CN212967957U - Lithium battery with two positive poles, one negative pole and three electric inlet and outlet pile heads for starting internal combustion engine - Google Patents

Abstract

The internal combustion engine starts the used lithium cell two positive poles, one negative pole three electric import and export pile heads, divide and connect two current to enter, export at the positive terminal of the lithium electric core group, the first separated time connects directly on the lithium cell outer casing, the second separated time connects the positive input port on the protective plate of the lithium cell, the positive output port of the protective plate connects on the lithium cell outer casing as the newly-increased current of the positive terminal enters, exports, the negative terminal of the lithium electric core group connects on the lithium cell outer casing, as the negative terminal enters, exports, the internal connecting wire of the lithium cell is finished; the external connection method of the lithium battery is as follows: the pile head of the positive terminal of the lithium cell connected with the shell is directly connected with the pile head of the positive terminal of the starting motor of the internal combustion engine, the pile head of the positive terminal output connected with the shell on the protective plate is directly connected with the pile head of the positive terminal of the generator configured by the internal combustion engine, and the electricity of the electromagnetic switch controlled by the starting of the motor is all connected with the increased current inlet and outlet pile head; and the pile head connected with the negative end of the lithium battery cell group directly answers iron.

Description

Lithium battery with two positive poles, one negative pole and three electric inlet and outlet pile heads for starting internal combustion engine

The technical field is as follows: the lithium battery used for starting the internal combustion engine has two positive electrodes and one negative electrode and three electric inlet and outlet pile heads, is a technical scheme that three direct current input and output ports are arranged on the lithium battery, and is used for starting the lithium battery of the internal combustion engine; the lithium battery has the characteristics that the lithium battery cannot be overcharged during charging and cannot be overdischarged during discharging, the overcharged lithium battery can be subjected to fire explosion, the lithium battery is scrapped after being damaged due to overdischarge during power utilization, and therefore the lithium battery must be required to be a safety protection board to protect the overcharge and overdischarge of the lithium battery.

The prior art is that a protection plate is added at the positive end or the negative end, the current enters and exits through the protection plate, the large current for starting the motor also passes through the protection plate, the current always has a large resistance through an MOS (metal oxide semiconductor) tube on the protection plate, thus the current for starting the motor is discounted, and the starting performance is poor; the current inlet and outlet pile head added on the lithium battery shell is characterized in that the positive electrode end of the lithium battery is controlled by a protection plate and then is connected to the current inlet and outlet pile head added on the shell, the current generated by a generator is specially charged into the inlet and outlet of the battery, and the electricity of an electromagnetic switch started by a motor must pass through the inlet and outlet pile head; if the voltage in the lithium battery is low enough to be protected by the protection board, the current from the inlet pile head and the outlet pile head is cut off by the protection board, an electromagnetic switch for controlling the starting of the motor cannot be opened, and the motor cannot be electrified and rotated; the continuous current passing in and out of the inlet and outlet pile heads is determined according to the maximum current sent by the generator, namely the continuous maximum current of the used protective plate and the maximum current sent by the generator are large, so that the production and manufacturing cost of the protective plate is reduced, and the safety control performance of the protective plate is enhanced; the lithium battery is afraid of overcharging and overdischarging and is protected safely.

Background art: the protection board for starting the lithium battery used in the market is arranged at the negative end or the positive end of the lithium battery cell, and no matter whether the lithium battery is discharged or charged, the lithium battery can be output and used through the protection board, namely the lithium battery has two pile heads of a positive output input port and a negative output input port, and no third current output pile head; therefore, the invention adds a pile head of the anode current output input port on the basis of the traditional anode and cathode current output input ports of the lithium battery.

The invention content is as follows: before the application of the invention, manufacturers connect the current inlet and outlet ports of the lithium battery cell with the protective plate in series, but the operation of the manufacturers is that the lithium battery only has the positive output and input port of current and the output and input port of the negative electrode like the traditional lead-acid battery. Therefore, when the internal combustion engine is started, the current from the positive electrode to the negative electrode must pass through the protection plate, when the internal combustion engine starting motor needs 200 amperes of current, namely the current passing through the MOS tube on the protection plate is 200 amperes, according to the technical requirements of the MOS tube, the MOS tube can bear the current of 200 amperes only by 600 amperes, if the current needed by the starting motor is 600 amperes, the MOS tube of 1800 amperes can bear, the protection plate is difficult to do, even if the internal combustion engine starting motor can be used for a long time, because the tube can be easily burnt out by passing a large current through the MOS tube, so that the lithium battery pack is difficult to popularize as the internal combustion engine starting battery, the service life of the lithium battery is several times that of the lead-acid battery, and the good battery cannot be used? The invention is characterized in that a positive current inlet and outlet is added on the basis of the traditional positive current inlet and negative current outlet of the lithium battery, a protective plate is arranged on the added positive current inlet and outlet (as shown in figure 1), namely, the positive end of the battery cell is connected with the protective plate, the current passes through the protective plate and is connected with a positive current inlet pile head and a positive current outlet pile head which are added on the shell, then, the positive pole of the battery cell is directly provided with the positive current inlet pile head and the positive current outlet pile head on the shell, and the negative pole of the battery cell is connected with the negative pile head of the lithium battery shell, thus being the invention of three current inlet pile heads and three current outlet pile heads.

Description of the drawings: FIG. 1 is a schematic diagram of the internal circuit structure of a lithium battery according to the present application, and the dashed lines connecting three electric pile heads in the diagram are electrical connection lines inside the lithium battery, which are only shown by dashed lines because they are invisible.

The specific implementation mode is as follows: the positive end of the lithium battery cell group is connected with two current inlet and outlet in a split manner, the first branch line is directly connected to the lithium battery shell, the second branch line is connected to the positive input port of the lithium battery safety protection plate, the positive output port of the protection plate is connected to the lithium battery shell to serve as the current inlet and outlet which are newly added to the positive end, the negative end of the lithium battery cell group is connected to the lithium battery shell to serve as the current inlet and outlet of the negative end, and therefore the internal connecting line of the lithium battery is completed; the external connection method of the lithium battery is as follows: the pile head of the positive electrode end of the lithium battery cell connecting shell is directly connected with the pile head of the positive electrode of the starting motor of the internal combustion engine, and the pile head of the positive electrode of the motor and the pile head of the positive electrode of the lithium battery cell connecting shell are strictly forbidden to be connected with any circuit; the pile head of the positive pole output connected to the shell on the protection plate is directly connected to the positive pole pile head of the generator configured by the internal combustion engine, and the pile head is also used for starting the electromagnetic switch by a motor, and is all connected with the pile heads of the current inlet and the current outlet which are added on the shell; the pile head of the lithium battery core group, the negative end of which is connected with the lithium battery shell, is connected with the negative electrode of the whole vehicle.

Claims (1)

1. The lithium battery with two positive poles, one negative pole and three electric inlet and outlet pile heads for starting the internal combustion engine is characterized in that the lithium battery comprises one negative pole current inlet and outlet pile head and two positive pole current inlet and outlet pile heads; the first positive current inlet pile head and the first positive current outlet pile head are directly connected with the positive end of the battery cell, and the second positive current inlet pile head and the second positive current outlet pile head are connected with the protective plate of the lithium battery and then connected with the positive end of the battery cell; the cathode current inlet pile head and the cathode current outlet pile head are directly connected with the cathode end of the battery cell; the first positive current inlet pile head and the first positive current outlet pile head are directly connected with a positive end pile head of a starting motor of the internal combustion engine, and the second positive current inlet pile head and the second positive current outlet pile head are connected with a positive pole pile head of a generator and a starting switch of the motor which are arranged on the internal combustion engine; a negative current inlet pile head and a negative current outlet pile head and two positive current inlet pile heads and two positive current outlet pile heads are arranged on the shell.

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