CN217848078U - Battery package liquid cooling device and liquid cooling energy storage system - Google Patents

Abstract

The utility model relates to an energy storage technology field especially relates to a battery package liquid cooling plant and liquid cooling energy storage system. This battery package liquid cooling plant includes the input pipeline, output pipeline and discharge valve subassembly, the export of input pipeline is linked together with the import of circulation passageway on the battery package, the export of circulation passageway is linked together on output pipeline and the battery package, the highest end intercommunication of input pipeline has visual pipeline, and the highest end of visual pipeline is parallel and level with the highest end of output pipeline, the discharge valve subassembly sets up the highest end at output pipeline, not only be convenient for operating personnel observe the filling condition and the bubble condition of coolant liquid in the pipeline, guarantee the reliability of annotating the liquid, can also effectively get rid of the bubble in the pipeline, guarantee the accurate coolant liquid that pours into. Liquid cooling energy storage system is through using above-mentioned battery package liquid cooling device, and the reliability of annotating the liquid is guaranteed to the injection condition and the bubble condition of coolant liquid in not only being convenient for observe the pipeline, can also effectively get rid of the bubble in the pipeline, guarantees accurate injection coolant liquid.

Description

Battery package liquid cooling device and liquid cooling energy storage system

Technical Field

The utility model relates to an energy storage technology field especially relates to a battery package liquid cooling plant and liquid cooling energy storage system.

Background

The inside of liquid cooling energy storage system is provided with the battery cluster that the multiunit set up side by side, and every battery cluster comprises a plurality of battery packages of arranging from top to bottom, and the battery package can produce certain heat in the course of the work, for the normal work of guaranteeing each battery package, is provided with the liquid cooling device in the liquid cooling energy storage system usually, and the liquid cooling device lets in the coolant liquid through the pipeline in to the circulation passageway of each battery package to cool down for each battery package.

The insufficient or excessive addition of the cooling liquid in the liquid cooling device pipeline influences the cooling condition of the whole liquid cooling energy storage system, and further influences the working efficiency of the battery pack. In order to accurately control the adding amount of the cooling liquid, the prior art generally adopts the variation situation of the pressure of the liquid cooling unit as a reference, or determines the adding amount of the cooling liquid according to the experience of an operator. The liquid cooling unit pressure judging mode is limited by the resistance of the pipeline and the flow rate of the cooling liquid, when the flow rate of the cooling liquid in the pipeline is high, bubbles in the pipeline are increased, the pressure of the pipeline is increased easily, and therefore misjudgment of the liquid cooling unit is achieved, and the cooling liquid is not added sufficiently. In addition, the pipeline in the existing liquid cooling device is not convenient for operators to observe the injection condition of the cooling liquid, and if the experience judgment of the operators is only adopted, the artificial influence is large, and the insufficient or excessive addition of the cooling liquid is easy to cause.

Therefore, it is desirable to provide a liquid cooling apparatus and a liquid cooling energy storage system for a battery pack to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package liquid cooling plant and liquid cooling energy storage system not only is convenient for observe the injection condition and the bubble condition of coolant liquid in the pipeline, guarantees the reliability of annotating the liquid, can also effectively get rid of the bubble in the pipeline, guarantees accurate injection cooling liquid.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery pack liquid cooling device comprising:

the battery pack circulation device comprises an input pipeline and an output pipeline, wherein the highest end of the input pipeline is communicated with a visual pipeline, the highest end of the visual pipeline is flush with the highest end of the output pipeline, an outlet of the input pipeline is communicated with an inlet of a circulation channel on a battery pack, and the output pipeline is communicated with an outlet of the circulation channel on the battery pack; and

and the exhaust valve assembly is arranged at the highest end of the output pipeline.

Preferably, the exhaust valve assembly comprises an automatic exhaust valve and a manual exhaust valve which are arranged at the highest end of the output pipeline at intervals, and the exhaust efficiency of the manual exhaust valve is greater than that of the automatic exhaust valve; and when the value of the bubbles in the output pipeline reaches a preset value, opening the manual exhaust valve.

As preferred scheme, battery package liquid cooling plant still includes the liquid cooling unit, the input line includes:

the input main pipeline is communicated with the outlet of the liquid cooling unit and is arranged at the bottom of a battery cluster formed by vertically arranging a plurality of battery packs;

the input branch pipes are communicated with the input main pipeline at one end and extend upwards from the connecting ends of the input branch pipes and the input main pipeline to the other ends of the input branch pipes, and the visual pipeline is communicated with the highest end of each input branch pipe; and

a plurality of water inlet hose, every equal interval intercommunication is a plurality of on the input lateral pipe water inlet hose, it is same every on the input lateral pipe water inlet hose's export respectively with one correspond on the battery cluster the import of circulation passageway is linked together.

As a preferred scheme, the input main pipeline comprises an input stainless steel hose and an input stainless steel pipe which are communicated, the input stainless steel hose is communicated with an outlet of the liquid cooling unit, and one end of each input branch pipe is communicated with the input stainless steel pipe.

Preferably, the input branch pipe comprises an input corrugated hose, a first connector and a first water valve, the input corrugated hose is communicated with the input main pipeline through the first water valve, the input corrugated hose is communicated with the water inlet hose through the first connector, and the highest end of the input corrugated hose is communicated with the visual pipeline.

Preferably, the first connector is a three-way connector, connectors at the upper end and the lower end of the first connector are connected with the two corresponding sections of the input corrugated hoses through a cold pressing process, and a connector at the middle end of the first connector is connected with the water inlet hose.

As preferred scheme, the flexible pipe of intaking includes the corrugated pipe and the fast plug of intaking, the both ends of the corrugated pipe of intaking all are provided with the fast plug of intaking, the one end of the corrugated pipe of intaking is passed through the fast plug of intaking with the joint of first connector middle end is connected, the other end of the corrugated pipe of intaking passes through the fast plug of intaking with the import of circulation channel is connected.

As preferred scheme, battery package liquid cooling plant still includes the liquid cooling unit, output line includes:

the output main pipeline is communicated with an inlet of the liquid cooling unit, part of the output main pipeline is arranged at the top of a battery cluster formed by vertically arranging a plurality of battery packs, the highest end of the output main pipeline is flush with the highest end of the visual pipeline, one end, close to the liquid cooling unit, of the highest end of the output main pipeline is provided with the automatic exhaust valve, and one end, far away from the liquid cooling unit, of the highest end of the output main pipeline is provided with the manual exhaust valve;

a plurality of output branch pipes, one end of each of which is communicated with the output main pipeline and extends downward from a connection end thereof with the output main pipeline to the other end thereof; and

and each output branch pipe is communicated with a plurality of water outlet hoses at intervals, and the inlet of each water outlet hose on the same output branch pipe is respectively communicated with the outlet of the corresponding flow channel on one battery cluster.

Preferably, the output main pipeline comprises:

the output stainless steel hose is communicated with an inlet of the liquid cooling unit; and

the automatic exhaust valve is arranged at the highest end of the output stainless steel pipe, and the automatic exhaust valve and the manual exhaust valve are arranged at intervals.

Preferably, the output branch pipe comprises an output corrugated hose, a second connector and a second water valve, the output corrugated hose is communicated with the output main pipeline through the second water valve, and the output corrugated hose is communicated with the water outlet hose through the second connector.

As a preferred scheme, the second connector is a three-way joint, the joints at the upper end and the lower end of the second connector are connected with the two corresponding sections of the output corrugated hoses through a cold pressing process, and the joint at the middle end of the second connector is connected with the water outlet hose.

As a preferred scheme, the water outlet hose comprises a water outlet corrugated hose and a water outlet quick plug, the two ends of the water outlet corrugated hose are respectively provided with the water outlet quick plug, one end of the water outlet corrugated hose is connected with the joint at the middle end of the second connector through the water outlet quick plug, and the other end of the water outlet corrugated hose is connected with the outlet of the circulation channel through the water outlet quick plug.

The utility model provides a liquid cooling energy storage system, includes a plurality of battery clusters that set up side by side, every the battery cluster all includes a plurality of battery packages of arranging from top to bottom, liquid cooling energy storage system still includes as above battery package liquid cooling plant, battery package liquid cooling plant is configured into every the battery package cooling.

The utility model has the advantages that:

the utility model provides a battery package liquid cooling plant has visual pipeline through the highest end intercommunication at input pipeline, and the highest end of visual pipeline is parallel and level with the highest end of output pipeline, and the operating personnel of being convenient for observes the filling condition and the bubble condition of coolant liquid in the pipeline through visual pipeline, guarantees the reliability of annotating the liquid, is convenient for the during operation simultaneously and observes battery package liquid cooling plant internal state. In addition, because the bubble in the pipeline can be in the state that rises always, through the top with the setting of discharge valve subassembly at output pipeline for the bubble in the pipeline rises always at the circulation in-process, until piling up at output pipeline's top, the bubble of piling up here passes through the discharge valve subassembly and discharges, has got rid of the bubble in the pipeline effectively, thereby guarantees the normal judgement of liquid cooling unit to pressure, guarantees accurate injection coolant liquid, ensures simultaneously that the operation in-process bubble can effectively be got rid of.

The utility model also provides a liquid cooling energy storage system, through using above-mentioned battery package liquid cooling device, the injection condition and the bubble condition of coolant liquid in the operating personnel observation pipeline of not only being convenient for guarantee to annotate the reliability of liquid, can also effectively get rid of the bubble in the pipeline, guarantee accurate injection cooling liquid, ensure simultaneously that operation in-process bubble can effectively get rid of.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack liquid cooling device provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an input pipeline provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an input branch pipe provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a water inlet hose provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a vent valve assembly and an output pipeline provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an output branch pipe provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a water outlet hose provided by an embodiment of the present invention.

In the figure:

1. an input pipeline; 11. an input main pipeline; 111. inputting a stainless steel hose; 112. inputting a stainless steel pipe; 12. inputting a branch pipe; 121. a visual pipeline; 122. a first connection head; 123. a first water valve; 124. inputting a corrugated hose; 13. a water inlet hose; 131. a water inlet corrugated hose; 132. a water inlet quick plug;

2. an output pipeline; 21. an output main pipeline; 211. outputting a stainless steel hose; 212. outputting a stainless steel pipe; 22. an output branch pipe; 221. an output bellows; 222. a second connector; 223. a second water valve; 23. a water outlet hose; 231. a water outlet corrugated hose; 232. a water outlet quick plug;

3. a vent valve assembly; 31. an automatic exhaust valve; 32. and (4) manually exhausting the valve.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a liquid cooling energy storage system, mainly used conversion and storage electric energy, and it includes a plurality of battery clusters that set up side by side, and every battery cluster all includes a plurality of battery packages of arranging from top to bottom, and battery package mainly used stores the electric energy.

Because the battery package can produce certain heat in the course of the work, in order to guarantee the normal work of liquid cooling energy storage system, current liquid cooling energy storage system is provided with the liquid cooling device usually, and the liquid cooling device lets in the coolant liquid through the pipeline in to the circulation passageway of each battery package to cool off for each battery package. In addition, when the battery package worked under low temperature environment, the liquid cooling device also can play the effect of heating to the battery package, guarantees the normal work of battery package, realizes the temperature regulation to the battery package. However, the temperature regulation condition of the whole liquid-cooled energy storage system is affected by the insufficient or excessive addition amount of the cooling liquid in the liquid-cooled device pipeline, and further the working efficiency of the battery pack is affected. In order to accurately control the addition amount of the cooling liquid, the prior art generally adopts the change situation of the pressure of the liquid cooling unit as a reference, or determines the addition amount of the cooling liquid according to the experience of an operator. The liquid cooling unit pressure judging mode is limited by the resistance of the pipeline and the flow rate of the cooling liquid, when the flow rate of the cooling liquid in the pipeline is high, bubbles in the pipeline are increased, the pressure of the pipeline is increased easily, and therefore misjudgment of the liquid cooling unit is achieved, and the cooling liquid is not added sufficiently. In addition, the pipeline in the existing liquid cooling device is not convenient for the operator to observe the injection condition of the cooling liquid, and if the experience judgment of the operator is only adopted, the artificial influence is large, and the insufficient or excessive addition of the cooling liquid is easily caused.

In order to solve the above problem, as shown in fig. 1, this embodiment further provides a battery pack liquid cooling apparatus, which is mainly used for cooling each battery pack in a liquid-cooled energy storage system, and includes a liquid cooling unit (not shown in the figure), an input pipeline 1, an output pipeline 2, and an exhaust valve assembly 3, wherein an inlet of the input pipeline 1 is communicated with an outlet of the liquid cooling unit, an outlet of the input pipeline 1 is communicated with an inlet of a circulation channel on the battery pack, an inlet of the output pipeline 2 is communicated with an outlet of the circulation channel on the battery pack, an outlet of the output pipeline 2 is communicated with an inlet of the liquid cooling unit, and the liquid cooling unit can cool down a cooling liquid flowing back from the output pipeline 2 and then enter the input pipeline 1, thereby implementing a cyclic cooling process on the battery pack. The highest end of the input pipeline 1 is communicated with a visual pipeline 121, the highest end of the visual pipeline 121 is flush with the highest end of the output pipeline 2, and the exhaust valve assembly 3 is arranged at the highest end of the output pipeline 2.

Through the most significant end intercommunication at input pipeline 1 there is visual pipeline 121, when input pipeline 1 annotates liquid constantly, visual pipeline 121 begins to appear liquid to along with the continuous injection liquid level of coolant liquid risees, the operating personnel of being convenient for observes through visual pipeline 121 whether the pipeline in the coolant liquid annotate fully and the bubble condition, guarantees the reliability of annotating liquid, is convenient for simultaneously observe battery package liquid cooling plant internal state. In addition, the highest end of visual pipeline 121 and output pipeline 2's highest end looks parallel and level, through setting up discharge valve subassembly 3 at output pipeline 2's highest end, because the bubble in the pipeline can be in the rising state always, make the bubble in the pipeline rise all the time at the circulation in-process, until piling up at output pipeline 2's highest end, the bubble that piles up here passes through discharge valve subassembly 3 and discharges, the bubble in the pipeline has been got rid of effectively, thereby guarantee the normal judgement of liquid cooling unit to pressure, guarantee accurate injection coolant liquid, ensure simultaneously that the operation in-process bubble can effectively be got rid of. It should be noted that, in this embodiment, the visual pipeline 121 may be a pipeline made of a transparent material, for example, a transparent plastic material, so as to ensure that an operator can observe the liquid injection condition of the pipeline and the bubble condition in the pipeline through the visual pipeline 121.

Referring to fig. 2, a specific structure included in the input pipeline 1 is described, as shown in fig. 2, the input pipeline 1 includes a main input pipeline 11, a plurality of branch input pipes 12 and a plurality of water inlet hoses 13, where the main input pipeline 11 is communicated with an outlet of the liquid cooling unit, the main input pipeline 11 is disposed at the bottom of each row of battery clusters, one end of each branch input pipe 12 is communicated with the main input pipeline 11, the branch input pipes 12 extend upwards from a connection end of the branch input pipe with the main input pipeline 11 to the other end thereof, a visible pipeline 121 is communicated with the highest end of each branch input pipe 12, a plurality of water inlet hoses 13 are communicated with each branch input pipe 12 at intervals, an outlet of each water inlet hose 13 on the same branch input pipe 12 is communicated with an inlet of a corresponding flow channel on one battery cluster, and the arrangement mode enables temperature of each battery package to be uniformly reduced, temperature difference among the battery packages is avoided, and cooling effect of the whole liquid cooling energy storage system is improved. In addition, as the highest end of each branch input pipe 12 is communicated with a visible pipeline 121, the liquid filling condition and the bubble condition of each branch input pipe 12 can be observed conveniently.

Preferably, as shown in fig. 2, the input main pipeline 11 includes an input stainless steel hose 111 and an input stainless steel pipe 112, which are communicated with each other, wherein the input stainless steel hose 111 is communicated with the outlet of the liquid cooling unit, and one end of each input branch pipe 12 is communicated with the input stainless steel pipe 112. By designing the input main pipeline 11 to be made of stainless steel, the problems of corrosion and the like of the input main pipeline 11 can be avoided, and the service life of the input main pipeline 11 is ensured. In addition, by designing the input stainless steel hose 111 to be communicated with the outlet of the liquid cooling unit, tolerance can be absorbed in the installation process, and installation is facilitated.

In the present embodiment, as shown in fig. 3, the branched input pipe 12 includes a corrugated input hose 124, a first connector 122 and a first water valve 123, wherein the corrugated input hose 124 is communicated with the stainless steel input pipe 112 through the first water valve 123, the corrugated input hose 124 is communicated with the water input hose 13 through the first connector 122, and the highest end of the corrugated input hose 124 is communicated with the visible pipeline 121. The first water valve 123 is arranged to communicate the input corrugated hose 124 with the input stainless steel pipe 112, and when the battery cluster corresponding to the input branch pipe 12 does not need to be filled with the cooling liquid, the first water valve 123 can be closed, so that the input stainless steel pipe 112 is prevented from filling the cooling liquid into the input branch pipe 12, and the utilization rate of the cooling liquid is improved. In addition, through set up input corrugated hose 124 on input lateral pipe 12, can play the cushioning effect in the transportation vibration process, avoid leading to taking place to connect because of rigid connection and reveal, can also absorb the tolerance at the installation, be convenient for install. Specifically, the input bellows 124 may be a corrugated nylon tube, which has the advantages of abrasion resistance, easy stretch, flexibility, and ease of installation.

It should be noted that the first connector 122 is a three-way connector, and connectors at the upper end and the lower end of the first connector 122 are connected to the two corresponding sections of input corrugated hoses 124 through a cold pressing process, so that the stability and reliability of the connection between the first connector 122 and the two sections of input corrugated hoses 124 can be ensured. Further, a joint at the intermediate end of the first joint 122 is connected to the water inlet hose 13.

Further, as shown in fig. 4, the water inlet flexible pipe 13 includes a water inlet flexible corrugated pipe 131 and a water inlet quick plug 132, wherein both ends of the water inlet flexible corrugated pipe 131 are provided with the water inlet quick plug 132, one end of the water inlet flexible corrugated pipe 131 is connected to the joint at the middle end of the first joint 122 through the water inlet quick plug 132, and the other end of the water inlet flexible corrugated pipe 131 is connected to the inlet of the flow channel through the water inlet quick plug 132. The connection efficiency of the inlet hose 13 with the first connector 122 and the circulation passage is improved by providing the inlet quick plugs 132 at both ends of the inlet bellows 131. In addition, through setting up into corrugated hose 131, can play the cushioning effect in the transportation vibration process, avoid leading to taking place to connect because of rigid connection and reveal, can also be convenient for install at installation absorption tolerance. Specifically, the inlet bellows 131 may be a corrugated nylon tube having advantages of abrasion resistance, easy stretching, flexibility, and easy installation.

Preferably, as shown in fig. 5, the exhaust valve assembly 3 includes an automatic exhaust valve 31 and a manual exhaust valve 32 which are arranged at the highest end of the output pipeline 2 at intervals, wherein the automatic exhaust valve 31 can realize the automatic exhaust process of the pipeline during liquid injection, and can realize the automatic removal of bubbles in the pipeline during liquid injection, because the exhaust efficiency of the manual exhaust valve 32 is greater than that of the automatic exhaust valve 31, when the bubble value in the output pipeline 2 reaches a preset value, the manual exhaust valve 32 is opened, the active exhaust process can be realized, and the liquid injection speed of the pipeline is increased.

Referring now to fig. 5, a specific structure of the output pipeline 2 is described, as shown in fig. 5, the output pipeline 2 includes a main output pipeline 21, a plurality of branch output pipes 22 and a plurality of water outlet hoses 23, wherein the main output pipeline 21 is communicated with an inlet of the liquid cooling unit, a part of the main output pipeline 21 is disposed at the top of each battery cluster, a highest end of the main output pipeline 21 is flush with a highest end of the visible pipeline 121, an automatic exhaust valve 31 is disposed at an end of the highest end of the main output pipeline 21 close to the liquid cooling unit, a manual exhaust valve 32 is disposed at an end of the highest end of the main output pipeline 21 far from the liquid cooling unit, one end of each branch output pipe 22 is communicated with the main output pipeline 21, the branch output pipes 22 extend downward from a connecting end of the branch output pipeline 21 to the other end thereof, the plurality of water outlet hoses 23 are communicated with each other at intervals on each branch output pipe 22, and an inlet of each water outlet hose 23 on the same branch output pipe 22 is communicated with an outlet of a corresponding flow passage on one battery cluster. This mode of setting up makes the cooling even between every battery package, avoids appearing the difference in temperature between each battery package, improves whole liquid cooling energy storage system's cooling effect. In addition, one end of the liquid cooling unit is provided with a manual exhaust valve 32 through being far away from the highest end of the output main pipeline 21, the manual exhaust valve 32 can be opened through manual operation in the liquid injection process, the liquid injection efficiency of the system is improved, one end of the liquid cooling unit, close to the highest end of the output main pipeline 21, is provided with an automatic exhaust valve 31, the cooling liquid of the output pipeline 2 is guaranteed to be uniformly discharged with collected bubbles before flowing back to the liquid cooling unit, and normal circulation of the cooling liquid is further guaranteed.

Preferably, as shown in fig. 5, the output main pipeline 21 includes an output stainless steel hose 211 and an output stainless steel pipe 212, wherein the output stainless steel hose 211 is communicated with the inlet of the liquid cooling unit, the output stainless steel pipe 212 is communicated with the output stainless steel hose 211, one end of each output branch pipe 22 is communicated with the output stainless steel pipe 212, the height of the output stainless steel pipe 212 is higher than that of the output stainless steel hose 211, and the highest end of the output stainless steel pipe 212 is provided with the automatic exhaust valve 31 and the manual exhaust valve 32 at intervals. By designing the output main pipeline 21 to be made of stainless steel, the problems of corrosion and the like of the output main pipeline 21 can be avoided, and the service life of the output main pipeline 21 is ensured. In addition, through designing that output stainless steel hose 211 is linked together with the import of liquid cooling unit, can be at the installation tolerance of installation absorption, be convenient for install.

In this embodiment, as shown in fig. 6, the branched outlet pipe 22 includes a flexible outlet pipe 221, a second connector 222 and a second water valve 223, wherein the flexible outlet pipe 221 is connected to the stainless steel outlet pipe 212 through the second water valve 223, and the flexible outlet pipe 221 is connected to the flexible outlet pipe 23 through the second connector 222. By arranging the second water valve 223, when the battery cluster corresponding to the output branch pipe 22 does not need to be filled with the cooling liquid, the second water valve 223 can be closed, so that the cooling liquid flowing back in the output stainless steel pipe 212 is prevented from flowing back to the corresponding circulation channel through the second water valve 223. In addition, through set up output corrugated hose 221 on output lateral pipe 22, can play the cushioning effect in the transportation vibration process, avoid leading to taking place to connect because of rigid connection and reveal, can also be in the installation tolerance of absorption, be convenient for install. In particular, the output bellows 221 may be a corrugated nylon tube, which has the advantages of wear resistance, easy stretching, flexibility, and ease of installation.

In this embodiment, the second connector 222 is a three-way connector, and the connectors at the upper and lower ends of the second connector 222 are connected to the two corresponding sections of output corrugated hoses 221 through a cold pressing process, so that the stability and reliability of the connection between the second connector 222 and the two sections of output corrugated hoses 221 can be ensured. In addition, the joint at the middle end of the second connector 222 is connected to the water outlet hose 23.

Further, as shown in fig. 7, the water outlet hose 23 includes a water outlet corrugated hose 231 and a water outlet quick plug 232, wherein both ends of the water outlet corrugated hose 231 are provided with the water outlet quick plug 232, one end of the water outlet corrugated hose 231 is connected to the joint at the middle end of the second connector 222 through the water outlet quick plug 232, and the other end of the water outlet corrugated hose 231 is connected to the outlet of the flow channel through the water outlet quick plug 232. The two ends of the water outlet corrugated hose 231 are provided with the water outlet quick plugs 232, so that the connection efficiency of the water outlet hose 23, the second connector 222 and the circulation channel is improved. In addition, through setting up out water corrugated hose 231, can play the cushioning effect in the transportation vibration process, avoid leading to taking place to connect because of rigid connection and reveal, can also be convenient for install at installation process absorbed tolerance. Specifically, the water discharging corrugated hose 231 may be a corrugated nylon tube having advantages of abrasion resistance, easy stretching, flexibility, and easy installation.

This liquid cooling energy storage system who implements and provide, through using above-mentioned battery package liquid cooling device to every battery package cooling, the operating personnel of not only being convenient for observes the injection condition and the bubble condition of coolant liquid in the pipeline, guarantees the reliability of annotating the liquid, can also effectively get rid of the bubble in the pipeline, guarantees accurate injection cooling liquid.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (13)

1. A battery package liquid cooling device, characterized by, includes:

the battery pack circulation system comprises an input pipeline (1) and an output pipeline (2), wherein the highest end of the input pipeline (1) is communicated with a visual pipeline (121), the highest end of the visual pipeline (121) is flush with the highest end of the output pipeline (2), an outlet of the input pipeline (1) is communicated with an inlet of a circulation channel on a battery pack, and the output pipeline (2) is communicated with an outlet of the circulation channel on the battery pack; and

and the exhaust valve assembly (3) is arranged at the highest end of the output pipeline (2).

2. The battery pack liquid cooling device according to claim 1, wherein the exhaust valve assembly (3) comprises an automatic exhaust valve (31) and a manual exhaust valve (32) which are arranged at the highest end of the output pipeline (2) at intervals, and the exhaust efficiency of the manual exhaust valve (32) is greater than that of the automatic exhaust valve (31); when the value of the bubbles in the output pipeline (2) reaches a preset value, the manual exhaust valve (32) is opened.

3. The battery pack liquid cooling device according to claim 1, further comprising a liquid cooling unit, wherein the input line (1) comprises:

the input main pipeline (11) is communicated with an outlet of the liquid cooling unit and is arranged at the bottom of a battery cluster formed by vertically arranging a plurality of battery packs;

a plurality of branch input pipes (12), wherein one end of each branch input pipe (12) is communicated with the main input pipeline (11), the branch input pipes (12) extend upwards from the connecting end of the branch input pipes with the main input pipeline (11) to the other end of the branch input pipes, and the highest end of each branch input pipe (12) is communicated with the visual pipeline (121); and

the inlet branch pipes (12) are communicated with the plurality of water inlet hoses (13) at intervals, and the outlet of each water inlet hose (13) on the same inlet branch pipe (12) is communicated with the inlet of the corresponding flow channel on one battery cluster.

4. The battery pack liquid cooling device according to claim 3, wherein the input main pipeline (11) includes an input stainless steel hose (111) and an input stainless steel pipe (112) which are communicated with each other, the input stainless steel hose (111) is communicated with the outlet of the liquid cooling unit, and one end of each of the input branch pipes (12) is communicated with the input stainless steel pipe (112).

5. The battery pack liquid cooling device according to claim 3, wherein the input branch pipe (12) includes an input bellows (124), a first connection head (122), and a first water valve (123), the input bellows (124) communicates with the input main pipe (11) through the first water valve (123), the input bellows (124) communicates with the input water hose (13) through the first connection head (122), and the highest end of the input bellows (124) communicates with the visual pipe (121).

6. The battery pack liquid cooling device according to claim 5, wherein the first connecting joint (122) is a three-way joint, the joints at the upper end and the lower end of the first connecting joint (122) are connected with the two corresponding sections of the input corrugated hoses (124) through a cold pressing process, and the joint at the middle end of the first connecting joint (122) is connected with the water inlet hose (13).

7. The battery pack liquid cooling device according to claim 6, wherein the water inlet flexible pipe (13) comprises a water inlet corrugated flexible pipe (131) and a water inlet quick plug (132), the water inlet quick plug (132) is disposed at each of two ends of the water inlet corrugated flexible pipe (131), one end of the water inlet corrugated flexible pipe (131) is connected with the joint at the middle end of the first connecting head (122) through the water inlet quick plug (132), and the other end of the water inlet corrugated flexible pipe (131) is connected with the inlet of the circulation channel through the water inlet quick plug (132).

8. The battery pack liquid cooling device according to claim 2, wherein the battery pack liquid cooling device further comprises a liquid cooling unit, and the output pipeline (2) comprises:

the output main pipeline (21) is communicated with an inlet of the liquid cooling unit, part of the output main pipeline is arranged at the top of a battery cluster formed by vertically arranging a plurality of battery packs, the highest end of the output main pipeline (21) is flush with the highest end of the visual pipeline (121), the automatic exhaust valve (31) is arranged at one end, close to the liquid cooling unit, of the highest end of the output main pipeline (21), and the manual exhaust valve (32) is arranged at one end, far away from the liquid cooling unit, of the highest end of the output main pipeline (21);

a plurality of output branch pipes (22), one end of each of the output branch pipes (22) communicating with the output main pipe (21), and the output branch pipes (22) extending downward from their connection ends with the output main pipe (21) to their other ends; and

the outlet branch pipes (22) are communicated with the outlet hoses (23) at intervals, and the inlet of each outlet hose (23) on the same outlet branch pipe (22) is communicated with the outlet of the corresponding circulation channel on one battery cluster.

9. The battery pack liquid cooling device according to claim 8, wherein the output header pipe (21) includes:

the output stainless steel hose (211) is communicated with an inlet of the liquid cooling unit; and

the automatic exhaust valve is characterized by comprising an output stainless steel pipe (212) communicated with an output stainless steel hose (211), one end of each output branch pipe (22) is communicated with the output stainless steel pipe (212), the height of the output stainless steel pipe (212) is higher than that of the output stainless steel hose (211), and the automatic exhaust valve (31) and the manual exhaust valve (32) are arranged at the highest end of the output stainless steel pipe (212) at intervals.

10. The battery pack liquid cooling device according to claim 8, wherein the output branch pipe (22) comprises an output corrugated hose (221), a second connector (222) and a second water valve (223), the output corrugated hose (221) is communicated with the output main pipeline (21) through the second water valve (223), and the output corrugated hose (221) is communicated with the water outlet hose (23) through the second connector (222).

11. The battery pack liquid cooling device according to claim 10, wherein the second connector (222) is a three-way connector, the connectors at the upper end and the lower end of the second connector (222) are connected with the two corresponding sections of output corrugated hoses (221) through a cold pressing process, and the connector at the middle end of the second connector (222) is connected with the water outlet hose (23).

12. The battery pack liquid cooling device according to claim 11, wherein the water outlet hose (23) comprises a water outlet corrugated hose (231) and a water outlet quick plug (232), the water outlet quick plug (232) is disposed at each of two ends of the water outlet corrugated hose (231), one end of the water outlet corrugated hose (231) is connected with a joint at the middle end of the second connector (222) through the water outlet quick plug (232), and the other end of the water outlet corrugated hose (231) is connected with an outlet of the flow channel through the water outlet quick plug (232).

13. A liquid-cooled energy storage system comprising a plurality of battery clusters arranged side by side, each of said battery clusters comprising a plurality of battery packs arranged one above the other, characterized in that said liquid-cooled energy storage system further comprises a battery pack liquid-cooling apparatus according to any one of claims 1 to 12, said battery pack liquid-cooling apparatus being configured to cool each of said battery packs.

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