Rechargeable electric battery system

• US 4,289,836 A
• Filed: 03/05/1980
• Issued: 09/15/1981
• Est. Priority Date: 03/05/1980
• Status: Expired due to Term

• Current Assignee: Jerome H. Lemelson
• Original Assignee: Jerome H. Lemelson
• Inventors: Lemelson, Jerome H.
• Primary Examiner(s): LeFevour, Charles F.
• Application Number:
  US06/127,400
• Time in Patent Office: 559 Days
• Field of Search: 429/90-93, 429/17, 429/19, 429/61, 320/2, 320/48, 320/49
• US Class Current: 429/61
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/389 Measuring internal impedance, internal conductance or related variables
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 6/505 Cells combined with indicating means for external visualization of the condition, e.g. by change of colour or of light intensity
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/00309 Overheat or overtemperature protection
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/007188 the charge cycle being controlled or terminated in response to non-electric parameters
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A rechargable battery, system and method for controlling its operation and the recharging thereof in order to prolong the useful life of the battery and to optimize its operation. In one form, an electronic microprocessor is provided within or attached to the battery for receiving and processing electrical signals generated by one or more sensors of battery operational variable and for generating output signals which may be employed to control the charge of the battery and to display one or more variables concerned with the battery operation.

Claims

1. A rechargeable electric storage battery and a control system therefor comprising in combination:

a rechargeable cell for generating electricity,

a source of recharging electrical energy,

control means for controlling the flow of electrical energy to recharge said electric battery,

first means for sensing an operating condition of said cell,

second means for generating electrical signals indicative of the condition of said cell,

third means for receiving said electrical signals generated by said second means,

fourth means for processing said electrical signals received by said third means and generating digital signals,

fifth means including an electronic computer for receiving said digital electrical signals, analyzing same and generating control signals, and

means for applying said control signals for operating said control means to control the flow of electrical energy to said cell for charging said rechargeable cell.

2. A rechargeable battery and control system in accordance with claim 1 wherein said fourth and fifth means comprise a single computer.

3. A rechargeable battery and control system in accordance with claim 2 wherein said first means is operable to sense the discharge condition of said cell.

4. A rechargeable battery and control system in accordance with claim 1 wherein said computer comprises an electronic microprocessor.

5. A rechargeable battery and control system in accordance with claim 4 wherein said cell defines at least part of an electric battery defined by a battery housing, said electronic microprocessor being supported by said battery housing, further including electronic display means supported by said housing and operable by said microprocessor to display the condition of said battery.

6. A rechargeable battery and control system in accordance with claim 1 wherein said first means is operable to sense discharging of said cell, said fifth means being operable for summing signals generated by said fourth means and thereby determining the degree said cell has discharged and to control the charging of said rechargeable cell.

7. A rechargeable battery in accordance with claim 6 including means for recording the number of times said cell undergoes a recharging cycle and indicating when a predetermined number of charging cycles have been experienced by said cell.

8. A rechargeable battery in accordance with claim 1 including a visual display means for receiving control signals generated by said fifth means and responsive to said control signals for displaying a condition of said battery.

9. A rechargeable battery in accordance with claim 8 wherein said visual display means is operable to display the discharge condition of said battery.

10. A rechargeable battery in accordance with claim 8 wherein said visual display means is viewable from the exterior of said battery.

11. A rechargeable battery and control system in accordance with claim 1 including means situated remote from said battery for indicating the conditon of said battery, further including sixth means for transmitting signals generated by said fifth means to said remote indicating means for controlling same to indicate a condition of said battery.

12. A rechargeable battery in accordance with claim 1 wherein the electrical signals generated by said first means are analog signals, said fourth means comprising analog-to-digital conversion means for converting said analog signals to digital signals and said fifth means is operable to compare said digital signals with recordings provided in a memory.

13. A rechargeable battery in accordance with claim 1 wherein said first means is operable to sense a plurality of battery variables selected from the group of variables including battery internal resistence, temperature, pressure, state of charge, cell condition and level of battery electrolyte.

14. A rechargeable battery in accordance with claim 1 including a synthetic speech signal generating means controlled by said electronic computer for generating speech signals indicative of the condition sensed and means for converting such speech signals to sounds of words indicating such condition.

15. A rechargeable battery in accordance with claim 14 wherein said means for converting said synthetic speech signals to sounds of words indicative of the battery condition sensed is located remote from said battery.