Novel lithium battery pack

Abstract

The utility model relates to a novel lithium battery pack, which comprises a first support, a second support and a plurality of lithium battery monomers, the first support is detachably connected with the second support, the first support is provided with a first cavity, the first cavity is provided with a plurality of first mounting cavities arranged in a matrix, and the second support is provided with a plurality of second mounting cavities arranged in a matrix. The first support is provided with a first cavity, the second support is provided with a plurality of first mounting cavities arranged in a matrix mode, first isolation columns are arranged among every four first mounting cavities arranged in a matrix mode, the second support is provided with a second cavity, the second cavity is provided with a plurality of second mounting cavities arranged in a matrix mode, and second isolation columns are arranged among every four second mounting cavities arranged in a matrix mode. One section of each lithium battery monomer is inserted into the first mounting cavity, the other section of each lithium battery monomer is inserted into the second mounting cavity, the first bracket is provided with at least one first heat dissipation window communicated with the first cavity, and the second bracket is provided with at least one second heat dissipation window communicated with the second cavity. The lithium battery pack is convenient to disassemble and assemble and easy to maintain by designing the first support and the second support which are detachable, the direct contact between the lithium battery monomers is reduced by designing the first isolation column and the second isolation column, the influence of vibration and impact on the batteries is reduced, and the service life of the lithium battery pack is prolonged. And the first heat dissipation window and the second heat dissipation window are designed, so that heat generated in the lithium battery pack can be discharged in time, and the lithium battery pack is kept at a proper working temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and in particular to a novel lithium battery pack. Background Art

[0002] In the current field of battery technology, lithium batteries are widely used in various fields such as electric vehicles, portable electronic devices, and energy storage systems due to their high energy density, long cycle life, and environmentally friendly properties. However, with the continuous expansion of application areas and the increasing performance requirements, the design of traditional lithium battery packs faces many challenges.

[0003] First, traditional lithium-ion battery packs often use a monolithic package. This design requires disassembly for maintenance, which is not only complex but also costly. If a single cell in the pack fails, the entire pack must be replaced, resulting in a waste of resources.

[0004] Secondly, lithium batteries generate a lot of heat during operation. If it cannot be dissipated promptly and effectively, the battery temperature will rise, which will affect the battery performance and life, and even cause safety problems.

[0005] In addition, in application scenarios such as electric vehicles, battery packs need to withstand vibrations and impacts from the vehicle during driving. If the structural design is unreasonable, it will easily lead to relative movement or damage between battery cells, thereby affecting the performance and safety of the entire battery pack. Utility Model Content

[0006] The purpose of the utility model is to provide a new type of lithium battery pack, which is easy to disassemble and maintain, while reducing the impact of vibration and impact on the battery, and can promptly discharge the heat generated inside the battery pack so that the battery pack maintains a suitable operating temperature.

[0007] A new type of lithium battery pack includes a first bracket, a second bracket and several lithium battery cells, the first bracket and the second bracket are detachably connected, the first bracket is provided with a first cavity, the first cavity has several first mounting cavities arranged in a matrix, and a first isolation column is provided between every four first mounting cavities arranged in the matrix, the second bracket is provided with a second cavity, the second cavity has several second mounting cavities arranged in a matrix, and a second isolation column is provided between every four second mounting cavities arranged in the matrix, one section of the lithium battery cell is inserted into the first mounting cavity, and the other section is inserted into the second mounting cavity, the first bracket is provided with at least one first heat dissipation window connected to the first cavity, and the second bracket is provided with at least one second heat dissipation window connected to the second cavity.

[0008] In the above technical solution, the detachable connection between the first bracket and the second bracket makes the lithium battery pack more flexible and convenient during assembly and disassembly, and facilitates the replacement or maintenance of damaged lithium battery cells. When one of the lithium battery cells is damaged, there is no need to replace the entire lithium battery pack, only the part that needs to be replaced needs to be replaced, which reduces resource waste and cost expenditure. The matrix arrangement of the first mounting cavity and the second mounting cavity enables the lithium battery cells to be arranged closely, thereby improving the overall energy density of the lithium battery pack. The provision of a first isolation column between every four first mounting cavities and a second isolation column between every four second mounting cavities reduces direct contact between the lithium battery cells and reduces the impact of vibration and impact on the battery. The design of the first heat dissipation window and the second heat dissipation window allows the interior of the lithium battery pack to maintain air circulation, which can discharge the heat generated inside the lithium battery pack in time, so that the lithium battery pack maintains a suitable operating temperature. By reducing the internal temperature of the lithium battery pack, the aging rate of the battery caused by high temperature is reduced, thereby extending the service life of the battery. The utility model makes the lithium battery pack easy to disassemble and assemble and easy to maintain by designing the detachable first bracket and the second bracket. The design of the first isolation column and the second isolation column reduces the direct contact between the lithium battery cells, reducing the impact of vibration and impact on the battery. The design of the first heat dissipation window and the second heat dissipation window can discharge the heat generated inside the lithium battery pack in time, so that the lithium battery pack maintains a suitable operating temperature.

[0009] Furthermore, a side surface of the first bracket connected to the second bracket is provided with at least one first mounting portion, a side surface of the second bracket connected to the first bracket is provided with at least one second mounting portion, and the first bracket and the second bracket are connected through the first mounting portion and the second mounting portion.

[0010] In the above technical solution, the first and second mounting portions cooperate to form a secure mechanical connection between the first and second brackets, ensuring the stability and reliability of the lithium battery pack during use. When maintenance or replacement of components in the lithium battery pack is required, the first and second brackets can be easily removed by simply loosening the fasteners between the first and second mounting portions, without destroying the entire structure.

[0011] Furthermore, the first mounting portion is provided with a first mounting hole, and the second mounting portion is provided with a first through-hole opposite to the first mounting hole.

[0012] In the above technical solution, a fastener (such as a bolt, screw, etc.) is passed through the first mounting hole and fixed in the first through-hole, thereby achieving a stable connection between the first bracket and the second bracket, thereby enhancing the overall structural strength of the lithium battery pack.

[0013] Furthermore, the first isolation column extends from the bottom of the first cavity to the top of the first cavity, and the second isolation column extends from the bottom of the second cavity to the top of the second cavity.

[0014] In the above technical solution, the first isolation column and the second isolation column extend from the bottom to the top of the first cavity and the second cavity respectively, providing all-round support for the entire lithium battery cell, enhancing the structural strength of the lithium battery pack, and enabling it to withstand greater external forces and vibrations.

[0015] Furthermore, the first isolation column is provided with a second mounting hole extending through the first isolation column along its axial direction, and the second isolation column is provided with a second through-hole extending through the first isolation column along its axial direction, and the second mounting hole is opposite to the second through-hole.

[0016] In the above technical solution, the second mounting hole and the second through-hole can be used as reference points for installing fasteners (such as bolts, pins, etc.). The connection of the fasteners can strengthen the structural stability between the first isolation column and the second isolation column, thereby improving the structural stability of the entire lithium battery pack.

[0017] Furthermore, the bottom of the first mounting cavity is provided with a first through hole passing through the first bracket, the first bracket is provided with a first mounting groove adjacent to the first through hole, the bottom of the second mounting cavity is provided with a second through hole passing through the second bracket, the second bracket is provided with a second mounting groove adjacent to the second through hole, the first mounting groove and the second mounting groove are respectively provided with buses, the bus provided in the first mounting groove at least partially extends to the first through hole, and the bus provided in the second mounting groove at least partially extends to the second through hole.

[0018] In the above technical solution, the busbar partially extends into the first through hole and the second through hole, so that the lithium battery cell can directly contact the busbar, thereby achieving efficient electrical connection.

[0019] Furthermore, a first insulating sheet and a plurality of first fasteners are provided on a side of the first bracket facing away from the second bracket, and the first insulating sheet is connected to the first bracket via the first fasteners.

[0020] In the above technical solution, the design of the first insulating sheet effectively isolates the first bracket from direct contact with any conductive components that may come into contact, thereby preventing the risk of short circuits caused by accidental contact and improving the safety of the lithium-ion battery pack. The first insulating sheet is connected to the first bracket via a first fastener, ensuring its stability. If the lithium-ion battery pack is subjected to vibration or impact, the first fastener prevents the first insulating sheet from loosening or falling off, thereby maintaining the electrical connection and structural integrity of the lithium-ion battery pack.

[0021] Furthermore, a BMS module is provided on a side of the first insulating sheet facing away from the first bracket, and the BMS module is connected to the first bracket via the first fastener.

[0022] In the above technical solution, the BMS module can monitor the battery pack's voltage, current, temperature, and other parameters in real time and accurately manage the lithium-ion battery pack based on these parameters, helping to extend the battery pack's service life and improve the overall performance of the battery system. The BMS module is directly connected to the first bracket via the first fastener, ensuring its stability and reliability and reducing the risk of loosening or dislodging due to vibration or impact.

[0023] Furthermore, a second insulating sheet and a plurality of second fasteners are provided on a side of the second bracket facing away from the first bracket, and the second insulating sheet is connected to the second bracket via the second fasteners.

[0024] In the above technical solution, similar to the design of the first bracket, the second insulating sheet on the second bracket also provides electrical isolation, preventing the risk of short circuits between the second bracket and other conductive components that may come into contact, thereby improving the safety of the lithium battery pack. The second insulating sheet is connected to the second bracket via a second fastener, ensuring its stability. When the lithium battery pack is subjected to vibration or impact, the second fastener can prevent the second insulating sheet from loosening or falling off, thereby maintaining the electrical connection and structural integrity of the lithium battery pack.

[0025] Furthermore, the inner side walls of the first bracket and the second bracket are formed into a plurality of outwardly convex arc-shaped surfaces, and the arc-shaped surfaces are adapted to the surfaces of the lithium battery cells.

[0026] In the above technical solution, the curved surface design enables the first bracket and the second bracket to better wrap and fix the lithium battery cell, improves the stability of the lithium battery cell in the first bracket and the second bracket, and helps prevent the lithium battery cell from being displaced or falling off during transportation, installation and use.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The design of the detachable first and second brackets makes the lithium battery pack more flexible and convenient during assembly and disassembly, and facilitates the replacement or maintenance of damaged lithium battery cells. If a lithium battery cell is damaged, there is no need to replace the entire lithium battery pack, only the part that needs to be replaced, reducing resource waste and cost expenditure.

[0029] 2. The design of the first and second isolation columns reduces direct contact between lithium battery cells and reduces the impact of vibration and impact on the battery.

[0030] 3. Design the first heat dissipation window and the second heat dissipation window to keep the inside of the lithium battery pack ventilated with external air, so as to discharge the heat generated inside the lithium battery pack in time and keep the lithium battery pack at a suitable operating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of a new lithium battery pack according to an embodiment of the present invention.

[0032] Figure 2 This is a schematic structural diagram of the first bracket according to an embodiment of the present utility model.

[0033] Figure 3 This is a schematic structural diagram of the second bracket according to an embodiment of the present utility model.

[0034] Figure 4 This is a schematic diagram of the partial structure of the first bracket according to an embodiment of the present utility model.

[0035] Figure 5 This is a schematic diagram of the partial structure of the second bracket according to an embodiment of the present utility model.

[0036] Figure 6 This is a three-dimensional view of the new lithium battery pack from another angle according to an embodiment of the present invention.

[0037] Figure 7 This is a schematic diagram of the exploded structure of a new lithium battery pack according to an embodiment of the present utility model.

[0038] Explanation of Figure Numbers

[0039] 1. First bracket; 101. First cavity; 1011. First mounting cavity; 102. First isolation column; 1021. Second mounting hole; 103. First heat dissipation window; 104. First mounting portion; 1041. First mounting hole; 105. First through hole; 106. First mounting slot; 107. First fastener;

[0040] 2. Second bracket; 201. Second cavity; 2011. Second mounting cavity; 202. Second isolation column; 2021. Second through-hole; 203. Second heat dissipation window; 204. Second mounting portion; 2041. First through-hole; 205. Second through-hole; 206. Second mounting slot; 207. Second fastener;

[0041] 3. Lithium battery cell; 4. Busbar; 5. First insulating sheet; 6. BMS module; 7. Second insulating sheet; 8. Arc surface. DETAILED DESCRIPTION

[0042] The following is a further detailed description of the novel lithium battery pack of the present invention, with reference to specific embodiments and accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0043] Please refer to Figures 1 to 3 In a preferred embodiment, the new lithium battery pack of the present invention includes a first bracket 1, a second bracket 2 and a plurality of lithium battery cells 3. The first bracket 1 and the second bracket 2 are detachably connected. The first bracket 1 is provided with a first cavity 101, and the first cavity 101 has a plurality of first mounting cavities 1011 arranged in a matrix. A first isolation column 102 is provided between every four first mounting cavities 101 arranged in the matrix. The second bracket 2 is provided with a second cavity 201, and the second cavity 201 has a plurality of second mounting cavities 2011 arranged in a matrix. A second isolation column 202 is provided between every four second mounting cavities 2011 arranged in the matrix. One section of the lithium battery cell 3 is inserted into the first mounting cavity 1011, and the other section is inserted into the second mounting cavity 2011. The first bracket 1 is provided with at least one first heat dissipation window 103 communicating with the first cavity 101, and the second bracket 2 is provided with at least one second heat dissipation window 203 communicating with the second cavity 201.

[0044] In practical applications, the removable connection between the first bracket 1 and the second bracket 2 makes the lithium battery pack more flexible and convenient during assembly and disassembly, facilitating the replacement or maintenance of damaged lithium battery cells 3. If a single lithium battery cell 3 is damaged, the entire battery pack need not be replaced; only the portion that needs to be replaced needs to be replaced, reducing resource waste and cost. The matrix arrangement of the first mounting cavities 1011 and the second mounting cavities 2011 allows for close arrangement of the lithium battery cells 3, improving the overall energy density of the lithium battery pack. The placement of first spacers 102 between every four first mounting cavities 1011 and second spacers 202 between every four second mounting cavities 2011 reduces direct contact between the lithium battery cells 3, thereby reducing the effects of vibration and impact on the battery. The design of the first and second heat dissipation windows 103 and 203 ensures air circulation within the lithium battery pack, allowing for the timely dissipation of heat generated within the pack, maintaining a suitable operating temperature. By lowering the internal temperature of the battery pack, the rate of battery aging caused by high temperatures is reduced, thereby extending the battery life. The utility model makes the lithium battery pack easy to disassemble and maintain by designing a detachable first bracket 1 and a second bracket 2. The design of the first isolation column 102 and the second isolation column 202 reduces direct contact between the lithium battery cells 3, reducing the impact of vibration and impact on the battery. The design of the first heat dissipation window 103 and the second heat dissipation window 203 can discharge the heat generated inside the lithium battery pack in a timely manner, so that the lithium battery pack maintains a suitable operating temperature.

[0045] Please refer to Figure 1 At least one first mounting portion 104 is provided on one side surface where the first bracket 1 is connected to the second bracket 2, and at least one second mounting portion 204 is provided on one side surface where the second bracket 2 is connected to the first bracket 1. The first bracket 1 and the second bracket 2 are connected via the first mounting portion 104 and the second mounting portion 204. Through the cooperation between the first mounting portion 104 and the second mounting portion 204, the first bracket 1 and the second bracket 2 can form a stable mechanical connection, ensuring the stability and reliability of the lithium battery pack during use. When it is necessary to maintain or replace components in the lithium battery pack, the first bracket 1 and the second bracket 2 can be easily disassembled by loosening the fixings between the first mounting portion 104 and the second mounting portion 204 without destroying the overall structure. Since the disassembly and replacement process is simple, maintenance costs and time costs can be reduced. It should be noted that the number and position of the first mounting portion 104 and the second mounting portion 204 can be adjusted and optimized according to actual needs to adapt to lithium battery packs of different specifications and capacities and different application scenarios.

[0046] Specifically, the first mounting portion 104 is provided with a first mounting hole 1041, and the second mounting portion 204 is provided with a first through-hole 2041 opposite the first mounting hole 1041. By inserting a fastener (such as a bolt or screw) through the first mounting hole 1041 and securing it in the first through-hole 2041, a secure connection is achieved between the first bracket 1 and the second bracket 2, thereby enhancing the overall structural strength of the lithium battery pack. During installation, the operator simply aligns the first mounting hole 1041 with the first through-hole 2041, inserts the fastener, and tightens it, eliminating the need for complex adjustment steps and greatly simplifying the installation process. When the lithium battery pack needs to be disassembled or maintained, the first bracket 1 and the second bracket 2 can be easily separated by simply loosening the fastener, without destroying the overall structure, thereby improving the convenience of maintenance.

[0047] It should be noted that the first isolation column 102 extends from the bottom of the first cavity 101 to the top of the first cavity 101, and the second isolation column 202 extends from the bottom of the second cavity 201 to the top of the second cavity 201. The first isolation column 102 and the second isolation column 202 extend from the bottom to the top of the first cavity 101 and the second cavity 201, respectively, providing all-round support for the entire lithium battery cell, enhancing the structural strength of the lithium battery pack and enabling it to withstand greater external forces and vibration. When the lithium battery pack is subjected to external impact or vibration, the first isolation column 102 and the second isolation column 202 can effectively disperse and absorb these forces, preventing the lithium battery cells from deforming or damaging. At the same time, the first isolation column 102 and the second isolation column 202 also serve as heat dissipation channels, allowing air to flow through the gaps between the lithium battery cells and the first isolation column 102 and the second isolation column 202, improving the thermal management efficiency of the lithium battery pack.

[0048] Furthermore, the first isolation column 102 is provided with a second mounting hole 1021 extending axially therethrough, and the second isolation column 202 is provided with a second through-hole 2021 extending axially therethrough, with the second mounting hole 1021 and the second through-hole 2021 being opposite each other. The second mounting hole 1021 and the second through-hole 2021 can serve as reference points for installing fasteners (such as bolts, pins, etc.). The connection of the fasteners can strengthen the structural stability between the first isolation column 102 and the second isolation column 202, thereby improving the structural stability of the entire lithium battery pack.

[0049] Please refer to Figures 2 to 5 The bottom of the first mounting cavity 1011 is provided with a first through-hole 105 extending through the first bracket 1. The first bracket 1 is provided with a first mounting groove 106 adjacent to the first through-hole 105. The bottom of the second mounting cavity 2011 is provided with a second through-hole 205 extending through the second bracket 2. The second bracket 2 is provided with a second mounting groove 206 adjacent to the second through-hole 205. Busbars 4 are respectively provided in the first mounting groove 106 and the second mounting groove 206. The busbar provided in the first mounting groove 106 at least partially extends into the first through-hole 105, and the busbar 4 provided in the second mounting groove 206 at least partially extends into the second through-hole 205. Busbars 4 enable balanced charging and discharging between the lithium battery cells 3, thereby improving the overall performance and cycle life of the lithium battery pack. Partially extending the busbars 4 into the first through-hole 105 and the second through-hole 205 allows the lithium battery cells 3 to directly contact the busbars 4, thereby achieving efficient electrical connection.

[0050] Please refer to Figure 1 A first insulating sheet 5 and several first fasteners 107 are provided on the side of the first bracket 1 facing away from the second bracket 2. The first insulating sheet 5 is connected to the first bracket 1 through the first fasteners 107. The design of the first insulating sheet 5 effectively isolates the first bracket 1 from direct contact with conductive parts that may come into contact, thereby preventing the risk of short circuit caused by accidental contact and improving the safety of the lithium battery pack. The first insulating sheet 5 is connected to the first bracket 1 by the first fasteners 107, ensuring the stability of the first insulating sheet 5. When the lithium battery pack is subjected to vibration or impact, the first fasteners 107 can prevent the first insulating sheet 5 from loosening or falling off, thereby maintaining the electrical connection and structural integrity of the lithium battery pack. When the first insulating sheet 5 needs to be maintained or replaced, the first insulating sheet 5 can be easily removed and reinstalled by simply loosening the first fasteners 107 without damaging other components or structures. The simplified disassembly and installation process reduces the difficulty and cost of maintenance and improves the maintainability of the lithium battery pack.

[0051] Meanwhile, a BMS module 6 is installed on the side of the first insulating sheet 5 facing away from the first bracket 1. This module is connected to the first bracket 1 via a first fastener 107. The BMS module 6 monitors the battery pack's voltage, current, temperature, and other parameters in real time, and accurately manages the lithium-ion battery pack based on these parameters, helping to extend the battery pack's service life and improve the overall performance of the battery system. Directly connecting the BMS module 6 to the first bracket 1 via the first fastener 107 ensures its stability and reliability, reducing the risk of loosening or dislodging due to vibration or impact.

[0052] Please refer to Figure 6 A second insulating sheet 7 and several second fasteners 207 are provided on the side of the second bracket 2 facing away from the first bracket 1. The second insulating sheet 7 is connected to the second bracket 2 via the second fasteners 207. Similar to the design of the first bracket 1, the second insulating sheet 7 on the second bracket 2 also provides electrical isolation, preventing the risk of short circuits between the second bracket 2 and other conductive parts that may come into contact, thereby improving the safety of the lithium battery pack. The second insulating sheet 7 is connected to the second bracket 2 by the second fasteners 207, ensuring the stability of the second insulating sheet 7. When the lithium battery pack is subjected to vibration or impact, the second fasteners 207 can prevent the second insulating sheet 7 from loosening or falling off, thereby maintaining the electrical connection and structural integrity of the lithium battery pack.

[0053] It should be noted that, in this embodiment, the first insulating sheet 5 and the second insulating sheet 7 are Mylar sheets, which have super strong insulation properties and can effectively prevent short circuits or interference between circuit layers, thereby improving the stability and reliability of the circuit.

[0054] Please refer to Figure 2 and Figure 3 The inner sidewalls of the first and second brackets 1 and 2 are formed with several outwardly convex curved surfaces 8, which conform to the surfaces of the lithium battery cells 3. These curved surfaces 8 enable the first and second brackets 1 and 2 to better wrap and secure the lithium battery cells 3, improving the stability of the lithium battery cells 3 within the first and second brackets 1 and 2, and helping to prevent the lithium battery cells from shifting or falling off during transportation, installation, and use.

[0055] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0057] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0058] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A new type of lithium battery pack, characterized in that: It includes a first bracket, a second bracket and several lithium battery cells, the first bracket and the second bracket are detachably connected, the first bracket is provided with a first cavity, the first cavity has several first mounting cavities arranged in a matrix, and a first isolation column is provided between every four first mounting cavities arranged in the matrix, the second bracket is provided with a second cavity, the second cavity has several second mounting cavities arranged in a matrix, and a second isolation column is provided between every four second mounting cavities arranged in the matrix, one section of the lithium battery cell is inserted in the first mounting cavity, and the other section is inserted in the second mounting cavity, the first bracket is provided with at least one first heat dissipation window connected to the first cavity, and the second bracket is provided with at least one second heat dissipation window connected to the second cavity.

2. The novel lithium battery pack according to claim 1, characterized in that: A surface on one side where the first bracket is connected to the second bracket is provided with at least one first mounting portion, a surface on one side where the second bracket is connected to the first bracket is provided with at least one second mounting portion, and the first bracket and the second bracket are connected via the first mounting portion and the second mounting portion.

3. The novel lithium battery pack according to claim 2, characterized in that: The first mounting portion is provided with a first mounting hole, and the second mounting portion is provided with a first through hole opposite to the first mounting hole.

4. The novel lithium battery pack according to claim 1, characterized in that: The first isolation column extends from the bottom of the first cavity to the top of the first cavity, and the second isolation column extends from the bottom of the second cavity to the top of the second cavity.

5. The novel lithium battery pack according to claim 1, characterized in that: The first isolation column is provided with a second mounting hole penetrating along its axial direction, the second isolation column is provided with a second through hole penetrating along its axial direction, and the second mounting hole is opposite to the second through hole.

6. The novel lithium battery pack according to claim 1, characterized in that: The bottom of the first mounting cavity is provided with a first through hole passing through the first bracket, the first bracket is provided with a first mounting groove adjacent to the first through hole, the bottom of the second mounting cavity is provided with a second through hole passing through the second bracket, the second bracket is provided with a second mounting groove adjacent to the second through hole, the first mounting groove and the second mounting groove are respectively provided with a bus, the bus provided in the first mounting groove at least partially extends to the first through hole, and the bus provided in the second mounting groove at least partially extends to the second through hole.

7. The novel lithium battery pack according to claim 1, characterized in that: A first insulating sheet and a plurality of first fasteners are provided on a side of the first bracket facing away from the second bracket, and the first insulating sheet is connected to the first bracket via the first fasteners.

8. The novel lithium battery pack according to claim 7, characterized in that: A BMS module is provided on a side of the first insulating sheet facing away from the first bracket, and the BMS module is connected to the first bracket via the first fastener.

9. The novel lithium battery pack according to claim 1, characterized in that: A second insulating sheet and a plurality of second fasteners are provided on a side of the second bracket facing away from the first bracket, and the second insulating sheet is connected to the second bracket via the second fasteners.

10. The novel lithium battery pack according to claim 1, characterized in that: The inner side walls of the first bracket and the second bracket are formed into a plurality of outwardly convex arc-shaped surfaces, and the arc-shaped surfaces are adapted to the surfaces of the lithium battery cells.

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