Liquid cooling immersion type UPS battery structure

Abstract

The invention relates to a liquid-cooled immersed UPS battery structure, which comprises a cover plate, a box body, a battery cell module and a cooling liquid, the battery cell module is arranged in the box body; the cooling liquid is contained in the box body, and the battery cell module is immersed in the cooling liquid; the cover plate covers the top of the box body; a cooling liquid inlet, a cooling liquid outlet and an anti-explosion valve which are mutually independent are arranged on one end surface of the box body; the cooling liquid inlet and the cooling liquid outlet are respectively communicated with the box body; the cooling liquid inlet and the cooling liquid outlet are arranged close to the bottom of the end face, and the anti-explosion valve is arranged close to the top of the end face. According to the invention, the overall cooling and oxygen isolation of the battery cell module and the electronic element can be realized, and after the battery cell is in thermal runaway, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the box body, so that the module explosion is prevented, the service life of the battery can be effectively prolonged, and the battery can be produced and used as a general product.

Description

Technical Field

[0001] The invention relates to the technical field of batteries, and in particular to a liquid-cooled immersion UPS battery structure. Background Art

[0002] With the in-depth development of new energy industries such as energy storage, photovoltaics and wind energy, various new energy sources are integrated to form complementary energy stations. From the current market perspective, existing UPS battery module PACKs all use conventional air cooling or natural cooling. For cost considerations, there is little fire protection inside the module. After the battery cell inside the battery module has thermal runaway, there is a risk of heat spread; even if the fire protection module is activated, there is still a certain probability of re-ignition, and then a fire occurs, which poses a certain safety hazard. Moreover, when the product is discharged at a high rate, the temperature rise of the battery cell increases instantly, which will also reduce the service life of the battery cell to a certain extent. Summary of the invention

[0003] Based on this, the present invention provides a liquid-cooled immersed UPS battery structure, which aims to solve the problems of the existing UPS battery module PACK, such as the risk of heat spread and fire when the internal battery cell undergoes thermal runaway, the instantaneous increase of battery cell temperature and the reduction of battery cell service life.

[0004] To achieve the above-mentioned purpose, the embodiment of the present invention proposes the following technical solution: a liquid-cooled submerged UPS battery structure, comprising a cover plate, a box body, a battery module and a coolant; the battery module is arranged in the box body; the coolant is contained in the box body, and the battery module is submerged in the coolant; the cover plate covers the top of the box body;

[0005] One end surface of the box body is provided with a coolant inlet, a coolant outlet and an explosion-proof valve which are independent of each other; the coolant inlet and the coolant outlet are respectively connected to the box body; the coolant inlet and the coolant outlet are both arranged near the bottom of the end surface, and the explosion-proof valve is arranged near the top of the end surface.

[0006] As a preferred embodiment, the coolant inlet and the coolant outlet are arranged in parallel, and the coolant inlet is arranged at one end of the end surface, and the coolant outlet is arranged at the other end of the end surface.

[0007] As a preferred embodiment, an explosion-proof valve hole penetrating the end surface is provided on the end surface, the explosion-proof valve is provided in the explosion-proof valve hole, and the explosion-proof valve is adapted to be provided with the explosion-proof valve hole.

[0008] As a preferred embodiment, an electronic component is disposed on the inner side of the end surface close to the box body, and the electronic component is immersed in the coolant.

[0009] As a preferred embodiment, a first output terminal and a second output terminal are further provided on the end surface, and the first output terminal and the second output terminal are both provided between the explosion-proof valve and the coolant inlet; one end of the first output terminal close to the box body and one end of the second output terminal close to the box body are both immersed in the coolant.

[0010] As a preferred implementation, 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.

[0011] As a preferred embodiment, the coolant is a fluorinated liquid.

[0012] As a preferred embodiment, the cover plate and the box body are sealed and connected via a sealing structure; the sealing structure is foamed silicone.

[0013] As a preferred embodiment, the battery cell module includes at least two module units arranged in parallel; each of the module units is provided with a first fixed end plate at one end and a second fixed end plate at the other end; the first fixed end plate is arranged close to the end face; the first fixed end plate and the second fixed end plate are respectively arranged in abutment with the module unit.

[0014] As a preferred embodiment, a first fixing belt and a second fixing belt are provided on the outer side of each module unit; the first fixing belt is sleeved on the upper part of the module unit, and one end of the first fixing belt is fixedly connected to the first fixed end plate, and the other end is fixedly connected to the second fixed end plate;

[0015] The second fixing belt is sleeved on the lower part of the module unit, and one end of the second fixing belt is fixedly connected to the first fixed end plate, and the other end of the second fixing belt is fixedly connected to the second fixed end plate.

[0016] As a preferred embodiment, a first insulating plate is provided on the side of the module unit close to the cover plate, the first insulating plate is provided between the module unit and the first fixing belt / the second fixing belt, and the first insulating plate is respectively provided in contact with the module unit and the first fixing belt / the second fixing belt.

[0017] As a preferred embodiment, a second insulating plate is provided on the side of the module unit close to the bottom of the box body, the second insulating plate is provided between the module unit and the first fixing belt / the second fixing belt, and the second insulating plate is respectively provided in contact with the module unit and the first fixing belt / the second fixing belt.

[0018] As a preferred embodiment, the first insulating plate and the second insulating plate are respectively configured to match the module unit.

[0019] As a preferred embodiment, a liquid-leakage-proof tray is further provided on the side of the module unit close to the bottom of the box body, and the liquid-leakage-proof tray is sleeved on the side of the module unit close to the bottom of the box body; the liquid-leakage-proof tray is adapted to the module unit.

[0020] As a preferred embodiment, each of the module units includes a plurality of battery cells arranged in parallel; in the same module unit, adjacent battery cells are connected by a wavy connecting sheet.

[0021] Beneficial effects achieved by the present invention: By setting a cooling liquid in the box body, setting an explosion-proof valve on the end face of the box body, and immersing the battery module and the electronic components in the cooling liquid, the battery module and the electronic components can be cooled as a whole and isolated from oxygen, which can effectively solve the problems of heating of electronic components, heating of battery preparation discharge, and heating of output terminal connection. After the battery cell thermal runaway, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the box body to prevent the module from exploding. Through the structure of the present application, the thermal and safety problems of the PACK itself can be effectively solved, and the air can be effectively isolated when the battery cell thermal runaway occurs, thereby effectively reducing the risk of fire of the PACK. The present application has a simple structure, is easy to disassemble and assemble, and is easy to maintain. It can effectively extend the service life of the battery, has high practicality and economy, and has a wide range of applications. It can be produced and used as a general product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of a liquid-cooled submerged UPS battery structure according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the internal structure of the liquid-cooled flooded UPS battery structure;

[0025] Figure 3 for Figure 1 Schematic diagram of the partial explosion structure of the liquid-cooled flooded UPS battery structure.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] 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.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Specifically, Figures 1 to 3As shown, the embodiment of the present invention proposes the following technical solution: a liquid-cooled submerged UPS battery structure, comprising a cover plate 10, a box body 20, a battery module 30 and a cooling liquid 40; the battery module 30 is arranged in the box body 20; the cooling liquid 40 is contained in the box body 20, and the battery module 30 is submerged in the cooling liquid 40; the cover plate 10 covers the top of the box body 20;

[0033] An end surface 21 of the box body 20 is provided with a coolant inlet 50, a coolant outlet 60 and an explosion-proof valve 70 which are independent of each other; the coolant inlet 50 and the coolant outlet 60 are respectively connected to the box body 20; the coolant inlet 50 and the coolant outlet 60 are both arranged near the bottom of the end surface 21, and the explosion-proof valve 70 is arranged near the top of the end surface 21.

[0034] In the embodiment of the present application, submersion refers to complete immersion. For example, “the battery cell module 30 is submerged in the coolant 40 ” means that the battery cell module 30 is completely submerged in the coolant 40 .

[0035] The coolant inlet 50 and the coolant outlet 60 are both arranged near the bottom of the end surface 21, and the explosion-proof valve 70 is arranged near the top of the end surface 21, so that the coolant can invade the battery module and the electronic components without invading the explosion-proof valve, so that the battery module and the electronic components can be cooled as a whole and isolated from oxygen, which can effectively solve the problems of heating of electronic components, heating of battery preparation discharge and heating of output terminal connection. After the battery cell thermal runaway, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the box to prevent the module from exploding.

[0036] As a preferred embodiment, the coolant inlet 50 is arranged in parallel with the coolant outlet 60, and the coolant inlet 50 is arranged at one end of the end surface 21, and the coolant outlet 60 is arranged at the other end of the end surface 21. This arrangement facilitates the input and output of the coolant and facilitates operation.

[0037] As a preferred embodiment, an explosion-proof valve hole (not marked in the figure) penetrating the end surface 21 is provided on the end surface 21, the explosion-proof valve 70 is arranged in the explosion-proof valve hole, and the explosion-proof valve 70 is adapted to be arranged with the explosion-proof valve hole.

[0038] As a preferred embodiment, an electronic component 80 is disposed on the inner side of the end surface 21 close to the box body 20 , and the electronic component 80 is immersed in the coolant 40 .

[0039] As a preferred embodiment, a first output terminal 211 and a second output terminal 212 are further provided on the end surface 21, and the first output terminal 211 and the second output terminal 212 are both provided between the explosion-proof valve 70 and the coolant inlet 50; one end of the first output terminal 211 close to the box body 20 and one end of the second output terminal 212 close to the box body 20 are both immersed in the coolant 40.

[0040] As a preferred implementation, the first output terminal 211 is a positive terminal, and the second output terminal 212 is a negative terminal; or, the first output terminal 211 is a negative terminal, and the second output terminal 212 is a positive terminal.

[0041] As a preferred embodiment, the coolant 40 is a fluorinated liquid. Using a fluorinated liquid as a coolant is economical and can ensure the effects of cooling and insulation.

[0042] As a preferred embodiment, the cover plate 10 and the box body 20 are sealed and connected by a sealing structure (not marked in the figure); the sealing structure is foamed silicone. In this way, the sealing of the overall structure of the box body can be ensured. In the embodiment of the present application, the box body as a whole adopts an IP67 airtight structure, and the risk connection is fully welded to achieve the connection seal and then sealed with glue, which can further ensure the sealing performance of the overall box body.

[0043] As a preferred embodiment, the battery cell module 30 includes at least two module units 31 arranged in parallel; each of the module units 31 is provided with 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 arranged close to the end face 21; the first fixed end plate 311 and the second fixed end plate 312 are respectively arranged in contact with the module unit 31.

[0044] As a preferred embodiment, a first fixing belt 313 and a second fixing belt 314 are provided on the outer side of each module unit 31; the first fixing belt 313 is sleeved on the upper part of the module unit 31, and one end of the first fixing belt 313 is fixedly connected to the first fixed end plate 311, and the other end is fixedly connected to the second fixed end plate 312;

[0045] The second fixing belt 314 is sleeved on the lower part of the module unit 31 , and one end of the second fixing belt 314 is fixedly connected to the first fixing end plate 311 , and the other end of the second fixing belt 314 is fixedly connected to the second fixing end plate 312 .

[0046] In the embodiment of the present application, the first fixed end plate 311 and the second fixed end plate 312 are both provided with snap-ons for fixing the first fixing belt 313 and the second fixing belt 314. The first fixing belt 313 and the second fixing belt 314 are snapped on the corresponding snap-ons, which makes the fixing convenient and quick, simplifies the fixing setting of the fixing belt, reduces the volume increased by the fixing, and thus improves the volume energy density of the box structure.

[0047] As a preferred embodiment, a first insulating plate 315 is provided on the side of the module unit 31 close to the cover plate 10, and the first insulating plate 315 is provided between the module unit 31 and the first fixing belt 313 / the second fixing belt 314, and the first insulating plate 315 is respectively provided in contact with the module unit 31 and the first fixing belt 313 / the second fixing belt 314.

[0048] As a preferred embodiment, a second insulating plate 316 is provided on the side of the module unit 31 close to the bottom of the box body 20, and the second insulating plate 316 is provided between the module unit 31 and the first fixing belt 313 / the second fixing belt 314, and the second insulating plate 316 is respectively provided in contact with the module unit 31 and the first fixing belt 313 / the second fixing belt 314.

[0049] As a preferred embodiment, the first insulating plate 315 and the second insulating plate 316 are respectively configured to match the module unit 31 .

[0050] As a preferred embodiment, a liquid-leakage-proof tray 317 is further provided on the side of the module unit 31 close to the bottom of the box body 20, and the liquid-leakage-proof tray 317 is sleeved on the side of the module unit 31 close to the bottom of the box body 20; the liquid-leakage-proof tray 317 is adapted to be matched with the module unit 31.

[0051] As a preferred embodiment, each of the module units 31 includes a plurality of battery cells 318 arranged in parallel; in the same module unit 31 , adjacent battery cells 318 are connected by a wavy connecting piece 90 .

[0052] The present application sets a cooling liquid in the box body, sets an explosion-proof valve on the end face of the box body, and immerses the battery module and electronic components in the cooling liquid, so as to achieve overall cooling of the battery module and electronic components and isolate them from oxygen, and can effectively solve the problems of heating of electronic components, heating of battery preparation discharge, and heating of output terminal connection. After the battery cell thermal runaway, the generated gas can be quickly and effectively discharged through the explosion-proof valve outside the box body to prevent the module from exploding. The structure of the present application can effectively solve the thermal and safety problems of the PACK itself, and can effectively isolate the air when the battery cell thermal runaway occurs, thereby effectively reducing the risk of PACK fire. The present application has a simple structure, is easy to disassemble and assemble, and is easy to maintain. It can effectively extend the service life of the battery, has high practicality and economy, and has a wide range of applications. It can be produced and used as a general product.

[0053] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0054] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0055] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquid-cooled flooded UPS battery structure, characterized in that: It comprises a cover plate, a box body, a battery module and a coolant; the battery module is arranged in the box body; the coolant is contained in the box body, and the battery module is immersed in the coolant; the cover plate covers the top of the box body; One end surface of the box body is provided with a coolant inlet, a coolant outlet and an explosion-proof valve which are independent of each other; the coolant inlet and the coolant outlet are respectively connected to the box body; the coolant inlet and the coolant outlet are both arranged near the bottom of the end surface, and the explosion-proof valve is arranged near the top of the end surface.

2. The liquid-cooled flooded UPS battery structure according to claim 1, characterized in that: The coolant inlet is arranged in parallel with the coolant outlet, and the coolant inlet is arranged at one end of the end surface, and the coolant outlet is arranged at the other end of the end surface; The end surface is provided with an explosion-proof valve hole penetrating the end surface, the explosion-proof valve is arranged in the explosion-proof valve hole, and the explosion-proof valve is adapted to be arranged with the explosion-proof valve hole.

3. The liquid-cooled flooded UPS battery structure according to claim 1, characterized in that: The end surface is provided with electronic components on the inner side close to the box body, and the electronic components are immersed in the cooling liquid.

4. The liquid-cooled flooded UPS battery structure according to claim 1, characterized in that: A first output terminal and a second output terminal are also provided on the end surface, and the first output terminal and the second output terminal are both provided between the explosion-proof valve and the coolant inlet; one end of the first output terminal close to the box body and one end of the second output terminal close to the box body are both immersed in the coolant.

5. The liquid-cooled submerged 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 flooded UPS battery structure according to claim 1, characterized in that: The coolant is a fluorinated liquid; the cover plate and the box body are sealed and connected via a sealing structure; the sealing structure is foamed silica gel.

7. The liquid-cooled flooded UPS battery structure according to claim 1, characterized in that: The battery cell module includes at least two module units arranged in parallel; a first fixed end plate is provided at one end of each module unit, and a second fixed end plate is provided at the other end; the first fixed end plate is arranged close to the end face; the first fixed end plate and the second fixed end plate are respectively arranged in contact with the module unit.

8. The liquid-cooled submerged UPS battery structure according to claim 7, characterized in that: A first fixing belt and a second fixing belt are provided on the outer side of each module unit; the first fixing belt is sleeved on the upper part of the module unit, and one end of the first fixing belt is fixedly connected to the first fixed end plate, and the other end is fixedly connected to the second fixed end plate; The second fixing belt is sleeved on the lower part of the module unit, and one end of the second fixing belt is fixedly connected to the first fixed end plate, and the other end of the second fixing belt is fixedly connected to the second fixed end plate.

9. The liquid-cooled submerged UPS battery structure according to claim 8, characterized in that: A first insulating plate is provided on the side of the module unit close to the cover plate, the first insulating plate is provided between the module unit and the first fixing belt / the second fixing belt, and the first insulating plate is respectively provided in contact with the module unit and the first fixing belt / the second fixing belt; A second insulating plate is provided on the side of the module unit close to the bottom of the box body, the second insulating plate is provided between the module unit and the first fixing belt / the second fixing belt, and the second insulating plate is respectively provided in contact with the module unit and the first fixing belt / the second fixing belt.

10. The liquid-cooled flooded 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; The side of the module unit close to the bottom of the box body is also provided with a liquid leakage prevention tray, and the liquid leakage prevention tray is sleeved on the side of the module unit close to the bottom of the box body; the liquid leakage prevention tray is adapted to the module unit; Each of the module units comprises a plurality of battery cells arranged in parallel; in the same module unit, adjacent battery cells are connected by a wavy connecting sheet.

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