CN211605349U

CN211605349U - Device for cooling lithium battery pack on ship and ship

Info

Publication number: CN211605349U
Application number: CN201921782708.1U
Authority: CN
Inventors: 韩欣怡; 李信宝
Original assignee: Ningbo University
Current assignee: Ningbo University
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-09-29
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a carry out refrigerated device and boats and ships to lithium cell group on boats and ships, including the flow partition board, sea water cold jacket, sea water inlet pipe and sea water outlet pipe, seted up a plurality of cooling holes on the sea water cold jacket, the lateral wall of cooling hole and the upper and lower bottom surface joint of sea water cold jacket are sealed, and lithium cell group sets up in the cooling hole, is provided with water inlet and delivery port on the lateral wall of sea water cold jacket, and the sea water inlet pipe sets up in water inlet department, and the sea water outlet pipe sets up in delivery port department, and the flow partition board sets up in the sea water cold jacket, and the flow partition board is with the sea water by water inlet.

Description

Device for cooling lithium battery pack on ship and ship

[ technical field ] A method for producing a semiconductor device

The utility model relates to a carry out refrigerated device and boats and ships to lithium cell group on boats and ships belongs to boats and ships cooling field.

[ background of the invention ]

The cooling of the ship lithium battery pack has important significance for realizing high-efficiency electric propulsion of the ship. The key for guaranteeing the high-efficiency and safe operation of the lithium ion battery pack is a battery pack thermal management system, however, when the lithium batteries are used in groups on a large scale by ships, the heat dissipation problem is gradually highlighted.

Traditional lithium ion battery water-cooling system puts forward higher requirement to lithium cell group thermal management system for the safety of assurance system, and in order to be able control system in the optimum temperature range during high efficiency application, need higher convection heat transfer performance to and sufficient fresh water resource, however the fresh water resource is nervous when boats and ships long voyage, and the cost is higher, very big restriction the use of lithium cell group.

Therefore, in order to solve the cooling problem of large-scale grouped use of the ship lithium battery pack and facilitate subsequent use and operation, a cooling medium is urgently needed to replace fresh water to serve as a water cooling system of the ship lithium battery pack to make up for the defects. The seawater is the most abundant water resource when the ship sails on the sea, has a higher heat exchange coefficient than fresh water, and can effectively reduce the cooling cost of the ship lithium battery pack by directly adopting the seawater for cooling.

[ Utility model ] content

The utility model aims to solve the technical problem that overcome prior art not enough and provide a service efficiency height, cooling effect good, the convection heat transfer coefficient is high carries out refrigerated device and boats and ships to lithium cell group on boats and ships.

Solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a device that cools off carries out lithium cell group on boats and ships, including the flow partition board, the sea water cooling jacket, sea water inlet pipe and sea water outlet pipe, a plurality of cooling holes have been seted up on the sea water cooling jacket, the lateral wall of cooling hole and the upper and lower bottom surface joint of sea water cooling jacket are sealed, lithium cell group sets up in the cooling hole, be provided with water inlet and delivery port on the lateral wall of sea water cooling jacket, the sea water inlet pipe sets up in water inlet department, the sea water outlet pipe sets up in delivery port department, the flow partition board sets up in the sea water cooling jacket, the flow partition board is with the sea water by.

The end part of the flow isolating plate is arranged on the side wall of the cooling hole.

Cooling hole quantity has a plurality ofly, in the sea water flow direction, interval crescent between the adjacent cooling hole.

Carry out refrigerated device to lithium cell group on boats and ships still includes the heat-transfer pipe, and the heat-transfer pipe is pegged graft in cooling hole department, the outer wall of heat-transfer pipe and the inner wall laminating of cooling hole, and lithium cell group location is in the heat-transfer pipe.

The heat transfer pipe of the utility model is made of aluminum.

Carry out refrigerated device to lithium cell group on boats and ships still including walking the line box, outside the both ends of heat-transfer pipe were located the cooling hole, walk the tip intercommunication of line box diapire and all heat-transfer pipes.

Walk line box quantity and have two, two walk the line box and communicate in the both ends of heat-transfer pipe respectively, two walk the line box and all fix on the hull.

The inner wall and the outer wall of the heat transfer pipe are coated with an anticorrosive coating.

The flow isolating plate divides the space in the seawater cold jacket into one-way flow channels, the quantity of the water inlet and the water outlet is one, the water inlet is the inlet of the one-way flow channel, and the water outlet is the outlet of the one-way flow channel.

A ship comprises a ship body and a device for cooling a lithium battery pack on the ship.

Compared with the prior art, the utility model, have following advantage:

1. the seawater inlet pipe and the seawater outlet pipe respectively discharge seawater into and discharge seawater from the seawater cold jacket, so that the flow direction of the seawater in the seawater cold jacket is ensured, and the cooling effect of the seawater on the lithium battery pack is ensured;

2. the side walls of the cooling holes are connected and sealed with the upper bottom surface and the lower bottom surface of the seawater cooling jacket, so that the seawater inlet and outlet in the seawater cooling jacket are ensured, and the seawater is prevented from leaking into the ship body;

3. the flow isolating plate guides the seawater in the seawater cold jacket, so that the seawater accurately flows from the water inlet to the water outlet, the flowing length of the seawater is prolonged, the heat exchange times between the seawater and the lithium battery pack are increased, and the heat exchange time is prolonged;

4. the shape of the cooling hole can be set to be cylindrical, so that the heat concentration degree of the part of the side wall of the cooling hole is avoided, and the heat dissipation is facilitated;

5. the seawater is adopted for heat exchange, so that the fresh water resource is effectively saved, the required reserve of fresh water is reduced, and the load of a ship body is lightened;

6. the refrigeration problem and the seawater corrosion problem of large-scale group use of the ship lithium ion battery pack are solved, the valuable fresh water resource of the sailing ship is saved, and the efficient and safe operation of the ship lithium ion battery pack is guaranteed.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a schematic perspective view of a device for cooling a lithium battery pack on a ship according to embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of a device for cooling a lithium battery pack on a ship according to embodiment 2 of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the following description, the appearances of the indicating orientation or positional relationship, such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are only for convenience in describing the embodiments and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Example 1:

referring to fig. 1, the present embodiment provides an apparatus for cooling a lithium battery pack on a ship, including a flow partition plate 8, a seawater cooling jacket 4, a seawater inlet pipe 1, and a seawater outlet pipe 2.

The seawater cooling jacket 4 is approximately a cuboid, and a water inlet and a water outlet are arranged on the side wall of the seawater cooling jacket 4 and are positioned on the same side wall of the seawater cooling jacket 4. The seawater inlet pipe 1 is arranged at the water inlet, the seawater outlet pipe 2 is arranged at the water outlet, and the seawater can enter the seawater cooling jacket 4 from the water inlet by controlling the water pressure, and the seawater in the seawater cooling jacket 4 can be discharged from the water outlet. The number of the water inlets and the water outlets is one, so that the seawater in the seawater cooling jacket 4 is ensured to be in single inlet and out single outlet.

A plurality of cooling holes 5 are formed in the seawater cooling jacket 4, the cooling holes 5 are cylindrical holes, the axial direction of each cooling hole 5 is perpendicular to the bottom wall of the seawater cooling jacket 4, and two ends of each cooling hole 5 are communicated to the top wall and the bottom wall of the seawater cooling jacket 4 respectively. The side surface of the cooling hole 5 is not communicated with the inside of the seawater cooling jacket 4, but has a side wall, and two ends of the side wall of the cooling hole 5 are respectively jointed and sealed with the upper bottom surface and the lower bottom surface of the seawater cooling jacket 4, so as to ensure that the inlet and the outlet of seawater on the seawater cooling jacket 4 are only a water inlet and a water outlet, and avoid seawater leakage.

The lithium battery pack is arranged in the cooling holes 5, transfers heat to the side wall of the cooling holes 5 and then transfers the heat to seawater in the seawater cooling jacket 4, seawater is continuously discharged from the water outlet and continuously poured into the seawater from the water inlet, so that the seawater in the seawater cooling jacket 4 is continuously replaced, and the seawater is discharged into the sea again through the seawater outlet pipe 2 after the heat is taken away from the side wall of the cooling holes 5.

The cylindrical cooling holes 5 increase the heat dissipation area, reduce the excessive concentration of heat at a certain point on the side wall of the cooling holes 5 as much as possible, and enhance the uniformity of heat dissipation.

The flow partition plate 8 is arranged in the seawater cooling jacket 4, and seawater needs to be avoided when flowing through the flow partition plate 8, so that the flow partition plate 8 can increase the flowing length of the seawater in the seawater cooling jacket 4, and further increase the heat taken away by the seawater from the side wall of the cooling hole 5, thereby improving the utilization rate of the seawater.

In summary, the flow direction of the seawater in the seawater cooling jacket 4 is controlled by the flow isolating plate 8, and the flow isolating plate 8 can guide the seawater from the water inlet to the water outlet.

In the present embodiment, all the cooling holes 5 are arranged in a rectangular array, and the number of the flow partitioning plates 8 is plural. A flow partition plate 8 is arranged between adjacent cooling holes 5 at one row of cooling holes 5, the flow partition plate 8 is also arranged between the cooling hole 5 at one end of the row of cooling holes 5 and the inner wall of the seawater cooling jacket 4, the flow partition plate 8 is not arranged between the cooling hole 5 at the other end of the row of cooling holes 5 and the inner wall of the seawater cooling jacket 4, so that a U-shaped flow channel is formed, and seawater flows in the seawater cooling jacket 4 in a U-shaped track.

The U-shaped flow channel is a one-way flow channel, the water inlet is the inlet of the U-shaped flow channel, and the water outlet is the outlet of the U-shaped flow channel. The seawater can effectively and fully flow in the seawater cooling jacket 4, and the stay of the seawater with higher salinity in the part of the seawater cooling jacket 4 is reduced.

The end parts of the flow partition plates 8 between the adjacent cooling holes 5 are arranged on the side walls of the cooling holes 5, so that the seawater can only flow along the U-shaped track, and the side walls of the row of cooling holes 5 where the corresponding flow partition plates 8 are located carry out secondary heat exchange with the seawater, thereby increasing the heat exchange time.

In this embodiment, the flow partition plate 8 is located in the middle of the seawater cooling jacket 4, and the left half part and the right half part of the U-shaped flow channel have the same structure, so that the flow area of the U-shaped flow channel is approximately kept constant, the seawater can be as uniform as possible in the U-shaped flow channel, and the flow rate is kept constant.

Example 2:

referring to fig. 2, the present embodiment is different from embodiment 1 in that the distance between adjacent cooling holes is gradually increased in the flow direction of seawater, so that the cooling holes are not arranged in a rectangular array. That is, the number of cooling holes of the U-shaped flow passage on the side of the seawater inlet pipe 1 is large, and the number of cooling holes of the U-shaped flow passage on the side of the seawater outlet pipe 2 is small. Because the temperature of the seawater gradually rises in the flowing process along the U-shaped flow passage, the design can gradually reduce the heat exchange burden of the seawater.

The device for cooling the lithium battery pack on the ship in the embodiment further comprises a heat transfer pipe 3 and a wiring box.

The heat transfer pipe 3 is a circular pipe having a shape matching the shape of the cooling hole. The heat transfer pipe 3 is inserted at the cooling hole to ensure that the outer wall of the heat transfer pipe 3 is attached and fixed with the inner wall of the cooling hole, thereby leading the heat of the inner wall of the cooling hole to be smoothly transferred to the heat transfer pipe 3 as much as possible. Lithium cell group location is in heat-transfer pipe 3, and heat-transfer pipe 3 is fixed the position of lithium cell group on sea water cold jacket 4, and lithium cell group carries out the heat transfer through heat-transfer pipe 3. The heat transfer pipe 3 protects the lithium battery pack, and protects the lithium battery pack under the condition that the side wall of the cooling hole is damaged.

Preferably, the heat transfer pipe 3 is made of aluminum having a high thermal conductivity.

More preferably, the heat transfer pipe 3 is coated with an anticorrosive layer on the inner and outer walls thereof, thereby reducing the loss of the heat transfer pipe 3 and reducing the cost.

Both ends of the heat transfer pipe 3 are located outside the cooling holes. The number of the wiring boxes is two, namely an upper wiring box 6 and a lower wiring box 7. The bottom wall of the upper wire casing 6 communicates with the upper ends of all the heat transfer tubes 3, and the top wall of the lower wire casing 7 communicates with the lower ends of all the heat transfer tubes 3. The upper wiring box 6 and the lower wiring box 7 provide wiring space required for the lithium battery pack to be electrically connected with the outside and gather the lines.

The top wall of the upper wire box 6 is an upper cover, the bottom wall of the lower wire box 7 is a lower cover, and the upper cover and the lower cover are respectively provided with a general wire routing port (not shown in the figure).

The upper wiring box 6 and the lower wiring box 7 are fixed on the ship body, so that the position of the seawater cooling jacket 4 in the ship body is fixed on two sides.

Example 3:

the embodiment provides a ship, which comprises the device for cooling the lithium battery pack on the ship and a ship body in the

embodiment

1 or 2.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides a device that cools off lithium cell group on boats and ships which characterized in that: the seawater cooling jacket is provided with a plurality of cooling holes, the side walls of the cooling holes are jointed and sealed with the upper bottom surface and the lower bottom surface of the seawater cooling jacket, the lithium battery pack is arranged in the cooling holes, the side walls of the seawater cooling jacket are provided with a water inlet and a water outlet, the seawater inlet pipe is arranged at the water inlet, the seawater outlet pipe is arranged at the water outlet, the flow partition plate is arranged in the seawater cooling jacket, and the flow partition plate guides seawater from the water inlet to the water outlet.

2. The device for cooling the lithium battery pack on the ship according to claim 1, wherein: the end part of the flow partition plate is arranged on the side wall of the cooling hole.

3. The device for cooling the lithium battery pack on the ship according to claim 1, wherein: the number of the cooling holes is multiple, and in the seawater flow direction, the distance between the adjacent cooling holes is gradually increased.

4. The device for cooling the lithium battery pack on the ship according to claim 1, wherein: the device for cooling the lithium battery pack on the ship further comprises a heat transfer pipe, the heat transfer pipe is inserted in the cooling hole, the outer wall of the heat transfer pipe is attached to the inner wall of the cooling hole, and the lithium battery pack is positioned in the heat transfer pipe.

5. The device for cooling the lithium battery pack on the ship according to claim 4, wherein: the heat transfer pipe is made of aluminum.

6. The device for cooling the lithium battery pack on the ship according to claim 4, wherein: the device for cooling the lithium battery pack on the ship further comprises a wiring box, wherein two ends of the heat transfer pipe are located outside the cooling hole, and the bottom wall of the wiring box is communicated with the end parts of all the heat transfer pipes.

7. The device for cooling the lithium battery pack on the ship according to claim 6, wherein: walk line box quantity to have two, two walk line box respectively in the both ends intercommunication of heat-transfer pipe, two walk line box and all fix on the hull.

8. The device for cooling the lithium battery pack on the ship according to claim 4, wherein: the inner wall and the outer wall of the heat transfer pipe are coated with anticorrosive coatings.

9. The device for cooling the lithium battery pack on the ship according to claim 1, wherein: the flow isolating plate divides the space in the seawater cold jacket into one-way flow channels, the number of the water inlets and the number of the water outlets are one, the water inlets are inlets of the one-way flow channels, and the water outlets are outlets of the one-way flow channels.

10. A marine vessel, characterized by: comprising a ship hull and an arrangement for cooling a lithium battery pack on board a ship according to any of claims 1-9.