Lithium battery with safety protection performance for electric power tools

Abstract

The utility model relates to a lithium cell with safety protection performance for electric tool, including shell, the left side of shell top is equipped with ventilation opening, the inside bottom of shell is equipped with first limit board, the front side of first limit board extends and is equipped with the second limit board upwards, the rear side of first limit board top is equipped with third limit board, the inside top of shell is equipped with first exhaust groove, the inside bottom of shell is equipped with second exhaust groove, and the first exhaust groove is connected with second exhaust groove and has the exhaust duct, the left side rotation of exhaust duct is equipped with drive block, and the outside of drive block is hinged and has a plurality of exhaust fan, and the outside of exhaust fan all is equipped with slide rod. The utility model discloses through first ventilation hole, second ventilation hole and ventilation opening and so on many ventilation structures, forms double -flow channel heat dissipation path, makes internal heat can be quickly, effectively and discharged, avoids the accumulation of heat in the battery inside, effectively reduces the battery temperature, reduces the security risk of the high temperature.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a lithium battery for power tools with safety protection performance. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries that have been widely used in many fields due to their unique performance advantages. However, during use, the electrochemical reactions inside lithium-ion batteries generate heat. When the heat accumulates, it can easily cause the battery temperature to rise, leading to fires or even explosions, posing a serious safety threat to users and equipment. Existing lithium-ion batteries only have one heat dissipation point, which cannot quickly and evenly distribute the external temperature to every part of the lithium-ion battery, severely limiting heat dissipation efficiency and increasing safety risks. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery for power tools with safety protection performance, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery for power tools with safety protection performance, comprising a shell, a vent on the top left side of the shell, a first limiting plate at the bottom of the shell, a second limiting plate extending upward from the front side of the first limiting plate, a third limiting plate at the rear top side of the first limiting plate, a first exhaust groove at the top of the shell, a second exhaust groove at the bottom of the shell, an exhaust duct connected between the first exhaust groove and the second exhaust groove, a driving block rotatably disposed on the left side of the exhaust duct, a plurality of exhaust fans hinged to the outside of the driving block, and a sliding rod disposed on the outside of each exhaust fan.

[0005] Preferably, a slide rail is recessed on the right side of the inner wall of the exhaust duct, and all the slide rods slide on the slide rail.

[0006] Preferably, a first ventilation hole is provided on the right side of the exhaust duct.

[0007] Preferably, a ventilator extends from the left side of the outer casing, and a second ventilation hole is provided on the ventilator.

[0008] Preferably, a filter screen is provided on the top of the housing above the vent.

[0009] Preferably, the drive block is installed at the eccentric position of the exhaust duct.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model forms a dual-channel heat dissipation path through multiple ventilation structures such as the first ventilation hole, the second ventilation hole, and the ventilation opening, which enables the internal heat to be discharged quickly and effectively, avoiding the accumulation of heat inside the battery, effectively reducing the battery temperature, and reducing safety hazards caused by high temperature.

[0012] In this utility model, the exhaust fan inside the exhaust duct rotates in an open state under the drive of the eccentric drive block, and the slide rod slides in the slide rail, making the internal gas flow smoother and more uniform, further improving the heat dissipation efficiency, ensuring that heat can be quickly replaced, and keeping the battery always within a suitable operating temperature range.

[0013] The hollow limiting frame formed for the lithium battery in this utility model can prevent the battery from shifting or colliding due to vibration or other reasons during use while meeting heat dissipation requirements, thereby protecting the battery structure from damage and reducing safety risks.

[0014] The filter design above the ventilation opening at the top of the outer casing in this utility model effectively prevents impurities and dust from the external environment from entering the casing, avoiding contamination and corrosion of the internal structure of the battery by impurities and ensuring the service life of the battery. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0018] Figure 4 This is a three-dimensional structural diagram of the limiting structure in this utility model.

[0019] The numbers in the diagram are: 1-outer shell, 2-ventilation port, 3-first limiting plate, 4-second limiting plate, 5-third limiting plate, 6-first exhaust channel, 7-second exhaust channel, 8-exhaust duct, 9-drive block, 10-exhaust fan, 11-slide rod, 12-slide rail, 13-first ventilation hole, 14-ventilation duct, 15-second ventilation hole, 16-filter. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figures 1 to 4 The lithium battery for power tools with safety protection features includes a housing 1, a vent 2 on the top left side of the housing 1, and is characterized by a first limiting plate 3 at the bottom inside the housing 1, a second limiting plate 4 extending upward from the front side of the first limiting plate 3, a third limiting plate 5 at the rear top side of the first limiting plate 3, a first exhaust groove 6 at the top inside the housing 1, a second exhaust groove 7 at the bottom inside the housing 1, an exhaust duct 8 connecting the first exhaust groove 6 and the second exhaust groove 7, a drive block 9 rotatably mounted on the left side inside the exhaust duct 8, a plurality of exhaust fans 10 hinged to the outside of the drive block 9, and a slide rod 11 on the outside of each exhaust fan 10; a slide rail 12 recessed on the right side of the inner wall of the exhaust duct 8, within which the slide rods 11 slide; a first ventilation hole 13 on the right side of the exhaust duct 8; a vent 14 extending from the left side of the housing 1, with a second ventilation hole 15 on the vent 14; a filter screen 16 located above the vent 2 at the top of the housing 1; and the drive block 9 mounted eccentrically on the exhaust duct 8.

[0023] This invention utilizes multiple ventilation structures, including the first ventilation hole 13, the second ventilation hole 15, and the ventilation opening 2, to form a dual-channel heat dissipation path. This allows internal heat to be quickly and effectively dissipated, preventing heat accumulation inside the battery, effectively reducing battery temperature, and minimizing safety hazards caused by high temperatures. In this invention, the exhaust fan 10 inside the exhaust duct 8 rotates in an open state under the drive of the eccentric drive block 9, and the slide rod 11 slides within the slide rail 12, making the internal gas flow smoother and more uniform, further improving heat dissipation efficiency, ensuring rapid heat replacement, and keeping the battery within a suitable operating temperature range. The hollowed-out limiting frame formed for the lithium battery in this invention can meet heat dissipation requirements while preventing displacement or collision of the battery due to vibration or other reasons during use, thereby protecting the battery structure from damage and reducing safety risks. The filter 16 above the ventilation opening 2 at the top of the outer casing 1 effectively prevents impurities and dust from entering the outer casing 1, avoiding contamination and corrosion of the battery's internal structure and ensuring battery lifespan.

[0024] Example 2

[0025] like Figures 1 to 4The diagram shows a lithium battery for power tools with safety protection features, including a casing 1 to provide basic physical protection for the lithium battery, preventing damage from external impacts and environmental factors. The casing 1 is made of a robust material capable of withstanding certain external pressure and impacts. A vent 2 is provided on the top left side of the casing 1 to dissipate the heat generated during the operation of the lithium battery. Since hot air rises naturally, the vent 2 at the top helps to effectively dissipate heat and reduce temperature accumulation inside the battery.

[0026] The bottom of the outer casing 1 is provided with a first limiting plate 3, which is used to limit the placement of the lithium battery. At the same time, a second limiting plate 4 is provided extending upward from the front side of the first limiting plate 3. The second limiting plate 4 is recessed in front of the first limiting plate 3. A third limiting plate 5 is provided on the rear side of the top of the first limiting plate 3. The third limiting plate 5 is right-angled and limits the top of the lithium battery from the rear side upward. In this way, the first limiting plate 3, the second limiting plate 4 and the third limiting plate 5 form a hollow limiting frame with the same size as the lithium battery, which not only meets the heat dissipation requirements but also limits the lithium battery.

[0027] The top of the outer casing 1 is provided with a first exhaust groove 6, and the bottom of the outer casing 1 is provided with a second exhaust groove 7. An exhaust duct 8 is connected between the first exhaust groove 6 and the second exhaust groove 7. The second exhaust groove 7 cooperates with the first exhaust groove 6 to form an effective gas flow path. At the same time, a ventilation duct 14 extends from the left side of the outer casing 1. The ventilation duct and the exhaust duct 8 are on the same horizontal line. A first ventilation hole 13 is opened on the right side of the exhaust duct 8, and a second ventilation hole 15 is opened on the ventilation duct 14. That is, external air can be discharged into the outer casing 1 through the first ventilation hole 13 and the second ventilation hole 15 to replace the internal hot gas and achieve the heat dissipation effect.

[0028] A drive block 9 is rotatably mounted on the left side inside the exhaust duct 8. The drive block 9 can be driven by a micro-drive component such as a motor or cylinder, or it can be directly connected to a lithium battery for power drive. The drive block 9 is hexagonal in shape, and an exhaust fan 10 is hinged at each of the three diagonal points. That is, the rotation of the drive block 9 will drive the exhaust fan 10 to rotate, achieving heat exchange. In order to further optimize the internal gas flow, a slide rod 11 is also provided on the outside of the exhaust fan 10. At the same time, a slide rail 12 is recessed on the right side of the inner wall of the exhaust duct 8. That is, the slide rod 11 slides on the slide rail 12. The rotation of the drive block 9 will drive the exhaust fan 10 to rotate in an open state inside the exhaust duct 8, and perform heat exchange on the internal gas.

[0029] Furthermore, in this embodiment, the installation position of the drive block 9 is set to an eccentric position, that is, when it rotates, it drives the exhaust fan 10 to rotate in the exhaust duct 8 in an open state, and rotates at different angles in sequence, which optimizes air flow, ensures that the air is evenly distributed inside the equipment, improves cooling efficiency, and the eccentric design helps to achieve heat exchange through rotational motion, thereby improving heat dissipation efficiency.

[0030] In general, internal heat can be discharged and replaced through the first ventilation hole 13 to the ventilation port 2, or through the first ventilation hole 13 and the second ventilation hole 15. While achieving dual-channel heat dissipation, the design of the eccentric exhaust fan also optimizes the internal airflow, ultimately greatly improving cooling efficiency.

[0031] Furthermore, the filter 16, located at the top of the housing 1 above the vent 2, effectively prevents impurities from the external environment from entering the housing 1, thus protecting the lithium battery. The design of the filter 16 helps prevent impurities from the external environment from entering the housing 1, protecting the lithium battery and improving its lifespan.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A lithium battery for power tools with safety protection features, comprising a casing, wherein a ventilation opening is provided on the top left side of the casing, characterized in that, The bottom of the outer shell is provided with a first limiting plate, the front side of the first limiting plate extends upward to provide a second limiting plate, the top rear side of the first limiting plate is provided with a third limiting plate, the top of the outer shell is provided with a first exhaust groove, the bottom of the outer shell is provided with a second exhaust groove, an exhaust duct is connected between the first exhaust groove and the second exhaust groove, a drive block is rotatably provided on the left side of the exhaust duct, and multiple exhaust fans are hinged to the outside of the drive block, and each exhaust fan is provided with a slide rod on the outside.

2. The lithium battery for power tools with safety protection performance according to claim 1, characterized in that, The right side of the inner wall of the exhaust duct is recessed with a slide rail, and all the slide rods slide on the slide rail.

3. A lithium battery for power tools with safety protection performance according to claim 2, characterized in that, The exhaust duct has a first ventilation hole on its right side.

4. A lithium battery for power tools with safety protection performance according to claim 1, characterized in that, A ventilator extends from the left side of the outer casing, and a second ventilation hole is provided on the ventilator.

5. A lithium battery for power tools with safety protection performance according to claim 1, characterized in that, A filter screen is provided on the top of the outer casing, above the vent.

6. A lithium battery for power tools with safety protection performance according to claim 1, characterized in that, The drive block is installed at the eccentric position of the exhaust duct.

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