CN219778981U

CN219778981U - Cooling system, battery package and energy storage system of battery

Info

Publication number: CN219778981U
Application number: CN202320254674.9U
Authority: CN
Inventors: 周强; 周杰; 杨友进
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-09-29
Anticipated expiration: 2033-02-09

Abstract

The utility model discloses a battery cooling system, a battery pack and an energy storage system, and belongs to the technical field of battery manufacturing. In the cooling system of the battery, a first cooling structure is used for being attached to a first side of the battery pack and is provided with a first cooling flow passage for circulating a cooling medium; the second cooling structure is arranged at a distance from the first cooling structure and is at least partially suitable for being clamped between the single cells of the battery pack, and the second cooling structure is provided with a second cooling flow passage for circulating cooling medium. Through the arrangement of the first cooling structure and the second cooling structure, the side face of the battery pack and the plurality of single batteries are subjected to omnibearing cooling, so that on one hand, heat conduction between the battery pack and nearby elements after thermal runaway is avoided, and meanwhile, heat accumulation in the battery pack is prevented, and the temperature uniformity of a battery system is improved; on the other hand, the refrigerating capacity requirement of the battery system is reduced, so that the cost control of the temperature control system is realized.

Description

Cooling system, battery package and energy storage system of battery

Technical Field

The utility model belongs to the technical field of battery heat dissipation, and particularly relates to a battery cooling system, a battery pack and an energy storage system.

Background

The cooling system of some batteries adopts the scheme that the battery cells are directly placed on the cold plate, after the cooling scheme is used, the temperature of the bottom of each battery cell is lower, the temperature of the top of each battery cell is higher, the temperature uniformity of each single battery cell is very poor, the refrigerating capacity requirement of the energy storage system is greatly improved, and the cost of the required temperature control system is also greatly increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery cooling system, the battery pack and the energy storage system, which improve the temperature uniformity of the battery system and realize the cost control of the temperature control system.

In a first aspect, the present utility model provides a cooling system for a battery, the cooling system comprising:

a first cooling structure for attaching to a first side of the battery pack and having a first cooling flow passage for circulating a cooling medium;

and a second cooling structure disposed spaced apart from the first cooling structure and adapted to be at least partially clamped between the unit cells of the battery pack, the second cooling structure having a second cooling flow passage for circulating a cooling medium.

According to the cooling system of the battery, through the arrangement of the first cooling structure and the second cooling structure, the side face of the battery pack and the plurality of single batteries are subjected to omnibearing cooling, so that on one hand, heat conduction between the battery pack and nearby elements after thermal runaway is avoided, and meanwhile, heat accumulation in the battery pack is prevented, and therefore the temperature uniformity of the battery system is improved; on the other hand, the refrigerating capacity requirement of the battery system is reduced, so that the cost control of the temperature control system is realized.

According to one embodiment of the utility model, the second cooling structure is adapted to be mounted close to the second side of the battery pack and between the first side of the battery pack and the second side of the battery pack.

According to one embodiment of the utility model, the second cooling structure comprises a frame and a connecting beam, the second cooling flow channel is formed in the frame and the connecting beam, the frame is suitable for being attached to the outer side wall of the battery pack, and the connecting beam is suitable for being clamped between the single batteries.

In accordance with one embodiment of the present utility model,

the frame is rectangular and comprises a first side, a second side, a third side and a fourth side which are sequentially connected in an ending mode, water inlet and outlet ends of the second cooling flow channel are respectively arranged on the first side and the third side, and the connecting beam comprises a plurality of connecting beams parallel to the second side and the fourth side and is connected between the first side and the third side;

or alternatively, the process may be performed,

the frame comprises a first collecting pipe, a second collecting pipe, a first distributing pipe and a second distributing pipe, and the connecting beam comprises a plurality of connecting beams which are arranged in parallel; the connecting beams are connected between the first distributing pipe and the second distributing pipe, the first end of the first distributing pipe is connected with the water outlet end of the first collecting pipe, and the second end of the second distributing pipe is connected with the water inlet end of the second collecting pipe.

According to one embodiment of the utility model, the first cooling flow channel communicates with the second cooling flow channel.

In accordance with one embodiment of the present utility model,

the water inlet and outlet of the cooling system are respectively arranged on the first cooling structure and the second cooling structure.

In accordance with one embodiment of the present utility model,

the water inlet of the cooling system is arranged on the first cooling structure, and the water outlet of the cooling system is arranged on the second cooling structure.

According to one embodiment of the utility model, the cooling system further comprises:

the water inlet and outlet of the cooling system is arranged at the same end of the first cooling structure and the second cooling structure, the connecting pipe is connected to the other ends of the first cooling structure and the second cooling structure, and the first cooling flow channel is communicated with the second cooling flow channel through the connecting pipe.

In a second aspect, the present utility model provides a battery pack comprising: such as any of the above batteries.

According to the battery pack, through the installation of the cooling system of the battery, the highest temperature of the battery core is reduced, the battery pack is ensured to run at a more proper temperature, the safety of the whole battery pack is improved, and the service life of the battery pack is prolonged.

In a third aspect, the present utility model provides an energy storage system comprising: such as the battery pack described above.

According to the energy storage system, through the installation of the battery pack, on one hand, the environment temperature with proper temperature is provided for the whole container energy storage system, and the efficient operation of the energy storage system is ensured; on the other hand, the influence probability of thermal runaway of the battery can be reduced, the omnibearing safety performance of the energy storage system is effectively improved, and safer technical support is provided for the energy storage system.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic diagram of a cooling system for a battery and a single battery according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a cooling system for a battery according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a first cooling flow channel of a cooling system for a battery according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a cooling system and a single battery of a battery according to an embodiment of the utility model;

fig. 5 is a second schematic structural view of a cooling system for a battery according to an embodiment of the present utility model.

Reference numerals:

a cooling system 100;

a first cooling structure 110, a first cooling flow passage 111, a water inlet 112;

the second cooling structure 120, the water outlet 122, the connecting beam 123, the frame 124, the first edge 125, the second edge 126, the third edge 127, the fourth edge 128, the first collecting pipe 129, the second collecting pipe 131, the first distributing pipe 132, and the second distributing pipe 133;

and a connection pipe 140, a unit cell 200.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The utility model discloses a cooling system 100 for a battery.

A cooling system 100 of a battery according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

In some embodiments, as shown in fig. 1-2 and 4-5, the cooling system 100 of the battery includes: a first cooling structure 110 and a second cooling structure 120.

The first cooling structure 110 is for attaching to a first side of the battery pack, and the first cooling structure 110 has a first cooling flow passage 111 for circulating a cooling medium.

The first cooling structure 110 may be used to cool a first side of the battery pack, the first cooling structure 110 may be a hollow plate, and the first cooling flow passage 111 may be formed inside the first cooling structure 110.

The first cooling flow channel 111 may be formed on the first cooling structure 110 in a manner including, but not limited to, a cavity, a press tube, a friction welding type, a vacuum brazing type, etc., for example, in some embodiments, the first cooling flow channel 111 is formed on the first cooling structure 110 in a cavity type.

The material of the first cooling structure 110 may include, but is not limited to, aluminum alloy, stainless steel, or titanium alloy, for example, in some embodiments, the material of the first cooling structure 110 is aluminum alloy.

The routing type of the first cooling flow channel 111 may be linear or curvilinear, for example, in some embodiments, as shown in fig. 2-3 and 5, the first cooling flow channel 111 is a linear flow channel.

The cooling medium may include, but is not limited to, water, glycol, or glycerol, etc., such as, in some embodiments, glycol.

The second cooling structure 120 is disposed spaced apart from the first cooling structure 110, and the second cooling structure 120 is at least partially adapted to be clamped between the unit cells 200 of the battery pack, the second cooling structure 120 having a second cooling flow path for circulating a cooling medium.

The second cooling structure 120 may be used to cool between the unit cells 200 of the battery pack, the second cooling structure 120 may be a hollow frame member, and a second cooling flow path may be formed inside the second cooling structure 120.

The material of the second cooling structure 120 may include, but is not limited to, aluminum alloy, stainless steel, or titanium alloy, for example, in some embodiments, the material of the second cooling structure 120 is aluminum alloy.

The second cooling flow channel may be linear or curvilinear in type of routing, for example, in some embodiments, as shown in fig. 2 and 5, the second cooling flow channel is a linear flow channel.

A plurality of cells 200 may be included in a battery pack, where a plurality represents 2 or more, such as 50 cells 200 in some embodiments.

It will be appreciated that, as shown in fig. 1 and 4, a plurality of unit cells 200 may be stacked in the thickness direction to form a column of cells, and a plurality of columns of cells may be arranged and combined together to form a battery pack.

In practical implementation, the battery pack may be installed in the target device, and when the target device is in an operating state, the battery pack is in a charged state or a discharged state, and at this time, the battery pack is operated to generate a large amount of heat, and the heat may be transferred through the manner that the battery pack is in surface contact with the first cooling structure 110 and the second cooling structure 120, and finally the heat may be taken away by the cooling medium passing through the first cooling flow channel 111 and the second cooling flow channel.

As shown in fig. 1 to 5, when the battery pack is operated to generate a large amount of heat, the temperature of the entire battery pack is increased, the first cooling structure 110 may contact the surface of the first side of the battery pack, and the heat of the first side of the battery pack is removed by heat exchange, thereby greatly reducing the temperature of the peripheral region of the first side of the battery pack; the first cooling structure 110 may contact with the plurality of unit cells 200 in the battery pack, and take away heat between the plurality of unit cells 200 in the battery pack in a heat exchange manner, thereby greatly reducing the temperature between the plurality of unit cells 200 in the battery pack.

In the related art, a battery system is cooled by using a first liquid cooling plate and a second liquid cooling plate, wherein the first liquid cooling plate is arranged on a first surface of a battery pack and is used for cooling the battery pack on the first surface side. The second liquid cooling plate is arranged on the second surface of the battery pack and used for cooling the battery pack at the second surface side.

According to the cooling scheme, only two sides of the battery pack can be cooled, but the inventor researches and discovers that when the battery pack is in a working state, a plurality of single batteries in the battery pack emit a large amount of heat, a plurality of single batteries in the outer ring can radiate heat through the first liquid cooling plate and the second liquid cooling plate, a plurality of single batteries in the inner ring are stacked too densely, the pressure release space is compressed, the plurality of single batteries in the inner ring cannot be sufficiently cooled and cooled, excessive temperature rise is easily caused between the single batteries, and accordingly heat is accumulated in the battery pack continuously.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the arrangement of the first cooling structure 110 and the second cooling structure 120, the side surface of the battery pack and the plurality of single batteries 200 are subjected to omnibearing cooling, so that on one hand, heat conduction between the battery pack and nearby elements after thermal runaway is avoided, and meanwhile, heat accumulation in the battery pack is prevented, so that the temperature uniformity of the battery system is improved; on the other hand, the refrigerating capacity requirement of the battery system is reduced, so that the cost control of the temperature control system is realized.

In some embodiments, as shown in fig. 1 and 4, the second cooling structure 120 may be adapted to be mounted near the second side of the battery pack, and the second cooling structure 120 may be located between the first side of the battery pack and the second side of the battery pack.

In other words, as shown in fig. 1 and 4, the second cooling structure 120 may be disposed at a region between the first side of the battery pack and the second side of the battery pack near the second side.

It can be appreciated that when the second cooling structure 120 is disposed between the first side of the battery pack and the second side of the battery pack near the first side, both the second cooling structure 120 and the first cooling structure 110 cool the peripheral region of the first side of the battery pack; in the case where the second cooling structure 120 is disposed between the first side of the battery pack and the second side of the battery pack near the second side, the first cooling structure 110 may cool the first side peripheral region of the battery pack, and the second cooling structure 120 may cool the second side peripheral region of the battery pack.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the position arrangement of the second cooling structure 120, the first side peripheral area of the battery pack and the second side peripheral area of the battery pack are cooled, so that the temperature difference between two sides of the battery pack is effectively eliminated, and the temperature uniformity of the whole energy storage system is further improved.

In some embodiments, as shown in fig. 2 and 5, the second cooling structure 120 may include a frame 124 and connection beams 123, the second cooling flow path may be formed within the frame 124 and the connection beams 123, the frame 124 may be adapted to fit on an outer sidewall of the battery pack, and the connection beams 123 may be adapted to be clamped between the unit cells 200.

The connection between the frame 124 and the connection beam 123 may include, but is not limited to, integral molding, welding, bolting, etc., such as, in some embodiments, integral molding of the frame 124 and the connection beam 123.

As shown in fig. 2 and 5, the battery pack may have four outer sidewalls, the frame 124 of the second cooling structure 120 may be stopped against the four outer sidewalls of the battery pack, the battery pack may include a plurality of unit cells 200, the frame 124 of the second cooling structure 120 may define an installation area for framing the plurality of unit cells 200, the connection beam 123 of the second cooling structure 120 may be connected with the frame 124 of the second cooling structure 120, and the connection beam 123 of the second cooling structure 120 may divide the installation area defined by the frame 124 of the second cooling structure 120 into a plurality of small installation areas on average, and the plurality of unit cells 200 may be distributed on average in the plurality of small installation areas.

In other words, one side of the frame 124 of the second cooling structure 120 may be attached to the plurality of unit cells 200, and the frame 124 of the second cooling structure 120 may be located outside the plurality of unit cells 200; both side surfaces of the connection beam 123 of the second cooling structure 120 may be attached to the plurality of unit cells 200, and the connection beam 123 of the second cooling structure 120 may penetrate between the plurality of unit cells 200.

It is understood that the second cooling flow channels may be formed in the frame 124 and the connection beam 123, and the cooling medium may flow in the frame 124 and the connection beam 123, so that the cooling medium may flow between the plurality of unit cells 200 while the cooling medium may flow in the four outer side walls of the battery pack.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the arrangement of the frame 124 and the connecting beam 123, the outside and the inside of the battery pack are cooled, so that the redundant heat generated in the working process of the power battery can be timely led out, the occurrence of excessive temperature rise is avoided, and the heat dissipation power of the cooling system 100 is improved.

In some embodiments, as shown in fig. 2 and 5, the rim 124 and the connection beam 123 may include various structures.

The following describes embodiments of the present utility model in detail from two different implementation angles, respectively.

1. The frame 124 is a closed member, and the connection beam 123 points in the direction in which the plurality of cell thicknesses are stacked.

In this embodiment, as shown in fig. 2, the frame 124 may be rectangular, and the frame 124 may include first to fourth sides 125 to 128 connected in series, water inlet and outlet ends of the second cooling flow path may be respectively disposed at the first and third sides 125 and 127, the connection beam 123 may include a plurality of connection beams parallel to the second and fourth sides 126 and 128, and the connection beam 123 may be connected between the first and third sides 125 and 127.

As shown in fig. 2, the frame 124 may have a first side 125, a second side 126, a third side 127 and a fourth side 128, the first side 125 of the frame 124 may be parallel to the third side 127, the second side 126 of the frame 124 may be parallel to the fourth side 128, the water inlet end of the second cooling flow channel may be disposed on the first side 125 of the frame 124, the water outlet end of the second cooling flow channel may be disposed on the third side 127 of the frame 124, one end of the connection beam 123 may be connected to the first side 125 of the frame 124, the other end of the connection beam 123 may be connected to the third side 127 of the frame 124, and the connection beam 123 may be perpendicular to the first side 125 of the frame 124 and the third side 127 of the frame 124.

The connection beams 123 may be provided in a plurality, wherein the plurality represents 2 or more, such as, in some embodiments, 3 connection beams 123 are included within the second cooling structure 120 as shown in fig. 2.

In actual implementation, as shown in fig. 2, the plurality of connection beams 123 may be directed in a direction in which the plurality of cell thicknesses are stacked, the cooling medium may enter the second cooling flow path from the water inlet end located at the first side 125 of the frame 124, the cooling medium may flow through the second side 126 of the frame 124, the fourth side 128 of the frame 124, and the plurality of connection beams 123 after the cooling medium enters the second cooling flow path, then the cooling medium may be merged at the third side 127 of the frame 124, and finally the cooling medium may flow out of the second cooling flow path from the water outlet end located at the third side 127 of the frame 124.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the orientation design of the connecting beam 123, the cooling structure is used for cooling the inside of the battery pack in the stacking direction of the thicknesses of a plurality of battery cells, and under the condition that the energy density of the battery pack is not influenced, the heat accumulation in the battery pack is avoided, so that the temperature difference between the inside and the outside of the battery pack is eliminated, and the good temperature uniformity of the battery pack is ensured.

2. The frame 124 is not closed and the connection beam 123 is directed in the direction in which the plurality of cells are stacked in width.

In this embodiment, as shown in fig. 5, the frame 124 may include a first manifold 129, a second manifold 131, a first distribution pipe 132, and a second distribution pipe 133, and the connection beam 123 may include a plurality of parallel arranged; the plurality of connection beams 123 may be connected between the first distribution pipe 132 and the second distribution pipe 133, a first end of the first distribution pipe 132 may be connected to a water outlet end of the first collecting pipe 129, and a second end of the second distribution pipe 133 may be connected to a water inlet end of the second collecting pipe 131.

The water inlet end of the first collecting pipe 129 may be the water inlet end of the second cooling flow channel, the water outlet end of the second collecting pipe 131 may be the water outlet end of the second cooling flow channel, the second end of the first distributing pipe 132 may be connected to the water inlet end of the last connecting beam 123, and the first end of the second distributing pipe 133 may be connected to the water outlet end of the first connecting beam 123.

As shown in fig. 5, the first collecting pipe 129 of the frame 124 may be parallel to the second collecting pipe 131 of the frame 124, the first distributing pipe 132 of the frame 124 may be parallel to the second distributing pipe 133 of the frame 124, the first collecting pipe 129 and the second collecting pipe 131 may be perpendicular to the first distributing pipe 132 and the second distributing pipe 133, the first end of the first distributing pipe 132 may be connected to the first collecting pipe 129, the second end of the second distributing pipe 133 may be connected to the second collecting pipe 131, one end of the connecting beam 123 may be connected to the first distributing pipe 132, and the other end of the connecting beam 123 may be connected to the second distributing pipe 133.

The connection beams 123 may be provided in a plurality, wherein the plurality represents 2 or more, such as, in some embodiments, 14 connection beams 123 are included within the second cooling structure 120 as shown in fig. 5.

In practical implementation, as shown in fig. 5, the plurality of connection beams 123 may be directed in a direction in which the plurality of cells are stacked in width, the cooling medium may enter the second cooling flow channel from the water inlet end of the second collecting pipe 131, after the cooling medium enters the second cooling flow channel, the cooling medium may flow through the second distributing pipe 133, the plurality of connection beams 123 and the first distributing pipe 132, then the cooling medium may be collected in the first collecting pipe 129, and finally the cooling medium may flow out of the second cooling flow channel from the water outlet end of the first collecting pipe 129.

It should be noted that, when the number of the individual cells is the same, the number of the connection beams 123 to be arranged is large when the connection beams 123 are directed in the stacking direction of the plurality of cell widths, and the total contact area between the connection beams 123 and the plurality of cells is also large.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the orientation design of the connecting beam 123, the cooling structure is used for cooling the interior of the battery pack in the direction of stacking the plurality of battery cells in width, so that the cooling area of the plurality of battery cells is greatly increased, and the cooling efficiency of the whole cooling system 100 is improved.

In some embodiments, as shown in fig. 1-2 and 4-5, the first cooling flow channel 111 may be in communication with the second cooling flow channel.

It is understood that the cooling medium may flow between the first cooling flow channel 111 and the second cooling flow channel, the cooling system 100 may be provided with one water outlet 122 and one water inlet 112, the cooling medium may flow from the first cooling flow channel 111 to the second cooling flow channel, or the cooling medium may flow from the second cooling flow channel to the first cooling flow channel 111, e.g. in some embodiments, the cooling medium may flow from the first cooling flow channel 111 to the second cooling flow channel.

In the related art, a first liquid cooling plate and a second liquid cooling plate are arranged in a cooling system, and the first liquid cooling plate is provided with a first outlet pipe and a first inlet pipe; the second liquid cooling plate is provided with a second outlet pipe and a second inlet pipe.

The proposal needs to arrange double water inlets and double water outlets, but the inventor researches and discovers that on one hand, the structure is complex, and the waterway wiring is more chaotic; on the other hand, the number of related elements is increased, which is disadvantageous in cost control.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the arrangement of the single water inlet 112 and the single water outlet 122, on one hand, the structural layout of the cooling system 100 is simplified, and related operators can operate and install the cooling system conveniently; on the other hand, the required number of related elements is reduced, and the manufacturing cost is further saved.

In some embodiments, as shown in fig. 1-2 and 4-5, water inlet/outlet 122 of cooling system 100 may be disposed in first cooling structure 110 and second cooling structure 120, respectively.

It is understood that the water inlet 112 of the cooling system 100 and the water outlet 122 of the cooling system 100 may be separately disposed, when the water inlet 112 of the cooling system 100 is disposed on the first cooling structure 110, the water outlet 122 of the cooling system 100 may be disposed on the second cooling structure 120, and the flow path of the cooling medium may be the lower inlet and the upper outlet; when the water inlet 112 of the cooling system 100 is disposed on the second cooling structure 120, the water outlet 122 of the cooling system 100 may be disposed on the first cooling structure 110, and the flow path of the cooling medium may be up-in and down-out.

It should be noted that, if the water inlet 112 and the water outlet 122 of the cooling system 100 are both disposed on the first cooling structure 110 or the water inlet 112 and the water outlet 122 of the cooling system 100 are both disposed on the second cooling structure 120, the circulation of the cooling medium between the first cooling flow channel 111 and the second cooling flow channel is not facilitated, and the waste of the cooling medium is also caused.

According to the battery cooling system 100 provided by the embodiment of the utility model, the water inlet 112 and the water outlet 122 are arranged in a split manner through the position design of the water inlet 122, so that the circulation of a cooling medium between the first cooling flow passage 111 and the second cooling flow passage is facilitated, the resource waste of the cooling medium is reduced, the temperature uniformity of a battery pack is improved, and the cooling effect of the cooling system 100 is optimized.

In some embodiments, as shown in fig. 1-2 and 4-5, the water inlet 112 of the cooling system 100 may be disposed at the first cooling structure 110 and the water outlet 122 of the cooling system 100 may be disposed at the second cooling structure 120.

In practical implementation, the cooling medium may enter the first cooling structure 110 from the water inlet 112 of the cooling system 100, and after entering the first cooling structure 110, the cooling medium may start to flow along the first cooling flow channel 111, and in this process, the cooling medium takes away heat of the first side of the battery pack by means of heat exchange, so that the temperature of the peripheral area of the first side of the battery pack is greatly reduced.

The cooling medium flows out of the first cooling structure 110 and then enters the second cooling structure 120, and after entering the second cooling structure 120, the cooling medium can start to flow along the second cooling flow channel, and in the process, the cooling medium takes away heat among the plurality of unit batteries 200 in the battery pack in a heat exchange manner, so that the temperature among the plurality of unit batteries 200 in the battery pack is greatly reduced.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the position design of the water inlet and outlet 122, a cooling medium is in a state of entering from bottom to top, on one hand, the heat exchange time is prolonged, and the resources are fully utilized; on the other hand, the inverted cooling medium is prevented from forming turbulence in the flow channels so as to be detrimental to the efficient heat exchange.

In some embodiments, as shown in fig. 2 and 5, the cooling system 100 of the battery may further include: and a connection pipe 140.

The water inlet 122 of the cooling system 100 may be disposed at the same end of the first cooling structure 110 and the second cooling structure 120, the connection pipe 140 may be connected to the other ends of the first cooling structure 110 and the second cooling structure 120, and the first cooling flow passage 111 and the second cooling flow passage may communicate through the connection pipe 140.

In other words, the water inlet 112 of the cooling system 100 may be disposed at an end of the first cooling structure 110 remote from the connection pipe 140, and the water outlet 122 of the cooling system 100 may be disposed at an end of the second cooling structure 120 remote from the connection pipe 140.

The shape of the connection tube 140 may be linear or curvilinear, for example, in some embodiments, as shown in fig. 2 and 5, the shape of the connection tube 140 is linear.

In actual implementation, the cooling medium may enter the first cooling structure 110 from the water inlet 112 of the cooling system 100, flow through the first cooling flow channel 111, merge into the connection pipe 140, flow through the connection pipe 140, enter the second cooling structure 120, flow through the second cooling flow channel, and flow out of the second cooling structure 120 through the water outlet 122 of the cooling system 100.

According to the battery cooling system 100 provided by the embodiment of the utility model, through the arrangement of the connecting pipe 140, the connection between the first cooling structure 110 and the second cooling structure 120 is realized, on one hand, the structure is light, the installation is convenient, and the reliability of the cooling system 100 is improved; on the other hand, the linear design of the first cooling flow channel 111, the second cooling flow channel and the connecting pipe 140 effectively reduces flow resistance and system pressure drop of the flow channel, improves convenience of flow channel processing, and enhances pressure bearing capacity inside the flow channel.

The utility model also discloses a battery pack, which comprises: such as any of the battery cooling systems 100 described above.

According to the battery pack provided by the embodiment of the utility model, through the installation of the cooling system 100 of the battery, the highest temperature of the battery core is reduced, the battery pack is ensured to run at a more proper temperature, the safety of the whole battery pack is improved, and the service life of the battery pack is prolonged.

The utility model also discloses an energy storage system, which comprises: such as the battery pack described above.

In some embodiments, the energy storage system further comprises: and (3) a container.

The container may be provided with a mounting frame, and the battery pack may be disposed in the mounting frame, and meanwhile, the container may be further provided with an air conditioner and an air duct, and the cooling system 100 of the battery may cooperate with the air conditioner and the air duct to cool the whole energy storage system.

According to the energy storage system provided by the embodiment of the utility model, through the installation of the battery pack, on one hand, the environment temperature with proper temperature is provided for the whole container energy storage system, so that the efficient operation of the energy storage system is ensured; on the other hand, the influence probability of thermal runaway of the battery can be reduced, the omnibearing safety performance of the energy storage system is effectively improved, and safer technical support is provided for the energy storage system.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A cooling system for a battery, comprising:

2. The battery cooling system of claim 1, wherein the second cooling structure is adapted to be mounted adjacent to and between the first side of the battery pack and the second side of the battery pack.

3. The battery cooling system of claim 1, wherein the second cooling structure comprises a frame and a connecting beam, the second cooling flow channel is formed in the frame and the connecting beam, the frame is adapted to fit on an outer sidewall of the battery pack, and the connecting beam is adapted to be clamped between the unit cells.

4. The cooling system of the battery according to claim 3, wherein,

or alternatively, the process may be performed,

5. The cooling system of a battery of any one of claims 1-4, wherein the first cooling flow channel communicates with the second cooling flow channel.

6. The cooling system of the battery according to claim 5, wherein,

7. The cooling system of the battery according to claim 6, wherein,

8. The cooling system of the battery according to claim 6, further comprising:

9. A battery pack, comprising: a cooling system for a battery according to any one of claims 1-8.

10. An energy storage system, comprising: the battery pack as set forth in claim 9.