodium-ion battery and flow battery.

[0014] Optionally, the power-type energy storage unit is an energy storage device with high power density, and the power-type energy storage unit includes at least one of supercapacitor, flywheel energy storage and lithium-ion capacitor.

[0015] Optionally, the input terminal of the charging module is connected to the power grid, the output terminal of the charging module is connected to the energy storage module, and the inverter module is connected to the load.

[0016] Optionally, a voltage regulator module is used to regulate the output power distribution ratio and output energy.

[0017] Optionally, the energy storage unit can also be connected to a voltage regulator module to form a topology that is connected in parallel with the power storage unit.

[0018] The application of the technical solution of this utility model has the following beneficial effects:

[0019] This invention provides a hybrid energy storage system for an acceleration device. The system integrates both energy-type and power-type energy storage units as its energy storage device, fully leveraging the advantages of each unit in terms of energy density and power density. This invention offers advantages such as small size, light weight, high instantaneous power, stable output, low requirements for auxiliary systems, high efficiency, and low operating and maintenance costs. It can achieve multiple high-power discharges without environmental damage.

[0020] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 This is a system framework diagram of the hybrid energy storage system of the acceleration device in a preferred embodiment of this utility model.

[0023] Among them, 100-grid, 200-charging module, 210-isolation unit, 220-filtering unit, 230-rectifier unit, 300-energy storage module, 310-energy-type energy storage unit, 320-DC / DC converter, 330-power-type energy storage unit, 400-voltage regulator module, 500-inverter module, 600-load, 710-energy management system, 720-charging module management system, 730-energy-type energy storage unit management system, and 740-power-type energy storage unit management system. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] Example:

[0026] See Figure 1 This embodiment provides an acceleration device hybrid energy storage system that is charged by the power grid 100. The acceleration device hybrid energy storage system includes a charging module 200, an energy storage module 300, a voltage regulator module 400 and an inverter module 500 connected in sequence.

[0027] Furthermore, the charging module 200 includes an isolation unit 210, a filtering unit 220, and a rectifier unit 230 connected in sequence. The input terminal of the isolation unit 210 is the input terminal of the charging module 200, and the output terminal of the rectifier unit 230 is the output terminal of the charging module 200.

[0028] In this embodiment, the isolation unit 210 is composed of a transformer, which can boost the grid voltage to a set value; the filter unit 220 is used to filter harmonics in the grid, maintain the stability of the hybrid energy storage system, and ensure the safety of the hybrid energy storage system; the rectifier unit 230 is composed of an AC / DC converter, which converts the boosted and filtered AC power into DC power to charge the energy storage module 300.

[0029] Furthermore, the energy storage module 300 includes an energy-type energy storage unit 310 and a power-type energy storage unit 330, which are connected by a DC / DC converter 320.

[0030] Furthermore, the energy storage unit 310 also has a lead-out connection to the voltage regulator module 400, forming a topology that is connected in parallel with the power storage unit 330.

[0031] In this embodiment, the energy storage unit 310 is an energy storage device with high energy density, used to store energy and take advantage of its high energy density. The energy storage unit 310 includes at least one of lead-acid battery, lithium-ion battery, sodium-ion battery and flow battery.

[0032] In this embodiment, the power-type energy storage unit 330 is a high-power-density energy storage device used to output high power in a short time and take advantage of its high power density. The power-type energy storage unit 330 includes at least one of a supercapacitor, a flywheel energy storage device, and a lithium-ion capacitor.

[0033] In a specific implementation case, the acceleration device hybrid energy storage system also includes an energy management system 710, a charging module management system 720, an energy-type energy storage unit management system 730, and a power-type energy storage unit management system 740.

[0034] The energy management system 710 is connected to the charging module management system 720, the energy storage unit management system 730, the power storage unit management system 740, the voltage regulator module 400, and the inverter module 500, respectively, and is used to control the charging or discharging of the hybrid energy storage system of the acceleration device.

[0035] The charging module management system 720 is connected to the charging module 200 and is used to adjust the charging power.

[0036] The energy storage unit management system 730 is connected to the energy storage unit 310 and is used to balance and manage the internal components of the energy storage unit 310.

[0037] The power-type energy storage unit management system 740 is connected to the power-type energy storage unit 330 and is used to balance and manage the internal components of the power-type energy storage unit 330.

[0038] In this embodiment, the energy management system 710 is used to control the charging or discharging of the hybrid energy storage system of the acceleration device. For example, the voltage regulator module 400 can receive signals from the energy management system 710 to adjust the output power distribution ratio and output energy.

[0039] In this embodiment, the output terminal of the inverter module 500 is connected to the load 600 to convert DC power into AC power, thereby driving the load to operate.

[0040] In this embodiment, in addition to the topology of the energy storage unit 310 and the power storage unit 330 being directly connected in parallel, the connection forms of the hybrid energy storage system of the acceleration device can also be: the power storage unit and the energy storage unit are connected in parallel through an inductor; the power storage unit is connected in series with a DC / DC converter and then in parallel with the energy storage unit; the energy storage unit is connected in series with a DC / DC converter and then in parallel with the power storage unit; and the power storage unit and the energy storage unit are each connected in series with a DC / DC converter and then in parallel.

[0041] The acceleration device hybrid energy storage system provided in this embodiment has three modes;

[0042] Energy storage mode:

[0043] In energy storage mode, the charging module 200 connects to the power grid 100 to charge the energy storage unit 310 and store the energy. At this time, the energy storage unit 310 is disconnected from the DC / DC converter 320 and the voltage regulator module 400.

[0044] Work mode:

[0045] In operating mode, the energy storage unit 310 first connects to the DC / DC converter 320 to charge the power storage unit 330 (generally, power storage units 330, such as supercapacitors, exhibit self-discharge, so they are only charged during use). After the power storage unit 330 is fully charged, it connects to the voltage regulator module 400 to supply power to the load 600. Energy flows to the load 600 in two paths: one path originates from the energy storage unit 310, passes through the voltage regulator module 400 and the inverter module 500, and flows to the load 600; the other path originates from the power storage unit 330, passes through the voltage regulator module 400 and the inverter module 500, and flows to the load 600. The energy management system 710 dynamically allocates the energy release ratio between the two paths according to the needs of the load 600.

[0046] Energy recovery mode:

[0047] In energy recovery mode, the energy recovered during the deceleration phase of load 600 is stored in energy storage unit 310 via inverter module 500 and voltage regulator module 400.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hybrid energy storage system for an acceleration device, characterized in that, It includes a charging module (200), an energy storage module (300), a voltage regulator module (400), and an inverter module (500) connected in sequence; The charging module (200) includes an isolation unit (210), a filtering unit (220) and a rectifier unit (230) connected in sequence. The input terminal of the isolation unit (210) is the input terminal of the charging module (200), and the output terminal of the rectifier unit (230) is the output terminal of the charging module (200). The energy storage module (300) includes an energy-type energy storage unit (310) and a power-type energy storage unit (330), which are connected by a DC / DC converter (320).

2. The acceleration device hybrid energy storage system according to claim 1, characterized in that, It also includes an energy management system (710), a charging module management system (720), an energy-type energy storage unit management system (730), and a power-type energy storage unit management system (740); The energy management system (710) is connected to the charging module management system (720), the energy storage unit management system (730), the power storage unit management system (740), the voltage regulator module (400), and the inverter module (500) respectively, and is used to control the charging or discharging of the hybrid energy storage system of the acceleration device. The charging module management system (720) is connected to the charging module (200) and is used to adjust the charging power. The energy storage unit management system (730) is connected to the energy storage unit (310); The power-type energy storage unit management system (740) is connected to the power-type energy storage unit (330).

3. The acceleration device hybrid energy storage system according to claim 1, characterized in that, The energy storage unit (310) is an energy storage device with high energy density. The energy storage unit (310) includes at least one of lead-acid battery, lithium-ion battery, sodium-ion battery and flow battery.

4. The acceleration device hybrid energy storage system according to claim 1, characterized in that, The power storage unit (330) is a high power density energy storage device, and the power storage unit (330) includes at least one of supercapacitor, flywheel energy storage and lithium-ion capacitor.

5. The acceleration device hybrid energy storage system according to claim 1, characterized in that, The input terminal of the charging module (200) is connected to the power grid (100), and the output terminal is connected to the energy storage module (300). The output terminal of the inverter module (500) is connected to the load (600).

6. The acceleration device hybrid energy storage system according to claim 1, characterized in that, The voltage regulator module (400) is used to regulate the output power distribution ratio and output energy.

7. The acceleration device hybrid energy storage system according to claim 1, characterized in that, The energy storage unit (310) also leads out a connection to the voltage regulator module (400), forming a topology that is connected in parallel with the power storage unit (330).

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