Lithium battery charger with over-temperature induction power-off protection

Abstract

The invention discloses a lithium battery charger with over-temperature induction power-off protection, and relates to the technical field of lithium batteries, the lithium battery charger comprises an outer shell and a charging module, the front surface of the outer shell is fixedly connected with a conductive plug pin, the end part of the conductive plug pin is provided with a butt joint groove, and the charging module is arranged in the outer shell. According to the lithium battery charger with the over-temperature induction power-off protection function, the temperature sensor is used for detecting the temperature of the core processor in real time, once the temperature sensor senses that the temperature of the core processor exceeds a set safety value, a driving assembly is triggered, a lead screw is controlled to rotate through a servo motor, and a movable block and a charging module are driven to translate; the improved lithium battery charger has an over-temperature induction power-off protection function, and power-off protection can be carried out when the charger is over-temperature, so that battery damage and accelerated aging of the charger are avoided, and meanwhile, slow charging speed or charging interruption caused by overheating is also avoided.

Description

Technical Field

[0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery charger with over-temperature induction power-off protection. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. They can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium battery chargers are charging devices designed for lithium batteries that can convert AC power into DC power and charge lithium batteries with appropriate voltage and current. This type of charger usually has an intelligent charging function that can adjust the charging current and voltage according to the battery's power and status to ensure safe and efficient charging of the battery.

[0003] During the charging process, the lithium battery charger will generate a certain amount of heat due to reasons such as power conversion and internal chemical reactions of the battery. This is a normal phenomenon. However, if the power cannot be cut off in time when the temperature is too high, the high temperature may cause chemical changes in the electrolyte and electrode materials inside the battery, thereby affecting the performance and life of the battery. In severe cases, it may even cause the battery to bulge, deform or explode. At the same time, long-term overheating will also accelerate the aging of the electronic components inside the charger and shorten its service life. In extreme cases, it will cause the circuit inside the charger to short-circuit or burn, causing safety accidents such as fire or electric shock, posing a threat to personnel and property, especially in crowded places such as homes or offices. This safety hazard is particularly serious. In addition, overheating of the charger may cause the charging speed to slow down or the charging to be interrupted, affecting the normal use of the user. Frequent overheating problems will reduce the user's satisfaction and trust in the product.

[0004] Therefore, it is urgent to improve this shortcoming. The present invention studies and improves the existing structure and shortcomings, and provides a lithium battery charger with over-temperature induction power-off protection. Summary of the invention

[0005] The object of the present invention is to provide a lithium battery charger with over-temperature induction power-off protection to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery charger with over-temperature induction power-off protection, comprising an outer shell and a charging module, the front side of the outer shell is fixedly connected to a conductive pin, and the end of the conductive pin is provided with a docking groove, the charging module is arranged inside the outer shell, and the back side of the charging module is fixedly connected to a spring data cable, one end of the spring data cable passes through the inner wall of the outer shell and extends to the outer wall of the outer shell, and one end of the spring data cable is fixedly connected to a power connection cable, and a protective component is arranged on the outer surface of the power connection cable, a driving component is arranged inside the outer shell, and a fixing rod is fixedly connected to the inner wall of the outer shell, and a cooling pipe is fixedly connected to the bottom end of the fixing rod, a heat dissipation fan is embedded in the top of the outer shell, and an exhaust hole is arranged at the bottom of the outer shell.

[0007] Furthermore, the charging module includes a core processor, a connector and a temperature sensor. The front of the core processor is provided with a connector, and the outer surface of the core processor is fixedly mounted with a temperature sensor.

[0008] Furthermore, the core processor forms a plug-in structure with a conductive pin through a connector and a docking slot, and the outer dimensions of the connector are completely consistent with the inner dimensions of the docking slot, and the outer surface of the connector is in contact with the inner surface of the docking slot.

[0009] Furthermore, the protection component includes an annular groove seat and a mounting groove, the annular groove seat is fixedly mounted on the back side of the outer shell, and a mounting groove is provided on a side of the annular groove seat away from the outer shell, and the mounting grooves are arranged in an annular array.

[0010] Furthermore, the protection component also includes an insulating spring and an insulating rod. The insulating spring is arranged on the inner side of the mounting groove, and one end of the insulating spring is fixedly connected to the inner wall of the mounting groove, and the other end of the insulating spring is fixedly connected to the insulating rod.

[0011] Furthermore, the protection component also includes a protection head, which is arranged on the outer surface of the power connection line, and the side of the protection head close to the annular groove seat is fixedly connected to the insulating rod.

[0012] Furthermore, the protective head is connected to the annular groove seat through an insulating spring and an insulating rod, and one end of the insulating rod is located on the inner side of the mounting groove, the outer surface of the insulating rod is fitted with the inner surface of the mounting groove, and the shape and size of the insulating rod match the shape and size of the mounting groove.

[0013] Furthermore, the drive assembly includes a servo motor, a screw and a movable block, the servo motor is fixedly installed inside the outer shell, and the output shaft of the servo motor is fixedly connected to the screw through a coupling, and one end of the screw is movably connected to the inner wall of the outer shell through a bearing, the outer wall of the screw is threadedly connected to the movable block, and the top of the movable block is fixedly connected to the bottom of the core processor.

[0014] Furthermore, the drive assembly also includes a guide slot block, which is fixedly mounted on the inner bottom wall of the outer shell, and there are two guide slot blocks, which are symmetrically arranged on the left and right sides of the movable block with the center line of the screw as the symmetry axis.

[0015] Furthermore, the movable block forms a sliding structure with the outer shell through the guide groove block, and the outer wall of the movable block fits with the inner wall of the guide groove block, and the movable block slides along the inner wall of the guide groove block.

[0016] The present invention provides a lithium battery charger with over-temperature induction power-off protection, which has the following beneficial effects:

[0017] 1. The present invention is provided with a temperature sensor, and uses the temperature sensor to detect the temperature of the core processor in real time. Once it senses that the temperature of the core processor exceeds the set safety value, the drive component is triggered, and the servo motor controls the lead screw to rotate, drives the movable block and the charging module to translate, and pulls the connector out of the docking slot to achieve power-off protection. The improved lithium battery charger has an over-temperature sensing power-off protection function, which can perform power-off protection when the charger is over-temperature, thereby avoiding battery damage and accelerated aging of the charger, which helps to increase the service life of the battery and charger, and also avoids slow charging or charging interruption due to overheating.

[0018] 2. The present invention is provided with a cooling pipe, which can be shifted with the power-off of the charging module and fit with it to cool the core processor. It cooperates with the heat dissipation fan to form a flowing wind to blow to the core processor, and discharges the hot air originally accumulated in the outer shell from the bottom exhaust hole, further improving the cooling effect, so that the charging module can quickly restore the safe temperature and continue charging work, which helps to improve the charging efficiency of the charger.

[0019] 3. The present invention is provided with a protective component, and the protective component is composed of an annular groove seat, a mounting groove, an insulating spring, an insulating rod, and a protective head. During the charging process, if a person accidentally pulls the power connection line excessively, the protective head will be pulled, and the insulating rod will be pulled outward along the mounting groove, thereby driving the insulating spring to stretch and deform to buffer the pulling force, thereby effectively protecting the power connection line and preventing the connection position between the power connection line and the spring data line from being easily broken or damaged due to external force, which helps to improve and ensure the charging stability of the charger, so that the lithium battery can be charged more stably and reduce abnormal power outages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of a lithium battery charger with over-temperature induction power-off protection of the present invention;

[0021] Figure 2 A schematic diagram of the cross-sectional structure of an outer shell of a lithium battery charger with over-temperature induction power-off protection according to the present invention;

[0022] Figure 3 This is a schematic diagram of the disassembled structure of the outer shell of a lithium battery charger with over-temperature induction power-off protection according to the present invention;

[0023] Figure 4 A schematic diagram of the connection structure of a charging module-driving assembly of a lithium battery charger with over-temperature induction power-off protection according to the present invention;

[0024] Figure 5 It is a schematic cross-sectional view of the annular groove seat of a lithium battery charger with over-temperature induction power-off protection according to the present invention;

[0025] Figure 6 The present invention is a lithium battery charger with over-temperature induction power-off protection Figure 5 A schematic diagram of the enlarged structure in the middle.

[0026] In the figure: 1. outer shell; 2. conductive pin; 3. docking slot; 4. charging module; 401. core processor; 402. connector; 403. temperature sensor; 5. spring data cable; 6. power cable; 7. protection assembly; 701. annular groove seat; 702. mounting groove; 703. insulating spring; 704. insulating rod; 705. protection head; 8. drive assembly; 801. servo motor; 802. lead screw; 803. movable block; 804. guide groove block; 9. fixing rod; 10. cooling pipe; 11. cooling fan; 12. exhaust hole. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figure 1-Figure 4 As shown, a lithium battery charger with over-temperature induction power-off protection includes an outer shell 1 and a charging module 4. A conductive plug 2 is fixedly connected to the front of the outer shell 1, and a docking groove 3 is opened at the end of the conductive plug 2. The charging module 4 is arranged inside the outer shell 1, and a spring data line 5 is fixedly connected to the back of the charging module 4. The charging module 4 includes a core processor 401, a connector 402 and a temperature sensor 403. The connector 402 is arranged on the front of the core processor 401, and the temperature sensor 403 is fixedly installed on the outer surface of the core processor 401. The core processor 401 forms a plug-in structure with the conductive plug 2 through the connector 402 and the docking slot 3, and the outer size of the connector 402 is completely consistent with the inner size of the docking slot 3, and the outer surface of the connector 402 is in contact with the inner surface of the docking slot 3. One end of the spring data line 5 passes through the inner wall of the outer shell 1 and extends to the outer wall of the outer shell 1. One end of the spring data line 5 is fixedly connected to the power connection line 6, and the outer surface of the power connection line 6 is provided with a protective component 7. The outer shell 1 is provided with a drive component 8, and the drive component 8 includes a servo motor 80 1. A screw rod 802 and a movable block 803. The servo motor 801 is fixedly installed inside the outer shell 1, and the output shaft of the servo motor 801 is fixedly connected to the screw rod 802 through a coupling, and one end of the screw rod 802 is movably connected to the inner wall of the outer shell 1 through a bearing, and the outer wall of the screw rod 802 is threadedly connected to the movable block 803, and the top of the movable block 803 is fixedly connected to the bottom of the core processor 401. The drive component 8 also includes a guide groove block 804, which is fixedly installed on the inner bottom wall of the outer shell 1, and the number of the guide groove blocks 804 is Two, two guide groove blocks 804 are symmetrically arranged on the left and right sides of the movable block 803 with the center line of the screw rod 802 as the symmetry axis, the movable block 803 forms a sliding structure with the outer shell 1 through the guide groove block 804, and the outer wall of the movable block 803 is in contact with the inner wall of the guide groove block 804, and the movable block 803 slides along the inner wall of the guide groove block 804, and the inner wall of the outer shell 1 is fixedly connected with a fixing rod 9, and the bottom end of the fixing rod 9 is fixedly connected with a cooling pipe 10, a heat dissipation fan 11 is embedded in the top of the outer shell 1, and an exhaust hole 12 is opened at the bottom of the outer shell 1;

[0029] The specific operation is as follows: the user inserts the conductive plug 2 into the power socket, the charger is powered on, and the lithium battery charging starts. During this process, the temperature sensor 403 detects the temperature of the core processor 401 in real time. Once any temperature sensor 403 senses that the temperature exceeds the set safety value, the power-off protection mechanism is triggered, that is, the servo motor 801 controls the screw rod 802 to rotate, and the guide groove block 804 limits the movement trajectory of the movable block 803, so that the movable block 803 can translate under the rotation drive of the screw rod 802, thereby driving the charging module 4 to translate, so that the connector 402 is pulled out of the docking slot 3 to achieve power-off protection. In this process, as the charging module 4 translates, the charging module 4 gradually fits with the cooling tube 10. After the power is turned off, the cooling tube 10 can be used to cool the core processor 401. At the same time, the heat dissipation fan 11 is started to form a flowing wind blowing toward the core processor 401. The heat dissipation fan 11 can introduce external air into the outer shell 1, and the hot air originally stored in the outer shell 1 is discharged from the bottom exhaust hole 12, further improving the cooling effect, so that the charging module 4 can quickly restore the safe temperature and resume the charging work. During the cooling process, the temperature sensor 403 detects the temperature of each area of ​​the core processor 401 in real time. When the charging module 4 is cooled to the target temperature, the servo motor 801 is restarted, driving the screw 802 to rotate in the opposite direction, driving the movable block 803 and the core processor 401 back to the initial position, reinserting the connector 402 into the docking slot 3, and resuming the charging work. Through the above design, the power-off protection can be performed when the charger is overheated, thereby avoiding battery damage and accelerated aging of the charger, which helps to increase the service life of the battery and charger and reduce unnecessary waste of resources.

[0030] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, one end of the spring data line 5 passes through the inner wall of the outer shell 1 and extends to the outer wall of the outer shell 1, and one end of the spring data line 5 is fixedly connected to the power connection line 6, and the outer surface of the power connection line 6 is provided with a protective component 7, the protective component 7 includes an annular groove seat 701 and a mounting groove 702, the annular groove seat 701 is fixedly installed on the back of the outer shell 1, and the side of the annular groove seat 701 away from the outer shell 1 is provided with a mounting groove 702, and the mounting grooves 702 are arranged in a circular array, the protective component 7 also includes an insulating spring 703 and an insulating rod 704, the insulating spring 703 is arranged on the inner side of the mounting groove 702, and one end of the insulating spring 703 The insulating rod 704 is fixedly connected to the inner wall of the mounting groove 702, and the other end of the insulating spring 703 is fixedly connected to the insulating rod 704. The protective assembly 7 also includes a protective head 705, which is sleeved on the outer surface of the power connection line 6, and the side of the protective head 705 close to the annular groove seat 701 is fixedly connected to the insulating rod 704. The protective head 705 is connected to the annular groove seat 701 through the insulating spring 703 and the insulating rod 704, and one end of the insulating rod 704 is located on the inner side of the mounting groove 702, the outer surface of the insulating rod 704 is in contact with the inner surface of the mounting groove 702, and the shape and size of the insulating rod 704 match the shape and size of the mounting groove 702.

[0031] The specific operation is as follows. During the charging process, if someone accidentally pulls the power connection line 6 and exceeds the point where the power connection line 6 has been stretched straight, the protective head 705 will be pulled and the insulating rod 704 will be pulled outward along the mounting groove 702, causing the insulating spring 703 to stretch and deform. At the same time, the power connection line 6 accumulated on the inner side of the annular groove seat 701 will also be straightened slightly, thereby buffering the pulling force. Through the coordinated use of the above-mentioned structure, the power connection line 6 can be effectively protected, and the connection position between the power connection line 6 and the spring data line 5 can be prevented from being easily broken or damaged due to external force, which helps to improve and ensure the charging stability of the charger, so that the lithium battery can be charged more stably and reduce abnormal power outages.

[0032] In summary, combined Figure 1-Figure 6As shown, the working principle of the lithium battery charger with over-temperature sensing power-off protection is as follows: first, the user inserts the conductive plug 2 into the power socket, the charger is powered on, and the lithium battery charging work starts. During this process, the temperature sensor 403 detects the temperature of the core processor 401 in real time. Once any temperature sensor 403 senses that the temperature exceeds the set safety value, the servo motor 801 controls the screw rod 802 to rotate, drives the movable block 803 and the charging module 4 to translate, and pulls the connector 402 out of the docking slot 3 to achieve power-off protection. After the power is off, the cooling pipe 10 is used to cool the core processor 401. At the same time, the heat dissipation fan 11 is started to form a flowing wind blowing towards the core processor 401, and the hot air originally accumulated in the outer shell 1 is discharged from the bottom exhaust hole 12 to promote cooling. After the charging module 4 cools to the target temperature, the servo motor 801 drives the screw rod 802 to rotate in the opposite direction, drives the movable block 803 and the core processor 401 back to the initial position, and reinserts the connector 402 into the docking slot 3 to resume charging. In addition, during the charging process, if someone accidentally pulls the power connection cable 6 beyond the point where the power connection cable 6 has been stretched straight, the protective head 705 will be pulled, and the insulating rod 704 will be pulled outward along the mounting groove 702, causing the insulating spring 703 to stretch and deform, thereby buffering the pulling force.

[0033] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A lithium battery charger with over-temperature induction power-off protection, comprising an outer shell (1) and a charging module (4), characterized in that: The front side of the outer shell (1) is fixedly connected with a conductive plug (2), and the end of the conductive plug (2) is provided with a docking groove (3); the charging module (4) is arranged inside the outer shell (1), and the back side of the charging module (4) is fixedly connected with a spring data line (5); one end of the spring data line (5) passes through the inner wall of the outer shell (1) and extends to the outer wall of the outer shell (1), and one end of the spring data line (5) is fixedly connected with a power connection line (6), and a protective component (7) is provided on the outer surface of the power connection line (6); a driving component (8) is provided inside the outer shell (1), and a fixing rod (9) is fixedly connected to the inner wall of the outer shell (1), and a cooling pipe (10) is fixedly connected to the bottom end of the fixing rod (9); a heat dissipation fan (11) is embedded in the top of the outer shell (1), and an exhaust hole (12) is provided at the bottom of the outer shell (1).

2. A lithium battery charger with over-temperature induction power-off protection according to claim 1, characterized in that: The charging module (4) comprises a core processor (401), a connector (402) and a temperature sensor (403); the connector (402) is arranged on the front of the core processor (401), and the temperature sensor (403) is fixedly mounted on the outer surface of the core processor (401).

3. A lithium battery charger with over-temperature induction power-off protection according to claim 2, characterized in that: The core processor (401) forms a plug-in structure with the conductive plug (2) via a connector (402) and a docking slot (3), and the external dimensions of the connector (402) are completely consistent with the internal dimensions of the docking slot (3), and the outer surface of the connector (402) is in contact with the inner surface of the docking slot (3).

4. A lithium battery charger with over-temperature induction power-off protection according to claim 1, characterized in that: The protection component (7) comprises an annular groove seat (701) and a mounting groove (702); the annular groove seat (701) is fixedly mounted on the back side of the outer shell (1); a mounting groove (702) is provided on a side of the annular groove seat (701) away from the outer shell (1); and the mounting grooves (702) are arranged in an annular array.

5. A lithium battery charger with over-temperature induction power-off protection according to claim 1, characterized in that: The protection component (7) also includes an insulating spring (703) and an insulating rod (704); the insulating spring (703) is arranged on the inner side of the mounting groove (702), and one end of the insulating spring (703) is fixedly connected to the inner wall of the mounting groove (702), and the other end of the insulating spring (703) is fixedly connected to the insulating rod (704).

6. A lithium battery charger with over-temperature induction power-off protection according to claim 5, characterized in that: The protection assembly (7) further comprises a protection head (705), wherein the protection head (705) is sleeved on the outer surface of the power connection line (6), and a side of the protection head (705) close to the annular groove seat (701) is fixedly connected to the insulating rod (704).

7. A lithium battery charger with over-temperature induction power-off protection according to claim 6, characterized in that: The protective head (705) is connected to the annular groove seat (701) via an insulating spring (703) and an insulating rod (704), and one end of the insulating rod (704) is located on the inner side of the mounting groove (702), the outer surface of the insulating rod (704) is in contact with the inner surface of the mounting groove (702), and the shape and size of the insulating rod (704) match the shape and size of the mounting groove (702).

8. A lithium battery charger with over-temperature induction power-off protection according to claim 2, characterized in that: The drive assembly (8) comprises a servo motor (801), a screw rod (802) and a movable block (803); the servo motor (801) is fixedly mounted inside the outer shell (1); the output shaft of the servo motor (801) is fixedly connected to the screw rod (802) via a coupling; one end of the screw rod (802) is movably connected to the inner wall of the outer shell (1) via a bearing; the outer wall of the screw rod (802) is threadedly connected to the movable block (803); and the top of the movable block (803) is fixedly connected to the bottom of the core processor (401).

9. A lithium battery charger with over-temperature induction power-off protection according to claim 8, characterized in that: The driving assembly (8) also includes a guide slot block (804), which is fixedly mounted on the inner bottom wall of the outer shell (1). There are two guide slot blocks (804), and the two guide slot blocks (804) are symmetrically arranged on the left and right sides of the movable block (803) with the center line of the screw rod (802) as the symmetry axis.

10. A lithium battery charger with over-temperature induction power-off protection according to claim 9, characterized in that: The movable block (803) forms a sliding structure with the outer shell (1) through the guide groove block (804), and the outer wall of the movable block (803) fits the inner wall of the guide groove block (804), and the movable block (803) slides along the inner wall of the guide groove block (804).

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