Lithium battery pack energy storage equipment and energy storage system

Abstract

The invention belongs to the technical field of lithium battery packs, and particularly relates to lithium battery pack energy storage equipment and an energy storage system.The lithium battery pack energy storage equipment comprises a container, a first barrier plate and a second barrier plate are sequentially arranged on the inner side of the container, and a dehumidification mechanism is fixedly arranged at the position, close to the first barrier plate, of the container; a control system is fixedly arranged at the position, close to the second barrier plate, of the container, a plurality of lithium battery racks are fixedly installed on the inner side of the container and located between the first barrier plate and the second barrier plate, and a plurality of loading grooves are formed in the lithium battery racks. Lithium battery packs in a charging state and a discharging state are arranged in the same space and are distributed in a staggered manner, and because heat is in the same space, air with high heat flows into an air environment with low heat, so that the space around the lithium battery packs is more balanced, heat gathering is reduced, and the service life of the lithium battery packs is prolonged. Therefore, the safety of the lithium battery pack energy storage equipment can be greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery packs, and in particular relates to a lithium battery pack energy storage device and an energy storage system. Background Art

[0002] With the transformation of the global energy structure and the rapid development of renewable energy, energy storage technology has become a key link in solving the mismatch between energy supply and demand and improving energy utilization efficiency. Lithium batteries, with their high energy density, long cycle life, environmental protection and pollution-free advantages, have become one of the mainstream technologies in the current energy storage field.

[0003] Lithium batteries are extremely sensitive to humidity. Excessive humidity can cause dilution of the electrolyte inside the battery and corrosion of metal parts, which in turn affects the performance and life of the battery.

[0004] In traditional technology, the energy storage and release of lithium battery packs are divided into two different placement spaces. Inside these two spaces, the lithium battery in the charging state has less heat to ensure the safe use of the lithium battery, while in the other space, the lithium battery in the discharging state will generate greater heat. The rapid accumulation of heat and overheating will cause the electrolyte inside the lithium battery to expand and decompose, produce a large amount of gas, and thus increase the pressure inside the battery. This increase in pressure can easily cause safety accidents such as battery combustion and explosion, posing a serious threat to personal and property safety. Therefore, in response to the above problems, a lithium battery pack energy storage device and energy storage system are proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a lithium battery pack energy storage device and an energy storage system.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a lithium battery pack energy storage device and energy storage system described in the present invention include a container, a first baffle plate and a second baffle plate are sequentially arranged on the inner side of the container, a dehumidification mechanism is fixedly arranged on the container and close to the first baffle plate, a control system is fixedly arranged on the container and close to the second baffle plate, a plurality of lithium battery racks are fixedly installed on the inner side of the container and between the first baffle plate and the second baffle plate, a plurality of loading slots are opened on the lithium battery rack, a first fixing rack and a second fixing rack are sequentially arranged on the loading slots, a plurality of first loading seats are fixedly arranged on the first fixing rack, a plurality of second loading seats are fixedly arranged on the second fixing rack, a plurality of third wiring bars are arranged on the outer side of the first fixing rack, a plurality of fourth wiring bars are arranged on the outer side of the second fixing rack, lithium battery packs are arranged on the first loading seat and the second loading seat, and a first wiring bar and a second wiring bar are sequentially installed on the container and on both sides of the lithium battery rack;

[0007] The dehumidification mechanism includes a dehumidification cabinet fixedly mounted on the container and close to the first baffle plate, an air inlet box is fixedly mounted on one side of the dehumidification cabinet close to the lithium battery rack, a circulation plate is fixedly mounted on the air inlet box, a plurality of circulation holes are opened on the circulation plate, a plurality of air inlet pipes connected to the circulation holes are fixedly mounted on the air inlet box and on the inner side of the circulation plate, the air inlet pipe is an S-shaped structure as a whole, and a plurality of first spoilers and second spoilers are sequentially mounted on the inner side thereof, and the first spoilers and the second spoilers are staggeredly distributed.

[0008] Preferably, a connection box is fixedly arranged on the top of the container, and the plurality of the first connection bars and the plurality of the second connection bars all extend to the inner side of the connection box.

[0009] Preferably, a closed front door is provided on the container and located outside the control system, and a closed side door is provided on the container and located near the lithium battery rack.

[0010] Preferably, the dehumidification mechanism also includes a fan group fixedly arranged inside the dehumidification cabinet and close to the air inlet box, a condenser is fixedly arranged on the dehumidification cabinet and located on the side of the fan group away from the air inlet box, an evaporator is fixedly arranged on the condenser, and an expansion valve and a compressor are also arranged in sequence inside the dehumidification cabinet, a plurality of connecting pipes are fixedly connected to the compressor, and the plurality of connecting pipes are respectively connected to the expansion valve and the condenser.

[0011] Preferably, a water storage tank is fixedly arranged inside the dehumidification cabinet and above the compressor, and the water storage tank is connected to the condenser through a connecting pipe.

[0012] Preferably, a shutter is provided on the dehumidification cabinet and located on the outside of the air inlet box, and a temperature sensor is fixedly provided on the outside of the dehumidification cabinet and located below the shutter.

[0013] Preferably, the lithium battery pack includes loading sleeves respectively arranged on the first loading seat and the second loading seat, the lithium batteries are plugged into the loading sleeves, and the plurality of lithium batteries are electrically connected to the first wiring block and the second wiring block respectively through the third wiring block and the fourth wiring block.

[0014] Preferably, the first loading seat and the second loading seat are cross-distributed.

[0015] Preferably, a lithium battery energy storage system comprises:

[0016] A lithium battery pack, the lithium battery pack comprising a first allocated lithium battery pack and a second allocated lithium battery pack, the first allocated lithium battery pack and the second allocated lithium battery pack are both capable of storing and releasing energy, and when the first allocated lithium battery pack stores energy, the second allocated lithium battery pack is used to release energy; when the first allocated lithium battery pack releases energy, the second allocated lithium battery pack is used to store energy;

[0017] A control system, the control system comprising a DC cabinet for collecting current and a DC busbar for electrical connection;

[0018] An energy storage distribution system, the energy storage distribution system is used to control the first allocation lithium battery group and the second allocation lithium battery group to store and release energy, so that the first allocation lithium battery group and the second allocation lithium battery group store and release energy alternately;

[0019] A dehumidification mechanism is used for dehumidification inside a lithium battery pack energy storage system.

[0020] Preferably, the first allocated lithium battery group and the second allocated lithium battery group are staggeredly distributed to achieve uniform heat distribution during the heat generation process of the entire lithium battery group energy storage system.

[0021] Beneficial effects of the present invention:

[0022] The present invention provides a lithium battery pack energy storage device and an energy storage system. The lithium battery packs in charging and discharging states are placed in the same space and are staggeredly distributed. Since the heat is in the same space, the air with high heat will flow to the air environment with low heat, so that the space around the lithium battery pack is more balanced, and the targeted accumulation of heat is reduced, thereby greatly improving the safety of the lithium battery pack energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In the attached picture:

[0025] Figure 1 This is a schematic diagram of the container structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the container structure of the present invention. Figure 2 ;

[0027] Figure 3 It is a structural schematic diagram of the connection box in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the lithium battery rack in the present invention;

[0029] Figure 5 It is a structural schematic diagram of the loading sleeve in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the first loading seat in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the dehumidification cabinet in the present invention;

[0032] Figure 8 It is a schematic diagram of the internal structure of the dehumidification cabinet in the present invention;

[0033] Fig. 9 It is a structural schematic diagram of the air inlet box in the present invention;

[0034] Fig.10 It is a structural schematic diagram of the air inlet duct in the present invention.

[0035] Legend:

[0036] 1. Container; 2. Closed front door; 3. Connection box; 4. Closed side door; 5. First baffle plate; 6. Second baffle plate; 7. Dehumidification mechanism; 8. Control system; 9. First terminal block; 10. Second terminal block; 11. Lithium battery rack; 12. Loading slot; 13. First fixed frame; 14. Second fixed frame; 15. Third terminal block; 16. Fourth terminal block; 17. First loading seat; 18. Loading sleeve; 19. Lithium battery; 20. Second loading seat; 21. Dehumidification cabinet; 22. Fan unit; 23. Condenser; 24. Evaporator; 25. Expansion valve; 26. Connecting pipe; 27. Compressor; 28. Temperature sensor; 29. ​​Shutters; 30. Air inlet box; 31. Water storage tank; 32. Air inlet pipe; 33. First spoiler; 34. Second spoiler; 35. Circulation plate; 36. Circulation hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Specific examples are given below.

[0039] See also Figure 1-Figure 10The present invention provides a lithium battery pack energy storage device and energy storage system, including a container 1, wherein a first baffle plate 5 and a second baffle plate 6 are sequentially arranged on the inner side of the container 1, a dehumidification mechanism 7 is fixedly arranged on the container 1 and near the first baffle plate 5, a control system 8 is fixedly arranged on the container 1 and near the second baffle plate 6, a plurality of lithium battery racks 11 are fixedly installed on the inner side of the container 1 and between the first baffle plate 5 and the second baffle plate 6, a plurality of loading slots 12 are opened on the lithium battery rack 11, a first fixing rack 13 and a second fixing rack 14 are sequentially arranged on the loading slots 12, a plurality of first loading seats 17 are fixedly arranged on the first fixing rack 13, a plurality of second loading seats 20 are fixedly arranged on the second fixing rack 14, a plurality of third wiring banks 15 are arranged on the outer side of the first fixing rack 13, a plurality of fourth wiring banks 16 are arranged on the outer side of the second fixing rack 14, lithium battery packs are arranged on the first loading seat 17 and the second loading seat 20, and a first wiring bank 9 and a second wiring bank 10 are sequentially installed on the container 1 and on both sides of the lithium battery rack 11;

[0040] The dehumidification mechanism 7 includes a dehumidification cabinet 21 fixedly arranged on the container 1 and close to the first baffle plate 5. An air inlet box 30 is fixedly arranged on the side of the dehumidification cabinet 21 close to the lithium battery rack 11. A circulation plate 35 is fixedly installed on the air inlet box 30. A plurality of circulation holes 36 are opened on the circulation plate 35. A plurality of air inlet pipes 32 connected to the circulation holes 36 are fixedly arranged on the air inlet box 30 and located on the inner side of the circulation plate 35. The air inlet pipe 32 is an S-shaped structure as a whole, and a plurality of first spoilers 33 and second spoilers 34 are sequentially installed on the inner side thereof. The first spoilers 33 and the second spoilers 34 are staggeredly distributed.

[0041] When the device is in use, the container 1 is used to load the lithium battery pack, and the device can be moved on the engineering vehicle when loaded, thereby increasing the use range of the device. The first baffle plate 5 and the second baffle plate 6 are sequentially arranged on the inner side of the container 1, so that a safety zone is formed on the inner side of the container 1 and on the inner side of the first baffle plate 5 and the second baffle plate 6. The lithium batteries in this safety zone can ensure their safety to prevent accidents during the use of the device. An intelligent fire protection system is arranged inside the safety zone, which is a mature prior art and will not be described in detail herein. The dehumidification mechanism 7 fixedly arranged on the container 1 and close to the first baffle plate 5 is used for dehumidification work inside the device. Specifically, the temperature of the lithium battery will rise during its operation. When the temperature difference between day and night is large, water droplets will condense in the interior of the device due to the temperature difference and be adsorbed on the lithium battery or its electrical connection part, which may easily cause a short circuit of the lithium battery and cause an electrical fire. The dehumidification mechanism inside the device can keep the interior of the device in a dry state at all times, thereby ensuring the safe use of the lithium battery.

[0042] The control system 8 fixedly arranged on the container 1 and near the second baffle plate 6 is used to control the energy storage and release of the lithium battery pack. The multiple lithium battery racks 11 fixedly installed on the inner side of the container 1 and between the first baffle plate 5 and the second baffle plate 6 are used to cooperate with the multiple loading slots 12 opened on the lithium battery rack 11 to load the first fixing rack 13 and the second fixing rack 14. The first fixing rack 13 and the second fixing rack 14 in the device are both provided with multiple groups, and are staggered. The first fixing rack 13 and the second fixing rack 14 sequentially arranged on the loading slots 12 are used to load the lithium battery pack, the multiple first loading seats 17 fixedly arranged on the first fixing rack 13 are used to load the loading sleeve 18, and the multiple second loading seats 20 fixedly arranged on the second fixing rack 14 are also used to load the loading sleeve 18 is loaded, a plurality of third wiring bars 15 arranged on the outer side of the first fixing frame 13 are used for electrical connection of the lithium battery group on the first loading seat 17 to realize energy storage and energy release of the lithium battery group, a plurality of fourth wiring bars 16 arranged on the outer side of the second fixing frame 14 are used for electrical connection of the lithium battery group on the second loading seat 20 to realize energy storage and energy release of the lithium battery group, the lithium battery groups arranged on both the first loading seat 17 and the second loading seat 20 are used for storage and release of electric energy, the first wiring bar 9 and the second wiring bar 10 sequentially installed on the container 1 and located on both sides of the lithium battery rack 11 are used for electrical connection of the third wiring bar 15 and the fourth wiring bar 16 respectively, and the staggered first loading seat 17 and the second loading seat 20 separate the lithium battery groups on the two sides;

[0043] Lithium battery packs generate heat when storing energy, i.e. charging, and releasing energy, i.e. discharging. However, the heat generated during discharge is usually higher than that during charging. Firstly, lithium batteries involve chemical reactions during the charging and discharging processes. These reactions are accompanied by energy conversion, and therefore generate heat. During charging, the positive electrode material of the lithium battery is oxidized, and lithium ions move to the negative electrode through the electrolyte and are reduced by the negative electrode material. Heat is released during this process. During discharging, the process is the opposite, but heat is also generated. By staggeredly distributing the first loading seat 17 and the second loading seat 20, it is possible to ensure that the heat accumulation inside the container 1 is more uniform. In traditional technology, the energy storage and release of lithium battery packs are divided into two different placement spaces. Inside these two spaces, the lithium batteries in a charged state are placed in the storage space. The smaller the heat of the battery, the safe use of the lithium battery can be ensured. In another space, the lithium battery in the discharge state will generate a large amount of heat. The rapid accumulation of heat and overheating will cause the electrolyte inside the lithium battery to expand and decompose, generating a large amount of gas, thereby increasing the pressure inside the battery. This increase in pressure is likely to cause safety accidents such as battery combustion and explosion, posing a serious threat to personal and property safety. Through this device, the lithium battery packs in the charging and discharging states are placed in the same space and are staggered. Since the heat is in the same space, the air with high heat will flow to the air environment with low heat, thereby making the space around the lithium battery pack more balanced and reducing the targeted accumulation of heat, thereby greatly improving the safety of the lithium battery pack energy storage equipment;

[0044] The air inlet box 30 fixedly arranged on one side of the dehumidification cabinet 21 close to the lithium battery rack 11 is used to slow down the flow of air inside the device, so that the air inside the container 1 extends its flow path after entering the dehumidification cabinet 21, thereby ensuring that the dehumidification cabinet 21 improves the dehumidification effect of the hot air in the container 1;

[0045] By means of the circulation plate 35 fixedly installed on the air inlet box 30 and the multiple circulation holes 36 opened on the circulation plate 35, the air in the container 1 enters into the air inlet pipe 32 through the circulation holes 36. The multiple air inlet pipes 32 connected to the circulation holes 36 are fixedly arranged on the air inlet box 30 and located on the inner side of the circulation plate 35, which are used to lengthen the flow path of the air in the dehumidifier cabinet 21, so that the air stays in the dehumidifier cabinet 21 longer, thereby improving the dehumidification effect. The air inlet pipe 32 has an S-shaped structure as a whole, and cooperates with and is sequentially installed on the inner side of the multiple first spoilers 33 and second spoilers 34, so as to extend the flow path of the air entering the dehumidifier cabinet 21.

[0046] Further, such as Figure 1 As shown, a connection box 3 is fixedly arranged on the top of the container 1 , and a plurality of first connection bars 9 and a plurality of second connection bars 10 all extend to the inner side of the connection box 3 .

[0047] When the device is in use, the connection box 3 fixedly arranged on the top of the container 1 is used for loading the first terminal block 9 and the second terminal block 10, and the control system 8 is connected to the inside of the connection box 3 through wires, and is respectively connected to the first terminal block 9 and the second terminal block 10, thereby realizing the energy storage and release distribution of the device.

[0048] Further, such as Figure 1 As shown, a closed front door 2 is provided on the container 1 and located outside the control system 8 , and a closed side door 4 is provided on the container 1 and located near the lithium battery rack 11 .

[0049] When the device is in use, a closed front door 2 provided on the container 1 and located outside the control system 8 is used for staff to enter the interior of the device for maintenance, and a closed side door 4 provided on the container 1 and close to the lithium battery rack 11 is used to directly open or close the container 1 from the side of the device, thereby facilitating the loading and maintenance of the lithium battery pack.

[0050] Further, such as Figure 7-8 As shown, the dehumidification mechanism also includes a fan unit 22 fixedly arranged on the inner side of the dehumidification cabinet 21 and close to the air inlet box 30, a condenser 23 is fixedly arranged on the dehumidification cabinet 21 and located on the side of the fan unit 22 away from the air inlet box 30, an evaporator 24 is fixedly arranged on the condenser 23, an expansion valve 25 and a compressor 27 are also arranged in sequence on the inner side of the dehumidification cabinet 21, a plurality of connecting pipes 26 are fixedly connected to the compressor 27, and the plurality of connecting pipes 26 are respectively connected to the expansion valve 25 and the condenser 23.

[0051] When the device is in use, the fan unit 22 fixedly arranged on the inner side of the dehumidification cabinet 21 and close to the air inlet box 30 is used to blow air through the condenser 23 and the evaporator 24 to promote the heat exchange process of the device. The condenser 23 fixedly arranged on the dehumidification cabinet 21 and located on the side of the fan unit 22 away from the air inlet box 30 is the place where the refrigerant releases heat. Here the refrigerant changes from gas to liquid and releases the heat absorbed in the evaporator at the same time. The evaporator 24 fixedly arranged on the condenser 23 is the place where the refrigerant evaporates. It absorbs heat and moisture from the air flowing through to make the air dry. The expansion valve 25 arranged on the inner side of the dehumidification cabinet 21 is connected between the compressor 27 and the evaporator 24. It adjusts the flow rate of the refrigerant to ensure that the refrigerant evaporates at an appropriate pressure and rate in the evaporator 24. The compressor 27 arranged on the inner side of the dehumidification cabinet 21 is the core component of the dehumidification of the device. It is responsible for compressing the refrigerant and circulating it in the system, thereby absorbing heat and moisture in the air to achieve dehumidification inside the device. A plurality of connecting pipes 26 fixedly connected to the compressor 27 are used for pipe connection inside the dehumidification cabinet 21, so that the refrigerant circulates to achieve dehumidification of the moisture in the control.

[0052] Further, such as Figure 7-9 As shown, a water storage tank 31 is fixedly installed inside the dehumidification cabinet 21 and above the compressor 27 , and the water storage tank 31 is connected to the condenser 23 through a connecting pipe 26 .

[0053] When the device is in use, a water storage tank 31 fixedly arranged inside the dehumidification cabinet 21 and above the compressor 27 is used to collect moisture in the air during the dehumidification process of the dehumidification cabinet 21 to prevent water from remaining inside the dehumidification cabinet 21 or the container 1 and affecting the safe operation of the device. The water storage tank 31 is connected to the condenser 23 through a connecting pipe 26.

[0054] Further, such as Figure 8 As shown, a shutter 29 is provided on the dehumidification cabinet 21 and located on the outside of the air inlet box 30 , and a temperature sensor 28 is fixedly provided on the outside of the dehumidification cabinet 21 and located below the shutter 29 .

[0055] When the device is in use, the shutter 29 arranged on the dehumidification cabinet 21 and located on the outside of the air inlet box 30 is used as the air inlet, and the temperature sensor 28 fixedly arranged on the outside of the dehumidification cabinet 21 and below the shutter 29 is used to detect the ambient temperature inside the device. As the temperature rises, the dehumidification power of the dehumidification mechanism 7 inside the device is increased.

[0056] Further, such as Figure 5-6 As shown, the lithium battery pack includes a loading sleeve 18 respectively arranged on the first loading seat 17 and the second loading seat 20, and a lithium battery 19 is inserted into the loading sleeve 18. The multiple lithium batteries 19 are electrically connected to the first wiring bar 9 and the second wiring bar 10 through the third wiring bar 15 and the fourth wiring bar 16 respectively.

[0057] When the device is in use, the loading sleeves 18 respectively arranged on the first loading seat 17 and the second loading seat 20 are used to load the lithium batteries 19, and the loading sleeves 18 are made of insulating material. The lithium batteries 19 plugged into the loading sleeves 18 are used as energy storage and energy release carriers for the device. Multiple lithium batteries 19 are electrically connected to the first terminal block 9 and the second terminal block 10 through the third terminal block 15 and the fourth terminal block 16, respectively, to realize the process of electrical energy storage and energy release.

[0058] Further, such as Figure 6 As shown, the first loading seat 17 and the second loading seat 20 are cross-distributed.

[0059] When the device is used, the first loading seat 17 and the second loading seat 20 are cross-distributed, and the lithium battery packs on the two are divided into two battery packs for energy storage and energy release. During operation, the first loading seat 17 and the second loading seat 20 are staggered to ensure that the heat accumulation inside the container 1 is more uniform. In traditional technology, the energy storage and energy release of the lithium battery pack are divided into two different placement spaces. Inside these two spaces, the lithium battery in the charging state has less heat to ensure the safe use of the lithium battery, while in the other space, the lithium battery in the discharging state will generate greater heat. Rapid accumulation of heat and overheating will cause the electrolyte inside the lithium battery to expand and decompose, produce a large amount of gas, thereby increasing the pressure inside the battery. This increase in pressure can easily cause safety accidents such as battery combustion and explosion, posing a serious threat to personal and property safety. Through the device, the lithium battery packs in the charging and discharging states are placed in the same space and staggered. Since the heat is in the same space, the air with high heat will flow to the air environment with low heat, thereby making the space around the lithium battery pack more balanced.

[0060] Further, such as Figure 1-10 As shown, a lithium battery pack energy storage system includes:

[0061] A lithium battery pack, the lithium battery pack includes a first allocated lithium battery pack and a second allocated lithium battery pack, both of which can realize energy storage and energy release, and when the first allocated lithium battery pack stores energy, the second allocated lithium battery pack is used for energy release; when the first allocated lithium battery pack releases energy, the second allocated lithium battery pack is used for energy storage;

[0062] A control system 8, the control system includes a DC cabinet for collecting current and a DC busbar for electrical connection;

[0063] An energy storage distribution system, the energy storage distribution system is used to control the first allocation lithium battery group and the second allocation lithium battery group to store and release energy, so that the first allocation lithium battery group and the second allocation lithium battery group store and release energy alternately;

[0064] Dehumidification mechanism 7, dehumidification mechanism 7 is used for dehumidification inside the lithium battery pack energy storage system.

[0065] When the device is in use, the system includes two allocated lithium battery groups, namely the first allocated lithium battery group and the second allocated lithium battery group. Both of the two lithium battery groups have the functions of energy storage and energy release. Their working modes are to back up each other and alternately operate to improve the stability and service life of the system. The first allocated lithium battery group and the second allocated lithium battery group work alternately. When one battery group is storing energy, the other battery group is releasing energy, and vice versa. This ensures that during the continuous operation of the system, there is always one battery group in working condition, thereby improving the reliability and continuous power supply capability of the system.

[0066] The DC cabinet is used to collect and distribute the current generated by the lithium battery pack to ensure the effective transmission of electric energy. The DC busbar is an electrical connection component that connects each battery pack and the DC cabinet to ensure the efficient flow of current.

[0067] The energy storage distribution system uses intelligent control algorithms to reasonably allocate energy storage and release tasks according to system requirements and battery pack status. This allocation method can improve the utilization rate of battery packs, extend battery life, and ensure the efficiency of system operation;

[0068] Lithium batteries are prone to corrosion and performance degradation in humid environments. The dehumidification mechanism can effectively reduce the humidity inside the system and ensure the stable operation of the battery pack. By maintaining appropriate ambient humidity, the dehumidification mechanism helps to improve the service life and safety of the lithium battery pack.

[0069] Furthermore, the first allocated lithium battery group and the second allocated lithium battery group are staggeredly distributed to achieve uniform heat distribution during the heating process of the entire lithium battery group energy storage system. When the device is used, the lithium battery will generate heat during the charging and discharging process. If the heat cannot be dissipated in a timely and effective manner, it will cause the battery temperature to rise. High temperature will affect the performance of the lithium battery and may even cause battery damage, shortened life or safety problems. Uniform heat distribution helps maintain the temperature balance of each battery cell in the battery pack, thereby improving the stability and safety of the entire system;

[0070] The first allocated lithium battery pack and the second allocated lithium battery pack are not simply arranged side by side, but are arranged in a staggered or spaced manner. This staggered layout can increase the air circulation space between the battery packs, which is helpful for the transfer and dissipation of heat. The staggered distribution allows the heat between the battery packs to be more efficiently transferred through natural convection or forced ventilation. When a battery pack generates heat during energy release, the staggered design helps to transfer the heat to the surrounding air or cooling system rather than directly to the adjacent battery packs. This can reduce the temperature rise of adjacent battery packs and avoid local overheating.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A lithium battery energy storage device, comprising a container (1), characterized in that: A first baffle plate (5) and a second baffle plate (6) are sequentially arranged on the inner side of the container (1); a dehumidification mechanism (7) is fixedly arranged on the container (1) and close to the first baffle plate (5); a control system (8) is fixedly arranged on the container (1) and close to the second baffle plate (6); a plurality of lithium battery racks (11) are fixedly installed on the inner side of the container (1) and between the first baffle plate (5) and the second baffle plate (6); a plurality of loading slots (12) are provided on the lithium battery rack (11); and a first fixing rack (13) is sequentially arranged on the loading slots (12). ) and a second fixing frame (14), a plurality of first loading seats (17) being fixedly arranged on the first fixing frame (13), a plurality of second loading seats (20) being fixedly arranged on the second fixing frame (14), a plurality of third wiring bars (15) being arranged on the outer side of the first fixing frame (13), a plurality of fourth wiring bars (16) being arranged on the outer side of the second fixing frame (14), a lithium battery pack being arranged on the first loading seat (17) and the second loading seat (20), and a first wiring bar (9) and a second wiring bar (10) being sequentially installed on the container (1) and located on both sides of the lithium battery frame (11); The dehumidification mechanism (7) comprises a dehumidification cabinet (21) fixedly arranged on the container (1) and close to the first baffle plate (5); an air inlet box (30) is fixedly arranged on one side of the dehumidification cabinet (21) close to the lithium battery rack (11); a circulation plate (35) is fixedly arranged on the air inlet box (30); a plurality of circulation holes (36) are provided on the circulation plate (35); a plurality of air inlet pipes (32) connected to the circulation holes (36) are fixedly arranged on the air inlet box (30) and located on the inner side of the circulation plate (35); the air inlet pipe (32) is an S-shaped structure as a whole, and a plurality of first spoilers (33) and second spoilers (34) are sequentially installed on the inner side thereof; the first spoilers (33) and the second spoilers (34) are arranged in a staggered manner.

2. A lithium battery pack energy storage device according to claim 1, characterized in that: A connection box (3) is fixedly arranged on the top of the container (1), and a plurality of the first connection bars (9) and a plurality of the second connection bars (10) all extend to the inner side of the connection box (3).

3. A lithium battery pack energy storage device according to claim 1, characterized in that: A closed front door (2) is provided on the container (1) and is located outside the control system (8), and a closed side door (4) is provided on the container (1) and is located near the lithium battery rack (11).

4. A lithium battery energy storage device according to claim 1, characterized in that: The dehumidification mechanism further comprises a fan unit (22) fixedly arranged inside the dehumidification cabinet (21) and close to the air inlet box (30); a condenser (23) is fixedly arranged on the dehumidification cabinet (21) and located on the side of the fan unit (22) away from the air inlet box (30); an evaporator (24) is fixedly arranged on the condenser (23); an expansion valve (25) and a compressor (27) are also arranged in sequence inside the dehumidification cabinet (21); a plurality of connecting pipes (26) are fixedly connected to the compressor (27); and the plurality of connecting pipes (26) are respectively connected to the expansion valve (25) and the condenser (23).

5. A lithium battery pack energy storage device according to claim 4, characterized in that: A water storage tank (31) is fixedly arranged inside the dehumidification cabinet (21) and above the compressor (27), and the water storage tank (31) is connected to the condenser (23) via a connecting pipe (26).

6. A lithium battery energy storage device according to claim 1, characterized in that: A shutter (29) is provided on the dehumidification cabinet (21) and located outside the air inlet box (30), and a temperature sensor (28) is fixedly provided outside the dehumidification cabinet (21) and located below the shutter (29).

7. A lithium battery pack energy storage device according to claim 1, characterized in that: The lithium battery pack comprises a loading sleeve (18) respectively arranged on the first loading seat (17) and the second loading seat (20), wherein the loading sleeve (18) is plugged with a lithium battery (19), and the plurality of lithium batteries (19) are respectively electrically connected to the first wiring block (9) and the second wiring block (10) through the third wiring block (15) and the fourth wiring block (16).

8. A lithium battery energy storage device according to claim 1, characterized in that: The first loading seat (17) and the second loading seat (20) are arranged crosswise.

9. A lithium battery pack energy storage system, applied to a lithium battery pack energy storage device as claimed in any one of claims 1 to 7, characterized in that: include: A lithium battery pack, the lithium battery pack comprising a first allocated lithium battery pack and a second allocated lithium battery pack, the first allocated lithium battery pack and the second allocated lithium battery pack are both capable of storing and releasing energy, and when the first allocated lithium battery pack stores energy, the second allocated lithium battery pack is used to release energy; when the first allocated lithium battery pack releases energy, the second allocated lithium battery pack is used to store energy; A control system (8), the control system comprising a DC cabinet for collecting current and a DC busbar for electrical connection; An energy storage distribution system, the energy storage distribution system is used to control the first allocation lithium battery group and the second allocation lithium battery group to store and release energy, so that the first allocation lithium battery group and the second allocation lithium battery group store and release energy alternately; A dehumidification mechanism (7), wherein the dehumidification mechanism (7) is used for dehumidifying inside a lithium battery pack energy storage system.

10. A lithium battery energy storage system according to claim 9, characterized in that: The first allocated lithium battery group and the second allocated lithium battery group are staggeredly distributed to achieve uniform heat distribution during the heat generation process of the entire lithium battery group energy storage system.

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