CN205621814U - Power battery system safety arrangement and power battery system - Google Patents
Power battery system safety arrangement and power battery system Download PDFInfo
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- CN205621814U CN205621814U CN201620367408.7U CN201620367408U CN205621814U CN 205621814 U CN205621814 U CN 205621814U CN 201620367408 U CN201620367408 U CN 201620367408U CN 205621814 U CN205621814 U CN 205621814U
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- cell system
- electrokinetic cell
- bms
- control module
- safety guard
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a power battery system safety arrangement and power battery system, this power battery system include the group battery of being established ties and being constituted by a plurality of battery module to and safety arrangement, safety arrangement includes: a plurality of controllable switch and BMS, each controllable switch are used for connecting two adjacent battery module respectively, BMS is including insulating detection module and control module, insulating detection module's signal input part connect power battery system just, the negative pole, the all controllable switch of control module control connection. When the defective insulation of battery system, the disconnection of the all controllable switch of control module control makes battery system splitting to reaching the guard action to battery module, can promoting battery reliability of protection in great degree ground, the protection effect has obtained great improvement. And, only use BMS in order to carry out information acquisition, failure determination and failure removal, guaranteed the reliable processing of signal.
Description
Technical field
This utility model relates to a kind of electrokinetic cell system safety guard and a kind of electrokinetic cell system.
Background technology
Along with the fast development of electric automobile, the most increasing to the demand of power battery module, it is considered to its
Safety in utilization, current conventional groups of electrokinetic cell system, use major loop serial fuse and contact more
The method of device, realizes the purpose of the safeguard protection of system.But from the point of view of its protection domain, this quasi-tradition is protected
The mode of protecting is often difficult to reach preferable protected effect, particularly when faults such as internal system are short-circuited,
Which almost cannot play any protective effect.
Electric automobile power battery fire accident in nationwide frequently occurs in recent years, and causes set of cells to rise
The maximum hazard factor of fire be make moist, soak, internal short-circuit that the factor such as electrolyte leakage causes, therefore,
How the safety for electrokinetic cell system itself is effectively protected and prevents, and is particularly likely to occur
All kinds of short circuit accidents, most important to safety, reliability and the economy improving system operation.
Utility model content
The purpose of this utility model is to provide a kind of electrokinetic cell system safety guard, in order to solve tradition
The best problem of the protected effect of cell safety protected mode.This utility model provides a kind of power current simultaneously
Cell system.
For achieving the above object, scheme of the present utility model includes: a kind of electrokinetic cell system safeguard protection dress
Put, including:
Several gate-controlled switches: each gate-controlled switch is respectively used to connect adjacent two electricity in electrokinetic cell system
Pond module；
BMS: this BMS includes insulation monitoring module and control module, the signal of described insulation monitoring module
Input connects the positive and negative electrode of described electrokinetic cell system, and it is all of controlled that described control module controls connection
Switch.
Described safety guard also includes alarm, and described control module controls to connect described alarm.
On the main current supply circuit of described electrokinetic cell system, string is provided with a main switch, and described control module controls
Connect described main switch.
Described safety guard also includes a wireless communication module, and described BMS connects described channel radio
News module；Or there is one on described BMS for the CAN communication interface being connected with entire car controller communication.
On the main current supply circuit of described electrokinetic cell system, string is provided with fuse.
A kind of electrokinetic cell system, including by multiple battery modules set of cells in series, also includes safety
Protection device, described safety guard includes:
Several gate-controlled switches: each gate-controlled switch is respectively used to connect adjacent two electricity in electrokinetic cell system
Pond module；
BMS: this BMS includes insulation monitoring module and control module, the signal of described insulation monitoring module
Input connects the positive and negative electrode of described electrokinetic cell system, and it is all of controlled that described control module controls connection
Switch.
Described safety guard also includes alarm, and described control module controls to connect described alarm.
On the main current supply circuit of described electrokinetic cell system, string is provided with a main switch, and described control module controls
Connect described main switch.
Described safety guard also includes a wireless communication module, and described BMS connects described channel radio
News module；Or there is one on described BMS for the CAN communication interface being connected with entire car controller communication.
On the main current supply circuit of described electrokinetic cell system, string is provided with fuse.
In electrokinetic cell system that this utility model provides and safety guard, controlled open including several
Closing, each gate-controlled switch is used for connecting the battery module that any two is adjacent, so, all of adjacent two
Being respectively connected with gate-controlled switch between battery module, the signal input part of the insulation monitoring module in BMS connects
The both positive and negative polarity of this battery system, for detecting the insulating properties of this battery system, when battery system insulation not
Time good, the control module of BMS controls all of gate-controlled switch and disconnects, and makes battery system off-the-line, thus reaches
To protective effect to battery module, in this way compared to traditional battery protection mode, it can be relatively
Big degree ground promotes the reliability of battery protection, and protected effect is greatly improved.Further, this protection
The device only one of which for Insulation monitoring in device, for controlling the device also only one of which of output, and
And for Insulation monitoring device and for control output device be same device BMS, so,
Only use BMS as the control core parts of system, possess information gathering, fault verification and failure removal
Etc. function, compared to traditional mode using entire car controller and BMS to be controlled simultaneously, controlled
Journey is simplified, and reduces the letter caused due to the loaded down with trivial details of the long of signal transmission distance and signal processing
Number probability being interfered, it is ensured that the reliability transmission of signal and process.It addition, this protection device is excellent
Change traditional protection scheme, become passive protection and protect into active, internal risks potential for system is contained in
A-stage, greatly reduces the possibility that system itself has an accident, it is ensured that system use safety,
Reliability and economy.
It addition, the device being traditionally used for Insulation monitoring and control is more, the signal transmission cable between device
More, in safety guard of the present utility model, only one of which device carries out Insulation monitoring and control, fall
The low use length of signal cable, it is ensured that the transmitting of signal, reduce other signal disturbing can
Energy property, it is ensured that Insulation monitoring and the reliability of control.
Accompanying drawing explanation
Fig. 1 is electrokinetic cell system safety guard fundamental diagram；
Fig. 2 is the annexation schematic diagram of cell；
Fig. 3 is the structural representation of electrokinetic cell system safety guard；
Fig. 4 is that the discharge loop between cell analyzes schematic diagram；
Fig. 5 is the control flow chart of electrokinetic cell system safety guard.
Detailed description of the invention
The utility model is described in more detail below in conjunction with the accompanying drawings.
Safety guard embodiment
This electrokinetic cell system includes set of cells, and for set of cells is controlled and the peace of safeguard protection
Full protection device.It is lithium battery under normal circumstances due to the cell in electrokinetic cell system, so, this
The cell in electrokinetic cell system in embodiment is as a example by lithium battery.
As it is shown in figure 1, the signal input part that this safety guard includes BMS, BMS connects set of cells
Positive and negative electrode, utilize corresponding signal pickup assembly, such as: current transformer, voltage transformer etc. fill
Put the relevant information gathering set of cells, to carry out the Insulation monitoring of set of cells.Insulation monitoring due to set of cells
Belonging to routine techniques, operation principle and the work process of its Insulation monitoring belong to prior art, such as Shen
Please number be 201510266542.8 Chinese patent application file disclosed in the technology relevant to Insulation monitoring
Scheme, so, the most no longer illustrate.
This safety guard includes the gate-controlled switch being arranged between adjacent battery modules, as in figure 2 it is shown,
Between each two adjacent battery modules, string is provided with a gate-controlled switch, then, if set of cells is by n battery
Module string sets and forms, then, the number of gate-controlled switch is just for n-1.One battery module can be only by one
Individual cell is constituted, it is also possible in series by several cells, in the present embodiment, and an electricity
Pond module is only made up of a cell, then, between each two neighboring unit cell, just string is provided with one
Gate-controlled switch.Gate-controlled switch can be general contactless contactor, such as relay, it is also possible to is other
Full-controlled switch device, such as: IGBT etc..
This BMS includes insulation monitoring module and control module, and the signal input part of insulation monitoring module connects
The positive and negative electrode of this battery system, insulation monitoring module is connected with control module, and control module utilizes output
Control circuit to control to connect all of gate-controlled switch.The insulation monitoring module of BMS is according to the information collected
Carrying out Insulation monitoring, when set of cells defective insulation, control module controls the gate-controlled switch between cell
Disconnect, make set of cells off-the-line, thus reach the protective effect to each cell.Insulation monitoring module and
Control module is the hardware comprising modules in BMS, and insulation monitoring module is equivalent to a processor, internal
It is provided with corresponding software program, carries out insulation inspection by this program and the corresponding data information that collects
Survey；Control module is equivalent to a controller, realizes the control of gate-controlled switch according to the result of Insulation monitoring.
It addition, as shown in figures 2 and 3, in order to whole set of cells is controlled, in the main power supply of set of cells
On loop, also string is provided with main switch Kp, and control module controls to connect this main switch Kp.And, in order to
Ensureing the reliable and secure operation of power battery pack, on main current supply circuit, also string is provided with a fuse.Also have
It is exactly that, in order to report to the police in time when there is defective insulation, to remind driver's machine, this safeguard protection fills
Putting and also include alarm, control module controls to connect alarm.
The control core parts of this safety guard are BMS, and BMS realizes the collection number according to set of cells
It is believed that breath carries out Insulation monitoring, insulation fault judges, and the control of gate-controlled switch is to realize failure removal.
It addition, BMS sometimes for by corresponding data information transfer to entire car controller, then, BMS just needs
To carry out communication with entire car controller, to have two kinds of communication modes: the first: it is provided with a CAN on BMS
Communication interface, is connected with entire car controller communication by CAN；The second is wireless communication mode,
I.e. BMS connects a wireless communication module, and such as 4G wireless communication module, by these wireless telecommunications
Module and entire car controller realize data communication.
This example considers battery system actual operating mode, is equipped with scheme for GPF (General Protection False, only takes one or two
Plant discharge loop schematically illustrate as principle, as shown in Figure 4.
When BMS carries out Insulation monitoring, fault verification and controls output, the work of this safety guard
Make process as follows:
When battery status each in system is normal, and when system insulation is normal, all controlled between cell
Switch all closes, and battery system outfan normally exports；
When system because making moist, soaking, the factor such as electrolyte leakage, when defective insulation occurs, i.e. occur such as figure
During any form of discharge loop shown in 4, BMS is first depending on system running state to carry out actively judging,
Then BMS controls alarm immediately and reports to the police, and cuts off between each two neighboring unit cell the most immediately
Gate-controlled switch so that each cell off-the-line, cut off any form of discharge loop shown in Fig. 4, thus
Reach the purpose of protection.
When BMS and entire car controller are controlled jointly, the work process of this safety guard is as follows:
As it is shown in figure 5, when in system each battery status normal, and when system insulation is normal, cell it
Between all gate-controlled switches all close, battery system outfan normally exports；
When system because making moist, soaking, the factor such as electrolyte leakage, when defective insulation occurs, i.e. occur such as figure
During any form of discharge loop shown in 4, BMS is first depending on system running state to carry out actively judging,
And sending warning message by CAN communication to entire car controller, prompting driver should take to arrange accordingly immediately
Executing, when when receiving entire car controller and replying or not receiving reply in the setting time, BMS controls report immediately
Alert device is reported to the police, and cuts off the gate-controlled switch between each two neighboring unit cell the most immediately so that each list
Body battery off-the-line, cuts off any form of discharge loop shown in Fig. 4, thus reaches the purpose of protection.
Electrokinetic cell system embodiment
This electrokinetic cell system includes power battery pack, and safety guard, due to power battery pack and
Safety guard there has been detailed description, the most specifically in above-mentioned safety guard embodiment
Bright.
It is presented above specific embodiment, but this utility model is not limited to described embodiment.
Basic ideas of the present utility model are above-mentioned basic scheme, for those of ordinary skill in the art, according to
Teaching of the present utility model, designs the model of various deformation, formula, parameter are not required to spend creativeness
Work.The change that in the case of without departing from principle of the present utility model and spirit, embodiment carried out, repair
Change, replace and modification still falls within protection domain of the present utility model.
Claims (10)
1. an electrokinetic cell system safety guard, it is characterised in that including:
Several gate-controlled switches: each gate-controlled switch is respectively used to connect adjacent two electricity in electrokinetic cell system
Pond module；
BMS: this BMS includes insulation monitoring module and control module, the signal of described insulation monitoring module
Input connects the positive and negative electrode of described electrokinetic cell system, and it is all of controlled that described control module controls connection
Switch.
Electrokinetic cell system safety guard the most according to claim 1, it is characterised in that institute
Stating safety guard and also include alarm, described control module controls to connect described alarm.
Electrokinetic cell system safety guard the most according to claim 1, it is characterised in that institute
Stating string on the main current supply circuit of electrokinetic cell system and be provided with a main switch, described control module controls to connect institute
State main switch.
Electrokinetic cell system safety guard the most according to claim 1, it is characterised in that institute
Stating safety guard and also include a wireless communication module, described BMS connects described wireless communication module；
Or there is one on described BMS for the CAN communication interface being connected with entire car controller communication.
Electrokinetic cell system safety guard the most according to claim 1, it is characterised in that institute
State string on the main current supply circuit of electrokinetic cell system and be provided with fuse.
6. an electrokinetic cell system, including by multiple battery modules set of cells in series, its feature
It is, also includes that safety guard, described safety guard include:
Several gate-controlled switches: each gate-controlled switch is respectively used to connect adjacent two electricity in electrokinetic cell system
Pond module；
BMS: this BMS includes insulation monitoring module and control module, the signal of described insulation monitoring module
Input connects the positive and negative electrode of described electrokinetic cell system, and it is all of controlled that described control module controls connection
Switch.
Electrokinetic cell system the most according to claim 6, it is characterised in that described safeguard protection fills
Putting and also include alarm, described control module controls to connect described alarm.
Electrokinetic cell system the most according to claim 6, it is characterised in that described electrokinetic cell system
On the main current supply circuit of system, string is provided with a main switch, and described control module controls to connect described main switch.
Electrokinetic cell system the most according to claim 6, it is characterised in that described safeguard protection fills
Putting and also include a wireless communication module, described BMS connects described wireless communication module；Or described BMS
On have one for the CAN communication interface being connected with entire car controller communication.
Electrokinetic cell system the most according to claim 6, it is characterised in that described electrokinetic cell system
On the main current supply circuit of system, string is provided with fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620367408.7U CN205621814U (en) | 2016-04-27 | 2016-04-27 | Power battery system safety arrangement and power battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620367408.7U CN205621814U (en) | 2016-04-27 | 2016-04-27 | Power battery system safety arrangement and power battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205621814U true CN205621814U (en) | 2016-10-05 |
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ID=57028438
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620367408.7U Active CN205621814U (en) | 2016-04-27 | 2016-04-27 | Power battery system safety arrangement and power battery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206306A (en) * | 2016-12-20 | 2018-06-26 | 财团法人工业技术研究院 | Battery management system and method thereof |
-
2016
- 2016-04-27 CN CN201620367408.7U patent/CN205621814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206306A (en) * | 2016-12-20 | 2018-06-26 | 财团法人工业技术研究院 | Battery management system and method thereof |
| CN108206306B (en) * | 2016-12-20 | 2020-03-27 | 财团法人工业技术研究院 | Battery management system and method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |