High-efficiency heat dissipation lithium battery pack structure

Abstract

The invention relates to the technical field of lithium battery heat dissipation, in particular to an efficient heat dissipation lithium battery pack structure which comprises a battery frame. And a positioning bracket; the number of the battery heat dissipation assemblies is multiple, the battery protection assemblies are evenly installed in the battery frame, each set of positioning support is used for pressing and fixing one battery heat dissipation assembly, and battery columns are evenly arranged in the battery heat dissipation assemblies; according to the invention, the gas channel and the liquid channel are arranged in the positioning bracket, and the gas channel and the liquid channel are matched with the heat dissipation unit for use, so that heat accumulated on the inner side of the battery column can be discharged outwards, and the phenomenon of heat accumulation is avoided; the gaps between the adjacent heat dissipation pieces are arranged to be the heat dissipation channels, so that the surfaces in contact with the battery columns are not closed spaces, cooling gas cools and dissipates heat of the battery columns through the heat dissipation pieces, and the service life of the battery columns is prolonged.

Description

Technical Field

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

[0002] Lithium batteries generate heat when charging or discharging, especially under heavy load. A lithium battery pack composed of multiple lithium batteries discharges at a large working current, and the heat generated is also correspondingly large. If the excessive heat cannot be quickly and effectively dissipated, the temperature of the lithium battery pack will rise, which will often cause the lithium battery to heat up, and then cause the lithium battery to bulge. Over time, the electronic components in the device will be damaged. Therefore, a lithium battery heat dissipation structure is needed when using lithium batteries.

[0003] The Chinese patent with announcement number CN205900743U and title “Heat dissipation structure of lithium battery and lithium battery pack having the same” specifically provides a receiving hole for accommodating lithium battery on the body of the heat dissipation structure of lithium battery, and the inner peripheral surface of the receiving hole has a structure that fits with the outer peripheral surface of lithium battery so that the heat generated by lithium battery can be 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 taken away by the flowing air at the heat dissipation surface, thereby improving the heat dissipation efficiency of the heat dissipation structure for lithium battery and improving the working reliability of the lithium battery pack.

[0004] When used, the above-mentioned existing technology can also realize the function of dissipating the heat generated by the lithium battery during operation. However, when dissipating the heat of the lithium battery, the above-mentioned existing technology only transfers the heat generated by the lithium battery by heat transfer. The contact surface with the lithium battery is a closed space, and the heat is easily accumulated in the gap between adjacent lithium batteries. The heat generated by the lithium battery cannot be effectively discharged, and the lithium battery is prone to thermal runaway reaction; secondly, the above-mentioned existing technology only dissipates heat by heat transfer, and the heat dissipation effect is poor. Only the heat dissipation surface located at the end of the lithium battery can be carried away by the flowing air, and the heat dissipation surface located on the outer circumference of the lithium battery cannot effectively contact the air, which will lead to 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 realize the function of effectively dissipating the heat generated by the lithium battery during operation and avoid the phenomenon of heat accumulation, the present application provides a lithium battery pack structure with efficient heat dissipation.

[0006] The present application provides a lithium battery pack structure with high efficiency in heat dissipation, which adopts the following technical solution:

[0007] A lithium battery pack structure with high heat dissipation efficiency comprises a battery frame in a rectangular frame structure; a plurality of positioning brackets, each group of which is symmetrically mounted on the battery frame; a plurality of battery heat dissipation components, each battery protection component is evenly mounted inside the battery frame, each group of positioning brackets is used to compress and fix a battery heat dissipation component, and battery columns are evenly arranged inside the battery heat dissipation component.

[0008] The battery heat dissipation assembly includes a connecting frame, a fixing frame and a heat dissipation unit. There are two connecting frames, and the connecting frames are rectangular hollow structures. The fixing frames are evenly installed on the outer side of the connecting frame, and the heat dissipation units are evenly installed between adjacent fixing frames.

[0009] The heat dissipation unit has a polygonal structure and is arranged in the gap between adjacent battery columns. The outer side of the heat dissipation unit is provided with a first arc surface that is closely attached to the battery column. The first arc surface is a quarter arc surface. An installation interval that cooperates with the battery column is formed between multiple heat dissipation units.

[0010] Furthermore, the heat dissipation unit includes a connecting column, a sealing member, a connecting cap, a cooling member and a heat dissipation member. The connecting column is a cylindrical hollow structure. Sealing members are respectively installed at the upper and lower ends of the connecting column. A through hole connected to the interior of the connecting column is provided in the middle of the sealing member. A condensation chamber is provided on the outside of the sealing member. Mounting holes are evenly provided on the connecting column. A connecting cap is installed in the mounting hole. The mounting hole is connected to the interior of the connecting column. Cooling members are evenly provided on the outside of the connecting column. The inner side of the cooling member is plugged into the condensation chamber. A recessed groove is provided in the middle of the outer side of the cooling member. Heat dissipation members are evenly installed on the recessed groove. The heat dissipation member passes through the cooling member and is locked and fixed to the connecting cap on the connecting column.

[0011] Furthermore, the inner side surface of the cooling component is provided with a second curved surface that is tightly attached to the connecting column, and the second curved surface is symmetrically installed with connecting rods that cooperate with the condensation chamber. A cooling flow channel that flows from bottom to top is provided inside the cooling component. The outer side surface of the cooling component is a curved surface, and the outer side surface between two adjacent cooling components constitutes a first curved surface. The cooling component is also evenly provided with a first socket and a second socket that cooperate with the heat dissipation component, and the diameter of the first socket is larger than the diameter of the second socket.

[0012] Furthermore, the heat sink includes a heat sink frame, an air guide pipe, a first sealing plate and a second sealing plate. The heat sink frame is installed in the recessed groove. The air guide pipe is installed in the middle of the heat sink frame through a bearing. The middle of the air guide pipe is a hollow structure. The first sealing plate and the second sealing plate are installed on the air guide pipe. The first sealing plate is sealed with the first socket, and the second sealing plate is sealed with the second socket. The inner side of the air guide pipe is provided with an external thread that cooperates with the connecting cap.

[0013] Furthermore, the heat sink has a V-shaped structure, the outer side of the heat sink is an arc-shaped surface that fits the battery column, the inner side of the heat sink is an arc-shaped surface that fits tightly against the inner wall of the recessed groove, and the heat sink is made of a heat-conducting material.

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

[0015] Furthermore, the heat sinks on the recessed grooves are arranged at intervals, and the gaps between adjacent heat sinks are set as heat dissipation channels. The gas inside the airflow channel enters the heat dissipation channel through the heat dissipation nozzles, and the heat dissipation channels on adjacent cooling elements correspond to each other and are connected.

[0016] Furthermore, the fixing frame is of a rectangular structure, and extrusion grooves are evenly arranged on both sides of the fixing frame along its length direction. The extrusion grooves are semicircular grooves, including inner grooves and outer grooves. 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 of the battery column.

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

[0018] Furthermore, a gas channel and a liquid channel are provided 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 chamber outside the seal through the insertion rod.

[0019] In the above technical scheme, the present invention provides a lithium battery pack structure with high efficiency in heat dissipation. The present invention provides a gas channel and a liquid channel inside the positioning bracket. The gas channel and the liquid channel are used in conjunction with the heat dissipation unit. The cooling gas enters the interior of the connecting column through the sealing member, so that the cooling gas can pass through the interior of the connecting column from bottom to top. At the same time, part of the cooling gas is ejected outward through the heat dissipation member, so that the heat accumulated on the inner side of the battery column can be discharged outward, avoiding the phenomenon of heat accumulation; the cooling liquid enters the interior of the cooling member through the sealing member, and the cooling liquid also flows from bottom to top inside the cooling member, so that the cooling liquid can fill the interior of the cooling member, and the heat generated by the operation of the battery column is transferred to the cooling member through the heat dissipation member. Inside the component, the cooling gas and cooling liquid flowing from bottom to top circulate through the gas channel and liquid channel at the upper end of the battery frame, thereby improving the heat transfer and flow effect, avoiding the accumulation of heat, and at the same time preventing the battery column from being in a high temperature environment for a long time, which leads to aging of the internal materials of the battery column, preventing the battery column from deformation, expansion, leakage, etc., and improving the service life of the battery column; at the same time, the heat sinks on the cooling component are arranged at intervals, and the gaps between adjacent heat sinks are set as heat dissipation channels, so that the surface in contact with the battery column is not a closed space, and the cooling gas cools and dissipates the heat of the battery column through the heat sink, avoiding heat accumulation in the gaps between adjacent battery columns, and improving the service life of the battery column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

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

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure 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 assembly of the present invention.

[0024] Figure 4 It is a partial three-dimensional structural schematic diagram of the battery heat dissipation assembly 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 schematic diagram of the cross-sectional structure of the heat dissipation unit of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure between the temperature-cooling component and the heat-dissipating component of the present invention.

[0029] Fig. 9 It is a schematic diagram of the cross-section structure between the temperature-reducing component and the heat-dissipating component of the present invention.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the heat sink of the present invention.

[0031] Fig.11 It is a schematic diagram of the cross-sectional structure of the heat sink of the present invention.

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

[0033] Fig.13 It is a three-dimensional structural schematic diagram of the fixing frame of the present invention.

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

[0035] Explanation of the reference numerals: 1. battery frame; 2. positioning bracket; 21. gas channel; 22. liquid channel; 3. battery heat dissipation assembly; 31. connecting frame; 32. fixing frame; 321. extrusion groove; 33. heat dissipation unit; 331. connecting column; 332. sealing member; 333. connecting cap; 334. cooling member; 3341. plug-in rod; 3342. first socket; 3343. second socket; 335. heat dissipation member; 3351. heat dissipation frame; 3352. air guide tube; 3353. first sealing plate; 3354. second sealing plate; 301. air flow channel; 302. heat dissipation nozzle; 303. heat dissipation channel; 4. battery column. DETAILED DESCRIPTION

[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] See also Figure 1-14 An efficient heat dissipation lithium battery pack structure provided in an embodiment of the present invention comprises a battery frame 1, which is a rectangular frame structure; and positioning brackets 2, which are in a plurality of groups, and each group of positioning brackets 2 is symmetrically installed on the battery frame 1; there are a plurality of battery heat dissipation components 3, and the battery protection components 3 are evenly installed inside the battery frame 1, and each group of positioning brackets 2 is used to press and fix a battery heat dissipation component 3, and battery columns 4 are evenly arranged inside the battery heat dissipation component 3.

[0038] See also Figure 2-Figure 4As shown, the battery heat dissipation assembly 3 includes a connecting frame 31, a fixing frame 32 and a heat dissipation unit 33. The number of the connecting frames 31 is two, and the connecting frames 31 are rectangular hollow structures. The fixing frames 32 are evenly installed on the outer surface of the connecting frame 31, and the heat dissipation units 33 are evenly installed between adjacent fixing frames 32.

[0039] In the above technical solution, the battery column 4 is evenly arranged between adjacent heat dissipation units 33, and the outer side surface of the battery column 4 can be tightly attached to the surface of the heat dissipation unit 33. At the same time, the connecting 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, thereby ensuring that the outer side surface of the battery column 4 is always tightly attached to the surface of the heat dissipation unit 33, ensuring that the battery column 4 can have an efficient heat dissipation effect, and avoiding heat accumulation when the battery column 4 works for a long time.

[0040] See also Figure 5 As shown, as a preferred technical solution of this embodiment, the heat dissipation unit 33 is in a polygonal structure, and 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 close to the battery column 4, and the first arc surface is a quarter-circular arc surface. An installation interval that cooperates with 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 arc surface, so that when multiple heat dissipation units 33 are spliced ​​with each other, the installation interval formed between the multiple heat dissipation units 33 can just fit tightly against 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] See also Figure 5-Figure 7 As shown, as a preferred technical solution of this embodiment, the heat dissipation unit 33 includes 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 installed with sealing members 332. The middle part of the sealing member 332 is provided with a through hole connected to the inside of the connecting column 331. A condensation chamber is provided on the outer side of the sealing member 332. Mounting holes are evenly provided on the connecting column 331. A connecting cap 333 is installed in the mounting hole. The mounting hole is connected to the inside of the connecting column 331. Cooling members 334 are evenly provided on the outer side of the connecting column 331. The inner side of the cooling member 334 is plugged into the condensation chamber. A recessed groove is provided in the middle part of the outer side of the cooling member 334. Heat dissipation members 335 are evenly installed on the recessed groove. The heat dissipation member 335 passes through the cooling member 334 and is locked and fixed with the connecting cap 333 on the connecting column 331.

[0043] See also Fig.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 connected with the middle through hole of the seal 332, and the lower end of the liquid channel 22 is connected with the condensation chamber outside the seal 332 through an insertion 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 connected to the inside of the connecting column 331 through the sealing member 332, and the liquid channel 22 is connected to the cooling member 334 through the sealing member 332. When the battery column 4 generates a large amount of heat during operation, cooling gas is introduced into the gas channel 21 located at the lower end of the battery frame 1, and cooling liquid is introduced into the liquid channel 22 located at the lower end of the battery frame 1. The cooling gas enters the inside of the connecting column 331 through the sealing member 332, so that the cooling gas can pass through the inside of the connecting column 331 from bottom to top, and at the same time, part of the cooling gas is ejected outward through the inside of the heat sink 335, so that the heat accumulated on the inner side of the battery column 4 can be discharged outward, thereby avoiding the phenomenon of heat accumulation. The cooling liquid enters the cooling component 334 through the sealing component 332, and the cooling liquid also flows from bottom to top in the cooling component 334, so that the cooling liquid can fill the cooling component 334. The heat generated by the battery column 4 is transferred to the cooling component 334 through the heat dissipation component 335. The cooling gas and 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, thereby improving the heat transfer and flow effect and avoiding the accumulation of heat. At the same time, it can avoid the battery column 4 being in a high temperature environment for a long time, which leads to the aging of the internal materials of the battery column 4, prevent the battery column 4 from deformation, expansion, leakage, etc., and improve the service life of the battery column 4.

[0045] See also Figure 7-Figure 9 As shown, as a preferred technical solution of this embodiment, the inner side surface of the cooling component 334 is provided with a second curved surface that is tightly attached to the connecting column 331, and the second curved surface is symmetrically installed with a connecting rod 3341 that cooperates with the condensing chamber. A cooling flow channel that flows from bottom to top is provided inside the cooling component 334, and the outer side surface of the cooling component 334 is an arc-shaped surface. The outer side surface between two adjacent cooling components 334 constitutes a first arc-shaped surface. The cooling component 334 is also evenly provided with a first socket 3342 and a second socket 3343 that cooperate with the heat dissipation component 335, and the diameter of the first socket 3342 is larger than the diameter of the second socket 3343.

[0046] See also Figure 10-11As shown, as a preferred technical solution of this embodiment, the heat sink 335 includes a heat sink frame 3351, an air guide tube 3352, a first sealing plate 3353 and a second sealing plate 3354. The heat sink frame 3351 is installed in the recessed groove, and the air guide tube 3352 is installed on the middle part of the heat sink frame 3351 through a bearing. The middle part of the air guide tube 3352 is a hollow structure, and 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, and the second sealing plate 3354 is sealed with the second socket 3343. The inner side of the air guide tube 3352 is provided with an external thread that cooperates with the connecting cap 333.

[0047] In the above technical solution, the heat sink 335 is evenly installed in the concave groove outside the cooling element 334. When the heat sink 335 is installed one by one, the air guide 3352 inside the heat sink 335 passes through the first socket 3342 and the second socket 3343 on the cooling element 334. Since the diameter of the first socket 3342 is larger than that of the second socket 3343, the air guide 3352 can drive the second sealing plate 3354 to pass through the first socket 3342, so that the second sealing plate 3354 can be opened. 354 can seal the second socket 3343, the first sealing plate 3353 can seal the first socket 3342, and a hexagonal screw hole is provided at the end of the air guide tube 3352. The air guide tube 3352 is rotated by a wrench so that the external thread on the inner side of the air guide tube 3352 can accurately seal with the connecting cap 333, which can prevent the cooling liquid inside the cooling channel from leaking, and avoid the gas inside the connecting column 331 from leaking.

[0048] When cooling the battery column 4, the heat sink 3351 transfers the heat generated by the battery column 4 to the cooling component 334 by means of heat transfer, and the cooling flow channel inside the cooling component 334 transfers the heat through the cooling liquid; at the same time, the cooling gas inside the connecting column 331 is sprayed to the outer surface of the battery column 4 through the air duct 3352, preventing heat from accumulating in the area between the outer sides of the battery column 4, thereby effectively improving the heat dissipation effect and avoiding heat accumulation.

[0049] Continue reading Figure 10-11 As shown, as the preferred technical solution of this embodiment, the heat sink 3351 is 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 heat-conductive material.

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

[0051] Continue reading Figure 10-11 As shown, as the preferred technical solution of this embodiment, the inner side of the heat sink 3351 is also provided with an air flow channel 301, the air flow channel 301 is connected with the inside of the air guide tube 3352, and the outer side of the heat sink 3351 is evenly provided with heat dissipation holes 302, and the heat dissipation holes 302 are connected with the air flow channel 301.

[0052] In the above technical solution, one end of the air duct 3352 is connected to the interior of the connecting column 331, and the other end of the air duct 3352 is connected to the air flow channel 301. The cooling gas inside the connecting column 331 enters the air flow channel 301 through the air duct 3352, so that the heat accumulated on the outer surface of the heat dissipation frame 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 heat dissipation nozzle 302. The heat dissipation effect can be significantly improved through gas circulation, thereby ensuring the stable operation of the battery column 4.

[0053] Continue reading Figure 10-11 As shown, as a preferred technical solution of this embodiment, the heat sinks 335 on the recessed grooves are arranged at intervals, and the gaps between adjacent heat sinks 335 are set as heat dissipation channels 303. The gas inside the airflow channel 301 enters the heat dissipation channel 303 through the heat dissipation nozzles 302, and the heat dissipation channels 303 on adjacent cooling components 334 correspond to each other and are connected.

[0054] In the above technical solution, the heat dissipation channels 303 between the heat sinks 335 on the outside of the battery column 4 correspond to each other and are connected. Even if the battery column 4 is in the middle of the connecting frame 31, the gas can dissipate heat to the outside of the battery column 4 in the middle of the connecting frame 31, and heat will not accumulate. This ensures that the cooling gas can flow between adjacent battery columns 4, thereby preventing the accumulated hot air from being effectively discharged and causing the battery column 4 to swell. At the same time, the accumulation of hot air without flow will hinder the heat exchange inside the battery column 4, resulting in 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, inactivation of positive electrode materials, etc., thereby accelerating the decline of battery performance.

[0055] See also Fig.13As shown, as the preferred technical solution of this embodiment, the fixing frame 32 is of a rectangular structure, and extrusion grooves 321 are evenly arranged on both sides of the fixing frame 32 along its length direction. 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 of the battery column 4.

[0056] In the above technical solution, the fixing frame 32 serves to fix and limit the battery column 4 and the heat dissipation unit 33. The fixing frame 32 is arranged between two rows of battery columns 4 arranged vertically. The extrusion groove 321 on the outside of the fixing frame 32 can accurately match the battery column 4. The inner groove of the extrusion groove 321 is used to fill the gap between adjacent battery columns 4. 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 to prevent the battery column 4 from shaking and being damaged.

[0057] A circular hole cooperating with the seal 332 is also provided on the upper end surface of the fixing frame 32, and the end of the seal 332 can pass through the circular 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] See also Fig.12 As shown, as a preferred technical solution of this embodiment, arc-shaped bayonet holes are symmetrically arranged on the left and right sides inside the connecting frame 31 , and the arc-shaped bayonet holes correspond to the extrusion grooves 321 .

[0059] In the above technical solution, the arc-shaped snap fits with the extrusion groove 321 . When the battery columns 4 at the left and right ends of the connecting frame 31 are in contact with the connecting frame 31 , the arc-shaped snap fit is used to clamp and limit the battery columns 4 to prevent the battery columns 4 from shaking.

[0060] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various 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 the upper and lower directions; There are multiple battery heat dissipation components (3), the battery protection components (3) are evenly installed inside the battery frame (1), each group of positioning brackets (2) is used to press 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).

2. The lithium battery pack structure with high heat dissipation efficiency according to claim 1, characterized in that: 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).

3. The lithium battery pack structure with high heat dissipation efficiency according to claim 2, 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).

4. The lithium battery pack structure with high heat dissipation efficiency according to claim 3, 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).

5. The lithium battery pack structure with high heat dissipation efficiency according to claim 4, 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.

6. The lithium battery pack structure with high heat dissipation efficiency according to claim 5, 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).

7. The lithium battery pack structure with high heat dissipation efficiency according to claim 6, 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 (303). The gas inside the airflow channel (301) enters the heat dissipation channel (303) through the heat dissipation nozzles (302), and the heat dissipation channels (303) on adjacent cooling elements (334) correspond to each other and are connected.

8. 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).

9. The lithium battery pack structure with high heat dissipation efficiency according to claim 8, 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).

10. The lithium battery pack structure with high heat dissipation efficiency according to claim 2, 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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