Liquid cooling module and energy storage system

Abstract

The utility model discloses a liquid cooling module and an energy storage system, the liquid cooling module comprises a water chilling unit and a liquid cooling pipeline, the water chilling unit comprises a water outlet and a water return port, the water outlet and the water return port are communicated through the liquid cooling pipeline, a water removal pipe is sleeved outside the liquid cooling pipeline, and at least one air inlet is arranged on the water removal pipe. The battery module and the liquid cooling module are located in the box body, the battery module comprises a battery bin and at least one battery pack installed in the battery bin, the battery pack is provided with a liquid cooling plate, the liquid cooling plate comprises a liquid inlet and a liquid outlet, and at least part of a liquid cooling pipeline is arranged in the battery bin; a liquid inlet and a liquid outlet of the liquid cooling plate are respectively communicated with a water outlet and a water return port of the water chilling unit through liquid cooling pipelines, and at least part of the water removal pipe is positioned in the battery compartment. The battery compartment can be dehumidified without independently adding a dehumidification module, the structure is simple, the space is saved, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage, and specifically relates to a liquid cooling module and an energy storage system. Background Art

[0002] With the continuous development of power energy storage technology and the continuous increase in market demand, energy storage systems have gradually become the main products on the market. Conventional liquid-cooled energy storage systems have the characteristics of large heat exchange and stable system operation. However, when the liquid cooling module cools the battery module, its own temperature is often lower than the ambient temperature, and it is difficult to achieve complete insulation. When the temperature of the liquid cooling plate and the liquid cooling pipe is low and the humidity in the battery compartment is high, condensation will occur on the liquid cooling plate and the liquid cooling pipe. If the condensation is not handled in time, it may easily cause leakage or damage to components in case of contact with live components, thus leading to dangerous accidents. In addition, if the electrical components in the battery compartment run in a high humidity environment for a long time, the service life of the components will be shortened.

[0003] In order to meet the dehumidification requirements of the energy storage system, the prior art generally adopts the configuration of an independent dehumidification module. Although this method can achieve the dehumidification function, it requires the additional configuration of the dehumidification module, which will occupy the limited space of the energy storage system and make the overall structure complicated.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid cooling module and an energy storage system, which can dehumidify the battery compartment without the need for a separate dehumidification module, and has a simple structure, saves space and reduces costs.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A liquid cooling module, the liquid cooling module includes a chiller and a liquid cooling pipe, the chiller includes a water outlet and a water return port, the water outlet and the water return port are connected through the liquid cooling pipe, the liquid cooling pipe is externally sheathed with a water removal pipe, and the water removal pipe is provided with at least one air inlet.

[0008] In one or more embodiments of the present invention, at least one air outlet is provided on the water removal pipe, and the liquid cooling module further includes at least one fan, and the fan is connected to the air outlet through a ventilation pipe.

[0009] In one or more embodiments of the present invention, the air inlet and the air outlet are respectively located on two sides of the water removal pipe.

[0010] In one or more embodiments of the present invention, the water-removing pipe is sleeved outside the liquid cooling pipe and close to the water outlet.

[0011] In one or more embodiments of the present invention, a plurality of air inlets are provided, and the plurality of air inlets are spaced apart along the extension direction of the water removal pipe.

[0012] In one or more embodiments of the present invention, a first drain valve is provided at the bottom of the water removal pipe; and / or,

[0013] A second drain valve is provided at the bottom of the liquid cooling pipeline.

[0014] Another specific embodiment of the present invention provides a technical solution as follows:

[0015] An energy storage system, the energy storage system includes a box body and a battery module located in the box body and a liquid cooling module as described above, the battery module includes a battery compartment and at least one battery pack installed in the battery compartment, a liquid cooling plate is provided on the battery pack, the liquid cooling plate includes a liquid inlet and a liquid outlet, a liquid cooling pipe is at least partially arranged in the battery compartment, the liquid inlet and the liquid outlet of the liquid cooling plate are respectively connected to the water outlet and the return water outlet of a chiller through the liquid cooling pipe, and the water removal pipe is at least partially located in the battery compartment.

[0016] In one or more embodiments of the present utility model, the liquid cooling pipe includes a first liquid cooling pipe, the first liquid cooling pipe includes a first water outlet pipe and a first water return pipe, the first water outlet pipe is respectively connected to the liquid inlet and the water outlet, and the first water return pipe is respectively connected to the liquid outlet and the water return.

[0017] In one or more embodiments of the present invention, the water pipe is arranged outside the first water outlet pipe near the water outlet, and the first water outlet pipe is coated with a first insulation layer outside the first water outlet pipe away from the water outlet; and / or,

[0018] The first water return pipe is coated with a second insulation layer on the outside; and / or,

[0019] The surface of the liquid cooling plate opposite to the battery cells in the battery pack is coated with a third thermal insulation layer.

[0020] In one or more embodiments of the present invention, the liquid cooling pipe also includes a second liquid cooling pipe and a third liquid cooling pipe, the second liquid cooling pipe includes a second water outlet pipe and a second water return pipe, the second water outlet pipe is connected to the first water outlet pipe, and the second water return pipe is connected to the first water return pipe; the third liquid cooling pipe includes a third water outlet pipe and a third water return pipe, the third water outlet pipe is respectively connected to the liquid inlet and the second water outlet pipe, and the third water return pipe is respectively connected to the liquid outlet and the second water return pipe.

[0021] In one or more embodiments of the present invention, a plurality of the second liquid-cooling pipes are distributed at intervals along the horizontal direction, and a plurality of the third liquid-cooling pipes are distributed at intervals along the vertical direction.

[0022] In one or more embodiments of the present invention, the second liquid cooling pipe and / or the third liquid cooling pipe is coated with a fourth thermal insulation layer.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model provides a liquid cooling module and an energy storage system. The liquid cooling pipe not only serves as a cooling element, but also serves as a dehumidification element. The dehumidification pipe collects condensation formed on the outside of the liquid cooling pipe. The battery compartment can be dehumidified without the need to install a dehumidification module separately. The utility model has a simple structure, saves space, reduces costs, has low energy consumption, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the liquid cooling module in the first embodiment of the utility model;

[0027] Figure 2 It is a partial structural schematic diagram of the liquid cooling pipeline and the water removal pipe in the first embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the energy storage system in the second embodiment of the present utility model;

[0029] Figure 4 for Figure 3 A magnified view of the local structure at point A in the middle;

[0030] Figure 5 It is a schematic diagram of the partial structure of the energy storage system in the second embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.

[0035] Embodiment 1:

[0036] Reference Figure 1-2 As shown, the liquid cooling module in one embodiment of the present invention includes a chiller 21 and a liquid cooling pipeline 22 .

[0037] The chiller 21 includes a water outlet 211 and a water return port 212, which are connected through a liquid cooling pipe 22. A water removal pipe 23 is provided on the outside of the liquid cooling pipe 22, and at least one air inlet 231 is provided on the water removal pipe 23. When condensate is introduced into the liquid cooling pipe 22 through the chiller 21, air condenses into condensate in the liquid cooling pipe 22 due to contact with the liquid cooling pipe 22. A water removal pipe 23 is provided on the outside of the liquid cooling pipe 22 to collect condensate. According to this design, the liquid cooling pipe not only serves as a cooling element, but also as a dehumidification element, and the pool can be dehumidified without the need to install a dehumidification module separately.

[0038] In order to discharge the condensate collected in the dehumidification pipe 23 out of the dehumidification pipe 23 and prevent the condensate from being discharged from the dehumidification pipe 23 through the air inlet 231, refer to Figure 2 As shown, the bottom of the dewatering pipe 23 in this embodiment is provided with a first drain valve 233. In the working state, the first drain valve 233 is in a normally closed state, and when the condensation collected in the dewatering pipe 23 needs to be discharged, the first drain valve 233 is in an open state.

[0039] Optionally, in order to facilitate air to enter the dehumidification pipe 23 more conveniently so as to collect condensation to achieve dehumidification, refer to Figure 1 As shown, in this embodiment, a plurality of air inlets 231 are provided, and the plurality of air inlets 231 are arranged at intervals along the extension direction of the water removal pipe 23 .

[0040] Optionally, in order to increase the air flow rate, the dewatering pipe 23 in this embodiment is provided with at least one air outlet 232, and the liquid cooling module further includes at least one fan 4, which is connected to the air outlet 232 through the ventilation pipe 41. It is easy to imagine that when the liquid cooling module is set in the energy storage system, this design can make the battery compartment 31 (see Figure 3 ) The air in the room moves quickly.

[0041] For example, refer to Figure 1 As shown, in this embodiment, two air outlets 232 are provided on the dewatering pipe 23, and two fans 4 are provided. The two fans 4 are arranged in close contact with each other, and the two fans 4 are respectively connected to the corresponding air outlets 232 through two ventilation pipes 41. This can speed up the efficiency of air flow. Preferably, when there are multiple air inlets 231, the multiple air inlets 231 are arranged at intervals along the extension direction of the dewatering pipe 23, and the air outlet 232 connected to one of the fans 4 is arranged in the middle of the dewatering pipe 23, and the air outlet 232 connected to the other fan 4 is arranged at the dewatering pipe 23 away from the chiller 21, the air flow is more uniform.

[0042] Of course, the present application is not limited thereto, and the dewatering pipe 23 may be provided with only one air outlet 232, and one fan 4 may be provided, and the fan 4 is connected to the air outlet 232 through a ventilation pipe 41. Of course, in order to further improve the air flow efficiency, the dewatering pipe 23 may be provided with multiple air outlets 232, and multiple fans 4 may be provided in the same number as the air outlets 232, and each fan 4 is connected to the corresponding air outlet 232 through the corresponding ventilation pipe 41.

[0043] Furthermore, in order to fully disturb the air, refer to Figure 1 As shown, the air inlet 231 and the air outlet 232 in this embodiment are respectively located on both sides of the dewatering pipe 23. The existence of turbulence increases the residence time of the air in the dewatering pipe 23 so as to dehumidify the humid air. It is easy to associate that when the liquid cooling module is set in the energy storage system, this design can make the air in the battery compartment 31 fully turbulent.

[0044] Optionally, since the temperature of the outer wall of the liquid cooling pipe 22 near the water outlet 211 is relatively low, the air condenses into water droplets at a relatively fast speed when in contact with the liquid cooling pipe 22. Figure 1 As shown, the dehumidification pipe 23 is sleeved outside the liquid cooling pipe 22 near the water outlet 211 to improve the dehumidification effect.

[0045] Optionally, in order to facilitate the replacement of condensate, a second drain valve 2213 is provided on the liquid cooling pipe 22 in this embodiment.

[0046] Embodiment 2:

[0047] Reference Figure 3 to Figure 5 As shown, the energy storage system in one embodiment of the utility model includes a box body 1, a battery module 3 located in the box body 1, and a liquid cooling module 2 as described in the first embodiment.

[0048] The battery module 3 includes a battery compartment 31 and at least one battery pack 32 installed in the battery compartment 31 . A liquid cooling plate 321 is provided on the battery pack 32 . The liquid cooling plate 321 includes a liquid inlet 3211 and a liquid outlet 3212 .

[0049] The liquid cooling pipe 22 is at least partially disposed in the battery compartment 31 . The liquid inlet 3211 and the liquid outlet 3212 of the liquid cooling plate 321 are respectively connected to the water outlet 211 and the water return port 212 of the chiller 21 through the liquid cooling pipe 22 . The water removal pipe 23 is at least partially located in the battery compartment 31 .

[0050] The energy storage system in this embodiment uses the liquid cooling pipe 22 as a dehumidification element. The air in the battery compartment 31 can enter the space between the dehumidification pipe 23 and the liquid cooling pipe 22 through the air inlet 231. The air contacts the liquid cooling pipe 22 and condenses into condensation in the liquid cooling pipe 22. The dehumidification pipe 23 is arranged outside the liquid cooling pipe 22 to collect the condensation. According to this design, the dehumidification effect can be achieved without adding a separate dehumidification module. The design is simple, the system space is fully utilized, and the equipment cost is reduced.

[0051] Optional, combined with Figure 1 As shown, when there is only one battery pack 32, the liquid cooling pipe 22 in this embodiment includes a first liquid cooling pipe 221, and the first liquid cooling pipe 221 includes a first water outlet pipe 2211 and a first water return pipe 2212. The first water outlet pipe 2211 is respectively connected to the liquid inlet 3211 and the water outlet 211, and the first water return pipe 2212 is respectively connected to the liquid outlet 3212 and the water return port 212. According to this design, the condensate can flow from the water outlet 211 of the chiller 21 through the first water outlet pipe 2211, then through the liquid cooling plate 321, then through the first water return pipe 2212, and finally flow back to the chiller 21, so that the condensate is sent to the liquid cooling plate 321 to cool and dissipate the heat of the battery cells 322 of the battery pack 32.

[0052] In order to better condense condensation, the dewatering pipe 23 in this embodiment is sleeved outside the first water outlet pipe 2211 near the water outlet 211. In order to prevent the humid air from directly contacting the pipe section of the first water outlet pipe 2211, the first water return pipe 2212 and the liquid cooling plate 321 without the dewatering pipe 23 during the dehumidification process and condensing condensation, and ultimately failing to collect the condensation, the first water outlet pipe 2211 in this embodiment is coated with a first insulation layer (not shown) on the outside away from the water outlet 211, the first water return pipe 2212 is coated with a second insulation layer (not shown), and the surface of the liquid cooling plate 321 opposite to the battery cells 322 in the battery pack 32 is coated with a third insulation layer (not shown).

[0053] Preferably, when the condensate in the chiller 21 is used to the limit and can no longer cool the battery pack 32, the condensate needs to be replaced. Figure 2 As shown, in this embodiment, the bottom of the first water outlet pipe 2211 and the first water return pipe 2212 are both provided with a second drain valve 2213, and the two second drain valves 2213 are secondly arranged outside the battery compartment 31 to ensure that the condensate in the liquid cooling pipe 22 will not penetrate into the battery compartment 31 when it is discharged. Of course, the present application is not limited to this, and when only the second drain valve 2213 is arranged at the bottom of the first water outlet pipe 2211 or the first water return pipe 2212, the waste condensate in the condensation pipe 22 can also be discharged to replace new condensate.

[0054] Optionally, in order to facilitate the liquid inlet 3211 and the liquid outlet 3212 of the liquid cooling plate 321 to be connected to the chiller 21 through the liquid cooling pipe 22, refer to Figure 5 As shown, the liquid cooling pipe 22 in this embodiment also includes a second liquid cooling pipe 222 and a third liquid cooling pipe 223. The second liquid cooling pipe 222 includes a second water outlet pipe 2221 and a second water return pipe 22. The second water outlet pipe 2221 is connected to the first water outlet pipe 2211, and the second water return pipe 22 is connected to the first water return pipe 2212; the third liquid cooling pipe 223 includes a third water outlet pipe 2231 and a third water return pipe 2232. The third water outlet pipe 2231 is respectively connected to the liquid inlet 3211 and the second water outlet pipe 2221, and the third water return pipe 2232 is respectively connected to the liquid outlet 3212 and the second water return pipe 22.

[0055] Preferably, refer to Figure 3 Combined with Figure 5 As shown, when multiple battery packs 32 are provided and distributed in an array, multiple second liquid-cooling pipes 222 in this embodiment are spaced apart in the horizontal direction, wherein the number of columns of the second liquid-cooling pipes 222 is equal to the number of columns of the battery packs 32; multiple third liquid-cooling pipes 223 are spaced apart in the vertical direction, wherein the number of rows of the third liquid-cooling pipes 223 is equal to the number of rows of the battery packs 32.

[0056] Preferably, in order to prevent the humid air from directly contacting the second liquid cooling pipe 222 and the third liquid cooling pipe 223 during the dehumidification process and condensing condensation, and ultimately being unable to collect the condensation, the second liquid cooling pipe 222 and the third liquid cooling pipe 223 in this embodiment are coated with a fourth insulation layer (not shown). Exemplarily, the first insulation layer, the second insulation layer, the third insulation layer, and the fourth insulation layer in this embodiment can be insulation cotton, or an insulating rubber layer, or a foam board or other structures.

[0057] The working principle of the utility model is:

[0058] When the sensor detects that the humidity inside the battery compartment 31 is greater than the set value, the system turns on the dehumidification mode, that is, the chiller 21 starts cooling, and the fan 4 starts working. Driven by the fan 4, the air inside the battery compartment 31 will enter the dehumidification pipe 23 from the air inlet 231 and then flow out from the air outlet 232, and then form condensation on the surface of the condensation pipe, accumulate and drip into the dehumidification pipe 23, and then the accumulated condensation is discharged through the first drain valve 233 to complete the dehumidification.

[0059] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0060] The utility model provides a liquid cooling module and an energy storage system. The liquid cooling pipe not only serves as a cooling element, but also serves as a dehumidification element. The dehumidification pipe collects condensation formed on the outside of the liquid cooling pipe. The battery compartment can be dehumidified without the need to install a dehumidification module separately. The utility model has a simple structure, saves space, reduces costs, has low energy consumption, and is easy to maintain.

[0061] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 modes that can be understood by those skilled in the art.

Claims

1. A liquid cooling module, characterized in that: The liquid cooling module includes a chiller and a liquid cooling pipe. The chiller includes a water outlet and a water return port. The water outlet and the water return port are connected through the liquid cooling pipe. A water removal pipe is provided on the outside of the liquid cooling pipe. At least one air inlet is provided on the water removal pipe.

2. The liquid cooling module according to claim 1, characterized in that: The dewatering pipe is provided with at least one air outlet, and the liquid cooling module further comprises at least one fan, which is connected to the air outlet through a ventilation pipe.

3. The liquid cooling module according to claim 2, characterized in that: The air inlet and the air outlet are respectively located on both sides of the water removal pipe.

4. The liquid cooling module according to claim 1, characterized in that: The water pipe sleeve is arranged outside the liquid cooling pipe near the water outlet.

5. The liquid cooling module according to claim 1, characterized in that: There are multiple air inlets, and the multiple air inlets are arranged at intervals along the extension direction of the water removal pipe.

6. The liquid cooling module according to claim 1, characterized in that: A first drain valve is provided at the bottom of the dewatering pipe; and / or, A second drain valve is provided at the bottom of the liquid cooling pipeline.

7. An energy storage system, characterized in that: The energy storage system includes a box body and a battery module located in the box body and a liquid cooling module as described in any one of claims 1 to 6, the battery module includes a battery compartment and at least one battery pack installed in the battery compartment, a liquid cooling plate is provided on the battery pack, the liquid cooling plate includes a liquid inlet and a liquid outlet, a liquid cooling pipe is at least partially arranged in the battery compartment, the liquid inlet and the liquid outlet of the liquid cooling plate are respectively connected to the water outlet and the return water outlet of the chiller through the liquid cooling pipe, and the water removal pipe is at least partially located in the battery compartment.

8. The energy storage system according to claim 7, characterized in that: The liquid cooling pipeline includes a first liquid cooling pipeline, and the first liquid cooling pipeline includes a first water outlet pipe and a first water return pipe, the first water outlet pipe is respectively connected to the liquid inlet and the water outlet, and the first water return pipe is respectively connected to the liquid outlet and the water return.

9. The energy storage system according to claim 8, characterized in that: The water pipe sleeve is arranged outside the first water outlet pipe near the water outlet, and the first water outlet pipe is coated with a first insulation layer outside the first water outlet pipe away from the water outlet; and / or, The first water return pipe is coated with a second insulation layer on the outside; and / or, The surface of the liquid cooling plate opposite to the battery cells in the battery pack is coated with a third thermal insulation layer.

10. The energy storage system according to claim 8, characterized in that: The liquid cooling pipeline also includes a second liquid cooling pipeline and a third liquid cooling pipeline. The second liquid cooling pipeline includes a second water outlet pipe and a second water return pipe. The second water outlet pipe is connected to the first water outlet pipe, and the second water return pipe is connected to the first water return pipe. The third liquid cooling pipeline includes a third water outlet pipe and a third water return pipe. The third water outlet pipe is respectively connected to the liquid inlet and the second water outlet pipe, and the third water return pipe is respectively connected to the liquid outlet and the second water return pipe.

11. The energy storage system according to claim 10, characterized in that: A plurality of the second liquid cooling pipes are distributed at intervals along the horizontal direction, and a plurality of the third liquid cooling pipes are distributed at intervals along the vertical direction.

12. The energy storage system according to claim 10, characterized in that: The second liquid cooling pipe and / or the third liquid cooling pipe is coated with a fourth thermal insulation layer.

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