Battery pack
US-2024243589-A1 · Jul 18, 2024 · US
Circuit and method for voltage equalization in large batteries
US9225191B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9225191-B2 |
| Application number | US-201313770070-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 19, 2013 |
| Priority date | Feb 19, 2013 |
| Publication date | Dec 29, 2015 |
| Grant date | Dec 29, 2015 |
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Abstract
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A battery equalization circuit is provided, comprising: a positive battery node connected to a positive terminal of a monitored battery cell contained in a battery circuit that includes a plurality of other battery cells connected in series with the monitored battery cell; a negative battery node connected to a negative terminal of the monitored battery cell; a secondary transformer coil configured to receive a square wave, the secondary transformer coil having an upper transformer node and a lower transformer node; an upper switch connected between the positive battery node and the upper transformer node; a lower switch connected between the negative battery node and the lower transformer control node; and a control circuit configured to control operation of the upper and lower switches based on a measured cell voltage between the positive battery node and the negative battery node, and a total battery voltage of the battery circuit.
First claim
Opening claim text (preview).
What is claimed is: 1. A battery equalization circuit, comprising: a first positive battery node configured to connect to a positive terminal of a first battery cell contained in a battery circuit that includes a plurality of other battery cells connected in series with the first monitored battery cell; a first negative battery node configured to connect to a negative terminal of the first battery cell; a first transformer coil configured to receive an output voltage of an AC…
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Frequently asked questions
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- What does patent US9225191B2 cover?
- A battery equalization circuit is provided, comprising: a positive battery node connected to a positive terminal of a monitored battery cell contained in a battery circuit that includes a plurality of other battery cells connected in series with the monitored battery cell; a negative battery node connected to a negative terminal of the monitored battery cell; a secondary transformer coil config…
- Who is the assignee on this patent?
- Drobnik Josef, Freescale Semiconductor Inc
- What technology area does this patent fall under?
- Primary CPC classification H02J7/56. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 29 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).