Liquid-cooled immersion-type UPS battery structure
Through liquid-cooled immersion design, the battery cell module is immersed in coolant, which solves the risk of heat spread and fire in UPS battery modules during thermal runaway, and achieves cooling and oxygen isolation between the battery cell module and electronic components, thus extending the battery's service life.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN CENT POWER TECH
- Filing Date
- 2025-10-07
- Publication Date
- 2026-07-23
Smart Images
Figure CN2025126377_23072026_PF_FP_ABST
Abstract
Description
A liquid-cooled immersion UPS battery structure Technical Field
[0001] This utility model relates to the field of battery technology, and in particular to a liquid-cooled immersion UPS battery structure. Background Technology
[0002] With the deepening development of new energy industries such as energy storage, photovoltaics, and wind power, various new energy sources are integrating to form complementary energy stations. Currently, existing UPS battery module packs mostly use conventional air cooling or natural cooling methods, and due to cost considerations, internal fire suppression systems are rarely used. After thermal runaway occurs within the battery cells of the module, there is a risk of heat propagation; even if a fire suppression system is activated, there is still a certain probability of reignition, potentially leading to a fire, posing a safety hazard. Furthermore, during high-rate discharge, the temperature rise of the battery cells increases rapidly, which can reduce their lifespan to some extent.
[0003] Utility Model Content
[0004] Based on this, the present invention provides a liquid-cooled immersion UPS battery structure, which aims to solve the problems of existing UPS battery module PACKs, such as the risk of heat spread and fire when thermal runaway occurs in the internal cells, and the instantaneous increase in cell temperature reducing the lifespan of the cells.
[0005] To achieve the above objectives, the present invention proposes the following technical solution: a liquid-cooled immersion UPS battery structure, comprising a cover plate, a housing, a cell module, and a coolant; the cell module is disposed within the housing; the coolant is contained within the housing, and the cell module is immersed in the coolant; the cover plate covers the top of the housing;
[0006] The housing has an independent coolant inlet, coolant outlet, and explosion-proof valve on one end face; the coolant inlet and coolant outlet are respectively connected to the housing; the coolant inlet and coolant outlet are both located near the bottom of the end face, and the explosion-proof valve is located near the top of the end face.
[0007] In a preferred embodiment, the coolant inlet and the coolant outlet are arranged parallel to each other, with the coolant inlet located at one end of the end face and the coolant outlet located at the other end of the end face.
[0008] In a preferred embodiment, an explosion-proof valve hole is provided through the end face, the explosion-proof valve is disposed in the explosion-proof valve hole, and the explosion-proof valve is adapted to the explosion-proof valve hole.
[0009] In a preferred embodiment, an electronic component is disposed on the end face near the inner side of the housing, and the electronic component is submerged in the coolant.
[0010] In a preferred embodiment, a first output terminal and a second output terminal are also provided on the end face. The first output terminal and the second output terminal are both located between the explosion-proof valve and the coolant inlet. The end of the first output terminal near the housing and the end of the second output terminal near the housing are both submerged in the coolant.
[0011] In a preferred embodiment, the first output terminal is a positive terminal and the second output terminal is a negative terminal; or, the first output terminal is a negative terminal and the second output terminal is a positive terminal.
[0012] In a preferred embodiment, the coolant is a fluorinated liquid.
[0013] In a preferred embodiment, the cover plate and the box body are sealed together by a sealing structure; the sealing structure is foamed silicone.
[0014] In a preferred embodiment, the battery cell module includes at least two module units arranged side by side; each module unit has a first fixed end plate at one end and a second fixed end plate at the other end; the first fixed end plate is disposed close to the end face; the first fixed end plate and the second fixed end plate are respectively disposed in contact with the module unit.
[0015] In a preferred embodiment, each module unit is provided with a first fixing strap and a second fixing strap on its outer side; the first fixing strap is sleeved on the upper part of the module unit, and one end of the first fixing strap is fixedly connected to the first fixing end plate, and the other end is fixedly connected to the second fixing end plate.
[0016] The second fixing strap is sleeved on the lower part of the module unit, and one end of the second fixing strap is fixedly connected to the first fixing end plate, and the other end is fixedly connected to the second fixing end plate.
[0017] In a preferred embodiment, a first insulating plate is provided on the side of the module unit near the cover plate. The first insulating plate is disposed between the module unit and the first fixing strip / second fixing strip, and the first insulating plate abuts against the module unit and the first fixing strip / second fixing strip respectively.
[0018] In a preferred embodiment, a second insulating plate is provided on the side of the module unit near the bottom of the housing. The second insulating plate is disposed between the module unit and the first fixing strip / second fixing strip, and the second insulating plate abuts against the module unit and the first fixing strip / second fixing strip respectively.
[0019] In a preferred embodiment, the first insulating plate and the second insulating plate are respectively adapted to the module unit.
[0020] In a preferred embodiment, the module unit is further provided with a leak-proof tray on the side near the bottom of the housing, and the leak-proof tray is fitted onto the side of the module unit near the bottom of the housing; the leak-proof tray is adapted to the module unit.
[0021] In a preferred embodiment, each module unit includes several parallel battery cells; adjacent battery cells in the same module unit are connected by a corrugated connecting piece.
[0022] The beneficial effects achieved by this utility model are as follows: By installing a cooling liquid inside the casing and an explosion-proof valve on the end face of the casing, and immersing the battery cell module and electronic components in the cooling liquid, the overall cooling of the battery cell module and electronic components and their isolation from oxygen can be achieved. This effectively solves the problems of heat generation in electronic components, heat generation during battery cell preparation and discharge, and heat generation at output terminal connections. In the event of thermal runaway of the battery cell, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the casing, preventing the module from exploding. This structure effectively solves the thermal and safety problems of the PACK itself, effectively isolating air in the event of thermal runaway of the battery cell, thereby effectively reducing the risk of PACK fire. This structure is simple, easy to assemble and disassemble, and convenient to maintain. It can effectively extend the battery's lifespan, has high practicality and economy, and is widely applicable, making it suitable for general production and use. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0024] Figure 1 is a schematic diagram of the overall structure of a liquid-cooled submersible UPS battery structure according to an embodiment of the present invention.
[0025] Figure 2 is a schematic diagram of the internal structure of the liquid-cooled submerged UPS battery structure shown in Figure 1.
[0026] Figure 3 is a partial exploded structural diagram of the liquid-cooled submerged UPS battery structure shown in Figure 1.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0031] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0033] Specifically, as shown in Figures 1 to 3, the present invention proposes the following technical solution: a liquid-cooled immersion UPS battery structure, comprising a cover plate 10, a housing 20, a cell module 30, and a coolant 40; the cell module 30 is disposed within the housing 20; the coolant 40 is contained within the housing 20, and the cell module 30 is immersed in the coolant 40; the cover plate 10 covers the top of the housing 20;
[0034] The housing 20 has an independent coolant inlet 50, coolant outlet 60 and explosion-proof valve 70 on one end face 21; the coolant inlet 50 and the coolant outlet 60 are respectively connected to the housing 20; the coolant inlet 50 and the coolant outlet 60 are both located near the bottom of the end face 21, and the explosion-proof valve 70 is located near the top of the end face 21.
[0035] In this embodiment of the application, "immersion" refers to complete submersion. For example, "the battery cell module 30 is immersed in the coolant 40" means that the battery cell module 30 is completely submerged in the coolant 40.
[0036] The coolant inlet 50 and coolant outlet 60 are both located near the bottom of the end face 21, while the explosion-proof valve 70 is located near the top of the end face 21. This allows the coolant to submerge the battery cell module and electronic components without submerging the explosion-proof valve. This enables overall cooling of the battery cell module and electronic components, as well as isolation from oxygen. It effectively solves the problems of heat generation in electronic components, heat generation during battery cell preparation and discharge, and heat generation during output terminal connection. In the event of thermal runaway of the battery cell, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the enclosure, preventing the module from exploding.
[0037] In a preferred embodiment, the coolant inlet 50 and the coolant outlet 60 are arranged parallel to each other, with the coolant inlet 50 located at one end of the end face 21 and the coolant outlet 60 located at the other end of the end face 21. This arrangement facilitates the input and output of coolant and is convenient for operation.
[0038] In a preferred embodiment, an explosion-proof valve hole (not shown in the figure) is provided on the end face 21, and the explosion-proof valve 70 is disposed in the explosion-proof valve hole, and the explosion-proof valve 70 is adapted to the explosion-proof valve hole.
[0039] In a preferred embodiment, an electronic component 80 is provided on the inner side of the end face 21 near the housing 20, and the electronic component 80 is submerged in the coolant 40.
[0040] In a preferred embodiment, a first output terminal 211 and a second output terminal 212 are also provided on the end face 21. The first output terminal 211 and the second output terminal 212 are both located between the explosion-proof valve 70 and the coolant inlet 50. The end of the first output terminal 211 near the housing 20 and the end of the second output terminal 212 near the housing 20 are both submerged in the coolant 40.
[0041] In a preferred embodiment, the first output terminal 211 is the positive terminal and the second output terminal 212 is the negative terminal; or, the first output terminal 211 is the negative terminal and the second output terminal 212 is the positive terminal.
[0042] In a preferred embodiment, the coolant 40 is a fluorinated liquid. Using a fluorinated liquid as a coolant is economical and ensures both cooling and insulation effects.
[0043] In a preferred embodiment, the cover plate 10 and the housing 20 are sealed together by a sealing structure (not shown in the figure); the sealing structure is foamed silicone. This ensures the overall airtightness of the housing structure. In this embodiment, the housing as a whole adopts an IP67 airtight structure, and the high-risk connections are sealed by full welding before being sealed with adhesive, which further ensures the overall sealing performance of the housing.
[0044] In a preferred embodiment, the battery cell module 30 includes at least two module units 31 arranged side by side; each module unit 31 has a first fixed end plate 311 at one end and a second fixed end plate 312 at the other end; the first fixed end plate 311 is disposed close to the end face 21; the first fixed end plate 311 and the second fixed end plate 312 are respectively disposed in contact with the module unit 31.
[0045] In a preferred embodiment, each module unit 31 is provided with a first fixing strap 313 and a second fixing strap 314 on its outer side; the first fixing strap 313 is sleeved on the upper part of the module unit 31, and one end of the first fixing strap 313 is fixedly connected to the first fixing end plate 311, and the other end is fixedly connected to the second fixing end plate 312.
[0046] The second fixing strap 314 is sleeved on the lower part of the module unit 31, and one end of the second fixing strap 314 is fixedly connected to the first fixing end plate 311, and the other end is fixedly connected to the second fixing end plate 312.
[0047] In this embodiment of the application, both the first fixed end plate 311 and the second fixed end plate 312 are provided with slots for fixing the first fixing strap 313 and the second fixing strap 314. The first fixing strap 313 and the second fixing strap 314 are locked onto the matching slots, which makes fixing convenient and quick, simplifies the fixing of the fixing straps, reduces the volume increase caused by fixing, and thus improves the volumetric energy density of the box structure.
[0048] In a preferred embodiment, a first insulating plate 315 is provided on the side of the module unit 31 near the cover plate 10. The first insulating plate 315 is disposed between the module unit 31 and the first fixing strap 313 / second fixing strap 314, and the first insulating plate 315 abuts against the module unit 31 and the first fixing strap 313 / second fixing strap 314 respectively.
[0049] In a preferred embodiment, a second insulating plate 316 is provided on the side of the module unit 31 near the bottom of the housing 20. The second insulating plate 316 is disposed between the module unit 31 and the first fixing strap 313 / second fixing strap 314, and the second insulating plate 316 abuts against the module unit 31 and the first fixing strap 313 / second fixing strap 314 respectively.
[0050] In a preferred embodiment, the first insulating plate 315 and the second insulating plate 316 are respectively adapted to the module unit 31.
[0051] In a preferred embodiment, a leak-proof tray 317 is provided on the side of the module unit 31 near the bottom of the housing 20. The leak-proof tray 317 is sleeved on the side of the module unit 31 near the bottom of the housing 20. The leak-proof tray 317 is adapted to the module unit 31.
[0052] In a preferred embodiment, each module unit 31 includes several parallel battery cells 318; in the same module unit 31, adjacent battery cells 318 are connected by a corrugated connecting piece 90.
[0053] This application, by incorporating a cooling liquid within the enclosure and installing an explosion-proof valve on the end face of the enclosure, and immersing the battery cell module and electronic components in the coolant, achieves overall cooling of the battery cell module and electronic components, as well as isolation from oxygen. This effectively solves the problems of overheating in electronic components, overheating during battery cell preparation and discharge, and overheating at output terminal connections. In the event of thermal runaway of the battery cell, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the enclosure, preventing the module from exploding. This structure effectively solves the thermal and safety problems of the battery pack itself, effectively isolating air in the event of thermal runaway, thereby significantly reducing the risk of battery pack fire. This application has a simple structure, is easy to assemble and disassemble, facilitates maintenance, effectively extends battery life, and possesses high practicality and economy. It has a wide range of applications and can be used as a general-purpose product.
[0054] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A liquid-cooled immersion UPS battery structure, characterized in that, The device includes a cover plate, a housing, a battery cell module, and a coolant; the battery cell module is disposed inside the housing; the coolant is contained inside the housing, and the battery cell module is submerged in the coolant; the cover plate covers the top of the housing. The housing has an independent coolant inlet, coolant outlet, and explosion-proof valve on one end face; the coolant inlet and coolant outlet are respectively connected to the housing; the coolant inlet and coolant outlet are both located near the bottom of the end face, and the explosion-proof valve is located near the top of the end face.
2. The liquid-cooled submersible UPS battery structure according to claim 1, characterized in that, The coolant inlet and the coolant outlet are arranged parallel to each other, with the coolant inlet located at one end of the end face and the coolant outlet located at the other end of the end face. An explosion-proof valve hole is provided through the end face, the explosion-proof valve is disposed in the explosion-proof valve hole, and the explosion-proof valve is adapted to the explosion-proof valve hole.
3. The liquid-cooled submersible UPS battery structure according to claim 1, characterized in that, Electronic components are disposed on the inner side of the end face near the housing, and the electronic components are submerged in the coolant.
4. The liquid-cooled submersible UPS battery structure according to claim 1, characterized in that, The end face is also provided with a first output terminal and a second output terminal, both of which are located between the explosion-proof valve and the coolant inlet; the end of the first output terminal near the housing and the end of the second output terminal near the housing are both submerged in the coolant.
5. The liquid-cooled submersible UPS battery structure according to claim 4, characterized in that, The first output terminal is a positive terminal and the second output terminal is a negative terminal; or, the first output terminal is a negative terminal and the second output terminal is a positive terminal.
6. The liquid-cooled submersible UPS battery structure according to claim 1, characterized in that, The coolant is a fluorinated liquid; the cover plate and the housing are sealed together by a sealing structure; the sealing structure is foamed silicone.
7. The liquid-cooled submersible UPS battery structure according to claim 1, characterized in that, The battery cell module includes at least two module units arranged in parallel; each module unit has a first fixed end plate at one end and a second fixed end plate at the other end; the first fixed end plate is disposed close to the end face; the first fixed end plate and the second fixed end plate are respectively disposed in contact with the module unit.
8. The liquid-cooled submersible UPS battery structure according to claim 7, characterized in that, Each module unit is provided with a first fixing strap and a second fixing strap on its outer side; the first fixing strap is sleeved on the upper part of the module unit, and one end of the first fixing strap is fixedly connected to the first fixing end plate, and the other end is fixedly connected to the second fixing end plate. The second fixing strap is sleeved on the lower part of the module unit, and one end of the second fixing strap is fixedly connected to the first fixing end plate, and the other end is fixedly connected to the second fixing end plate.
9. The liquid-cooled submersible UPS battery structure according to claim 8, characterized in that, A first insulating plate is provided on the side of the module unit near the cover plate. The first insulating plate is disposed between the module unit and the first fixing strip / second fixing strip, and the first insulating plate abuts against the module unit and the first fixing strip / second fixing strip respectively. A second insulating plate is provided on the side of the module unit near the bottom of the housing. The second insulating plate is disposed between the module unit and the first fixing strip / second fixing strip, and the second insulating plate abuts against the module unit and the first fixing strip / second fixing strip respectively.
10. The liquid-cooled submersible UPS battery structure according to claim 9, characterized in that, The first insulating plate and the second insulating plate are respectively adapted to the module unit; A leak-proof tray is also provided on the side of the module unit near the bottom of the housing. The leak-proof tray is fitted onto the side of the module unit near the bottom of the housing. The leak-proof tray is adapted to fit the module unit. Each module unit includes several parallel battery cells; adjacent battery cells in the same module unit are connected by a corrugated connecting piece.