Flashlight battery with self-adaptive heat management function

By applying thermal phase change materials to adaptive thermal management in flashlight batteries, the performance and safety issues of traditional batteries in high and low temperature environments have been solved, achieving stable operation and extended lifespan of the batteries at different temperatures.

CN223927380UActive Publication Date: 2026-02-17SHENZHEN FENGHUA MINGJIN TECH CO LTD
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Patent Information

Application Number
CN202520144841.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-22
Publication Date
2026-02-17
Estimated Expiration
2035-01-22

AI Technical Summary

Technical Problem

Traditional flashlight batteries are inadequate in terms of performance and safety under high and low temperature conditions, and cannot effectively cope with temperature changes, resulting in shortened battery life and potential explosion risks. They also cannot function properly in low temperature environments.

Method used

Adaptive thermal management is achieved by using thermal phase change materials in key parts of the battery, including thermal phase change pads, positive electrode protection plate brackets, positive electrode PCB covers and inner sleeves. The battery temperature is maintained stable by absorbing or releasing heat through phase change, preventing overheating or overcooling.

Benefits of technology

It effectively prevents battery failures caused by overheating or overcooling, improves battery safety and reliability, extends battery life, increases battery range, and meets the usage needs under different temperature environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a flashlight battery with a self-adaptive thermal management function, which comprises a cylindrical battery cell matched with a flashlight in size, a thermal phase change gasket is attached to the negative electrode end of the cylindrical battery cell, and the edges of a circle, a positive electrode protection plate support, a battery cell protection plate and a positive electrode PCB cover plate are tightly attached to the inner wall of a hardware protection sleeve cap. By applying the thermal phase change material in the flashlight battery, the flashlight battery has the functions of heat storage, temperature control and heat preservation, the thermal phase change material can automatically absorb heat of certain joule under the high temperature condition, the battery cell and the protection plate are prevented from being overheated, and materials in the battery are prevented from being damaged due to overheating; the product or battery fault risk caused by overhigh local temperature rise is effectively reduced, and the reliability of the power supply is improved; and in a low-temperature environment, the thermal phase change material in the battery can be used for heating and preserving heat of the battery core, so that the temperature loss is delayed, the influence of low temperature on the performance of the battery is reduced, and the service life of the power supply is prolonged.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a flashlight battery technical field, concretely is a flashlight battery with self -adaptation heat management function. BACKGROUND

[0002] In the use process of flashlight battery, temperature has a significant influence on its performance and safety. The conventional flashlight battery has deficiencies in dealing with temperature changes. When the battery is in a high-temperature environment or under the working conditions of strong light mode, instantaneous large current discharge, etc., the battery is prone to produce excessive temperature rise, which not only causes damage to the internal material components of the battery, reduces the battery life, but also may cause potential explosion risk. At the same time, the overheating of the battery cell and the protection plate will also affect the normal work of the battery.

[0003] In addition, when the environmental temperature is too low, such as below-20℃, the performance of the battery will be greatly affected during charging or discharging. Ordinary batteries often cannot effectively cope with such low-temperature conditions, resulting in normal work, limiting the use of flashlight in low-temperature environment, and the battery itself lacks effective heat preservation measures, so that the battery heat is easily lost, further aggravating the performance deterioration. SUMMARY

[0004] The utility model discloses a flashlight battery with self -adaptation heat management function to solve the problem of the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flashlight battery with self -adaptation heat management function, including the size of cylindrical battery cell that adapts to flashlight, the negative pole end of cylindrical battery cell is pasted with heat phase change pad, the positive pole end of cylindrical battery cell is pasted with the positive pole protection board support made of heat phase change material, one side of the positive pole protection board support is embedded with the battery cell protection plate, one side of the battery cell protection plate is detachably connected with the positive pole PCB cover sheet made of heat phase change material, the outside of cylindrical battery cell is covered with PVC outer skin cover, the inside of PVC outer skin cover is bonded with the inner cover body made of heat phase change material, the inner cover body is covered in the outside of cylindrical battery cell, and the both ends of PVC outer skin cover are also respectively covered with stainless steel pad and hardware protection cover cap for packaging the both ends of cylindrical battery cell, and the hardware protection cover cap is buckled on the outside of cylindrical battery cell positive pole shell, and the edges of positive pole protection board support, battery cell protection plate and positive pole PCB cover sheet are tightly combined with the inner wall of hardware protection cover cap.

[0006] As a preferred scheme of the utility model: the phase change temperature range of heat phase change pad, positive pole protection board support, positive pole PCB cover sheet and inner cover body is 30-50℃.

[0007] As one preferred scheme of the utility model: the recess is arranged on one side of the positive electrode protection plate support and is used for accommodating the surface electronic components of the battery cell protection plate, and a plurality of assembly holes are arranged on the surfaces of the positive electrode protection plate support and the battery cell protection plate.

[0008] As one preferred scheme of the utility model: a plurality of plug-in columns are fixedly connected to one side of the positive electrode PCB cover plate, and the plug-in columns are inserted into the assembly holes and are tightly plugged after the positive electrode PCB cover plate is pressed against the battery cell protection plate.

[0009] As one preferred scheme of the utility model: a ring-shaped protrusion is arranged on one side of the thermal phase change pad, a ring-shaped groove is arranged on one side of the stainless steel pad, and the ring-shaped protrusion is embedded in the ring-shaped groove when the stainless steel pad is pasted with the thermal phase change pad.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1) The utility model applies the thermal phase change material in the flashlight battery, has the heat storage temperature control and heat preservation function, the thermal phase change material can automatically absorb a certain joule heat in the high temperature condition, avoids the overheating of the battery cell and the protection plate, prevents the damage of the internal material of the battery due to overheating, effectively reduces the product or battery failure risk caused by the local temperature rise, and improves the reliability of the power supply; in the low temperature environment, the thermal phase change material in the battery can be used to heat and preserve the battery cell, delay the temperature loss, reduce the influence of low temperature on the performance of the battery, and prolong the service life of the power supply.

[0012] 2) The application of the thermal phase change material in the flashlight battery can prevent the local heat accumulation effect of the flashlight battery in the large current discharge, avoid the local overheating of the battery cell body, and prevent the reduction of the service life and the potential explosion risk caused by the damage of the internal material of the battery, thereby ensuring the safety performance of the battery. Moreover, the thermal phase change pad, the positive electrode protection plate support, the positive electrode PCB cover plate and the inner sleeve body arranged at the key positions of the battery can accurately realize the adaptive management of the battery temperature, significantly improve the endurance time of the battery, and meet the use demand of the user for the flashlight battery in different temperature environments. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the utility model;

[0014] Figure 2 It is one of the structure schematic views of the utility model;

[0015] Figure 3 It is a sectional view of the utility model;

[0016] Figure 4 It is a split schematic view of the utility model;

[0017] Figure 5 It is one of split schematic views of the utility model;

[0018] Figure 6 It is a working process schematic view of the utility model.

[0019] In the drawing: 100, cylindrical battery cell; 110, thermal phase change pad; 111, ring-shaped protrusion; 120, positive electrode protection plate support; 121, groove; 122, assembly hole; 130, cell protection plate; 140, positive electrode PCB cover sheet; 141, plug-in column; 200, PVC outer skin sleeve; 210, inner sleeve body; 300, stainless steel pad; 310, ring-shaped groove; 400, hardware protection sleeve cap. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] EMBODIMENT

[0022] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a flashlight battery with adaptive thermal management function, including the cylindrical battery cell 100 of size adaptation to flashlight, the negative electrode end of cylindrical battery cell 100 is pasted with thermal phase change pad 110, the positive electrode end of cylindrical battery cell 100 is pasted with the positive electrode protection plate support 120 made of thermal phase change material, one side of positive electrode protection plate support 120 is embedded with cell protection plate 130, one side of cell protection plate 130 is detachably connected with the positive electrode PCB cover sheet 140 made of thermal phase change material, the outside of cylindrical battery cell 100 is covered with PVC outer skin sleeve 200, the inside of PVC outer skin sleeve 200 is bonded with the inner sleeve body 210 made of thermal phase change material, inner sleeve body 210 is covered in the outside of cylindrical battery cell 100, and the inside of both ends of PVC outer skin sleeve 200 is also covered with the stainless steel pad 300 and hardware protection sleeve cap 400 for encapsulating the both ends of cylindrical battery cell 100 respectively, and hardware protection sleeve cap 400 is buckled in the outside of the positive electrode shell of cylindrical battery cell 100, while, the edge of positive electrode protection plate support 120, cell protection plate 130 and positive electrode PCB cover sheet 140 is tightly combined with the inner wall of hardware protection sleeve cap 400.

[0023] Specifically, the cylindrical battery cell 100 adapted to the flashlight can determine the approximate size of the flashlight battery, making the battery better suited for the flashlight. As the core energy source of the battery, the cylindrical battery cell 100 can effectively provide power to the flashlight. The thermal phase change pad 110 attached to the negative end of the cylindrical battery cell 100 can respond quickly when the temperature fluctuates, absorbing or releasing heat through its own phase change characteristics, effectively maintaining the temperature stability of the negative end of the battery.

[0024] The positive electrode protection plate bracket 120, made of thermal phase change material, not only provides structural support but also allows for thermal regulation during temperature changes. The positive electrode PCB cover 140, also made of thermal phase change material, is detachably connected to one side of the cell protection plate 130. When the battery generates heat during operation, it can quickly conduct heat away, preventing heat accumulation. The PVC outer sheath 200 not only provides physical protection but also has an inner sheath 210 made of thermal phase change material bonded to its inner side, which fully encloses the cylindrical battery cell 100, acting as a thermal buffer layer and further enhancing the cell's temperature regulation capability. The cell protection plate 130 is used to monitor and protect the cell in real time, preventing abnormal conditions such as overcharging and over-discharging.

[0025] The stainless steel gasket 300 and the metal protective cap 400, together with the PVC outer sleeve 200, encapsulate the cylindrical battery cell 100 and other components to ensure the stability of the battery structure. The positive electrode protection board bracket 120, the cell protection board 130, and the positive electrode PCB cover 140 are tightly fitted and installed with the metal protective cap 400. The metal protective cap 400 not only ensures the stability of the internal structure of the battery, but also provides technical support for heat transfer and collaborative work between internal components, enabling the flashlight battery of this utility model to operate efficiently and stably in different temperature environments.

[0026] In this embodiment, the phase change temperature range of the thermal phase change pad 110, the positive electrode protection plate bracket 120, the positive electrode PCB cover 140, and the inner sleeve 210 is 30-50℃.

[0027] Specifically, based on the common working scenarios and performance requirements of flashlight batteries, the phase change temperature range of the thermal phase change pad 110, the positive electrode protection board bracket 120, the positive electrode PCB cover 140 and the inner sleeve 210 is set in the temperature range of 30-50℃.

[0028] When the temperature of the battery enters the phase change temperature range during normal use, the thermal phase change pad 110, the positive electrode protection plate support 120, the positive electrode PCB cover 140 and the inner sleeve body 210 made of thermal phase change material rapidly undergo phase change; when the temperature rises, the components absorb heat and convert the excess heat into latent heat of phase change of the components, thereby effectively inhibiting the further rise of the battery temperature and avoiding damage to the internal structure and chemical properties of the battery caused by high temperature; when the temperature drops, the components release the stored heat, slowing down the reduction speed of the battery temperature, so that the battery can work in a relatively stable temperature range, effectively improving the adaptability and stability of the battery under different environmental temperatures, prolonging the service life and working efficiency of the battery.

[0029] In the embodiment, the positive electrode protection plate support 120 is provided with a groove 121 on one side for accommodating the surface electronic components of the battery cell protection plate 130, and the positive electrode protection plate support 120 and the battery cell protection plate 130 are both provided with a plurality of assembly holes 122, and the positive electrode PCB cover 140 is fixedly connected with a plurality of plug-in columns 141, and after the positive electrode PCB cover 140 is pressed against the battery cell protection plate 130, the plug-in columns 141 are inserted into and tightly plugged into the assembly holes 122.

[0030] Specifically, the groove 121 provided on one side of the positive electrode protection plate support 120 allows the surface electronic components of the battery cell protection plate 130 to be placed inside the groove 121 during assembly, while ensuring that the internal structure of the battery is more compact and reasonable, avoiding the shaking or collision of the electronic components inside the battery, and ensuring the working stability thereof.

[0031] The plurality of assembly holes 122 evenly distributed on the surfaces of the positive electrode protection plate support 120 and the battery cell protection plate 130 achieve stable connection between the positive electrode PCB cover 140 and the battery cell protection plate 130 and the positive electrode protection plate support 120 after the plug-in columns 141 of the positive electrode PCB cover 140 are inserted into the assembly holes 122 and pressed, ensuring that the components will not loosen or shift between each other under the daily use and possible vibration and impact of the battery, ensuring the integrity of the battery structure, in addition, the plug-in columns 141 can also serve as a heat conduction structure, which can further increase the heat conduction efficiency between the positive electrode PCB cover 140 and the battery cell protection plate 130 and the positive electrode protection plate support 120, so that the positive electrode PCB cover 140 can more quickly and effectively transfer the heat generated by the battery during the heat dissipation process, thereby achieving precise control of the battery temperature and further ensuring the reliable operation of the battery system.

[0032] In the embodiment, the thermal phase change pad 110 is provided with a ring-shaped protrusion 111 on one side, and the stainless steel pad 300 is provided with a ring-shaped groove 310 on one side, and when the stainless steel pad 300 is attached to the thermal phase change pad 110, the ring-shaped protrusion 111 is embedded in the ring-shaped groove 310.

[0033] Specifically, when the stainless steel gasket 300 and the thermal phase change gasket 110 are attached to each other, the ring-shaped protrusion 111 can be closely and accurately embedded in the ring-shaped groove 310, ensuring the accurate fixing of the position between the thermal phase change gasket 110 and the stainless steel gasket 300, avoiding the relative displacement of the two in the production, transportation and use of the battery, and the close cooperation of the ring-shaped protrusion 111 and the ring-shaped groove 310 further increases the contact area between the two, creating more favorable conditions for heat transfer, so that the thermal phase change gasket 110 can more efficiently transfer the heat generated by the battery cell to the stainless steel gasket 300 when managing the negative electrode end of the cylindrical battery cell 100, effectively ensuring that the negative electrode end temperature of the battery is always within a reasonable range during operation.

[0034] The contents not described in detail in the description belong to the prior art known to those skilled in the art, although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flashlight battery having adaptive thermal management functionality, characterized by: The application relates to a cylindrical battery cell (100) suitable for a flashlight, characterized in that the negative terminal of the cylindrical battery cell (100) is attached with a thermal phase change pad (110), the positive terminal of the cylindrical battery cell (100) is attached with a positive protection plate support (120) made of thermal phase change material, one side of the positive protection plate support (120) is embedded with a cell protection plate (130), one side of the cell protection plate (130) is detachably connected with a positive PCB cover sheet (140) made of thermal phase change material, the cylindrical battery cell (100) is externally covered with a PVC outer skin cover (200), the inner side of the PVC outer skin cover (200) is attached with an inner cover body (210) made of thermal phase change material, the inner cover body (210) is externally covered on the cylindrical battery cell (100), and the inner sides of the two ends of the PVC outer skin cover (200) are further externally covered with a stainless steel pad (300) and a hardware protection cover cap (400) for encapsulating the two ends of the cylindrical battery cell (100), and the hardware protection cover cap (400) is buckled on the outside of the positive shell of the cylindrical battery cell (100), meanwhile, the edges of the positive protection plate support (120), the cell protection plate (130) and the positive PCB cover sheet (140) are tightly attached with the inner wall of the hardware protection cover cap (400).

2. The flashlight battery with adaptive thermal management function according to claim 1, wherein: The phase change temperature range of the thermal phase change pad (110), the positive protection plate support (120), the positive PCB cover sheet (140) and the inner cover body (210) is 30-50 DEG C.

3. The flashlight battery with adaptive thermal management function according to claim 1, wherein: The positive protection plate support (120) is provided with a groove (121) on one side for accommodating the surface electronic components of the cell protection plate (130), and the surfaces of the positive protection plate support (120) and the cell protection plate (130) are provided with a plurality of assembly holes (122).

4. The flashlight battery with adaptive thermal management function according to claim 1, wherein: The positive PCB cover sheet (140) is fixedly connected with a plurality of plug-in columns (141) on one side, and the plug-in columns (141) are inserted into and tightly plugged into the assembly holes (122) after the cell protection plate (130) is pressed by the positive PCB cover sheet (140).

5. The flashlight battery with adaptive thermal management function according to claim 1, wherein: The thermal phase change pad (110) is provided with a ring-shaped protrusion (111) on one side, the stainless steel pad (300) is provided with a ring-shaped groove (310) on one side, and when the stainless steel pad (300) is attached with the thermal phase change pad (110), the ring-shaped protrusion (111) is embedded in the ring-shaped groove (310).