Cylindrical lithium battery module with heat dissipation channels

Abstract

The application discloses a cylindrical lithium battery module with a heat dissipation channel, which comprises a bottom shell, a lithium battery module and a top cover, two connecting strips are fixedly arranged on the two sides of the bottom shell, U-shaped clamping pieces are fixedly arranged on the top cover and are clamped and connected with the four connecting strips respectively, an outer sleeve shell is sleeved at the bottom of the bottom shell, a fan is fixedly installed at the center of the bottom of a cross-shaped reinforcing plate, and a cross-shaped heat dissipation channel is fixedly arranged in the bottom shell. The cylindrical lithium battery module with the heat dissipation channel comprises the bottom shell, the top cover, four lithium battery modules and the outer sleeve shell, the cross-shaped heat dissipation channel is arranged in the bottom shell, a complete heat dissipation channel is constructed through the cross-shaped heat dissipation channel, a temperature control switch senses the temperature inside the bottom shell, the fan drives airflow to flow, the four lithium battery modules are cooled through the airflow flow, the airflow passes through each lithium battery and is uniformly distributed, the heat dissipation effect is good, and the service life of the cylindrical lithium battery module is improved.

Description

[Technical Field]

[0001] This invention relates to the field of lithium battery technology, and in particular to a cylindrical lithium battery module with a heat dissipation channel. [Background Technology]

[0002] With social development and technological advancements, electric vehicles have gained widespread acceptance due to their energy-saving and environmentally friendly characteristics. Compared to traditional gasoline vehicles, electric vehicles are zero-emission, not only replacing petroleum with electricity and reducing emissions of greenhouse gases and other air pollutants, but also allowing their lithium batteries to be reused in energy storage devices. As the energy source for electric vehicles, the power battery directly impacts the vehicle's power, reliability, safety, and economy, leading to increasingly stringent requirements for power batteries. Current power batteries are lithium battery modules, composed of multiple lithium battery cells. During the power supply process, these modules generate significant heat, raising the ambient temperature of the battery and reducing its lifespan. An existing patent, CN106299537A, discloses an autonomous heat dissipation device for automotive lithium batteries, including a heat sink. The heat sink has an air delivery channel within its inner cavity and an air outlet within its inner side cavity. A cooling device is fixedly installed on the left side of the heat sink. The cooling device includes a housing; a dust filter and a fan are fixedly installed in the upper inner cavity of the housing; a cooler is fixedly installed in the middle inner cavity of the housing; a copper heat sink is fixedly connected to the right side of the cooler; a heat conduction plate is fixedly connected to the right side of the copper heat sink; a heat sink fin is fixedly connected to the left side of the cooler; a cooling fan is located on the left side of the heat sink fin; air inlets are located on both the upper and lower sides of the cooling fan; and a cold air vent is located on the right side of the housing. However, this patent's heat dissipation structure uses too many components, requiring a large space and severely limiting the battery's application scenarios. Furthermore, its air delivery channel faces the entire lithium battery module, making it difficult to precisely deliver airflow to all lithium batteries for heat dissipation, resulting in uneven heat dissipation.

[0003] Therefore, it is necessary to provide a cylindrical lithium battery module with a heat dissipation channel to overcome the above-mentioned defects. [Summary of the Invention]

[0004] The purpose of this invention is to provide a cylindrical lithium battery module with a heat dissipation channel, which aims to improve the heat dissipation effect of current lithium battery modules, making heat dissipation more uniform and effective, thereby extending the service life of the lithium battery module.

[0005] To achieve the above objectives, the present invention provides a cylindrical lithium battery module with heat dissipation channels, comprising a bottom shell, lithium battery modules, and a top cover. Two connecting strips are fixedly disposed on both sides of the bottom shell. U-shaped clips are fixedly disposed on the top cover, each engaging with one of the four connecting strips. Four upper matrix ventilation slots are formed at the bottom of the top cover. An outer shell is fitted over the bottom of the bottom shell. A cross-shaped reinforcing plate is embedded on the outer side of the bottom shell. A fan is fixedly installed at the center of the bottom of the cross-shaped reinforcing plate. A cross-shaped heat dissipation channel is fixedly disposed inside the bottom shell. The four lithium battery modules are respectively disposed within four cavities separated by the cross-shaped heat dissipation channel inside the bottom shell. Lower matrix ventilation slots are formed at the bottom of each of the four cavities. A temperature control switch connected to the inside of the bottom shell is fixedly installed at the bottom of the top cover. The fan is electrically connected to the temperature control switch.

[0006] In a preferred embodiment, the cross-shaped heat dissipation channel includes a vertical ventilation square tube and four horizontal ventilation square tubes fixedly connected to the vertical ventilation square tube. The bottom end of the vertical ventilation square tube is connected to the air inlet of the fan, and the top end of the vertical ventilation square tube has an opening.

[0007] In a preferred embodiment, a square tube cover communicating with the opening is fixedly provided at the center of the bottom of the top cover, and the four upper matrix ventilation slots are all connected to the square tube cover. The four upper matrix ventilation slots are connected to the vertical ventilation square tube through the square tube cover, and the four lower matrix ventilation slots are connected to the four horizontal ventilation square tubes.

[0008] In a preferred embodiment, each of the four ends of the cross-shaped reinforcing plate is provided with an air inlet located on the four sides of the bottom shell, and the four air inlets are respectively connected to four horizontal ventilation square pipes.

[0009] In a preferred embodiment, the outer shell has grooves on all four sides, and the four grooves respectively fit into the four ends of the cross-shaped reinforcing plate. The bottom center of the outer shell has an air outlet that communicates with the air outlet of the fan.

[0010] In a preferred embodiment, the bottom of the inner wall of the outer shell is provided with a limiting groove that fits with the cross-shaped reinforcing plate and provides a spare air outlet channel. Two mounting grooves matching the connecting strip and the U-shaped clip are provided on both sides of the inner wall of the outer shell. Two mounting screw holes are provided on both sides of the outer shell. The four mounting screw holes are respectively connected to the four mounting grooves. A second screw is provided in each of the four mounting screw holes. The outer shell is fixedly connected to the four U-shaped clips by the four second screws.

[0011] In a preferred embodiment, each of the four lithium battery modules includes a base, a cover plate, two connecting pieces, an upper limit sleeve with good thermal conductivity, a lower limit sleeve with good thermal conductivity, and a plurality of cylindrical lithium batteries. Connecting seats are fixedly connected to both sides of the cover plate. First screws are provided at both ends of the two connecting pieces. The two ends of the two connecting pieces are fixedly connected to the two connecting seats and both sides of the base by the first screws. The upper limit sleeve and the lower limit sleeve are combined to hold and fix the plurality of cylindrical lithium batteries, and the upper limit sleeve, the lower limit sleeve, and the plurality of cylindrical lithium batteries are fixed between the base and the cover plate.

[0012] In a preferred embodiment, both the upper limit sleeve and the lower limit sleeve include a partition and a battery sleeve. The partition is disposed between the two battery sleeves. The battery sleeve has a plurality of battery holes. A diamond-shaped cavity is formed in the middle of the partition. A semi-diamond-shaped cavity is formed at one end of the partition. The semi-diamond-shaped cavity on the upper limit sleeve and the semi-diamond-shaped cavity on the lower limit sleeve form a complete diamond.

[0013] In a preferred embodiment, a plurality of semi-circular heat dissipation grooves are provided on both sides of the separator and both sides of the battery sleeve, and the semi-circular heat dissipation grooves on the separator and the connected battery sleeve form a circular heat dissipation hole.

[0014] In a preferred embodiment, the bottom of the base and the top of the cover plate are provided with a plurality of heat dissipation holes. The circular heat dissipation holes on the upper limit sleeve and the circular heat dissipation holes on the lower limit sleeve form a plurality of heat dissipation channels. The two ends of the plurality of heat dissipation channels are respectively connected to the heat dissipation holes on the base and the heat dissipation holes on the cover plate.

[0015] In a preferred embodiment, the heat dissipation vent on the base is connected to the lower matrix ventilation slot, and the heat dissipation vent on the cover is connected to the upper matrix ventilation slot.

[0016] The present invention provides a cylindrical lithium battery module with a heat dissipation channel. The cylindrical lithium battery module includes a bottom shell, a top cover, four lithium battery modules, and an outer shell. A cross-shaped heat dissipation channel is set inside the bottom shell. A temperature control switch senses the internal temperature of the bottom shell. When the temperature reaches a preset threshold, the circuit is connected, the fan is powered on, and the fan drives the airflow. The cross-shaped heat dissipation channel receives air through four horizontal venting square pipes, and after passing through the four lithium battery modules, it exits through a vertical venting square pipe, forming a complete heat dissipation channel. The airflow dissipates heat from the four lithium battery modules. The airflow passes through each lithium battery, is evenly distributed, and has a good heat dissipation effect, which helps to improve the service life of the cylindrical lithium battery module. [Attached Image Description]

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An exploded view of the cylindrical lithium battery module with heat dissipation channels provided by the present invention;

[0019] Figure 2 for Figure 1 Exploded view of the lithium battery module shown;

[0020] Figure 3 for Figure 1 A 3D view of the lithium battery module shown.

[0021] Figure 4 for Figure 3 The diagram shows the upper limit switch and the lower limit switch.

[0022] Figure 5 for Figure 3 The diagram shown is an expanded view of the upper limit unit set.

[0023] Figure 6 for Figure 1 A three-dimensional schematic diagram of the bottom shell from another angle;

[0024] Figure 7 for Figure 1 A three-dimensional schematic diagram of the bottom shell from another angle, with the cross-shaped heat dissipation channel hidden.

[0025] Figure 8 for Figure 1 A three-dimensional schematic diagram of the outer shell from another angle.

[0026] The diagram is labeled as follows: 1. Lithium battery module; 101. Base; 102. Cover plate; 103. Upper limit sleeve; 1031. Separator; 1032. Battery sleeve; 1033. Diamond-shaped cavity; 1034. Semi-diamond-shaped cavity; 1035. Battery hole; 1036. Semi-circular heat dissipation groove; 104. Lower limit sleeve; 105. Cylindrical lithium battery; 106. Connecting piece; 107. Connecting seat; 108. First screw; 109. 1. Hot air inlet; 2. Bottom shell; 3. Top cover; 4. Outer shell; 5. Air outlet; 6. Cross-shaped reinforcing plate; 7. Fan; 8. Square tube cover; 9. Temperature control switch; 10. Upper matrix ventilation slot; 11. U-shaped clip; 12. Air inlet; 13. Connecting strip; 14. Lower matrix ventilation slot; 15. Cross-shaped heat dissipation channel; 16. Opening; 17. Groove; 18. Mounting slot; 19. Limiting slot; 20. Mounting screw hole; 21. Second screw.

Detailed Implementation Methods

[0027] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the invention and are not intended to limit the invention.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] In an embodiment of the present invention, a cylindrical lithium battery module with a heat dissipation channel is provided. The cylindrical lithium battery module includes a bottom shell 2, a top cover 3, four lithium battery modules 1, and an outer shell 4. The four lithium battery modules 1 are placed inside the bottom shell 2 and separated by a cross-shaped heat dissipation channel 15. The top cover 3 seals the entrance at the top of the bottom shell 2, and the outer shell 4 covers the outside of the bottom shell 2 for protection. A temperature control switch 9 senses the internal temperature of the bottom shell 2. When the temperature reaches a preset threshold, the circuit is connected, and the fan 7 is powered on. The fan 7 drives airflow, and the cross-shaped heat dissipation channel 15 receives air through four horizontal ventilation square pipes, passes through the four lithium battery modules 1, and exits through the vertical ventilation square pipes. The airflow dissipates heat from the four lithium battery modules 1. The internal circuit of the cylindrical lithium battery module and the temperature control switch 9 are connected to an external power supply or to the power supply circuit of the cylindrical lithium battery module itself. The present invention does not limit this.

[0031] like Figure 1As shown, two connecting strips 13 are fixedly installed on both sides of the bottom shell 2. U-shaped clips 11, which engage with the four connecting strips 13, are fixedly installed on the top cover 3. An outer shell 4 is fitted onto the bottom of the bottom shell 2. Two mounting grooves 18, matching the connecting strips 13 and U-shaped clips 11, are opened on both sides of the inner wall of the outer shell 4. Two mounting screw holes 20 are opened on both sides of the outer shell 4. The four mounting screw holes 20 communicate with the four mounting grooves 18, and each of the four mounting screw holes 20 contains a second screw 21. The outer shell 4 is secured by the four second screws. 21 is fixedly connected to four U-shaped clips 11. The four lithium battery modules 1 are respectively set in four receiving cavities separated by cross-shaped heat dissipation channels 15 inside the bottom shell 2. The four lithium battery modules 1 are installed into the bottom shell 2, and the outer shell 4 is installed into the bottom shell 2. The connecting strip 13 is inserted into the mounting groove 18 to limit and fix the bottom shell 2. The top cover 3 is covered, and the connecting strip 13 on the bottom shell 2 is inserted into the U-shaped clips 11 on the top cover 3. The U-shaped clips 11 are engaged with the mounting groove 18, and then screwed into the mounting screw hole 20. The outer shell 4 is fixedly connected to the top cover 3, and the installation is completed.

[0032] like Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, a cross-shaped reinforcing plate 6 is embedded on the outer side of the bottom shell 2, which strengthens the structural strength of the bottom shell 2. Four upper matrix ventilation slots 10 are opened at the bottom of the top cover 3, and lower matrix ventilation slots 14 are opened at the bottom of each of the four receiving cavities. A limiting groove 19, which fits with the cross-shaped reinforcing plate 6 and has a spare air outlet channel, is opened at the bottom of the inner wall of the outer shell 4. A fan 7 is fixedly installed at the center of the bottom of the cross-shaped reinforcing plate 6. A cross-shaped heat dissipation channel 15 is fixedly installed inside the bottom shell 2. The cross-shaped heat dissipation channel 15 includes a vertical ventilation square tube and four horizontal ventilation square tubes fixedly connected to the vertical ventilation square tube. The vertical ventilation square tube is not connected to the four horizontal ventilation square tubes. The bottom end of the vertical ventilation square tube is connected to the air inlet of the fan 7, and an opening 16 is opened at the top end of the vertical ventilation square tube. A square tube cover 8, which communicates with the opening 16, is fixedly installed at the center of the bottom of the top cover 3. The four upper matrix ventilation slots 10 are all connected to the square tube cover 8. The four upper matrix ventilation slots 10 are connected to the vertical ventilation square tube through the square tube cover 8. The four lower matrix ventilation slots 14 are connected to the four horizontal ventilation square tubes. The four ends of the cross-shaped reinforcing plate 6 are provided with air inlets 12 located on the four sides of the bottom shell 2. The four air inlets 12 are connected to the four horizontal ventilation square tubes. The four sides of the outer shell 4 are provided with grooves 17. The four grooves 17 fit into the four ends of the cross-shaped reinforcing plate 6. The center of the bottom of the outer shell 4 is provided with an air outlet 5 that communicates with the air outlet of the fan 7. A temperature control switch 9 connected to the inside of the bottom shell 2 is fixedly installed at the bottom of the top cover 3. The fan 7 is electrically connected to the temperature control switch 9. Temperature control switch 9 senses the internal temperature of bottom shell 2. When the temperature reaches the preset temperature value, temperature control switch 9 controls fan 7 to start working. Generally, this threshold is 90 degrees Celsius. Fan 7 drives airflow. Outside air enters the four horizontal ventilation tubes of cross-shaped heat dissipation channel 15 through the air inlets 12 on the four sides of bottom shell 2. It then enters the four lower matrix ventilation slots 14 through the four horizontal ventilation tubes. The airflow passes through the four lithium battery modules 1 and enters the four upper matrix ventilation slots 10. It then enters the vertical ventilation tubes of cross-shaped heat dissipation channel 15 through the four upper matrix ventilation slots 10. After passing through the vertical ventilation tubes, it is discharged through the air outlet 5 by fan 7.

[0033] Furthermore, when the air outlet 5 is blocked, the exhaust air is discharged from the four sides of the outer casing 4 through the spare air outlet channel in the limiting groove 19.

[0034] Furthermore, when the temperature drops to a preset threshold, the temperature control switch 9 controls the fan 7 to stop working. This threshold is typically 60 degrees Celsius.

[0035] like Figures 1-5As shown, each of the four lithium battery modules 1 includes a base 101, a cover plate 102, two connecting pieces 106, an upper limit sleeve 103, a lower limit sleeve 104, and several cylindrical lithium batteries 105. Connecting seats 107 are fixedly connected to both sides of the cover plate 102. First screws 108 are provided at both ends of the two connecting pieces 106. The two ends of the two connecting pieces 106 are fixedly connected to the two connecting seats 107 and both sides of the base 101 via the first screws 108. The upper limit sleeve... The upper limit sleeve 103 and the lower limit sleeve 104 are combined to hold and fix several cylindrical lithium batteries 105. The upper limit sleeve 103, the lower limit sleeve 104, and the several cylindrical lithium batteries 105 are fixed between the base 101 and the cover plate 102. Both the upper limit sleeve 103 and the lower limit sleeve 104 include a partition 1031 and a battery sleeve 1032. The partition 1031 is disposed between two sets of battery sleeves 1032. Several battery holes 1035 are opened on the battery sleeves 1032. The upper limit sleeve 103 and the lower limit sleeve 104 are combined and the cylindrical lithium batteries 105 are fixed by holding them through the battery holes 1035. After assembly, they are placed in the base 101, and then the cover plate 102 is covered. Then, the connecting piece 106 is fixedly installed between the connecting seat 107 on the base 101 and the cover plate 102 by the first screw 108, thus completing the assembly of the lithium battery module 1.

[0036] like Figures 1-5As shown, a rhomboid cavity 1033 is formed in the middle of the partition 1031, and a semi-rhomboid cavity 1034 is formed at one end of the partition 1031. The semi-rhomboid cavity 1034 on the upper limit sleeve 103 and the semi-rhomboid cavity 1034 on the lower limit sleeve 104 form a complete rhombus. Several semi-circular heat dissipation grooves 1036 are formed on both sides of the partition 1031 and both sides of the battery sleeve 1032. The semi-circular heat dissipation grooves 1036 on the partition 1031 and the semi-circular heat dissipation grooves 1036 on the connected battery sleeve 1032 are grouped together. The base 101 and the cover 102 each have several heat dissipation vents 109, forming circular heat dissipation holes. The circular heat dissipation holes on the upper limit sleeve 103 and the lower limit sleeve 104 form several heat dissipation channels. The two ends of these channels connect to the heat dissipation vents 109 on the base 101 and the cover 102, respectively. The heat dissipation vents 109 on the base 101 connect to the lower matrix ventilation slot 14, and the heat dissipation vents 109 on the cover 102 connect to the upper matrix ventilation slot 10. Airflow passes through these channels, carrying away heat. The airflow is evenly distributed, passing near each cylindrical lithium battery 105 at equal distances. The rhomboid cavity 1033 reduces the weight and production cost of the upper limit sleeve 103 and the lower limit sleeve 104. Several heat dissipation channels form a matrix heat dissipation channel, which is evenly distributed within the lithium battery module 1. The two ends of the matrix heat dissipation channel are connected to the upper matrix ventilation slot 10 and the lower matrix ventilation slot 14, respectively.

[0037] In summary, the cylindrical lithium battery module with heat dissipation channels provided by this invention uses a temperature control switch 9 to sense the internal temperature of the bottom shell 2. When the temperature reaches a preset threshold, the temperature control switch 9 controls the fan 7 to start working. Generally, this threshold is 90 degrees Celsius. The fan 7 drives airflow, and outside air enters the four horizontal ventilation tubes of the cross-shaped heat dissipation channel 15 through the air inlets 12 on the four sides of the bottom shell 2. The air then enters the four lower matrix ventilation slots 14 through the four horizontal ventilation tubes. The airflow passes through the circular heat dissipation holes on the upper limit sleeve 103 and the circular heat dissipation holes on the lower limit sleeve 104 to form several heat dissipation channels, which then enter the four upper matrix ventilation slots 10. The airflow carries away heat, achieving the heat dissipation function. The air then enters the vertical ventilation tube of the cross-shaped heat dissipation channel 15 through the four upper matrix ventilation slots 10, and is discharged from the air outlet 5 by the fan 7 after passing through the vertical ventilation tube. Furthermore, when the air outlet 5 is blocked, the discharged air is discharged from the four sides of the outer shell 4 through the spare air outlet channel in the limit slot 19. Furthermore, when the temperature drops to a preset threshold, the temperature control switch 9 controls the fan 7 to stop working. This threshold is typically 60 degrees Celsius.

[0038] The present invention is not limited to the description in the specification and embodiments, and thus other advantages and modifications can be readily realized by those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices and illustrated examples shown and described herein without departing from the spirit and scope of the general concept as defined by the claims and their equivalents.

Claims

1. A cylindrical lithium battery module with a heat dissipation channel, characterized in that, Includes a bottom shell (2), a lithium battery module (1), and a top cover (3). Two connecting strips (13) are fixedly installed on both sides of the bottom shell (2). The top cover (3) is fixedly equipped with U-shaped clips (11) that engage with the four connecting strips (13). The bottom of the top cover (3) has four upper matrix ventilation slots (10). An outer shell (4) is fitted over the bottom of the bottom shell (2). A cross-shaped reinforcing plate (6) is embedded on the outer side of the bottom shell (2). 6) A fan (7) is fixedly installed at the center of the bottom. A cross-shaped heat dissipation channel (15) is fixedly installed inside the bottom shell (2). The four lithium battery modules (1) are respectively installed in the four accommodating cavities separated by the cross-shaped heat dissipation channel (15) inside the bottom shell (2). A lower matrix ventilation groove (14) is opened at the bottom of each of the four accommodating cavities. A temperature control switch (9) connected to the inside of the bottom shell (2) is fixedly installed at the bottom of the top cover (3). The fan (7) is electrically connected to the temperature control switch (9). The cross-shaped heat dissipation channel (15) includes a vertical ventilation square tube and four horizontal ventilation square tubes with fixed side lengths connected to the vertical ventilation square tube. The bottom end of the vertical ventilation square tube is connected to the air inlet of the fan (7), and the top end of the vertical ventilation square tube is provided with an opening (16). The top cover (3) is fixedly provided with a square tube cover (8) that communicates with the opening (16) at the center of the bottom. The four upper matrix ventilation slots (10) are all connected to the square tube cover (8). The four upper matrix ventilation slots (10) are connected to the vertical ventilation square tube through the square tube cover (8). The four lower matrix ventilation slots (14) are connected to the four horizontal ventilation square tubes. The four ends of the cross-shaped reinforcing plate (6) are provided with air inlets (12) located on the four sides of the bottom shell (2), and the four air inlets (12) are respectively connected to four horizontal ventilation square pipes. The outer shell (4) has grooves (17) on all four sides, and the four grooves (17) respectively fit into the four ends of the cross-shaped reinforcing plate (6). The bottom center of the outer shell (4) has an air outlet (5) that communicates with the air outlet of the fan (7).

2. The cylindrical lithium battery module with heat dissipation channels as described in claim 1, characterized in that, The bottom of the inner wall of the outer shell (4) is provided with a limiting groove (19) that fits with the cross-shaped reinforcing plate (6) and has a spare air outlet channel. Two mounting grooves (18) matching the connecting strip (13) and the U-shaped clip (11) are provided on both sides of the inner wall of the outer shell (4). Two mounting screw holes (20) are provided on both sides of the outer shell (4). The four mounting screw holes (20) are respectively connected to the four mounting grooves (18). A second screw (21) is provided in each of the four mounting screw holes (20). The outer shell (4) is fixedly connected to the four U-shaped clips (11) by the four second screws (21).

3. The cylindrical lithium battery module with heat dissipation channels as described in claim 1, characterized in that, Each of the four lithium battery modules (1) includes a base (101), a cover plate (102), two connecting pieces (106), an upper limit sleeve (103) with good thermal conductivity, a lower limit sleeve (104) with good thermal conductivity, and several cylindrical lithium batteries (105). Both sides of the cover plate (102) are fixedly connected to connecting seats (107). Both ends of the two connecting pieces (106) are provided with first screws (108). The two ends of the two connecting pieces (106) are fixedly connected to the two connecting seats (107) and the two sides of the base (101) by the first screws (108). The upper limit sleeve (103) and the lower limit sleeve (104) are combined to clamp and fix several cylindrical lithium batteries (105). The upper limit sleeve (103), the lower limit sleeve (104), and several cylindrical lithium batteries (105) are fixed between the base (101) and the cover plate (102).

4. The cylindrical lithium battery module with heat dissipation channels as described in claim 3, characterized in that, Both the upper limit sleeve (103) and the lower limit sleeve (104) include a partition (1031) and a battery sleeve (1032). The partition (1031) is disposed between the two battery sleeve (1032) groups. The battery sleeve (1032) has a plurality of battery holes (1035). A diamond-shaped cavity (1033) is formed in the middle of the partition (1031), and a semi-diamond-shaped cavity (1034) is formed at one end of the partition (1031). The semi-rhomboid cavity (1034) on the limiting sleeve (103) and the semi-rhomboid cavity (1034) on the lower limiting sleeve (104) form a complete rhombus. Several semi-circular heat dissipation grooves (1036) are provided on both sides of the partition (1031) and both sides of the battery sleeve (1032). The semi-circular heat dissipation grooves (1036) on the partition (1031) and the semi-circular heat dissipation grooves (1036) on the connected battery sleeve (1032) form a circular heat dissipation hole.

5. The cylindrical lithium battery module with heat dissipation channels as described in claim 4, characterized in that, The bottom of the base (101) and the top of the cover plate (102) are provided with a number of heat dissipation holes (109). The circular heat dissipation holes on the upper limit sleeve (103) and the circular heat dissipation holes on the lower limit sleeve (104) form a number of heat dissipation channels. The two ends of the number of heat dissipation channels are respectively connected to the heat dissipation holes (109) on the base (101) and the heat dissipation holes (109) on the cover plate (102).

6. The cylindrical lithium battery module with heat dissipation channels as described in claim 5, characterized in that, The heat dissipation vent (109) on the base (101) is connected to the lower matrix ventilation slot (14), and the heat dissipation vent (109) on the cover plate (102) is connected to the upper matrix ventilation slot (10).

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