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Lithium ion storage battery with high capacity and instant high-rate discharge performance

A high-rate discharge, large-capacity technology, applied in battery circuit devices, arrangement of multiple synchronous batteries, current collectors, etc., can solve the problems of lack of instantaneous high-rate discharge, inability to meet the requirements of large capacity, and achieve a simple circuit structure. Effect

Inactive Publication Date: 2017-05-10
SICHUAN LIKENL LITHIUM POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power batteries have the characteristics of instantaneous high-rate discharge, but they cannot meet the requirements of large capacity. Capacitive batteries have the characteristics of large capacity, but they lack the characteristics of instantaneous high-rate discharge.

Method used

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  • Lithium ion storage battery with high capacity and instant high-rate discharge performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 1 A lithium-ion storage battery with large capacity and instantaneous high-rate discharge performance is shown, including a casing, a battery pack all arranged in the casing, and a charging circuit for charging the battery pack. The battery pack includes a plurality of storage batteries connected in parallel. Electric branch circuit, the storage branch circuit includes a plurality of batteries connected in series, the battery includes a power cell battery and a capacity cell battery; the charging circuit includes a triode and a controllable precision voltage regulator tl431, so The collector of the triode is connected to the input terminal through the second resistor and the input terminal is connected to the anode of the diode through the first resistor, the cathode of the diode is grounded, the cathode of the tl431 is connected to the base of the triode and the anode is grounded , the emitter of the triode is connected to the ground through a voltage divid...

Embodiment 2

[0020] This embodiment is optimized on the basis of the above embodiments, that is, the composition ratio of the power type battery and the capacity type battery in the power storage branch is 3:2.

Embodiment 3

[0022] Existing batteries generally use a battery pack composed of multiple batteries to meet the requirements of large capacity. It uses a plurality of batteries connected in parallel to form a battery pack that meets a certain capacity requirement, and then multiple battery packs are connected in series to form a large-capacity battery that meets a certain capacity and a certain rated voltage. However, there is a disadvantage of using this method, that is, if the parameters in a single battery pack do not match, such as internal resistance, when the battery stops working, since a single battery pack is composed of multiple batteries connected in parallel, a discharge circuit must be formed in the battery pack. After a period of time, the battery capacity will drop significantly, which will damage the service life of the battery. When the parameters of each battery in the battery pack do not match, the loss will be more obvious. like figure 1 , this embodiment adopts a struc...

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Abstract

The invention discloses a lithium ion storage battery with high capacity and instant high-rate discharge performance. The lithium ion storage battery comprises a shell, a battery pack and a charging circuit for charging the battery pack, wherein the battery pack and the charging circuit are arranged in the shell respectively; the battery pack comprises a plurality of storage branch circuits in parallel connection, each storage branch circuit comprises a plurality of batteries in series connection, and the batteries comprise power type battery cells and capacity type battery cells; the charging circuit comprises an audion and a controllable precision constant voltage source tl431, the collector electrode of the audion is connected with an input end through a second resistor and the input end is connected with the anode of a diode through a first resistor, the cathode of the diode is grounded, the cathode of the tl431 is connected onto the base electrode of the audion and the anode of the tl431 is grounded, the emitter electrode of the audion is grounded through a voltage division circuit, the reference electrode of the tl431 is connected onto a voltage division end of the voltage division circuit, the anode of the battery pack is connected onto the emitter electrode of the audion and the cathode of the battery pack is grounded. The lithium ion storage battery is simple in circuit structure.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a lithium-ion storage battery with large capacity and instantaneous high-rate discharge performance. Background technique [0002] Batteries as energy storage elements are widely used. When the battery is charging, constant voltage charging can greatly improve the service life of the battery. The existing battery charging constant voltage circuit has a complicated circuit structure. The batteries of the existing lithium-ion batteries either use power batteries or capacity batteries. Power batteries have the characteristics of instantaneous high-rate discharge, but they cannot meet the requirements of large capacity. Capacitive batteries have the characteristics of large capacity, but lack the characteristics of instantaneous high-rate discharge. How to realize the instantaneous high-rate discharge performance of large-capacity batteries is also a topic worthy of research. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013
Inventor 钟东龙
Owner SICHUAN LIKENL LITHIUM POWER CO LTD
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