Mobile energy storage vehicle and control system thereof

Abstract

This application belongs to the field of energy storage vehicle technology, and particularly relates to a mobile energy storage vehicle and its control system, including an energy storage cabinet; inside the energy storage cabinet, along its length, are a PACK compartment, a PCS compartment, and an operation compartment; wherein, the PACK compartment is divided into upper and lower layers by a partition, the lower layer housing battery packs, and the lower layer housing a horizontal liquid cooler for thermal regulation of the battery packs; a high-voltage box and an energy storage converter are arranged in the PCS compartment; a combiner cabinet is arranged in the operation compartment; every two or more battery packs constitute a battery cluster unit; each battery cluster unit corresponds to one horizontal liquid cooler for thermal regulation, and corresponds to one high-voltage box and one energy storage converter for current and voltage conversion. This application aims to solve the problem that current mobile energy storage vehicles using liquid coolers for heat dissipation cannot further increase energy storage capacity or further reduce container size.

Description

Technical Field

[0001] This application belongs to the field of energy storage vehicle technology, and in particular relates to a mobile energy storage vehicle and its control system. Background Technology

[0002] Mobile energy storage vehicles integrate three core functions: large-capacity energy storage, intelligent charging, and efficient energy replenishment. They can quickly provide users with efficient charging and energy replenishment services and are mainly used for emergency power replenishment in scenarios such as residential areas, parking lots, ports and docks, airports, railway stations, mining areas, oil fields, temporary power supply, and emergencies.

[0003] The energy storage modules inside the mobile energy storage vehicle generate a lot of heat during charging and discharging. In order to meet the charging and discharging requirements of the mobile energy storage vehicle, a liquid cooler needs to be added inside the mobile energy storage vehicle for heat dissipation.

[0004] Currently, most liquid chillers are independent vertical cabinet structures, which occupy a certain amount of space. Based on this, a container of the same volume cannot accommodate more battery packs to increase energy storage capacity. Similarly, a container of the same volume cannot be further reduced in size. Utility Model Content

[0005] This application aims to address the problem that current mobile energy storage vehicles using liquid-cooled cooling systems cannot further increase their energy storage capacity or further reduce the size of their containers.

[0006] To address the aforementioned technical problems, this application provides a mobile energy storage vehicle, including an energy storage cabinet; inside the energy storage cabinet, along its length, are sequentially a PACK compartment, a PCS compartment, and an operation compartment; wherein, The PACK compartment is divided into an upper and a lower layer by a partition. The lower layer houses the battery pack and a horizontal liquid cooler that performs thermal regulation for the battery pack. A high-voltage box and an energy storage converter are installed inside the PCS compartment. A junction box is installed inside the operating cabin; The battery pack includes multiple stacked and connected in series battery packs; several battery packs are placed in the PACK compartment from both sides of the energy storage cabinet; each pair or more battery packs constitute a battery cluster unit. Each of the battery cluster units corresponds to a horizontal liquid cooler for thermal energy regulation, and corresponds to a high-voltage box and an energy storage converter for current and voltage conversion.

[0007] Preferably, a battery pack bracket is provided inside the PACK compartment; the battery pack bracket includes a column and several support bars arranged along the length of the column; the battery PACK is placed on the support bars to complete the assembly.

[0008] Preferably, a cushioning pad is provided on the upper side of the support bar or on both the upper and lower sides of the support bar.

[0009] Preferably, cabinet doors are provided on both sides of the PACK compartment and the PCS compartment, and at the end of the operating compartment; a heat dissipation window is provided on the cabinet door of the PACK compartment at a position corresponding to the horizontal liquid chiller; a heat dissipation window is provided on the cabinet door of the PCS compartment.

[0010] Preferably, the door locks of the cabinet doors all adopt a recessed mounting surface design.

[0011] Based on the aforementioned mobile energy storage vehicle, this application also provides a mobile energy storage vehicle control system, which further includes a DC power line, an AC power line, a load terminal composed of the combiner cabinet, and a control terminal composed of an EMU and an EMS. The input terminals of the battery cluster unit, high-voltage box, and energy storage converter are connected sequentially through the DC power line to complete the conversion of current and voltage in the battery cluster unit; The output terminal of the energy storage converter is connected to the load terminal through the AC power line, so that the converted electrical energy output by the energy storage converter is output to the load to complete the power supply. The control terminal is connected to the BCU of the high-voltage box, the energy storage converter, and the liquid cooler, respectively. The BCU of the high-voltage box is connected to the BMS of the battery cluster unit, which detects the status information of the battery cluster unit, the high-voltage box, the energy storage converter, and the liquid cooler, and controls the battery cluster unit, the high-voltage box, the energy storage converter, and the liquid cooler according to the detected working status to maintain the normal operation of the system and output stable power to the load.

[0012] Preferably, it also includes fire-fighting sensors, temperature sensors, humidity sensors, electricity meters, temperature transmitters, and displays, which are respectively connected to the control terminal.

[0013] Preferably, it also includes a charging module connected to the AC power cord.

[0014] The beneficial effects of adopting the above structure are as follows: This application uses a horizontal liquid cooler, which greatly reduces the space occupied by the liquid cooler and reserves more space for battery packs. More battery packs can be installed in the same volume of energy storage cabinet to increase the energy storage capacity, or the size of the energy storage cabinet can be further reduced for the same volume of battery packs. At the same time, this application adopts cluster management for battery packs, with each battery cluster unit corresponding to a horizontal liquid cooler to complete thermal energy regulation, reducing the number of horizontal liquid coolers, further reducing the space occupied by the liquid coolers, and improving the space utilization rate of the energy storage cabinet. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the mobile energy storage vehicle according to an embodiment of this application; Figure 2 This is a schematic diagram of the energy storage cabinet structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the battery pack bracket structure according to an embodiment of this application; Figure 4 This is a block diagram of the power circuit connection in an embodiment of this application; Figure 5 This is a block diagram of the control circuit connection in an embodiment of this application. Detailed Implementation

[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0017] Currently, most liquid chillers are independent vertical cabinet structures, which occupy a certain amount of space. Based on this, a container of the same volume cannot accommodate more battery packs to increase energy storage capacity. Similarly, a container of the same volume cannot be further reduced in size.

[0018] Please see Figures 1 to 2 To address the aforementioned technical issues, this embodiment proposes a mobile energy storage vehicle, including an energy storage cabinet. In this embodiment, the energy storage cabinet adopts a container type, and inside the energy storage cabinet, along its length, are a PACK compartment 10, a PCS compartment 20, and an operation compartment 30.

[0019] The PACK compartment 10 is divided into an upper and a lower layer by a partition. The lower layer houses the battery pack 11 and a horizontal liquid cooler 12 that performs thermal regulation for the battery pack 11.

[0020] Specifically, the battery pack 11 comprises multiple stacked and series-connected battery packs. The battery packs 11 are placed in the PACK compartment 10 from both sides of the energy storage cabinet, i.e., arranged back-to-back. One set of battery packs 11 is placed from one side of the energy storage cabinet into the PACK compartment 10, and another set from the other side, ensuring a back-to-back arrangement. Only a small air gap or no gap is left between the two sets of battery packs. After assembly, the battery packs 11 are arranged sequentially along the length of the PACK compartment 10 until it is completely filled, maximizing the space within the PACK compartment 10 and increasing the number of battery packs 11 as much as possible. For assembly and maintenance, cabinet doors are provided on both sides of the PACK compartment 10, allowing for easy access to assembly and maintenance.

[0021] Alternatively, in this embodiment, every two or more battery packs 11 constitute a battery cluster unit. If two battery packs 11 form a battery cluster unit, the two packs can be two back-to-back battery packs 11 assembled along the width direction of the PACK compartment 10, or two adjacent battery packs 11 assembled along the length direction of the PACK compartment 10. If four battery packs 11 form a battery cluster unit, the four packs can be two pairs of back-to-back battery packs 11, or four adjacent battery packs 11 assembled along the length direction of the PACK compartment 10. In other words, using the principle of proximity as the composition principle for battery cluster units, and assembling battery cluster units in close proximity, can reduce the overall design difficulty, control difficulty, and manufacturing cost of battery pack 11 control and thermal energy regulation.

[0022] Regarding the thermal energy regulation of the battery pack 11, in this embodiment, each battery cluster unit corresponds to a horizontal liquid cooler 12 to complete the thermal energy regulation. The horizontal liquid cooler 12 is connected to the battery pack 11 through valves and liquid cooling pipes to complete the thermal energy regulation of all battery packs in the battery cluster unit. Moreover, the thermal energy regulation of each battery cluster unit is controlled independently and does not affect each other. The thermal energy regulation of the battery packs in the entire PACK compartment 10 is broken down into smaller parts, while retaining cluster management.

[0023] In this embodiment, a frame-type assembly is adopted for the assembly structure of the battery PACK and the horizontal liquid cooler 12.

[0024] Please see Figure 3Specifically, a battery pack bracket 13 is installed inside the PACK compartment 10. The battery pack bracket 13 includes a column 131 and several support bars 132 arranged along the length of the column 131. The column 131 provides longitudinal support for the entire battery pack bracket 13 and the battery pack, ensuring the entire battery pack bracket 13 is securely placed within the PACK compartment 10 and allowing the battery packs to be stacked longitudinally. The column 131 is fixed to the PACK compartment 10 with bolts. The distance between two adjacent columns 131 can be adjusted according to the size of the battery pack to be assembled. The support bars 132 are arranged along the length of the column 131, and the distance between two adjacent support bars 132 is the thickness of the battery pack.

[0025] During battery pack assembly, the battery pack is inserted along and placed on the support bars 132. Two support bars 132 support the battery pack on its lower sides, while the two upper support bars 132 abut against its upper sides, thus clamping the battery pack between the four support bars 132. To prevent the battery pack from falling off during the movement of the energy storage vehicle, screws can be used to fix the battery pack to the support bars 132. Limiting blocks can also be installed at the front and rear ends of the support bars 132.

[0026] It's acceptable; cushioning pads are provided on the upper side of the support bar 132, or on both the upper and lower sides of the support bar 132. These cushioning pads prevent damage to the battery pack from impacts.

[0027] Similarly, in the assembly structure of the horizontal liquid cooler 12, this embodiment can also adopt a frame-type assembly. Its assembly structure is the same as that of the battery PACK, and will not be described in detail here. In terms of heat dissipation of the horizontal liquid cooler 12, this embodiment has cabinet doors on both sides of the PACK compartment 10, and heat dissipation windows are opened on the cabinet doors at positions corresponding to the horizontal liquid cooler 12. The heat generated by the horizontal liquid cooler 12 during operation is diffused to the outside of the PACK compartment 10 through the heat dissipation windows.

[0028] In terms of power control of the battery pack, this embodiment uses a high-voltage box 21 and an energy storage converter 22 to complete the power configuration. Specifically, each battery cluster unit and its corresponding high-voltage box 21 and energy storage converter 22 complete the current and voltage conversion. For this purpose, this embodiment has a high-voltage box 21 and an energy storage converter 22 installed in the PCS compartment 20.

[0029] In order to dissipate heat from the high-voltage box 21 and the energy storage converter 22, this embodiment has cabinet doors on both sides of the PCS compartment 20, and heat dissipation windows are provided on the cabinet doors. The heat generated by the high-voltage box 21 and the energy storage converter 22 during operation is diffused to the outside of the PCS compartment 20 through the heat dissipation windows.

[0030] In terms of power output, this embodiment includes a combiner cabinet 31 within the control compartment 30. After the energy storage converter 22 completes the current and voltage conversion, electrical energy is supplied externally from the combiner cabinet 31. Cabinet doors are provided at the ends of the control compartment 30 for convenient power supply operation. Fire extinguishers and other fire-fighting equipment, as well as vehicle routine maintenance tools, can also be installed within the control compartment 30. An operating panel can also be installed at the cabinet door of the control compartment 30.

[0031] In this embodiment, the cabinet doors all feature recessed mounting surfaces for their locks to prevent them from being exposed.

[0032] Please see Figures 4 to 5 Based on the aforementioned mobile energy storage vehicle, this embodiment also provides a mobile energy storage vehicle control system, which further includes a DC power line 41, an AC power line 42, a load terminal 43 composed of a combiner cabinet 31, and a control terminal 44 composed of an EMU and an EMS.

[0033] The input terminals of the battery cluster unit, the high-voltage box 21, and the energy storage converter 22 are connected in sequence through the DC power line 41 to complete the conversion of current and voltage in the battery cluster unit.

[0034] The output terminal of the energy storage converter 22 is connected to the load terminal 43 through the AC power line 42, so that the converted electrical energy output by the energy storage converter 22 is output to the load to complete the power supply.

[0035] The control terminal 44 is connected to the BCU of the high-voltage box 21, the energy storage converter 22, and the horizontal liquid cooler 12, respectively. The BCU of the high-voltage box 21 is connected to the BMS of the battery cluster unit, which detects the status information of the battery cluster unit, the high-voltage box 21, the energy storage converter 22, and the horizontal liquid cooler 12, and controls the battery cluster unit, the high-voltage box 21, the energy storage converter 22, and the horizontal liquid cooler 12 according to the detected working status, so as to maintain the normal operation of the system and output stable power to the load terminal 43.

[0036] It also includes a fire sensor 45, a temperature sensor 46, a humidity sensor 47, an electricity meter 48, a temperature transmitter 49, and a display screen 50, all of which are connected to the control terminal 44.

[0037] It also includes a charging module 51 that is connected to the AC power cord 42.

[0038] This embodiment uses a horizontal liquid cooler, which greatly reduces the space occupied by the liquid cooler and reserves more space for the battery pack. More battery packs can be installed in the same volume of energy storage cabinet to increase the energy storage capacity, or the size of the energy storage cabinet can be further reduced for the same volume of battery packs. At the same time, this application adopts cluster management for the battery packs, with each battery cluster unit corresponding to a horizontal liquid cooler to complete thermal energy regulation, reducing the number of horizontal liquid coolers, further reducing the space occupied by the liquid coolers, and improving the space utilization rate of the energy storage cabinet.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

[0040] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The present application and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present application. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the spirit of the present application, such design should fall within the protection scope of the present application.

Claims

1. A mobile energy storage vehicle, characterized by: It includes an energy storage cabinet; inside the energy storage cabinet, along its length, are sequentially a PACK compartment, a PCS compartment, and an operations compartment; wherein, The PACK compartment is divided into an upper and a lower layer by a partition. The lower layer houses the battery pack and a horizontal liquid cooler that performs thermal regulation for the battery pack. A high-voltage box and an energy storage converter are installed inside the PCS compartment. A junction box is installed inside the operating cabin; The battery pack includes multiple stacked and connected in series battery packs; several battery packs are placed in the PACK compartment from both sides of the energy storage cabinet; each pair or more battery packs constitute a battery cluster unit. Each of the battery cluster units corresponds to a horizontal liquid cooler for thermal energy regulation, and corresponds to a high-voltage box and an energy storage converter for current and voltage conversion.

2. The mobile energy storage vehicle of claim 1, wherein: A battery pack bracket is provided inside the PACK compartment; the battery pack bracket includes a column and several support bars arranged along the length of the column; the battery PACK is placed on the support bars to complete the assembly.

3. The mobile energy storage vehicle according to claim 2, characterized in that: A cushioning pad is provided on the upper side of the support bar, or on both the upper and lower sides of the support bar.

4. The mobile energy storage vehicle according to claim 1, characterized in that: Cabinet doors are provided on both sides of the PACK compartment and the PCS compartment, and at the end of the operating compartment; a heat dissipation window is provided on the cabinet door of the PACK compartment at a position corresponding to the horizontal liquid chiller; a heat dissipation window is provided on the cabinet door of the PCS compartment.

5. The mobile energy storage vehicle according to claim 4, characterized in that: The door locks of all cabinet doors adopt a recessed mounting surface design.

6. A mobile energy storage vehicle control system, characterized in that: The mobile energy storage vehicle applied to any one of claims 1-5; further includes a DC power line, an AC power line, a load terminal formed by the combiner cabinet, and a control terminal composed of an EMU and an EMS; The input terminals of the battery cluster unit, high-voltage box, and energy storage converter are connected sequentially through the DC power line to complete the conversion of current and voltage in the battery cluster unit. The output terminal of the energy storage converter is connected to the load terminal through the AC power line, so that the converted electrical energy output by the energy storage converter is output to the load to complete the power supply. The control terminal is connected to the BCU of the high-voltage box, the energy storage converter, and the liquid cooler, respectively. The BCU of the high-voltage box is connected to the BMS of the battery cluster unit, which detects the status information of the battery cluster unit, the high-voltage box, the energy storage converter, and the liquid cooler, and controls the battery cluster unit, the high-voltage box, the energy storage converter, and the liquid cooler according to the detected working status to maintain the normal operation of the system and output stable power to the load.

7. The mobile energy storage vehicle control system according to claim 6, characterized in that: It also includes fire sensors, temperature sensors, humidity sensors, electricity meters, temperature transmitters, and displays that are respectively connected to the control terminal.

8. The mobile energy storage vehicle control system according to claim 6, characterized in that: It also includes a charging module that is connected to the AC power cord.

Images