Off-grid inversion energy storage equipment

Abstract

The invention discloses off-grid inversion energy storage equipment, which comprises a box body, an inversion chamber and an energy storage chamber, the energy storage device is arranged in the energy storage chamber and is used for storing electric energy and providing direct-current or alternating-current electric energy; the off-grid inversion device is arranged in the inversion chamber and is used for inverting direct current into alternating current and storing the alternating current in the energy storage device; and the management device is arranged in the inversion chamber and is used for carrying out energy scheduling on the energy storage device. The inverter chamber and the energy storage chamber are compactly divided in a limited space to correspondingly accommodate the off-grid inverter device, the management device and the energy storage device, so that the technical problem of stable and reliable power supply operation in different use environments is solved, an energy distribution scheme is optimized, the power utilization requirement of a user is met, and the power utilization efficiency of the user is improved. The system has the advantages of high integration level, intelligent energy storage and power supply, small occupied area, neat internal wiring and the like, and is suitable for off-grid power generation occasions.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, specifically to an off-grid inverter energy storage device. Background Technology

[0002] Off-grid inverter energy storage devices are suitable for providing power in an off-grid state. However, existing off-grid inverter energy storage devices have the following defects: (1) The equipment structure is complex, the wiring is redundant and messy, it requires a lot of space, the overall integration is low, and the space utilization rate is low; (2) The energy storage capacity is low, resulting in low power supply efficiency and failure to meet power demand; (3) It cannot solve the problem of unstable power generation when in an off-grid environment; (4) It cannot output DC or AC power according to usage needs; (5) It cannot dissipate heat in time, resulting in poor heat dissipation effect. Summary of the Invention

[0003] To overcome the above-mentioned technical problems, this invention discloses an off-grid inverter energy storage device.

[0004] The technical solution adopted by the present invention to achieve the above objectives is as follows: An off-grid inverter energy storage device, comprising: The enclosure includes an inverter compartment and an energy storage compartment arranged on the upper and lower levels; An energy storage device, located in the energy storage chamber, is used to store electrical energy and provide DC or AC power. An off-grid inverter, located in the inverter room, is used to invert direct current into alternating current and store it in the energy storage device; A management device, located in the inverter room, is used for energy scheduling of the energy storage device.

[0005] The aforementioned off-grid inverter energy storage device includes several sets of battery frames stacked vertically, with several sets of battery stacks in each battery frame, and each battery stack includes several sets of energy storage batteries connected in parallel. The energy storage batteries are electrically connected to the off-grid inverter and the management device, respectively.

[0006] In the aforementioned off-grid inverter energy storage device, the management device includes an EMS module and a BMS module that are electrically connected. Both the EMS module and the BMS module are electrically connected to the energy storage device, and the EMS module is electrically connected to the off-grid inverter device.

[0007] The aforementioned off-grid inverter energy storage device further includes a first energy storage converter and a second energy storage converter, wherein the first energy storage converter and the second energy storage converter are electrically connected to the positive and negative terminals of the energy storage device, respectively.

[0008] The off-grid inverter energy storage device described above, wherein the off-grid inverter device includes an off-grid inverter, a first circuit breaker and a second circuit breaker, the off-grid inverter is electrically connected to the BMS module, the first circuit breaker is installed on the connection circuit between the mains power grid and the first energy storage converter, and the second circuit breaker is installed on the connection circuit between the second energy storage converter and the off-grid inverter.

[0009] The aforementioned off-grid inverter energy storage device, wherein the management device further includes several sets of DC discharge interfaces and AC discharge interfaces, all of which are electrically connected to the BMS module.

[0010] The off-grid inverter energy storage device described above, wherein the off-grid inverter device further includes a power filter, a DC filter and an AC filter, wherein the power filter is connected to the mains power through a plug connector and is electrically connected to the first circuit breaker, the DC filter is electrically connected to the DC discharge interface, and the AC filter is electrically connected to the AC discharge interface.

[0011] The aforementioned off-grid inverter energy storage device, wherein the management device further includes a first current transformer and a second current transformer, wherein the first current transformer is disposed on the connection circuit between the BMS module and the DC discharge interface, and the second current transformer is disposed on the connection circuit between the BMS module and the AC discharge interface.

[0012] The aforementioned off-grid inverter energy storage device, wherein the management device further includes a sampling mechanism, which is electrically connected to the second current transformer to detect the voltage of the DC discharge interface or the AC discharge interface.

[0013] The aforementioned off-grid inverter energy storage device includes a temperature and humidity controller, a temperature sensor, and a humidity sensor installed in the housing. The temperature and humidity controller is electrically connected to the EMS controller, and is electrically connected to the temperature sensor and the humidity sensor, respectively. The temperature and humidity controller is also electrically connected to the heat dissipation component.

[0014] The beneficial effects of this invention include the following: (1) The present invention compactly divides the inverter room and the energy storage room in a limited space to accommodate the off-grid inverter, management device and energy storage device respectively, solves the technical problem of stable and reliable power supply operation under different usage environments, optimizes the energy distribution scheme, meets the power demand of users, and has the advantages of high integration, intelligent energy storage power supply, small footprint and neat internal wiring, and is suitable for off-grid power generation occasions. (2) The energy storage device uses the first energy storage converter and the second energy storage converter to manage the charging and discharging of the energy storage device. By controlling the power output and providing overvoltage and overcurrent protection, it has strong resistance to impact loads and improves the stability and efficiency of the energy storage device. (3) The management device is equipped with the EMS module and the BMS module to realize energy scheduling of the energy storage device. The EMS module is used to complete the monitoring and management operation of the BMS module, monitor the load data, output power, and charging and discharging status of the energy storage device in real time, ensure the normal operation of the energy storage device, and realize the detection and analysis of energy consumption. The BMS module is used to monitor the status of the energy storage device in real time, collect the temperature, voltage, current, charge and other status information of the energy storage device, ensure the efficient and stable operation of the energy storage device, and optimize the standardization of the management of the energy storage device. (4) The DC filter and DC discharge interface, and the AC filter and AC discharge interface are configured in conjunction to provide DC discharge output and AC discharge output according to the user's needs; (5) The management device is further equipped with the first current transformer and the second current transformer to collect the input current data and output current data of the energy storage device in real time, thereby improving the overall monitoring and protection safety of the circuit. (6) The heat insulation plate is used to separate the inverter chamber and the energy storage chamber, which effectively prevents the heat inside the energy storage chamber from being transferred to the inverter chamber and affecting the normal operation of each device. The heat dissipation component is installed at the bottom of the energy storage chamber to ensure that the normal operating temperature range is maintained in the energy storage chamber, avoid the energy storage device from overheating, and save the space occupied by heat dissipation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a front view schematic diagram of the structure of the present invention; Figure 2 This is a rear view schematic diagram of the structure of the present invention. Detailed Implementation

[0017] The present invention will be further described below through specific embodiments, so as to make the technical solution of the present invention easier to understand and master, rather than to limit the present invention.

[0018] In this embodiment, unless otherwise specified, all methods used are conventional methods.

[0019] Example: See Figures 1 to 2 This embodiment provides an off-grid inverter energy storage device, which includes: The enclosure 1 includes an inverter chamber and an energy storage chamber arranged vertically. Energy storage device 2 is installed in the energy storage chamber and is used to store electrical energy and provide DC or AC power. An off-grid inverter, located in the inverter room, is used to invert direct current into alternating current and store it in the energy storage device 2; A management device, located in the inverter room, is used to perform energy scheduling for the energy storage device 2.

[0020] Specifically, the inverter room and energy storage room are compactly divided within a limited space to accommodate the off-grid inverter, management device and energy storage device 2, respectively. This solves the technical problem of stable and reliable power supply operation under different usage environments, optimizes the energy distribution scheme, meets the power demand of users, and has the advantages of high integration, intelligent energy storage power supply, small footprint and neat internal wiring. It is suitable for off-grid power generation.

[0021] Preferably, the energy storage device 2 includes several sets of battery frames stacked vertically, with several sets of battery stacks in each battery frame, and each battery stack including several sets of energy storage batteries 21 connected in parallel. The energy storage batteries 21 are electrically connected to the off-grid inverter and the management device, respectively. Specifically, the number of battery stacks and energy storage batteries 21 can be customized according to actual usage requirements to expand the battery capacity of the energy storage device 2.

[0022] Preferably, the management device includes an EMS module 41 and a BMS module 42 that are electrically connected. Both the EMS module 41 and the BMS module 42 are electrically connected to the energy storage device 2, and the EMS module 41 is electrically connected to the off-grid inverter.

[0023] Specifically, the EMS module 41 is used to monitor and manage the BMS module 42, and monitor the load data, output power, and charging and discharging status of the energy storage device 2 in real time to ensure the normal operation of the energy storage device 2 and realize the detection and analysis of energy consumption. The BMS module 42 is used to monitor the status of the energy storage device 2 in real time, and collect status information such as temperature, voltage, current, and charge of the energy storage device 2 to ensure the efficient and stable operation of the energy storage device 2 and optimize the standardization of the management of the energy storage device 2.

[0024] Preferably, the energy storage device 2 further includes a first energy storage converter 22 and a second energy storage converter 23, which are electrically connected to the positive and negative terminals of the energy storage device 2, respectively. Specifically, the first energy storage converter 22 and the second energy storage converter 23 help manage the charging and discharging of the energy storage device 2, and by controlling the power output and providing overvoltage and overcurrent protection, they have strong resistance to impact loads, thereby improving the stability and efficiency of the energy storage device 2.

[0025] Preferably, the off-grid inverter includes an off-grid inverter 31, a first circuit breaker 32, and a second circuit breaker 33. The off-grid inverter 31 is electrically connected to the BMS module 42. The first circuit breaker 32 is located on the connection circuit between the mains power grid and the first energy storage converter 22, and the second circuit breaker 33 is located on the connection circuit between the second energy storage converter 23 and the off-grid inverter 31. Specifically, the off-grid inverter 31 is used to convert DC power into AC power and output AC power to the power supply device.

[0026] Furthermore, the management device also includes several sets of DC discharge interfaces 43 and AC discharge interfaces 44, which are electrically connected to the BMS module 42. The DC discharge interfaces 43 and AC discharge interfaces 44 are used to provide DC discharge output and AC discharge output, respectively, to meet the different power needs of users.

[0027] Preferably, the off-grid inverter further includes a power filter 34, a DC filter 35, and an AC filter 36. The power filter 34 is connected to the mains power supply via a plug connector and is electrically connected to the first circuit breaker 32. The DC filter 35 is electrically connected to the DC discharge interface 43, and the AC filter 36 is electrically connected to the AC discharge interface 44. Specifically, the power filter 34, DC filter 35, and AC filter 36 are used to eliminate harmonics and improve current quality.

[0028] Specifically, the power filter 34 is used to connect to the mains power to filter the AC power, thereby charging the energy storage device 2; when the energy storage device 2 provides DC power, it is filtered by the DC filter 35 and then output through the DC discharge interface 43; when the energy storage device 2 provides AC power, the DC power is inverted into AC power by the off-grid inverter 31, and then filtered by the AC filter 36 before being output through the AC discharge interface 44.

[0029] Preferably, the management device further includes a first current transformer and a second current transformer, wherein the first current transformer is disposed on the connection circuit between the BMS module 42 and the DC discharge interface 43, and the second current transformer is disposed on the connection circuit between the BMS module 42 and the AC discharge interface 44.

[0030] Specifically, the first current transformer and the second current transformer collect the input current data and output current data of the energy storage device 2 in real time. When the input current data or output current data exceeds the preset value, the EMS module 41 controls the first circuit breaker 32 or the second circuit breaker 33 to cut off the circuit, thereby realizing comprehensive monitoring and protection of the circuit.

[0031] Preferably, the management device further includes a sampling mechanism 45, which is electrically connected to the second current transformer to detect the voltage of the DC discharge interface or the AC discharge interface.

[0032] Specifically, when the sampling mechanism detects that the voltage output through the second current transformer meets the preset range of DC voltage, DC power is output from the DC discharge interface; when the sampling mechanism detects that the voltage output through the second current transformer meets the preset range of AC voltage, AC power is output from the AC discharge interface.

[0033] Preferably, a temperature and humidity controller, a temperature sensor, and a humidity sensor are provided in the housing 1. The temperature and humidity controller is electrically connected to the EMS controller, and is electrically connected to the temperature sensor and the humidity sensor respectively. The temperature and humidity controller is also electrically connected to the heat dissipation component. Specifically, the temperature and humidity controller detects the temperature and humidity inside the enclosure 1 in real time through the temperature sensor and humidity sensor. When the detected internal temperature and / or humidity exceeds the preset value, the heat dissipation component performs heat dissipation and / or dehumidification operation.

[0034] Furthermore, a heat insulation board 5 is provided between the inverter chamber and the energy storage chamber; the heat insulation board 5 effectively prevents heat inside the energy storage chamber from being transferred to the inverter chamber, thus avoiding affecting the normal operation of each device; A heat dissipation component is provided at the bottom of the energy storage chamber, and the heat dissipation component is thermally connected to the energy storage device 2; the heat dissipation component is preferably, but not limited to, a cooling fan; The housing 1 is provided with several sets of heat dissipation holes to allow airflow to cool the heat dissipation components.

[0035] Specifically, the heat dissipation holes are open to allow external air to circulate into the interior of the housing 1, and under the action of the heat dissipation components, a continuous flow of gas is formed, thereby achieving air cooling of the energy storage chamber, ensuring that the energy storage chamber maintains a normal operating temperature range, preventing the energy storage device 2 from overheating, and saving space occupied by heat dissipation.

[0036] The off-grid inverter energy storage device of the present invention has the following advantages: (1) The present invention compactly divides the inverter room and the energy storage room in a limited space to accommodate the off-grid inverter, management device and energy storage device 2, solves the technical problem of stable and reliable power supply operation under different usage environments, optimizes the energy distribution scheme, meets the power demand of users, and has the advantages of high integration, intelligent energy storage power supply, small footprint and neat internal wiring, and is suitable for off-grid power generation occasions. (2) The energy storage device 2 uses the first energy storage converter 22 and the second energy storage converter 23 to manage the charging and discharging of the energy storage device 2. By controlling the power output and providing overvoltage and overcurrent protection, it has strong resistance to impact loads and improves the stability and efficiency of the energy storage device 2. (3) The management device is equipped with the EMS module 41 and the BMS module 42 to realize energy scheduling of the energy storage device 2. The EMS module 41 is used to monitor and manage the BMS module 42, monitor the load data, output power, and charging and discharging status of the energy storage device 2 in real time, ensure the normal operation of the energy storage device 2, and realize the detection and analysis of energy consumption. The BMS module 42 is used to monitor the status of the energy storage device 2 in real time, collect the temperature, voltage, current, charge and other status information of the energy storage device 2, ensure the efficient and stable operation of the energy storage device 2, and optimize the standardization of the management of the energy storage device 2. (4) The DC filter 35 and DC discharge interface 43, the AC filter 36 and AC discharge interface 44 are configured in conjunction to provide DC discharge output and AC discharge output according to user needs; (5) The management device is further equipped with the first current transformer and the second current transformer to collect the input current data and output current data of the energy storage device 2 in real time, thereby improving the overall monitoring and protection safety of the circuit. (6) The heat insulation plate 5 is used to separate the inverter chamber and the energy storage chamber, which effectively prevents the heat inside the energy storage chamber from being transferred to the inverter chamber and affecting the normal operation of each device. The heat dissipation component is installed at the bottom of the energy storage chamber to ensure that the energy storage chamber maintains a normal operating temperature range, avoids the energy storage device 2 from overheating, and saves space occupied by heat dissipation.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention, using the disclosed technical means and content. Therefore, all equivalent changes made based on the shape, structure, and principle of the present invention without departing from the scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. An off-grid inverter energy storage device, characterized in that, It includes: The enclosure includes an inverter compartment and an energy storage compartment arranged on the upper and lower levels; An energy storage device, located in the energy storage chamber, is used to store electrical energy and provide DC or AC power. An off-grid inverter, located in the inverter room, is used to invert direct current into alternating current and store it in the energy storage device; A management device, located in the inverter room, is used for energy scheduling of the energy storage device.

2. The off-grid inverter energy storage device according to claim 1, characterized in that, The energy storage device includes several sets of battery frames stacked vertically, and several sets of battery stacks are arranged in each battery frame. Each battery stack includes several sets of energy storage batteries arranged in parallel. The energy storage batteries are electrically connected to the off-grid inverter and the management device, respectively.

3. The off-grid inverter energy storage device according to claim 2, characterized in that, The management device includes an EMS module and a BMS module that are electrically connected. Both the EMS module and the BMS module are electrically connected to the energy storage device, and the EMS module is electrically connected to the off-grid inverter device.

4. The off-grid inverter energy storage device according to claim 3, characterized in that, The energy storage device further includes a first energy storage converter and a second energy storage converter, which are electrically connected to the positive and negative terminals of the energy storage device, respectively.

5. The off-grid inverter energy storage device according to claim 4, characterized in that, The off-grid inverter device includes an off-grid inverter, a first circuit breaker, and a second circuit breaker. The off-grid inverter is electrically connected to the BMS module. The first circuit breaker is located on the connection circuit between the mains power grid and the first energy storage converter. The second circuit breaker is located on the connection circuit between the second energy storage converter and the off-grid inverter.

6. The off-grid inverter energy storage device according to claim 5, characterized in that, The management device also includes several sets of DC discharge interfaces and AC discharge interfaces, all of which are electrically connected to the BMS module.

7. The off-grid inverter energy storage device according to claim 6, characterized in that, The off-grid inverter also includes a power filter, a DC filter, and an AC filter. The power filter is connected to the mains power via a plug connector and is electrically connected to the first circuit breaker. The DC filter is electrically connected to the DC discharge interface, and the AC filter is electrically connected to the AC discharge interface.

8. The off-grid inverter energy storage device according to claim 7, characterized in that, The management device further includes a first current transformer and a second current transformer. The first current transformer is disposed on the connection circuit between the BMS module and the DC discharge interface, and the second current transformer is disposed on the connection circuit between the BMS module and the AC discharge interface.

9. The off-grid inverter energy storage device according to claim 8, characterized in that, The management device further includes a sampling mechanism electrically connected to the second current transformer to detect the voltage of the DC discharge interface or the AC discharge interface.

10. The off-grid inverter energy storage device according to claim 9, characterized in that, The enclosure is equipped with a temperature and humidity controller, a temperature sensor, and a humidity sensor. The temperature and humidity controller is electrically connected to the EMS controller, and is also electrically connected to the temperature sensor and the humidity sensor, respectively. Furthermore, the temperature and humidity controller is electrically connected to the heat dissipation assembly.

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