CN201293829Y - Battery monitoring system - Google Patents
Battery monitoring system Download PDFInfo
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- CN201293829Y CN201293829Y CNU2008202123580U CN200820212358U CN201293829Y CN 201293829 Y CN201293829 Y CN 201293829Y CN U2008202123580 U CNU2008202123580 U CN U2008202123580U CN 200820212358 U CN200820212358 U CN 200820212358U CN 201293829 Y CN201293829 Y CN 201293829Y
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- battery
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- equalizer
- manager
- monitoring system
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Abstract
The utility model provides a battery monitoring system, which comprises a battery manager and a battery equalizer, the battery manager and the battery equalizer comprise a first control unit and a second control unit which are independent, the battery manager and the battery equalizer respectively comprise a first CAN communication module and a second CAN communication module which are mutually communicated, and the battery manager and the battery equalizer are connected through a CAN bus and utilize a uniform CAN protocol. Because the battery equalizer is additionally equipped with an extended port and the battery manager, the battery equalizer and an internal resistance tester are connected through the CAN bus, instruments and equipment can keep fine communication and fine coordinate relationship, thereby guaranteeing reliability of the system.
Description
Technical field
The utility model relates to a kind of battery monitoring system, relates in particular to a kind of battery monitoring system based on battery manager.
Background technology
At present, electric vehicle engineering and hybrid vehicle technical development are rapid, power for automobile thereby its power source adopts a plurality of batteries are cascaded, thus, the number of battery cells that exists is more, thereby also complicated for the monitoring of the state of its battery and performance.
In the prior art, use battery manager and internal resistance of cell tester to finish respectively for the monitoring of battery performance, but the monitoring to battery is all carried out separately, monitoring for cell voltage, electric current, temperature, humidity all realizes by battery manager, then is to realize by internal resistance test device for the monitoring of the internal resistance of cell, and is separate each other, there is not coordination function, the battery monitoring system function singleness of Chan Shenging therefrom, reliability is not high, poor expandability.In addition, because the number of battery cells on electric automobile and the hybrid vehicle is more, not high in order to overcome the battery capacity consistance, the general at present capacity that adopts the method for carrying out equalizaing charge for the lower battery of battery capacity to improve battery, thereby improve the capacity of car load battery, therefore, in existing battery monitoring system, increased battery equalizer.Yet all work independently between these all monitoring instruments and the equipment, test separately and control, so that when each instrument is worked simultaneously, coordination performance each other is very poor, interference each other is very big, tends to cause test data inaccurate, thereby produces dysgenic consequence.For example, when battery equalizer is given the lower battery charge of a certain joint capacity, if this moment, battery manager carried out voltage sample to this batteries simultaneously, owing to do not have the function of mutual coordination between battery manager and the battery equalizer, therefore the data that obtain then are the results of a mistake, after battery manager obtains these wrong data, just may send wrong work order, produce wrong action, thereby cause fatal danger.
In addition, when working alone between each instrument, may also can there be following shortcoming owing to lack harmony in the monitoring system between each equipment:
(1) when certain core component breaks down in the monitoring system, if no standby system, then the data that this core component detected then can be in the state that can't monitor.
(2) each instrument image data voluntarily can't be carried out data sharing, causes the amount of redundancy of data big.
(3) the identical device of function in each instrument because module can't be multiplexing, have improved and has purchased device cost.
(4) when certain instrument breaks down, other instruments can not be monitored and to its control it, and itself and whole monitoring system are broken away from.
(5) each instrument is powered separately, causes power lead quantity to increase, and makes the cabling of car load complicated more.
The utility model content
In view of this, a purpose of the present utility model is to provide a kind of and has high reliability, high scalability, and the battery monitoring system of coordinability.
For achieving the above object, the technical solution of the utility model is:
A kind of battery monitoring system, comprise: battery manager and battery equalizer, described battery manager and battery equalizer include independently first, second control module, described battery manager and battery equalizer include first, second CAN communication module that is used for communicating each other respectively, be connected by the CAN bus between described battery manager and the battery equalizer, and use unified CAN agreement.
As seen from the above technical solutions, a kind of battery monitoring system that the utility model provides, because battery equalizer has increased the expansion mouth, the wire harness that makes each instrument adopt is less relatively, reduced the complicacy of car load wire harness, can realize the expansion of systemic-function simultaneously by the expansion mouth of battery equalizer easily, increase the extensibility of system.And connect by the CAN bus between battery manager, battery equalizer and the internal resistance test device, and adopt unified CAN agreement to carry out communication, therefore system has stronger compatibility, and then can keep good rapport between each instrument or the equipment, thereby guaranteed the reliability of system.
Description of drawings
Fig. 1 is the structural representation of the utility model battery monitoring system;
Fig. 2 is the structural representation of a kind of embodiment of the utility model battery monitoring system;
Fig. 3 is the utility model battery monitoring system workflow diagram.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of battery monitoring system that the utility model provides, with battery manager 1 is core component, signaling transfer point by battery equalizer 2 is realized battery manager 1, internal resistance test device 3 waits being connected of other equipment and car load power brick, realization is with battery manager 1, battery equalizer 2, internal resistance of cell tester 3 is the multi-functional battery monitor system of one, and, system is by the CAN bus communication, when battery equalizer 2 or internal resistance test device 3 break down, its fault-signal can send to battery manager 1 by CAN, thereby battery manager 1 can be controlled its battery equalizer that breaks down 2 or internal resistance test device 3 by CAN bus transmitting control commands and restart or quit work, thereby avoids owing to the make mistakes appearance of the adverse consequences that produces of equipment.
The battery monitoring system that the utility model provides comprises: battery manager 1, battery equalizer 2, and by the expansion mouthful internal resistance test device of expanding 3, described battery manager 1, battery equalizer 2, and internal resistance test device 3 includes independently first, the second and the 3rd control module (11,21,31), wherein, described battery manager 1, battery equalizer 2 and internal resistance test device 3 include respectively be used for communicating each other first, the second and the 3rd CAN communication module (12,22,32), described battery manager 1, connect by the CAN bus between battery equalizer 2 and the internal resistance test device 3, and use unified CAN agreement, realize described battery manager 1 by the CAN bus, communication between battery equalizer 2 and the internal resistance test device 3, making can co-ordination between each instrument.
The further technical scheme of the utility model is:
Described battery equalizer 2 includes a plurality of expansions mouths, and described battery manager 1 and described internal resistance test device 3 are forwarded to the mesuring battary bag by described expansion mouth respectively.
And described expansion also is used to expand other instrument and equipments that are used to monitor the power brick state mouthful except expansion battery manager 1 and internal resistance test device 3, for example can be used for leakage current detect equipment of monitoring power brick electric leakage situation or the like.
Described battery equalizer 2 also comprises second element circuit 23, described second element circuit 23 comprises: the DC module, be connected the single battery gating module between power brick and the described DC module, and the 2nd CAN communication module 22, wherein, described DC module is used for the one or more battery charge of while to power brick under the control of described battery manager; Described single battery gating module makes the battery that voltage is lower in the described power brick link to each other with described DC module under the control of described battery manager 1, realizes the charging of described DC module to described battery; Described the 2nd CAN communication module 22 be separately positioned on described battery manager 1 and internal resistance test device 3 in first link to each other with the 3rd CAN communication module (12,32), be used to realize and described battery manager 1 and described internal resistance test device 3 between duplex signaling.
Described battery manager 1 also includes first module circuit 13, and described first module circuit 13 comprises: voltage sampling circuit, current sampling circuit, humidity sample circuit, temperature sampling circuit, a CAN communicating circuit, and power circuit; Described internal resistance test device 3 also includes the 3rd element circuit 33, and described the 3rd element circuit 33 comprises: sinusoidal wave generation module, power factor are calculated module, and the signal amplification module.
Wherein, first control module 11 that comprises in the described battery manager is used to control battery manager 1 and realizes the sampling of each sample circuit to power brick, and handles the information that sends and receive by the CAN bus.Voltage sampling circuit, current sampling circuit, humidity sample circuit and temperature sampling circuit are by being connected to the expansion mouth of described battery equalizer, thereby realize sampling and monitoring to power brick voltage, electric current, temperature and whole bag humidity, a described CAN communicating circuit be separately positioned on described battery equalizer 2 and internal resistance test device in 3 second link to each other with the 3rd CAN communication module (22,32), be used to realize and described battery equalizer 2 and described internal resistance test device 3 between duplex signaling.
The 3rd control module 31 that described internal resistance test device comprises is used to detect the internal resistance situation of power brick battery, and differentiates its whether deterioration, simultaneously described discriminant information is fed back to battery manager 1.Described the 3rd communication module 32 links to each other with first and second CAN communication modules (12,22) in being separately positioned on described battery manager 1 and battery equalizer 2, be used to realize and described battery equalizer 2 and described battery manager 1 between duplex signaling.Described sinusoidal wave generation module, power factor calculate module, and the signal amplification module is used to gather the internal resistance information of power brick battery, and this technology is understood by those of ordinary skills, is known technology, gives unnecessary details no longer one by one here.
In the entire cell monitoring system, battery manager 1 is the core of total system, the main monitoring that realizes power brick single battery voltage, electric current, temperature and whole bag humidity of battery manager 1, and be responsible for and Full Vehicle System is carried out communication.Battery equalizer 2 is mainly used in the relatively low battery of capacity is carried out equalizaing charge, and powerful expanded function is provided, and is beneficial to the expansion of other instruments, thereby improves the function of system.Internal resistance test device 3 is mainly used to measure the internal resistance of power brick single battery, because internal resistance is an extremely important parameter of reflection deterioration of battery degree.
Just the course of work of this battery monitoring system is done simple a summary now:
Internal resistance test device 3 carries out work by the instruction that starts or stops that the CAN bus receives battery manager 1, in detecting power brick during the serious deterioration of a certain batteries, can testing result be fed back to battery manager 1 by the CAN bus, battery manager 1 will send to the CAN network of car load by the CAN bus with the form of frame after the resulting packing data, and which batteries car load just can demonstrate very easily by failure diagnostic apparatus needs replacing.
As Fig. 3, the utility model also provides a kind of management method of battery monitoring system, is intended to improve the coordination function and the practicality of this battery monitoring system.The management method of a kind of battery monitoring system that the utility model provides comprises following several steps:
Battery charges or controlled before car load sends alerting signal in 2 pairs of power brick of battery manager 1 control battery equalizer, battery manager 1 will judge also whether internal resistance test device 3 has sent the internal resistance alerting signal to battery manager 1, when internal resistance test device 3 when battery manager 1 has sent the internal resistance alerting signal, battery manager 1 sends alerting signal by the CAN communication bus to car load; When internal resistance test device 3 does not have when battery manager 1 sends the internal resistance alerting signal, battery manager 1 carry out battery status when normal in 2 pairs of power brick of control battery equalizer battery charge, or battery status is when undesired, and battery manager 1 control is sent alerting signal to car load.
To monitor the power brick battery status normal when battery manager 1, battery manager 1 is judged need be when battery charges in the power brick, battery manager 1 sends charging signals to battery equalizer 2, when battery equalizer 2 receives described charging signals, battery equalizer 2 at first must detect self hardware, detect errorless after, then carry out charging operations, otherwise, do not carry out charging operations.
In order further to achieve the above object, the further technical scheme of the utility model is:
The course of work of described battery manager comprises following several steps:
1) battery manager 1 detects the state of power brick;
2) when battery manager 1 receives the internal resistance alerting signal, described battery manager 1 sends alerting signal to car load, and stops the status detection of 1 pair of power brick of described battery manager;
3) when battery manager 1 does not receive the internal resistance alerting signal, described battery manager 1 is judged the state of power brick according to the status data of the power brick that collects, just often carry out charging operations, described battery manager 1 sends charging signals to battery equalizer 2, send alerting signal by described battery manager 1 to car load when undesired, and stop the status detection of 1 pair of power brick of described battery manager;
The course of work of described battery equalizer 2 comprises following several steps:
1) when receiving the startup charging instruction of battery manager 1 transmission, start charging operations, otherwise battery equalizer 2 is in holding state;
2) when receive that battery manager 1 sends stop charging instruction the time, stop charging operations, otherwise battery equalizer 2 continues battery is charged.
The course of work of described internal resistance test device 3 comprises following several steps:
1) 3 pairs of power brick of internal resistance test device are monitored in real time, when having detected resistance and be in up-set condition, send the internal resistance alerting signal to battery manager 1, otherwise internal resistance test device 3 continues the state of monitoring power brick.
As seen from the above technical solutions, a kind of battery monitoring system that the utility model provides, because battery equalizer 2 has increased the expansion mouth, the wire harness that makes each instrument adopt is less relatively, reduced the complicacy of car load wire harness, can realize the expansion of systemic-function simultaneously by the expansion mouth of battery equalizer 2 easily, increase the extensibility of system.And connect by the CAN bus between battery manager 1, battery equalizer 2 and the internal resistance test device 3, and adopt unified CAN agreement to carry out communication, therefore system has stronger compatibility, and then can keep good rapport between each instrument or the equipment, thereby guaranteed the reliability of system.
More than lift preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle; any modification of being done, be equal to replacement, improvement etc.; all should be included within the protection domain of the present utility model; the interest field that the utility model is advocated should be as the criterion so that the utility model application scope is described, but not only limits to the foregoing description.
Claims (6)
1, a kind of battery monitoring system, comprise: battery manager and battery equalizer, described battery manager and battery equalizer include independently first, second control module, it is characterized in that, described battery manager and battery equalizer include first, second CAN communication module that is used for communicating each other respectively, be connected by the CAN bus between described battery manager and the battery equalizer, and use unified CAN agreement.
2, battery monitoring system according to claim 1 is characterized in that, described battery monitoring system also comprises internal resistance test device, and described internal resistance test device is connected with described battery equalizer.
3, battery monitoring system according to claim 1 and 2 is characterized in that, described battery equalizer includes a plurality of expansions mouths, and described battery manager and described internal resistance test device are forwarded to the mesuring battary bag by described expansion mouth respectively.
4, battery monitoring system according to claim 3 is characterized in that, described expansion mouth also is used to expand the leakage current detect equipment that is used to monitor the power brick state.
5, battery monitoring system according to claim 1, it is characterized in that described battery equalizer also includes second element circuit, described second element circuit comprises: the DC module, be connected the single battery gating module between power brick and the described DC module, wherein
Described DC module is used for the one or more battery charge of while to power brick under the control of described battery manager;
Described single battery gating module makes the battery that voltage is lower in the described power brick link to each other with described DC module under the control of described battery manager, realizes the charging of described DC module to described battery;
6, battery monitoring system according to claim 1 and 2, it is characterized in that described battery manager also includes the first module circuit, described first module circuit comprises: voltage sampling circuit, current sampling circuit, humidity sample circuit, temperature sampling circuit, and power circuit; Described internal resistance test device includes the 3rd control module, the 3rd CAN communication module, and the 3rd element circuit, and described the 3rd element circuit comprises: sinusoidal wave generation module, power factor are calculated module, and the signal amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202123580U CN201293829Y (en) | 2008-09-27 | 2008-09-27 | Battery monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202123580U CN201293829Y (en) | 2008-09-27 | 2008-09-27 | Battery monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN201293829Y true CN201293829Y (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202123580U Expired - Lifetime CN201293829Y (en) | 2008-09-27 | 2008-09-27 | Battery monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069762A (en) * | 2010-12-28 | 2011-05-25 | 奇瑞汽车股份有限公司 | Controller area network (CAN) system of electric/hybrid power automobile |
| CN102944848A (en) * | 2012-11-21 | 2013-02-27 | 广东省自动化研究所 | Real-time evaluation method for remaining capacity of power batteries and device thereof |
| CN105346405A (en) * | 2015-10-27 | 2016-02-24 | 北京新能源汽车股份有限公司 | Electric vehicle and battery pack monitoring system thereof |
| CN106291179A (en) * | 2016-07-29 | 2017-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Terminal discharge and recharge automatic test circuit and method of testing thereof |
-
2008
- 2008-09-27 CN CNU2008202123580U patent/CN201293829Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069762A (en) * | 2010-12-28 | 2011-05-25 | 奇瑞汽车股份有限公司 | Controller area network (CAN) system of electric/hybrid power automobile |
| CN102944848A (en) * | 2012-11-21 | 2013-02-27 | 广东省自动化研究所 | Real-time evaluation method for remaining capacity of power batteries and device thereof |
| CN105346405A (en) * | 2015-10-27 | 2016-02-24 | 北京新能源汽车股份有限公司 | Electric vehicle and battery pack monitoring system thereof |
| CN106291179A (en) * | 2016-07-29 | 2017-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Terminal discharge and recharge automatic test circuit and method of testing thereof |
| CN106291179B (en) * | 2016-07-29 | 2019-08-02 | 宇龙计算机通信科技(深圳)有限公司 | Terminal charge and discharge automatic test circuit and its test method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |