Heat dissipation device of liquid cooling energy storage equipment

Abstract

The utility model discloses a heat dissipation device for liquid cooling energy storage equipment, and the heat dissipation device comprises a cabinet body which comprises a containing bin, a circulating pipe is arranged in the containing bin, and a sliding rail is arranged at the bottom of the containing bin; a liquid inlet hole and a liquid outlet hole are formed in the side surface of the cabinet body and are respectively connected with the refrigeration box and the first liquid storage tank on the side surface of the cabinet body; the cabinet body is provided with a cabinet door, and the cabinet door is provided with a control unit and a handle; the battery pack is mounted in the accommodating bin, the battery pack comprises a plurality of battery cells, and overflowing plates are arranged among the battery cells; the fixing plate is mounted at the top of the battery pack, and a positioning groove is formed in the fixing plate. The application is passed. The circulating pipe is filled with the cooling liquid, so that the cooling liquid can cover each surface of the battery cell, the circulating water pump is utilized to circularly move the low-temperature cooling liquid along the circulating pipe, and better heat dissipation efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage equipment, in particular to a heat dissipation device of a liquid-cooled energy storage equipment. BACKGROUND

[0002] The energy storage power station is a device system for storing, converting and releasing recyclable electric energy through electrochemical cells or electromagnetic energy storage media. In order to place more energy storage equipment in a limited space, the battery pack of the energy storage power station is highly concentrated, which may cause insufficient heat dissipation. Under the influence of internal and external factors such as overcharge, overdischarge, overheating, mechanical collision and poor temperature consistency, the temperature of the battery pack rises sharply, which easily causes the collapse of the battery separator and internal short circuit, thereby leading to thermal runaway. If the thermal runaway occurs and spreads in the battery module, it will cause a fire accident of the system. Therefore, it is necessary to set a corresponding heat dissipation device for the energy storage equipment to assist cooling, and also necessary to monitor the real-time temperature of the energy storage equipment.

[0003] At present, the heat dissipation device for the energy storage equipment on the market, in which the water-cooled heat dissipation method can completely immerse the battery pack in the cooling liquid, has higher heat exchange efficiency and battery pack protection effect, and has been gradually popularized and used. The working principle of water-cooled heat dissipation is that the cooling liquid is injected into the battery box loaded with the battery pack, the heat exchange work is completed in the process of immersing the battery pack in the cooling liquid, the heated cooling liquid is discharged from the overflow port of the battery box to the external cooling system, and the cooling liquid is re-entered into the battery pack after being cooled again to realize the circulation cooling.

[0004] In practical application, it is found that the battery pack close to the cooling liquid outlet in the battery box can obtain good cooling effect, while the battery pack far away from the cooling liquid outlet has limited cooling effect, which leads to different heat dissipation conditions of each battery pack in the same battery box, and produces a safety hazard. At the same time, each battery box needs to be connected with the cooling liquid inlet and outlet pipe, and the increase of the number of battery boxes in the heat dissipation device will lead to complex cooling liquid pipeline, thereby occupying space. SUMMARY

[0005] In view of this, the purpose of the present application is to at least solve one of the technical problems existing in the prior art, and to provide an immersion type liquid-cooled heat dissipation device for energy storage equipment, which can uniformly cool each battery pack in the battery box, and better accommodate the cooling liquid pipeline.

[0006] The utility model provides a kind of heat dissipation device of liquid-cooled energy storage equipment, comprising:

[0007] The cabinet body includes an energy storage mechanism, a heat dissipation mechanism is fixedly connected to one side of the inner cavity of the energy storage mechanism, a control mechanism is fixedly connected to one side of the energy storage mechanism, and a battery box, a battery pack and a BMS module are further arranged in the inner cavity of the energy storage mechanism.

[0008] The energy storage mechanism includes a containing bin, an inner wall of the containing bin is provided with a circulating pipe, and two ends of the circulating pipe are connected with a liquid inlet hole and a liquid outlet hole respectively;

[0009] The heat dissipation mechanism includes a first liquid storage tank, a circulating pipe and a refrigeration box, a side surface of an inner cavity of the first liquid storage tank is fixedly connected with a surface of the circulating pipe, the circulating pipe is fixedly connected with a circulating water pump, a side surface of the refrigeration box is connected with the liquid outlet hole, and the refrigeration box is fixedly connected with the side surface of the first liquid storage tank through the circulating pipe;

[0010] The control mechanism includes a control panel and a display screen, the control panel and the display screen are fixedly connected on a surface of the cabinet door, one side of an inner cavity of the control panel is fixedly connected with a surface of the display screen, and control buttons are arranged below the display screen;

[0011] The battery box is placed in the containing bin;

[0012] The battery pack is placed in the battery box, the battery pack includes a plurality of battery cells arranged in an array, an electrode is arranged above the battery cell, and a bottom of the battery cell is in contact with the battery box;

[0013] The BMS module is fixed in the battery box and is electrically connected with the battery pack.

[0014] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0015] The containing bin is provided with a slide rail, and the battery box is connected with the slide rail.

[0016] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0017] The circulating water pump is arranged on a side surface of the first liquid storage tank, the circulating water pump is connected with the first liquid storage tank through the circulating pipe, and the circulating water pump is used for driving the cooling liquid to circulate.

[0018] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0019] A handle is arranged on the surface of the cabinet door.

[0020] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0021] The control panel is used for controlling the working frequency of the circulating water pump, and the display screen is used for displaying the temperature inside the containing bin and the working state of the circulating water pump.

[0022] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0023] The battery box bottom is equipped with a second liquid storage groove, the second liquid storage groove top is equipped with a heat conduction plate, the second liquid storage groove inside is equipped with a through hole, the through hole is used for pouring and discharging cooling liquid, and the through hole outside is also equipped with a sealing plug.

[0024] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0025] The battery pack top is equipped with a fixed plate, the fixed plate is hinged to the battery pack, and the electrode limiting groove is used for connecting with the electrode of the battery cell.

[0026] Further, the heat dissipation device of the liquid-cooled energy storage equipment is characterized in that,

[0027] Each surface of the cabinet body is equipped with a baffle, so that the cabinet body forms a closed structure, the cabinet body is equipped with an exhaust valve, and the exhaust valve is used for balancing the air pressure inside the containing bin.

[0028] Compared with the prior art, the heat dissipation device of the liquid-cooled energy storage equipment has the advantages that,

[0029] 1. The heat dissipation device of the liquid-cooled energy storage equipment adopts the cooperation between the energy storage mechanism, the heat dissipation mechanism, the control mechanism, the battery box, the battery pack and the BMS module, the low-temperature cooling liquid in the liquid storage groove is circulated and moved along the circulating pipe under the action of the circulating pump, the heat emitted by the storage battery is continuously transferred, the heat dissipation effect is achieved, the cooling liquid with heat is re-cooled under the action of the refrigeration box, enters the first liquid storage groove through the circulating pipe, and re-enters the circulating system, so that the circulation and utilization of the cooling liquid are facilitated.

[0030] 2. The heat dissipation device of the liquid-cooled energy storage equipment adopts the cooperation between the control panel, the display screen and the control button, the debugging of the energy storage device can be completed by observing the options on the display screen and pressing the control button, the energy storage device can be remotely controlled, the circulating water pump is debugged to accelerate the circulation of the cooling liquid by observing the state of the containing bin displayed by the display, and better cooling effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings refer to the same or similar components. In the drawings:

[0032] Figure 1 The cabinet body structure schematic view provided by the embodiments of the present application;

[0033] Figure 2 A section view of the battery box is provided for the embodiment of the utility model;

[0034] Figure 3 A structure schematic view of the inside of the cabinet body is provided for the embodiment of the utility model;

[0035] Figure 4 A structure schematic view of the side of the cabinet body is provided for the embodiment of the utility model;

[0036] Figure 5 A schematic view of the section of the battery box is provided for the embodiment of the utility model;

[0037] Figure 6 A structure schematic view of the fixing plate of the battery box is provided for the embodiment of the utility model;

[0038] In the figure: 100-cabinet body; 101-refrigeration box; 102-circulation pipe; 103-first liquid storage tank; 104-exhaust valve; 105-circulation pipe; 106-sliding rail; 107-circulation water pump; 108-liquid inlet hole; 109-liquid outlet hole; 200-cabinet door; 201-display screen; 202-handle; 203-wiring slot; 204-control panel; 205-control button; 300-battery pack; 301-electrode; 302-cell; 400-battery box; 401-BMS module; 402-pull part; 403-slideway; 404-connecting shaft; 405-sealing plug; 406-through hole; 407-second liquid storage tank; 408-heat conduction plate; 500-fixing plate; 501-electrode limiting groove. DETAILED DESCRIPTION

[0039] The specific embodiments of the utility model are described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0040] In the description of the present application, it is understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated technical features. Thus, a feature defined with "first", "second", etc. can include one or more of the features implicitly or explicitly.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Referring to Figure 1 and Figure 2 The embodiment provides a liquid-cooled energy storage device, which comprises:

[0044] The cabinet body 100 comprises an energy storage mechanism, a heat dissipation mechanism is fixedly connected to one side of an inner cavity of the energy storage mechanism, a control mechanism is fixedly connected to one side of the energy storage mechanism, and a battery box 400, a battery pack 300 and a BMS module 401 are further arranged in the inner cavity of the energy storage mechanism.

[0045] Specifically, the energy storage mechanism comprises a containing bin, the inner wall of the containing bin is provided with a circulating pipe 102, and the two ends of the circulating pipe 102 are connected with a liquid inlet hole 108 and a liquid outlet hole 109 respectively; the heat dissipation mechanism comprises a first liquid storage groove 103, the circulating pipe 102 and a refrigeration box 101, the side surface of the inner cavity of the first liquid storage groove 103 is fixedly connected with the surface of the circulating pipe 102, the circulating pipe 102 is fixedly connected with a circulating water pump 107, the side surface of the refrigeration box 101 is connected with the liquid outlet hole 109, and the side surface of the refrigeration box 101 is fixedly connected with the side surface of the first liquid storage groove 103 through the circulating pipe 102; the control mechanism comprises a control panel 204 and a display screen 201, the control panel 204 and the display screen 201 are fixedly connected to the surface of a cabinet door 200, one side of the inner cavity of the control panel 204 is fixedly connected with the surface of the display screen 201, and a control button 205 is arranged below the display screen 201; the battery box 400 is placed in the containing bin; the battery pack 300 is arranged in the battery box 400, the battery pack 300 comprises a plurality of battery cells 302 arranged in an array, an electrode 301 is arranged above the battery cell 302, and the bottom of the battery cell 302 is in contact with the battery box 400; the BMS module 401 is fixed in the battery box 400 and electrically connected with the battery pack 300.

[0046] The cabinet body 100 in the above embodiment is used to support the overall weight of the equipment and ensure that the equipment can be fixed flexibly and stably on the ground, the cabinet body 100 comprises an energy storage mechanism, the energy storage mechanism is provided with a containing bin, the inner wall of the containing bin is fixedly connected with a circulating pipe 102, the two ends of the circulating pipe 102 are respectively connected with a liquid inlet hole 108 and a liquid outlet hole 109, the liquid outlet hole 109 is communicated with a refrigeration box 101, the refrigeration box 101 re-refrigerates the cooling liquid carrying heat, and the cooled cooling liquid enters a first liquid storage cavity through the circulating pipe 102 under the action of gravity, and the first liquid storage cavity sends the cooling liquid therein into a circulating system through a circulating water pump 107; the surface of the cabinet door 200 is provided with a control panel 204 and a display, the control panel 204 can control the working frequency of the circulating water pump 107 through a control button 205, and the display is used to display the temperature inside the containing bin and the working state of the circulating water pump 107; a BMS module 401 is fixed in the battery box 400 and electrically connected with the battery pack 300, and is used to monitor the temperature, current and power and other performance parameters of the battery pack 300.

[0047] As can be seen, by starting the circulating pump, the low-temperature cooling liquid in the liquid storage groove is moved in circulation under the action of the circulating pump along the circulating pipe 102, so that the heat emitted by the battery is continuously transferred, and the cooling effect is achieved. At the same time, under the action of the refrigeration box 101, the cooling liquid with heat is re-refrigerated, enters the first liquid storage groove 103 through the circulating pipe 102, and re-enters the circulating system, which is conducive to the recycling of the cooling liquid. The mutual cooperation among the control panel 204, the display screen 201 and the control button 205 can complete the debugging of the energy storage device by observing the options on the display screen 201 and pressing the control button 205, so that the energy storage device can be remotely controlled. The circulating water pump 107 is debugged by observing the state of the containing bin displayed by the display to accelerate the circulation of the cooling liquid, so that better cooling effect is achieved.

[0048] Referring to Figure 3 As shown in the figure, the embodiment provides a liquid cooling energy storage device, the containing bin bottom is provided with a slide rail 106, and the battery box 400 is connected with the slide rail 106.

[0049] Referring to Figure 4 As shown in the figure, the embodiment provides a liquid cooling energy storage device, the containing bin bottom is provided with a slide rail 106, and the slide rail 106 corresponds to a slide way 403 at the bottom side of the battery box 400, so that the battery box 400 is slidably connected with the containing bin through the slide way 403, and the slide way 403 and the slide rail 106 also play a fixing role, so that the battery box 400 is fixed transversely in the containing bin, and the side of the battery box is provided with a connecting shaft 404.

[0050] Specifically, the circulating water pump 107 is arranged on the side of the first liquid storage groove 103 and connected through the circulating pipe 102, and is used to drive the flow of the cooling liquid.

[0051] Specifically, the circulating water pump 107 is arranged on the side of the first liquid storage tank 103, which is used to drive the flow of the cooling liquid, promote the circulation of the cooling liquid in the circulating pipe 102, and accelerate the cooling of the containing bin.

[0052] Specifically, the cabinet door 200 is provided with a handle 202, and the side of the cabinet door 200 is provided with a wire slot 203.

[0053] Specifically, the cabinet door 200 is provided with a handle 202 to facilitate pulling, and the subsequent maintenance and replacement of the battery box 400.

[0054] Specifically, the control panel 204 is used to control the working frequency of the circulating water pump 107, and the display screen 201 is used to display the temperature inside the containing bin and the working state of the circulating water pump 107.

[0055] Specifically, the control panel 204 can control the working frequency of the circulating water pump 107 through the control button 205. When the display shows that the temperature inside the containing bin is high, the working frequency of the circulating water pump 107 can be increased to speed up the transfer of the cooling liquid in the circulating pipe 102, thereby quickly reducing the temperature inside the containing bin.

[0056] Referring to Figure 5 The second liquid storage tank 407 is provided on the bottom of the battery box 400, the heat conduction plate 408 is arranged above the second liquid storage tank 407, the second liquid storage tank 407 cools the containing bin through the heat conduction plate 408, the through hole 406 is arranged on the inner side of the second liquid storage tank 407, the through hole 406 is used to pour in and pour out the cooling liquid, and the sealing plug 405 is further arranged on the outer side of the through hole 406.

[0057] Specifically, the second liquid storage tank 407 is arranged on the bottom of the battery box 400, the cooling liquid is filled in the second liquid storage tank 407 through the through hole 406, the heat conduction plate 408 is arranged on the top of the second liquid storage tank 407, and the second liquid storage tank 407 cools the containing bin through the heat conduction plate 408; the hand-pulling part 102 is arranged on the side of the battery box 400, which facilitates pulling and facilitates the subsequent maintenance and replacement of the battery box 400.

[0058] Referring to Figure 6 The second liquid storage tank 407 is arranged on the bottom of the battery box 400, the heat conduction plate 408 is arranged on the top of the second liquid storage tank 407, and the second liquid storage tank 407 cools the containing bin through the heat conduction plate 408; the hand-pulling part 102 is arranged on the side of the battery box 400, which facilitates pulling and facilitates the subsequent maintenance and replacement of the battery box 400.

[0059] Specifically, the second liquid storage tank 407 is arranged on the bottom of the battery box 400, the cooling liquid is filled in the second liquid storage tank 407 through the through hole 406, the heat conduction plate 408 is arranged on the top of the second liquid storage tank 407, and the second liquid storage tank 407 cools the containing bin through the heat conduction plate 408; the hand-pulling part 102 is arranged on the side of the battery box 400, which facilitates pulling and facilitates the subsequent maintenance and replacement of the battery box 400.

[0060] Specifically, the cabinet 100 is provided with a baffle on each surface, so that the cabinet 100 forms a closed structure, and the cabinet 100 is provided with an exhaust valve 104 for balancing the air pressure inside the containing bin.

[0061] Specifically, the baffle on the surface of the cabinet 100 protects the cabinet 100 and forms a closed structure, and the cabinet 100 is provided with an exhaust valve 104 above, which is opened to balance the air pressure inside the containing bin when the air pressure inside the containing bin is too high.

[0062] Those skilled in the art can understand that the above description is only preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A heat dissipation device for a liquid-cooled energy storage equipment, characterized in that, include: The cabinet includes an energy storage mechanism, a heat dissipation mechanism is fixedly connected to one side of the inner cavity of the energy storage mechanism, a control mechanism is fixedly connected to one side of the energy storage mechanism, and a battery box, a battery pack and a BMS module are also provided inside the inner cavity of the energy storage mechanism. The energy storage mechanism includes a storage chamber, the inner wall of which is provided with a circulation pipe, and the two ends of the circulation pipe are respectively connected to an inlet and an outlet. The heat dissipation mechanism includes a first liquid storage tank, a circulation pipe, and a cooling box. The side of the inner cavity of the first liquid storage tank is fixedly connected to the surface of the circulation pipe. The circulation pipe is fixedly connected to a circulating water pump. The side of the cooling box is connected to a liquid outlet. The cooling box is fixedly connected to the side of the first liquid storage tank through the circulation pipe. The control mechanism includes a control panel and a display screen. The control panel and the display screen are fixedly connected to the surface of the cabinet door. One side of the inner cavity of the control panel is fixedly connected to the surface of the display screen. Control buttons are provided below the display screen. The battery box is placed in the receiving compartment; The battery pack is placed inside the battery box. The battery pack includes multiple cells arranged in an array. Electrodes are provided on the top of each cell, and the bottom of each cell is in contact with the battery box. The BMS module is fixed inside the battery box and electrically connected to the battery pack.

2. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, The bottom of the storage compartment is equipped with a slide rail, and the battery box is connected to the slide rail.

3. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, The circulating water pump is located on the side of the first liquid storage tank. The circulating water pump is connected to the first liquid storage tank through the circulating pipe. The circulating water pump is used to drive the coolant to circulate.

4. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, The cabinet door is equipped with a handle.

5. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, The control panel is used to control the operating frequency of the circulating water pump, and the display screen is used to display the temperature inside the containment chamber and the operating status of the circulating water pump.

6. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, The battery box has a second liquid storage tank at the bottom and a heat-conducting plate above it. The second liquid storage tank cools the container through the heat-conducting plate. The inner side of the second liquid storage tank has a through hole for filling and draining coolant. A sealing plug is also provided on the outer side of the through hole.

7. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, A fixing plate is provided above the battery pack, which is installed on the top of the battery pack and is hinged to the battery pack.

8. The heat dissipation device for the liquid-cooled energy storage equipment according to claim 1, characterized in that, Each surface of the cabinet is equipped with a baffle, which makes the cabinet form a closed structure. The cabinet is equipped with an exhaust valve, which is used to balance the air pressure inside the storage compartment.

Images