CN204597510U - A kind of battery management system being provided with safety protective circuit - Google Patents
A kind of battery management system being provided with safety protective circuit Download PDFInfo
- Publication number
- CN204597510U CN204597510U CN201520102320.8U CN201520102320U CN204597510U CN 204597510 U CN204597510 U CN 204597510U CN 201520102320 U CN201520102320 U CN 201520102320U CN 204597510 U CN204597510 U CN 204597510U
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- circuit
- battery management
- management system
- safety protective
- discharge
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of battery management system being provided with safety protective circuit, the described battery management system being provided with safety protective circuit comprises interconnective battery pack, charger, governor circuit, testing circuit, external circuit, described governor circuit comprises battery management control device, discharge and recharge major loop, described discharge and recharge major loop negative pole end is provided with the charge power metal-oxide-semiconductor of the one group of series connection be connected in parallel and the discharge power metal-oxide-semiconductor of one group of series connection, the battery management control system of what the utility model provided be provided with safety protective circuit, by being provided be connected in parallel one group charging controls MOSFET at discharge and recharge major loop negative pole end and managing and one group of control of discharge MOSFET managing, realize reliably carrying out overcharge, the protection of overdischarge, guarantee the safety of battery pack.
Description
Technical field
The utility model relates to battery power field, particularly relates to a kind of battery management system being provided with safety protective circuit.
Background technology
The battery protecting plate being directed to energy storage of current home sale is mainly used in mobile base station, electric bicycle, photovoltaic energy storage system etc.Such baffle structure is all integral type, and the balanced loop of sampling and control and battery is all made on one block of plate, and such plank exists some problems: coefficient of safety is low, and plank power consumption is large, and well do not isolate, sampling precision is low.The protection reliability of storage battery and equipment is lower.
Current battery baffle mainly controls charging and discharging by MOSFET (being commonly called as metal-oxide-semiconductor); when the charger capacitance of user is selected bigger than normal; the impulse current of charging transient is easy to metal-oxide-semiconductor to puncture; its result overcharges to battery exactly; the lighter causes damage, and severe one causes blast so that casualties.Different according to the capacity of load, selected battery pack quantity is also different.The energy-storage system of commonplace 10KW, needs the Cascade System of 4 2.5KW to form, and the middle communication inevitably needed between each unit, according to the baffle of current domestic integral type, probably occurs loss of data during communication, the faults such as false alarm.
Utility model content
In view of the problems referred to above that current battery safeguard protection exists, the utility model provides a kind of battery management system being provided with safety protective circuit, can realize the protection reliably carrying out overcharge, overdischarge, guarantee the safety of battery pack.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of battery management system being provided with safety protective circuit; the described battery management system being provided with safety protective circuit comprises interconnective battery pack, charger, governor circuit, testing circuit; external circuit; described governor circuit comprises battery management control device, discharge and recharge major loop, and described discharge and recharge major loop negative pole end is provided with the charge power metal-oxide-semiconductor of the one group of series connection be connected in parallel and the discharge power metal-oxide-semiconductor of one group of series connection.
According to an aspect of the present utility model, described battery pack is lithium battery group.
According to an aspect of the present utility model, described battery pack comprises some pieces of cells and balanced return circuit module, and described balanced return circuit module is made up of cell, insurance resistance, switch, and the switch place of described balanced return circuit module is provided with warning circuit.
According to an aspect of the present utility model, described external circuit is provided with fuse and air switch, the voltage detecting circuit at described fuse and air switch two ends.
According to an aspect of the present utility model, described charger is provided with DC power supply output circuit.
According to an aspect of the present utility model, described battery management control device comprises usb interface module.
According to an aspect of the present utility model, described testing circuit comprises the total voltage detection circuit on current detection circuit, battery cell voltage detecting circuit, major loop, and described current detection circuit is arranged on discharge and recharge major loop.
The advantage that the utility model is implemented: by being provided be connected in parallel one group charging controls MOSFET at discharge and recharge major loop negative pole end and managing and one group of control of discharge MOSFET managing, once puncture uncontrollable, the MOSFET pipe of redundancy is also had to carry out safety cut-off, ensure that battery can not super-charge super-discharge so that threaten the safety of personal property, substantially increase fail safe.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the simplified schematic diagram being provided with the battery management system of safety protective circuit described in the utility model;
Fig. 2 is the structural representation being provided with the battery management system of safety protective circuit described in the utility model;
Fig. 3 is the discharge and recharge major loop simplified schematic diagram being provided with the battery management system of safety protective circuit described in the utility model;
Fig. 4 is the balanced loop simplified schematic diagram being provided with the battery pack of the battery management system of safety protective circuit described in the utility model;
Fig. 5 is the warning circuit simplified schematic diagram being provided with the balanced loop of the battery pack of the battery management system of safety protective circuit described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5; a kind of battery management system being provided with safety protective circuit; the described battery management system being provided with safety protective circuit comprises interconnective battery pack 1, charger 5, governor circuit 2, testing circuit 3; external circuit 4; described governor circuit comprises battery management control device 21, discharge and recharge major loop 22, and described discharge and recharge major loop 22 negative pole end is provided with the charge power metal-oxide-semiconductor 221 of the one group of series connection be connected in parallel and the discharge power metal-oxide-semiconductor 222 of one group of series connection.
The charge power metal-oxide-semiconductor 221 of being connected by the group be connected in parallel at discharge and recharge major loop 22 and the discharge power metal-oxide-semiconductor 222 of one group of series connection, substantially increase fail safe, once puncture uncontrollable, another MOSFET pipe on loop can cut off safely, to ensure that battery can not super-charge super-discharge, threaten the safety of personal property.
In actual applications, discharge and recharge major loop can be arranged one group of current detection circuit 223, sampling precision reaches 0.25%, and during the raw fault that prevents that riches all the way, another test point can be measured by the continual electric current to system, can the situation of supervisory circuit at any time.
Testing circuit 3 is included in total voltage detection circuit 32 on voltage detecting circuit 31 on each cell and major loop, this design employs the sampling and measuring of monomer voltage summation and stagnation pressure respectively, and respectively these two groups of data are compared by continual, when unit interval internal pressure differences reaches certain value, master control will point out alarm signal, object is the judgement to external circuit 4 fault, prevents cable from loosening, fault that virtual connection and other reasons cause.
External circuit 4 is provided with fuse 41 and air switch 42, and described testing circuit 3 is included in the voltage detecting circuit 33 at described fuse 41 and air switch 41 two ends, judging out of order reason in time when external circuit breaks down, can find out fault point.
Charger 5 on discharge and recharge major loop 22 is provided with direct-current power output module 51, is generally 12V or 24V DC power supply and exports, when requiring to add a little skinny device, serve as the effect of stabilized voltage power supply, not needing additional designs independently power supply.
Battery management control device 21 comprises a usb interface module 211, when deep battery discharge, electric discharge is continued in order to not allow battery, adopt the voltage-activated master control borad of a USB DC5V, control charge power MOSFET pipe 221 is closed to charge the battery, can also communicate with host computer simultaneously, play the effect of monitoring.
Battery management control device 221 also can arrange 4 digital quantity input channels and 8 digital quantity output channels, when system is used in large-scale energy-storage system, may with the device talk of upper level or next stage, can prevent when CAN breaks down, some critical datas are not transmitted in time and are caused misoperation, guarantee whole system property safe and reliable to operation.
Battery pack 1 is lithium battery group, comprise some pieces of cells and balanced loop 11, described balanced loop is the series circuit of cell, resistance, switch composition, the equalizer switch place in described balanced loop 11 is provided with alarm module 111, once switch breaks down, will warning reminding user, breaking down in balanced loop, can get rid of in time.In actual applications, described balanced loop can be the loop being connected an electric capacity with battery with multiple switch, by the grading control battery of multiple switch, equilibrium is carried out to capacitor charge and discharge, balanced safety system is improved, avoids the heating power consumption of resistance simultaneously.
In this enforcement, battery management control device 21 adopts battery charging and discharging management control chip conventional on the market.
The advantage that the utility model is implemented: by being provided with the method for one group of charging control MOSFET pipe and the one group of control of discharge MOSFET pipe be connected in parallel at discharge and recharge major loop negative pole end, once puncture uncontrollable, the MOSFET pipe of redundancy is also had to carry out safety cut-off, ensure that battery can not super-charge super-discharge so that threaten the safety of personal property, substantially increase fail safe.
The above; be only embodiment of the present utility model; but protection range of the present utility model is not limited thereto; the technical staff of any skilled is in technical scope disclosed in the utility model; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of described claim.
Claims (7)
1. one kind is provided with the battery management system of safety protective circuit; it is characterized in that; the described battery management system being provided with safety protective circuit comprises interconnective battery pack, charger, governor circuit, testing circuit; external circuit; described governor circuit comprises battery management control device, discharge and recharge major loop, and described discharge and recharge major loop negative pole end is provided with the charge power metal-oxide-semiconductor of the one group of series connection be connected in parallel and the discharge power metal-oxide-semiconductor of one group of series connection.
2. the battery management system being provided with safety protective circuit according to claim 1, is characterized in that, described battery pack is lithium battery group.
3. the battery management system being provided with safety protective circuit according to claim 1; it is characterized in that; described battery pack comprises some pieces of cells and balanced return circuit module; described balanced return circuit module is made up of cell, insurance resistance, switch, and the switch place of described balanced return circuit module is provided with warning circuit.
4. the battery management system being provided with safety protective circuit according to claim 1, is characterized in that, described external circuit is provided with fuse and air switch, the voltage detecting circuit at described fuse and air switch two ends.
5. the battery management system being provided with safety protective circuit according to claim 1, is characterized in that, described charger is provided with DC power supply output circuit.
6. the battery management system being provided with safety protective circuit according to claim 1, is characterized in that, described battery management control device comprises usb interface module.
7. according to the battery management system being provided with safety protective circuit one of claim 1 to 6 Suo Shu; it is characterized in that; described testing circuit comprises the total voltage detection circuit on current detection circuit, battery cell voltage detecting circuit, major loop, and described current detection circuit is arranged on discharge and recharge major loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102320.8U CN204597510U (en) | 2015-02-12 | 2015-02-12 | A kind of battery management system being provided with safety protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102320.8U CN204597510U (en) | 2015-02-12 | 2015-02-12 | A kind of battery management system being provided with safety protective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597510U true CN204597510U (en) | 2015-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102320.8U Expired - Fee Related CN204597510U (en) | 2015-02-12 | 2015-02-12 | A kind of battery management system being provided with safety protective circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597510U (en) |
-
2015
- 2015-02-12 CN CN201520102320.8U patent/CN204597510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20181022 Granted publication date: 20150826 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20211022 Granted publication date: 20150826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20190212 |