Charging power supply with low-temperature pre-charging function

Abstract

The invention relates to the technical field of electronic equipment charging, in particular to a charging power supply with a low-temperature pre-charging function. The power source comprises a power source shell, the power source shell is composed of a bottom base frame and a top packaging frame cover, the top packaging frame cover is arranged above the bottom base frame, a battery pack is arranged on the power source shell and used for storing electric energy, a battery fixing frame is arranged on the power source shell, and the battery fixing frame is arranged on the outer side of the battery pack and used for fixing the battery pack. The battery fixing frame is used for reinforcing the battery pack, a battery pack heating rod is arranged on the battery fixing frame, an electric heating wire is arranged on the battery pack heating rod, and the battery pack heating rod is heated through the electric heating wire to provide heat for the outer side of the battery pack. Through a heat conduction mode, heat on the heating wire is transferred to the outer side of the battery pack, so that the charging efficiency of the power supply can be improved when the battery pack is charged on the outer side.

Description

Technical Field

[0001] This invention relates to the field of electronic device charging technology, and in particular to a charging power supply with a low-temperature pre-charging function. Background Technology

[0002] With the widespread use of portable electronic devices, the corresponding charging power supplies, such as power banks, car chargers, and fixed charging cabinets, have become indispensable accessories in people's daily lives and industrial production. The core power source of these devices is usually a lithium-ion battery pack or a lithium polymer battery pack. The performance and safety of lithium-ion battery packs are highly dependent on their operating temperature. In low-temperature environments, the viscosity of the electrolyte inside the battery pack increases, the ionic conductivity decreases, and the activity of the electrode materials decreases, resulting in a significant increase in the internal impedance of the battery pack. Under these conditions, directly charging the battery pack with conventional current will cause a series of serious problems.

[0003] First, there is a serious safety hazard. At low temperatures, the rate at which lithium ions intercalate on the surface of the negative electrode slows down. A large number of lithium ions will precipitate on the surface of the negative electrode in the form of metallic lithium, forming needle-like or dendritic lithium dendrites. When these lithium dendrites grow to a certain extent, they may pierce the separator between the positive and negative electrodes of the battery pack, causing an internal short circuit and generating a large amount of heat instantly. This can easily lead to thermal runaway of the battery pack, causing smoke, fire, or even explosion. Second, there is a serious deterioration in charging performance. Due to the increased internal resistance, the charging efficiency is extremely low, and most of the electrical energy is converted into heat energy, which not only wastes energy but may also cause local overheating.

[0004] There is a portable integrated power supply with low-temperature charging preheating technology (publication number: CN214543752U). During use, the preheating plate can preheat the power supply and maintain a constant temperature, helping the power supply maintain its power supply efficiency at low temperatures. However, in actual use, although the heat from the preheating plate can improve the power supply efficiency after being transferred to the power supply, the power supply itself also dissipates heat during charging. The preheated heat on the outside of the power supply will hinder the dissipation of the power supply's own heat. Furthermore, the preheated heat and the heat dissipated by the power supply will accumulate, increasing the heat around the power supply and causing damage to the power supply, which poses a certain safety hazard. Summary of the Invention

[0005] To address the problems existing in the background technology, a charging power supply with low-temperature pre-charge function is proposed.

[0006] This invention proposes a charging power supply with a low-temperature pre-charging function, including a power supply housing. The power supply housing is composed of a bottom base frame and a top encapsulation frame cover, with the top encapsulation frame cover positioned above the bottom base frame. A battery pack for energy storage is disposed on the power supply housing. A battery fixing frame is disposed on the outside of the battery pack for reinforcing the battery pack. A battery pack heating rod is disposed on the battery fixing frame, and a heating wire is disposed on the battery pack heating rod. The heating wire heats the battery pack heating rod, providing heat to the outside of the battery pack.

[0007] Preferably, a heating rod assembly frame is installed on the battery fixing frame, the heating rod assembly frame is connected to the battery pack heating rod, the battery pack heating rod has a vent hole, and an airflow transmission cylinder is installed on the battery fixing frame, the airflow transmission cylinder is located in the vent hole and is adapted to the vent hole.

[0008] Preferably, the battery pack heating rod has a connecting groove 1 connected to a vent hole, and the airflow transmission cylinder has a connecting groove 2. As the battery pack heating rod rises, the connecting groove 1, the connecting groove 2, and the vent hole form an airflow channel.

[0009] Preferably, an electric push rod is installed on the power supply housing, and the telescopic shaft of the electric push rod is connected to the heating rod assembly frame for adjusting the height of the battery pack heating rod.

[0010] Preferably, the battery fixing frame has a hollow cavity, and an elastic protective plate is installed in the hollow cavity. The elastic protective plate is installed on one inner wall of the hollow cavity, and elastic protective plates in opposite directions are installed on both inner walls of the hollow cavity. The elastic protective plates increase the rigidity of the battery fixing frame and the buffering effect when subjected to impact.

[0011] Preferably, a piston is installed at the top of the airflow transmission cylinder, and the outer side of the piston contacts the inner wall of the air passage.

[0012] Preferably, the top enclosure cover has an exhaust port for discharging hot air from inside the power supply housing.

[0013] Preferably, an airflow duct is provided on the top encapsulation frame cover, and multiple airflow delivery nozzles are installed on the airflow duct. The nozzle ends of the airflow delivery nozzles are located on one side of the airflow direction adjustment lever, and are used to deliver external airflow into the battery casing.

[0014] Preferably, the top of the battery fixing frame is provided with an airflow direction adjustment lever, which is positioned above the venting groove and faces the exhaust port on the top encapsulation frame cover.

[0015] Preferably, a shielding component is provided on the top encapsulation frame cover. The shielding component is used to shield the exhaust port, ensuring the exhaust port is unobstructed when heat dissipation is required and sealing the exhaust port when heat dissipation is not required. The shielding component consists of two synchronous pulleys, a shielding belt, and a rotary motor. The two synchronous pulleys are rotatably mounted on the top encapsulation frame cover, the shielding belt is sleeved on the two synchronous pulleys, and the rotary motor is mounted on the top encapsulation frame cover. The output shaft of the rotary motor is connected to one of the synchronous pulleys to drive the shielding belt to rotate.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: Compared to traditional charging power supplies, this invention features a battery fixing frame between the battery pack and the power supply casing. This frame enhances the stability of the battery pack installation, thereby indirectly improving the safety of the battery pack. Furthermore, the battery fixing frame has a heat-conducting function. The invention includes a battery heating rod on the fixing frame and a heating wire on the heating rod. Heat is transferred from the heating wire to the outside of the battery pack through heat conduction, thus improving the charging efficiency when charging is performed from the outside of the battery pack. After the heating of the battery pack heating rod is stopped and the battery pack is officially charged, the height of the battery pack heating rod can be adjusted by an electric push rod. This allows heat to be discharged from the hollow cavity of the battery fixing frame through the connecting slot 1, connecting slot 2, and vent hole, thereby accelerating the cooling of the battery fixing frame and further cooling the battery pack. This prevents the heat generated during battery charging from accumulating with the heat generated by the battery pack heating rod, which could lead to overheating of the outside of the battery pack and improve the protection effect of the battery pack. This invention cools the battery mounting frame by adjusting the height of the battery pack heating rod. Simultaneously, the reciprocating extension and retraction of the electric telescopic rod causes the heating rod to rise and fall repeatedly. Under the action of the airflow transmission cylinder and its piston, a pulling effect is created, thereby intensifying the airflow. With the cooperation of the airflow direction adjustment lever and the airflow channel, hot air can be quickly expelled, further improving the cooling effect on the battery pack and enhancing its safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of another overall structure of the present invention; Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 4 This is a side sectional view of the present invention. Figure 5 for Figure 4 The diagram shows the structure of part A. Figure 6 This is a schematic diagram of the battery fixing frame in this invention; Figure 7 This is a schematic diagram of the heating rod assembly frame in this invention; Figure 8 This is a schematic diagram of the structure of the battery pack heating rod in this invention; Figure 9 This is a schematic diagram of the top encapsulation frame cover and shielding assembly in this invention; Figure 10 This is a schematic diagram of the shielding component in this invention.

[0018] Reference numerals: 1. Power supply casing; 101. Bottom base frame; 102. Top encapsulation frame cover; 2. Battery fixing frame; 3. Airflow transmission cylinder; 4. Heating rod assembly frame; 5. Electric push rod; 6. Battery pack heating rod; 7. Piston; 8. Heating wire; 9. Airflow direction adjustment lever; 10. Airflow duct; 11. Battery pack; 12. Exhaust vent; 13. Shielding belt; 14. Synchronous pulley; 15. Adhesive protection plate; 16. Vent; 17. Rotary motor; 18. Heat sensor. Detailed Implementation

[0019] like Figures 1-8As shown, the present invention proposes a charging power supply with low-temperature pre-charging function, comprising: a power supply housing 1, which serves as the main body of the overall structure and plays a crucial role in protection and support. The power supply housing 1 is ingeniously composed of a bottom base frame 101 and a top encapsulation frame cover 102. The top encapsulation frame cover 102 is positioned above the bottom base frame 101, and the two fit together tightly to form a safe space, providing a stable operating environment for the internal components. A conversion interface is provided on the power supply housing 1. This conversion interface is constructed using mature and reliable existing technology, and its function is to realize flexible switching between heating wire power supply and battery pack 11 charging. In low-temperature environments, when it is necessary to charge the battery pack 11, the conversion interface first guides the power to the heating wire to preheat the battery pack; after the battery pack reaches a suitable temperature, it can quickly switch to charging mode to efficiently charge the battery pack 11. A heat sensor 18 is provided on the battery fixing frame 2, which is used to monitor... The heat generated on the battery mounting frame 2 will trigger a charging conversion mechanism when the heat reaches a preset suitable temperature, ensuring that the battery pack 11 is charged under optimal temperature conditions, effectively improving charging efficiency and battery life. The battery pack 11 is mounted on the power supply casing 1 for energy storage. The battery mounting frame 2 is located on the outside of the battery pack 11, providing all-round reinforcement and protection to prevent damage to the battery pack when subjected to external impact. The battery mounting frame 2 is equipped with a battery heating rod 6, with heating wire 8 tightly wound on it. When the battery pack 11 needs to be heated, power is transmitted to the heating wire 8 through the conversion interface. The heating wire 8 heats up rapidly and efficiently transfers the heat to the battery heating rod 6. The battery heating rod 6 then evenly distributes the heat to the battery mounting frame 2, thereby providing a warm environment for the outside of the battery pack 11 and ensuring that the battery pack can be charged normally even at low temperatures.

[0020] To achieve more efficient heat transfer and airflow control, a heating rod assembly frame 4 is installed on the battery mounting frame 2. The heating rod assembly frame 4 and the battery pack heating rod 6 are fixedly connected, facilitating the movement of the battery pack heating rod 6 by the heating rod assembly frame 4. The battery pack heating rod 6 has ventilation holes, which act as carefully designed airflow channels, facilitating heat dissipation and airflow. An airflow transmission cylinder 3 is installed on the battery mounting frame 2, located inside and adapted to the ventilation holes. A connecting slot 1 is provided on the battery pack heating rod 6, which is connected to the ventilation holes. A connecting slot 2 is provided on the airflow transmission cylinder 3. When the battery pack heating rod 6 rises under the action of the electric push rod 5, the connecting slot 1, the connecting slot 2, and the ventilation holes cleverly form a complete airflow channel, accelerating heat dissipation and airflow circulation.

[0021] An electric push rod 5 is installed on the power supply casing 1. The electric push rod 5 is a key component for adjusting the height of the battery pack heating rod 6. The electric push rod 5 is tightly connected to the heating rod assembly frame 4. Through precise control, the height of the battery pack heating rod 6 can be flexibly adjusted according to actual needs. During the charging process of the battery pack 11, when the heat sensor 18 detects that the heat on the battery fixing frame 2 is too high, the electric push rod 5 will respond quickly, pushing the heating rod assembly frame 4 to rise, thereby driving the battery pack heating rod 6 to rise. As the position of the battery pack heating rod 6 changes, the heat in the cavity of the battery fixing frame 2 can be discharged more smoothly through the airflow channel, effectively reducing the temperature of the battery fixing frame 2 and improving the heat dissipation effect of the power supply.

[0022] The battery mounting frame 2 has a hollow cavity containing elastic protective sheets. This hollow cavity design not only creates an efficient buffer space for the battery mounting frame 2, effectively absorbing impact forces when subjected to external impacts and greatly reducing damage to the battery pack 11, thus providing reliable protection for the battery pack 11, but also helps the heat from the battery heating rod 6 to be distributed more evenly to all parts of the battery mounting frame 2, making the battery pack 11 heated more uniformly and further improving the heating effect. Furthermore, the elastic protective sheets in the hollow cavity are arranged in pairs with an arc-shaped design. This unique design provides excellent cushioning when compressed, further enhancing the protection of the battery pack 11. The design of the elastic protective sheets also optimizes the heat transfer path, allowing the battery mounting frame 2 to better transfer heat from the battery heating rod 6 to the battery pack 11, improving heating efficiency.

[0023] A piston 7 is installed at the top of the airflow transmission cylinder 3. The outer side of the piston 7 is in close contact with the inner wall of the vent groove. During the airflow process, the piston 7 can regulate the airflow speed to ensure that the airflow flows stably along the predetermined path, thereby further improving the heat dissipation effect. An airflow direction adjustment lever 9 is provided at the top of the battery fixing frame 2. This airflow direction adjustment lever 9 also plays an important role. The airflow direction adjustment lever 9 is located above the vent groove, adopts an arc design, and faces the exhaust port 12 on the top encapsulation frame cover 102. When the airflow discharged from the vent groove encounters the airflow direction adjustment lever 9, it will flow smoothly along the arc surface of the airflow direction adjustment lever 9 and move away from the top of the vent groove to avoid the local accumulation of heat. At the same time, under the action of the airflow direction adjustment lever 9, the heat can flow to the exhaust port 12 more quickly and be discharged from the top encapsulation frame cover 102 through the exhaust port 12, which significantly improves the heat dissipation effect of the battery pack 11.

[0024] An airflow duct 10 is provided on the top encapsulation frame cover 102. The airflow duct 10 is also an important part of the heat dissipation system. Multiple airflow delivery nozzles are installed on the airflow duct 10. The nozzle ends of the airflow delivery nozzles are located on one side of the airflow direction adjustment lever 9. During the process of the piston 7 accelerating the flow of hot air, the hot air flows upward and flows towards the exhaust port 12 under the action of the airflow direction adjustment lever 9. During the process of the piston 7 drawing in air, the external airflow will flow rapidly into the vent groove through the airflow duct 10, forming a complete airflow circulation system, which further accelerates the heat dissipation effect of the power supply and improves the safety of the power supply. Meanwhile, one end of the airflow duct 10 extends to the outside of the top encapsulation frame cover 102, and this end is in an open state. A filter screen is provided inside the port, which can effectively filter dust and impurities in the outside air and prevent them from entering the power supply and affecting the performance of the components. An exhaust port 12 is provided on one side of the top encapsulation frame cover 102. A filter screen is also provided inside the exhaust port 12. Through the reasonable opening of the exhaust port 12, the heat dissipation efficiency of the entire charging power supply is greatly improved, providing a solid guarantee for the safe use of the charging power supply.

[0025] A shielding assembly is provided on the top encapsulation frame cover 102. The shielding assembly is used to block the exhaust port 12, ensuring that the exhaust port 12 is unobstructed when heat dissipation is needed and that the exhaust port 12 is sealed when heat dissipation is not needed. The shielding assembly consists of two synchronous pulleys 14, a shielding belt 13, and a rotary motor 17. The two synchronous pulleys 14 are rotatably mounted on the top encapsulation frame cover 102, the shielding belt 13 is sleeved on the two synchronous pulleys 14, and the rotary motor 17 is mounted on the top encapsulation frame cover 102. The output shaft of the rotary motor 17 is connected to one of the synchronous pulleys 14. The connection is used to drive the shielding belt 13 to rotate. The shielding belt 13 has a vent 16, which is matched with the exhaust vent 12. When heat dissipation is required, the shielding belt 13 can be moved slightly by the rotary motor 17 to connect the vent 16 and the exhaust vent 12, allowing airflow to escape from the battery casing 1. Similarly, by misaligning the vent 16 and the exhaust vent 12, the shielding belt 13 can block the exhaust vent 12, thereby preventing airflow from entering the battery casing 1. To prevent external impurities from entering the battery casing 1 through the vent 12, ensuring a sealed environment inside the battery casing 1 and improving the safety of the charging power supply, a bonding protection plate 15 is also installed on the top encapsulation frame cover 2. The bonding protection plate 15 ensures the tightness of the fit between the shielding belt 13 and the inner wall of the top encapsulation frame cover 102, preventing gaps between the shielding belt 13 and the top encapsulation frame cover 102 that would compromise the sealing effect. Simultaneously, the bonding protection plate 15 and the vent 12 are also misaligned to ensure the tightness of the fit between the shielding belt 13 and the top encapsulation frame cover. With the inner wall of 102 in contact, when the shielding belt 13 is moved, one side of the shielding belt 13 can be cleaned through the inner edge of the exhaust port 12, ensuring the cleanliness of the shielding belt 13. When the shielding belt is in motion, it can move the impurities remaining in the exhaust port 12, thereby loosening the impurities in the exhaust port 12 and increasing the probability of them falling off, ensuring the unobstructed flow of the exhaust port 12. At the same time, in order to increase the probability of impurities accumulating in the exhaust port 12, the bottom inner wall of the exhaust port 12 is specially designed to be inclined, reducing the probability of impurities remaining.

[0026] The charging power supply of this invention should be used in a water-free environment to prevent water from entering the battery casing 1 and damaging the battery pack 11. The specific operation is as follows: When heating the battery pack 11, the heating wire 8 is first heated by electricity. The heating wire 8 quickly transfers heat to the battery pack heating rod 6, which then uses the battery fixing frame 2 to evenly transfer heat to the battery pack 11, providing a suitable heating environment. Once the battery pack 11 has been heated to a suitable temperature, electrical energy can be smoothly transferred to the battery pack 11, initiating charging and completing the entire charging process. During the charging process of the power source, while the battery pack 11 is being charged, the heat sensor 18 continuously monitors the heat on the battery fixing frame 2 in real time. Once the heat is too high, the electric push rod 5 will be activated immediately, pushing the heating rod assembly frame 4 to rise, which in turn raises the battery pack heating rod 6 to a suitable height. At this time, the heat in the hollow chamber of the battery fixing frame 2 is quickly discharged into the vent hole through the connecting slot 1 and connecting slot 2 with the airflow, and then efficiently discharged through the vent hole, effectively accelerating the cooling speed of the battery fixing frame 2, thereby improving the heat dissipation effect of the entire power supply and ensuring that the charging process is safe, stable and efficient.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A charging power supply with low-temperature pre-charge function, comprising: The power supply casing (1) is characterized in that, The power supply housing (1) is composed of a bottom base frame (101) and a top encapsulation frame cover (102). The top encapsulation frame cover (102) is located above the bottom base frame (101). A battery pack (11) is provided on the power supply housing (1) for energy storage. A battery fixing frame (2) is provided on the power supply housing (1). The battery fixing frame (2) is located on the outside of the battery pack (11) for reinforcing the battery pack (11). A battery heating rod (6) is provided on the battery fixing frame (2). A heating wire (8) is provided on the battery heating rod (6). The heating wire (8) heats the battery heating rod (6) to provide heat to the outside of the battery pack (11).

2. A charging power supply with low-temperature pre-charge function according to claim 1, characterized in that, A heating rod assembly frame (4) is installed on the battery fixing frame (2). The heating rod assembly frame (4) is connected to the battery pack heating rod (6). A vent hole is provided on the battery pack heating rod (6). An airflow transmission cylinder (3) is installed on the battery fixing frame (2). The airflow transmission cylinder (3) is located inside the vent hole and is adapted to the vent hole.

3. A charging power supply with low-temperature pre-charge function according to claim 1, characterized in that, A connecting groove 1 is provided on the battery pack heating rod (6), and the ventilation hole of the connecting groove 1 is connected. A connecting groove 2 is provided on the airflow transmission cylinder (3). As the battery pack heating rod (6) rises, the connecting groove 1, the connecting groove 2 and the ventilation hole form an airflow channel.

4. A charging power supply with low-temperature pre-charge function according to claim 3, characterized in that, An electric push rod (5) is installed on the power supply housing (1). The telescopic shaft of the electric push rod (5) is connected to the heating rod assembly frame (4) to adjust the height of the battery pack heating rod (6).

5. A charging power supply with low-temperature pre-charge function according to claim 1, characterized in that, A hollow cavity is provided on the battery fixing frame (2), and an elastic protective plate is provided in the hollow cavity. The elastic protective plate is located on one side of the inner wall of the hollow cavity, and elastic protective plates in opposite directions are provided on both sides of the inner wall of the hollow cavity. The elastic protective plate increases the hardness of the battery fixing frame (2) and the buffering effect when it is impacted.

6. A charging power supply with low-temperature pre-charge function according to claim 2, characterized in that, A piston (7) is installed at the top of the airflow transmission cylinder (3), and the outer side of the piston (7) is in contact with the inner wall of the air passage.

7. A charging power supply with low-temperature pre-charge function according to claim 6, characterized in that, An exhaust port (12) is provided on the top encapsulation frame cover (102) to exhaust the hot air flow inside the power supply housing (1).

8. A charging power supply with low-temperature pre-charge function according to claim 7, characterized in that, An airflow pipe (10) is provided on the top encapsulation frame cover (102). Multiple airflow delivery nozzles are installed on the airflow pipe (10). The nozzle end of the airflow delivery nozzle is located on one side of the airflow direction adjustment lever (9) and is used to deliver external airflow into the battery casing (1).

9. A charging power supply with low-temperature pre-charge function according to claim 7, characterized in that, The top of the battery fixing frame (2) is provided with an airflow direction adjustment lever (9), which is located above the venting groove and faces the exhaust port (12) on the top encapsulation frame cover (102).

10. A charging power supply with low-temperature pre-charge function according to claim 1, characterized in that, A shielding component is provided on the top encapsulation frame cover (102). The shielding component is used to shield the exhaust port (12), ensuring the unobstructed flow of the exhaust port (12) when heat dissipation is required, and ensuring the sealing of the exhaust port (12) when heat dissipation is not required. The shielding assembly consists of two synchronous pulleys (14), a shielding belt (13), and a rotary motor (17). The two synchronous pulleys (14) are rotatably mounted on the top encapsulation frame cover (102). The shielding belt (13) is sleeved on the two synchronous pulleys (14). The rotary motor (17) is mounted on the top encapsulation frame cover (102). The output shaft of the rotary motor (17) is connected to one of the synchronous pulleys (14) to drive the shielding belt (13) to rotate.

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