Submerged liquid-cooled industrial energy storage device

Abstract

The application discloses an immersed liquid cooling industrial and commercial energy storage device and relates to the technical field of battery packs.The immersed liquid cooling industrial and commercial energy storage device comprises a first partition plate and a second partition plate which are filled in the gaps between the battery cells, a liquid discharge cavity and a liquid inlet cavity which are located at opposite ends in a sealed box body, and the liquid discharge cavity and the liquid inlet cavity can only be connected with each other through the gaps between the battery cells.The energy storage device can uniformly, stably and with low energy consumption heat-exchange and cool the battery cells in each region.The immersed liquid cooling industrial and commercial energy storage device can efficiently heat-exchange the battery cells in the mode of immersing the battery cells in cooling liquid and in cooperation with the circulation effect of the cooling liquid.The technical problem that the cooling efficiency of the energy storage device in the prior art is low due to the small temperature difference between the cooling liquid and the battery cells can be avoided.The heat-exchange efficiency between the cooling liquid and the battery cells is improved in the mode of interfering with the flow law of the cooling liquid by designing the flow blocking piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery packs, in particular to an immersion liquid cooling industrial and commercial energy storage device. BACKGROUND

[0002] Cooling the cells in the industrial and commercial energy storage device can improve the cycle life of the cells and increase the charge and discharge depth. The existing immersion energy storage device cooling technology only uses the technical solution of immersing the cells in the cooling liquid to achieve the cooling effect. However, there is a technical problem of low cooling efficiency due to small temperature difference between the cooling liquid and the cells during long-term use.

[0003] Chinese invention patent with publication number CN118943561A: an immersion liquid cooling energy storage device, discloses one or more battery packs containing cell modules and cooling liquid, the cell modules are completely immersed in the cooling liquid; the liquid inlet channel is located at the bottom of the battery pack for introducing the cooling liquid; the liquid outlet channel is located at the upper part of the battery pack for discharging the cooling liquid; the liquid cooling unit is used to provide the circulating power of the cooling liquid; the control system is used to adjust the output power of the liquid cooling unit. The cell modules are immersed in the cooling liquid in the battery pack, and the heat exchange is generated by the contact and flow of the cooling liquid with the surface of the cells, and the heat of the cells is taken away during the flow process to achieve the purpose of heat dissipation.

[0004] The technical solution of the above-mentioned invention patent uses the cooling liquid to continuously flow from the gap between adjacent cells to continuously cool and cool the cells, which can improve the stability of the cooling effect of the cells and improve the cooling efficiency. However, when using this technical solution, the cooling liquid flow efficiency in the gap between adjacent cells at different positions is easily different. The main influencing factors of the difference are: the distance between the liquid inlet and the gap between adjacent cells; the liquid pressure of the cooling liquid near the liquid inlet is large, and the liquid pressure of the cooling liquid far from the liquid inlet is small, which will cause a large difference in the cooling efficiency of the cells in each region of the energy storage device. To solve this technical problem, those skilled in the art can think of ways to greatly improve the cooling liquid pumping efficiency to reduce the hydraulic pressure difference between each region of the energy storage device. However, this will cause two problems: 1. The cooling liquid used for heat exchange does not need to maintain a high flow rate, resulting in energy waste, and 2. The high flow rate of the cooling liquid will quickly cause wear and tear to the cells or other components inside the energy storage device.

[0005] The immersion energy storage device in the prior art cannot uniformly, stably and lowly consume energy to heat and cool the cells in each region inside, so there is an urgent need for an immersion liquid cooling industrial and commercial energy storage device to solve the problems in the prior art. SUMMARY

[0006] The technical scheme of the application is to provide an immersed liquid cooling industrial and commercial energy storage device to solve the technical problem that the prior art immersed energy storage device cannot uniformly, stably and with low energy consumption heat exchange and cool the battery cells in each region.

[0007] To achieve the above object, the application provides the following technical scheme: an immersed liquid cooling industrial and commercial energy storage device, comprising a support frame, battery cells arranged in an array inside the support frame, a sealed box body sealing the support frame, a gap between adjacent battery cells, the sealed box body comprising a front sealing plate and a rear sealing plate in opposite positions and four side sealing plates spliced to form the sealed box body, the front sealing plate being provided with an overflow port, the rear sealing plate being provided with a liquid inlet port, the sealed box body being filled with cooling liquid, the overflow port and the liquid inlet port being in communication with an external liquid cooling device, the external liquid cooling device being capable of cooling the circulating cooling liquid to ensure the continuous low temperature of the cooling liquid, the liquid cooling device being a prior art and not being described in detail here, the external liquid cooling device pumping the cooling liquid into the sealed box body, and the cooling liquid overflowing from the overflow port to the outside, thereby carrying away the heat of the battery cells and achieving the self-cooling effect of the battery cells; the front sealing plate is further provided with a wiring port, and a wire penetrates through the wiring port as a power transmission channel of the energy storage device, the wire filling the wiring port to achieve a sealing effect; the energy storage device further comprises a first partition plate and a second partition plate sealingly filled in the gap between the battery cells, a liquid discharge chamber and a liquid inlet chamber located at opposite ends inside the sealed box body, and the liquid discharge chamber and the liquid inlet chamber being in communication with each other only through the gap between the battery cells; the first partition plate and the second partition plate are located at the end of the gap between the battery cells close to the liquid inlet chamber, the first partition plate and the second partition plate are both provided with a mounting hole penetratingly formed thereon, a voltage stabilizing assembly is mounted in the mounting hole, the voltage stabilizing assembly comprises a first pipe mounted in the mounting hole, the first pipe is fixedly provided with a mounting ring at the end away from the liquid inlet chamber, a plurality of flow limiting springs are annularly arranged on the side wall of the mounting ring close to the liquid inlet chamber, the flow limiting springs are arc-shaped springs with concave surfaces facing the axis of the mounting ring, and the bending effect of the flow limiting springs under the impact of the cooling liquid flow is enhanced;

[0008] Adopting the technical scheme, the cooling liquid is pumped into the liquid inlet cavity from the liquid inlet, and then flows through the first pipe fitting, the flow limiting elastic sheet, the mounting ring, and the liquid outlet cavity in sequence, and finally overflows from the overflow port. When the cooling liquid flows through the flow limiting elastic sheet, the flow limiting elastic sheet is impacted by the flow of the cooling liquid, the free ends of the flow limiting elastic sheet are close to each other, and the limit of the mutual approach is that the side walls of the flow limiting elastic sheet abut against each other. At this time, only the flow-through hole formed by the free ends of all the flow limiting elastic sheets can supply the flow of the cooling liquid. When the side walls of the flow limiting elastic sheet do not abut against each other, the gap between adjacent flow limiting elastic sheets can also supply the flow of the cooling liquid. The size of the gap between adjacent flow limiting elastic sheets is proportional to the flow rate of the cooling liquid flowing through and proportional to the hydraulic pressure of the cooling liquid at the end away from the mounting ring of the flow limiting elastic sheet. When the hydraulic pressure of the cooling liquid at the end away from the mounting ring of the flow limiting elastic sheet is too high, the flow-through efficiency of the cooling liquid flowing through the flow limiting elastic sheet is reduced, which can make the cooling liquid in the liquid inlet cavity easily flow into the first pipe fitting with low flow-through efficiency. The flow limiting elastic sheet is used to control the internal cooling liquid flow-through efficiency of each first pipe fitting, which can make the cooling liquid flow-through efficiency of all the first pipe fittings close to each other, and avoid the technical problem that the cooling efficiency of the battery cells at different positions in the energy storage device is greatly different.

[0009] As a preferred scheme, the inner wall of the first pipe fitting is fixedly installed with an inner pipe fitting in the middle part, and a flow blocking cylindrical rod is arranged on the axis of the inner pipe fitting, and the flow blocking cylindrical rod is fixedly connected with the inner wall of the inner pipe fitting by a plurality of annular array mounting link plates.

[0010] Adopting the technical scheme, the cooling liquid will flow through the inner pipe fitting first, and then flow through the flow limiting elastic sheet. When flowing through the inner pipe fitting, the space occupied by the flow blocking cylindrical rod makes the cooling liquid only flow from the area close to the inner wall of the inner pipe fitting. When the cooling liquid flows to the area where the flow limiting elastic sheet is located, it can efficiently impact the surface of the side of the flow limiting elastic sheet close to the inner wall of the second pipe fitting, so that all the flow limiting elastic sheets can be uniformly stressed and close to each other, thereby ensuring the stability of the flow limiting function of the flow limiting elastic sheet.

[0011] As a preferred scheme, the inner wall of the mounting through hole is fixedly installed with a second pipe fitting at the end away from the liquid inlet cavity, a thread is formed in the inner wall of the second pipe fitting close to the first pipe fitting, an annular groove is arranged on the outer wall of the first pipe fitting close to the second pipe fitting, a thread is formed in the annular groove, and the first pipe fitting and the second pipe fitting are connected in a threaded manner.

[0012] Adopting the technical scheme, the first pipe fitting can be easily disassembled and installed, which facilitates the maintenance or replacement of the flow limiting elastic sheet during maintenance or repair, and maintains the stability of the cooling liquid flow limiting effect.

[0013] As a preferred scheme, the second pipe fitting is fixedly connected with the same flow blocking sheet at the end away from the first pipe fitting by two connecting rods, the connecting rods and the flow blocking sheet protrude from the end of the mounting through hole and are directly located in the gap between the battery cells; and the flow blocking sheet is an arc-shaped sheet structure with a concave surface facing the connecting rod.

[0014] By adopting the technical scheme, the cooling liquid flowing out of the second pipe can be blocked by the flow blocking piece to change direction, so that the cooling liquid flowing out of the second pipe in the form of high-speed laminar flow is prevented from flowing in the cell gap, which causes the high-temperature cooling liquid in the cell gap that has exchanged heat with the cell to be unable to be efficiently pushed to the drain cavity by the low-temperature cooling liquid, but instead the low-temperature cooling liquid passes over the high-temperature cooling liquid to first enter the drain cavity, so that the cooling liquid circulation effect is poor, and the cooling efficiency of the cell is reduced. The flow blocking piece can hinder the cooling liquid flowing out of the second pipe, so that the cooling liquid flowing out of the second pipe first generates turbulent flow, and then flows in the cell gap to the drain cavity, so that the high-temperature cooling liquid in the cell gap is efficiently pushed into the drain cavity, and the cooling liquid entering the cell gap can efficiently exchange heat with the cell, thereby improving the cooling efficiency of the energy storage device.

[0015] As a preferred scheme, all the flow blocking pieces installed in the same cell gap have straight edges that are parallel to each other, and the flow blocking pieces can guide most of the cooling liquid to the two sides by using the gathering effect of the concave surface. The cooling liquid guided by adjacent flow blocking pieces can better form turbulent flow in the cell gap near the flow blocking pieces, and then efficiently push out the high-temperature cooling liquid in the cell gap.

[0016] As a preferred scheme, the plurality of rod-shaped supports are composed of X-axis splicing rods, Y-axis splicing rods, Z-axis splicing rods, and separation rods, and as a preferred scheme, the X-axis splicing rods, the Y-axis splicing rods, the Z-axis splicing rods, and the separation rods are all angle steels.

[0017] As a preferred scheme, the volume of the liquid inlet cavity is smaller than the volume of the liquid drain cavity. The large-volume liquid drain cavity is beneficial to improve the immersion effect, and the small-volume liquid inlet cavity can reduce the overall volume of the energy storage device. The liquid inlet cavity can be designed to have a small volume, and based on the flow limiting effect of the flow limiting spring piece, the small-volume liquid inlet cavity has poor flow circulation efficiency and is more prone to have a large technical problem of poor flow circulation efficiency of the cell gap at different positions.

[0018] As a preferred scheme, the thickness of the flow limiting spring piece near one end of the mounting ring is smaller than the thickness of the free end of the flow limiting spring piece, so that when the flow limiting spring piece is impacted by the flow of the cooling liquid, the free ends of all the flow limiting spring pieces are prone to approach each other.

[0019] As a preferred scheme, the first separation plate and the second separation plate are provided with a mounting groove near one end of the liquid inlet cavity. The mounting groove can provide an operation space for disassembly and assembly of the first pipe, and facilitates the disassembly and assembly operation of the first pipe.

[0020] As a preferred solution, the external liquid cooling device comprises a cooling liquid heat exchanger for cooling the cooling liquid, a circulating pump, a cooling liquid storage tank; the cooling liquid heat exchanger, the circulating pump, the cooling liquid storage tank, the liquid inlet, the sealed box body and the overflow port are sequentially communicated by pipe fittings to form a circulation loop of the cooling liquid.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] 1. The energy storage device can uniformly, stably and lowly consume energy to heat and cool the battery cells in each region;

[0023] 2. The energy storage device can heat and cool the battery cells with high efficiency by immersing the battery cells in the cooling liquid and cooperating with the cooling liquid circulation effect;

[0024] 3. The energy storage device can avoid the technical problems of the prior art, such as small temperature difference between the cooling liquid and the battery cells and low cooling efficiency;

[0025] 4. The energy storage device can improve the heat exchange efficiency between the cooling liquid and the battery cells by designing the flow blocking piece to interfere with the flow law of the cooling liquid. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front oblique view of the overall structure of the immersed liquid cooling commercial energy storage device;

[0027] Figure 2 It is a rear oblique view of the overall structure of the immersed liquid cooling commercial energy storage device;

[0028] Figure 3 It is a front oblique view of the internal structure of the immersed liquid cooling commercial energy storage device;

[0029] Figure 4 It is a rear oblique view of the internal structure of the immersed liquid cooling commercial energy storage device;

[0030] Figure 5 It is an exploded view of the internal structure of the immersed liquid cooling commercial energy storage device;

[0031] Figure 6 It is a support frame structure diagram of the immersed liquid cooling commercial energy storage device;

[0032] Figure 7 It is a right perspective structure diagram of the immersed liquid cooling commercial energy storage device;

[0033] Figure 8 It is Figure 5 an enlarged view of the A area;

[0034] Figure 9The first partition plate and the second partition plate of the immersion liquid cooling industrial and commercial energy storage device are shown in the detailed structure diagram.

[0035] Figure 10 The stable pressure assembly of the immersion liquid cooling industrial and commercial energy storage device is shown in the exploded structure diagram.

[0036] Figure 11 The stable pressure assembly of the immersion liquid cooling industrial and commercial energy storage device is shown in the right perspective structure diagram.

[0037] Figure 12 The immersion liquid cooling industrial and commercial energy storage device is shown in the internal and external double-view structure diagram under the maximum current limiting state of the current limiting spring.

[0038] Figure 13 The immersion liquid cooling industrial and commercial energy storage device is shown in the internal and external double-view structure diagram under the minimum current limiting state of the current limiting spring.

[0039] In the figure, 101 is a front sealing plate, 102 is a rear sealing plate, 103 is a side sealing plate, 104 is an overflow port, 105 is a wiring port, 106 is a liquid inlet, 200 is a support frame body, 201 is an X-Y axis splicing rod, 202 is a Z-axis splicing rod, 203 is a partition rod, 204 is an electric core, 205 is an electric core gap, 301 is a first partition plate, 302 is a second partition plate, 303 is a mounting groove, 304 is a mounting through hole, 400 is a stable pressure assembly, 401 is a first pipe, 402 is a mounting ring, 403 is a current limiting spring, 404 is an embedded pipe, 405 is a flow resistance cylindrical rod, 406 is a mounting link plate, 407 is a second pipe, 408 is an annular groove, 409 is a link rod, and 410 is a flow blocking plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Embodiment: As Figures 1-13As shown, the present application provides an immersed liquid-cooled commercial energy storage device, which comprises a support frame body 200, a plurality of battery cells 204 arranged in the support frame body 200, a sealed box body covering the support frame body 200, and a gap 205 between adjacent battery cells 204. The sealed box body comprises a front sealing plate 101 and a rear sealing plate 102 arranged oppositely, and four side sealing plates 103 spliced together. The front sealing plate 101 is provided with an overflow port 104, and the rear sealing plate 102 is provided with a liquid inlet 106. The sealed box body is filled with cooling liquid. The overflow port 104 and the liquid inlet 106 are in communication with an external liquid cooling device. The external liquid cooling device can cool the circulating cooling liquid to ensure the continuous low temperature of the cooling liquid. The liquid cooling device is a prior art and will not be described in detail here. The external liquid cooling device pumps cooling liquid into the sealed box body, and then the cooling liquid overflows from the overflow port 104 to the outside, which can carry away the heat of the battery cells 204 and achieve the cooling effect of the battery cells 204. The front sealing plate 101 is also provided with a wiring port 105, and a wire penetrates through the wiring port 105 as a power transmission channel of the energy storage device. The wire fills the wiring port 105 to achieve a sealing effect. The energy storage device further comprises a first partition plate 301 and a second partition plate 302 sealed and filled in the gap 205 between the battery cells, a liquid discharge chamber 107 and a liquid inlet chamber 108 located at opposite ends of the sealed box body, and the liquid discharge chamber 107 and the liquid inlet chamber 108 can only communicate with each other through the gap 205 between the battery cells. The first partition plate 301 and the second partition plate 302 are located at one end of the gap 205 close to the liquid inlet chamber 108. The first partition plate 301 and the second partition plate 302 are both provided with a mounting hole 304 penetratingly formed thereon, and a voltage stabilizing assembly 400 is mounted in the mounting hole 304. The voltage stabilizing assembly 400 comprises a first pipe 401 mounted in the mounting hole 304, and an installation ring 402 fixedly installed at one end of the first pipe 401 away from the liquid inlet chamber 108. Eight flow limiting springs 403 are annularly arranged on the side wall of the installation ring 402 close to the liquid inlet chamber 108. The flow limiting springs 403 are arc-shaped springs with concave surfaces facing the axis of the installation ring 402, which can enhance the bending effect of the flow limiting springs 403 under the impact of the cooling liquid flow. According to the above technical solution, the cooling liquid is pumped into the liquid inlet chamber 108 from the liquid inlet 106, and then flows through the first pipe 401, the flow limiting springs 403, the installation ring 402, and the liquid discharge chamber 107 in sequence, and finally overflows from the overflow port 104. When the cooling liquid flows through the flow limiting springs 403, the free ends of the flow limiting springs 403 are close to each other under the impact of the cooling liquid flow. The limit is that the side walls of the flow limiting springs 403 abut against each other. At this time, only the flow-through hole formed by the free ends of all the flow limiting springs 403 can allow the cooling liquid to flow. When the side walls of the flow limiting springs 403 do not abut against each other, the gap between adjacent flow limiting springs 403 can also allow the cooling liquid to flow. The size of the gap between adjacent flow limiting springs 403 is proportional to the flow rate of the cooling liquid flowing through it and proportional to the hydraulic pressure of the cooling liquid away from the installation ring 402.When the hydraulic pressure of the cooling liquid is too high at the end of the flow-limiting spring 403 away from the mounting ring 402, the flow efficiency of the cooling liquid flowing through the flow-limiting spring 403 is reduced, so that the cooling liquid in the liquid inlet cavity 108 is easily flowed into the first pipe 401 with low flow efficiency, and the flow efficiency of the cooling liquid in each first pipe 401 is controlled by the flow-limiting spring 403, so that the flow efficiency of the cooling liquid in all first pipes 401 is close, and the technical problem of large difference in cooling efficiency of the battery cells 204 at different positions in the energy storage device is avoided.

[0042] The inner wall of the first pipe 401 is fixedly installed with an inner pipe 404 in the middle part, the inner pipe 404 is provided with a flow-blocking cylindrical rod 405 on the axis, and the flow-blocking cylindrical rod 405 is fixedly connected with the inner wall of the inner pipe 404 by three annular arrays of mounting connecting pieces 406. By using the above technical scheme, the cooling liquid first flows through the inner pipe 404 and then flows through the flow-limiting spring 403. When flowing through the inner pipe 404, the cooling liquid can only flow from the area close to the inner wall of the inner pipe 404 due to the space occupation of the flow-blocking cylindrical rod 405. When the cooling liquid flows to the area where the flow-limiting spring 403 is located, the flow-limiting spring 403 can be efficiently impacted on the side surface close to the inner wall of the second pipe 407, so that all flow-limiting springs 403 can be uniformly stressed and close to each other, and the stability of the flow-limiting function of the flow-limiting spring 403 is ensured.

[0043] The second pipe 407 is fixedly installed in the inner wall of the mounting through hole 304 away from the liquid inlet cavity 108, the inner wall of the second pipe 407 is provided with a thread close to one end of the first pipe 401, the outer wall of the first pipe 401 is provided with an annular groove 408 close to one end of the second pipe 407, the annular groove 408 is provided with a thread, and the first pipe 401 and the second pipe 407 are threadedly connected. By using the above technical scheme, the first pipe 401 can be easily disassembled and installed, which is convenient for repairing or replacing the flow-limiting spring 403 during maintenance, and the stability of the flow-limiting effect of the cooling liquid is maintained.

[0044] The second pipe fitting 407 is fixed with the same baffle 410 at one end away from the first pipe fitting 401 by two connecting rods 409, the connecting rods 409 and the baffle 410 protrude from the end of the mounting through hole 304 and are directly located in the cell gap 205; the baffle 410 is an arc-shaped piece structure with a concave surface facing the connecting rod 409; by adopting the above technical solution, the cooling liquid flowing out of the second pipe fitting 407 can be blocked by the baffle 410 to change direction, so as to avoid the cooling liquid flowing out of the second pipe fitting 407 in a high-speed laminar flow manner inside the cell gap 205, which will cause the high-temperature cooling liquid inside the cell gap 205, which has exchanged heat with the cell 204, to be unable to be efficiently pushed by the low-temperature cooling liquid to the direction of the liquid discharge cavity 107, instead, the low-temperature cooling liquid passes through the high-temperature cooling liquid under the action of the laminar flow and first enters the inside of the liquid discharge cavity 107, which makes the cooling liquid circulation effect poor and further reduces the cooling efficiency of the cell 204; the baffle 410 can hinder the cooling liquid just flowing out of the second pipe fitting 407, so that the cooling liquid just flowing out of the second pipe fitting 407 first generates turbulent flow, and then flows in the direction of the liquid discharge cavity 107 inside the cell gap 205, efficiently pushing the high-temperature cooling liquid inside the cell gap 205 into the liquid discharge cavity 107, and further efficiently exchanging heat between the cooling liquid just entering the cell gap 205 and the cell 204, thereby improving the cooling efficiency of the energy storage device.

[0045] All baffles 410 installed in the same cell gap 205 have parallel straight edges, and by using the gathering effect of the concave surface, most of the cooling liquid can be guided to both sides, and the cooling liquid guided by adjacent baffles 410 can better form turbulent flow in the area of the cell gap 205 close to the baffle 410, thereby efficiently pushing out the high-temperature cooling liquid inside the cell gap 205.

[0046] 200 is composed of several rod-shaped supports including X, Y axis splicing rods 201, Z axis splicing rods 202 and partition rods 203; the X, Y axis splicing rods 201, the Z axis splicing rods 202 and the partition rods 203 are all angle steels.

[0047] The volume of the liquid inlet cavity 108 is smaller than the volume of the liquid discharge cavity 107, the large-volume liquid discharge cavity 107 is beneficial to improve the immersion effect, and the small-volume liquid inlet cavity 108 can reduce the overall volume of the energy storage device; the liquid inlet cavity 108 can be designed to be small in volume, and based on the flow limiting effect of the flow limiting spring 403, the small-volume liquid inlet cavity 108 has poor flow efficiency and is more prone to have a large technical problem of poor flow efficiency difference between different cell gaps 205.

[0048] The thickness of the flow limiting spring 403 close to one end of the mounting ring 402 is smaller than the thickness of the free end of the flow limiting spring 403, so that when the flow limiting spring 403 is impacted by the flow of the cooling liquid, the free ends of all the flow limiting springs 403 are easily close to each other.

[0049] The first partition plate 301 and the second partition plate 302 are provided with mounting grooves 303 near one end of the liquid inlet cavity 108, the mounting grooves 303 can provide operation space for dismounting and mounting the first pipe 401, and facilitate the dismounting and mounting operation of the first pipe 401.

[0050] The external liquid cooling device comprises a cooling liquid heat exchanger for cooling the cooling liquid, a circulating pump, and a cooling liquid storage tank; the cooling liquid heat exchanger, the circulating pump, the cooling liquid storage tank, the liquid inlet 106, the sealed box body, and the overflow port 104 are sequentially connected by pipes to form a cooling liquid circulation loop.

[0051] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments but can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered to be a limitation on the scope of the claims.

Claims

1. An immersed liquid-cooled industrial commercial energy storage device, comprising a support frame body (200), a plurality of battery cells (204) arranged in an array inside the support frame body (200), a sealed box body sealing the support frame body (200), and a cell gap (205) between adjacent battery cells (204), characterized in that: The sealed box body includes front and rear sealing plates (101) and four side sealing plates (103) in relative positions, the front sealing plate (101) is provided with an overflow port (104), the rear sealing plate (102) is provided with a liquid inlet (106), the sealed box body is filled with cooling liquid, and the overflow port (104) and the liquid inlet (106) are in common communication with external liquid cooling equipment; The energy storage device further comprises first and second partition plates (301) and (302) filled in the cell gap (205), liquid discharge and liquid inlet cavities (107) and (108) located at opposite ends in the sealed box body, and the liquid discharge and liquid inlet cavities (107) and (108) can only communicate with each other through the cell gap (205); the first and second partition plates (301) and (302) are located at one end of the cell gap (205) close to the liquid inlet cavity (108), mounting through holes (304) are formed in the first and second partition plates (301) and (302), and a voltage stabilizing assembly (400) is mounted in the mounting through holes (304); The voltage stabilizing assembly (400) comprises a first pipe (401) mounted in the mounting through hole (304), an installation ring (402) fixedly mounted at one end of the first pipe (401) away from the liquid inlet cavity (108), a plurality of flow limiting elastic sheets (403) annularly arranged on the side wall of the installation ring (402) close to the liquid inlet cavity (108), and the flow limiting elastic sheets (403) are arc-shaped elastic sheets with concave surfaces facing the axis of the installation ring (402). An inner pipe (404) is fixedly mounted on the inner wall of the first pipe (401), a flow resistance cylindrical rod (405) is arranged on the axis of the inner pipe (404), and the flow resistance cylindrical rod (405) is fixedly connected to the inner wall of the inner pipe (404) by a plurality of annularly arranged mounting link plates (406).

2. The submerged liquid-cooled industrial CES device of claim 1, wherein: A second pipe (407) is fixedly mounted on the inner wall of the mounting through hole (304) away from the liquid inlet cavity (108), a thread is formed on the inner wall of the second pipe (407) close to the first pipe (401), an annular groove (408) is arranged on the outer wall of the first pipe (401) close to the second pipe (407), a thread is formed on the annular groove (408), and the first pipe (401) and the second pipe (407) are threadedly connected.

3. The submerged liquid-cooled industrial CES device of claim 2, wherein: The same flow blocking sheet (410) is fixedly connected to the second pipe (407) away from the first pipe (401) by two link rods (409), the link rods (409) and the flow blocking sheet (410) protrude from the end of the mounting through hole (304) and are directly located in the cell gap (205); and the flow blocking sheet (410) is an arc-shaped sheet structure with a concave surface facing the link rod (409).

4. The submerged liquid-cooled industrial CES device of claim 3, wherein: All the flow blocking sheets (410) mounted in the same cell gap (205) have straight edges parallel to each other.

5. The submerged liquid-cooled industrial CES device of claim 1, wherein: The support frame body (200) is welded by several rod-shaped supports including X, Y axis splicing rods (201), Z axis splicing rods (202) and separation rods (203).

6. The submerged liquid-cooled industrial CES device of claim 1, wherein: The volume of the liquid inlet cavity (108) is smaller than that of the liquid outlet cavity (107).

7. The submerged liquid-cooled industrial CES device of claim 1, wherein: The thickness of the flow limiting elastic sheet (403) near one end of the mounting ring (402) is smaller than that of the free end of the flow limiting elastic sheet (403), so that the free ends of all the flow limiting elastic sheets (403) are easily close to each other when the flow limiting elastic sheets (403) are impacted by the flowing cooling liquid.

8. The submerged liquid-cooled industrial CES device of claim 1, wherein: The first and second separation plates (301 and 302) are provided with mounting grooves (303) near one end of the liquid inlet cavity (108).

9. The submerged liquid-cooled industrial CES device of claim 1, wherein: The external liquid cooling device comprises a cooling liquid heat exchanger for cooling the cooling liquid, a circulating pump, and a cooling liquid storage tank; the cooling liquid heat exchanger, the circulating pump, the cooling liquid storage tank, the liquid inlet (106), the sealing box body, and the overflow port (104) are sequentially connected by pipes to form a cooling liquid circulation loop.

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