A battery management protection device

Abstract

The present invention relates to the field of battery protection technology, and discloses a battery management and protection device, which includes a shell, a positioning frame is fixedly installed on the inner wall of the shell, a battery block is fixedly installed inside the positioning frame, a hair dryer is fixedly installed on the inner wall of the shell, the output end of the hair dryer is fixedly connected to an air duct, an air outlet is fixedly installed on the side wall of the positioning frame, and a reflux component is arranged inside the air outlet. The battery management and protection device is provided with a reflux component, which controls and guides the airflow in the shell to generate reflux through the air duct due to the different flow rates of the internal and external airflows, increases the mixing effect between the airflow blown out by the hair dryer and the refluxed airflow in the air duct, thereby accelerating the temperature exchange speed of the air in the shell, improving the efficiency of the temperature balance in the shell, allowing the battery block to maintain a good working state more quickly, and extending the service life of the battery block.

Description

Technical Field

[0001] The present invention relates to the technical field of battery protection, and in particular to a battery management and protection device. Background Art

[0002] In recent years, due to the increase in energy consumption, the new energy market has received more and more attention, especially the battery or power storage industry, which has gradually developed along with the development of the new energy market. As a sustainable device that can store electricity, the battery needs to undergo countless charging and discharging processes during its service life. During the charging and discharging process, the battery pack is easily affected by the external voltage and may be overcharged or over-discharged. Therefore, a battery management protection device is needed.

[0003] The existing battery management and protection devices mainly protect the battery during the charging and discharging process by maintaining the temperature balance of the internal space of the power storage device, ensuring that a single battery in multiple battery packs will not be overcharged and overheated, thereby aggravating the battery loss and reducing the service life and normal function of the battery pack. By setting a corresponding temperature sensing unit inside the power storage device, the temperature inside the power storage device can be timely controlled in real time, thereby improving the service life of the battery pack in the power storage device.

[0004] However, during the actual use of the above-mentioned equipment, the hot air or cold air blown by the hair dryer drives the original air in the internal space of the power energy storage device to mix and achieve temperature balance. The interactive heat exchange efficiency between the air inside the power energy storage device and the hot air or cold air completely relies on the original air flow and the free movement of molecules to achieve heat energy exchange, which is not only inefficient, but also difficult to maintain efficient circulation in the complex spatial environment inside the power energy storage device, which greatly reduces the temperature control effect. In view of this, we propose a battery management and protection device. Summary of the invention

[0005] The purpose of the present invention is to provide a battery management and protection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a battery management and protection device, comprising a shell, a charging converter is fixedly installed on the inner wall of the shell, a positioning frame is fixedly installed on the inner wall of the shell, a positioning groove is provided inside the positioning frame, a battery block is fixedly installed inside the positioning frame, a hair dryer is fixedly installed on the inner wall of the shell, an output end of the hair dryer is fixedly connected to an air duct, a connecting pipe is provided between the side wall of the positioning frame and the air duct, an air outlet is fixedly installed on the side wall of the positioning frame, a reflux component is provided inside the air outlet, and the reflux component comprises:

[0007] A positioning sleeve, the inner wall of the air outlet is fixedly mounted with a positioning sleeve, a sleeve is rotatably mounted at the center of the positioning sleeve, a sliding rod is slidably connected to the inner wall of the sleeve, a limit strip is fixedly mounted on the arc-shaped outer wall of the sliding rod, and an impeller is fixedly mounted on the end of the sliding rod away from the sleeve;

[0008] A fixing rod, the inner wall of the air outlet is fixedly mounted with the fixing rod, a guide ring is fixedly mounted at the center of the fixing rod, a guide bead is fixedly mounted on the inner surface of the guide ring, and a wave groove is opened on the arc-shaped outer wall of the sliding rod;

[0009] An air duct is provided on the inner wall of the air outlet.

[0010] Preferably, the connecting pipe and the interior of the positioning frame are hollow, and the connecting pipe connects the air duct and the internal cavity of the positioning frame, so that the airflow entering the air duct can enter the interior of the positioning frame through the connecting pipe, and then be discharged outward through the air outlet arranged on the side wall of the positioning frame, thereby affecting the air temperature of the internal space of the shell.

[0011] Preferably, a circular hole matching the outer diameter of the sleeve is provided at the center of the positioning sleeve, and a disc with a diameter larger than the central circular hole of the positioning sleeve is provided at the right end of the sleeve, so that the sleeve can only rotate in the circular hole opened inside the positioning sleeve, and will not have relative movement with the positioning sleeve in the horizontal direction.

[0012] Preferably, the inner wall of the sleeve is provided with a through hole matching the outer diameter of the slide rod, and the inner surface of the through hole is provided with a limiting sliding groove matching the size of the limiting strip, so that the slide rod and the sleeve can only undergo relative displacement in the horizontal direction without relative rotation.

[0013] Preferably, the guide bead is arranged inside the wavy groove. Specifically, the wavy groove is arranged in a wavy shape on the arc-shaped outer wall at the left end of the sliding rod, and the wavy groove is connected end to end, so that when the sliding rod rotates, the guide bead cooperates with the wavy groove to enable the sliding rod to swing back and forth in a small range while rotating.

[0014] Preferably, the air duct is arranged on the upper and lower sides of the air outlet, and the side of the air duct close to the right end of the air outlet is arranged in a trumpet shape, and the side of the air duct close to the left end of the air outlet is provided with a bend. When the air flow is blown out through the air outlet, the air flow rate is faster, while the air flow rate in the air duct is slow. Under the influence of air pressure, the air in the external environment flows back to the left end of the air outlet through the air duct.

[0015] Preferably, an idle mixing assembly is arranged outside the sleeve, and the idle mixing assembly includes a turntable, a turntable is rotatably mounted on the left outer wall of the positioning sleeve, blades are fixedly mounted on the arc-shaped outer wall of the turntable, a gear ring is sleeved on the arc-shaped outer wall of the sleeve, and a pinion is rotatably mounted on the inner wall of the turntable.

[0016] Preferably, a accommodating cavity is provided inside the turntable, the gear ring and the pinion are both arranged inside the accommodating cavity, the pinion meshes with the gear ring to achieve transmission, and the accommodating cavity is arranged in a circle. Specifically, a tooth pattern that can mesh with the pinion to achieve transmission is provided on the circular inner surface of the accommodating cavity, so that when the sleeve rotates, the gear ring, the pinion and the above-mentioned tooth pattern cooperate to make the turntable rotate at a lower speed than the rotation speed of the sleeve.

[0017] Preferably, a spoiler assembly is provided inside the air outlet, and the spoiler assembly includes a magnetic block. The magnetic block is fixedly installed on the right outer wall of the blade, and a fixed shaft is fixedly installed on the inner wall of the air outlet. The fixed shaft passes through a guide plate, and the guide plate is rotatably connected to the fixed shaft, one end of a spiral spring is fixedly connected to the arc-shaped outer wall of the fixed shaft, and a magnetic sheet is fixedly installed on the upper surface of the guide plate on the side close to the sleeve.

[0018] Preferably, the guide plate is arranged in a rhombus shape, and the left end of the guide plate is smaller than the right end. The fixed axis in the guide plate is arranged eccentrically, so that the guide plate is more likely to become unstable in the airflow, thereby causing a swinging posture. The magnetism of the magnetic sheet is opposite to that of the magnetic block, so that there is a certain attraction between the magnetic block and the magnetic sheet.

[0019] Compared with the prior art, the present invention provides a battery management and protection device, which has the following beneficial effects:

[0020] 1. In order to improve the efficiency of air temperature exchange in the shell, the battery management and protection device is provided with a reflux component. Due to the different flow rates of the internal and external air flows, the air flow in the shell is controlled and guided to generate reflux through the air duct, and the impeller is driven to rotate by the air flow. Then, with the cooperation of the wavy grooves and the guide beads, the slide bar performs a continuous small reciprocating motion in the horizontal direction during the continuous rotation, thereby cooperating with the rotating impeller to increase the mixing effect between the air flow blown out by the hair dryer and the refluxed air flow in the air duct, thereby accelerating the temperature exchange speed of the air in the shell, improving the efficiency of the temperature balance in the shell, enabling the battery block to maintain a good working condition more quickly, and extending the service life of the battery block.

[0021] 2. The battery management and protection device is provided with an idle mixing component, which cooperates with the gear ring, the pinion and the above-mentioned tooth pattern to enable the turntable to rotate at a speed lower than the rotation speed of the sleeve, so that there is a certain speed difference between the rotation speed of the blade driven by the turntable and the impeller, so as to better achieve the cross-mixing effect of the passing airflow, and cooperate with the impeller that continuously reciprocates left and right to further enhance the mixing effect of the airflow returning through the induced air duct and the airflow blown out by the hair dryer, thereby enhancing the interaction efficiency of the air temperature inside the shell, and further, in order to improve the diffusion efficiency of the airflow blown out of the air outlet in the shell.

[0022] 3. The battery management and protection device is provided with a spoiler component. As the turntable drives the blades to rotate, the magnetic block will attract the magnetic sheet when it moves close to it, thereby causing the left end of the guide plate to deviate, causing the guide plate to deflect around the fixed axis as the rotation axis in the airflow. Due to the setting of the volute spring, the guide plate is reset and swung, so that under the continuous rotation of the turntable, the guide plate continues to swing up and down slightly, thereby increasing the diffusion area of ​​the airflow blown out from the air outlet, improving the effect of the airflow on the temperature balance efficiency of the air in the shell, and ensuring the safe use of the battery block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure without the shell of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning frame of the present invention;

[0026] Figure 4 It is a partial cross-sectional structural schematic diagram of the air outlet of the present invention;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the air outlet of the present invention;

[0028] Figure 6 It is a partial explosion schematic diagram of the mixed flow component of the present invention;

[0029] Figure 7 This is a schematic diagram of the guide ring structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the cross-sectional structure of the turntable of the present invention;

[0031] Fig. 9 It is a schematic diagram of a partial explosion of the guide plate of the present invention.

[0032] In the figure: 1. shell; 2. charging converter; 3. positioning frame; 4. positioning slot; 5. battery pack; 6. hair dryer; 7. air duct; 8. connecting pipe; 9. air outlet; 10. positioning sleeve; 11. sleeve; 12. slide bar; 13. limit strip; 14. impeller; 15. fixing rod; 16. guide ring; 17. guide bead; 18. wave groove; 19. air duct; 20. turntable; 21. blade; 22. gear ring; 23. pinion; 24. magnetic block; 25. fixed shaft; 26. guide plate; 27. scroll spring; 28. magnetic sheet. DETAILED DESCRIPTION

[0033] like Figure 1-9 As shown, the present invention provides a technical solution: a battery management and protection device, comprising a shell 1, a charging converter 2 is fixedly installed on the inner wall of the shell 1, a positioning frame 3 is fixedly installed on the inner wall of the shell 1, a positioning groove 4 is opened inside the positioning frame 3, a battery block 5 is fixedly installed inside the positioning frame 3, a blower 6 is fixedly installed on the inner wall of the shell 1, an output end of the blower 6 is fixedly connected to an air duct 7, a connecting pipe 8 is arranged between the side wall of the positioning frame 3 and the air duct 7, an air outlet 9 is fixedly installed on the side wall of the positioning frame 3, a reflux component is arranged inside the air outlet 9, and the reflux component includes a positioning Sleeve 10, a positioning sleeve 10 is fixedly installed on the inner wall of the air outlet 9, a sleeve 11 is rotatably installed at the center of the positioning sleeve 10, a sliding rod 12 is slidably connected to the inner wall of the sleeve 11, a limiting strip 13 is fixedly installed on the arc-shaped outer wall of the sliding rod 12, an impeller 14 is fixedly installed on the end of the sliding rod 12 away from the sleeve 11, a fixing rod 15 is fixedly installed on the inner wall of the air outlet 9, a guide ring 16 is fixedly installed at the center of the fixing rod 15, a guide bead 17 is fixedly installed on the inner surface of the guide ring 16, a wavy groove 18 is provided on the arc-shaped outer wall of the sliding rod 12, and an air duct 19 is provided on the inner wall of the air outlet 9.

[0034] In one embodiment of the present invention, the charging converter 2 and the hair dryer 6 are respectively arranged inside the left and right ends of the shell 1 to avoid mutual interference between the hair dryer 6 and the charging converter 2. At the same time, an air vent is provided on the inner wall of the shell 1 close to the hair dryer 6 to facilitate the timely dissipation of heat generated by the hair dryer 6 during operation. In addition, the space formed by the positioning groove 4 and the positioning frame 3 is just adapted to the size of the battery block 5, so that the positioning frame 3 can completely wrap the battery block 5 inside it, and under the premise of ensuring the safety of the battery block 5, the battery block 5 is suspended inside the shell 1 to avoid shaking when the shell 1 is carried during use or causing excessive impact on the battery block 5 when it falls, thereby causing damage to it. Furthermore, there are two groups of air ducts 7, and the two groups of air ducts 7 are mirror-imaged. It is arranged in the front and rear inner walls of the shell 1. Specifically, the connecting pipe 8 and the interior of the positioning frame 3 are hollow, and the connecting pipe 8 makes the air duct 7 and the internal cavity of the positioning frame 3 connected through, so that the airflow entering the air duct 7 can enter the interior of the positioning frame 3 through the connecting pipe 8, and then be discharged outward through the air outlet 9 arranged on the side wall of the positioning frame 3, thereby affecting the air temperature of the internal space of the shell 1. In addition, a temperature sensor and a central controller are arranged inside the shell 1, and the temperature sensor is electrically connected to the central controller. Specifically, by pre-setting the starting temperature value of the hair dryer 6, when the internal temperature of the shell 1 reaches the above value, the central controller controls the start-up of the hair dryer 6 to start blowing out a balanced airflow in the convection air duct 7 to maintain the stability of the air temperature in the shell 1 and ensure the safe use of the battery block 5.

[0035] In the embodiment of the present invention, a circular hole matching the outer diameter of the sleeve 11 is opened at the center of the positioning sleeve 10, and a disc having a diameter larger than the central circular hole of the positioning sleeve 10 is provided at the right end of the sleeve 11, so that the sleeve 11 can only rotate in the circular hole opened inside the positioning sleeve 10, and will not move relative to the positioning sleeve 10 in the horizontal direction. At the same time, a through hole matching the outer diameter of the slide rod 12 is opened on the inner wall of the sleeve 11, and a limiting slide groove matching the size of the limiting strip 13 is opened on the inner surface of the through hole, so that the slide rod 12 and the sleeve 11 can be moved relative to each other. Only relative displacement can occur in the horizontal direction without relative rotation. In addition, the diameter of the central cavity of the guide ring 16 is adapted to the outer diameter of the slide bar 12. Specifically, the slide bar 12 is arranged in the central cavity of the guide ring 16, so that the fixing rod 15 and the guide ring 16 cooperate with the positioning sleeve 10 to provide support for the sleeve 11 and the slide bar 12 in the vertical direction without affecting the free rotation of the two. Further, the guide bead 17 is arranged inside the wave groove 18. Specifically, the wave groove 18 is arranged in a wave shape on the arc-shaped outer wall at the left end of the slide bar 12 , and the wave groove 18 is connected end to end, so that when the slide bar 12 rotates, the guide beads 17 cooperate with the wave groove 18 to make the slide bar 12 swing back and forth in a small range while rotating. At the same time, the air duct 19 is arranged on the upper and lower sides of the air outlet 9, and the air duct 19 is arranged in a trumpet shape on the side close to the right end of the air outlet 9, and the air duct 19 is arranged in a bend shape on the side close to the left end of the air outlet 9. When the air flow passes through the air outlet 9 and blows out, the air flow rate is faster, while the air flow rate in the air duct 19 is slower. Under the influence of air pressure, the air in the external environment is It flows back through the air duct 19 to the left end of the air outlet 9, at which time the impeller 14 is driven to rotate by the airflow, and then with the cooperation of the wavy groove 18 and the guide beads 17, the slide bar 12 performs a continuous small reciprocating motion in the horizontal direction during continuous rotation, thereby cooperating with the rotating impeller 14 to increase the mixing effect between the airflow blown out by the hair dryer 6 and the airflow returning in the air duct 19, thereby accelerating the temperature exchange speed of the air in the shell 1, improving the efficiency of the temperature balance in the shell 1, allowing the battery block 5 to maintain a good working state more quickly, and extending the service life of the battery block 5.

[0036] In addition, in order to better enhance the mixing effect of the reflowing airflow in the air duct 19 and the airflow blown out by the hair dryer 6, an idle mixing assembly is arranged on the outside of the sleeve 11, and the idle mixing assembly includes a turntable 20. The turntable 20 is rotatably mounted on the left outer wall of the positioning sleeve 10, and a blade 21 is fixedly mounted on the arc-shaped outer wall of the turntable 20. A gear ring 22 is sleeved on the arc-shaped outer wall of the sleeve 11, and a pinion 23 is rotatably mounted on the inner wall of the turntable 20.

[0037] In the embodiment of the present invention, the sleeve 11 is penetrated by the turntable 20, and the turntable 20 is rotatably connected with the sleeve 11, and due to the rotational connection relationship between the turntable 20 and the center of the positioning sleeve 10, the rotation of the turntable 20 will not be directly affected by the rotation of the sleeve 11. At the same time, the interior of the turntable 20 is provided with a receiving cavity, specifically, the gear ring 22 and the pinion 23 are both arranged inside the receiving cavity, and in addition, the pinion 23 meshes with the gear ring 22 to realize transmission, and the receiving cavity is arranged in a circular shape, specifically, a gear that can mesh with the pinion 23 is provided on the circular inner surface of the receiving cavity. And realize the transmission tooth pattern, so that when the sleeve 11 rotates, the gear ring 22, the pinion 23 and the above-mentioned tooth pattern cooperate to make the turntable 20 rotate at a speed lower than the rotation speed of the sleeve 11, so that there is a certain speed difference between the rotation speed of the blade 21 driven by the turntable 20 and the impeller 14, so as to better make the passing airflow get cross-mixing effect, and cooperate with the impeller 14 that continuously reciprocates left and right, further improve the mixing effect of the airflow returning through the air duct 19 and the airflow blown out by the hair dryer 6, and improve the interaction efficiency of the air temperature inside the shell 1.

[0038] In addition, in order to improve the diffusion efficiency of the airflow blown out by the air outlet 9 in the shell 1, a spoiler assembly is provided inside the air outlet 9, and the spoiler assembly includes a magnetic block 24. The magnetic block 24 is fixedly installed on the right outer wall of the blade 21, and a fixed shaft 25 is fixedly installed on the inner wall of the air outlet 9. The fixed shaft 25 passes through a guide plate 26, and the guide plate 26 is rotatably connected to the fixed shaft 25. One end of a spiral spring 27 is fixedly connected to the arc-shaped outer wall of the fixed shaft 25, and a magnetic sheet 28 is fixedly installed on the upper surface of the guide plate 26 on the side close to the sleeve 11.

[0039] In the embodiment of the present invention, the magnetic block 24 is only arranged on one blade 21 on the curved outer wall of the turntable 20, so as to reduce the adverse effect of too many magnetic blocks 24 on the swing of the guide plate 26. At the same time, the guide plate 26 is arranged in a rhombus shape, and the left end of the guide plate 26 is smaller than the right end. Specifically, the fixed shaft 25 in the guide plate 26 is arranged eccentrically, so that the guide plate 26 is more likely to be unstable in the airflow, thereby showing a swinging posture. In addition, a circular groove with a diameter larger than the outer diameter of the spiral spring 27 is opened on the side wall of the guide plate 26, and the other end of the spiral spring 27 is fixedly connected to the bottom inner surface of the circular groove. At the same time, the spiral spring 27 is sleeved on the curved outer wall of the fixed shaft 25, so that the guide plate 26 can always be stable. transmission effect, further, the magnetism of the magnetic sheet 28 is opposite to that of the magnetic block 24, so that there is a certain attraction between the magnetic block 24 and the magnetic sheet 28, and as the turntable 20 drives the blade 21 to rotate, the magnetic block 24 will attract the magnetic sheet 28 when it moves close to the magnetic sheet 28, thereby driving the left end of the guide plate 26 to deviate, causing the guide plate 26 to deflect around the fixed axis 25 as the rotation axis in the airflow, and due to the setting of the volute spring 27, the guide plate 26 is reset and swung, so that under the continuous rotation of the turntable 20, the guide plate 26 continues to swing up and down slightly, thereby increasing the diffusion area of ​​the airflow blown out from the air outlet 9, improving the influence of the airflow on the temperature balance efficiency of the air in the shell 1, and ensuring the safe use of the battery block 5.

[0040] In the present invention, when the battery block 5 is charged by the charging converter 2, the starting temperature value of the hair dryer 6 is pre-set. When the temperature inside the shell 1 reaches the above value, the central controller controls the hair dryer 6 to start blowing out a balanced airflow in the convection air duct 7 to maintain the stability of the air temperature in the shell 1 and ensure the safety of the battery block 5. At the same time, in order to improve the efficiency of the air temperature exchange in the shell 1, a reflux component is provided. Due to the different flow rates of the internal and external air flows, the air flow in the shell 1 is controlled and guided to generate a reflux through the air duct 19, and the impeller 14 is driven by the air flow to rotate, thereby generating a wave pattern. With the cooperation of the groove 18 and the guide bead 17, the slide bar 12 performs a continuous small reciprocating motion in the horizontal direction during the continuous rotation, thereby cooperating with the rotating impeller 14 to increase the mixing effect between the airflow blown out by the blower 6 and the airflow returned in the air duct 19, thereby accelerating the temperature exchange speed of the air in the shell 1, improving the efficiency of the temperature balance in the shell 1, and making the battery block 5 maintain a good working state more quickly, thereby extending the service life of the battery block 5. In addition, in order to better improve the mixing effect of the airflow returned in the air duct 19 and the airflow blown out by the blower 6, an idle mixing component is provided to cooperate with the gear ring 2 2. The pinion 23 and the tooth pattern above enable the turntable 20 to rotate at a speed lower than the rotation speed of the sleeve 11, so that there is a certain speed difference between the rotation speed of the blades 21 driven by the turntable 20 and the impeller 14, so as to better achieve the cross-mixing effect of the passing airflow, and cooperate with the impeller 14 that continuously reciprocates left and right to further improve the mixing effect of the airflow returning through the air duct 19 and the airflow blown out by the hair dryer 6, and improve the interaction efficiency of the air temperature inside the shell 1. Furthermore, in order to improve the diffusion efficiency of the airflow blown out by the air outlet 9 in the shell 1, a spoiler component is provided. The turntable 20 drives the blades 21 to rotate, so that the magnetic block 24 will attract the magnetic sheet 28 when it moves close to it, thereby causing the left end of the guide plate 26 to deviate, causing the guide plate 26 to deflect around the fixed axis 25 as the rotation axis in the airflow, and due to the setting of the spiral spring 27, the guide plate 26 is reset and swung, so that under the continuous rotation of the turntable 20, the guide plate 26 continues to swing up and down slightly, thereby increasing the diffusion area of ​​the airflow blown out from the air outlet 9, improving the effect of the airflow on the temperature balance efficiency of the air in the shell 1, and ensuring the safe use of the battery block 5.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A battery management and protection device, comprising a housing (1), a charging converter (2) being fixedly mounted on the inner wall of the housing (1), a positioning frame (3) being fixedly mounted on the inner wall of the housing (1), a positioning groove (4) being provided inside the positioning frame (3), a battery block (5) being fixedly mounted inside the positioning frame (3), a blower (6) being fixedly mounted on the inner wall of the housing (1), an output end of the blower (6) being fixedly connected to an air flow duct (7), a connecting pipe (8) being provided between the side wall of the positioning frame (3) and the air flow duct (7), and an air outlet (9) being fixedly mounted on the side wall of the positioning frame (3), characterized in that: A reflux component is arranged inside the air outlet head (9), and the reflux component comprises: A positioning sleeve (10), the inner wall of the air outlet head (9) is fixedly mounted with the positioning sleeve (10), a sleeve (11) is rotatably mounted at the center of the positioning sleeve (10), a sliding rod (12) is slidably connected to the inner wall of the sleeve (11), a limiting strip (13) is fixedly mounted on the arc-shaped outer wall of the sliding rod (12), and an impeller (14) is fixedly mounted on one end of the sliding rod (12) away from the sleeve (11); A fixing rod (15), the inner wall of the air outlet (9) being fixedly mounted with the fixing rod (15), a guide ring (16) being fixedly mounted at the center of the fixing rod (15), a guide bead (17) being fixedly mounted on the inner surface of the guide ring (16), and a wave groove (18) being formed on the arc-shaped outer wall of the slide rod (12); An air duct (19), wherein the inner wall of the air outlet head (9) is provided with an air duct (19); A circular hole matching the outer diameter of the sleeve (11) is provided at the center of the positioning sleeve (10), and a circular disc having a diameter larger than that of the central circular hole of the positioning sleeve (10) is provided at the right end of the sleeve (11). A through hole matching the outer diameter of the slide rod (12) is provided on the inner wall of the sleeve (11), and a limiting slide groove matching the size of the limiting strip (13) is provided on the inner surface of the through hole. The guide bead (17) is arranged inside the wave groove (18), and the wave groove (18) is arranged in a wave shape on the arc-shaped outer wall at the left end of the slide rod (12), and the wave groove (18) is connected end to end. The air duct (19) is arranged on the upper and lower sides of the air outlet (9), and the air duct (19) is arranged in a trumpet shape near the right end of the air outlet (9), and a bend is provided on the air duct (19) near the left end of the air outlet (9).

2. A battery management and protection device according to claim 1, characterized in that: The interiors of the connecting pipe (8) and the positioning frame (3) are hollow, and the connecting pipe (8) connects the air flow duct (7) and the internal cavity of the positioning frame (3).

3. A battery management and protection device according to claim 1, characterized in that: An idle mixing assembly is arranged outside the sleeve (11), and the idle mixing assembly comprises a rotating disk (20). The rotating disk (20) is rotatably mounted on the left outer wall of the positioning sleeve (10), and blades (21) are fixedly mounted on the arc-shaped outer wall of the rotating disk (20). A gear ring (22) is sleeved on the arc-shaped outer wall of the sleeve (11), and a pinion (23) is rotatably mounted on the inner wall of the rotating disk (20).

4. A battery management and protection device according to claim 3, characterized in that: The rotating disk (20) has an accommodating cavity formed inside, the gear ring (22) and the pinion (23) are both arranged inside the accommodating cavity, the pinion (23) meshes with the gear ring (22) to achieve transmission, and the accommodating cavity is arranged in a circular shape, and a tooth pattern that can mesh with the pinion (23) to achieve transmission is formed on the circular inner surface of the accommodating cavity.

5. A battery management and protection device according to claim 3, characterized in that: A spoiler assembly is arranged inside the air outlet head (9), and the spoiler assembly includes a magnetic block (24). The magnetic block (24) is fixedly mounted on the right outer wall of the blade (21). A fixed shaft (25) is fixedly mounted on the inner wall of the air outlet head (9). A guide plate (26) passes through the fixed shaft (25), and the guide plate (26) is rotatably connected to the fixed shaft (25). One end of a volute spring (27) is fixedly connected to the arc-shaped outer wall of the fixed shaft (25). A magnetic sheet (28) is fixedly mounted on the upper surface of the guide plate (26) on the side close to the sleeve (11).

6. A battery management and protection device according to claim 5, characterized in that: The guide plate (26) is arranged in a rhombus-like shape, and the left end of the guide plate (26) is smaller than the right end. The fixed shaft (25) in the guide plate (26) is arranged in an eccentric position. The magnetism of the magnetic sheet (28) is opposite to that of the magnetic block (24).

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