CN204465034U - Lithium battery group charge and discharge protecting plate and lithium battery group protection system - Google Patents
Lithium battery group charge and discharge protecting plate and lithium battery group protection system Download PDFInfo
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- CN204465034U CN204465034U CN201520022091.9U CN201520022091U CN204465034U CN 204465034 U CN204465034 U CN 204465034U CN 201520022091 U CN201520022091 U CN 201520022091U CN 204465034 U CN204465034 U CN 204465034U
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Abstract
The utility model discloses a kind of lithium battery group charge and discharge protecting plate, comprise the sampling module of the battery information data for each single lithium battery of sampling, for host computer carry out data communication SMBUS communication port and for carry out the bluetooth module of data communication with portable intelligent device.Sampling module, SMBUS communication port and bluetooth module are all electrically connected with governor circuit.Implement the technical solution of the utility model; make lithium battery group charge and discharge protecting plate the battery information data sampled can not only be sent to host computer; the battery information data sampled can also be sent to portable intelligent device; thus the operation of user to lithium battery group can be facilitated realize multipath management; and achieve the resource-sharing of battery information data, be beneficial to large Data Collection and the access Internet of Things of lithium battery group.
Description
Technical field
The utility model relates to lithium battery post protection field, especially relates to a kind of lithium battery group charge and discharge protecting plate and lithium battery group protection system.
Background technology
Lithium battery group, owing to having that volume is little, quality is light, voltage is high, power is large, self discharge is few and the advantage such as long service life, makes it become the main flow of electrokinetic cell gradually.But because the internal energy density of lithium battery group is high, under overcharged state, internal heat is gathered and is too much likely damaged battery performance and useful life.Therefore, lithium battery group must the protective circuit of adapted excellent in design, to ensure its fail safe under excessive charge and discharge state, and prevents its performance degradation.
Existing lithium battery group protection integrated circuit adopts pure analog circuit mostly.But the production technology of pure analog circuit is more complicated than hardware, the reliability of software is not high, uses instability.Further, in existing lithium battery group protection scheme, all do not consider the resource-sharing of the battery information of lithium battery group, be unfavorable for large Data Collection and the access Internet of Things of lithium battery group.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of lithium battery group charge and discharge protecting plate and lithium battery group protection system.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of lithium battery group charge and discharge protecting plate, the lithium battery group of adapted is composed in series by multiple single lithium battery, comprise governor circuit, and the charging control circuit be electrically connected with described governor circuit and charge/discharge control circuit; Also comprise the sampling module of the battery information data for single lithium battery described in each of sampling, for host computer carry out data communication SMBUS communication port and for carry out the bluetooth module of data communication with portable intelligent device;
Described sampling module, described SMBUS communication port and described bluetooth module are all electrically connected with described governor circuit.
In lithium battery group charge and discharge protecting plate of the present utility model, described sampling module comprises:
Voltage sampling circuit, is electrically connected with described governor circuit, for gathering the terminal voltage of single lithium battery described in each;
Current sampling circuit, is electrically connected with described governor circuit, for gathering the loop current of the multiple described single lithium battery of series connection;
Temperature sampling circuit, is electrically connected with described governor circuit, for gathering the battery core surface temperature of single lithium battery described in each.
In lithium battery group charge and discharge protecting plate of the present utility model, described battery information data comprise the cell voltage of single lithium battery described in each, loop current and battery core surface temperature, and the charging and discharging state information of described lithium battery group and electric quantity data information.
In lithium battery group charge and discharge protecting plate of the present utility model; described lithium battery group charge and discharge protecting plate also comprises the equalizing circuit be connected between described governor circuit and lithium battery group; wherein, each single lithium battery of described lithium battery group is connected in parallel at least one equalizing circuit.
In lithium battery group charge and discharge protecting plate of the present utility model, described lithium battery group charge and discharge protecting plate also comprises the power supply circuits for powering to described governor circuit, SMBUS communication port and described bluetooth module.
In lithium battery group charge and discharge protecting plate of the present utility model, described governor circuit comprises overcharge voltage comparison module, overdischarge voltage comparison module and reference voltage source; Described reference voltage source is respectively described overcharge voltage comparison module and described overdischarge voltage comparison module provides the reference voltage Gong comparing;
The output of described overcharge voltage comparison module connects described charging control circuit, and the output of described overdischarge voltage comparison module connects described charge/discharge control circuit.
In lithium battery group charge and discharge protecting plate of the present utility model, described charging control circuit and described charge/discharge control circuit include for the metal-oxide-semiconductor as circuit switching device.
In lithium battery group charge and discharge protecting plate of the present utility model, described governor circuit comprises middle clever SH79F329 model single-chip microcomputer.
The utility model additionally provides a kind of lithium battery group protection system, comprises lithium battery group, also comprises above-mentioned lithium battery group charge and discharge protecting plate.
In lithium battery group protection system of the present utility model; also comprise host computer and portable intelligent device; described host computer is connected with described lithium battery group charge and discharge protecting plate row data communication of going forward side by side by SMBUS bus, and described portable intelligent device is connected with described lithium battery group charge and discharge protecting plate bluetooth row data communication of going forward side by side.
Implement the technical solution of the utility model, at least there is following beneficial effect: the lithium battery group charge and discharge protecting plate in the utility model is by the battery information data of each single lithium battery of acquisition module real-time sampling, and this governor circuit is also connected with SMBUS communication port and bluetooth module simultaneously, make this lithium battery group charge and discharge protecting plate the battery information data sampled can not only be sent to host computer, the battery information data sampled can also be sent to portable intelligent device, thus the operation of user to lithium battery group can be facilitated realize multipath management, and achieve the resource-sharing of battery information data, be beneficial to large Data Collection and the access Internet of Things of lithium battery group.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart of the lithium battery group charge and discharge protecting plate in an embodiment of the present utility model;
Fig. 2 is the circuit diagram of the equalizing circuit in an embodiment of the present utility model;
Fig. 3 is the circuit diagram of the power supply circuits in an embodiment of the present utility model;
Fig. 4 is the fundamental diagram of the lithium battery group charge and discharge protecting plate in an embodiment of the present utility model;
Fig. 5 is the structured flowchart of the lithium battery group protection system in an embodiment of the present utility model;
Wherein, 1, governor circuit; 11, overcharge voltage comparison module; 12, overdischarge voltage comparison module; 13, reference voltage source;
2, charging control circuit; 3, charge/discharge control circuit; 4, sampling module; 41, voltage sampling circuit; 42, current sampling circuit; 43, temperature sampling circuit;
5, SMBUS communication port; 6, bluetooth module; 7, equalizing circuit; 8, power supply circuits;
10, lithium battery group; 20, lithium battery group charge and discharge protecting plate; 30, host computer; 40, portable intelligent device.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Fig. 1 to Fig. 4 shows a kind of lithium battery group charge and discharge protecting plate in the utility model; this lithium electronics group charge and discharge protecting plate can play the useful life extending lithium battery group; strengthen the effect of the safety in utilization of battery; generally; the lithium battery group of its adapted is composed in series by multiple single lithium battery; certainly; the lithium battery group of its adapted also can be composed in parallel by multiple single lithium battery; namely this lithium battery group charge and discharge protecting plate is applied widely, can apply on the market in most lithium battery group.
Fig. 1 is the structured flowchart of the lithium battery group charge and discharge protecting plate in an embodiment of the present utility model.Fig. 2 is the circuit diagram of the equalizing circuit (7) in an embodiment of the present utility model.Fig. 3 is the circuit diagram of the power supply circuits (8) in an embodiment of the present utility model.Fig. 4 is the fundamental diagram of the lithium battery group charge and discharge protecting plate in an embodiment of the present utility model.
As shown in Figure 1, this lithium battery group charge and discharge protecting plate comprises governor circuit (1), and the charging control circuit (2) be electrically connected with this governor circuit (1) and charge/discharge control circuit (3).The Main Function of this governor circuit (1) is, according to program, the algorithm of establishment, to realize the management of battery charging and discharging, ensures that battery normally runs, prevent from overcharging, cross put, overcurrent, the anomaly such as short circuit occur.And the Main Function of this charging control circuit (2) and charge/discharge control circuit (3) is responsible on/off charge and discharge loop, thus reach the function of charge and discharge protecting.
Consult Fig. 1; this lithium battery group charge and discharge protecting plate is except comprising above-mentioned governor circuit (1), charging control circuit (2) and charge/discharge control circuit (3), and this lithium battery group charge and discharge protecting plate also comprises sampling module (4), SMBUS communication port (5) and bluetooth module (6).
This sampling module (4) and governor circuit (1) are electrically connected, and the Main Function of this sampling module (4) is to sample the battery information data of each single lithium battery.Generally, these battery information data can comprise the cell voltage of each single lithium battery, loop current and battery core surface temperature, and the charging and discharging state information of lithium battery group and electric quantity data information.
This SMBUS communication port (5) and governor circuit (1) are electrically connected, the data communication be mainly used between governor circuit (1) and host computer of this SMBUS communication port (5), to report host computer by battery information data.Namely, when this lithium battery group charge and discharge protecting plate is connected to host computer by SMBUS bus, the software on host computer can show the battery information data sampled.
This bluetooth module (6) and governor circuit (1) are electrically connected, the Main Function of this bluetooth module (6) is the data communication between governor circuit (1) and portable intelligent device, so that battery information data wireless is sent to portable intelligent device.Namely this lithium battery group charge and discharge protecting plate can and portable intelligent device between set up the wireless connections such as bluetooth.Generally, portable intelligent device comprises common smart mobile phone, panel computer etc.After then setting up wireless connections, the battery information data that this lithium battery group charge and discharge protecting plate samples can be wirelessly sent to smart mobile phone, and are shown by APP software interface.
Understandably, the wireless connections between this lithium battery group charge and discharge protecting plate and portable intelligent device be realized, except using above-mentioned bluetooth module (6), WiFi module or 3G communication module etc. can also be used.
To sum up, lithium battery group charge and discharge protecting plate in the utility model is by the battery information data of each single lithium battery of acquisition module real-time sampling, and this governor circuit (1) is also connected with SMBUS communication port (5) and bluetooth module (6) simultaneously, make this lithium battery group charge and discharge protecting plate the battery information data sampled can not only be sent to host computer, the battery information data sampled can also be sent to portable intelligent device, thus the operation of user to lithium battery group can be facilitated realize multipath management, and achieve the resource-sharing of battery information data, be beneficial to large Data Collection and the access Internet of Things of lithium battery group.
Further, as shown in Figure 1, this sampling module (4) comprises voltage sampling circuit (41), current sampling circuit (42) and temperature sampling circuit (43).
This voltage sampling circuit (41) and governor circuit (1) are electrically connected, and the Main Function of this voltage sampling circuit (41) is the terminal voltage gathering each single lithium battery.During concrete enforcement, this voltage sampling circuit (41) is responsible for the voltage of each single lithium battery of lithium battery group to access to carry out difference sampling to the AD port of the single-chip microcomputer in governor circuit (1), to obtain the digital quantity of the voltage of single lithium battery.
This current sampling circuit (42) and governor circuit (1) are electrically connected, and the Main Function of this current sampling circuit (42) is the loop current of the multiple single lithium battery gathering series connection.During concrete enforcement, this current sampling circuit (42) is responsible for the current signal flowing through loop to convert to voltage signal and is supplied to single-chip microcomputer in governor circuit (1), and this single-chip microcomputer is become digital quantity after collecting this signal again.
This temperature sampling circuit (43) and governor circuit (1) are electrically connected, and the Main Function of this temperature sampling circuit (43) is the battery core surface temperature gathering each single lithium battery.Generally; this temperature sampling circuit (43) and above-mentioned voltage sampling circuit (41) can be designed to a circuit; thus make the physical dimension of this lithium battery group charge and discharge protecting plate less; thus the volume with the lithium battery group of this lithium battery group charge and discharge protecting plate is less; save the installing space of lithium battery group, the installation advantageously in lithium battery group is applied.
Further; as shown in Figure 1; this lithium battery group charge and discharge protecting plate also comprises the equalizing circuit (7) be connected between governor circuit (1) and lithium battery group, and wherein, each single lithium battery of lithium battery group is connected in parallel at least one equalizing circuit (7).Lithium battery group generally by two joint above single lithium battery be composed in series, each single lithium battery due to exist the reason such as production technology difference, environment for use difference can produce capacity, performance inconsistent.This inconsistent lithium battery group is when charging, and the single lithium battery that capacity relative is little understands an early step overcharge, and when discharging, the single lithium battery that capacity relative is little again can an early step overdischarge.Then the Main Function of this equalizing circuit (7) is the equalizing charge of each single lithium battery realizing lithium battery group, reduces the series connection of lithium battery group in groups to the coherence request between each single lithium battery.
Understandably, the physical circuit of this equalizing circuit (7) has diversity, consults Fig. 2, the preferably physical circuit as shown in Figure 2 of the equalizing circuit (7) in the utility model.During concrete enforcement, the balanced I/O port of this equalizing circuit (7) with the single-chip microcomputer in governor circuit (1) can be connected, can the equalization function of each single lithium battery of On/Off by the balanced I/O port of program control single-chip microcomputer.
In addition, as shown in Figure 1, this lithium battery group charge and discharge protecting plate also comprises the power supply circuits (8) for powering to governor circuit (1), SMBUS communication port (5) and bluetooth module (6).Understandably, the physical circuit of these power supply circuits (8) has diversity, consults Fig. 3, the preferably physical circuit as shown in Figure 3 of the power supply circuits (8) in the utility model.During concrete enforcement, these power supply circuits (8) by battery pack PACK voltage step-down to the normal voltage of each module, single-chip microcomputer work, can reach the object that circuit board is powered.
In certain embodiments, as shown in Figure 1, this governor circuit (1) can comprise overcharge voltage comparison module (11), overdischarge voltage comparison module (12) and reference voltage source (13).
Reference voltage source (13) is respectively overcharge voltage comparison module (11) and overdischarge voltage comparison module (12) provides the reference voltage Gong comparing, the output of overcharge voltage comparison module (11) connects charging control circuit (2), and the output of overdischarge voltage comparison module (12) connects charge/discharge control circuit (3).And charging control circuit (2) and charge/discharge control circuit (3) include for the metal-oxide-semiconductor as circuit switching device.
And; this governor circuit (1) is except each monomer battery voltage of energy real-time sampling, battery core surface temperature, loop current; so that sampled value and protection value are made comparisons; differentiate outside whether whether charging and discharging circuit being cut off or recovering; this governor circuit (1) can also calculate the SOC of lithium battery group simultaneously, and realizes the capacity study of lithium battery group SOH.
As shown in Figure 4, the operation principle of this lithium battery group charge and discharge protecting plate is as follows:
In charging process; output current of charger charges to lithium battery group; charging current direction is as shown in the loop of the arrow instruction in Fig. 5; the voltage collected, electric current, temperature data and the overvoltage set, overcurrent, overheat protector parameter compare by the single-chip microcomputer in governor circuit (1); if exceeded Protection parameters, cut off charging metal-oxide-semiconductor (charging MOS); charge circuit is disconnected, and protection lithium battery group does not overcharge.
In discharge process; lithium battery group output current is to load discharge; discharging current direction is as shown in the loop of the arrow instruction in Fig. 5; the voltage collected, electric current, temperature data and under-voltage, overcurrent, the overheat protector parameter that set compare by the single-chip microcomputer in governor circuit (1); if exceeded Protection parameters, cut off electric discharge metal-oxide-semiconductor (electric discharge MOS); discharge loop is disconnected, and protection lithium battery group is only put.
In certain embodiments, clever SH79F329 model single-chip microcomputer during the single-chip microcomputer in above-mentioned governor circuit (1) can adopt.This SH79F329 model single-chip microcomputer is with enhancement mode 8051 microprocessor of AFE (analog front end).And this SH79F329 model single-chip microcomputer is integrated with voltage sample AFE (analog front end), sampling pin external connection battery directly can obtain the information of voltage of single lithium battery, and 16 integrated ADC, make the sampling precision of voltage, electric current very high, ensure that the precision of SOC and SOH.In addition, this SH79F329 model single-chip microcomputer is also integrated with 12V High voltage output and controls pin, and can control discharge and recharge metal-oxide-semiconductor by Direct driver, this decreases peripheral components to a great extent, reduces PCB physical dimension.
Fig. 5 shows a kind of lithium battery group protection system in the utility model, and Fig. 5 is the structured flowchart of the lithium battery group protection system in an embodiment of the present utility model.As shown in Figure 5, this lithium battery group (10) protection system comprises lithium battery group (10) and above-mentioned lithium battery group charge and discharge protecting plate (20).This lithium battery group (10) can be widely used in notebook computer, uninterrupted power supply, automobile, security protection, communication, medical treatment, aviation/field such as space flight, military affairs.
This lithium battery group (10) protection system also comprises host computer (30) and portable intelligent device (40); host computer (30) is connected with lithium battery group charge and discharge protecting plate (20) row data communication of going forward side by side by SMBUS bus, and portable intelligent device (40) is connected with lithium battery group charge and discharge protecting plate (20) bluetooth row data communication of going forward side by side.Understandably, this host computer (30) can be common computer or PC computer etc., and this portable intelligent device (40) can be common smart mobile phone or panel computer etc.
Further, be provided with the software for checking battery state and service condition in this host computer (30), this software can also provide system parameter setting interface to arrange battery protection parameter for professional person.Same; APP for checking battery state and service condition is installed in this portable intelligent device (40); and the continuous renewal of function along with APP, can be implemented in equally on portable intelligent device (40) and battery protection parameter is set.Namely lithium battery group (10) protection system can make user can this lithium battery group (10) of multipath monitor and managment.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various change, combination and change.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (10)
1. a lithium battery group charge and discharge protecting plate, the lithium battery group of adapted is composed in series by multiple single lithium battery, comprises governor circuit (1), and the charging control circuit (2) be electrically connected with described governor circuit (1) and charge/discharge control circuit (3); It is characterized in that,
Also comprise for the battery information data of single lithium battery described in each of sampling sampling module (4), for host computer carry out data communication SMBUS communication port (5) and for carrying out the bluetooth module (6) of data communication with portable intelligent device;
Described sampling module (4), described SMBUS communication port (5) and described bluetooth module (6) are all electrically connected with described governor circuit (1).
2. lithium battery group charge and discharge protecting plate according to claim 1, it is characterized in that, described sampling module (4) comprising:
Voltage sampling circuit (41), is electrically connected with described governor circuit (1), for gathering the terminal voltage of single lithium battery described in each;
Current sampling circuit (42), is electrically connected with described governor circuit (1), for gathering the loop current of the multiple described single lithium battery of series connection;
Temperature sampling circuit (43), is electrically connected with described governor circuit (1), for gathering the battery core surface temperature of single lithium battery described in each.
3. lithium battery group charge and discharge protecting plate according to claim 1; it is characterized in that; described battery information data comprise the cell voltage of single lithium battery described in each, loop current and battery core surface temperature, and the charging and discharging state information of described lithium battery group and electric quantity data information.
4. lithium battery group charge and discharge protecting plate according to claim 1; it is characterized in that; described lithium battery group charge and discharge protecting plate also comprises the equalizing circuit (7) be connected between described governor circuit (1) and lithium battery group; wherein, each single lithium battery of described lithium battery group is connected in parallel at least one equalizing circuit (7).
5. lithium battery group charge and discharge protecting plate according to claim 1; it is characterized in that, described lithium battery group charge and discharge protecting plate also comprises the power supply circuits (8) for powering to described governor circuit (1), SMBUS communication port (5) and described bluetooth module (6).
6. lithium battery group charge and discharge protecting plate according to claim 1, is characterized in that, described governor circuit (1) comprises overcharge voltage comparison module (11), overdischarge voltage comparison module (12) and reference voltage source (13); Described reference voltage source (13) is respectively described overcharge voltage comparison module (11) and described overdischarge voltage comparison module (12) provides the reference voltage Gong comparing;
The output of described overcharge voltage comparison module (11) connects described charging control circuit (2), and the output of described overdischarge voltage comparison module (12) connects described charge/discharge control circuit (3).
7. lithium battery group charge and discharge protecting plate according to claim 6, is characterized in that, described charging control circuit (2) and described charge/discharge control circuit (3) include for the metal-oxide-semiconductor as circuit switching device.
8. lithium battery group charge and discharge protecting plate according to claim 1, is characterized in that, described governor circuit (1) comprises middle clever SH79F329 model single-chip microcomputer.
9. lithium battery group (10) protection system, comprises lithium battery group (10), it is characterized in that, also comprises lithium battery group charge and discharge protecting plate (20) described in any one of claim 1 to 8.
10. lithium battery group (10) protection system according to claim 9; it is characterized in that; also comprise host computer (30) and portable intelligent device (40); described host computer (30) is connected with described lithium battery group charge and discharge protecting plate (20) row data communication of going forward side by side by SMBUS bus, and described portable intelligent device (40) is connected with described lithium battery group charge and discharge protecting plate (20) bluetooth row data communication of going forward side by side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520022091.9U CN204465034U (en) | 2015-01-13 | 2015-01-13 | Lithium battery group charge and discharge protecting plate and lithium battery group protection system |
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| CN201520022091.9U CN204465034U (en) | 2015-01-13 | 2015-01-13 | Lithium battery group charge and discharge protecting plate and lithium battery group protection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016112718A1 (en) * | 2015-01-13 | 2016-07-21 | 深圳拓邦股份有限公司 | Lithium battery pack charge and discharge protection board and lithium battery pack protection system |
| CN106684828A (en) * | 2016-12-28 | 2017-05-17 | 深圳市盛弘电气股份有限公司 | Battery over-charge and over-discharge protection method and system |
| CN107742916A (en) * | 2017-11-30 | 2018-02-27 | 深圳市科卫泰实业发展有限公司 | A kind of universal lithium battery group protection circuit and universal lithium battery group |
-
2015
- 2015-01-13 CN CN201520022091.9U patent/CN204465034U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016112718A1 (en) * | 2015-01-13 | 2016-07-21 | 深圳拓邦股份有限公司 | Lithium battery pack charge and discharge protection board and lithium battery pack protection system |
| CN106684828A (en) * | 2016-12-28 | 2017-05-17 | 深圳市盛弘电气股份有限公司 | Battery over-charge and over-discharge protection method and system |
| CN106684828B (en) * | 2016-12-28 | 2019-03-22 | 深圳市盛弘电气股份有限公司 | A kind of over-charging of battery Cross prevention method and system |
| CN107742916A (en) * | 2017-11-30 | 2018-02-27 | 深圳市科卫泰实业发展有限公司 | A kind of universal lithium battery group protection circuit and universal lithium battery group |
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