CN208479213U - Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit - Google Patents
Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit Download PDFInfo
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- CN208479213U CN208479213U CN201820855042.7U CN201820855042U CN208479213U CN 208479213 U CN208479213 U CN 208479213U CN 201820855042 U CN201820855042 U CN 201820855042U CN 208479213 U CN208479213 U CN 208479213U
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- battery
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- tension
- battery pack
- single battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of low-tension supply based on adjustable battery pack cascaded structure to high-tension battery group charging control circuit, the circuit design can carry out charge control to each single battery (or single battery group) by controlling the guiding path of electric current, it can be connected according to several single batteries of any dynamic select of voltage value (or single battery group) of low-tension supply and charge circuit is added, realize that low-tension supply charges to high-tension battery group.To the single battery (or single battery group) of series bus is not added, it can be achieved that active equalization ability identical with charging current.It is controlled by dynamic, each single battery (or single battery group) in battery pack can reach fully charged.
Description
Technical field
The utility model relates to field of batteries.
Background technique
New energy technology is fast-developing, especially lithium battery the fields such as standby energy storage and electric car extensive use,
Requirements at the higher level are proposed to crucial battery energy storage and battery management technique, need to be promoted validity and equilibrium to battery pack charging
Ability performs to the energy storage characteristic of battery pack most preferably.The especially use of high-tension battery group needs effectively to solve high voltage to fill
The using security issues of electricity.The hardware cost for needing to reduce high-voltage charging equipment simultaneously, enables new energy battery technology to obtain
Wider promotion and application.
Battery pack packet technology has high requirement to the consistency of single battery, otherwise because of the serious shadow of battery consistency problem
Ring the performance of battery pack overall performance.But it is limited by battery technology, needs to solve battery one by better battery management technique
Cause property problem reduces battery pack packet to the coherence request of single battery.
There is the problems such as low efficiency, practical application effect is undesirable in current passive balanced and active equalization technology.It is special
It is not active equalization technology, including capacitor degree of flying method, voltage transformation approach, circuit is extremely complex, hardware volume is big, application cost is high
The defects of.It needs better battery management technique and promotes application level.
The performance of entire battery pack is limited by single battery failure or the influence of quality problems.Need better cell tube
The reliability and safety of reason technology raising battery applications.
Utility model content
Technical problem to be solved in the utility model is to realize a kind of adjustable battery pack cascaded structure, has battery guarantor
The low-tension supply of shield and active equalization function is to high-tension battery group charging control circuit.
To achieve the goals above, the technical solution adopted in the utility model are as follows: based on adjustable battery pack cascaded structure
Low-tension supply to high-tension battery group charging control circuit, battery pack includes battery unit and battery management unit, each described
The anode connection electrode input end of battery unit, cathode connect negative input, the electrode input end connection of adjacent cell
The negative input of adjacent cell constitutes concatenated battery pack, and the electrode input end and cathode of each battery unit are defeated
Enter and is connected between end by second switch element, the electrode input end and battery unit anode or negative input and battery
First switching element is equipped between unit cathode, positioned at the electrode input end of the battery unit of battery pack head and the tail position and negative
Charging interface of the pole input terminal as battery pack, each battery unit is respectively connected with voltage and electric quantity acquisition unit, described
Voltage and electric quantity acquisition unit export signal collected to battery management unit, the battery management unit output control signal
To the first switching element and second switch element of each battery unit.
When the first switching element of battery unit disconnects, second switch element is closed, the battery unit is from battery pack
Separation, when the first switching element of battery unit closure, second switch element disconnect, which is linked into battery pack
In.
The charging interface is equipped with charging voltage acquisition unit, and the charging voltage acquisition unit outputs voltage signal to electricity
Pond administrative unit.
Based on low-tension supply to the control method of high-tension battery group charging control circuit:
When starting to charge, the input voltage of charging interface is obtained；
It alarms if output voltage values are greater than the safety value upper limit, if between the safety value upper limit and safety value lower limit,
Start to charge for all batteries unit, charge in batches for battery unit if being lower than safety value lower limit.
The first switching element closure of the battery unit of charged state, second switch element disconnect, the electricity of non-charged state
The first switching element of pool unit disconnects, second switch element is closed.
If the input voltage of charging interface is lower than safety value lower limit, compared according to the input voltage of current charging interface pre-
Deposit table, obtain the battery unit quantity that every batch of participates in charging, in charging process, if it is current participate in charging some or it is more
A battery unit electricity is full of, then disconnects the switch element for filling with the battery unit of electricity, and not yet fully charged electricity is added
Pool unit participates in charging, keeps the battery unit quantity for currently participating in charging identical as the numerical value for acquisition of tabling look-up, until all batteries
Unit is each filled with electricity.
The utility model can adjust battery pack cascaded structure, have the low-tension supply pair of battery protection and active equalization function
High-tension battery group charging control circuit.The circuit design can be (or single to each single battery by controlling the guiding path of electric current
Body battery pack) charge control is carried out, it can be according to several single batteries of any dynamic select of voltage value of low-tension supply (or monomer electricity
Pond group) series connection addition charge circuit, realize that low-tension supply charges to high-tension battery group.To the monomer that series bus is not added
Battery (or single battery group) is, it can be achieved that active equalization ability identical with charging current.It is controlled by dynamic, battery pack
In each single battery (or single battery group) can reach fully charged.
Compared with prior art, the utility model has the beneficial effects that
Charging process adds according to several single batteries of any dynamic select of voltage value (or single battery group) of low-tension supply
Enter tandem compound, the series voltage of battery pack controlled can adjust, and realize that low-tension supply charges to high-tension battery group.
Tandem compound can be added in single battery (or single battery group), tandem compound can also be bypassed out completely.It can control
Charging current processed can reach euqalizing current equal to charging current with or without any single battery (or single battery group)
High efficiency it is balanced.
Each single battery (or single battery group) in battery pack can reach fully charged, make the energy storage of battery pack
Characteristic performs to most preferably, and independent of the coherence request to single battery.
Two groups of field-effect tube, relay or other switching device conducts is used only in each single battery (or single battery group)
Turn-on and turn-off control, can be realized and seal in or Bypass Control, and simple circuit, control is simple, low in cost.
Failure or quality problems especially are occurred to single battery (or single battery group), can be bypassed completely in tandem compound
Outside, the reliability and safety of battery pack application are provided.
Detailed description of the invention
The content of width attached drawing every in the utility model specification expression is briefly described below:
Fig. 1 is that the low-tension supply based on adjustable battery pack cascaded structure illustrates high-tension battery group charging control circuit
Figure；
Fig. 2 is charging of the low-tension supply based on adjustable battery pack cascaded structure to high-tension battery group charging control circuit
Status diagram.
Label in above-mentioned figure is equal are as follows:
Specific embodiment
Technical solution used by the utility model, which is that change is existing, directly connects single battery (or single battery group)
Be combined into battery pack, but on-off control carried out by field-effect tube, relay or other switching devices, by single battery (or
Single battery group) bus is sealed in, battery voltage is obtained by bus.Field-effect tube, relay or other derailing switches can also be passed through
Part carries out on-off control, and by this grade of bus conducting connection, single battery (or single battery group) bypasses out tandem compound, do not pass through
Charging current.
Each single battery (or single battery group) in battery pack passes through field-effect tube, relay or other switching devices
On-off control is carried out, realizes and single battery (or single battery group) is sealed in into bus, or by single battery (or single battery group)
Bypass out tandem compound.
The cathode of single battery (or single battery group) is directly connected with series bus, positive then (first opens by Sx_1
Close element) switch connection series bus.Sx_1 switch conduction, Sx_2 (second switch element) switch disconnect, then this grade of monomer electricity
Pond (or single battery group) seals in bus, participates in charging.Sx_1 switch disconnects, Sx_2 switch conduction, then this grade of single battery (or
Single battery group) tandem compound is bypassed out, without charging.
Adjustable battery pack cascaded structure, has the low-tension supply of battery protection and active equalization function to high-tension battery group
Charging control circuit is specific as follows:
Single battery (or single battery group) cathode is directly connected with series bus, and directly series connection does not form battery to anode
Group, but on-off control is carried out by field-effect tube, relay or other switching devices, by single battery (or single battery group)
Seal in bus.
Single battery (or single battery group) can carry out on-off control by field-effect tube, relay or other switching devices
System, by this grade of bus conducting connection, single battery (or single battery group) then bypasses out tandem compound.
Charging process is logical according to several single batteries of any dynamic select of voltage value (or single battery group) of low-tension supply
It crosses field-effect tube, relay or other switching devices and seals in bus progress charging connection, realize low-tension supply to high-tension battery group
It charges.Other single batteries (or single battery group) can should by field-effect tube, relay or other switching devices
Grade bus conducting connection, this grade of cell bypass go out tandem compound, obstructed overcharge current.
Charging process is according to the voltage and status information of each single battery (or single battery group), and real-time control adjustment is respectively
A single battery (or single battery group) seals in busbar charging or bypasses out tandem compound, realizes charge protection and active equalization.
It is controlled by dynamic, each single battery (or single battery group) in battery pack can reach fully charged.
Charging process is equal to charging current to the euqalizing current of each single battery (or single battery group).
By the utility model technology, the charging voltage to high-tension battery group can be reduced, reaches better voltage security mark
It is quasi-.By reducing the output voltage of charger, the use environment of charger is safer, and design complexities and hardware cost are substantially
It reduces.
By the utility model technology, requirement of the battery pack packet to single battery consistency can be substantially reduced.
By the utility model technology, charger can be realized to each single battery (or single battery group) in battery pack
Shield and active equalization.Each single battery (or single battery group) can reach fully charged.
By the utility model technology, the single battery (or single battery group) that problem can will be present thoroughly excludes connecting
Combination is outer, and the use of battery pack will not be influenced because of the damage of individual monomers battery (or single battery group), greatly improves system
Safety and reliability.
Normal high-voltage charging control logic:
Sx_1 switch conduction, Sx_2 switch disconnect.All single batteries (or single battery group) access series bus, charging
Voltage is equal to the series voltage of all battery units.
Low pressure charging control logic:
Several groups are selected in conjunction with the status information of single battery (or single battery group) according to the voltage value of charge power supply
Sx_1 switch conduction, Sx_2 switch disconnect.So that the cell voltage that tandem compound is added is met the voltage requirement of charging voltage, realizes
Low pressure charging.
Charging process, serial connection charge is added in the single battery (or single battery group) for adjusting different location in real time, final real
Each single battery (or single battery group) in existing battery pack can reach fully charged.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as the various unsubstantialities carried out using the method concept and technical solution of the utility model change
Into, or it is not improved the conception and technical scheme of the utility model are directly applied into other occasions, in the utility model
Protection scope within.
Claims (3)
1. the low-tension supply based on adjustable battery pack cascaded structure, to high-tension battery group charging control circuit, battery pack includes electricity
Pool unit and battery management unit, the anode connection electrode input end of each battery unit, cathode connect negative input,
The negative input of the electrode input end connection adjacent cell of adjacent cell constitutes concatenated battery pack, and feature exists
In: it is connected between the electrode input end and negative input of each battery unit by second switch element, the anode
It is equipped with first switching element between input terminal and battery unit anode or negative input and battery unit cathode, is located at described
Charging interface of the electrode input end and negative input of the battery unit of battery pack head and the tail position as battery pack, it is each described
Battery unit is respectively connected with voltage and electric quantity acquisition unit, and the voltage and electric quantity acquisition unit export signal collected to electricity
Pond administrative unit, the battery management unit output control signals to the first switching element and second switch of each battery unit
Element.
2. low-tension supply according to claim 1 is to high-tension battery group charging control circuit, it is characterised in that: when battery list
When the first switching element of member disconnects, second switch element is closed, which separates from battery pack, when battery unit
When first switching element closure, second switch element disconnect, which is linked into battery pack.
3. low-tension supply according to claim 2 is to high-tension battery group charging control circuit, it is characterised in that: the charging
Interface is equipped with charging voltage acquisition unit, and the charging voltage acquisition unit outputs voltage signal to battery management unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855042.7U CN208479213U (en) | 2018-06-04 | 2018-06-04 | Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820855042.7U CN208479213U (en) | 2018-06-04 | 2018-06-04 | Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479213U true CN208479213U (en) | 2019-02-05 |
Family
ID=65216006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820855042.7U Expired - Fee Related CN208479213U (en) | 2018-06-04 | 2018-06-04 | Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649648A (en) * | 2018-06-04 | 2018-10-12 | 李勇 | Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit and its control method |
-
2018
- 2018-06-04 CN CN201820855042.7U patent/CN208479213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649648A (en) * | 2018-06-04 | 2018-10-12 | 李勇 | Low-tension supply based on adjustable battery pack cascaded structure is to high-tension battery group charging control circuit and its control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20190604 |
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| CF01 | Termination of patent right due to non-payment of annual fee |