A lithium battery pack structure with efficient heat dissipation

Abstract

The present invention relates to the technical field of lithium battery heat dissipation, and particularly to a lithium battery pack structure with efficient heat dissipation, including a battery frame; and a positioning bracket; the number of battery heat dissipation components is multiple, the battery protection components are evenly installed inside the battery frame, and each group of positioning brackets is used to tightly fix a battery heat dissipation component. Battery columns are evenly arranged inside the battery heat dissipation component; in the present invention, a gas channel and a liquid channel are provided inside the positioning bracket, and the gas channel and the liquid channel are used in cooperation with a heat dissipation unit, so that the heat accumulated inside the battery columns can be discharged outward, avoiding the phenomenon of heat accumulation. At the same time, the heat dissipation components on the cooling element are arranged at intervals, and the gap between adjacent heat dissipation components is set as a heat dissipation channel, so that the surface in contact with the battery columns is not a closed space, and the cooling gas cools and dissipates heat from the battery columns through the heat dissipation components, improving the service life of the battery columns.

Description

Technical Field

[0001] This application relates to the technical field of lithium battery heat dissipation, and particularly to a lithium battery pack structure with efficient heat dissipation. Background Art

[0002] Lithium batteries generate heat during charging or discharging. Especially under heavy load conditions, a lithium battery pack composed of multiple lithium batteries discharges with a large working current, and the heat generated is correspondingly large. If too much heat cannot be quickly and effectively dissipated, the temperature of the lithium battery pack will rise, often causing the lithium battery to heat up, and then leading to the problem of the lithium battery bulging. Over time, the electronic components in the device will be damaged. Therefore, a lithium battery heat dissipation structure is required during the use of lithium batteries.

[0003] For the Chinese patent with the publication number CN205900743U and the name "Heat Dissipation Structure of Lithium Battery and Lithium Battery Pack Having the Same", specifically, a receiving hole for accommodating a lithium battery is provided on the body of the heat dissipation structure of the lithium battery, and the inner peripheral surface of the receiving hole has a structure that fits the outer peripheral surface of the lithium battery so that the heat generated by the lithium battery is transferred outward through the heat dissipation structure. In this way, the lithium battery installed in the receiving hole is in full contact with the inner peripheral surface of the receiving hole, and the heat generated by the lithium battery during operation is stably and efficiently conducted through the body to the heat dissipation surface of the heat dissipation structure, and is carried away by the flowing air at the heat dissipation surface, thereby improving the heat dissipation efficiency of the heat dissipation structure for the lithium battery and improving the working reliability of the lithium battery pack.

[0004] When the above-mentioned existing technology is used, it can also achieve the function of dissipating the heat generated by the lithium battery during operation. However, when the above-mentioned existing technology dissipates the heat of the lithium battery, it only transfers the heat generated by the lithium battery through the way of heat transfer. The contact surface with the lithium battery is a closed space, and heat is easily accumulated in the gaps between adjacent lithium batteries, and the heat generated by the lithium battery during operation cannot be effectively discharged, and the lithium battery is prone to thermal runaway reaction; secondly, the above-mentioned existing technology only dissipates heat through the way of heat transfer, the heat dissipation effect is poor, and only the heat dissipation surface at the end of the lithium battery can be carried away by the flowing air, and the heat dissipation surface on the outer circumference of the lithium battery cannot effectively contact the air, which will lead to the phenomenon of uneven heat distribution on the outside of the lithium battery; based on this, there is still room for improvement on the basis of the existing lithium battery pack heat dissipation equipment. Summary of the Invention

[0005] In order to accurately achieve the function of effectively dissipating and transferring the heat generated by the lithium battery during operation and avoid the phenomenon of heat accumulation, this application provides a lithium battery pack structure with efficient heat dissipation.

[0006] An efficient heat dissipation lithium battery pack structure provided by this application adopts the following technical solution:

[0007] An efficient heat dissipation lithium battery pack structure includes a battery frame, which is in a rectangular frame structure; and positioning brackets, the number of which is multiple groups, and each group of positioning brackets is symmetrically installed on the battery frame up and down; battery heat dissipation components, the number of which is multiple, and the battery heat dissipation components are evenly installed inside the battery frame. Each group of positioning brackets is used to tightly fix a battery heat dissipation component, and battery columns are evenly arranged inside the battery heat dissipation component.

[0008] The battery heat dissipation component includes a connection frame, a fixing frame, and a heat dissipation unit. The number of connection frames is two, and the connection frame is in a rectangular hollow structure. Fixing frames are evenly installed on the outer side surface of the connection frame, and heat dissipation units are evenly installed between adjacent fixing frames.

[0009] The heat dissipation unit is in a polygonal structure, and the heat dissipation unit is arranged in the gap between adjacent battery columns. The outer side surface of the heat dissipation unit is provided with a first arc surface that is in close contact with the battery column. The first arc surface is a quarter circular arc surface, and an installation interval that cooperates with the battery column is formed between multiple heat dissipation units.

[0010] Furthermore, the heat dissipation unit includes a connection column, a seal, a connection cap, a temperature reduction member, and a heat dissipation member. The connection column is in a cylindrical hollow structure. Seals are respectively installed at the upper and lower ends of the connection column. A through hole communicating with the inside of the connection column is provided in the middle of the seal, and a condensation cavity is provided on the outer side of the seal. Installation holes are evenly provided on the connection column, and connection caps are installed in the installation holes. The installation holes are connected to the inside of the connection column. Temperature reduction members are evenly provided on the outer side of the connection column. The inner side of the temperature reduction member is inserted and matched with the condensation cavity. A concave groove is provided in the middle of the outer side of the temperature reduction member, and heat dissipation members are evenly installed on the concave groove. The heat dissipation member passes through the temperature reduction member and is locked and fixed with the connection cap on the connection column.

[0011] Furthermore, the inner side surface of the temperature reduction member is provided with a second arc surface that is in close contact with the connection column. Plugging rods that cooperate with the condensation cavity are symmetrically installed on the second arc surface. A temperature reduction flow channel that flows from bottom to top is provided inside the temperature reduction member. The outer side surface of the temperature reduction member is an arc surface, and the outer side surfaces between adjacent temperature reduction members form a first arc surface. First sockets and second sockets that cooperate with the heat dissipation member are also evenly provided on the temperature reduction member. The diameter of the first socket is larger than the diameter of the second socket.

[0012] Furthermore, the heat dissipation member includes a heat dissipation frame, a gas guide pipe, a first sealing plate, and a second sealing plate. The heat dissipation frame is installed in the concave groove. A gas guide pipe is installed in the middle of the heat dissipation frame through a bearing. The middle of the gas guide pipe is a hollow structure. A first sealing plate and a second sealing plate are installed on the gas guide pipe. The first sealing plate is in sealing cooperation with the first socket, and the second sealing plate is in sealing cooperation with the second socket. External threads that cooperate with the connection cap are provided on the inner side of the gas guide pipe.

[0013] Furthermore, the heat dissipation rack is in a V-shaped structure. The outer side surface of the heat dissipation rack is an arc surface that fits the battery column, and the inner side surface of the heat dissipation rack is an arc surface that closely adheres to the inner wall of the recessed groove. The heat dissipation rack is made of a heat-conducting material.

[0014] Furthermore, an air flow channel is provided on the inner side surface of the heat dissipation rack. The air flow channel is internally connected to the inside of the air guide pipe. Heat dissipation spray holes are evenly arranged on the outer side surface of the heat dissipation rack, and the heat dissipation spray holes are connected to the air flow channel.

[0015] Furthermore, the heat dissipation elements on the recessed groove are arranged at intervals, and the gap between adjacent heat dissipation elements is set as a heat dissipation channel. The gas inside the air flow channel enters the inside of the heat dissipation channel through the heat dissipation spray holes, and the heat dissipation channels on adjacent cooling elements correspond to and communicate with each other.

[0016] Furthermore, the fixing rack is in a rectangular structure. Extrusion grooves are evenly arranged on both sides of the fixing rack along its length direction. The extrusion grooves are semi-circular grooves. The extrusion grooves include an inner groove and an outer groove. The diameter of the inner groove is larger than that of the outer groove, and the inner groove closely adheres to the outer side surface of the battery column.

[0017] Furthermore, arc-shaped bayonets are symmetrically arranged on the left and right sides inside the connection frame, and the arc-shaped bayonets correspond to the extrusion grooves.

[0018] Furthermore, a gas channel and a liquid channel are arranged inside the positioning bracket. The lower end of the gas channel is connected to the middle through hole of the seal, and the lower end of the liquid channel is connected to the condensation cavity outside the seal through a plug rod.

[0019] In the above technical solution, a lithium battery pack structure with efficient heat dissipation provided by the present invention is provided. The present invention is provided with a gas channel and a liquid channel inside the positioning bracket. The gas channel and the liquid channel are used in cooperation with the heat dissipation unit. The cooling gas enters the connecting column through the seal, so that the cooling gas can pass through the inside of the connecting column from bottom to top. At the same time, part of the cooling gas is ejected outward through the inside of the heat dissipation part, so that the heat accumulated inside the battery column can be discharged outward, avoiding the phenomenon of heat accumulation; the cooling liquid enters the temperature reduction part through the seal, and the cooling liquid also flows from bottom to top inside the temperature reduction part, so that the cooling liquid can fill the inside of the temperature reduction part. The heat generated by the battery column during operation is transferred to the inside of the temperature reduction part through the heat dissipation part. The cooling gas and the cooling liquid flowing from bottom to top circulate through the gas channel and the liquid channel at the upper end of the battery frame, improving the heat transfer and flow effect, avoiding the phenomenon of heat accumulation, and at the same time avoiding the aging of the internal materials of the battery column caused by the battery column being in a high-temperature environment for a long time, preventing phenomena such as deformation, expansion, and liquid leakage of the battery column, and improving the service life of the battery column; at the same time, the heat dissipation parts on the temperature reduction part are arranged at intervals, and the gap between adjacent heat dissipation parts is set as a heat dissipation channel, so that the surface in contact with the battery column is not a closed space. The cooling gas cools and dissipates heat from the battery column through the heat dissipation part, avoiding heat accumulation in the gap between adjacent battery columns and improving the service life of the battery column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings and embodiments.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 It is a three-dimensional structural schematic diagram between the battery heat dissipation component and the battery column of the present invention.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the battery heat dissipation component of the present invention.

[0024] Figure 4 It is a partial three-dimensional structural schematic diagram of the battery heat dissipation component of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the heat dissipation unit of the present invention.

[0026] Figure 6 It is a partial three-dimensional structural schematic diagram of the heat dissipation unit of the present invention.

[0027] Figure 7 It is a sectional structural schematic diagram of the heat dissipation unit of the present invention.

[0028] Figure 8 It is a three-dimensional structural schematic diagram between the temperature reduction part and the heat dissipation part of the present invention.

[0029] Figure 9 It is a schematic cross-sectional structure diagram between the temperature reduction component and the heat dissipation component of the present invention.

[0030] Figure 10 It is a schematic three-dimensional structure diagram of the heat dissipation component of the present invention.

[0031] Figure 11 It is a schematic cross-sectional structure diagram of the heat dissipation component of the present invention.

[0032] Figure 12 It is a schematic three-dimensional structure diagram between the connection frame and the fixing bracket of the present invention.

[0033] Figure 13 It is a schematic three-dimensional structure diagram of the fixing bracket of the present invention.

[0034] Figure 14 It is a schematic three-dimensional structure diagram of the positioning bracket of the present invention.

[0035] Explanation of reference numerals: 1. Battery frame; 2. Positioning bracket; 21. Gas channel; 22. Liquid channel; 3. Battery heat dissipation assembly; 31. Connection frame; 32. Fixing bracket; 321. Extrusion groove; 33. Heat dissipation unit; 331. Connection column; 332. Sealing member; 333. Connection cap; 334. Temperature reduction component; 3341. Insertion rod; 3342. First socket; 3343. Second socket; 335. Heat dissipation component; 3351. Heat dissipation frame; 3352. Air guide pipe; 3353. First sealing plate; 3354. Second sealing plate; 301. Air flow channel; 302. Heat dissipation spray hole; 4. Battery column. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1-14 , a lithium battery pack structure with efficient heat dissipation provided in an embodiment of the present invention includes a battery frame 1, which has a rectangular frame structure; and a plurality of positioning brackets 2, each group of positioning brackets 2 is symmetrically installed on the battery frame 1 up and down; a plurality of battery heat dissipation assemblies 3, the battery heat dissipation assemblies 3 are evenly installed inside the battery frame 1, and each group of positioning brackets 2 is used to tightly fix a battery heat dissipation assembly 3, and battery columns 4 are evenly arranged inside the battery heat dissipation assemblies 3.

[0038] Refer to Figures 2-4As shown in the figure, the battery heat dissipation assembly 3 includes a connection frame 31, a fixing frame 32, and a heat dissipation unit 33. The number of the connection frames 31 is two. The connection frame 31 has a rectangular hollow structure. Fixing frames 32 are uniformly installed on the outer side surface of the connection frame 31, and heat dissipation units 33 are uniformly installed between adjacent fixing frames 32.

[0039] In the above technical solution, the battery columns 4 are uniformly arranged between adjacent heat dissipation units 33, and the outer side surface of the battery column 4 can be in close contact with the surface of the heat dissipation unit 33. At the same time, the connection frame 31 is used to limit and fix the outer side surface of the battery column 4. The fixing frame 32 can not only fix the heat dissipation unit 33, but also press and fix the battery column 4. Furthermore, it can ensure that the outer side surface of the battery column 4 is always in close contact with the surface of the heat dissipation unit 33, ensure that the battery column 4 has an efficient heat dissipation effect, and avoid heat accumulation of the battery column 4 during long-term operation.

[0040] Refer to Figure 5 As shown in the figure, as a preferred technical solution of this embodiment, the heat dissipation unit 33 has a polygonal structure. The heat dissipation unit 33 is arranged in the gap between adjacent battery columns 4. A first arc surface in close contact with the battery column 4 is provided on the outer side surface of the heat dissipation unit 33. The first arc surface is a quarter circular arc surface. An installation interval matching the battery column 4 is formed between multiple heat dissipation units 33.

[0041] In the above technical solution, the first arc surface on the outer side of the heat dissipation unit 33 is a quarter circular arc surface. When multiple heat dissipation units 33 are spliced together, the installation interval formed between multiple heat dissipation units 33 can just be in close contact with the outer side surface of the battery column 4, which can not only ensure the stability of the battery column 4, but also improve the heat dissipation effect of the battery column 4.

[0042] Refer to Figures 5-7 As shown in the figure, as a preferred technical solution of this embodiment, the heat dissipation unit 33 includes a connection column 331, a seal 332, a connection cap 333, a temperature reduction member 334, and a heat dissipation member 335. The connection column 331 has a cylindrical hollow structure. Seals 332 are respectively installed at the upper and lower ends of the connection column 331. A through hole communicating with the inside of the connection column 331 is provided in the middle of the seal 332. A condensation cavity is provided on the outer side of the seal 332. Installation holes are uniformly provided on the connection column 331, and connection caps 333 are installed in the installation holes. The installation holes are connected to the inside of the connection column 331. Temperature reduction members 334 are uniformly provided on the outer side of the connection column 331. The inner side of the temperature reduction member 334 is inserted and matched with the condensation cavity. A concave groove is provided in the middle of the outer side of the temperature reduction member 334, and heat dissipation members 335 are uniformly installed on the concave groove. The heat dissipation member 335 passes through the temperature reduction member 334 and is locked and fixed with the connection cap 333 on the connection column 331.

[0043] Refer to Figure 14As shown, a gas channel 21 and a liquid channel 22 are provided inside the positioning bracket 2. The lower end of the gas channel 21 is communicated with the central through hole of the seal 332, and the lower end of the liquid channel 22 is communicated with the condensation chamber outside the seal 332 through a plug rod. The gas channel 21 and the liquid channel 22 at the lower end of the battery frame 1 are the inflow ends, and the gas channel 21 and the liquid channel 22 at the upper end of the battery frame 1 are the outflow ends.

[0044] In the above technical solution, the gas channel 21 is communicated with the inside of the connecting column 331 through the seal 332, and the liquid channel 22 is communicated with the cooling member 334 through the seal 332. When the battery column 4 generates a large amount of heat during operation, a cooling gas is introduced into the gas channel 21 at the lower end of the battery frame 1, and a cooling liquid is introduced into the liquid channel 22 at the lower end of the battery frame 1. The cooling gas enters the inside of the connecting column 331 through the seal 332, so that the cooling gas can pass through the inside of the connecting column 331 from bottom to top. At the same time, part of the cooling gas is ejected outward through the inside of the heat dissipation member 335, so that the heat accumulated inside the battery column 4 can be discharged outward, avoiding the phenomenon of heat accumulation; the cooling liquid enters the inside of the cooling member 334 through the seal 332, and the cooling liquid also flows from bottom to top inside the cooling member 334, so that the cooling liquid can fill the inside of the cooling member 334. The heat generated by the operation of the battery column 4 is transferred to the inside of the cooling member 334 through the heat dissipation member 335. The cooling gas and the cooling liquid flowing from bottom to top circulate through the gas channel 21 and the liquid channel 22 at the upper end of the battery frame 1, improving the heat transfer and flow effect, avoiding the phenomenon of heat accumulation, and at the same time, avoiding the phenomenon of aging of the internal materials of the battery column 4 caused by the battery column 4 being in a high temperature environment for a long time, preventing phenomena such as deformation, expansion, and liquid leakage of the battery column 4, and improving the service life of the battery column 4.

[0045] Refer to Figures 7-9 As shown, as a preferred technical solution of this embodiment, a second arc surface in close contact with the connecting column 331 is provided on the inner side surface of the cooling member 334. Plug rods 3341 cooperating with the condensation chamber are symmetrically installed on the second arc surface. A cooling flow channel flowing from bottom to top is provided inside the cooling member 334. The outer side surface of the cooling member 334 is an arc surface, and the outer side surfaces between adjacent two cooling members 334 form a first arc surface. First sockets 3342 and second sockets 3343 cooperating with the heat dissipation member 335 are also evenly provided on the cooling member 334. The diameter of the first socket 3342 is larger than the diameter of the second socket 3343.

[0046] Refer to Figures 10-11As shown in the figure, as a preferred technical solution of this embodiment, the heat dissipation member 335 includes a heat dissipation frame 3351, a gas guide pipe 3352, a first sealing plate 3353 and a second sealing plate 3354. The heat dissipation frame 3351 is installed in the concave groove. The middle part of the heat dissipation frame 3351 is installed with the gas guide pipe 3352 through a bearing. The middle part of the gas guide pipe 3352 is a hollow structure. The first sealing plate 3353 and the second sealing plate 3354 are installed on the gas guide pipe 3352. The first sealing plate 3353 is in sealing cooperation with the first socket 3342, and the second sealing plate 3354 is in sealing cooperation with the second socket 3343. An external thread for cooperating with the connecting cap 333 is provided inside the gas guide pipe 3352.

[0047] In the above technical solution, the heat dissipation members 335 are evenly installed inside the concave grooves on the outer side of the temperature reduction member 334. When installing the heat dissipation members 335 one by one, first, the gas guide pipe 3352 inside the heat dissipation member 335 passes through the inside of the first socket 3342 and the second socket 3343 on the temperature reduction member 334. Since the diameter of the first socket 3342 is larger than that of the second socket 3343, the gas guide pipe 3352 can drive the second sealing plate 3354 to pass through the inside of the first socket 3342, so that the second sealing plate 3354 can block and seal the second socket 3343, and the first sealing plate 3353 can block and seal the first socket 3342. A hexagonal screw hole is provided at the end of the gas guide pipe 3352. By driving the gas guide pipe 3352 to rotate with a wrench, the external thread inside the gas guide pipe 3352 can be accurately and sealingly matched with the connecting cap 333, which can not only prevent the cooling liquid inside the cooling flow channel from leaking, but also avoid the gas inside the connecting column 331 from leaking.

[0048] When cooling the battery column 4, the heat dissipation frame 3351 transfers the heat generated by the operation of the battery column 4 to the temperature reduction member 334 by means of heat transfer. The cooling flow channel inside the temperature reduction member 334 transfers the heat out through the cooling liquid; at the same time, the cooling gas inside the connecting column 331 is ejected out to the outer side surface of the battery column 4 through the gas guide pipe 3352, preventing the heat from accumulating in the area between the outer side surfaces of the battery column 4, and thus can effectively improve the heat dissipation effect and avoid heat accumulation.

[0049] Continue to refer to Figures 10-11 As shown in the figure, as a preferred technical solution of this embodiment, the heat dissipation frame 3351 has a V-shaped structure. The outer side surface of the heat dissipation frame 3351 is an arc surface that fits the battery column 4, and the inner side surface of the heat dissipation frame 3351 is an arc surface that closely adheres to the inner wall of the concave groove. The heat dissipation frame 3351 is made of a heat-conducting material.

[0050] In the above technical solution, one side of the heat dissipation rack 3351 is in close contact with the surface of the battery column 4, and the other side of the heat dissipation rack 3351 is in close contact with the surface of the temperature reduction member 334. When a large amount of heat is generated during the operation of the battery column 4, the heat is conducted to the heat dissipation rack 3351 through heat transfer. The heat dissipation rack 3351 then transfers the heat to the surface of the temperature reduction member 334 through heat transfer, so that the heat generated during the operation of the battery column 4 can be accurately transferred out, avoiding the phenomena of aging and damage caused by the battery column 4 being in a high temperature state for a long time.

[0051] Continue to refer to Figures 10-11 As shown, as a preferred technical solution of this embodiment, an air flow channel 301 is further provided on the inner side surface of the heat dissipation rack 3351. The air flow channel 301 is internally connected to the inside of the air guide pipe 3352. Heat dissipation spray holes 302 are uniformly arranged on the outer side surface of the heat dissipation rack 3351, and the heat dissipation spray holes 302 are connected to the air flow channel 301.

[0052] In the above technical solution, one end of the air guide pipe 3352 is internally connected to the inside of the connecting column 331, and the other end of the air guide pipe 3352 is connected to the air flow channel 301. The cooling gas inside the connecting column 331 enters the inside of the air flow channel 301 through the air guide pipe 3352, so that the heat accumulated on the outer side surface of the heat dissipation rack 3351 can flow along the air flow channel 301. At the same time, the gas inside the air flow channel 301 can be ejected from the inside of the heat dissipation spray holes 302. The heat dissipation effect can be significantly improved through gas circulation, ensuring the stable operation of the battery column 4.

[0053] Continue to refer to Figures 10-11 As shown, as a preferred technical solution of this embodiment, the heat dissipation members 335 on the concave groove are arranged at intervals, and the gap between adjacent heat dissipation members 335 is set as a heat dissipation channel. The gas inside the air flow channel 301 enters the inside of the heat dissipation channel through the heat dissipation spray holes 302, and the heat dissipation channels on adjacent temperature reduction members 334 correspond to and communicate with each other.

[0054] In the above technical solution, the heat dissipation channels between the heat dissipation members 335 outside the battery column 4 correspond to and communicate with each other. Even if the battery column 4 is located in the very middle of the connection frame 31, the gas can still dissipate heat from the outside of the battery column 4 in the middle of the connection frame 31, and there will be no phenomenon of heat accumulation. It ensures that the cooling gas can flow between adjacent battery columns 4, avoiding the phenomenon that the accumulated hot air cannot be effectively discharged, resulting in the bulging of the battery column 4. At the same time, the non-flowing accumulation of hot air will hinder the heat exchange inside the battery column 4, leading to heat accumulation. In a high-temperature environment, the temperature inside the battery column 4 will rise rapidly, thereby triggering a series of thermal runaway reactions, such as electrolyte decomposition, cathode material inactivation, etc., thus accelerating the decline of battery performance.

[0055] Refer to Figure 13As shown, as a preferred technical solution of this embodiment, the fixing frame 32 has a rectangular structure. Extrusion grooves 321 are uniformly arranged on both sides of the fixing frame 32 along its length direction. The extrusion grooves 321 are semi-circular grooves. The extrusion grooves 321 include an inner groove and an outer groove. The diameter of the inner groove is larger than that of the outer groove. The inner groove is in close contact with the outer side surface of the battery column 4.

[0056] In the above technical solution, the fixing frame 32 plays a role in fixing and limiting the battery column 4 and the heat dissipation unit 33. The fixing frame 32 is arranged between two rows of vertically arranged battery columns 4. The extrusion grooves 321 on the outer side of the fixing frame 32 can accurately cooperate with the battery column 4. The inner groove of the extrusion groove 321 is used to fill the gap between adjacent battery columns 4, and the outer groove of the extrusion groove 321 is used to press the outer end surface of the battery column 4, so that the battery column 4 can be accurately positioned and fixed, preventing the phenomenon that the battery column 4 shakes and is damaged.

[0057] A round hole cooperating with the seal 332 is also provided on the upper end surface of the fixing frame 32. The end of the seal 332 can pass through the round hole and communicate with the gas channel 21 and the liquid channel 22 inside the positioning bracket 2. At the same time, the fixing frame 32 can also limit the seal 332, so that the heat dissipation unit 33 can be accurately installed between the two fixing frames 32.

[0058] Refer to Figure 12 As shown, as a preferred technical solution of this embodiment, arc-shaped clamping openings are also symmetrically arranged on the left and right sides inside the connecting frame 31. The arc-shaped clamping openings correspond to the extrusion grooves 321.

[0059] In the above technical solution, the arc-shaped clamping openings cooperate with the extrusion grooves 321. When the battery columns 4 at the left and right ends inside the connecting frame 31 come into contact with the connecting frame 31, the arc-shaped clamping openings are used to clamp and limit the battery columns 4 to prevent the phenomenon that the battery columns 4 shake.

[0060] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium battery pack structure with high heat dissipation efficiency, characterized in that: include: A battery frame (1) having a rectangular frame structure; as well as Positioning brackets (2), which are provided in multiple groups, and each group of positioning brackets (2) is symmetrically installed on the battery frame (1) in an upper and lower manner; A plurality of battery heat dissipation components (3) are evenly mounted inside the battery frame (1); each set of positioning brackets (2) is used to compress and fix a battery heat dissipation component (3); and battery columns (4) are evenly arranged inside the battery heat dissipation components (3); The battery heat dissipation assembly (3) comprises a connecting frame (31), a fixing frame (32) and a heat dissipation unit (33); the connecting frames (31) are two in number, the connecting frames (31) are rectangular hollow structures, the fixing frames (32) are evenly mounted on the outer surface of the connecting frame (31), and the heat dissipation units (33) are evenly mounted between adjacent fixing frames (32); The heat dissipation unit (33) has a polygonal structure. The heat dissipation unit (33) is arranged in the gap between adjacent battery columns (4). The outer side surface of the heat dissipation unit (33) is provided with a first arc surface that is in close contact with the battery column (4). The first arc surface is a quarter arc surface. A mounting area that matches the battery column (4) is formed between the plurality of heat dissipation units (33). The heat dissipation unit (33) comprises a connecting column (331), a sealing member (332), a connecting cap (333), a cooling member (334) and a heat dissipation member (335); the connecting column (331) is a cylindrical hollow structure; the upper and lower ends of the connecting column (331) are respectively provided with sealing members (332); a through hole communicating with the interior of the connecting column (331) is provided in the middle of the sealing member (332); a condensation chamber is provided on the outer side of the sealing member (332); and the connecting column (331) is evenly provided with A mounting hole is provided, a connecting cap (333) is installed in the mounting hole, the mounting hole is communicated with the inside of the connecting column (331), a cooling element (334) is evenly arranged on the outside of the connecting column (331), the inside of the cooling element (334) is plugged into the condensing chamber, a recessed groove is provided in the middle of the outside of the cooling element (334), a heat sink (335) is evenly installed on the recessed groove, and the heat sink (335) passes through the cooling element (334) and is locked and fixed with the connecting cap (333) on the connecting column (331).

2. The lithium battery pack structure with high heat dissipation efficiency according to claim 1, characterized in that: The inner side surface of the cooling element (334) is provided with a second curved surface that is tightly attached to the connecting column (331); the second curved surface is symmetrically provided with a plug-in rod (3341) that cooperates with the condensing chamber; a cooling flow channel that flows from bottom to top is provided inside the cooling element (334); the outer side surface of the cooling element (334) is an arc-shaped surface; the outer side surfaces between two adjacent cooling elements (334) form a first curved surface; the cooling element (334) is also evenly provided with a first socket (3342) and a second socket (3343) that cooperate with the heat dissipation element (335); the diameter of the first socket (3342) is larger than the diameter of the second socket (3343).

3. The lithium battery pack structure with high heat dissipation efficiency according to claim 2, characterized in that: The heat sink (335) comprises a heat sink (3351), an air guide tube (3352), a first sealing plate (3353) and a second sealing plate (3354); the heat sink (3351) is installed in the recessed groove; an air guide tube (3352) is installed in the middle of the heat sink (3351) via a bearing; the middle of the air guide tube (3352) is a hollow structure; the first sealing plate (3353) and the second sealing plate (3354) are installed on the air guide tube (3352); the first sealing plate (3353) is sealed with the first socket (3342); the second sealing plate (3354) is sealed with the second socket (3343); and an external thread that is matched with the connecting cap (333) is provided on the inner side of the air guide tube (3352).

4. The lithium battery pack structure with high heat dissipation efficiency according to claim 3, characterized in that: The heat sink (3351) has a V-shaped structure, the outer side of the heat sink (3351) is an arc-shaped surface that fits the battery column (4), the inner side of the heat sink (3351) is an arc-shaped surface that fits tightly against the inner wall of the recessed groove, and the heat sink (3351) is made of a heat-conducting material.

5. The lithium battery pack structure with high heat dissipation efficiency according to claim 4, characterized in that: The inner side of the heat dissipation frame (3351) is also provided with an air flow channel (301), the air flow channel (301) is connected to the inside of the air guide tube (3352), and the outer side of the heat dissipation frame (3351) is evenly provided with heat dissipation holes (302), the heat dissipation holes (302) are connected to the air flow channel (301).

6. The lithium battery pack structure with high heat dissipation efficiency according to claim 5, characterized in that: The heat dissipation elements (335) on the recessed grooves are arranged at intervals, and the gaps between adjacent heat dissipation elements (335) are arranged as heat dissipation channels. The gas inside the airflow channel (301) enters the heat dissipation channel through the heat dissipation nozzles (302), and the heat dissipation channels on adjacent cooling elements (334) correspond to each other and are connected.

7. The lithium battery pack structure with high heat dissipation efficiency according to claim 1, characterized in that: The fixing frame (32) has a rectangular structure, and extrusion grooves (321) are evenly arranged on both sides of the fixing frame (32) along the length direction thereof. The extrusion grooves (321) are semicircular grooves, and the extrusion grooves (321) include an inner groove and an outer groove. The diameter of the inner groove is larger than the diameter of the outer groove, and the inner groove is in close contact with the outer side surface of the battery column (4).

8. The lithium battery pack structure with high heat dissipation efficiency according to claim 7, characterized in that: The connecting frame (31) is also provided with arc-shaped bayonet holes symmetrically on the left and right sides thereof, and the arc-shaped bayonet holes correspond to the extrusion grooves (321).

9. The lithium battery pack structure with high heat dissipation efficiency according to claim 1, characterized in that: The positioning bracket (2) is provided with a gas channel (21) and a liquid channel (22) inside, the lower end of the gas channel (21) is connected to the middle through hole of the sealing member (332), and the lower end of the liquid channel (22) is connected to the condensation chamber outside the sealing member (332) through an insertion rod.

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