Lithium battery pack structure for two-wheeled electric vehicle

Abstract

The lithium battery pack structure comprises an outer frame, a partition plate is fixedly connected to the middle of the outer frame, a plurality of battery cells are arranged in the outer frame, heat conduction plates are arranged at the corners of the battery cells, and heat dissipation rods are fixedly connected to the side faces of the heat conduction plates. Compared with the prior art, the heat dissipation structure has the advantages that by arranging the heat conduction plates, the heat dissipation rods, the heat dissipation columns and the heat conduction rods and the like, heat generated when the battery core works is absorbed by the heat conduction plates at the corners of the battery core and is transmitted to the outer side of the outer frame through the heat dissipation rods, so that heat dissipation of the battery core is realized. And the heat dissipation columns gather heat on the inner side of the battery core through the heat conduction rods, so that the heat on the inner side of the battery core can be quickly dissipated to the outer side of the outer frame through the heat conduction rods and the heat dissipation columns. And heat around the battery core can be quickly dissipated to the outer side of the outer frame in cooperation with the heat dissipation rod. And heat of each part of the battery core can be quickly dissipated to the outer side of the outer frame, so that the heat dissipation effect is better and more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pack structure for a two-wheeled electric vehicle. Background Art

[0002] The service life of a lithium battery pack is limited, and the biggest influencing factor is the heat dissipation performance. Generally, the temperature range that a lithium battery can withstand is -40 to 60°C. If it is higher than 60°C, the chemical balance in the battery will be destroyed. The performance of the rechargeable battery material will degrade under high temperature, and the battery cycle life will be greatly reduced.

[0003] For example, a lithium battery pack and an electric vehicle with announcement number CN218351546U have outer walls that are in direct contact with the air to improve the heat dissipation efficiency of the chassis. A plurality of parallel air ducts are formed inside at least one side wall of the chassis, and both ends of the air ducts are connected to the outside world so that the heat generated by the battery cell module is transferred to the side wall of the chassis and brought out through the air ducts. The heat dissipation of the chassis is accelerated through the air ducts, the heat dissipation capacity of the lithium battery pack is enhanced, and the service life and performance of the lithium battery pack are improved. However, the battery core still dissipates heat outward through the chassis, and the contact area between the various parts of the battery core and the chassis is inconsistent, which leads to inconsistent heat dissipation effects of the various parts of the battery core. In addition, the heat transfer path is longer when the heat is dissipated outward through the chassis, and the heat dissipation effect needs to be improved. For this reason, a lithium battery pack structure for a two-wheeled electric vehicle is proposed for improvement. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] To this end, one purpose of the utility model is to provide a lithium battery pack structure for a two-wheeled electric vehicle to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a lithium battery pack structure for a two-wheeled electric vehicle, comprising an outer frame, a partition is fixedly connected to the middle of the outer frame, a plurality of battery cells are arranged in the outer frame, a heat conducting plate is arranged at the corner of the battery cell, a heat dissipation rod is fixedly connected to the side of the heat conducting plate, a heat dissipation column is arranged in the partition, and a heat conducting rod is arranged between the heat conducting plate and the heat dissipation column;

[0007] A plurality of input holes are provided on the inner wall of the outer frame, a plurality of output holes are provided on the outer wall of the outer frame, a connecting hole is provided between the input holes and the output holes, a breathable and waterproof membrane is provided in the input hole, and a filter is provided in the output hole.

[0008] Preferably, any of the above schemes is provided with a connection plate on the outer frame, and there are a plurality of partitions which are evenly arranged in the outer frame.

[0009] Preferably, any of the above solutions is that a plurality of the battery cells are evenly arranged between the partitions, and the heat conducting plate is formed by splicing three plates in different directions.

[0010] The above technical solution is adopted: the outer frame provides installation space for the battery core and also provides protection for the battery core to prevent damage caused by accidental contact with external objects. The connection plate provided on the outer frame is used to connect the battery pack and the electric vehicle together to power the electric vehicle. The partition divides the space inside the outer frame to block the heat transfer between the battery cores. The heat conductive plate supports the battery core at the corner of the battery core, collects the heat of the battery core, and transfers the heat to the outside of the outer frame through the heat dissipation rod, thereby achieving heat dissipation of the battery core.

[0011] Preferably, any of the above schemes has a plurality of heat dissipation rods which are evenly arranged on the side of the heat conducting plate, and the heat dissipation rods extend outside the outer frame.

[0012] Preferably, any of the above schemes has a plurality of heat dissipation columns which are evenly arranged in the partition, and the heat dissipation columns extend to the outside of the outer frame.

[0013] The above technical solution is adopted: a number of heat dissipation rods are evenly arranged on the heat conducting plate, so that the heat of the heat conducting plate can be quickly and evenly transmitted from the heat dissipation rods to the outside of the outer frame to ensure the heat dissipation speed. The heat dissipation column collects the heat inside the battery core through the heat conducting rods, so that the heat inside the battery core can also be quickly dissipated to the outside of the outer frame through the heat conducting rods and the heat dissipation column. With the heat dissipation rods, the heat around the battery core can be quickly dissipated to the outside of the outer frame.

[0014] Preferably, according to any of the above schemes, the input hole is arranged at the end of the connecting hole, and the output hole is arranged in the middle of the connecting hole.

[0015] Preferably, any of the above schemes is that the air-permeable and water-proof membrane is arranged at the inner end of the input hole, and the filter is arranged at the outer end of the output hole.

[0016] The above technical solution is adopted: the heat of the battery core can flow into the input hole, and flow into the output hole through the connection hole, and then flow from the output hole to the outside of the outer frame. The heat in the outer frame is directly dissipated to the outside of the outer frame through the input hole, the connection hole, and the output hole. The heat dissipation path is shorter and the heat dissipation speed is faster. A breathable and waterproof membrane is set at the inner end of the input hole to isolate external water and prevent external water from entering the outer frame and affecting the battery core. A filter is set at the outer end of the output hole to isolate external dust and impurities.

[0017] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0018] 1. The lithium battery pack structure for the two-wheeled electric vehicle is provided with heat-conducting plates, heat-dissipating rods, heat-dissipating columns and heat-conducting rods. The heat generated by the battery core is absorbed by the heat-conducting plates at the corners, and the heat is transferred to the outside of the outer frame through the heat-dissipating rods, thereby achieving heat dissipation of the battery core. The heat-dissipating columns collect the heat on the inside of the battery core through the heat-conducting rods, so that the heat on the inside of the battery core can also be quickly dissipated to the outside of the outer frame through the heat-conducting rods and heat-dissipating columns. With the heat-dissipating rods, the heat around the battery core can be quickly dissipated to the outside of the outer frame. The heat from all parts of the battery core can be quickly dissipated to the outside of the outer frame, and the heat dissipation effect is better and more uniform.

[0019] 2. The lithium battery pack structure for the two-wheeled electric vehicle is provided with input holes, output holes, connection holes, breathable and water-proof membranes, filters and other structures. The heat in the outer frame is directly dissipated to the outside of the outer frame through the input holes, connection holes and output holes. The heat dissipation path is short and the heat dissipation speed is faster. The breathable and water-proof membrane isolates the external water to prevent the external water from entering the outer frame and affecting the battery core. The filter isolates the external dust and impurities to ensure the cleanliness of the outer frame.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

[0024] Figure 3 For the utility model Figure 2 The structural diagram at A in the middle;

[0025] Figure 4 It is a structural schematic diagram of the heat conducting plate of the utility model.

[0026] In the figure: 1-outer frame, 2-partition, 3-battery core, 4-heat conducting plate, 5-heat dissipation rod, 6-heat dissipation column, 7-heat conducting rod, 8-input hole, 9-output hole, 10-connecting hole, 11-breathable and waterproof membrane, 12-filter screen, 13-connecting plate. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, the utility model comprises an outer frame 1, a partition 2 is fixedly connected to the middle of the outer frame 1, a plurality of battery cells 3 are arranged in the outer frame 1, a heat conducting plate 4 is arranged at the corner of the battery cell 3, a heat dissipation rod 5 is fixedly connected to the side of the heat conducting plate 4, a heat dissipation column 6 is arranged in the partition 2, and a heat conducting rod 7 is arranged between the heat conducting plate 4 and the heat dissipation column 6;

[0030] A plurality of input holes 8 are provided on the inner wall of the outer frame 1 , a plurality of output holes 9 are provided on the outer wall of the outer frame 1 , a connecting hole 10 is provided between the input holes 8 and the output holes 9 , a breathable and waterproof membrane 11 is provided in the input hole 8 , and a filter screen 12 is provided in the output hole 9 .

[0031] Embodiment 1: A connection plate 13 is provided on the outer frame 1, and there are several partitions 2 that are evenly arranged in the outer frame 1. Several battery cells 3 are evenly arranged between the partitions 2, and the heat conducting plate 4 is formed by splicing three plates in different directions. The outer frame 1 provides installation space for the battery cell 3, and also provides protection for the battery cell 3 to avoid damage caused by accidental contact with external objects. The connection plate 13 provided on the outer frame 1 is used to connect the battery pack and the electric vehicle together to power the electric vehicle. The partition 2 divides the space inside the outer frame 1 and isolates the heat transfer between the battery cells 3. The heat conducting plate 4 supports the battery cell 3 at the corners of the battery cell 3, collects the heat of the battery cell 3, and transfers the heat to the outside of the outer frame 1 through the heat dissipation rod 5, thereby achieving heat dissipation of the battery cell 3.

[0032] Embodiment 2: There are a plurality of heat dissipation rods 5 and they are evenly arranged on the side of the heat conducting plate 4, and the heat dissipation rods 5 extend outside the outer frame 1. There are a plurality of heat dissipation columns 6 and they are evenly arranged inside the partition 2, and the heat dissipation columns 6 extend outside the outer frame 1. A plurality of heat dissipation rods 5 are evenly arranged on the heat conducting plate 4, so that the heat of the heat conducting plate 4 can be quickly and evenly transmitted from the heat dissipation rods 5 to the outside of the outer frame 1, thereby ensuring the heat dissipation speed. The heat dissipation columns 6 collect the heat on the inner side of the battery core 3 through the heat conducting rods 7, so that the heat on the inner side of the battery core 3 can also be quickly dissipated to the outside of the outer frame 1 through the heat conducting rods 7 and the heat dissipation columns 6. In combination with the heat dissipation rods 5, the heat around the battery core 3 can be quickly dissipated to the outside of the outer frame 1.

[0033] Embodiment 3: The input hole 8 is arranged at the end of the connecting hole 10, and the output hole 9 is arranged in the middle of the connecting hole 10. The breathable and waterproof membrane 11 is arranged at the inner end of the input hole 8, and the filter 12 is arranged at the outer end of the output hole 9. The heat of the battery core 3 can flow into the input hole 8, and flow into the output hole 9 through the connecting hole 10, and then flow from the output hole 9 to the outside of the outer frame 1. The heat in the outer frame 1 is directly dissipated to the outside of the outer frame 1 through the input hole 8, the connecting hole 10, and the output hole 9. The heat dissipation path is shorter and the heat dissipation speed is faster. The breathable and waterproof membrane 11 is arranged at the inner end of the input hole 8 to isolate external water and prevent external water from entering the outer frame 1 and affecting the battery core 3. The filter 12 is arranged at the outer end of the output hole 9 to isolate external dust and impurities.

[0034] The working principle of the utility model is as follows:

[0035] S1. The heat generated by the battery core 3 is absorbed by the heat conducting plate 4 at the corner thereof, and is transferred to the outside of the outer frame 1 through the heat dissipation rod 5, thereby achieving heat dissipation of the battery core 3;

[0036] S2, the heat dissipation column 6 collects the heat inside the battery core 3 through the heat conducting rod 7, so that the heat inside the battery core 3 can also be quickly dissipated to the outside of the outer frame 1 through the heat conducting rod 7 and the heat dissipation column 6;

[0037] S3. The heat in the outer frame 1 is directly dissipated to the outside of the outer frame 1 through the input hole 8, the connection hole 10, and the output hole 9. The heat dissipation path is shorter and the heat dissipation speed is faster.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The lithium battery pack structure for the two-wheeled electric vehicle is provided with structures such as a heat conducting plate 4, a heat dissipation rod 5, a heat dissipation column 6 and a heat conducting rod 7. The heat generated by the battery core 3 is absorbed by the heat conducting plate 4 at the corner thereof, and the heat is transferred to the outside of the outer frame 1 through the heat dissipation rod 5, thereby achieving heat dissipation of the battery core 3. The heat dissipation column 6 collects the heat inside the battery core 3 through the heat conducting rod 7, so that the heat inside the battery core 3 can also be quickly dissipated to the outside of the outer frame 1 through the heat conducting rod 7 and the heat dissipation column 6. In combination with the heat dissipation rod 5, the heat around the battery core 3 can be quickly dissipated to the outside of the outer frame 1. The heat from all parts of the battery core 3 can be quickly dissipated to the outside of the outer frame 1, and the heat dissipation effect is better and more uniform.

[0040] 2. The lithium battery pack structure for the two-wheeled electric vehicle is provided with input holes 8, output holes 9, connection holes 10, breathable and water-proof membrane 11, filter screen 12 and other structures. The heat in the outer frame 1 is directly dissipated to the outside of the outer frame 1 through the input holes 8, connection holes 10, and output holes 9. The heat dissipation path is short and the heat dissipation speed is faster. The breathable and water-proof membrane 11 isolates the external water to prevent the external water from entering the outer frame 1 and affecting the battery core 3. The filter screen 12 isolates the external dust and impurities to ensure the cleanliness of the outer frame 1.

Claims

1. A lithium battery pack structure for a two-wheeled electric vehicle, comprising an outer frame (1); characterized in that: A partition (2) is fixedly connected to the middle of the outer frame (1), a plurality of battery cells (3) are arranged inside the outer frame (1), a heat conducting plate (4) is arranged at the corner of the battery cell (3), a heat dissipation rod (5) is fixedly connected to the side of the heat conducting plate (4), a heat dissipation column (6) is arranged inside the partition (2), and a heat conducting rod (7) is arranged between the heat conducting plate (4) and the heat dissipation column (6); A plurality of input holes (8) are provided on the inner wall of the outer frame (1), a plurality of output holes (9) are provided on the outer wall of the outer frame (1), a connecting hole (10) is provided between the input holes (8) and the output holes (9), a breathable and waterproof membrane (11) is provided in the input hole (8), and a filter screen (12) is provided in the output hole (9).

2. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 1, characterized in that: The outer frame (1) is provided with a connection plate (13), and a plurality of partitions (2) are evenly arranged in the outer frame (1).

3. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 2, characterized in that: The plurality of battery cores (3) are evenly arranged between the partitions (2), and the heat conducting plate (4) is formed by splicing three plates in different directions.

4. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 3, characterized in that: There are a plurality of heat dissipation rods (5) which are evenly arranged on the side of the heat conducting plate (4), and the heat dissipation rods (5) extend outside the outer frame (1).

5. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 4, characterized in that: There are a plurality of heat dissipation columns (6) which are evenly arranged inside the partition (2), and the heat dissipation columns (6) extend to the outside of the outer frame (1).

6. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 5, characterized in that: The input hole (8) is arranged at the end of the connecting hole (10), and the output hole (9) is arranged in the middle of the connecting hole (10).

7. A lithium battery pack structure for a two-wheeled electric vehicle as claimed in claim 6, characterized in that: The air-permeable and water-proof membrane (11) is arranged at the inner end of the input hole (8), and the filter screen (12) is arranged at the outer end of the output hole (9).

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