KR102089646B1 - Battery pack and vehicle comprising the battery pack - Google Patents

Abstract

A battery pack according to an embodiment of the present invention includes at least one battery module, at least one battery module including a plurality of battery cells, and a cooling pipe in which a coolant flow path for cooling the plurality of battery cells is formed. It is installed through the pack case and the pack case to accommodate the refrigerant flow from the outside of the pack case to the refrigerant flow path, and discharges refrigerant from the refrigerant flow path to the outside of the pack case. Characterized in that it comprises a connecting pipe of the material.

Description

BATTERY PACK AND VEHICLE COMPRISING THE BATTERY PACK

The present invention relates to a battery pack and an automobile including such a battery pack.

A secondary battery having high applicability according to the product group and having electrical characteristics such as high energy density, etc. is not only portable devices, but also electric vehicles (EV, Electric Vehicle) or hybrid vehicles (HEV) driven by electric driving sources. It is used universally. These secondary batteries are attracting attention as a new energy source for eco-friendliness and energy efficiency enhancement, in that they do not generate any by-products due to the use of energy, as well as a primary advantage that can dramatically reduce the use of fossil fuels.

Currently widely used secondary batteries include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, and nickel zinc batteries. The operating voltage of the unit secondary battery cell, that is, the unit battery cell is about 2.5V to 4.2V. Therefore, when a higher output voltage is required, a battery pack may be configured by connecting a plurality of battery cells in series. In addition, a battery pack may be configured by connecting a plurality of battery cells in parallel according to charge and discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be variously set according to a required output voltage or charge / discharge capacity.

Meanwhile, when a battery pack is configured by connecting a plurality of battery cells in series / parallel, a battery module composed of at least one battery cell is configured first, and other components are added using the at least one battery module to add a battery pack. How to configure it is common.

Conventional battery packs generally include a pack case mounted in a vehicle such as an electric vehicle and at least one battery module provided inside the pack case. Here, the at least one battery module may be provided with a cooling pipe for cooling the battery cells, and the battery pack is provided with a cooling pipe for cooling and supplying and discharging the refrigerant through the cooling pipe, and a refrigerant flow pipe and a refrigerant flow pipe are mounted through the pack case. A connecting pipe connecting the cooling pipe and the cooling pipe may be further provided.

In such a conventional battery pack, the connecting pipe connecting the refrigerant inlet and outlet pipes is provided with a flexible rubber hose such as a nylon tube and mounted in the pack case.

However, in the conventional battery pack, there is a problem in that a large amount of space for mounting a connecting pipe in the pack case is required due to bending of a rubber hose between the refrigerant inlet pipe and the cooling pipe in the pack case, and the volume of the pack case is increased.

In addition, in the conventional battery pack, the connection pipe, which is a rubber hose, may be bent several times within the pack case, and the connection pipe may be blocked due to such bending, such that there is a problem in that the refrigerant inflow efficiency to and from the battery module is reduced.

In addition, in the conventional battery pack, an additional fixing structure for fixing a connection pipe which is bent several times in a pack case or a separate additional fixing structure for connecting both ends of a connection pipe, which is a rubber hose connecting a refrigerant inlet pipe and a cooling pipe. As the back is required, the assembly structure of the connecting pipe is complicated, and there is a problem that the manufacturing cost of the battery pack is increased due to the additional fixing structure.

In addition, in the conventional battery pack, there is a problem that damage to the connection pipe may occur, such as a rubber hose being torn in the bent connection pipe portion during an external impact.

Therefore, it is desired to find a battery pack and a solution to the above-described problems in a vehicle including the battery pack.

Accordingly, an object of the present invention is to increase the efficiency of refrigerant flow into and out of the battery module, improve the assembly of the connecting pipe, and to provide a slimmer battery pack capable of preventing damage to the connecting pipe in the event of an external shock, and such a battery pack. It is to provide an inclusive automobile.

In order to solve the above object, the present invention, as a battery pack, including a plurality of battery cells, at least one battery module having a cooling pipe in which a refrigerant passage for cooling the plurality of battery cells is formed; A pack case accommodating the at least one battery module; A refrigerant flowing in and out of the pack case to supply refrigerant to the refrigerant passage from outside the pack case and discharge the refrigerant from the refrigerant passage to the outside of the pack case; It provides a battery pack characterized in that it comprises; and connecting the refrigerant flow-in and out the cooling pipe, the connecting pipe of the rigid material.

The connecting pipe may be interpolated or extrapolated to the cooling pipe and the refrigerant flow-in pipe, respectively, to have a predetermined gap with the end of the cooling pipe and the end of the refrigerant flow-in pipe.

One end of the connection pipe may be disposed to have a predetermined gap with the end of the cooling pipe in the insertion direction, and the other end of the connection pipe may be disposed to have a predetermined gap with the end of the refrigerant flow-in / out pipe in the insertion direction.

The connecting pipe may be interpolated into the cooling pipe, and may be extrapolated to the refrigerant flow-in pipe.

The connecting pipe includes a cooling pipe mounting part interpolated into the cooling pipe; A refrigerant outlet pipe mounting portion extrapolated to the refrigerant outlet pipe; And a connection portion connecting the cooling pipe mounting portion and the refrigerant flow-in / out pipe mounting portion.

The refrigerant flow-in and out pipe mounting portion and the connection portion may be disposed to have the same inclination angle with respect to the cooling pipe mounting portion.

The cooling pipe, the cooling pipe mounting portion is inserted, the pipe connection portion having an inner diameter greater than the inner diameter of the refrigerant passage; includes, the cooling pipe mounting portion is inserted into the pipe connection portion, the pipe connection portion in the insertion direction An insertion portion disposed to have a predetermined gap with the inner wall; And a protrusion projecting along the circumferential direction of the insertion portion between the insertion portion and the connection portion, and having a predetermined gap with an end portion of the pipe connection portion.

The pack case may be provided with a stopper for preventing the projection from engaging when the cooling pipe mounting portion slides in the opposite direction of the insertion direction so as to prevent the cooling pipe mounting portion from being detached from the pipe connecting portion.

At least one sealing member may be mounted between the pipe connection part and the insertion part.

The refrigerant flow-in and out piping is mounted through the pack case, and is supplied with a refrigerant from a refrigerant device outside the pack case or a piping body for exporting the refrigerant to the refrigerant device; A pipe inserting portion protruding from the pipe body in the pack case and inserted into the refrigerant flow-in pipe mounting portion, and having a predetermined gap with an inner wall of the refrigerant flow-in pipe mounting portion in an insertion direction; And a pipe protrusion that protrudes along the circumferential direction of the pipe insertion portion between the pipe insertion portion and the pipe body, and is disposed to have a predetermined gap with an end portion of the refrigerant inflow pipe mounting portion.

At least one sealing member may be mounted between the refrigerant flow-in and out pipe mounting portion and the pipe insertion portion.

The refrigerant inlet and outlet piping includes: a refrigerant supply piping for supplying refrigerant from outside the pack case to the refrigerant flow path; And a refrigerant discharge pipe for discharging the refrigerant from the refrigerant passage to the outside of the pack case, wherein the connection pipe comprises: a first pipe connecting the refrigerant supply pipe and the cooling pipe; And a second pipe connecting the refrigerant discharge pipe and the cooling pipe.

The connecting pipe may be made of a plastic material.

And, the present invention, as a vehicle, at least one battery pack according to the above-described embodiments; provides a vehicle comprising a.

According to various embodiments as described above, a slimmer battery pack capable of increasing the efficiency of refrigerant flowing into and out of a battery module, improving the assembly of the connecting pipe, and preventing damage to the connecting pipe in the event of an external shock, and An automobile including a battery pack can be provided.

The following drawings attached to this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described below, and thus the present invention is described in such drawings. It is not limited to interpretation.
1 is a view for explaining a battery pack according to an embodiment of the present invention.
FIG. 2 is a perspective view of a battery pack excluding the pack case from the battery pack of FIG. 1.
3 is a rear view of the battery pack of FIG. 2.
4 is a view for explaining a main part of the battery pack of FIG. 1.
5 is a cross-sectional view of part A of FIG. 4.
6 is a cross-sectional view of part B of FIG. 4.

The present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the embodiments described herein are illustratively shown to help understanding of the present invention, and that the present invention can be implemented in various ways differently from the embodiments described herein. In addition, in order to help the understanding of the invention, the accompanying drawings are not drawn to scale, but the dimensions of some components may be exaggerated.

1 is a view for explaining a battery pack according to an embodiment of the present invention, Figure 2 is a perspective view of a battery pack excluding the pack case from the battery pack of Figure 1, Figure 3 is a rear view of the battery pack of Figure 2 4 is a view for explaining a main part of the battery pack of FIG. 1, FIG. 5 is a cross-sectional view of part A of FIG. 4, and FIG. 6 is a cross-sectional view of part B of FIG.

1 to 6, the battery pack 10 may be provided in a vehicle as a fuel source for the vehicle. For example, the battery pack 10 may be provided in a variety of other electric vehicles, hybrid vehicles, plug-in hybrid vehicles and other vehicles that can use the battery pack 10 as a fuel source.

In addition, the battery pack 10 may be provided in other devices, apparatus and equipment, such as an energy storage system using a battery cell as a secondary battery in addition to the vehicle.

The battery pack 10 may include a pack case 100, a battery module 200, a refrigerant inflow / outflow pipe 300 and a connection pipe 500.

The pack case 100 may accommodate a plurality of battery modules 200 to be described later and various electric components or other parts constituting the battery pack 10. The pack case 100 may be mounted on the vehicle, power storage devices, and other devices, devices, and equipment.

The pack case 100 may include a stopper stopper 150.

The departure preventing stopper 150 may be provided on the inner wall of the pack case 100. The escape prevention stopper 150 includes a cooling piping mounting portion 550 to prevent the cooling pipe mounting portion 550 of the connection pipe 500 to be separated from the pipe connection portion 255 of the cooling pipe 250 to be described later. When sliding in the opposite direction of the insertion direction of the projection portion 556 of the cooling pipe mounting portion 550 to be described later may be jammed.

The battery module 200 may be provided in a plurality of at least one or more, it may be packaged in the pack case 100. Hereinafter, in the present embodiment, a description will be given as limiting that a plurality of battery modules 200 are provided.

Each of the plurality of battery modules 200 may include a battery cell assembly 210 and a cooling pipe 250, respectively.

The battery cell assembly 210 is a main component of the battery module 200, and may include a battery cell 212 and a cell cartridge 216.

The battery cells 212 may be provided in a plurality of at least one or more, it may be provided in a pouch-type secondary battery. Hereinafter, in the present exemplary embodiment, a pouch type secondary battery will be described as being limited to a plurality of battery cells 212.

Each of the plurality of battery cells 212 may include an electrode assembly, a battery case accommodating the electrode assembly, and a pair of electrode leads connected to the electrode assembly and projecting out of the battery case.

The cell cartridge 216 is configured to hold at least one battery cell 212 to prevent its flow, and can be stacked with each other to guide the assembly of the plurality of battery cells 212.

The cell cartridge 216 may be provided in plural to guide the assembly of the plurality of battery cells 212, and may be stacked with each other along the front-rear direction (X-axis direction).

The cooling pipe 250 is for cooling the plurality of battery cells 212 of the battery cell assembly 210 and may be mounted at the bottom of the battery cell assembly 210.

A coolant flow path C forming a circulation flow path of the coolant may be formed in the cooling pipe 250 to cool the plurality of battery cells 212. Accordingly, the refrigerant supplied through the refrigerant flow-in pipe 300 described below may be circulated along the refrigerant flow path C to be discharged through the refrigerant flow-in pipe 300.

The cooling pipe 250 may include a pipe connection 255.

The pipe connection portion 255 is provided at an end of the cooling pipe 250 and may be connected to a connection pipe 500 described later. The pipe connection part 255 may have an inner diameter larger than the inner diameter of the refrigerant flow path C, and provided in a pair for circulation of the refrigerant, the first pipe 510 and the second pipe 520 Can be connected to each.

Cooling pipe mounting portions 550 of the connection pipe 500 may be inserted into the pair of pipe connection portions 255, respectively. Here, the inner wall of each pipe connecting portion 255 may be arranged to have a predetermined gap G1 with the cooling pipe mounting portion 550 in the insertion direction of the cooling pipe mounting portion 550.

The refrigerant flow-in / out pipe 300 supplies refrigerant from the refrigerant device outside the pack case 100 to the refrigerant flow path C in the cooling pipe 250, and the refrigerant flow path in the cooling pipe 250 ( For discharging the refrigerant from C) to the refrigerant device or the like outside the pack case 100, it may be mounted through the pack case 100.

The refrigerant flow-in and out pipe 300 may include a refrigerant supply pipe 310 and a refrigerant discharge pipe 320.

The refrigerant supply pipe 310 is for supplying refrigerant from the cooling device outside the pack case 100 to the refrigerant passage C of the cooling pipe 250, and is connected to the refrigerant device and the like, and the pack It may be mounted through the case 100.

The refrigerant discharge pipe 320 is for discharging the refrigerant from the refrigerant passage C of the cooling pipe 250 to a refrigerant device outside the pack case 100, and is connected to the cooling device, etc. It may be mounted through the pack case 100.

The refrigerant discharge pipe 320 and the refrigerant supply pipe 310 may include, as the refrigerant flow-in / out pipe 300, a pipe body 350, a pipe inserting portion 370, and a pipe protrusion 390, respectively. You can.

The piping body 350 is for receiving refrigerant from the refrigerant device outside the pack case 100 or for exporting the refrigerant to the refrigerant device, and may be mounted through the pack case 100.

The pipe inserting portion 370 protrudes from the pipe body 350 in the pack case 100 and may be inserted into the refrigerant inflow pipe mounting portion 570 of the connection pipe 500 to be described later. The pipe insertion portion 370 may be disposed to have a predetermined gap G2 and an inner wall of the refrigerant flow-in / out pipe mounting portion 570, which will be described later in the insertion direction.

The piping protrusion 390 protrudes along the circumferential direction of the piping insertion portion 370 between the piping insertion portion 370 and the piping body 350, and a predetermined end and a predetermined portion of the refrigerant inflow piping mounting portion 570. It can be arranged to have a gap (G2).

The connection pipe 500 may connect the refrigerant flow-in / out pipe 300 and the cooling pipe 250 in the pack case 100. The connection pipe 500 may include a first pipe 510 and a second pipe 520.

The first pipe 510 connects the refrigerant supply pipe 310 and the cooling pipe 250 in the pack case 100, and the second pipe 520 is within the pack case 100. The refrigerant discharge pipe 320 and the cooling pipe 250 may be connected.

Each of the second pipes 520 and the first pipes 510 may be provided as a rigid material as the connecting pipe 500. Specifically, the pair of connection pipes 500 may be provided with a plastic material.

Accordingly, the pair of connecting pipes 500 can secure a predetermined stiffness, such as tearing that occurred when a rubber material is conventionally used when transferring shock to the connecting pipe 500 according to the occurrence of external impact or the like. Damage can be prevented.

In addition, in this embodiment, a problem such as clogging of the connecting pipe due to bending of the connecting pipe, which is a conventional rubber hose, does not occur through the connecting pipe 500 made of the rigid material, thereby preventing the refrigerant from flowing in and out from being deteriorated. can do.

Continuing to look, each connection pipe 500, the end 255 of the cooling pipe 250, specifically, the pipe connection portion 255 of the cooling pipe 250 and the refrigerant flow-in and out pipe 300 End of the 370, specifically, the cooling pipe 250 and the refrigerant flow pipe 300 so as to have a predetermined gap (G1, G2) with the pipe insertion portion 370 of the refrigerant flow pipe 300, respectively It can be interpolated or extrapolated respectively.

Specifically, one end 550 of each of the connecting pipes 500 is a predetermined end and 255 of the cooling pipe 250 in the insertion direction, specifically, the pipe connecting portion 255 of the cooling pipe 250 It is arranged to have a gap (G1), the other end 570 of the connecting pipe 500 may be disposed to have a predetermined gap (G2) and the end 370 of the refrigerant flow-in and out pipe 300 in the insertion direction.

Here, one end 550 of each connection pipe 500 is interpolated to the pipe connection portion 255 of the cooling end 250, and the other end 570 of each connection pipe 500 is the refrigerant flowing in and out. The pipe insertion portion 370 of the pipe 300 may be extrapolated.

As described above, the pair of connection pipes 500 according to the present embodiment is mounted through the cooling pipe 250 and the refrigerant inlet pipe 300 through interpolation or extrapolation, separate from the conventional rubber hose connection structure It may be connected to the cooling pipe 250 and the refrigerant inlet pipe 300 without the additional fixing structure.

Therefore, in this embodiment, the assembly of the pair of connection pipes 500 can be easily performed, thereby improving the assembly of the connection pipes 500 and the battery pack ( 10) can reduce the manufacturing cost.

Looking at the configuration of each connection pipe 500 in more detail, each connection pipe 500 may include a cooling pipe mounting portion 550, a refrigerant flow-in / out pipe mounting portion 570, and a connection portion 590.

The cooling pipe mounting part 550 may be interpolated to the pipe connection part 255 of the cooling pipe 250. Here, the cooling pipe mounting portion 550 may be disposed to have a predetermined gap G1 and an inner wall of the pipe connection portion 255 in the insertion direction.

The cooling pipe mounting part 550 may include an insertion part 552 and a protrusion 556.

The insertion portion 552 is inserted to be interpolated into the pipe connection portion 255, and may be disposed to have a predetermined gap G1 and an inner wall of the pipe connection portion 255 in the insertion direction.

Here, at least one sealing member S may be mounted between the insertion portion 552 and the pipe connection portion 255 to prevent the refrigerant from flowing out. The at least one sealing member (S) may be provided as an O-ring.

The protruding portion 556 protrudes along the circumferential direction of the inserting portion 552 between the inserting portion 552 and the connecting portion 590 to be described later, and an end portion and a predetermined gap G1 of the pipe connecting portion 255 are formed. Can be deployed.

As described above, the protrusion 556 may be caught in the stopper stopper 150 of the pack case 100 so as to prevent departure after insertion of the cooling pipe mounting part 550.

The refrigerant flow-in / out pipe mounting portion 570 is extrapolated to the pipe-input portion 370 of the refrigerant flow-in / out pipe 300, and is disposed to have an end portion and a predetermined gap G2 in the insertion direction in the insertion direction. You can.

Here, at least one sealing member S may be mounted between the refrigerant flow-in and out pipe mounting portion 570 and the pipe insertion portion 370 to prevent the refrigerant from flowing out. The at least one sealing member (S) may be provided as an O-ring.

As described above, in the present embodiment, when the pair of connection pipes 500 are inserted and inserted, each end 255 of the cooling pipe 250 and the end 370 of the refrigerant flow-in / out pipe 300 and a predetermined direction are inserted. Separation intervals forming the gaps G1 and G2 may be formed.

The separation section may buffer an impact transmitted to the connection pipes 500 when the shock is transmitted to the connection pipes 500 due to external impact of the battery pack 10 or the like. Accordingly, in this embodiment, when the external impact, it is possible to minimize the risk, such as damage that may occur at the ends (550, 570) of the connecting pipe 500.

The connecting portion 590 may connect the cooling pipe mounting portion 550 and the refrigerant flow-in / out pipe mounting portion 570. The connection part 590 may be formed to be inclined at a predetermined angle θ with respect to the cooling pipe mounting part 550. In addition, not only the connecting portion 590 but also the refrigerant flow-in / out pipe mounting portion 570 may be formed to be inclined at a predetermined angle θ with respect to the cooling pipe mounting portion 550.

That is, the connecting portion 590 and the refrigerant flow-in / out pipe mounting portion 570 may be disposed to have the same inclination angle θ with respect to the cooling pipe mounting portion 550. Accordingly, the pair of connection pipes 500 according to the present embodiment may be arranged to be bent only once in the pack case 100.

Therefore, in this embodiment, a connection space of a connecting pipe in a considerable space reflecting the bending of the conventional rubber hose or the like can be reduced, and the pack case 100 can be implemented more slim.

Therefore, the battery pack 10 according to the present embodiment can provide a battery pack 10 having a slimmer structure.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is usually in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications can be made by those having knowledge of, and these modifications should not be individually understood from the technical idea or prospect of the present invention.

10: battery pack 100: pack case
150: departure prevention stopper 200: battery module
210: battery cell assembly 212: battery cell
216: cell cartridge 250: cooling piping
255: pipe connection 300: refrigerant inlet and outlet piping
310: refrigerant supply pipe 320: refrigerant discharge pipe
350: piping body 370: piping insert
390: pipe projection 500: connecting pipe
510: first pipe 520: second pipe
550: cooling pipe mounting portion 552: insert
556: protrusion 570: refrigerant inlet pipe mounting
590: connection

Claims (14)

At least one battery module including a plurality of battery cells and having a cooling pipe through which a coolant flow path for cooling the plurality of battery cells is formed;
A pack case accommodating the at least one battery module;
A refrigerant flowing in and out of the pack case to supply refrigerant to the refrigerant passage from outside the pack case and discharge the refrigerant from the refrigerant passage to the outside of the pack case; And
Includes; connecting the refrigerant flow-in and out the cooling pipe, a connecting pipe of a rigid material;
The connecting pipe,
The cooling pipe and the refrigerant flowing in and out are respectively interpolated or extrapolated so as to have a predetermined gap with the end of the cooling pipe and the end of the refrigerant flowing in and out, respectively.
One end of the connecting pipe,
It is arranged to have a predetermined gap with the end of the cooling pipe in the insertion direction,
The other end of the connecting pipe,
It is arranged to have a predetermined gap with the end of the refrigerant flow in and out in the insertion direction,
When the insertion of the connection pipe is inserted, a separation section is formed in the insertion direction with the end of the cooling pipe and the end of the refrigerant flow-in and discharge pipe through the predetermined gap, thereby transferring shock to the connection pipe due to external impact or the like. A battery pack characterized by being fully charged. delete delete According to claim 1,
The connecting pipe,
A battery pack characterized in that it is interpolated into the cooling pipe, and is extrapolated to the refrigerant flowing in and out of the pipe. According to claim 4,
The connecting pipe,
A cooling pipe mounting part interpolated into the cooling pipe;
A refrigerant outlet pipe mounting portion extrapolated to the refrigerant outlet pipe; And
And a connecting portion connecting the cooling pipe mounting portion to the refrigerant inlet pipe mounting portion. The method of claim 5,
The refrigerant outlet pipe mounting portion and the connecting portion,
Battery pack characterized in that it is arranged to have the same inclination angle with respect to the cooling pipe mounting. The method of claim 5,
The cooling pipe,
The cooling pipe mounting portion is inserted, the pipe connection portion having an inner diameter larger than the inner diameter of the refrigerant flow path; includes,
The cooling pipe mounting portion,
An insertion portion inserted into the pipe connection portion and disposed to have a predetermined gap with an inner wall of the pipe connection portion in an insertion direction; And
And a protrusion projecting along the circumferential direction of the insertion portion between the insertion portion and the connection portion, and having a predetermined gap with an end portion of the pipe connection portion. The method of claim 7,
In the pack case,
The battery pack, characterized in that provided with a stopper for preventing the projection from engaging when the sliding portion of the cooling pipe mounting portion in the opposite direction of the insertion direction so as to prevent the cooling pipe mounting portion from being detached from the pipe connection. The method of claim 7,
A battery pack characterized in that at least one sealing member is mounted between the pipe connection part and the insertion part. The method of claim 5,
The refrigerant inlet pipe,
A pipe body mounted through the pack case to receive refrigerant from a refrigerant device outside the pack case or to export the refrigerant to the refrigerant device;
A pipe inserting portion protruding from the pipe body in the pack case and inserted into the refrigerant flow-in pipe mounting portion, and having a predetermined gap with an inner wall of the refrigerant flow-in pipe mounting portion in an insertion direction; And
And a pipe protrusion projecting along the circumferential direction of the pipe insertion portion between the pipe insertion portion and the pipe body, and having a predetermined gap with an end portion of the refrigerant inflow pipe mounting portion. The method of claim 10,
A battery pack, characterized in that at least one sealing member is mounted between the refrigerant outlet pipe mounting portion and the pipe insertion portion. According to claim 1,
The refrigerant inlet pipe,
A refrigerant supply pipe for supplying refrigerant from the pack case to the refrigerant flow path; And
Includes; refrigerant discharge pipe for discharging the refrigerant from the refrigerant flow path to the outside of the pack case,
The connecting pipe,
A first pipe connecting the refrigerant supply pipe and the cooling pipe; And
And a second pipe connecting the refrigerant discharge pipe and the cooling pipe. According to claim 1,
The connecting pipe,
A battery pack made of plastic. A vehicle comprising at least one battery pack according to claim 1.

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