A modular energy storage battery temperature control cabinet

Abstract

The present invention discloses a modular energy storage battery temperature control cabinet, which relates to the field of battery temperature control technology, and aims to solve the problems of unreasonable structure and low temperature control efficiency of temperature control cabinets in the prior art. The device includes: an insulation box, an inner box, a plurality of movable trays and a door body. The inner box and the movable tray are arranged inside the insulation box, and a tray positioning column is installed on the side wall of the inner box; the positioning holes on the tray positioning column cooperate with the fixed feet on the movable tray to place the movable tray. At the same time, the insulation box, the inner box, the door body and any one of the movable trays together form a closed storage space. The volume of the closed storage space is changed by the parallel movement of the movable tray on the positioning hole, and at least one air supply fan and one air return fan are provided in each closed storage space. The modular energy storage battery temperature control cabinet provided by the present invention has a more reasonable structure, and utilizes the closed storage space for separate temperature control, thereby improving the temperature control efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery temperature control, and in particular to a modular energy storage battery temperature control cabinet. Background Art

[0002] Energy storage batteries are widely used in communications, transportation, industry, medical care and other scenarios. Temperature control management of energy storage batteries is a key link to ensure battery safety and extend battery service life.

[0003] Existing temperature-controlled cabinets for energy storage batteries can be designed with ventilation holes at the front and rear of the cabinet, using fans for heat dissipation and temperature control. Alternatively, the cabinet can be enclosed and temperature controlled with a wall-mounted or ceiling-mounted air conditioner. However, the ventilation holes can clog the cabinet with dust and debris during use, reducing heat dissipation efficiency. Furthermore, industrial air conditioners are typically compact, all-in-one units with illogical structures, which severely limits the size of the heat exchanger and reduces heat dissipation efficiency. Furthermore, the evaporator and condenser rely solely on foam insulation, resulting in significant cooling leakage and significant energy consumption during operation.

[0004] Therefore, designing a temperature control cabinet for energy storage batteries with reasonable structure and high heat dissipation efficiency has become an urgent problem to be solved. Summary of the Invention

[0005] The object of the present invention is to provide a modular energy storage battery temperature control cabinet to solve the problems of unreasonable structure and low temperature control efficiency of temperature control cabinets in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A modular energy storage battery temperature control cabinet, comprising:

[0008] An insulation box, an inner box, a plurality of movable trays and a door; the insulation box is provided with an inner box and a movable tray inside; the surface of the inner box has an air supply port and an air return port, the air supply port is provided with an air supply fan, and the air return port is provided with a return fan; at least one tray positioning post is provided on at least one inner wall of the front, left and right sides of the inner box;

[0009] There are multiple positioning holes at different heights on each of the pallet positioning columns, the movable pallet is a quadrilateral, and each of the movable pallets has at least one fixed foot, and each of the fixed feet is embedded in each corresponding positioning hole; each movable pallet moves parallel to the positioning holes at different heights; the insulation box body, inner box body, door body and any movable pallet together surround a closed storage space, and each of the closed storage spaces is provided with at least one supply air fan and one return air fan.

[0010] Optionally, the temperature control cabinet further includes a condensing device and an evaporating device, wherein the condensing device is installed in an independent space inside the thermal insulation box or outside the thermal insulation box, and the evaporating device is installed in a cavity between the thermal insulation box and the inner box;

[0011] The condensing device is connected to the evaporating device through an infusion tube, and a safe distance is maintained between the condensing device and the evaporating device; the condensing device includes a condensing device and a variable frequency compressor; the condensing device is used to condense the gas in the infusion tube into liquid; the evaporating device is used to evaporate the liquid in the infusion tube into gas.

[0012] Optionally, the evaporation device includes:

[0013] The two ends of the evaporation device are respectively connected to the air supply fan and the air return fan.

[0014] The evaporation device includes a plurality of heat exchangers connected in series and parallel; each of the heat exchanger joints is connected via a valve or a multi-way pipe.

[0015] Optionally, the temperature control cabinet further includes:

[0016] A temperature detection device is installed on the return air fan; the temperature detection device is used to detect the return air temperature of the return air fan.

[0017] Optionally, the temperature control cabinet further includes:

[0018] A temperature compensation device is installed on the air supply fan; the temperature compensation device is in communication with the temperature detection device; the temperature compensation device is used to heat the air supply temperature of the air supply fan.

[0019] Optionally, the temperature-controlled cabinet also includes a circulating air duct, which is installed in the cavity between the insulation box and the inner box; the supply fan is used to send the gas in the circulating air duct into the closed storage space; the return air fan is used to suck the gas in the closed storage space back into the circulating air duct.

[0020] Optionally, the air supply port and the air supply fan are arranged on the back panel of the inner box body, and the air return port and the air return fan are arranged on the side panel of the inner box body;

[0021] The height of the plane where the air supply port and the air supply fan are located is higher than the height of the plane where the air return port and the air return fan are located.

[0022] Optionally, the movable tray includes a tray wire hole, which is arranged on the movable tray; the tray wire hole is used for connecting wiring between the interiors of the temperature control cabinet.

[0023] Optionally, the temperature control cabinet further includes a wiring harness duct, which is arranged on the back panel of the insulation box; the wiring harness duct is used for connecting wiring between the temperature control cabinet and external equipment.

[0024] Optionally, the temperature-controlled cabinet further includes a control panel mounted on the door body; the control panel is communicatively connected to the temperature detection device for performing temperature monitoring and electrical control on the temperature-controlled cabinet.

[0025] Compared with the prior art, the present invention provides a modular energy storage battery temperature control cabinet, which includes an insulation box, an inner box, multiple movable trays and a door body; the inner box and the movable tray are arranged inside the insulation box, and the surface of the inner box is provided with an air supply port, an air supply fan, a return air port and a return air fan, and a tray positioning column is installed on the inner wall of the inner box, and the positioning holes on the tray positioning column cooperate with the fixed feet on the movable tray, so that the movable tray can be placed, and the structure is more reasonable; when the door body is closed, the insulation box, the inner box, the door body and any movable tray together surround a closed storage space, and by moving the movable tray, multiple closed storage spaces are obtained, and the multiple closed storage spaces divide the interior of the insulation box into multiple modules, and the closely arranged battery packs can be divided into multiple groups for separate temperature control, thereby improving the temperature control efficiency, increasing the surface area of ​​contact between air and battery packs, and improving the heat exchange efficiency; at the same time, the movable tray can move parallel to the positioning hole, and the volume and support area of ​​the storage space can be easily changed by moving and adding or removing trays, so as to quickly respond to the different needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 This is a structural diagram of a modular energy storage battery temperature control cabinet in an embodiment of the present invention;

[0028] Figure 2 This is a front view of the appearance of a modular energy storage battery temperature control cabinet in an embodiment of the present invention;

[0029] Figure 3 This is a side view of the appearance of a modular energy storage battery temperature control cabinet in an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of air flow in a circulating air duct in an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of a movable tray in an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the operation of an energy storage battery pack in an embodiment of the present invention.

[0033] Figure markings: 1-door body, 2-control panel, 3-insulation box body, 301-inner box body, 4-tray positioning column, 401-positioning hole, 5-movable tray, 501-tray wire hole, 502-fixed foot, 6-closed storage space, 7-wiring harness duct, 8-condensing equipment, 9-condensing device, 10-variable frequency compressor, 11-evaporating device, 12-air cooling cycle, 121-circulating air duct, 122-supply fan, 123-temperature compensation device, 124-return air fan, 125-temperature detection device. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0037] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] Next, the embodiments of this specification are described with reference to the accompanying drawings:

[0040] See Figure 1 , a modular energy storage battery temperature control cabinet provided by an embodiment of the present invention includes an insulation box 3, an inner box 301, a plurality of movable trays 5 and a door body 1, and the inner box 301 and the plurality of movable trays 5 are arranged inside the insulation box 3; an air supply fan 122 is installed at the air supply port of the surface of the inner box 301, and a return air fan 124 is installed at the return air port, and tray positioning columns 4 are installed on the inner walls of both sides of the inner box 301, each tray positioning column 4 has a plurality of positioning holes 401, and each movable tray 5 has a plurality of fixing feet 502, and the fixing feet 502 are embedded in the corresponding positioning holes 401 to complete the parallel movement of the movable tray 5 between the positioning holes 401, and the position of the positioning hole 401 on the positioning column 4 is matched with the position of the return air fan and the supply air fan, so that when the movable tray 5 is fixed on any one of the positioning holes 401, each closed storage space 6 formed inside the insulation box 3 contains at least one air supply fan 122 and one return air fan 124. At the same time, the heat preservation box 3, the inner box 301, the door 1, and any one of the movable trays 5 together enclose a closed storage space 6. By moving the movable tray 5, multiple closed storage spaces 6 are obtained, so that the inner box 301 contains multiple closed storage spaces 6, and the tightly packed battery pack in the inner box 301 is divided into multiple battery pack modules. Therefore, the modular energy storage battery temperature control cabinet has a reasonable design structure. It contains multiple adjustable storage spaces. The capacity and volume of the closed storage space 6 are controlled by moving the position of the movable tray 5, which solves the user's diverse functional and volume requirements. At the same time, the modular energy storage battery temperature control cabinet divides the tightly packed battery packs into multiple groups for separate temperature control, thereby improving temperature control efficiency.

[0041] This modular energy storage battery temperature control cabinet also includes: a condensing device 8 in an independent space below the insulation box 3, an evaporating device 11 in the cavity between the insulation box 3 and the inner box 301, an air cooling circulation 12 in the inner box 301, a wiring harness duct 7 on the back panel of the insulation box 3, and a control panel 2 on the door 1.

[0042] Specifically, the condensing device 8 is connected to the evaporating device 11 through an infusion tube, wherein the condensing device 8 includes a condensing device 9 and a variable frequency compressor 10, the evaporating device 11 is used to evaporate the refrigerant in the infusion tube into gas, and the condensing device 8 is used to condense the gas in the infusion tube back into the refrigerant. Optionally, the condensing device 8 is wrapped with a foaming material. When placing the condensing device 8, it can be placed in an independent space below the inside of the insulation box 3, or it can be placed outside the insulation box 3 and connected to the evaporating device 11 through an infusion tube wrapped with foaming material. Regardless of whether the condensing device 8 is placed inside or outside the insulation box 3, it is necessary to maintain a sufficient space distance between the condensing device 9 and the evaporating device 11 to avoid refrigeration loss caused by a large temperature difference.

[0043] This modular energy storage battery temperature control cabinet is provided with a temperature detection device 125 on the return air fan 124 for detecting the return air temperature, and a temperature compensation device 123 on the supply air fan 122 for heating the incoming air. Specifically, the temperature detection device 125 detects the return air temperature of the return air fan 124. When the return air temperature is too low, the incoming air is heated by the temperature compensation device 123 so that the temperature of the air cooling cycle 12 reaches the minimum starting temperature of the battery pack. A circulation air duct 121 is provided in the cavity between the thermal insulation box 3 and the inner box 301. The supply air fan 122 is used to send the gas in the circulation air duct 121 into the closed storage space 6, and the return air fan 124 is used to suck the gas in the closed storage space 6 back into the circulation air duct 121. The circulation air duct 121, the supply air fan 122, the return air fan 124, the evaporation device 11, the temperature compensation device 123, the temperature detection device 125 and the closed storage space 6 together constitute the air cooling cycle 12. Because the evaporator 11 absorbs heat while evaporating the refrigerant into gas, the evaporator 11 itself cools. Therefore, during the air cooling cycle 12, the temperature of the enclosed storage space 6 is first detected by the temperature detection device 125. When the temperature of the enclosed storage space 6 exceeds a set value, the supply fan 122 and the return fan 124 are activated. The return fan 124 transfers the absorbed hot air to the circulation duct 121. The hot air passes through the cool evaporator 11 disposed in the circulation duct 121 and is cooled to cold air. The supply fan 122 then blows the cold air through the circulation duct 121 into the enclosed storage space 6, thereby lowering the temperature within the enclosed storage space 6. When the temperature of the enclosed storage space 6 falls below a set value, the supply fan 122 and the temperature compensation device 123 are activated. The temperature compensation device 123 heats the cold air blown in by the supply fan 122, raising the temperature within the enclosed storage space 6. Through the air cooling cycle 12, the temperature within the enclosed storage space 6 reaches the desired temperature, completing the temperature control.

[0044] Furthermore, the present invention arranges the circulating air duct and the evaporation device in the cavity between the heat preservation box body 3 and the inner box body 301, so that the structure of the air cooling cycle 12 in the temperature control cabinet is more reasonable. Specifically, when the modular energy storage battery temperature control cabinet is performing the air cooling cycle 12, under stable operation, because the return air temperature of the return air fan 124 detected by the temperature detection device 125 is proportional to the space temperature of the closed storage space 6, the temperature detection device 125 is also used to monitor the temperature of the closed storage space 6 in real time. When the temperature of the closed storage space 6 is higher than the set value, the supply air fan 122 and the return air fan 124 are started, and the hot air in the closed storage space 6 enters the circulating air duct 121 through the return air fan 124, and is cooled to cold air through the evaporation device 11 (see Figure 4 ), and finally enters the closed storage space 6 again through the air supply fan 122, completing the cooling of the closed storage space 6. At the same time, the modular energy storage battery temperature control cabinet controls the rotation speed of the air supply fan 122 and the return air fan 124, changes the number of series and parallel connections of each heat exchanger module of the evaporation device 11, and cooperates with the power of the variable frequency compressor 10 to change the cooling capacity of the closed storage space 6, so that the modular energy storage battery temperature control cabinet can cool down faster, greatly improving the heat dissipation efficiency. Optionally, the height of the plane where the air supply port and the air supply fan 122 are located is higher than the height of the plane where the return air port and the return air fan 124 are located, making the structure more reasonable. One or more air supply ports and air supply fans 122, one or more return air ports and return air fans 124 can form a group of air supply and return air systems. If there are multiple pairs of fan air ports in a group of air supply and return air systems, the fan air ports can be arranged in a tiered manner along the air flow direction, with the area and density gradually decreasing along the flow direction, thereby optimizing the circulation of hot and cold air.

[0045] Optionally, a harness duct 7 is provided on the back plate of the heat preservation box 3 for directly connecting an external battery pack, power source or device to the closed storage space 6 via a connecting harness; a tray wire hole 501 is provided on the movable tray 5 (see Figure 5 ), used for connecting the battery packs inside the temperature control cabinet, wherein the movable tray 5 is filled with foam material. This modular energy storage battery temperature control cabinet completes the internal and external wiring through the harness duct 7 and the tray wire hole 501, making the structure more reasonable. Figure 2 and Figure 3 The outer frame of the modular energy storage battery temperature control cabinet is completed by the insulation box 3 and the door body 1. At the same time, a control panel 2 is set on the door body 1. The control panel 2 is communicated with the temperature detection device 125 to realize temperature monitoring and electrical control of the temperature control cabinet.

[0046] Through the above combination Figures 1 to 5As can be seen from the description, this modular energy storage battery temperature control cabinet embeds the entire refrigeration cycle system into the cabinet body, optimizing the structure of the temperature control cabinet. At the same time, its cost is much lower than that of a liquid-cooled temperature control cabinet of the same size. The modular temperature control energy storage cabinet of this design includes multiple adjustable closed storage spaces 6, which divide the tightly arranged battery packs into multiple groups for separate temperature control, increase the surface area of ​​contact between air and battery packs, improve the heat exchange efficiency, and achieve the effect of balanced temperature control; at the same time, the volume and placement area of ​​the closed storage space 6 can be easily changed by moving, adding or removing the movable trays 5, so as to quickly respond to the different needs of users. This modular energy storage battery temperature control cabinet sets the refrigeration system and the circulating air duct as a whole on the back panel of the cabinet body, which can effectively solve the problem of low refrigeration efficiency and influence on the center of gravity of the cabinet caused by the small size of the heat exchanger. In addition, each heat exchanger of this modular energy storage battery temperature control cabinet is wrapped into an independent module by a foam layer, and multiple heat exchangers are connected in series and parallel to form an evaporation device 11. At the same time, each closed storage space 6 includes at least one air supply and return system connected to the refrigeration system, forming an independent air circulation for each closed storage space 6. By controlling the start and stop and speed of the supply fan 122 and the return fan 124, changing the number of series and parallel heat exchanger modules, and coordinating the power change of the variable frequency compressor 10, each closed storage space 6 can be individually temperature controlled. It is also possible to stop the temperature control of some closed storage spaces 6 when they are not working. Through this method, it is possible to quickly iterate within a certain range to meet the temperature control requirements of different power consumption or power loads, greatly reducing the cost of rearrangement. Compared with the traditional air-conditioning air supply-heat convection heat dissipation mode, the design of this circulating air duct can effectively improve the temperature control efficiency. Furthermore, the refrigeration system and the air duct can be completely closed to form an internal circulation with the closed storage space 6, which can effectively avoid the problem of air circulation blockage caused by harsh external environment, such as dust, debris, etc.

[0047] Figure 6 This is a schematic diagram of the operation of an energy storage battery set in an embodiment of the present invention. The following describes the operation of the modular energy storage battery temperature control cabinet using a possible implementation as an example. It should be understood that the following description is only for understanding and illustrating the operation method of the modular energy storage battery temperature control cabinet provided by the present invention, and does not constitute a limitation on the scope of the solution of this application. Figure 6 When the modular energy storage battery temperature control cabinet provided by the present invention is used to operate the energy storage battery set, the connecting wire harness in the wire harness duct 7 can be used to connect cabinets 1, 2 and 3 to each other, and then the main control cabinet can be used to control cabinets 1, 2 and 3, thereby greatly improving work efficiency.

[0048] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A modular energy storage battery temperature control cabinet, characterized in that: include: Insulation box, inner box, multiple movable trays, door, circulating air duct, condensing equipment, evaporating device, temperature detection device and temperature compensation device; An inner box and a movable tray are provided inside the heat preservation box; an air supply port and an air return port are provided on the surface of the inner box, an air supply fan is installed at the air supply port, and a return fan is installed at the air return port; At least one pallet positioning post is installed on at least one inner wall of the front, left and right sides of the inner box; each of the pallet positioning posts has a plurality of positioning holes at different heights, the movable pallet is quadrilateral, each of the movable pallets has at least one fixed foot, and each fixed foot is embedded in each corresponding positioning hole; each movable pallet moves parallel to the positioning holes at different heights; the thermal insulation box, the inner box, the door body and any one of the movable pallets together surround a closed storage space, and each closed storage space is provided with at least one supply fan and one return air fan; The circulating air duct is installed in the cavity between the thermal insulation box and the inner box; The condensing device is installed in an independent space within the heat-insulating box or outside the heat-insulating box, and the evaporating device is installed in a cavity between the heat-insulating box and the inner box; the condensing device and the evaporating device are connected via an infusion tube, and a safe distance is maintained between the condensing device and the evaporating device; the condensing device includes a condensing device and a variable frequency compressor; the condensing device is used to condense gas in the infusion tube into liquid; the evaporating device is used to evaporate liquid in the infusion tube into gas; The temperature detection device is installed on the return air fan; the temperature detection device is used to detect the return air temperature of the return air fan; The temperature compensation device is installed on the air supply fan; the temperature compensation device is in communication connection with the temperature detection device; the temperature compensation device is used to heat the air supply temperature of the air supply fan.

2. A modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The evaporation device comprises: The two ends of the evaporation device are respectively connected to the air supply fan and the return air fan; The evaporation device includes a plurality of heat exchangers connected in series and parallel; each of the heat exchanger joints is connected via a valve or a multi-way pipe.

3. The modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The air supply fan is used to send the gas in the circulating air duct into the closed storage space; the air return fan is used to suck the gas in the closed storage space back into the circulating air duct.

4. The modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The air supply port and the air supply fan are arranged on the back plate of the inner box body, and the air return port and the air return fan are arranged on the side plate of the inner box body; The height of the plane where the air supply port and the air supply fan are located is higher than the height of the plane where the air return port and the air return fan are located.

5. The modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The movable tray includes a tray wire hole, which is arranged on the movable tray; the tray wire hole is used for connecting wires between the interiors of the temperature control cabinet.

6. The modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The temperature control cabinet further includes a wiring harness duct, which is arranged on the back plate of the thermal insulation box; the wiring harness duct is used for connecting wiring between the temperature control cabinet and external equipment.

7. The modular energy storage battery temperature control cabinet according to claim 1, characterized in that: The temperature control cabinet further comprises a control panel, which is mounted on the door body; the control panel is in communication connection with the temperature detection device and is used for performing temperature monitoring and electrical control on the temperature control cabinet.

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