Lithium battery energy storage device and energy storage method

Abstract

The invention relates to a lithium battery energy storage device and an energy storage method, and relates to the technical field of energy storage devices.The lithium battery energy storage device comprises a box body, a heat insulation plate set is arranged in the box body, and the heat insulation plate set divides the space in the box body into a first space and a second space which are independent of each other; the power supply manager is arranged on the box body; the energy storage mechanism comprises a first energy storage assembly and a second energy storage assembly, the first energy storage assembly is located in the first space, the second energy storage assembly is located in the second space, and the first energy storage assembly and the second energy storage assembly are independently and electrically connected with the power manager; the power supply manager is used for controlling the first energy storage assembly and the second energy storage assembly to alternately discharge or charge; and the active heat dissipation mechanism is arranged in the box body, and the active heat dissipation mechanism is used for dissipating heat of the first energy storage assembly and the second energy storage assembly. Under the condition that the energy storage device works for a long time, the possibility that the interior of the energy storage device is overheated to cause fire can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to a lithium battery energy storage device and an energy storage method. Background Art

[0002] Lithium battery is a secondary battery that uses the movement of lithium ions between positive and negative electrodes to achieve charging and discharging. It has the advantages of high energy density, long life, and no memory effect. It is widely used in consumer electronics, electric vehicles, energy storage and other fields.

[0003] Existing lithium battery energy storage devices can supply power to electrical equipment. During the charging and discharging process of the lithium battery energy storage device, the lithium battery energy storage device will generate heat. The lithium battery energy storage device is very sensitive to the operating temperature. When the temperature of the lithium battery energy storage device is high, the battery side reactions will be aggravated, causing capacity decay and shortened life, and may even cause a fire due to overheating.

[0004] At present, the heat dissipation method for lithium battery energy storage devices is mainly air cooling, which is basically achieved by adding a fan to the lithium battery energy storage device.

[0005] Since the existing lithium battery energy storage device is generally composed of multiple lithium batteries, there will be gaps in the lithium battery energy storage device. Since air cooling is to take away the heat in the lithium battery energy storage device through the heat dissipation airflow, and the movement direction of the heat dissipation airflow in the existing air cooling method is single, the heat dissipation airflow cannot enter some gaps in the lithium battery energy storage device. When the heat accumulates in this gap, it will make the temperature of the lithium battery energy storage device difficult to control. Especially when the lithium battery energy storage device works for a long time, the lithium battery energy storage device will continue to generate heat, which will cause the temperature of the lithium battery energy storage device to continue to rise. When the lithium battery energy storage device is continuously in a high temperature environment, it is easy to cause the lithium battery energy storage device to overheat and catch fire. Summary of the invention

[0006] The present application provides a lithium battery energy storage device and an energy storage method, the purpose of which is to improve the heat dissipation capacity of the lithium battery energy storage device and reduce the possibility of overheating of the lithium battery energy storage device.

[0007] In the first aspect, the present application provides a lithium battery energy storage device adopting the following technical solution: A lithium battery energy storage device comprises a box body, wherein a heat insulation board group is arranged in the box body, and the heat insulation board group divides the space in the box body into a first space and a second space which are independent of each other; a power manager, wherein the power manager is arranged on the box body; an energy storage mechanism, comprising a first energy storage component and a second energy storage component, wherein the first energy storage component is located in the first space, and the second energy storage component is located in the second space, and the first energy storage component and the second energy storage component are both independently electrically connected to the power manager, and the power manager is used to control the first energy storage component and the second energy storage component to discharge or charge alternately; and an active heat dissipation mechanism, wherein the active heat dissipation mechanism is arranged in the box body, and the active heat dissipation mechanism is used to dissipate heat for the first energy storage component and the second energy storage component.

[0008] By adopting the above technical solution, the energy storage device can realize charging and discharging functions through the coordinated arrangement of the box, the power manager and the energy storage mechanism, thereby realizing the function of the energy storage device.

[0009] On this basis, the energy storage mechanism is arranged through the coordination of the first energy storage component and the second energy storage component. Since the first energy storage component and the second energy storage component are independently electrically connected to the power manager, the power manager can control the first energy storage component and the second energy storage component to work alternately in sequence. Then, when the energy storage device is charged, the first energy storage component and the second energy storage component can be charged alternately; when the energy storage device is discharged, the first energy storage component and the second energy storage component can be discharged alternately.

[0010] This means that when the first energy storage component generates heat, the second energy storage component stops working to cool down; similarly, when the second energy storage component generates heat, the first energy storage component stops working to cool down. Since the first energy storage component and the second energy storage component are located in the first space and the second space respectively, the first space and the second space are independent of each other, so the heat generated by the first energy storage component and the second energy storage component will not affect each other.

[0011] Since the first energy storage component and the second energy storage component work alternately, when the corresponding first energy storage component or the second energy storage component is not working, the active heat dissipation mechanism can quickly dissipate the heat of the non-working first energy storage component or the second energy storage component, and in this process, the first energy storage component or the second energy storage component that stops working does not generate heat, so the heat in the first energy storage component and the second energy storage component will be quickly transferred to the environment with relatively low temperature, thereby quickly reducing the temperature of the first energy storage component and the second energy storage component, and preventing the first energy storage component and the second energy storage component from overheating. This can reduce the possibility of overheating and fire inside the energy storage device while ensuring that the energy storage device works for a long time.

[0012] Optionally, the insulation plate group includes a first plate and a second plate, the first plate and the second plate are arranged in parallel and spaced apart, the first space is located on a side of the first plate away from the second plate, the second space is located on a side of the second plate away from the first plate, and an insulation space is formed between the first plate and the second plate; the active heat dissipation mechanism includes a third air-cooled heat dissipation component, and the third air-cooled heat dissipation component is located in the insulation space.

[0013] By adopting the above technical solution, the partition plate group forms an insulating space between the first energy storage component and the second energy storage component through the coordinated arrangement of the first plate and the second plate, which can block the mutual conduction of heat between the first space and the second space, thereby ensuring that the first energy storage component and the second energy storage component can fully dissipate heat when they stop working, which can further reduce the possibility of overheating and fire inside the energy storage device.

[0014] The active heat dissipation mechanism can accelerate the air flow in the heat-insulating space by disposing the third air-cooling heat dissipation component, which can further block the mutual conduction of heat between the first space and the second space.

[0015] Optionally, the active heat dissipation mechanism further includes a first air-cooled heat dissipation component and a second air-cooled heat dissipation component, wherein the first air-cooled heat dissipation component is located in the first space, and the second air-cooled heat dissipation component is located in the second space.

[0016] By adopting the above technical solution, the active heat dissipation mechanism enables the first energy storage component and the second energy storage component to dissipate heat independently through the coordinated arrangement of the first air-cooled heat dissipation component and the second air-cooled heat dissipation component, which can ensure that the first energy storage component and the second energy storage component can quickly cool down and dissipate heat when not working.

[0017] Optionally, the first air-cooled heat dissipation component includes a first fan group, and a first air inlet hole group and a first heat dissipation hole group are respectively opened on the opposite side walls of the box along its own length direction, and the first air inlet hole group and the first heat dissipation hole group are both connected to the first space; the first fan group is arranged on the side wall of the box where the first air inlet hole group is opened.

[0018] By adopting the above technical solution, the first air-cooled heat dissipation component can form a heat dissipation airflow flowing along the length direction of the box body in the box body through the coordinated arrangement of the first fan group, the first air inlet hole group and the first heat dissipation hole group, thereby realizing the heat dissipation function.

[0019] Optionally, the first air-cooled heat dissipation component includes a second fan group, and a second air inlet hole group and a second heat dissipation hole group are respectively opened on the opposite side walls of the box along its width direction, and the second air inlet hole group and the second heat dissipation hole group are both connected to the second space; the second fan group is arranged on the side wall of the box where the second air inlet hole group is opened.

[0020] By adopting the above technical solution, the first air-cooled heat dissipation component can form a heat dissipation airflow flowing along the width direction of the box body in the box body through the coordinated arrangement of the second fan group, the second air inlet hole group and the second heat dissipation hole group, thereby realizing the heat dissipation function.

[0021] The first fan group and the second fan group are arranged in coordination, so that there is a heat dissipation airflow flowing along the length direction of the box body and a heat dissipation airflow flowing along the width direction of the box body in the first space, which can reduce the heat dissipation dead angle in the first space, and thus can increase the heat dissipation effect. In addition, the first fan group and the second fan group can also be used alternately, thereby increasing the service life of the first fan group and the second fan group.

[0022] Optionally, the first energy storage assembly includes a plurality of first batteries, and the plurality of first batteries are spaced in sequence along the width direction of the box; a first connecting member is provided on the first battery, and the first connecting member includes two heat conducting plates, and the two heat conducting plates are spaced along the width direction of the box, and the first battery is located between the corresponding two heat conducting plates, and the heat conducting plates are connected to the corresponding side walls of the first batteries, and the two heat conducting plates between two adjacent first batteries are detachably connected; the heat conducting plates are fitted to the side walls of the first batteries, and a heat conducting groove is provided on the side of the heat conducting plate away from the first battery, and the heat conducting groove penetrates the heat conducting plate along the length direction of the box.

[0023] By adopting the above technical solution, the first energy storage component can ensure the discharge, energy storage and charging functions of the first energy storage component through the coordinated arrangement of a plurality of first batteries.

[0024] Since the first battery is provided with a first connector, the first connector includes two heat conducting plates, the heat conducting plates are connected to the first battery, and heat conducting grooves are provided on the heat conducting plates, the provision of the heat conducting plates can increase the heat dissipation area of ​​the first battery, thereby improving the heat dissipation effect of the first battery.

[0025] The two heat conducting plates between two adjacent first batteries are detachably connected, so that a plurality of first batteries can be assembled through the first connecting member, which facilitates the assembly of the first energy storage component.

[0026] Since there are two heat-conducting plates between two adjacent first batteries after assembly, the two first batteries are spaced apart, thereby increasing the spacing between the two adjacent first batteries, making it easier to quickly discharge heat between the two adjacent first batteries, thereby increasing the heat dissipation speed of the first energy storage component.

[0027] Optionally, a first through hole is formed on a side wall of the first battery facing the heat conducting plate, a second through hole is formed at the bottom of the heat conducting groove, and the first through hole is connected to the corresponding second through hole.

[0028] By adopting the above technical solution, the first through hole and the second through hole are arranged in coordination so that the inner and outer spaces of the first battery are connected, which makes it easy to dissipate the internal heat of the first battery to the external space of the first battery, thereby reducing the heating rate of the first battery and improving the heat dissipation efficiency of the first battery.

[0029] Optionally, a closing plate is provided on the heat conducting plate, the closing plate is located in the heat conducting groove, the closing plate is rotatably connected to the groove bottom corresponding to the heat conducting groove, a rotating driving member is provided on the heat conducting plate, the rotating driving member is connected to the closing plate, and the rotating driving member is used to drive the closing plate to rotate until it closes the corresponding second through hole.

[0030] By adopting the above technical solution, the closed plate and the closed driving member are arranged in coordination, so that the closed plate can close the second through hole or open the second through hole, which can switch between two different heat dissipation methods. The first is that the second through hole is opened. At this time, when the active heat dissipation mechanism dissipates heat, the heat dissipation airflow can enter the first battery, thereby improving the heat dissipation efficiency. The second is that the second through hole is closed. At this time, the active heat dissipation mechanism can only take away the heat on the heat conductive plate, which can prevent the heat dissipation airflow from entering the first battery. This heat dissipation method reduces the heat dissipation efficiency, but for conditions with poor working environment, it can prevent dust, air with high humidity or pollutants from entering the first battery, which can increase the service life of the first battery.

[0031] Optionally, a plurality of first energy storage components are provided, and the plurality of first energy storage components are spaced apart in sequence along the length direction of the box body; a second connecting member is also provided on the first battery, and the first connecting member has the same structure as the second connecting member, and the two heat conducting plates in the second connecting member are respectively provided on the opposite side walls of the first battery along the length direction of the box body.

[0032] By adopting the above technical solution, since there are several first energy storage components, all the first batteries are arranged in a matrix, and the matching arrangement of the first connecting member and the second connecting member on the first battery enables the several first batteries arranged in the matrix to be spliced ​​into a whole, which facilitates the assembly of several first energy storage components.

[0033] The coordinated arrangement of the second connecting member and the first connecting member enables the first battery to be spaced apart from any adjacent first battery, which can increase the spacing between two adjacent first batteries and facilitate the rapid discharge of heat between the two adjacent first batteries, thereby increasing the heat dissipation speed of the first energy storage component.

[0034] In a second aspect, a lithium battery energy storage method provided by the present application adopts the following technical solution: A lithium battery energy storage method, used for the above-mentioned lithium battery energy storage device, comprises the following steps: installing a first energy storage component, a second energy storage component and a heat insulation board group into a box, and electrically connecting the first energy storage component and the second energy storage component to a power manager; when the lithium battery energy storage device is charged or discharged, the power manager controls the first energy storage component and the second energy storage component to charge or discharge alternately.

[0035] By adopting the above technical solution, by controlling the first energy storage component and the second energy storage component to work alternately, it is possible to ensure that the first energy storage component and the second energy storage component will not work for a long time, and thus will not generate heat for a long time, so that the overall temperature of the first energy storage component and the second energy storage component will not rise too high. On this basis, under the action of the active heat dissipation mechanism, the heat generated by the first energy storage component and the second energy storage component during operation can be quickly reduced, and the temperature of the first energy storage component and the second energy storage component can be reduced, thereby reducing the possibility of overheating of the energy storage device and catching fire.

[0036] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can prevent a single first energy storage component or a single second energy storage component from continuously generating heat under long-term operation by setting the first energy storage component and the second energy storage component to work alternately. When the first energy storage component or the second energy storage component stops working, the active heat dissipation mechanism can quickly reduce the temperature of the first energy storage component or the second energy storage component, which can reduce the possibility of overheating and fire inside the energy storage device while ensuring that the energy storage device works for a long time.

[0037] 2. The present application can increase the spacing between two adjacent first batteries through the coordinated arrangement of the first connector and the second connector, which can reduce the heat accumulation between the two adjacent first batteries and enable the heat accumulated between the two adjacent first batteries to be quickly dissipated, thereby reducing the possibility of overheating and fire inside the energy storage device.

[0038] 3. The first air-cooled heat dissipation component of the present application can form a heat dissipation airflow flowing along the length and width directions of the box body through the coordinated arrangement of the first fan group and the second fan group, which can increase the coverage of the heat dissipation airflow in the box body and increase the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the lithium battery energy storage device of the present application.

[0040] Figure 2 It is a schematic diagram of the cross-sectional structure of the lithium battery energy storage device of the present application.

[0041] Figure 3 It is a schematic diagram of the overall structure of the energy storage mechanism of the present application.

[0042] Figure 4 It is a schematic diagram of the overall structure of the lithium battery energy storage device of the present application from another perspective.

[0043] Figure 5 It is a schematic diagram of the overall structure of the first energy storage component of the present application.

[0044] Figure 6 It is a schematic diagram of the overall structure of the first battery of the present application.

[0045] Figure 7 It is a schematic diagram of the cross-sectional structure of the first battery of the present application.

[0046] Figure 8 It is a schematic diagram of the overall structure of the heat conducting plate of the present application.

[0047] Fig. 9 It is a partial structural diagram of the energy storage mechanism of the present application.

[0048] Fig.10 It is a schematic diagram of the overall structure of the first battery and the corresponding second battery of the present application.

[0049] Fig.11 It is a schematic diagram of the overall structure of the heat insulation board group of the present application.

[0050] In the figure, 1, box; 11, first space; 12, second space; 13, heat insulation space; 2, power manager; 3, energy storage mechanism; 31, first energy storage component; 311, first battery; 32, second energy storage component; 321, second battery; 33, first heat dissipation duct; 34, second heat dissipation duct; 4, heat insulation board group; 41, first board; 42, second board; 43, clearance hole; 44, first long board; 45, second long board; 46, third long board; 47, fourth long board; 5, active heat dissipation mechanism; 51, first air cooling heat dissipation component; 511, first fan group; 512, first air inlet group; 51 3. First heat dissipation hole group; 514. Second fan group; 515. Second air inlet hole group; 516. Second heat dissipation hole group; 52. Second air-cooled heat dissipation component; 53. Third air-cooled heat dissipation component; 6. Heat dissipation enhancement mechanism; 61. First connecting member; 611. Heat conducting plate; 6111. Heat conducting groove; 6112. Heat conducting hole; 6113. Second through hole; 612. First through hole; 613. Closing plate; 6131. ​​Air flow outlet; 614. Rotating drive member; 6141. Spring piece; 6142. Pressing plate; 6143. Magnetic drive member; 6144. Electromagnet; 62. Second connecting member; 63. Third connecting member. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1 -Attached Fig.11 , further details of this application are given.

[0052] A lithium battery energy storage device, referring to Figure 1 and Figure 2 , comprising a box body 1, a power manager 2 is arranged on the box body 1, and an energy storage mechanism 3 is arranged inside the box body 1.

[0053] Reference Figure 2 and Figure 3 The energy storage mechanism 3 includes a first energy storage component 31 and a second energy storage component 32 . The first energy storage component 31 and the second energy storage component 32 are independently arranged, and the first energy storage component 31 and the second energy storage component 32 are both electrically connected to the power manager 2 .

[0054] Due to the setting of the power manager 2, the first energy storage component 31 and the second energy storage component 32 can be powered and charged independently of each other. Under the action of the power manager 2, the first energy storage component 31 and the second energy storage component 32 are charged and discharged alternately in sequence, which enables the entire energy storage device to be continuously charged or continuously discharged to the outside, preventing the first energy storage component 31 or the second energy storage component 32 from overheating due to continuous operation.

[0055] Reference Figure 2 and Figure 3A heat insulation board group 4 is arranged in the box body 1, and the heat insulation board group 4 is detachably connected to the inner wall of the box body 1. The heat insulation board group 4 is arranged horizontally, and the heat insulation board group 4 divides the space in the box body 1 into a first space 11 and a second space 12 which are independent of each other. The first space 11 and the second space 12 are arranged at intervals in the vertical direction. The first energy storage component 31 is located in the first space 11, and the second energy storage component 32 is located in the second space 12.

[0056] Since the heat insulation plate group 4 separates the first energy storage assembly 31 from the second energy storage assembly 32 , this can block the heat conduction between the first energy storage assembly 31 and the second energy storage assembly 32 .

[0057] Reference Figure 2 and Figure 3 The heat insulation board group 4 includes a first board 41 and a second board 42, the first board 41 and the second board 42 are both arranged horizontally, and the first board 41 and the second board 42 are arranged parallel and spaced in the vertical direction, the first board 41 is located above the second board 42, and a heat insulation space 13 is formed between the first board 41 and the second board 42, and the first space 11 is located above the first board 41, and the second space 12 is located below the second board 42, which makes the first space 11, the heat insulation space 13 and the second space 12 arranged in sequence in the vertical direction. In this embodiment, the first board 41 and the second board 42 are both connected to the box body 1 by bolts.

[0058] The provision of the heat-insulating space 13 can further block the heat conduction between the first energy storage component 31 and the second energy storage component 32 .

[0059] Reference Figure 1 and Figure 2 An active heat dissipation mechanism 5 is provided on the box body 1 , and the active heat dissipation mechanism 5 includes a first air-cooling heat dissipation component 51 , and the first air-cooling heat dissipation component 51 is located in the first space 11 .

[0060] Reference Figure 1 and Figure 4 The first air-cooling heat dissipation component 51 includes a first fan group 511, which is arranged on a side wall of the box body 1 in the length direction, and the first fan group 511 is arranged opposite to the corresponding first space 11. The box body 1 has a first air inlet group 512 and a first heat dissipation hole group 513 respectively opened on two opposite side walls along its length direction, and the first air inlet group 512 and the first heat dissipation hole group 513 are both connected to the corresponding first space 11. The first fan group 511 is located on the side wall of the box body 1 where the first air inlet group 512 is opened.

[0061] Under the action of the first fan group 511, the first air inlet hole group 512 and the first heat dissipation hole group 513, a heat dissipation airflow flows along the length direction of the box body 1 in the first space 11, which can improve the heat dissipation effect.

[0062] Reference Figure 1 and Figure 4 The first air-cooling heat dissipation component 51 further includes a second fan group 514, which is disposed on a side wall of the box body 1 in the width direction, and the second fan group 514 is disposed opposite to the corresponding first space 11. The box body 1 is provided with a second air inlet group 515 and a second heat dissipation hole group 516 on two opposite side walls along its width direction, respectively, and the second air inlet group 515 and the second heat dissipation hole group 516 are both connected to the corresponding first space 11. The second fan group 514 is located on the side wall of the box body 1 where the second air inlet group 515 is provided.

[0063] The coordination of the first fan group 511 and the second fan group 514 enables the existence of heat dissipation airflow flowing along the length direction of the box body 1 and heat dissipation airflow flowing along the width direction of the box body 1 in the first space 11, which can reduce the heat dead corner in the first space 11 and enhance the heat dissipation efficiency. In addition, the two first fan groups 511 and the second fan group 514 can be used alternately, which can also extend the service life of the first air-cooled heat dissipation component 51.

[0064] Reference Figure 1 and Figure 2 The active heat dissipation mechanism 5 further includes a second air-cooling heat dissipation component 52 and a third air-cooling heat dissipation component 53. The second air-cooling heat dissipation component 52 is located in the second space 12, and the third air-cooling heat dissipation component 53 is located in the heat-insulating space 13. The second air-cooling heat dissipation component 52 can independently dissipate heat for the second energy storage component 32, while the third air-cooling heat dissipation component 53 can accelerate the discharge of heat in the heat-insulating space 13.

[0065] In this embodiment, the first air-cooling heat dissipation component 51, the second air-cooling heat dissipation component 52 and the third air-cooling heat dissipation component 53 have the same structure.

[0066] Reference Figure 3 and Figure 5 The first energy storage assembly 31 includes a plurality of first batteries 311 , and the plurality of first batteries 311 are arranged in sequence along the width direction of the box body 1 .

[0067] Reference Figure 3 and Figure 5 The lithium battery energy storage device also includes a heat dissipation enhancement mechanism 6, which includes a plurality of first connecting members 61, and the first connecting members 61 are arranged in a one-to-one correspondence with the first batteries 311.

[0068] Reference Figure 5 and Figure 6The first connecting member 61 includes two heat conducting plates 611, which are spaced apart along the width direction of the box body 1, and the first battery 311 is located between the two corresponding heat conducting plates 611, and the two heat conducting plates 611 are detachably connected to the side walls of the corresponding first battery 311, and the two heat conducting plates 611 between two adjacent first batteries 311 are detachably connected.

[0069] When assembling the first energy storage assembly 31, the first connector 61 is provided so that two adjacent first batteries 311 can be connected. In addition, due to the provision of the first connector 61, two adjacent first batteries 311 are provided in sequence at intervals, which can prevent heat from accumulating between the two adjacent first batteries 311. In addition, the first connector 61 can increase the heat dissipation area of ​​the first battery 311 through the provision of two heat conducting plates 611, thereby increasing the heat dissipation capacity of the first battery 311.

[0070] Reference Figure 5 and Figure 6 The heat conducting plate 611 is provided with a heat conducting groove 6111, which penetrates the heat conducting plate 611 along the length direction of the box 1. When two heat conducting plates 611 between two adjacent first batteries 311 are connected, heat conducting holes 6112 are formed corresponding to the two heat conducting grooves 6111, and the depth direction of the heat conducting holes 6112 is arranged along the length direction of the box 1. Due to the arrangement of the heat conducting groove 6111 on the heat conducting plate 611, the heat dissipation area can be further increased and the heat dissipation capacity can be improved.

[0071] Reference Figure 7 The first battery 311 is provided with a first through hole 612 on one side facing the heat conducting plate 611, and the heat conducting plate 611 is provided with a second through hole 6113. The first through hole 612 is provided at the bottom of the heat conducting groove 6111, and the first through hole 612 is connected to the second through hole 6113. This allows the heat dissipation airflow in the box 1 to be blown into the first battery 311, thereby improving the heat dissipation capacity of the first battery 311.

[0072] Reference Figure 7 and Figure 8 The heat conducting plate 611 is provided with a closing plate 613, which is located in the corresponding heat conducting groove 6111. The length direction of the closing plate 613 is arranged along the vertical direction, and one side of the closing plate 613 in the width direction is rotatably connected to the groove bottom of the heat conducting groove 6111, and the closing plate 613 closes the corresponding second through hole 6113. The second through hole 6113 is arranged opposite to the corresponding closing plate 613, and the two heat conducting plates 611 are provided with a rotating driving member 614, which is connected to the closing plate 613.

[0073] Driven by the rotating driving member 614 , the two closing plates 613 can open or close the corresponding second through holes 6113 , so that different heat dissipation modes can be switched to meet different requirements.

[0074] In this embodiment, refer to Figure 4 and Figure 7 The two closing plates 613 on the same first battery 311 rotate in the same direction, and when the two closing plates 613 are rotated to open, the two closing plates 613 are arranged in parallel, and an air flow opening 6131 is formed between the closing plates 613 and the bottom of the corresponding heat conduction groove 6111, and there is an air flow opening 6131 arranged in the direction of the corresponding first air inlet hole group 512, and the other air flow opening 6131 is arranged in the direction of the corresponding first heat dissipation hole group 513.

[0075] When the heat dissipation airflow in the box body 1 flows along the length direction of the box body 1, when the heat dissipation airflow passes through the two closed plates 613, the airflow port 6131 generates negative pressure on the side facing the first heat dissipation hole group 513, and the heat in the first battery 311 is sucked out; the airflow port 6131 generates positive pressure on the side facing the first air inlet hole group 512, and the heat dissipation airflow is introduced into the corresponding first battery 311 by the corresponding closed plate 613. This can reduce the speed of the airflow in the first battery 311, thereby improving the heat dissipation efficiency.

[0076] In this embodiment, refer to Figure 7 and Figure 8 The rotating driving member 614 includes a spring piece 6141 , which is disposed between the closing plate 613 and the bottom of the corresponding heat-conducting groove 6111 , and the closing plate 613 and the bottom of the corresponding heat-conducting groove 6111 are both connected to the spring piece 6141 .

[0077] The arrangement of the spring piece 6141 is such that when the closing plate 613 is not subjected to force, the spring piece 6141 contacts the closing plate 613 and moves in a direction away from the bottom of the corresponding heat conducting groove 6111 , and at this time, the closing plate 613 opens the corresponding second through hole 6113 .

[0078] Reference Figure 7 and Figure 8 The rotating driving member 614 also includes a pressing plate 6142 and a magnetic driving member 6143. The pressing plate 6142 is located on the side of the corresponding closing plate 613 away from the first battery 311, and the pressing plate 6142 is slidably connected to the bottom of the heat-conducting groove 6111 and the closing plate 613 along the length direction of the box body 1, and the magnetic driving member 6143 is connected to the pressing plate 6142.

[0079] In this embodiment, the magnetic attraction driving component 6143 includes a permanent magnet and an electromagnet 6144 . The permanent magnet is connected to the pressure plate 6142 . The electromagnet 6144 is arranged on the corresponding heat conducting plate 611 , and the permanent magnet and the corresponding electromagnet 6144 are arranged at intervals along the sliding direction of the pressure plate 6142 .

[0080] Driven by the magnetic drive member 6143, the pressing plate 6142 can slide to the outside of the corresponding closing plate 613, and the pressing plate 6142 will push the corresponding closing plate 613 to fit the bottom of the corresponding heat-conducting groove 6111, that is, the closing plate 613 closes the corresponding second through hole 6113. When the magnetic drive member 6143 is reset, the spring 6141 pushes the pressing plate 6142 to reset, and the closing plate 613 gradually rotates to open, and the closing plate 613 will also push the pressing plate 6142 to slide and reset, so that the second through hole 6113 can be opened.

[0081] In this embodiment, refer to Figure 1 and Figure 3 A plurality of first energy storage components 31 are provided, and the plurality of first energy storage components 31 are arranged in sequence and at intervals along the length direction of the box body 1 .

[0082] Reference Figure 3 and Fig. 9 The first battery 311 is also provided with a second connector 62, which has the same structure as the first connector 61. Two heat conducting plates 611 in the second connector 62 are spaced apart along the length direction of the box body 1, and both sides of the first battery 311 along the length direction of the box body 1 are detachably connected to the corresponding heat conducting plates 611.

[0083] The first connector 61 and the second connector 62 have the same function. The coordinated arrangement of the first connector 61 and the second connector 62 can realize the assembly of the first batteries 311 arranged in a matrix and increase the heat dissipation function of the first batteries 311 arranged in a matrix.

[0084] In this embodiment, refer to Figure 3 and Fig.10 The second energy storage component 32 has the same structure as the first energy storage component 31, and the second energy storage component 32 is arranged in a one-to-one correspondence with the first energy storage component 31. The second energy storage component 32 includes a plurality of second batteries 321, the first battery 311 and the second battery 321 are arranged in a one-to-one correspondence, the second battery 321 is located below the corresponding first battery 311, and a third connecting member 63 is arranged between the second battery 321 and the corresponding first battery 311.

[0085] Reference Figure 3 and Fig.10 The third connecting member 63 has the same structure as the first connecting member 61 , and the two heat conducting plates 611 in the third connecting member 63 are detachably connected to the first battery 311 and the corresponding second battery 321 .

[0086] Reference Figure 3 With the cooperation of the first connecting member 61, the second connecting member 62 and the third connecting member 63, the first batteries 311 arranged in a matrix and the second batteries 321 arranged in a matrix can be assembled into a whole, which makes it easy to install the entire energy storage mechanism 3 into the box body 1 at one time.

[0087] Reference Figure 2 and Fig.11 A clearance hole 43 is opened on the first plate 41, and the clearance hole 43 passes through the second plate 42 in the vertical direction. A plurality of third connecting members 63 are located in the clearance hole 43, and a plurality of third connecting members 63 are located in the insulation space 13 in the vertical direction.

[0088] Reference Fig. 9 In the matrix-arranged first batteries 311 and second batteries 321, first heat dissipation channels 33 are formed between two adjacent rows of first batteries 311 and between two adjacent rows of second batteries 321, and second heat dissipation channels 34 are formed between two adjacent columns of first batteries 311 and between two adjacent columns of second batteries 321.

[0089] Reference Fig. 9 and Fig.11 A plurality of first long plates 44 and a plurality of second long plates 45 are provided on the first plate 41. The first long plates 44 and the second long plates 45 are both located in the clearance holes 43, and the first long plates 44 and the second long plates 45 are both detachably connected to the first plate 41. The plurality of first long plates 44 enclose a plurality of first heat dissipation air channels 33 formed in a plurality of first batteries 311, and the plurality of second long plates 45 enclose a plurality of second heat dissipation air channels 34 formed in a plurality of first batteries 311.

[0090] Similarly, a third long plate 46 and a fourth long plate 47 are provided on the second plate 42. The third long plate 46 and the fourth long plate 47 are both located in the make way hole 43, and the third long plate 46 and the fourth long plate 47 are both detachably connected to the second plate 42. Several third long plates 46 enclose several first heat dissipation ducts 33 formed in several second batteries 321, and several fourth long plates 47 enclose several second heat dissipation ducts 34 formed in several second batteries 321.

[0091] Reference Figure 2 and Fig.11 The opening of the hole 43 makes it easier for a plurality of first batteries 311 and a plurality of second batteries 321 to be assembled into the energy storage mechanism 3 outside the box body 1, and then the energy storage mechanism 3 can be installed into the box body 1 at one time, and the coordinated arrangement of the first long plate 44, the second long plate 45, the third long plate 46 and the fourth long plate 47 prevents the first space 11, the insulation space 13 and the second space 12 from being connected.

[0092] The implementation principle of the embodiment of the present application is: when using a lithium battery energy storage device to discharge or charge the lithium battery energy storage device, the power manager 2 controls the first energy storage component 31 and the second energy storage component 32 to work alternately in sequence, and during this process, the first fan group 511 and the second fan group 514 in the first air-cooled heat dissipation component 51, the second air-cooled heat dissipation component 52 and the third air-cooled heat dissipation component 53 are used alternately in sequence.

[0093] When the working environment of the lithium battery energy storage device is poor, for example, there is a lot of dust or high humidity, the closing plates 613 on all the heat conducting plates 611 are rotated to close the corresponding second through holes 6113. At this time, the inner and outer spaces of the first battery 311 and the second battery 321 are separated, which can protect the first battery 311 and the second battery 321.

[0094] When the working environment of the lithium battery energy storage device is good, the closing plates 613 on all the heat conducting plates 611 are rotated to open the second through holes 6113. At this time, the inner and outer spaces of the first battery 311 are connected, and the inner and outer spaces of the second battery 321 are connected. When the first fan group 511 and the second fan group 514 are working, heat dissipation airflows with different directions are generated in the first battery 311 and the second battery 321, which can improve the heat dissipation efficiency of the first battery 311 and the second battery 321.

[0095] This embodiment also discloses a lithium battery energy storage method, comprising the following steps: The first energy storage assembly 31 , the second energy storage assembly 32 and the heat insulation board group 4 are installed in the box body 1 , and the first energy storage assembly 31 and the second energy storage assembly 32 are electrically connected to the power manager 2 .

[0096] When the lithium battery energy storage device is charged or discharged, the power manager 2 controls the first energy storage component 31 and the second energy storage component 32 to discharge or charge alternately in sequence.

[0097] Specifically, the power management controller obtains the temperature information of the first energy storage component 31 and the second energy storage component 32 in real time, and controls the first energy storage component 31 and the second energy storage component 32 to work alternately according to the temperature information of the first energy storage component 31 and the second energy storage component 32. When the first energy storage component 31 is working, the power manager 2 detects that the temperature of the first energy storage component 31 is too high, stops the first energy storage component 31, and starts the second energy storage component 32 to work; similarly, when the second energy storage component 32 is working, the power manager 2 detects that the temperature of the second energy storage component 32 is too high, stops the second energy storage component 32, and starts the first energy storage component 31 to work.

[0098] The implementation principle of the embodiment of the present application is: through the above method, the possibility of overheating and fire of the energy storage device can be reduced.

[0099] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lithium battery energy storage device, characterized in that: include: A box body (1), wherein a heat insulation board group (4) is arranged inside the box body (1), and the heat insulation board group (4) divides the space inside the box body (1) into a first space (11) and a second space (12) which are independent of each other; A power manager (2), the power manager (2) being arranged on the box (1); The energy storage mechanism (3) comprises a first energy storage component (31) and a second energy storage component (32), wherein the first energy storage component (31) is located in the first space (11), and the second energy storage component (32) is located in the second space (12), and the first energy storage component (31) and the second energy storage component (32) are both independently electrically connected to the power manager (2), and the power manager (2) is used to control the first energy storage component (31) and the second energy storage component (32) to discharge or charge alternately; An active heat dissipation mechanism (5), the active heat dissipation mechanism (5) being arranged in the box body (1), and the active heat dissipation mechanism (5) being used to dissipate heat for the first energy storage component (31) and the second energy storage component (32).

2. A lithium battery energy storage device according to claim 1, characterized in that: The heat-insulating plate group (4) comprises a first plate (41) and a second plate (42), the first plate (41) and the second plate (42) being arranged in parallel and spaced apart, the first space (11) being located on a side of the first plate (41) away from the second plate (42), the second space (12) being located on a side of the second plate (42) away from the first plate (41), and a heat-insulating space (13) being formed between the first plate (41) and the second plate (42); The active heat dissipation mechanism (5) comprises a third air-cooling heat dissipation component (53), and the third air-cooling heat dissipation component (53) is located in the heat-insulating space (13).

3. A lithium battery energy storage device according to claim 1, characterized in that: The active heat dissipation mechanism (5) further comprises a first air-cooling heat dissipation component (51) and a second air-cooling heat dissipation component (52), wherein the first air-cooling heat dissipation component (51) is located in the first space (11), and the second air-cooling heat dissipation component (52) is located in the second space (12).

4. A lithium battery energy storage device according to claim 3, characterized in that: The first air-cooling heat dissipation component (51) comprises a first fan group (511); the box body (1) is provided with a first air inlet group (512) and a first heat dissipation hole group (513) on two opposite side walls along its length direction; the first air inlet group (512) and the first heat dissipation hole group (513) are both connected to the first space (11); The first fan group (511) is arranged on a side wall of the box body (1) on which the first air inlet hole group (512) is opened.

5. A lithium battery energy storage device according to claim 4, characterized in that: The first air-cooling heat dissipation component (51) comprises a second fan group (514); the box body (1) is provided with a second air inlet group (515) and a second heat dissipation hole group (516) on two opposite side walls along its width direction; the second air inlet group (515) and the second heat dissipation hole group (516) are both connected to the second space (12); The second fan group (514) is arranged on a side wall of the box body (1) on which the second air inlet hole group (515) is opened.

6. A lithium battery energy storage device according to claim 1, characterized in that: The first energy storage component (31) comprises a plurality of first batteries (311), wherein the plurality of first batteries (311) are arranged in sequence and spaced apart along the width direction of the box body (1); The first battery (311) is provided with a first connecting member (61), the first connecting member (61) comprising two heat conducting plates (611), the two heat conducting plates (611) being arranged at intervals along the width direction of the box body (1), the first battery (311) being located between the two corresponding heat conducting plates (611), the heat conducting plates (611) being connected to the side walls of the corresponding first battery (311), and the two heat conducting plates (611) between two adjacent first batteries (311) being detachably connected; The heat conducting plate (611) is fitted with a side wall of the first battery (311); a heat conducting groove (6111) is provided on a side of the heat conducting plate (611) facing away from the first battery (311); the heat conducting groove (6111) penetrates the heat conducting plate (611) along the length direction of the box body (1).

7. A lithium battery energy storage device according to claim 6, characterized in that: A first through hole (612) is provided on the side wall of the first battery (311) facing the heat conducting plate (611), a second through hole (6113) is provided at the bottom of the heat conducting groove (6111), and the first through hole (612) is connected to the corresponding second through hole (6113).

8. A lithium battery energy storage device according to claim 7, characterized in that: A closing plate (613) is provided on the heat conducting plate (611), the closing plate (613) is located in the heat conducting groove (6111), the closing plate (613) is rotatably connected to the groove bottom corresponding to the heat conducting groove (6111), a rotating driving member (614) is provided on the heat conducting plate (611), the rotating driving member (614) is connected to the closing plate (613), and the rotating driving member (614) is used to drive the closing plate (613) to rotate to close the corresponding second through hole (6113).

9. A lithium battery energy storage device according to claim 6, characterized in that: A plurality of the first energy storage components (31) are provided, and the plurality of the first energy storage components (31) are arranged in sequence and spaced apart along the length direction of the box body (1); A second connecting member (62) is also provided on the first battery (311); the first connecting member (61) and the second connecting member (62) have the same structure; the two heat conducting plates (611) in the second connecting member (62) are respectively provided on two opposite side walls of the first battery (311) along the length direction of the box body (1).

10. A lithium battery energy storage method, used in a lithium battery energy storage device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Installing the first energy storage component (31), the second energy storage component (32) and the heat insulation board group (4) into the box (1), and electrically connecting the first energy storage component (31) and the second energy storage component (32) to the power manager (2); When the lithium battery energy storage device is charged or discharged, the power manager (2) controls the first energy storage component (31) and the second energy storage component (32) to charge or discharge alternately.

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