CN204967337U - Lithium ion power batteries's control circuit that charges - Google Patents
Lithium ion power batteries's control circuit that charges Download PDFInfo
- Publication number
- CN204967337U CN204967337U CN201520670373.XU CN201520670373U CN204967337U CN 204967337 U CN204967337 U CN 204967337U CN 201520670373 U CN201520670373 U CN 201520670373U CN 204967337 U CN204967337 U CN 204967337U
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- Prior art keywords
- circuit
- lithium
- ion
- power cell
- control circuit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a lithium ion power batteries's control circuit that charges, the control circuit that should charge is including singlechip (5) of connecting display screen (4) and pressure sensor (16), a control end of this singlechip (5) passes through switch circuit (8) and connects lithium ion power batteries, PWM circuit (6) that are used for becoming PWM signal processing voltage signal are connected to the PWM port of this singlechip (5), the connection is in the output of PWM circuit (6) and charging circuit (7) between switch circuit (8), and sampling circuit (9) of connection between charging circuit (7) and singlechip (5). The utility model discloses the realization is to the control of lithium ion power batteries's intelligent charging, and circuit structure is simple, safe and reliable and can prolong life -span of lithium ion power batteries.
Description
Technical field
The utility model relates to a kind of rechargeable battery, especially relates to a kind of charging control circuit of lithium-ion-power cell.
Background technology
Along with the development of lithium ion battery technology is increasingly mature, the industries such as electric automobile, UPS, energy-accumulating power station also increase gradually to the demand of lithium ion battery, but be directed to lithium ion battery at present, its security performance is a very important link, and this is also a key factor of restriction lithium ion battery development.
At present, lithium-ion-power cell in use, inside battery can produce gas, inside battery air pressure is caused to increase gradually, the phenomenon such as often occur that battery bulging is existing, leakage, aluminum plastic film burst, What is more causes battery explosion when non-normal use because cell internal pressure is excessive, and the people of surrounding or thing are sustained damage.Further, lithium-ion-power cell is when charging, if overcharge, then battery compartment can produce a large amount of gas, and chamber internal gas pressure raises, if pressure release not in time, may produce blast, therefore there is certain potential safety hazard, coefficient of safety is also lower.
Utility model content
For overcoming the deficiencies in the prior art, the utility model proposes a kind of charging control circuit of lithium-ion-power cell, circuit structure is simple, safe and reliable and can extend useful life of lithium-ion-power cell.
A kind of charging control circuit of lithium-ion-power cell, wherein, lithium-ion-power cell comprises: housing, be located at negative plate and the block of housing two end respectively, this block comprises the lid connecting housing and the outer projection exposing outside lid, be located at the battery core in housing cavity, this battery core and outer projection are electrical connected; Be located at the top board of lid downside, this top board is provided with explosionproof hole, and the medial surface of top board is provided with pressure chamber, is provided with pressure sensor in this pressure chamber, and housing is provided with the display screen being electrically connected pressure sensor; Projection is provided with multiple bleeder port outside, and block is provided with safety valve, and one end of this safety valve is communicated with bleeder port, and the other end is communicated with the inner chamber of housing; This charging control circuit comprises: the single-chip microcomputer connecting display screen and pressure sensor, a control end of this single-chip microcomputer connects lithium-ion-power cell by switching circuit, the PWM port of this single-chip microcomputer connects the pwm circuit being used for pwm signal being processed into voltage signal, be connected to the charging circuit between the output of pwm circuit and switching circuit, and be connected to the sample circuit between charging circuit and single-chip microcomputer.
Wherein, switching circuit is relay.
Wherein, connect the RC filter circuit of the PWM port of single-chip microcomputer, be connected to the voltage follower of RC filter circuit output, the output of voltage follower connects charging circuit by coupling circuit.
Wherein, the lower end of battery core is provided with supporting bracket, and this supporting bracket is connected with negative plate by elastic conduction portion.
Wherein, be provided with gap between lid and housing, the data wire of pressure sensor leads to the outside of housing from this gap.
Wherein, housing is circular, oval or square.
Wherein, the upper end of battery core is provided with backing plate, and backing plate is provided with the sponge for Electolyte-absorptive.
Wherein, battery core comprises positive terminal, negative pole ring and insulation diaphragm, and negative pole ring set is located at the outer surface of positive terminal, and insulation diaphragm is arranged between positive terminal and negative pole ring.
Wherein, the centre of positive terminal buries anode ear and conducting matrix grain underground, and conducting matrix grain and anode ear are connected as a single entity, and anode ear runs through setting along the longitudinal direction of positive terminal, and the upper end of anode ear is exposed the upper surface of positive terminal and is electrically connected with outer projection.
Wherein, outer projection is provided with 2-4 bleeder port uniformly with equal angles.
Compared with prior art, the utility model has following beneficial effect:
According to the pressure sensing result of pressure sensor, the control circuit that the utility model proposes, judges whether that transmission overcharges, overcharge the only charging of time control stop, the safety valve of lithium-ion-power cell inner chamber, and explosionproof hole is set on top board, and reach and lose heart and explosion prevention function, safe and reliable; In addition, the utility model adopts the PWM waveform of distinct pulse widths to set different charging currents for the storage battery of different capabilities, and the pulsewidth of PWM waveform is adjusted by sampling charging current, thus guarantee to adopt the charging current of mating most to charge to storage battery, not only be conducive to improving charge efficiency, more effectively can ensure the useful life of storage battery.To sum up, the utility model loses heart and realizes while explosion-proof function intelligent charge and control having in conjunction with lithium-ion-power cell, safe and reliable and can extend life-span of lithium-ion-power cell.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model lithium-ion-power cell.
Fig. 2 is the structural representation of the utility model charging control circuit.
Fig. 3 is the schematic diagram of a pwm circuit embodiment.
Embodiment
As shown in Figure 1, the utility model proposes mentioned lithium-ion-power cell and comprise: be circular, oval or square housing 1, this housing 1 inner chamber is contained with electrolyte; One end of this housing 1 is provided with negative plate 11, and another end is provided with top board 14; Between negative plate 11 and top board 14, battery core is provided with in the inner chamber of housing 1; This top board 14 is provided with explosionproof hole 19; Be provided with pressure chamber 15 at the medial surface of top board 14, in this pressure chamber 15, be provided with pressure sensor 16; Be positioned at top board 14 lateral surface and be provided with block, this block comprises lid 21 and exposes outside the outer projection 22 of lid 21, and this lid 21 and outer projection 22 are formed in one structure, and the anode ear 311 of battery core is electrical connected with outer projection 22; Projection 22 is provided with multiple bleeder port 23 outside, and block is also provided with safety valve, and one end of this safety valve connects bleeder port 23, and the other end connects the inner chamber of housing 1; In addition, be provided with supporting bracket 13 at the lower end of battery core, this supporting bracket 13 is connected with negative plate 11 by elastic conduction portion 12; Be provided with gap between lid 21 and housing 1, the data wire 161 of pressure sensor 16 leads to the outside of housing 1 from this gap; Housing 1 is also provided with the display screen 4 being electrically connected pressure sensor 16, and this display screen 4 can be used for data such as the display electricity of lithium-ion-power cell and the pressure of inner chamber etc.
Battery core is located at the inner chamber of housing 1, and between negative plate 11 and top board 14.The lower end of battery core is arranged in supporting bracket 13, and the upper end of battery core is provided with backing plate 17, and backing plate 17 is provided with the sponge 18 for Electolyte-absorptive.Wherein, battery core comprises positive terminal 31, negative pole ring 32 and insulation diaphragm 33, and negative pole ring 32 is set in the outer surface of positive terminal 31, and insulation diaphragm 33 is arranged between positive terminal 31 and negative pole ring 32.And, anode ear 311 and conducting matrix grain 312 is buried underground in the centre of positive terminal 31, conducting matrix grain 312 and anode ear 311 are connected as a single entity, and anode ear 311 runs through setting along the longitudinal direction of positive terminal 31, and the upper surface that positive terminal 31 is exposed in the upper end of anode ear 311 is connected with outer projection 22.
Operationally, when the air pressure of lithium-ion-power cell inside exceedes the safe atmospheric pressure value of safety valve setting, safety valve is opened, the pressure of housing 1 inner chamber is by bleeder port 23 externally pressure release, after pressure release, safety valve cuts out automatically, thus prevent lithium-ion-power cell because of the excessive generation blast of chamber pressure, guarantee the normal use of lithium-ion-power cell.
In addition, in order to ensure quick and balanced pressure release, outer projection 22 is provided with 2-4 bleeder port 23 uniformly with equal angles.
Shown in composition graphs 2, the charging control circuit of the lithium-ion-power cell that the utility model proposes comprises: the single-chip microcomputer 5 connecting display screen 4 and pressure sensor 16, and a control end of this single-chip microcomputer 5 connects lithium-ion-power cell by switching circuit 8; The PWM port of this single-chip microcomputer 5 connects pwm circuit 6, and pwm signal is processed into voltage signal by this pwm circuit 6; Be connected to the charging circuit 7 between the output of pwm circuit 6 and switching circuit 8, this charging circuit 7 charges to lithium-ion-power cell for exporting charging current; Be connected to the sample circuit 9 between charging circuit 7 and single-chip microcomputer 5, the charging current that this sample circuit 9 pairs of charging circuits 7 export is sampled, feedback sample electric current is to single-chip microcomputer 5, by single-chip microcomputer 5 according to the voltage of lithium-ion-power cell and sample rate current, the size of charging current is regulated with the pulsewidth of the mode dynamic conditioning pwm signal limiting charge power, and control maximum charging current is no more than maximum charging current corresponding to this battery capacity, realizes intelligent charge.
Single-chip microcomputer 5 is given by the sample force value of housing 1 inner chamber of pressure sensor 16, force value is shown by display screen 4 by single-chip microcomputer 5, and judge whether to overcharge (if overcharge according to detecting the force value obtained, then battery compartment can produce a large amount of gas, chamber internal gas pressure raises), if, then single-chip microcomputer 5 sends control signal control switch circuit 8 and disconnects charging path between charging circuit 7 and lithium-ion-power cell, stop charging to lithium-ion-power cell, thus protection lithium-ion-power cell prevents and overcharges, extend the life-span of lithium-ion-power cell.
Such as, switching circuit 8 is relay.When single-chip microcomputer 5 judges to overcharge according to the testing result of pressure sensor 16, single-chip microcomputer 5 exports high-level control signal, and relay disconnects the connection between charging circuit 7 and lithium-ion-power cell.
In addition, each circuit module adopted in above-mentioned charging control circuit, all can adopt the circuit of existing corresponding function to realize, this is prior art, and the application describes in detail no longer one by one.
Below only illustrate its concrete circuit structure with pwm circuit 6, shown in composition graphs 3, pwm circuit 6 comprises: the RC filter circuit being connected to the PWM port of single-chip microcomputer 5, and this RC filtered electrical routing resistance R520, resistance R521 electric capacity C529 and electric capacity C530 are formed; Be connected to the voltage follower U11B (adopting LM2904D chip to realize) of RC filter circuit output; Charging circuit is connected by coupling circuit after output (output signal CS1) the series resistor R523 of voltage follower U11B.The PWM waveform that the PWM port of single-chip microcomputer 5 exports is smoothed to straight line by RC filter circuit.The PWM waveform of different duty, carries out filtered magnitude of voltage all by different through RC filter circuit, such as is set to the duty ratio of 50%, and so the input voltage of the positive input terminal of voltage follower U11B is the half of input PWM voltage.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a charging control circuit for lithium-ion-power cell, is characterized in that:
This lithium-ion-power cell comprises: housing (1), be located at negative plate (11) and the block of housing (1) two end respectively, this block comprises the lid (21) connecting housing (1) and the outer projection (22) exposing outside lid (21), be located at the battery core in housing (1) inner chamber, this battery core and outer projection (22) are electrical connected; Be located at the top board (14) of lid (21) downside, this top board (14) is provided with explosionproof hole (19), and the medial surface of top board (14) is provided with pressure chamber (15), be provided with pressure sensor (16) in this pressure chamber (15), housing (1) is provided with the display screen (4) being electrically connected pressure sensor (16); Projection (22) is provided with multiple bleeder port (23) outside, and block is provided with safety valve, and one end of this safety valve is communicated with bleeder port (23), and the other end is communicated with the inner chamber of housing (1);
This charging control circuit comprises: the single-chip microcomputer (5) connecting display screen (4) and pressure sensor (16), a control end of this single-chip microcomputer (5) connects lithium-ion-power cell by switching circuit (8), the PWM port of this single-chip microcomputer (5) connects the pwm circuit (6) being used for pwm signal being processed into voltage signal, be connected to the charging circuit (7) between the output of pwm circuit (6) and switching circuit (8), and be connected to the sample circuit (9) between charging circuit (7) and single-chip microcomputer (5).
2. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, switching circuit (8) is relay.
3. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, connect the RC filter circuit of the PWM port of single-chip microcomputer (5), be connected to the voltage follower of RC filter circuit output, the output of voltage follower connects charging circuit by coupling circuit.
4. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, the lower end of battery core is provided with supporting bracket (13), and this supporting bracket (13) is connected with negative plate (11) by elastic conduction portion (12).
5. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, be provided with gap between lid (21) and housing (1), the data wire (161) of pressure sensor (16) leads to the outside of housing (1) from this gap.
6. the charging control circuit of lithium-ion-power cell according to claim 1, is characterized in that, housing (1) is circular, oval or square.
7. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, the upper end of battery core is provided with backing plate (17), and backing plate (17) is provided with the sponge (18) for Electolyte-absorptive.
8. the charging control circuit of lithium-ion-power cell according to claim 1, it is characterized in that, battery core comprises positive terminal (31), negative pole ring (32) and insulation diaphragm (33), negative pole ring (32) is set in the outer surface of positive terminal (31), and insulation diaphragm (33) is arranged between positive terminal (31) and negative pole ring (32).
9. the charging control circuit of lithium-ion-power cell according to claim 8, it is characterized in that, the centre of positive terminal (31) buries anode ear (311) and conducting matrix grain (312) underground, conducting matrix grain (312) and anode ear (311) are connected as a single entity, anode ear (311) runs through setting along the longitudinal direction of positive terminal (31), and the upper end of anode ear (311) is exposed the upper surface of positive terminal (31) and is electrically connected with outer projection (22).
10. the charging control circuit of lithium-ion-power cell according to claim 1, is characterized in that, outer projection (22) is provided with 2-4 bleeder port (23) uniformly with equal angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670373.XU CN204967337U (en) | 2015-09-01 | 2015-09-01 | Lithium ion power batteries's control circuit that charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520670373.XU CN204967337U (en) | 2015-09-01 | 2015-09-01 | Lithium ion power batteries's control circuit that charges |
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| Publication Number | Publication Date |
|---|---|
| CN204967337U true CN204967337U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520670373.XU Expired - Fee Related CN204967337U (en) | 2015-09-01 | 2015-09-01 | Lithium ion power batteries's control circuit that charges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347157A (en) * | 2018-10-12 | 2019-02-15 | 国网浙江省电力有限公司信息通信分公司 | A kind of control system of battery service |
| CN116674425A (en) * | 2023-06-07 | 2023-09-01 | 湖南文理学院 | Coordinated control method and system for power battery pack based on total amount consistency |
-
2015
- 2015-09-01 CN CN201520670373.XU patent/CN204967337U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347157A (en) * | 2018-10-12 | 2019-02-15 | 国网浙江省电力有限公司信息通信分公司 | A kind of control system of battery service |
| CN116674425A (en) * | 2023-06-07 | 2023-09-01 | 湖南文理学院 | Coordinated control method and system for power battery pack based on total amount consistency |
| CN116674425B (en) * | 2023-06-07 | 2023-12-01 | 湖南文理学院 | Coordinated control method and system for power battery pack based on total amount consistency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |