Air-cooled battery pack of lithium ion battery

Abstract

The invention relates to the technical field of lithium ion batteries, and discloses a lithium ion battery air-cooled battery pack which comprises a lithium ion battery pack, a shell is arranged outside the lithium ion battery pack, a heat insulation plate is arranged on the inner wall of the lithium ion battery pack, and a cooling mechanism is arranged below the lithium ion battery pack. A heat dissipation mechanism is arranged above the lithium ion battery pack and comprises a condensation pipe. According to the air-cooled battery pack for the lithium ion battery, the condenser pipe is arranged below the lithium ion battery pack, the plurality of connecting pipes are uniformly and vertically connected between the left side and the right side of the inner wall of the condenser pipe, a direct-current type connection mode is adopted, heat can be taken away more quickly, and a cooling medium enters the condenser pipe and the connecting pipes through the liquid inlet pipe; the first heat conduction pipe and the second heat conduction pipe improve the heat conduction efficiency, heat of the lithium ion battery pack can be taken away more conveniently, and therefore the effect of improving the heat dissipation efficiency of the lithium ion battery pack can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion batteries, in particular to an air-cooled lithium ion battery pack. Background Art

[0002] Lithium-ion battery is a common secondary battery (rechargeable battery) that completes the charging and discharging process through the movement of lithium ions between the positive and negative electrodes. Due to its high energy density, long life, no memory effect and relatively low self-discharge rate, lithium-ion battery is widely used in portable electronic devices (such as mobile phones, laptops), electric vehicles (EVs), energy storage systems and other fields.

[0003] With the rapid development of electric vehicles (EVs) and energy storage systems, lithium-ion batteries have become the mainstream choice due to their high energy density and long cycle life. However, batteries generate heat during the charging and discharging process. If the heat cannot be effectively dissipated, the battery temperature will rise, affecting the battery's performance and safety. Currently, lithium-ion batteries have poor heat dissipation effects and are easily damaged due to excessive temperature, affecting their use. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a lithium-ion battery air-cooled battery pack, which has the advantages of improving the heat dissipation efficiency of the lithium-ion battery pack and solving the problems mentioned in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium-ion battery air-cooled battery pack, comprising a lithium-ion battery pack, a shell is arranged on the outside of the lithium-ion battery pack, a heat insulation plate is arranged on the inner wall of the lithium-ion battery pack, a cooling mechanism is arranged below the lithium-ion battery pack, and a heat dissipation mechanism is arranged above the lithium-ion battery pack, the cooling mechanism comprises a condenser, the condenser is arranged directly below the lithium-ion battery pack, a number of connecting pipes are fixedly connected to the left side of the inner wall of the condenser, a liquid inlet pipe is fixedly connected to the middle of the left side of the condenser, and a liquid outlet pipe is fixedly connected to the middle of the right side of the condenser, a first heat conduction plate is fixedly connected to the lower surface of the shell, a second heat conduction plate is fixedly connected to the lower surface of the condenser, a bottom plate is fixedly connected to the lower surface of the second heat conduction plate, a first plug is fixedly connected to the four corners of the upper surface of the bottom plate, and sleeves are fixedly connected to the four corners of the lower surface of the shell.

[0008] Preferably, the heat dissipation mechanism comprises four jacks, the four jacks are respectively opened at four corners of the upper surface of the shell, and a fixed shell is arranged above the jacks.

[0009] Preferably, second plug blocks are fixedly connected to the four corners of the lower surface of the fixed shell, and air ducts are fixedly connected to the left and right sides of the inner wall of the fixed shell.

[0010] The four sockets are respectively embedded in the four corners of the upper surface of the shell, the fixed shell is parallel to the top of the shell, the tops of the four second plug-ins are respectively vertically connected to the four corners of the lower surface of the fixed shell, the second plug-ins can be inserted into the inside of the sockets to connect the fixed shell and the shell together, and the two air ducts are symmetrically distributed on the left and right sides of the inner wall of the fixed shell.

[0011] Preferably, a number of flow pipes are fixedly connected to one side of the air duct, and a number of air outlet holes are opened on the lower surface of the flow pipes.

[0012] A number of flow pipes are evenly and vertically connected between the two air ducts, and the two ducts are mutually circulated, and the air outlet holes are embedded in the lower surfaces of the flow pipes.

[0013] Preferably, a placement plate is fixedly connected to the upper surface of the fixed shell, a fixing cylinder is fixedly connected to the middle of the upper surface of the placement plate, and a heat dissipation fan is provided in the middle of the interior of the fixing cylinder.

[0014] Preferably, air pipes are fixedly connected to the middle parts of the left and right sides of the upper surface of the fixed cylinder, and a number of air inlet holes are opened below the outer surface of the fixed cylinder.

[0015] The placement plate is used to install the fixed cylinder. The airflow generated by the cooling fan is blown to the inside of the wind duct and the circulation pipe through the air pipe, and blown to the lithium-ion battery pack below through the air outlet. A number of air inlet holes are all through the lower outer surface of the fixed cylinder for air circulation inside the fixed cylinder.

[0016] Compared with the prior art, the present invention provides a lithium-ion battery air-cooled battery pack having the following

[0017] Beneficial effects:

[0018] 1. The air-cooled lithium-ion battery pack has a condenser disposed below the lithium-ion battery pack, and a number of connecting tubes are evenly and vertically connected between the left and right sides of the inner wall of the condenser tube. A direct current connection is adopted to take away the heat more quickly. The cooling medium enters the condenser tube and the connecting tube through the liquid inlet pipe. The first heat conducting tube and the second heat conducting tube improve the heat conduction efficiency, making it more convenient to take away the heat of the lithium-ion battery pack, thereby achieving the effect of improving the heat dissipation efficiency of the lithium-ion battery pack.

[0019] 2. The air-cooled lithium-ion battery pack is fixed with air ducts connected on both sides of the shell, and a number of flow pipes are vertically connected between the two air ducts, which are interconnected, and air outlets are embedded in the surfaces of the flow pipes. The cooling fan blows the airflow into the air duct through the air pipe, and then blows the airflow to the lithium-ion battery pack below through the flow pipe, thereby increasing the heat dissipation effect of the lithium-ion battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a top view of a lithium-ion battery pack of the present invention;

[0022] Figure 3 This is a schematic diagram of the top view structure of the condenser tube of the present invention;

[0023] Figure 4 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the flow pipe structure of the present invention.

[0025] Wherein: 1. lithium-ion battery pack; 101. shell; 102. heat insulation board; 2. cooling mechanism; 201. condenser; 202. connecting pipe; 203. liquid inlet pipe; 204. liquid outlet pipe; 205. first heat conducting plate; 206. second heat conducting plate; 207. bottom plate; 208. first plug-in block; 209. sleeve; 3. heat dissipation mechanism; 301. plug-in hole; 302. fixed shell; 303. second plug-in block; 304. air duct; 305. circulation pipe; 306. air outlet; 307. placement plate; 308. fixing tube; 309. cooling fan; 310. air duct; 311. air inlet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5A lithium-ion battery air-cooled battery pack comprises a lithium-ion battery pack 1, a shell 101 is arranged on the outside of the lithium-ion battery pack 1, a heat insulation board 102 is arranged on the inner wall of the lithium-ion battery pack 1, a cooling mechanism 2 is arranged below the lithium-ion battery pack 1, and a heat dissipation mechanism 3 is arranged above the lithium-ion battery pack 1, the cooling mechanism 2 comprises a condenser 201, the condenser 201 is arranged directly below the lithium-ion battery pack 1, a plurality of connecting pipes 202 are fixedly connected to the left side of the inner wall of the condenser 201, a liquid inlet pipe 203 is fixedly connected to the middle of the left side of the condenser 201, and a liquid outlet pipe 204 is fixedly connected to the middle of the right side of the condenser 201, a first heat conducting plate 205 is fixedly connected to the lower surface of the shell 101, a second heat conducting plate 206 is fixedly connected to the lower surface of the condenser 201, a bottom plate 207 is fixedly connected to the lower surface of the second heat conducting plate 206, and a first plug 208 is fixedly connected to the four corners of the upper surface of the bottom plate 207, and the shell 101 is fixedly connected to the bottom plate 207. The four corners of the lower surface are fixed with connecting sleeves 209, the lithium-ion battery pack 1 is placed inside the outer shell 101, and the heat insulation plate 102 separates the lithium-ion battery packs 1 composed of several lithium ions, so that the heat dissipation between the lithium-ion battery packs 1 is convenient, the condenser 201 is parallel to the bottom of the lithium-ion battery pack 1, and a number of connecting pipes 202 are evenly and vertically connected between the left and right sides of the inner wall of the condenser 201, and the cooling medium enters the condenser 201 and the connecting pipe 202 through the liquid inlet pipe 203. The first heat conducting plate 205 and the second heat conducting plate 206 can respectively improve the thermal conductivity of the outer shell 101 and the condenser 201 and enhance the heat conduction effect. The bottoms of the four first plug blocks 208 are respectively vertically connected to the four corners of the upper surface of the bottom plate 207, and the tops of the four sleeves 209 are respectively vertically connected to the four corners of the lower surface of the outer shell 101. The first plug block 208 can be inserted into the sleeve 209 to connect the condenser 201 with the outer shell 101.

[0028] Specifically, Figure 2 and Figure 4 As shown, the heat dissipation mechanism 3 includes a socket 301, and the number of the sockets 301 is four. The four sockets 301 are respectively opened at the four corners of the upper surface of the shell 101. A fixed shell 302 is arranged above the socket 301. The four corners of the lower surface of the fixed shell 302 are fixedly connected with a second plug block 303, and the left and right sides of the inner wall of the fixed shell 302 are fixedly connected with an air duct 304.

[0029] Through the above technical solution, the four sockets 301 are respectively embedded in the four corners of the upper surface of the shell 101, the fixed shell 302 is parallel to the top of the shell 101, and the tops of the four second plug blocks 303 are respectively vertically connected to the four corners of the lower surface of the fixed shell 302. The second plug blocks 303 can be inserted into the inside of the sockets 301 to connect the fixed shell 302 and the shell 101 together. The two air ducts 304 are symmetrically distributed on the left and right sides of the inner wall of the fixed shell 302.

[0030] Specifically, Figure 4 and Figure 5 As shown, a number of flow tubes 305 are fixedly connected to one side of the air duct 304 , and a number of air outlet holes 306 are opened on the lower surface of the flow tube 305 .

[0031] Through the above technical solution, a number of circulation tubes 305 are evenly and vertically connected between the two air ducts 304 , and the two ducts 304 circulate with each other, and the air outlet holes 306 are embedded in the lower surface of the circulation tubes 305 .

[0032] Specifically, Figure 1 and Figure 4 As shown, a placement plate 307 is fixedly connected to the upper surface of the fixed shell 302, a fixed cylinder 308 is fixedly connected to the middle of the upper surface of the placement plate 307, a cooling fan 309 is arranged in the middle of the interior of the fixed cylinder 308, air pipes 310 are fixedly connected to the middle of the left and right sides of the upper surface of the fixed cylinder 308, and a number of air inlet holes 311 are opened at the lower part of the outer surface of the fixed cylinder 308.

[0033] Through the above technical solution, the placement plate 307 is used to install the fixed cylinder 308, and the airflow generated by the cooling fan 309 is blown to the inside of the air duct 304 and the circulation tube 305 through the air pipe 310, and blown to the lithium-ion battery pack 1 below through the air outlet 306. A number of air inlet holes 311 are all penetrated below the outer surface of the fixed cylinder 308 for air circulation inside the fixed cylinder 308.

[0034] When in use, the operator puts the lithium-ion battery pack 1 into the shell 101, inserts the heat insulation board 102 into the lithium-ion battery pack 1, inserts the sleeve 209 at the bottom of the shell 101 into the outside of the first plug block 208, connects the shell 101 and the bottom plate 207 together, passes the cooling medium into the condenser 201 and the connecting pipe 202 through the liquid inlet pipe 203, and the condenser 201 and the connecting pipe 202 take away the heat generated by the lithium-ion battery pack 1, then inserts the second plug block 303 at the bottom of the fixed shell 302 into the socket 301 on the upper surface of the shell 101, connects the fixed shell 302 and the shell 101 together, and the heat dissipation fan 309 blows the air flow through the air pipe 310 to the air duct 304 and the circulation pipe 305, and finally blows it to the lithium-ion battery pack 1 through the air outlet 306 to blow away its heat.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery air-cooled battery pack, comprising a lithium-ion battery pack (1), characterized in that: The lithium-ion battery pack (1) is provided with a housing (101) on the outside, a heat insulation board (102) is provided on the inner wall of the lithium-ion battery pack (1), a cooling mechanism (2) is provided below the lithium-ion battery pack (1), and a heat dissipation mechanism (3) is provided above the lithium-ion battery pack (1), the cooling mechanism (2) comprises a condenser (201), the condenser (201) is provided directly below the lithium-ion battery pack (1), a plurality of connecting pipes (202) are fixedly connected to the left side of the inner wall of the condenser (201), and the left side of the condenser (201) is provided with a heat dissipation mechanism (3). A liquid inlet pipe (203) is fixedly connected to the middle part of the side, a liquid outlet pipe (204) is fixedly connected to the middle part of the right side of the condenser (201), a first heat conduction plate (205) is fixedly connected to the lower surface of the shell (101), a second heat conduction plate (206) is fixedly connected to the lower surface of the condenser (201), a bottom plate (207) is fixedly connected to the lower surface of the second heat conduction plate (206), a first plug-in block (208) is fixedly connected to the four corners of the upper surface of the bottom plate (207), and sleeves (209) are fixedly connected to the four corners of the lower surface of the shell (101).

2. The air-cooled lithium-ion battery pack according to claim 1, characterized in that: The heat dissipation mechanism (3) comprises a socket (301), the number of the sockets (301) is four, the four sockets (301) are respectively opened at the four corners of the upper surface of the shell (101), and a fixed shell (302) is arranged above the sockets (301).

3. The air-cooled lithium-ion battery pack according to claim 2, characterized in that: Second plug blocks (303) are fixedly connected at the four corners of the lower surface of the fixed shell (302), and air ducts (304) are fixedly connected to the left and right sides of the inner wall of the fixed shell (302).

4. The air-cooled lithium-ion battery pack according to claim 3, characterized in that: A number of circulation tubes (305) are fixedly connected to one side of the air duct (304), and a number of air outlet holes (306) are opened on the lower surface of the circulation tube (305).

5. The air-cooled lithium-ion battery pack according to claim 2, characterized in that: A placement plate (307) is fixedly connected to the upper surface of the fixed shell (302), a fixed cylinder (308) is fixedly connected to the middle of the upper surface of the placement plate (307), and a heat dissipation fan (309) is arranged in the middle of the interior of the fixed cylinder (308).

6. The air-cooled lithium-ion battery pack according to claim 5, characterized in that: Air pipes (310) are fixedly connected to the middle parts of the left and right sides of the upper surface of the fixed cylinder (308), and a number of air inlet holes (311) are opened below the outer surface of the fixed cylinder (308).

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