CN117293974A - Reverse connection preventing lithium battery charger and application method - Google Patents
Reverse connection preventing lithium battery charger and application method Download PDFInfo
- Publication number
- CN117293974A CN117293974A CN202311561931.4A CN202311561931A CN117293974A CN 117293974 A CN117293974 A CN 117293974A CN 202311561931 A CN202311561931 A CN 202311561931A CN 117293974 A CN117293974 A CN 117293974A
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- Prior art keywords
- lithium battery
- pressing
- charging
- negative
- positive
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 121
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a reverse connection preventing lithium battery charger and an application method thereof, wherein the reverse connection preventing lithium battery charger comprises a charging bin, a plurality of positioning grooves are arranged in the inner bottom of the charging bin side by side, and a pressing rod and a driving unit are arranged at two ends of the charging bin; the pressing rod is provided with a flexible pressing sheet, a plurality of charging contacts and a plurality of elastic pieces; an insulating guide sleeve is arranged on the pressing rod; the charging contact comprises a cylinder, a conductive core is arranged in the cylinder in a penetrating way, a positive gear groove and a negative gear groove are sequentially formed in the outer surface of the cylinder along the length direction, and an elastic conductive piece is arranged on the insulating guide sleeve in a penetrating way; a wiring board is arranged on the pressing rod in a sliding manner, and a positive wiring terminal and a negative wiring terminal are arranged on the wiring board; by using the lithium battery charger, the lithium battery can be charged in batch conveniently, the lithium battery can be put in and taken out conveniently and rapidly, the identification of the anode and the cathode can be automatically carried out, the anode and the cathode do not need to be distinguished by manual operation, and the risk caused by reverse connection can be completely avoided.
Description
Technical Field
The invention relates to the technical field of lithium battery charging, in particular to an anti-reverse connection lithium battery charger and an application method thereof.
Background
Lithium batteries are batteries using a nonaqueous electrolyte solution and using lithium metal or lithium alloy as a positive/negative electrode material, and a lithium battery charger is usually configured for use in order to facilitate the repeated use of the lithium battery; in the prior art, when a cylindrical lithium battery (such as 14500 lithium battery) is charged, a plurality of lithium batteries are needed to be pressed in one by one according to the positive and negative directions of a charging position, after the charging position is assembled, a spring at the charging position can prop against the negative electrode of the lithium battery and provide elastic pressing force, and a pole piece at the charging position can prop against the positive electrode of the lithium battery; the existing structure is very succinct, but the installation of impressing one by one is very time-consuming and inconvenient, still needs to discern positive and negative simultaneously when the loading, can bring the security risk if reverse connection appears, in addition, still need dial the battery one by one usually when taking out, also very inconvenient, needs a lithium battery charger that prevents reverse connection that can overcome above-mentioned defect.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an anti-reverse connection lithium battery charger and an application method of the anti-reverse connection lithium battery charger aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
the lithium battery charger comprises a charging bin, wherein a plurality of positioning grooves for positioning the lithium battery to be charged are arranged in the inner bottom of the charging bin side by side, the length of each positioning groove is equal to the length of the shell of the lithium battery to be charged, and a pressing rod and a driving unit for driving the pressing rod to move obliquely downwards to press the shell of the lithium battery to be charged are arranged at two ends of the charging bin; the pressing rod is provided with a flexible pressing sheet, a plurality of charging contacts corresponding to the positioning grooves one by one and a plurality of elastic pieces providing elasticity for the charging contacts one by one; an insulating guide sleeve sleeved at the tail end of the charging contact is arranged on the pressing and holding rod; the charging contact comprises an insulated cylinder, a conductive core is arranged in the cylinder in a penetrating manner, an anode gear groove and a cathode gear groove are sequentially formed in the outer surface of the cylinder along the length direction, an elastic conductive piece matched with the anode gear groove and the cathode gear groove is arranged on the insulating guide sleeve in a penetrating manner, the front end of the conductive core exceeds the front end of the cylinder, and the outer surface of the conductive core is partially exposed in the anode gear groove and the cathode gear groove; the pressing rod is provided with a wiring board in a sliding manner, the wiring board is provided with a positive wiring terminal and a negative wiring terminal, the wiring board moves along with the movement of the charging contact, and the positive gear groove and the negative gear groove are opposite to the positive wiring terminal and the negative wiring terminal respectively; the elastic conductive piece is positioned between the column body and the wiring board and is used for switching conduction between the conductive core and the positive wiring terminal and between the conductive core and the negative wiring terminal.
The invention relates to a reverse connection preventing lithium battery charger, wherein the section of a pressing rod is in an inverted L shape, and an insulating guide sleeve is arranged on the inner side surface of the longitudinal edge of the pressing rod; a slot is formed in the transverse edge of the pressing rod, and the wiring board is arranged in the slot in a sliding manner; the wiring board is fixedly connected with the column body through a longitudinal connecting rod; the upper surface of the insulating guide sleeve is provided with a movable groove matched with the connecting rod; the elastic conductive piece is arranged on the upper surface of the insulating guide sleeve in a penetrating mode.
The anti-reverse-connection lithium battery charger provided by the invention is characterized in that the elastic piece is a spring, the spring is positioned in the insulating guide sleeve, one end of the spring is connected with the inner side surface of the longitudinal edge of the pressing rod, and the other end of the spring is connected with the column body.
The anti-reverse-connection lithium battery charger comprises an elastic conductive piece, wherein the elastic conductive piece comprises a conductive column penetrating and fixed on an insulating guide sleeve, a first conductive elastic sheet matched with a positive electrode gear groove and a negative electrode gear groove is arranged at the lower end of the conductive column, and a second conductive elastic sheet matched with a positive electrode binding post and a negative electrode binding post is arranged at the upper end of the conductive column.
The anti-reverse-connection lithium battery charger provided by the invention has the advantages that the positive terminal and the negative terminal are respectively arranged on the wiring board in a penetrating way, and the lower ends of the positive terminal and the negative terminal are respectively provided with a positioning groove matched with the second conductive elastic piece.
The invention relates to a reverse connection preventing lithium battery charger, which further comprises a first charging module and a second charging module; in the two pressing and holding rods, all positive terminal posts on one of the pressing and holding rods are electrically connected with the positive charging interface of the first charging module, all negative terminal posts are electrically connected with the negative charging interface of the second charging module, all positive terminal posts on the other pressing and holding rods are electrically connected with the positive charging interface of the second charging module, and all negative terminal posts are electrically connected with the negative charging interface of the first charging module.
The anti-reverse-connection lithium battery charger comprises a shell, wherein the charging bin is arranged on the upper surface of the shell; the driving unit comprises two oblique sliding rails which are respectively and correspondingly connected with the pressing and holding rods in a sliding manner, a pull rope which pulls the two pressing and holding rods to move downwards along the oblique sliding rails, a winding and unwinding motor which winds and unwinds the pull rope, a sensor which triggers the winding and unwinding motor and a reset spring which resets the pressing and holding rods; the two ends of the pull rope are respectively connected with the two pressing and holding rods, the middle part of the pull rope is fixedly connected with the movable end of the winding and unwinding motor, a wire passing through hole for the pull rope to pass through and a mounting cavity for mounting the winding and unwinding motor are arranged in the shell, the sensor is controlled to rotate by a set angle when triggered, and the rotating directions of the operation of the winding and unwinding motors are opposite to each other.
The application method of the anti-reverse-connection lithium battery charger is applied to the anti-reverse-connection lithium battery charger, and the implementation method is as follows:
in the initial state, the elastic conductive piece stays in the negative gear groove;
when the lithium batteries are required to be charged, placing the lithium batteries into a charging bin in batches, and correspondingly positioning and placing one battery in each positioning groove;
after the placement is finished, the driving unit is controlled to drive the two pressing rods to move obliquely downwards to press the shells of the lithium batteries, the flexible pressing sheets are preferentially contacted with the shells of the lithium batteries to perform initial positioning in the pressing process, and then the pressing rods are continuously close to the shells of the lithium batteries, and the flexible pressing sheets are extruded and deformed;
the charging contact on one side of the positive electrode of the lithium battery stops moving midway due to the blocking of the positive electrode of the lithium battery, the charging contact and the corresponding insulating guide sleeve move relatively, the wiring board moves along with the charging contact relative to the pressing rod, the corresponding elastic conductive piece enters the positive electrode gear slot from the negative electrode gear slot, and the elastic conductive piece is electrically connected with the corresponding positive electrode binding post and the conductive core surface of the positive electrode gear slot;
the charging contact on one side of the lithium battery where the negative electrode is positioned is not blocked and does not move, and stays in the negative electrode gear groove, and the corresponding elastic conductive piece is electrically connected with the corresponding negative electrode binding post and the conductive core surface of the negative electrode gear groove;
the lithium batteries are automatically distinguished from each other, the charging modules corresponding to the positive terminal and the negative terminal are adopted to perform corresponding charging, and after charging contact, the driving unit is controlled to enable the two pressing rods to reset to release pressing of the shells of the lithium batteries, so that the lithium batteries in the positioning grooves can be quickly taken away.
The invention has the beneficial effects that: in the initial state, the elastic conductive piece stays in the negative gear groove; when the lithium batteries are required to be charged, placing the lithium batteries into a charging bin in batches, and correspondingly positioning and placing one battery in each positioning groove; after the placement is finished, the driving unit is controlled to drive the two pressing rods to move obliquely downwards to press the shells of the lithium batteries, the flexible pressing sheets are preferentially contacted with the shells of the lithium batteries to perform initial positioning in the pressing process, and then the pressing rods are continuously close to the shells of the lithium batteries, and the flexible pressing sheets are extruded and deformed; the charging contact on one side of the positive electrode of the lithium battery stops moving midway due to the blocking of the positive electrode of the lithium battery, the charging contact and the corresponding insulating guide sleeve move relatively, the wiring board moves along with the charging contact relative to the pressing rod, the corresponding elastic conductive piece enters the positive electrode gear slot from the negative electrode gear slot, and the elastic conductive piece is electrically connected with the corresponding positive electrode binding post and the conductive core surface of the positive electrode gear slot; the charging contact on one side of the lithium battery where the negative electrode is positioned is not blocked and does not move, and stays in the negative electrode gear groove, and the corresponding elastic conductive piece is electrically connected with the corresponding negative electrode binding post and the conductive core surface of the negative electrode gear groove; the automatic distinction of the anode and the cathode of the lithium batteries is completed, then the charging modules corresponding to the anode binding posts and the cathode binding posts are adopted for corresponding charging, after charging contact, the driving unit is controlled to enable the two pressing rods to reset and release the pressing of the shells of the plurality of lithium batteries, and the lithium batteries in the positioning grooves can be quickly taken away; by using the lithium battery charger, the lithium battery can be charged in batch conveniently, the charging stability is good, the lithium battery can be put in and taken out conveniently and rapidly, the identification of the anode and the cathode can be automatically carried out, the anode and the cathode are not required to be distinguished by manual operation, and the risk caused by reverse connection can be completely avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained by those skilled in the art without inventive effort:
FIG. 1 is a cross-sectional view of a reverse connection preventing lithium battery charger according to a preferred embodiment of the present invention;
fig. 2 is an enlarged schematic view at a in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Referring to fig. 2, the anti-reverse connection lithium battery charger according to the preferred embodiment of the invention includes a charging bin 1, wherein a plurality of positioning slots 10 for positioning a lithium battery 2 to be charged are arranged in parallel at the inner bottom of the charging bin 1, the length of each positioning slot 10 is equal to the length of the shell of the lithium battery 2 to be charged, and a pressing rod 3 and a driving unit 4 for driving the pressing rod 3 to move obliquely downwards to press the shell of the lithium battery to be charged are arranged at both ends of the charging bin 1; the pressing rod 3 is provided with a flexible pressing sheet 30, a plurality of charging contacts 31 corresponding to the positioning grooves one by one and a plurality of elastic pieces 32 providing elasticity for the charging contacts one by one; an insulating guide sleeve 33 sleeved at the tail end of the charging contact 31 is arranged on the pressing rod 3; the charging contact 31 comprises an insulated column body 310, a conductive core 311 is arranged in the column body 310 in a penetrating manner, a positive electrode gear groove 312 and a negative electrode gear groove 313 are sequentially arranged on the outer surface of the column body 310 along the length direction, an elastic conductive piece 34 matched with the positive electrode gear groove 312 and the negative electrode gear groove 313 is arranged on the insulating guide sleeve 33 in a penetrating manner, the front end of the conductive core 311 exceeds the front end of the column body 310, and the outer surface of the conductive core 311 is partially exposed in the positive electrode gear groove 312 and the negative electrode gear groove 313; the pressing rod 3 is provided with a wiring board 5 in a sliding manner, the wiring board 5 is provided with a positive wiring terminal 50 and a negative wiring terminal 51, the wiring board 5 moves along with the movement of the charging contact 31, and a positive gear groove 312 and a negative gear groove 313 are respectively opposite to the positive wiring terminal 50 and the negative wiring terminal 51; the elastic conductive piece 34 is positioned between the column body 310 and the wiring board 5 and is used for switching conduction between the conductive core 311 and the positive wiring terminal 50 and the negative wiring terminal 51;
in the initial state, the elastic conductive member 34 stays in the negative electrode shift groove 313;
when lithium batteries are required to be charged, placing the lithium batteries into the charging bin 1 in batches, and correspondingly positioning and placing one battery in each positioning groove 10;
after the placement is completed, the driving unit 4 is controlled to drive the two pressing rods 3 to move obliquely downwards to simultaneously press and hold the shells of the lithium batteries, the flexible pressing sheets 30 are preferentially contacted with the shells of the lithium batteries to perform initial positioning in the pressing process, and then the pressing rods 3 are continuously close to the shells of the lithium batteries, and the flexible pressing sheets 30 are extruded and deformed;
the charging contact 31 on the side where the positive electrode is located on the lithium battery 2 stops moving midway due to the blocking of the positive electrode of the lithium battery, the charging contact 31 and the corresponding insulating guide sleeve 33 move relatively, the wiring board 5 moves along with the charging contact 31 relative to the pressing rod 3, the corresponding elastic conductive piece 34 enters the positive electrode gear groove 312 from the negative electrode gear groove 313, and the elastic conductive piece 34 is electrically connected with the corresponding positive electrode binding post 50 and the conductive core surface of the positive electrode gear groove 312;
the charging contact 31 on the side where the negative electrode of the lithium battery 2 is positioned is not blocked and does not move, and stays in the negative electrode gear groove 313, and the corresponding elastic conductive piece 34 is electrically connected with the corresponding negative electrode binding post 51 and the conductive core surface of the negative electrode gear groove 313;
after the automatic distinction of the positive electrodes and the negative electrodes of the lithium batteries 2 is completed, charging modules corresponding to the positive electrode binding post 50 and the negative electrode binding post 51 are adopted to perform corresponding charging, and after the charging contacts, the driving unit 4 is controlled to enable the two pressing rods 3 to reset to release the pressing of the shells of the lithium batteries 2, so that the lithium batteries 2 in the positioning grooves 10 can be quickly taken away;
by using the lithium battery charger, the lithium battery 2 can be rapidly and conveniently charged in batch, the charging stability is good, the lithium battery 2 can be put in and taken out very conveniently and rapidly, the identification of the anode and the cathode can be automatically carried out, the anode and the cathode are not required to be distinguished by manual operation, and the risk caused by reverse connection can be completely avoided.
Preferably, in order to ensure smooth charging, a first charging module 60 and a second charging module 61 can be arranged on the anti-reverse lithium battery charger; in the two pressing rods 3, all positive electrode binding posts 50 on one of the two pressing rods are electrically connected with positive charging interfaces of the first charging module 60, all negative electrode binding posts 51 are electrically connected with negative charging interfaces of the second charging module 61, all positive electrode binding posts 50 on the other pressing rod are electrically connected with positive charging interfaces of the second charging module 61, and all negative electrode binding posts 51 are electrically connected with negative charging interfaces of the first charging module 60; by adopting the electric connection mode, the first charging module 60 and the second charging module 61 respectively charge (in parallel) all lithium batteries in the forward direction and charge (in parallel) all lithium batteries in the reverse direction, so as to distinguish positive and negative;
of course, it can be understood that, under the condition that the above structure has distinguished the positive and negative poles of the battery, other forms of electric connection charging circuit can be designed according to the need, and the method is not limited to the method of adopting two charging modules;
preferably, the cross section of the pressing rod 3 is in an inverted L shape, and the insulating guide sleeve 33 is arranged on the inner side surface of the longitudinal edge of the pressing rod 3; a slot 35 is arranged on the transverse edge of the holding rod 3, and the wiring board 5 is arranged in the slot 35 in a sliding way; the wiring board 5 is fixedly connected with the column body 310 through a longitudinal connecting rod 7; the upper surface of the insulating guide sleeve 33 is provided with a movable groove 330 matched with the connecting rod 7; the elastic conductive piece 34 is arranged on the upper surface of the insulating guide sleeve 33 in a penetrating way; after the structural design is adopted, the column body and the wiring board are connected through the connecting rod to form a transverse U-shaped structure, so that the stability can be enhanced, and the reliability of the wiring board moving along with the column body is ensured; the whole structure is reasonable and compact, and the integrity is good.
Preferably, the elastic member 32 is a spring, the spring is located in the insulating guide sleeve 33, one end of the spring 32 is connected with the inner side surface of the longitudinal edge of the holding rod 3, and the other end is connected with the column 310;
preferably, the elastic conductive member 34 includes a conductive post 340 penetrating and fixed on the insulating guide sleeve 33, a first conductive elastic sheet 341 (which may be an existing component such as a bead screw) matching the positive electrode gear slot 312 and the negative electrode gear slot 313 is disposed at the lower end of the conductive post 340, and a second conductive elastic sheet 342 (which may be an existing component such as a bead screw) matching the positive electrode terminal 50 and the negative electrode terminal 51 is disposed at the upper end of the conductive post 340; the positive terminal 50 and the negative terminal 51 are respectively arranged on the wiring board 5 in a penetrating way, and the lower ends of the positive terminal and the negative terminal are respectively provided with a positioning groove 500 matched with the second conductive elastic piece 342; the structure is reasonable, and the quick switching of the electric connection is convenient.
Preferably, the anti-reverse-connection lithium battery charger comprises a shell 8, wherein a charging bin 1 is arranged on the upper surface of the shell 8; the driving unit 4 comprises two oblique sliding rails 40 which are respectively and correspondingly connected with the pressing and holding rods 3 in a sliding manner, a pull rope 41 which pulls the two pressing and holding rods 3 to move downwards along the oblique sliding rails, a winding and unwinding motor 42 which winds and unwinds the pull rope, a sensor 43 which triggers the motor and a reset spring 44 which resets the pressing and holding rods 3; two ends of the pull rope 41 are respectively connected with two pressing rods 3, the middle part of the pull rope 41 is fixedly connected with the movable end of the winding and unwinding motor 42, a wire passing through hole (not shown in the figure) for the pull rope 41 to pass through and a mounting cavity (not shown in the figure) for mounting the winding and unwinding motor 42 are arranged in the shell 8, the sensor 43 is triggered to control the winding and unwinding motor 42 to operate by a set angle, and the rotating directions of the operation of the winding and unwinding motors 42 of two adjacent times are opposite;
the driving principle is as follows: the winding and unwinding motor 42 is controlled to operate by triggering the sensor 43, and the winding and unwinding motor is rotated by a set angle to wind or unwind the pull rope without triggering once, and the rotation directions of the winding and unwinding motors are opposite for two adjacent times, for example: the first time is in a winding form, at the moment, the pressing and holding rod is pulled by the pull rope to slide downwards along the inclined slide rail, the reset spring is stretched, the pressing and holding rod presses and holds the battery, then the pressing and holding action is kept until the next time of triggering the sensor again, at the moment, the winding and unwinding motor reversely rotates for a set angle, the pull rope is unwound, the pressing and holding rod resets under the action of the elastic force of the reset spring, the reset position is kept, and the next pressing and holding operation is waited; the structure is simple, the control is convenient, and the intelligence is high; among them, the sensor 43 may employ a touch sensor, a fingerprint sensor, or the like.
The application method of the anti-reverse-connection lithium battery charger is applied to the anti-reverse-connection lithium battery charger, and the implementation method is as follows:
in the initial state, the elastic conductive piece stays in the negative gear groove;
when the lithium batteries are required to be charged, placing the lithium batteries into a charging bin in batches, and correspondingly positioning and placing one battery in each positioning groove;
after the placement is finished, the driving unit is controlled to drive the two pressing rods to move obliquely downwards to press the shells of the lithium batteries, the flexible pressing sheets are preferentially contacted with the shells of the lithium batteries to perform initial positioning in the pressing process, and then the pressing rods are continuously close to the shells of the lithium batteries, and the flexible pressing sheets are extruded and deformed;
the charging contact on one side of the positive electrode of the lithium battery stops moving midway due to the blocking of the positive electrode of the lithium battery, the charging contact and the corresponding insulating guide sleeve move relatively, the wiring board moves along with the charging contact relative to the pressing rod, the corresponding elastic conductive piece enters the positive electrode gear slot from the negative electrode gear slot, and the elastic conductive piece is electrically connected with the corresponding positive electrode binding post and the conductive core surface of the positive electrode gear slot;
the charging contact on one side of the lithium battery where the negative electrode is positioned is not blocked and does not move, and stays in the negative electrode gear groove, and the corresponding elastic conductive piece is electrically connected with the corresponding negative electrode binding post and the conductive core surface of the negative electrode gear groove;
the lithium batteries are automatically distinguished from each other, the charging modules corresponding to the positive terminal and the negative terminal are adopted to perform corresponding charging, and after charging contact, the driving unit is controlled to drive the two pressing rods to reset to release pressing of the shells of the lithium batteries, so that the lithium batteries in the positioning grooves can be quickly taken away.
By using the lithium battery charger, the lithium battery can be charged in batch conveniently, the charging stability is good, the lithium battery can be put in and taken out conveniently and rapidly, the identification of the anode and the cathode can be automatically carried out, the anode and the cathode are not required to be distinguished by manual operation, and the risk caused by reverse connection can be completely avoided.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (8)
1. The utility model provides a prevent lithium battery charger of reverse connection, includes the storehouse that charges, the inside bottom in storehouse that charges is provided with a plurality of constant head tanks that wait to charge lithium battery location side by side, its characterized in that, the length of constant head tank is equivalent with the shell length of waiting to charge lithium battery, the both ends in storehouse that charges all are provided with and press the pole and drive the drive unit that presses the pole slant to move down and press the shell of waiting to charge lithium battery; the pressing rod is provided with a flexible pressing sheet, a plurality of charging contacts corresponding to the positioning grooves one by one and a plurality of elastic pieces providing elasticity for the charging contacts one by one; an insulating guide sleeve sleeved at the tail end of the charging contact is arranged on the pressing and holding rod; the charging contact comprises an insulated cylinder, a conductive core is arranged in the cylinder in a penetrating manner, an anode gear groove and a cathode gear groove are sequentially formed in the outer surface of the cylinder along the length direction, an elastic conductive piece matched with the anode gear groove and the cathode gear groove is arranged on the insulating guide sleeve in a penetrating manner, the front end of the conductive core exceeds the front end of the cylinder, and the outer surface of the conductive core is partially exposed in the anode gear groove and the cathode gear groove; the pressing rod is provided with a wiring board in a sliding manner, the wiring board is provided with a positive wiring terminal and a negative wiring terminal, the wiring board moves along with the movement of the charging contact, and the positive gear groove and the negative gear groove are opposite to the positive wiring terminal and the negative wiring terminal respectively; the elastic conductive piece is positioned between the column body and the wiring board and is used for switching conduction between the conductive core and the positive wiring terminal and between the conductive core and the negative wiring terminal.
2. The reverse connection preventing lithium battery charger according to claim 1, wherein the cross section of the holding rod is in an inverted L shape, and the insulating guide sleeve is provided on an inner side surface of a longitudinal side of the holding rod; a slot is formed in the transverse edge of the pressing rod, and the wiring board is arranged in the slot in a sliding manner; the wiring board is fixedly connected with the column body through a longitudinal connecting rod; the upper surface of the insulating guide sleeve is provided with a movable groove matched with the connecting rod; the elastic conductive piece is arranged on the upper surface of the insulating guide sleeve in a penetrating mode.
3. The reverse connection preventing lithium battery charger according to claim 2, wherein the elastic member is a spring, the spring is located in the insulating guide sleeve, one end of the spring is connected to an inner side surface of the longitudinal edge of the holding rod, and the other end of the spring is connected to the column.
4. The reverse connection preventing lithium battery charger according to claim 2, wherein the elastic conductive member comprises a conductive post penetrating and fixed on the insulating guide sleeve, a first conductive elastic piece matched with the positive gear groove and the negative gear groove is arranged at the lower end of the conductive post, and a second conductive elastic piece matched with the positive terminal and the negative terminal is arranged at the upper end of the conductive post.
5. The reverse connection preventing lithium battery charger according to claim 4, wherein the positive terminal and the negative terminal are both penetrated on the wiring board, and the lower ends of the positive terminal and the negative terminal are both provided with positioning grooves matched with the second conductive elastic pieces.
6. The anti-reverse lithium battery charger of claim 1, further comprising a first charging module and a second charging module; in the two pressing and holding rods, all positive terminal posts on one of the pressing and holding rods are electrically connected with the positive charging interface of the first charging module, all negative terminal posts are electrically connected with the negative charging interface of the second charging module, all positive terminal posts on the other pressing and holding rods are electrically connected with the positive charging interface of the second charging module, and all negative terminal posts are electrically connected with the negative charging interface of the first charging module.
7. The anti-reverse lithium battery charger according to claim 1, wherein the anti-reverse lithium battery charger comprises a housing, and the charging bin is arranged on the upper surface of the housing; the driving unit comprises two oblique sliding rails which are respectively and correspondingly connected with the pressing and holding rods in a sliding manner, a pull rope which pulls the two pressing and holding rods to move downwards along the oblique sliding rails, a winding and unwinding motor which winds and unwinds the pull rope, a sensor which triggers the winding and unwinding motor and a reset spring which resets the pressing and holding rods; the two ends of the pull rope are respectively connected with the two pressing and holding rods, the middle part of the pull rope is fixedly connected with the movable end of the winding and unwinding motor, a wire passing through hole for the pull rope to pass through and a mounting cavity for mounting the winding and unwinding motor are arranged in the shell, the sensor is controlled to rotate by a set angle when triggered, and the rotating directions of the operation of the winding and unwinding motors are opposite to each other.
8. An application method of a reverse connection-preventing lithium battery charger, which is applied to the reverse connection-preventing lithium battery charger as claimed in any one of claims 1 to 7, is characterized by comprising the following implementation steps:
in the initial state, the elastic conductive piece stays in the negative gear groove;
when the lithium batteries are required to be charged, placing the lithium batteries into a charging bin in batches, and correspondingly positioning and placing one battery in each positioning groove;
after the placement is finished, the driving unit is controlled to drive the two pressing rods to move obliquely downwards to press the shells of the lithium batteries, the flexible pressing sheets are preferentially contacted with the shells of the lithium batteries to perform initial positioning in the pressing process, and then the pressing rods are continuously close to the shells of the lithium batteries, and the flexible pressing sheets are extruded and deformed;
the charging contact on one side of the positive electrode of the lithium battery stops moving midway due to the blocking of the positive electrode of the lithium battery, the charging contact and the corresponding insulating guide sleeve move relatively, the wiring board moves along with the charging contact relative to the pressing rod, the corresponding elastic conductive piece enters the positive electrode gear slot from the negative electrode gear slot, and the elastic conductive piece is electrically connected with the corresponding positive electrode binding post and the conductive core surface of the positive electrode gear slot;
the charging contact on one side of the lithium battery where the negative electrode is positioned is not blocked and does not move, and stays in the negative electrode gear groove, and the corresponding elastic conductive piece is electrically connected with the corresponding negative electrode binding post and the conductive core surface of the negative electrode gear groove;
the lithium batteries are automatically distinguished from each other, the charging modules corresponding to the positive terminal and the negative terminal are adopted to perform corresponding charging, and after charging contact, the driving unit is controlled to enable the two pressing rods to reset to release pressing of the shells of the lithium batteries, so that the lithium batteries in the positioning grooves can be quickly taken away.
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| CN117293974B (en) | 2024-03-19 |
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