Air-cooled lithium battery pack

Abstract

The utility model discloses an air cooling lithium battery pack and belongs to the technical field of air cooling. Comprising a main body and a cooling mechanism, the main body comprises a box body, brushless fans are installed at the two ends of the box body in an embedded mode, the ends, located in the box body, of the brushless fans are sleeved with dustproof nets, the cooling mechanism comprises a pair of installation boxes, and the installation boxes are arranged on the two sides in the box body respectively; first heat-conducting fins are fixedly mounted at the bottom end of the interior of the mounting box, second heat-conducting fins are mounted at the positions, located at the upper ends of the first heat-conducting fins, of the interior of the mounting box, a plurality of third heat-conducting fins are vertically mounted on the upper end faces of the second heat-conducting fins, and a plurality of containing cavities are formed between the interior of the mounting box and the third heat-conducting fins; lithium batteries are arranged in the placing cavities; the lithium battery pack cooling device can effectively improve the cooling effect on the lithium battery pack, and has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of air-cooled cooling technology, specifically to an air-cooled lithium battery pack. Background Technology

[0002] Lithium-ion batteries, as advanced electrochemical energy storage devices, occupy a crucial position in modern technology. From portable electronic devices we use every day, such as smartphones, tablets, and laptops, to large electric vehicles, such as electric cars and electric bicycles, and even large-scale energy storage systems, all rely on the support of lithium-ion batteries.

[0003] Based on the above, the inventors have discovered the following problem: During the charging and discharging process of a lithium battery, heat is inevitably generated due to internal electrochemical reactions and resistance. If this heat cannot be dissipated effectively and in a timely manner, the internal temperature of the battery will rise. Higher temperatures will accelerate side reactions inside the battery, which will consume the active materials in the battery, thereby reducing the battery's capacity and energy density.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide an air-cooled lithium battery pack in order to achieve a more practical value. Utility Model Content

[0005] The purpose of this invention is to provide an air-cooled lithium battery pack to solve the problems mentioned in the background art.

[0006] By adopting the above technical solution, it is easier to cool down the lithium battery pack.

[0007] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0008] A wind-cooled lithium battery pack includes a main body and a cooling mechanism. The main body includes a housing, with brushless fans embedded at both ends of the housing. Each brushless fan has a dustproof net fitted at one end inside the housing. The cooling mechanism includes a pair of mounting boxes, which are respectively located on the inside sides of the housing. A first heat-conducting plate is fixedly installed at the bottom of each mounting box. A second heat-conducting plate is installed above the first heat-conducting plate inside the mounting box. Several third heat-conducting plates are vertically installed on the upper surface of the second heat-conducting plate. Several placement cavities are formed between the inside of the mounting box and the several third heat-conducting plates, and each placement cavity contains a lithium battery.

[0009] Furthermore, two sets of heat pipes are inserted at the bottom of each of the two opposite sides of the mounting box, and the bottom of each set of heat pipes extends through a pair of mounting boxes to the space between the first heat-conducting plate and the second heat-conducting plate.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by installing a heat pipe and extending one end through the mounting box to the space between the first and second heat-conducting plates, the heat on the first and second heat-conducting plates can be circulated and transported away, which can play a role in continuously cooling the lithium battery.

[0011] Furthermore, the heat pipe is fitted with several heat dissipation fins between the pair of mounting boxes.

[0012] The beneficial effect of adopting the above-mentioned further solution is that, by installing heat dissipation fins, the heat transferred to the top of the heat pipe can be transferred again to the heat dissipation fins. At this time, the airflow generated by a pair of brushless fans passes through the space between several heat dissipation fins to cool them down.

[0013] Furthermore, a lid is hinged to one side of the upper end of the box via a pair of hinges, and a semiconductor cooling chip is embedded in the center of the bottom end of the lid.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the box can be sealed by the hinged box cover, and the installation of semiconductor cooling chips can cool the box when it is working, thereby reducing the temperature of the upper part of the box and thus cooling the lithium battery.

[0015] Furthermore, exhaust fans are inserted on both sides of the upper surface of the box cover, and the bottom end of the exhaust fan abuts against the upper end of the semiconductor cooling chip.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by installing an exhaust fan, the hot end of the semiconductor cooling chip can be cooled down, thus promoting the cooling effect of its cold end.

[0017] Furthermore, a pair of locking blocks are fixedly installed on one side of the box cover. Each locking block has a cavity inside, and protrusions are slidably installed at both ends of the cavity.

[0018] The advantage of adopting the above-mentioned further solution is that by opening a cavity inside the lock block and slidingly installing protrusions at both ends, it is convenient for the lock block to move telescopically.

[0019] Furthermore, a partition is fixedly installed inside the cavity, and springs are fixedly installed on both sides of the partition, with one end of each spring connected to a pair of protrusions.

[0020] The beneficial effect of adopting the above-mentioned further solution is that by installing a spring, its elastic force is used to hold the protrusion, so that the protrusion can rebound and reset after being compressed.

[0021] Furthermore, a pair of positioning sleeves are installed on the upper side of one side of the housing, and slots are provided on both sides of the positioning sleeves.

[0022] The advantage of adopting the above-mentioned further solution is that the installation of the positioning sleeve facilitates the insertion of the locking block.

[0023] Furthermore, the locking block is inserted into the positioning sleeve, and the protrusion is engaged with the slot.

[0024] The advantage of adopting the above-mentioned further solution is that by engaging the protrusion with the slot, it is convenient to fix the box body and the box cover together.

[0025] The beneficial effects of this utility model are as follows: This utility model provides a wind-cooled lithium battery pack through the above design. This wind-cooled lithium battery pack has brushless fans embedded at both ends of the housing. The air outlet of one brushless fan is set towards the inside of the housing, and the air outlet of the other brushless fan is set towards the outside, allowing outside air to pass through the inside of the housing. By setting mounting boxes on both sides of the inside of the housing, the first and second heat-conducting plates installed inside can play a role in heat conduction. Several third heat-conducting plates are vertically installed on the upper surface of the second heat-conducting plate. The third heat-conducting plates and the inside of the mounting boxes form several placement cavities, in which the user can place the lithium battery. When the lithium battery is working, the heat generated can be transferred to the first, second, and third heat-conducting plates, thereby reducing the heat of the lithium battery. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the air-cooled lithium battery pack disclosed in an embodiment of the present invention. Figure 1 ;

[0027] Figure 2 This is a three-dimensional structural diagram of the air-cooled lithium battery pack disclosed in an embodiment of the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the air-cooled lithium battery pack disclosed in an embodiment of the present utility model;

[0029] Figure 4 This is a front cross-sectional view of the locking block of the air-cooled lithium battery pack disclosed in an embodiment of the present utility model;

[0030] Figure 5 This is a side cross-sectional view of the heat pipe and mounting box of the air-cooled lithium battery pack disclosed in an embodiment of this utility model.

[0031] In the diagram: 100, main body; 1001, housing; 1002, lid; 1003, brushless fan; 1004, exhaust fan; 1005, locking block; 1006, positioning sleeve; 1007, semiconductor cooling chip; 1008, cavity; 1009, partition; 1010, protrusion; 1011, spring; 1012, slot; 200, cooling mechanism; 2001, mounting box; 2002, first heat-conducting plate; 2003, second heat-conducting plate; 2004, third heat-conducting plate; 2005, lithium battery; 2006, heat pipe; 2007, heat dissipation fins. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 - Figure 5This utility model provides a technical solution: a wind-cooled lithium battery pack, including a main body 100 and a cooling mechanism 200. The main body 100 includes a housing 1001, with brushless fans 1003 embedded at both ends of the housing 1001. Each brushless fan 1003 has a dustproof net fitted at one end inside the housing 1001. The cooling mechanism 200 includes a pair of mounting boxes 2001, respectively located on both sides inside the housing 1001. A first heat-conducting plate 2002 is fixedly mounted at the bottom of each mounting box 2001. A second heat-conducting plate 2003 is mounted above the first heat-conducting plate 2002 inside the mounting box 2001. Several third heat-conducting plates 2004 are vertically mounted on the upper surface of the second heat-conducting plates 2003. Several placement cavities are formed between the inside of the mounting box 2001 and the several third heat-conducting plates 2004, and each placement cavity contains a lithium battery. In 2005, brushless fans 1003 were embedded at both ends of the housing 1001, with the air outlet of one brushless fan 1003 facing inward and the air outlet of the other brushless fan 1003 facing outward, allowing outside air to pass through the interior of the housing 1001. Installation boxes 2001 were installed on both sides of the interior of the housing 1001, and the first heat-conducting plate 2002 and the second heat-conducting plate 2003 installed inside them could conduct heat. Several third heat-conducting plates 2004 were vertically installed on the upper surface of the second heat-conducting plate 2003. The third heat-conducting plates 2004 and the interior of the installation box 2001 formed several placement cavities, in which the user could place the lithium battery. When the lithium battery was working, the heat generated could be transferred to the first heat-conducting plate 2002, the second heat-conducting plate 2003, and the third heat-conducting plate 2004, thereby reducing the heat of the lithium battery 2005.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1 - Figure 5Two sets of heat pipes 2006 are inserted at the bottom of each of the two opposite sides of a pair of mounting boxes 2001. The bottom end of each set of heat pipes 2006 extends through the pair of mounting boxes 2001 to the space between the first heat-conducting plate 2002 and the second heat-conducting plate 2003. Several heat dissipation fins 2007 are fitted between the two sets of heat pipes 2006 and the mounting boxes 2001. A box cover 1002 is hinged to one side of the upper end of the box body 1001 by a pair of hinges. A thermoelectric cooler 1007 is embedded in the center of the bottom end of the box cover 1002. Exhaust fans 1004 are inserted on both sides of the upper end of the box cover 1002. The bottom end of the exhaust fan 1004 abuts against the top end of the thermoelectric cooler 1007. Heat pipes 2006 are installed, with one end extending through the mounting box 2001 to the first heat-conducting plate 2002 and the second heat-conducting plate 2003. Between the heat pipes 2006 and 2005, heat from the first heat-conducting plate 2002 and the second heat-conducting plate 2003 is circulated and transported away, providing continuous cooling for the lithium battery 2005. By installing heat dissipation fins 2007, the heat transferred from the heat pipes 2006 to the top is transferred back to the heat dissipation fins 2007. At this time, the airflow generated by a pair of brushless fans 1003 passes between the heat dissipation fins 2007, cooling them. The hinged cover 1002 seals the housing 1001. The installation of a semiconductor cooling chip 1007 allows it to cool the upper part of the housing 1001 during operation, thus lowering the temperature of the lithium battery 2005. The installation of an exhaust fan 1004 cools the hot end of the semiconductor cooling chip 1007, promoting its cold end cooling effect. The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] Please see Figure 1 - Figure 5A pair of locking blocks 1005 are fixedly installed on one side of the lid 1002. Each locking block 1005 has an interior cavity 1008. Protrusions 1010 are slidably installed at both ends of each cavity 1008. A partition 1009 is fixedly installed inside each cavity 1008. Springs 1011 are fixedly installed on both sides of each partition 1009. One end of each spring 1011 is connected to a pair of protrusions 1010. A pair of positioning sleeves 1006 are installed on the upper side of one side of the box body 1001. Each positioning sleeve 1006 has a slot 1012 on both sides. The locking blocks 1005... The positioning sleeve 1006 is inserted into the locking block 1005, and the protrusion 1010 is engaged with the slot 1012. A cavity 1008 is opened inside the locking block 1005, and the protrusion 1010 is slidably installed at both ends to facilitate its telescopic movement. A spring 1011 is installed to hold the protrusion 1010 against it, so that the protrusion 1010 can rebound and return to its original position after being pressed. The positioning sleeve 1006 is installed to facilitate the insertion of the locking block 1005 into it. The engagement of the protrusion 1010 with the slot 1012 facilitates the fixing between the box body 1001 and the box cover 1002.

[0037] Specifically, the working principle of this air-cooled lithium battery pack is as follows: During use, the user places the lithium battery inside the mounting box 2001, in the placement cavity formed by the third heat-conducting plate 2004 and the inner wall of the mounting box 2001. Then, the box cover 1002 is closed. When the box cover 1002 is closed, the locking block 1005 installed on one side inserts into the positioning sleeve 1006. At this time, the user squeezes the protrusion 1010, which allows the locking block 1005 to be fully inserted into the positioning sleeve 1006. The protrusion 1010 also moves into the slots 10 on both sides of the positioning sleeve 1006 as the locking block 1005 enters. At position 12, the protrusion 1010 is reset under the elastic force of the spring 1011 and engages with the slot 1012, thus completing the closure of the cover 1002 and the body 1001. When the lithium battery is working, it generates heat, which is transferred to the heat pipe 2006 through the mounting box 2001 and the first heat-conducting plate 2002, the second heat-conducting plate 2003 and the third heat-conducting plate 2004. When the evaporation section of the heat pipe 2006 comes into contact with the heat source, the heat from the heat source is transferred to the pipe wall and the working fluid inside the evaporation section. After absorbing heat, the working fluid reaches its boiling point and begins to vaporize. Since the vapor pressure in the evaporation section is higher than that in the condensation section... Driven by the pressure difference, steam flows from the evaporation section to the condensation section. When the steam reaches the condensation section, it encounters the cooler pipe wall, releases its latent heat of vaporization, and condenses back into liquid. The condensed liquid flows back to the evaporation section under the action of capillary force or gravity, thus allowing the heat pipe 2006 to cyclically transfer heat from the first heat-conducting plate 2002, the second heat-conducting plate 2003, and the third heat-conducting plate 2004 to the heat dissipation fins 2007. By activating a pair of brushless fans 1003, one of which has its air outlet facing the interior of the housing 1001, and the other brushless fan 100... The air outlet of 3 is set outward, allowing outside air to pass through the interior of the housing 1001, thereby cooling the heat dissipation fins 2007 and thus cooling the lithium battery 2005. Furthermore, by activating the semiconductor cooling chip 1007, its cold end cools down, which can cool the upper part of the interior of the housing 1001, further cooling the upper surface of the lithium battery 2005 and the heat dissipation fins 2007. By activating a pair of exhaust fans 1004, the temperature of the hot end of the semiconductor cooling chip 1007 can be exhausted into the housing cover 1002, thereby promoting the cooling effect of the cold end of the semiconductor cooling chip 1007.

Claims

1. A wind-cooled lithium battery pack, characterized in that, The device includes a main body (100) and a cooling mechanism (200). The main body (100) includes a housing (1001), with brushless fans (1003) embedded at both ends of the housing (1001). Each brushless fan (1003) has a dustproof net fitted at one end inside the housing (1001). The cooling mechanism (200) includes a pair of mounting boxes (2001), which are respectively located on both sides inside the housing (1001). A first heat-conducting plate (2002) is fixedly installed at the bottom of the interior of the box (2001). A second heat-conducting plate (2003) is installed above the first heat-conducting plate (2002) inside the mounting box (2001). Several third heat-conducting plates (2004) are vertically installed on the upper surface of the second heat-conducting plate (2003). Several placement cavities are formed between the interior of the mounting box (2001) and the several third heat-conducting plates (2004), and lithium batteries (2005) are installed inside each placement cavity.

2. The air-cooled lithium battery pack according to claim 1, characterized in that, Two sets of heat pipes (2006) are inserted at the bottom of the two opposite sides of the pair of mounting boxes (2001). The bottom of each set of heat pipes (2006) extends through the pair of mounting boxes (2001) to the space between the first heat-conducting plate (2002) and the second heat-conducting plate (2003).

3. The air-cooled lithium battery pack according to claim 2, characterized in that, The two sets of heat pipes (2006) are located between a pair of mounting boxes (2001) and each is fitted with a number of heat dissipation fins (2007).

4. The air-cooled lithium battery pack according to claim 1, characterized in that, A box cover (1002) is hinged to one side of the upper end face of the box body (1001) by a pair of hinges, and a semiconductor cooling chip (1007) is embedded in the center of the bottom end of the box cover (1002).

5. A wind-cooled lithium battery pack according to claim 4, characterized in that, Both sides of the upper surface of the box cover (1002) are equipped with exhaust fans (1004), and the bottom end of the exhaust fan (1004) abuts against the upper end of the semiconductor cooling chip (1007).

6. A wind-cooled lithium battery pack according to claim 5, characterized in that, A pair of locking blocks (1005) are fixedly installed on one side of the box cover (1002). Each locking block (1005) has a cavity (1008) inside, and protrusions (1010) are slidably installed at both ends of the cavity (1008).

7. A wind-cooled lithium battery pack according to claim 6, characterized in that, A partition (1009) is fixedly installed inside the cavity (1008). Springs (1011) are fixedly installed on both sides of the partition (1009). One end of each spring (1011) is connected to a pair of protrusions (1010).

8. A wind-cooled lithium battery pack according to claim 7, characterized in that, A pair of positioning sleeves (1006) are installed on the upper side of one side of the housing (1001), and slots (1012) are provided on both sides of the positioning sleeves (1006).

9. A wind-cooled lithium battery pack according to claim 8, characterized in that, The locking block (1005) is inserted into the positioning sleeve (1006), and the protrusion (1010) is engaged with the slot (1012).

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