RU67778U1 - LITHIUM ION BATTERY - Google Patents

Abstract

The utility model relates to lithium-ion chemical current sources and can be used for autonomous power supply of devices and electrical equipment. The proposed utility model solves the problem of expanding the functionality, simplifying the design and improving the reliability of the 8LIKGP-10S lithium-ion battery in a prismatic aluminum housing, consisting of 8 LIKGP-10S lithium-ion batteries of a prismatic shape with a capacity of 10 A.h, interconnected in serial electrical circuit. The problem is solved in that for maintenance and upkeep of a lithium-ion battery consisting of 8 batteries (from 5 to 8), the battery contains two devices for monitoring the electrical parameters of current sources (1 and 2). Each control device is a system of electrically interconnected functional modules for managing and processing information (measuring the magnitude of the current, temperature and voltage on each battery) provides a charge-discharge of the battery. The outputs of the control and information processing modules (1 and 2) are connected to the inputs of the key management module (3) via charge-discharge control buses (9 and 10), the output of which is connected through the control bus of the power key module (11) to the input of the power module keys (4), the key management module (3) is a set of threshold devices electrically connected to the power key module (4) through the control bus of the power key module (11).

Description

The utility model relates to lithium-ion chemical current sources and can be used to provide autonomous power supply to devices and electrical equipment requiring increased energy and operational characteristics, including recognition and data exchange devices. The utility model relates to a lithium-ion rechargeable battery 8LIKGP-10S developed by OJSC Battery Company Rigel (St. Petersburg) in a prismatic aluminum housing, consisting of 8 prismatic lithium-ion batteries LIKGP-10C with a capacity of 10 Ah, interconnected in a serial electrical circuit.

Known German patent No. 19959019 "Diagnosis of a chemical current source." Published on June 13, 2001. The patent proposes a technical solution for continuously monitoring the state of a “charged-discharged” battery, based on an assessment of the current state parameters by changing current, voltage, and temperature. The deviation of the measured parameter values from the initial ones is compared with increments calculated by the processor. The comparison procedure eliminates a false result. If the result falls outside the tolerance field, the measurement is repeated in order to timely detect a sudden battery failure. The procedure is repeated often enough.

Such a technical solution is to some extent technologically complicated during operation due to the time factor.

For the prototype utility model adopted the patent of Russia No. 20443678. Published on September 10, 1995. B. No. 25 "Chemical current source." The invention relates to a HIT with a status indicator, indicating the beginning of the emergency mode of the batteries during thermal acceleration.

The aim of the invention is to increase the reliability of temperature control of batteries. This is achieved by the fact that a layer of electrically conductive material with thermally dependent resistance is placed in the battery inside each battery between the side of the electrode and the battery case. The battery consists of batteries with flat electrodes and a housing of non-magnetic non-conductive material, a device for monitoring batteries, including an alternating voltage generator, a flat winding connected to the terminals of the generator, located

inside the board of non-magnetic material installed between the batteries, a threshold element connected to the output of the generator, an indicator connected to the output of the threshold element and a source of stable DC voltage.

The battery monitoring device mentioned in the patent No. 20443678 complicates the design of the current source, and also does not have the required characteristics for working with high discharge and charge currents of the storage batteries, and this limits the life of the devices and reduces the reliability of its operation.

The proposed utility model solves the problem of expanding functional capabilities, simplifying the design and increasing the reliability of the component of lithium-ion batteries - devices for their maintenance and maintenance (devices for monitoring batteries).

To achieve this technical result, a lithium-ion battery containing current sources connected in series to an electric circuit in an amount necessary to provide the required battery voltage and electric capacity, while the housing of the current sources having a prismatic shape, are fixed relative to each other, equipped with a safety means for relieving excess pressure, an electrode block assembled in the form of a twist is placed in the housing, the positive and negative contacts are brought to current source cover. To maintain and maintain a working lithium-ion battery, it is equipped with a battery monitoring device, which is a control and management module (MKU 1/8).

Moreover, MKU 1/8 consists of: MKU-1 / 4-1 (1) for monitoring batteries G1-G4 (7), MKU-1 / 4-2 (2) for monitoring batteries G5-G8 (8), module power key management (3) and power key module (4).

MKU-1 / 4-1 controls a group of four series-connected batteries (G1-G4) (7): voltage (on each of the batteries G1-G4), the current passing through these batteries, and the temperature of the batteries through the temperature sensor Rt1 (6 ) MKU-1 / 4-2 is arranged similarly, it only controls the battery group G5-G8 (8).

The outputs MKU-1 / 4-1 (9) and MKU-1 / 4-2 (10) for controlling the charge and discharge are connected to the power switch control module (3). The power switch control module (3) generates control signals (11) by the power switch module (4), perceiving signals from each control module of the battery group (1 and 2) MKU-1 / 4-1 (10) and MKU-1 / 4- 2 (11). Depending on the signals at the input (9 and 10), a signal (11) is generated to control the power switches (4).

Figure 1 shows the structural diagram of MKU-1/8, where:

1 - The control module of the battery group G1-G4, MKU-1 / 4-1.

2 - Control module for the battery group G5-G8, MKU-1 / 4-2.

3 - Power key management module.

4 - Power key module.

5 - Battery temperature sensors Rt1 and Rt2.

6 - Sensor resistors for monitoring the current flowing through the battery Rs1 and Rs2.

7 - Group of accumulators (battery assemblies) G1-G4.

8 - Group of accumulators (battery assemblies) G5-G8.

9 - Bus control charge discharge from MKU-1 / 4-1.

10 - Bus charge control discharge from MKU-1 / 4-2.

11 - Bus control module power keys.

12 - Battery output.

The device for monitoring and controlling lithium-ion batteries operates as follows:

MKU-1/8 consists of MKU-1 / 4-1 (1) and MKU-1 / 4-2 (2), a power key management module (3), a power key module (4). Each of MKU-1/4 (1, 2) controls a group of batteries consisting of four series-connected batteries or a battery assembly (7, 8). The following parameters are monitored: discharge charge current using a sensor resistor (6), temperature of a group of batteries (battery assembly) using a temperature sensor (5), voltage on each battery.

When the controlled parameters go beyond the limits, charge-discharge control signals are generated, which are transmitted to the charge-discharge control buses (9, 10) in the power switch control module (3). The power switch control module (3) receives signals from the charge-discharge control buses (9, 10) and generates control signals (11) by the power switch module (4). Depending on the signals issued to the charge-discharge control buses (9, 10) from MKU-1/4 (1, 2), the power switch module control signals (4) are generated, these signals are output to the power switch control bus (11). Depending on the signals issued to the power switch control bus (11), the power switches open or close in the power switch module (4). The opening or closing of the power switches in the power switch module (4) controls the charge or discharge process, thereby

Thus, control and management of the battery output (12), the operating processes of the battery as a whole.

Note: in the preparation of the description and formula of the utility model, the following sources of information are taken into account:

1. German patent No. 19959019 "Diagnosis of chemical current sources."

2. Russian patent No. 2044378 "Chemical current source."

3. Application for invention No. 2005131616 "Secondary lithium battery module."

4. Patent for utility model No. 48110 “Primary lithium battery”.

5. Patent for utility model No. 5129 “Primary lithium battery” (Options).

6. Patent of Russia No. 2260227 "Chemical current source".

7. Patent of Russia No. 2269843 "Method for charging the battery and device for its implementation."

8. Vailov A.M., Eigel F.I. "Automation of control and maintenance of batteries."

Claims (1)

A lithium-ion rechargeable battery containing current sources connected in series to the electric circuit in an amount necessary to provide the required battery voltage and electric capacity, while the cases of current sources having a prismatic shape are fixed relative to each other, equipped with a safety device to relieve excess pressure , in the housing is placed a block of electrodes assembled in the form of a twist, the positive and negative terminals of which are displayed on the cover of the current source, which differs that to maintain and maintain a lithium-ion battery consisting of eight batteries, the battery contains two devices for monitoring the electrical parameters of current sources (1 and 2), each control device is a system of electrically interconnected functional control and processing modules information (measuring the current value, temperature and voltage on each battery), providing charge-discharge of the battery, while the outputs of the control modules information processing (1 and 2) are connected to the inputs of the key management module (3) through the charge-discharge control buses (9 and 10), the output of which is connected through the control bus of the power switch module (11) to the input of the power switch module (4), the module key management (3) is a set of threshold devices that are electrically connected to the power key module (4) through the control bus of the power key module (11).