Energy storage all-in-one machine

Abstract

The utility model relates to an energy storage all-in-one machine which comprises a cabinet body, and a plurality of batteries PACK are stored in a battery cabin. The spraying system comprises a medium tank, a plurality of medium pipes and a plurality of electromagnetic valves, one end of each medium pipe is connected with the medium tank, and the other end of each medium pipe is communicated with an inner cavity of the battery PACK; the battery PACK comprises a plurality of battery cells, a plurality of temperature sensors and a three-stage BMS (Battery Management System), and the surface of each battery cell is provided with a temperature sensor; a second-stage BMS is arranged in the high-voltage box, and the second-stage BMS is connected with the third-stage BMS in each battery PACK; the second-stage BMS is connected with the first-stage BMS, and the first-stage BMS is connected with the electromagnetic valve. A temperature measuring point is arranged on the surface of each battery cell, whether the temperature of each battery cell is abnormal or not can be monitored by monitoring the temperature measuring points in real time, and an alarm is given, fire protection is started and a power supply is cut off before the battery cells enter detonation of diaphragm dissolution.

Description

Technical Field

[0001] The utility model relates to the field of energy storage equipment, and in particular to an integrated energy storage device. Background Art

[0002] With the development of new energy, the energy storage industry has flourished, and various energy storage products have emerged. Among them, industrial and commercial energy storage generally uses small integrated energy storage devices, which are connected in parallel to boost the voltage and connect to the power grid to achieve peak-valley arbitrage, backup power supply and other functions.

[0003] The existing energy storage integrated machine on the market uses aerosol built-in battery PACK, which has achieved the purpose of battery PACK fire protection. By building in a fire detection point on the battery PACK panel, when the panel temperature is detected to be higher than the safety threshold, the built-in aerosol fire protection is activated to achieve the fire extinguishing function. However, there are several fatal flaws. First, the characteristics of aerosol mean that it can only extinguish fires and cannot absorb heat. The characteristics of batteries are actually similar to explosives. When its diaphragm dissolves, it will continue to deflagrate extremely quickly, and the temperature will rise sharply. At this time, using aerosol to extinguish fire can only prevent the generation of open flames, and the battery will still reignite. At the same time, the fire detection on the market uses a detector built into the battery PACK panel to monitor dangerous situations. Often when it discovers a dangerous situation, the battery cells in the battery PACK have entered the deflagration stage of diaphragm dissolution, or even multiple battery cells have already deflagrated, which is less timely for fire control.

[0004] Secondly, existing integrated energy storage devices will be installed with multiple components, some of which require operation, visual inspection, and detection, while some components are relatively large and do not require maintenance. These components are basically not disassembled after being installed in the cabinet. For these components on the cabinet, they were previously installed in the electrical compartment, causing the electrical compartment to be filled with components. When the operator needs to operate or replace and maintain the components that require operation, visual inspection, and detection, it will be very troublesome. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide an integrated energy storage machine, and to solve the technical problem that the current integrated energy storage machine has poor timeliness in fire control.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is an energy storage integrated machine, comprising:

[0008] A cabinet body, wherein a battery compartment and an electrical compartment are provided in the cabinet body, and a plurality of battery PACKs are stored in the battery compartment;

[0009] A spray system, comprising a medium tank, a plurality of medium pipes and a plurality of solenoid valves, wherein the solenoid valves are arranged on the medium pipes; the number of the medium pipes corresponds to the number of the battery packs, one end of each medium pipe is connected to the medium tank, and the other end is connected to the inner cavity of the battery pack;

[0010] The battery PACK includes a plurality of battery cells, a plurality of temperature sensors and a three-stage BMS. A temperature sensor is arranged on the surface of each battery cell. The three-stage BMS is respectively connected to each temperature sensor and is suitable for monitoring the working parameters of each battery cell.

[0011] A high-voltage box, in which a circuit breaker, a contactor and a secondary BMS are arranged, and the secondary BMS is connected to the tertiary BMS in each battery PACK. The high-voltage box is suitable for connecting each battery PACK in series and controlling the power on and off of each battery PACK;

[0012] The secondary BMS is connected to the primary BMS, and the primary BMS is connected to a solenoid valve.

[0013] Furthermore, the firefighting medium used in the medium tank is perfluorohexanone.

[0014] Furthermore, a partition is provided in the electrical compartment, and the partition separates the electrical compartment into an electrical front compartment and an electrical rear compartment;

[0015] The partition is connected to the cabinet body by a hinge so that the partition can rotate in the electrical front compartment;

[0016] The partition is provided with mounting grooves for mounting components.

[0017] Furthermore, the partition plate and the cabinet body are connected by plugging.

[0018] Furthermore, the height of the electrical compartment on the cabinet is 1.5m.

[0019] Furthermore, the medium tank is installed in the electrical rear compartment.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides an integrated energy storage machine, wherein temperature measuring points are arranged on the surface of each battery cell. Through real-time monitoring of the temperature measuring points, it is possible to monitor whether the temperature of each battery cell is abnormal. Before the battery cell enters the diaphragm and dissolves and explodes, an alarm is sounded, fire fighting is started, the circuit is cut off, and a fire fighting medium is directly sprayed on a single battery PACK through a spray system to prevent a chain reaction caused by the explosion of a single battery cell, thereby reducing losses and effectively controlling dangerous situations.

[0022] By installing partitions in the electrical compartment, all components that need to be controlled, visualized, and monitored can be installed on the front of the partition. Since the partition is close to the front of the product and the height is controlled at 1.5 meters, the problem of inconvenience in operation and maintenance for personnel due to the high electrical part of the all-in-one machine and a depth greater than 1 meter is solved. At the same time, large electrical components and fire protection parts that do not require daily maintenance are installed behind the partition, which realizes front maintenance of the entire cabinet and greatly increases the installation utilization space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the energy storage integrated machine of the utility model;

[0025] Figure 2 It is a schematic diagram of the energy storage integrated machine (without partition) of the utility model;

[0026] Figure 3 This is a half-section diagram of the energy storage integrated machine of the utility model;

[0027] Figure 4 It is a schematic diagram of the partition;

[0028] Figure 5 This is the communication principle diagram of the energy storage integrated machine

[0029] Among them, 1. cabinet, 2. electrical compartment, 21. electrical front compartment, 22. electrical rear compartment, 3. partition, 31. hinge, 4. medium tank, 5. battery PACK. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The present application provides an integrated energy storage device, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0032] In order to solve the technical problem that the timeliness of fire control by the integrated energy storage device in the prior art is poor, an embodiment of the present application provides an integrated energy storage device, which is described in detail below.

[0033] like Figures 1 to 5 As shown, an energy storage integrated machine includes

[0034] A cabinet 1, wherein a battery compartment and an electrical compartment 2 are provided in the cabinet 1, and a plurality of battery PACKs 5 are stored in the battery compartment;

[0035] The spray system includes a medium tank 4, a plurality of medium pipes and a plurality of solenoid valves, wherein the solenoid valves are arranged on the medium pipes; the number of the medium pipes corresponds to the number of the battery PACK5, one end of each medium pipe is connected to the medium tank 4, and the other end is connected to the inner cavity of the battery PACK5;

[0036] The battery PACK5 includes a plurality of battery cells, a plurality of temperature sensors and a three-stage BMS. A temperature sensor is arranged on the surface of each battery cell. The three-stage BMS is respectively connected to each temperature sensor and is suitable for monitoring the working parameters of each battery cell.

[0037] The three-level BMS can specifically monitor the voltage, current, temperature and other information of the battery cell. In the present embodiment, since a temperature sensor is installed on each battery cell, the specific temperature of each battery cell can be monitored by the three-level BMS.

[0038] A high-voltage box, in which a circuit breaker, a contactor and a secondary BMS are arranged, and the secondary BMS is connected to the tertiary BMS in each battery PACK5. The high-voltage box is suitable for connecting each battery PACK5 in series and controlling the power on and off of each battery PACK5;

[0039] Each battery PACK5 is electrically connected to the circuit breaker, fuse and contactor in the high-voltage box. Therefore, the high-voltage box can control the connection and disconnection of each battery PACK5 with the outside. The high-voltage box is connected to the external PCS (energy storage inverter), and the PCS (energy storage inverter) is connected to the power grid.

[0040] The secondary BMS is connected to the primary BMS, and the primary BMS is connected to a solenoid valve.

[0041] The medium tank 4 can contain 9 kg of perfluorohexanone.

[0042] Specifically, as an optional implementation in this embodiment, the firefighting medium used in the medium tank 4 is perfluorohexanone.

[0043] Specifically, as an optional implementation in this embodiment, Figures 2 to 4 As shown, a partition 3 is provided in the electrical compartment 2, and the partition 3 divides the electrical compartment 2 into an electrical front compartment 21 and an electrical rear compartment 22;

[0044] The partition plate 3 is connected to the cabinet body 1 by a hinge 31, so that the partition plate 3 can rotate in the electrical front compartment 21;

[0045] The partition plate 3 is provided with mounting grooves for mounting components.

[0046] The mounting slots can also be replaced by mounting rails.

[0047] In this embodiment, large components that do not need to be frequently disassembled and assembled are installed in the electrical rear compartment 22, such as the gateway machine and UPS (uninterruptible power supply) of the cabinet 1 are installed in the electrical rear compartment 22, and the medium tank 4 is also fixed in the electrical rear compartment 22.

[0048] All components that need to be controlled, visually inspected, and monitored are installed on the partition 3, such as air switches, IO modules, electric energy meters, time relays, sockets, temperature relays, and various terminals. When it is necessary to disassemble or assemble these components on the partition 3, the partition 3 can be rotated to the electrical front compartment 21 through the hinge 31, which is convenient for personnel to operate.

[0049] After the components are installed on the partition 3, they are transferred back to the electrical front cabin 21, and a cabinet door is provided at the front end of the cabinet body 1, which is finally closed.

[0050] Specifically, as an optional implementation in this embodiment, the partition board 3 and the cabinet body 1 are connected by plugging.

[0051] In this embodiment, the latch is a roller type latch.

[0052] In this embodiment, the height of the electrical compartment 2 on the cabinet 1 is 1.5 m, which is convenient for operators to disassemble and maintain the components of the electrical compartment 2.

[0053] The electric energy required for the operation of the sprinkler system is provided by the backup power supply configured in the energy storage device.

[0054] like Figure 5 As shown, the communication principle block diagram of the energy storage integrated machine, five three-level BMSs correspond to five battery PACK5, a two-level BMS is set in the high-voltage box, and an energy storage cabinet is equipped with a first-level BMS. The first-level BMS is used to control the operation of the components in the entire energy storage cabinet, and the first-level BMS is connected to the energy storage machine EMS system.

[0055] Working principle of the utility model energy storage integrated machine:

[0056] A temperature sensor is arranged on the surface of each battery cell. Through real-time monitoring of the battery cell temperature measurement points, the temperature of the battery cell is abnormal, and before the explosion that causes the membrane to dissolve, the output can be transmitted from the third-level BMS to the second-level BMS, and the second-level BMS transmits the output to the first-level BMS, and the first-level BMS issues a first-level warning; when the temperature continues to rise, a second-level warning is issued to start the firefighting, cut off the circuit, and the first-level BMS controls the solenoid valve to open and spray the corresponding battery PACK5. This prevents the chain reaction caused by the explosion of a single battery cell due to the failure to detect the battery cell status in time (the surrounding batteries are ignited), reduces losses, and effectively controls the dangerous situation.

[0057] At the same time, the fire-fighting medium of perfluorohexanone can effectively absorb the heat generated by the dissolution of the battery diaphragm. This product is equipped with a 9KG perfluorohexanone tank. When the solenoid valve receives the first-level BMS fire-fighting command, the solenoid valve on the medium pipe corresponding to the battery PACK5 is started, and the perfluorohexanone in the medium tank 4 enters the battery PACK5, and the target position is started to be irrigated with perfluorohexanone for fire-fighting. It is sprayed three times, 3KG each time, which effectively and continuously suppresses the heat release of the battery. According to calculations, 9KG of perfluorohexanone can completely absorb all the heat generated by a single fully charged battery cell, realize the fire extinguishing function, absorb battery energy, and control the loss to the minimum range. Subsequent maintenance only needs to replace the problematic battery cell.

[0058] In addition to controlling the solenoid valve to extinguish the fire of battery PACK5, the first-level BMS can also control the circuit breaker in the high-voltage box to cut off the power to each battery PACK5.

[0059] The fire-fighting medium can be any medium that can extinguish fire and absorb heat, and the dosage can also be adjusted according to the energy of the battery cell.

[0060] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0061] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0063] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0064] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0065] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0066] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An integrated energy storage device, characterized in that: include A cabinet (1), wherein a battery compartment and an electrical compartment (2) are provided in the cabinet (1), and a plurality of battery PACKs (5) are stored in the battery compartment; A spray system, comprising a medium tank (4), a plurality of medium pipes and a plurality of solenoid valves, wherein the solenoid valves are arranged on the medium pipes; the number of the medium pipes corresponds to the number of battery packs (5), one end of each medium pipe is connected to the medium tank (4), and the other end is communicated with the inner cavity of the battery pack (5); The battery PACK (5) comprises a plurality of battery cells, a plurality of temperature sensors and a three-stage BMS, wherein a temperature sensor is arranged on the surface of each battery cell, and the three-stage BMS is respectively connected to each temperature sensor and is suitable for monitoring the working parameters of each battery cell; A high-voltage box, in which a circuit breaker, a contactor and a secondary BMS are arranged, and the secondary BMS is connected to the tertiary BMS in each battery PACK (5), and the high-voltage box is suitable for connecting each battery PACK (5) in series and controlling the power on and off of each battery PACK (5); The secondary BMS is connected to the primary BMS, and the primary BMS is connected to a solenoid valve.

2. The energy storage integrated machine according to claim 1, characterized in that: The firefighting medium used in the medium tank (4) is perfluorohexanone.

3. The energy storage integrated machine according to claim 1, characterized in that: A partition (3) is arranged in the electrical compartment (2), and the partition (3) divides the electrical compartment (2) into an electrical front compartment (21) and an electrical rear compartment (22); The partition plate (3) is connected to the cabinet (1) by a hinge (31) so that the partition plate (3) can rotate in the electrical front compartment (21); The partition plate (3) is provided with mounting grooves for mounting components.

4. The energy storage integrated machine according to claim 3 is characterized in that: The partition plate (3) and the cabinet body (1) are connected by plugging.

5. The energy storage integrated machine according to claim 1, characterized in that: The height of the electrical compartment (2) on the cabinet (1) is 1.5 m.

6. The energy storage integrated machine according to claim 3, characterized in that: The medium tank (4) is installed in the electrical rear compartment (22).

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