Lithium battery charger capable of automatically adjusting charging current according to temperature

Abstract

The utility model discloses a lithium battery charger capable of automatically adjusting charging current according to temperature, which comprises an upper shell and a lower shell, the upper shell and the lower shell are symmetrically arranged up and down, the contact surfaces of the upper shell and the lower shell are attached, and four corners of the inner wall of the lower shell are respectively provided with a support assembly. According to the lithium battery charger capable of automatically adjusting the charging current according to the temperature, it is guaranteed that a battery pack can be really fully charged, the service life of the battery pack after being fully charged is prolonged, the energy storage effect of the battery is protected, the temperature monitoring module monitors the temperature when the battery pack is charged, and the battery is effectively protected against the overheating condition; the battery is safely charged through the charger, so that safe use of the battery is guaranteed, the service life of the battery is prolonged, the situation that the charger is damaged due to reverse connection of main electrodes of the electrode reverse connection module is avoided, and the integrated module and the line connection module mainly have the function of circuit integrated connection.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery chargers, in particular to a lithium battery charger which automatically adjusts charging current according to temperature. Background Art

[0002] A lithium battery charger is specifically designed to charge lithium-ion batteries. With its high energy density, compact size, and light weight, it's a crucial rechargeable battery component standard in modern products. Lithium battery chargers can safely and quickly charge lithium batteries while minimizing leakage.

[0003] Regarding the above-mentioned related technologies, there are certain deficiencies when using them: lithium battery chargers have strong adaptability when charging, and lithium battery chargers usually have high control precision, and can charge lithium-ion batteries with constant current and constant voltage. Since they cannot accurately judge the charging status of the battery, the charging speed is fast but the battery temperature rises rapidly. This situation may cause battery damage and affect the energy storage effect.

[0004] Therefore, the utility model provides a lithium battery charger which automatically adjusts the charging current according to the temperature to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a lithium battery charger that automatically adjusts the charging current according to the temperature, thereby solving the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lithium battery charger that automatically adjusts charging current according to temperature, comprising an upper shell and a lower shell, the upper shell and the lower shell being symmetrically arranged in a vertical direction and having contact surfaces in contact with each other, support assemblies being installed at the four corners of the inner wall of the lower shell, the outer walls of several of the support assemblies being installed with the same adjustment assembly, and a fixing assembly being installed on the bottom wall of the lower shell;

[0007] The adjustment component includes a circuit board, the inner wall of the circuit board is fitted with the outer wall of the support component, a control assembly module is installed in the middle of the right side of the top wall of the circuit board, a radiator is installed on the right side of the top wall of the circuit board and in front of and behind the control assembly module, several integrated modules are installed on the right side of the top wall of the circuit board and on the left side of the control assembly module, several line connection modules are installed in the middle of the top wall of the circuit board and on the left side of the integrated module, a temperature monitoring module is installed on the upper left part of the top wall of the circuit board, a current control module is installed on the top wall of the circuit board and in front of the temperature monitoring module, a voltage control module is installed on the top wall of the circuit board and in front of the current control module, a power monitoring module is installed on the top wall of the circuit board and in front of the voltage control module, and an anti-electrode reverse connection module is installed on the top wall of the circuit board and in front of the power monitoring module.

[0008] Through the above technical solution, the setting of the regulating component can adjust the current and voltage according to the temperature of the battery pack and the internal power reserve.

[0009] Furthermore, the circuit board is located inside the lower shell, and the circuit board and the control assembly module are electrically connected to the radiator, integrated module, line connection module, temperature monitoring module, current control module, voltage control module, power monitoring module, and anti-reverse electrode module.

[0010] Through the above technical solution, the control assembly module can control the radiator, integrated module, line connection module, temperature monitoring module, current control module, voltage control module, power monitoring module, and anti-reverse electrode module to work together.

[0011] Furthermore, the left and right parts of the adjacent sides of the upper shell and the lower shell are provided with card slots, and the inner walls of the two card slots on the right side are card-mounted with the same charging head, and the charging head is electrically connected to the circuit board. The inner walls of the two card slots on the left side are card-mounted with the same plug connector, and the plug connector is electrically connected to the circuit board. The outer walls of the upper shell and the lower shell are provided with heat dissipation ports.

[0012] Through the above technical solution, the card slot is mainly set to plug and install the charging head and the plug connector.

[0013] Furthermore, the support assembly includes several bases, several of the bases are evenly fixed on the four corners of the inner wall of the lower shell, several of the top walls of the bases are installed with micro dampers, several of the tops of the micro dampers are fixedly installed with support seats, several of the sides adjacent to the bases and the support seats and located outside the micro dampers are installed with buffer springs, and several of the tops of the support seats are fixedly installed with studs.

[0014] Through the above technical solution, the micro damper and the buffer spring cooperate with each other to buffer and absorb the vibration of the circuit board.

[0015] Furthermore, through-holes are opened at the four corners of the top wall of the circuit board and at the positions corresponding to the studs, the bottom wall of the circuit board is in contact with the top wall of the support seat, several inner walls of the through-holes are in contact with the outer walls of the studs, several outer walls of the studs are screwed with screw sleeves, and the bottom ends of several screw sleeves are in contact with the top wall of the circuit board.

[0016] Through the above technical solution, the screw sleeve and the stud are screwed together to fix the circuit board.

[0017] Furthermore, the fixing assembly includes four insertion rods, the bottom wall of the lower shell is evenly provided with insertion openings, the top wall of the circuit board and the positions corresponding to the insertion openings are provided with through openings, the inner top wall of the upper shell and the positions corresponding to the through openings are provided with screw grooves, the outer walls of the four insertion rods are all fitted with the corresponding insertion openings and inner walls of the through openings, the top ends of the four insertion rods are all provided with threaded lines, the four threaded lines are all screwed and fixed to the corresponding inner walls of the screw grooves, and the bottom ends of the four insertion rods are fixed with hexagonal blocks.

[0018] Through the above technical solution, the lower shell and the upper shell can be installed and fixed under the mutual cooperation of the inserted rod, the thread line and the screw groove.

[0019] Furthermore, the inner top wall of the upper shell is equipped with reinforcing ribs.

[0020] Through the above technical solution, the reinforcing ribs can mainly improve the internal strength of the upper shell. Beneficial effects

[0021] The utility model provides a lithium battery charger that automatically adjusts the charging current according to the temperature. Compared with the existing technology, it has the following advantages:

[0022] (1) The lithium battery charger that automatically adjusts the charging current according to the temperature senses the remaining power of the battery pack through the power monitoring module. The control assembly module controls the current control module, the voltage control module and the radiator to control the charging current and voltage according to the remaining power. The charging current decreases as the battery power increases. Through the above charging current control, it is ensured that the battery pack can be fully charged, the use time of the battery pack after it is fully charged is extended, and the energy storage effect of the battery is protected. The temperature monitoring module monitors the temperature of the battery pack during charging and effectively protects the battery from overheating. The current control module and the voltage control module monitor the temperature changes of the battery pack during charging through the temperature monitoring module, automatically adjust the appropriate output current and voltage, and safely charge the battery through the charger, thereby ensuring the safe use of the battery and improving the battery life. The anti-electrode reverse connection module mainly prevents the charger from being damaged due to the reverse connection of the electrode. The integrated module and the line connection module mainly have the function of circuit integration connection.

[0023] (2) The lithium battery charger that automatically adjusts the charging current according to the temperature, drives the hexagonal block and the insertion rod to rotate by a tool, the thread line is disengaged from the screw connection state with the screw groove, the insertion rod is disengaged from the contact with the insertion port and the inner wall of the through port, the lower shell and the upper shell are opened to inspect and repair the adjustment component, the screw sleeve is rotated to disengage from the screw connection state with the stud, the movable circuit board is taken out from the inside of the lower shell and drives the stud to disengage from the through port, the reinforcement ribs will improve the support and strength of the upper shell, each time the charger is taken up and placed, the circuit board will vibrate, when the circuit board is vibrated, it will drive the support seat to compress the micro damper and buffer spring, the vibration generated is used for energy absorption and buffering to prevent the circuit board from being damaged by desoldering due to vibration, the base mainly has a supporting role for the micro damper and buffer spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a right side view of the external structure of the utility model;

[0025] Figure 2 It is a left view of the external structure of the utility model;

[0026] Figure 3 This is an exploded view of the internal structure of the fixing assembly of the present utility model;

[0027] Figure 4 This is the main view of the internal structure of the utility model;

[0028] Figure 5 It is a schematic diagram of the external structure of the adjustment component of the utility model.

[0029] In the figure, 1 is the lower shell; 2 is the upper shell; 3 is the plug connector; 4 is the charging head; 5 is the heat dissipation port; 6 is the card slot; 7 is the adjustment component; 71 is the circuit board; 72 is the heat sink; 73 is the control assembly module; 74 is the temperature monitoring module; 75 is the current control module; 76 is the voltage control module; 77 is the power monitoring module; 78 is the anti-electrode reverse connection module; 79 is the integrated module; 710 is the line connection module; 8 is the support component; 81 is the through-port; 82 is the screw sleeve; 83 is the base; 84 is the micro damper; 85 is the buffer spring; 86 is the support seat; 87 is the stud; 9 is the fixing component; 91 is the insertion rod; 92 is the thread line; 93 is the reinforcement rib; 94 is the screw groove; 95 is the through-port; 96 is the insertion port; 97 is the hexagonal block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0031] See also Figure 1-5 A lithium battery charger that automatically adjusts charging current according to temperature includes an upper shell 2 and a lower shell 1. The upper shell 2 and the lower shell 1 are symmetrically arranged in a vertical direction and the contact surfaces are in contact with each other. Support components 8 are installed at the four corners of the inner wall of the lower shell 1. The outer walls of several support components 8 are all equipped with the same adjustment component 7. The bottom wall of the lower shell 1 is equipped with a fixing component 9.

[0032] The adjustment component 7 includes a circuit board 71, the inner wall of the circuit board 71 is fitted with the outer wall of the support component 8, a control assembly module 73 is installed in the middle of the right side of the top wall of the circuit board 71, a radiator 72 is installed on the right side of the top wall of the circuit board 71 and in front of and behind the control assembly module 73, a number of integrated modules 79 are installed on the right side of the top wall of the circuit board 71 and on the left side of the control assembly module 73, a number of line connection modules 710 are installed in the middle of the top wall of the circuit board 71 and on the left side of the integrated module 79, a temperature monitoring module 74 is installed on the upper left side of the top wall of the circuit board 71, and a current monitoring module 74 is installed on the top wall of the circuit board 71 and in front of the temperature monitoring module 74 The control module 75 and the voltage control module 76 are installed on the top wall of the circuit board 71 and in front of the current control module 75. The power monitoring module 77 is installed on the top wall of the circuit board 71 and in front of the voltage control module 76. The anti-electrode reverse connection module 78 is installed on the top wall of the circuit board 71 and in front of the power monitoring module 77. The circuit board 71 is located inside the lower housing 1. The circuit board 71 and the control assembly module 73 are electrically connected to the radiator 72, the integrated module 79, the line connection module 710, the temperature monitoring module 74, the current control module 75, the voltage control module 76, the power monitoring module 77, and the anti-electrode reverse connection module 78.

[0033] In the embodiment of the present invention, the purpose of this setting is that the adjustment component 7 can monitor the remaining power inside the battery pack in real time through the mutual cooperation of its various modules, and automatically adjust the voltage and current of appropriate sizes according to the temperature and remaining power of the battery pack during charging, so that the battery pack can be used safely during charging, the service life of the battery can be improved, and the energy storage effect of the battery can be maintained. Example

[0034] See also Figure 1-5, this embodiment provides a technical solution based on the first embodiment: the left and right parts of the adjacent sides of the upper shell 2 and the lower shell 1 are provided with card slots 6, the inner walls of the two card slots 6 on the right are card-mounted with the same charging head 4, and the charging head 4 is electrically connected to the circuit board 71, the inner walls of the two card slots 6 on the left are card-mounted with the same plug connector 3, and the plug connector 3 is electrically connected to the circuit board 71, the outer walls of the upper shell 2 and the lower shell 1 are provided with heat dissipation 5, the support assembly 8 includes a plurality of bases 83, a plurality of bases 83 are evenly fixed on the four corners of the inner wall of the lower shell 1, a plurality of micro dampers 84 are installed on the top walls of the bases 83, a plurality of micro dampers 84 are fixedly installed with support seats 86 on the top, a plurality of bases 83 and support seats 86 are adjacent to the side and are located outside the micro damper 84. A buffer spring 85 is installed, and a plurality of studs 87 are fixed on the top of the support seats 86. The circuit board 7 1 The four corners of the top wall and the positions corresponding to the studs 87 are all provided with through-holes 81. The bottom wall of the circuit board 71 is fitted with the top wall of the support seat 86. The inner walls of several through-holes 81 are fitted with the outer walls of the studs 87. The outer walls of several studs 87 are all screwed with screw sleeves 82. The bottom ends of several screw sleeves 82 are all in contact with the top wall of the circuit board 71. The fixing component 9 includes four insertion rods 91. The bottom wall of the lower shell 1 is evenly provided with insertion holes 96. The top wall of the circuit board 71 and the corresponding insertion holes Through-holes 95 are provided at the positions of the openings 96, and screw grooves 94 are provided at the inner top wall of the upper shell 2 at the positions corresponding to the through-holes 95. The outer walls of the four insertion rods 91 are fitted with the corresponding insertion holes 96 and the inner walls of the through-holes 95. The tops of the four insertion rods 91 are provided with screw threads 92, which are screwed and fixed to the inner walls of the corresponding screw grooves 94. The bottom ends of the four insertion rods 91 are fixed with hexagonal blocks 97, and the inner top wall of the upper shell 2 is installed with reinforcing ribs 93.

[0035] In the embodiment of the present utility model, the purpose of this arrangement is that the arrangement of the heat dissipation port 5 and the cooperation of the radiator 72 can provide a good heat dissipation effect for the entire device. Through the arrangement of the support assembly 8, the vibrations received by the circuit board 71 and each control module during use of the charger can be buffered and energy absorbed, thereby preventing damage to the circuit board 71 and each control module, which would affect the normal use of the entire charger.

[0036] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

[0037] During operation, when the lithium battery pack needs to be charged, first plug it into the battery charging port through the active plug connector 3, and then plug the charging head 4 into the power board to power on. The entire charger is officially enabled and powered on. The power monitoring module 77 senses the remaining power of the battery pack and monitors its power in real time. The control assembly module 73 controls the current control module 75, the voltage control module 76 and the radiator 72 according to the remaining power monitored by the power monitoring module 77 to control the charging current and voltage. When the battery pack power is detected to be less than 10%, the trickle charging mode is adopted. When the battery pack power is detected to be higher than 10% and lower than 40%, the pre-charging mode is adopted. When the battery pack power is detected to be higher than 40% and lower than 40%, the pre-charging mode is adopted. When the battery level is lower than 85%, a constant current charging mode is adopted. When it is detected that the battery level is higher than 85% and lower than 98%, a constant voltage charging mode is adopted. The charging current decreases from the beginning as the battery level increases. When the charging current drops to the set cut-off charging current value, the control assembly module 73 controls the current control module 75 and the voltage control module 76 to stop working and end charging. Through the above charging current control, it is ensured that the battery pack can be fully charged, the use time of the battery pack after being fully charged is extended, and the energy storage effect of the battery is protected. The temperature monitoring module 74 monitors the temperature of the battery pack during charging to effectively protect the battery from overheating. The current control mode The block 75 and the voltage control module 76 monitor the temperature changes of the battery pack when charging through the temperature monitoring module 74 and automatically adjust the appropriate output current and voltage, and charge the battery safely through the charger, thereby ensuring the safe use of the battery and improving the battery life. The anti-electrode reverse connection module 78 mainly prevents the charger from being damaged by the reverse connection of the electrode. The integration module 79 and the line connection module 710 mainly have the function of circuit integration connection. When the entire charger is disassembled and repaired, the hexagonal block 97 and the insertion rod 91 are rotated by the tool, so that the thread line 92 is disengaged from the screw connection state with the screw groove 94, so that the insertion rod 91 is disengaged from the contact with the inner wall of the insertion port 96 and the through port 95, and then Open the lower shell 1 and the upper shell 2 to inspect and repair the adjustment component 7. Turn the screw sleeve 82 to disengage it from the screw connection with the stud 87. The circuit board 71 can be moved to remove it from the inside of the lower shell 1, thereby driving the stud 87 to disengage from the through-hole 81. The reinforcing ribs 93 will increase the support and strength of the upper shell 2. When using the charger, each time you take it or put it down, the circuit board 71 will vibrate. When the circuit board 71 is vibrated, it will drive the support seat 86 to compress the micro damper 84 and the buffer spring 85. The vibration generated will absorb energy and buffer it to prevent the circuit board 71 from being damaged by desoldering due to vibration. The base 83 mainly supports the micro damper 84 and the buffer spring 85.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery charger that automatically adjusts charging current according to temperature, comprising an upper housing (2) and a lower housing (1), characterized in that: The upper shell (2) and the lower shell (1) are symmetrically arranged in the upper and lower parts and the contact surfaces are in contact with each other. The four corners of the inner wall of the lower shell (1) are all installed with support components (8). The outer walls of several support components (8) are all installed with the same adjustment component (7). The bottom wall of the lower shell (1) is installed with a fixing component (9). The regulating assembly (7) includes a circuit board (71), the inner wall of the circuit board (71) is fitted with the outer wall of the supporting assembly (8), a control assembly module (73) is installed in the middle of the right side of the top wall of the circuit board (71), a radiator (72) is installed on the right side of the top wall of the circuit board (71) and in front of and behind the control assembly module (73), a plurality of integrated modules (79) are installed on the right side of the top wall of the circuit board (71) and in the left side of the control assembly module (73), and a plurality of line connection modules are installed in the middle of the top wall of the circuit board (71) and in the left side of the integrated module (79). Block (710), a temperature monitoring module (74) is installed on the upper left portion of the top wall of the circuit board (71), a current control module (75) is installed on the top wall of the circuit board (71) and in front of the temperature monitoring module (74), a voltage control module (76) is installed on the top wall of the circuit board (71) and in front of the current control module (75), a power monitoring module (77) is installed on the top wall of the circuit board (71) and in front of the voltage control module (76), and an anti-electrode reverse connection module (78) is installed on the top wall of the circuit board (71) and in front of the power monitoring module (77).

2. A lithium battery charger that automatically adjusts charging current according to temperature according to claim 1, characterized in that: The circuit board (71) is located inside the lower housing (1), and the circuit board (71) and the control assembly module (73) are electrically connected to the radiator (72), the integrated module (79), the line connection module (710), the temperature monitoring module (74), the current control module (75), the voltage control module (76), the power monitoring module (77), and the electrode reverse connection prevention module (78).

3. The lithium battery charger that automatically adjusts charging current according to temperature according to claim 1, characterized in that: The left and right sides of the adjacent sides of the upper shell (2) and the lower shell (1) are both provided with card slots (6); the inner walls of the two card slots (6) on the right side are card-mounted with a same charging head (4); the charging head (4) is electrically connected to the circuit board (71); the inner walls of the two card slots (6) on the left side are both card-mounted with a same plug connector (3); the plug connector (3) is electrically connected to the circuit board (71); and the outer walls of the upper shell (2) and the lower shell (1) are both provided with heat dissipation vents (5).

4. The lithium battery charger that automatically adjusts charging current according to temperature according to claim 1, characterized in that: The support assembly (8) includes a plurality of bases (83), wherein the plurality of bases (83) are evenly fixed on the four corners of the inner wall of the lower shell (1), the top walls of the plurality of bases (83) are mounted with micro dampers (84), the tops of the plurality of micro dampers (84) are fixedly mounted with support seats (86), a plurality of buffer springs (85) are mounted on the adjacent side of the plurality of bases (83) and the support seats (86) and located outside the micro dampers (84), and a plurality of studs (87) are fixedly mounted on the tops of the plurality of support seats (86).

5. The lithium battery charger that automatically adjusts charging current according to temperature according to claim 4, characterized in that: Through openings (81) are provided at the four corners of the top wall of the circuit board (71) and at positions corresponding to the studs (87); the bottom wall of the circuit board (71) is in contact with the top wall of the support seat (86); the inner walls of several through openings (81) are in contact with the outer walls of the studs (87); the outer walls of several studs (87) are screwed with screw sleeves (82); and the bottom ends of several screw sleeves (82) are in contact with the top wall of the circuit board (71).

6. The lithium battery charger that automatically adjusts charging current according to temperature according to claim 1, characterized in that: The fixing assembly (9) includes four insertion rods (91), the bottom wall of the lower shell (1) is uniformly provided with insertion openings (96), the top wall of the circuit board (71) and the position corresponding to the insertion openings (96) are all provided with through openings (95), the inner top wall of the upper shell (2) and the position corresponding to the through openings (95) are all provided with screw grooves (94), the outer walls of the four insertion rods (91) are all fitted with the corresponding insertion openings (96) and the inner walls of the through openings (95), the top ends of the four insertion rods (91) are all provided with threaded lines (92), the four threaded lines (92) are all screwed and fixed to the inner walls of the corresponding screw grooves (94), and the bottom ends of the four insertion rods (91) are all fixedly mounted with hexagonal blocks (97).

7. The lithium battery charger that automatically adjusts charging current according to temperature according to claim 1, characterized in that: A reinforcing rib (93) is installed on the inner top wall of the upper shell (2).

Images