CN202351407U - Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof - Google Patents
Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof Download PDFInfo
- Publication number
- CN202351407U CN202351407U CN2011204848774U CN201120484877U CN202351407U CN 202351407 U CN202351407 U CN 202351407U CN 2011204848774 U CN2011204848774 U CN 2011204848774U CN 201120484877 U CN201120484877 U CN 201120484877U CN 202351407 U CN202351407 U CN 202351407U
- Authority
- CN
- China
- Prior art keywords
- bms
- lithium battery
- resistor
- relay
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a lithium battery pack and a battery management system (BMS) micro-resistor measurement instrument thereof, which comprise an alternating-current constant-current power supply, a signal measuring circuit and a signal processing circuit which are sequentially connected; the alternating-current constant-current power supply is used for providing stable alternating current of 20mA/1KHz; the signal measuring circuit comprises a relay, wherein the alternating-current constant-current power supply is connected to an external resistor to be measured or an internal resistor by the switching of the relay; the signal processing circuit comprises a voltage sampling module, an amplifying, shaping and filtering module and an analog-digital (AD) converting module which are sequentially connected; and the voltage sampling module is connected to the external resistor to be measured or the internal resistor by the switching of the relay. According to the lithium battery pack and the BMS micro-resistor measurement instrument thereof, an object to be measured and a main body circuit of a testing instrument can be effectively isolated, and the aim that a plurality of tests can be automatically finished in one step by a single testing instrument is realized.
Description
[technical field]
The utility model relates to fields such as a kind of lithium battery group test, particularly relates to the special-purpose microresistivity survey appearance of a kind of lithium battery group and BMS thereof.
[background technology]
In the comprehensive tester of lithium battery; Will be under the condition that does not influence the measurand operate as normal, measure the equivalent internal resistance of lithium battery group automatically and the conducting resistance of the charge and discharge MOSFET of BMS ((BATTERY MANAGEMENTSYSTEM) battery management system), current sampling resistor etc. are comprehensively measured.At present, lithium battery production is produced house and is all used general microresistivity survey appearance, can only accomplish spot measurement; Can't adapt to the automatic function of measuring of multiple spot simultaneously; Must adopt a plurality of operations one by one project measure respectively, relatively waste time and energy, and data statistics also can't be accomplished automatically.
[summary of the invention]
The technical matters that the utility model will solve is to provide a kind of lithium battery group and BMS microresistivity survey appearance thereof, and it can make measurand and tester main body circuit effectively isolate, and realizes that single tester just can a plurality of tests of disposable automatic completion.
The utility model is achieved in that a kind of lithium battery group and BMS microresistivity survey appearance thereof, and it comprises interchange constant-current supply, circuitry for signal measurement, the signal processing circuit that connects successively; Said interchange constant-current supply is used to provide the stable alternating current of a 20mA/1KHz; Said circuitry for signal measurement comprises relay, and said interchange constant-current supply is connected to outside measured resistance or internal resistance through the relay switching; Said signal processing circuit comprises voltage sampling module, amplification shaping filter module, the AD modular converter that connects successively; Said voltage sampling module is connected to outside measured resistance or internal resistance through the relay switching.
The advantage of the utility model is: the utility model is measured the internal resistance of this measuring instrument earlier; Measure outside measured resistance again; The measured value of measured value through outside measured resistance and known internal resistance can calculate the actual value of measured resistance, can assert in the short period of time; Electric current; Each parameter of temperature and circuit is consistent relatively, then measures the precision of outside measured resistance and the precision and the temperature stability of the approaching employed internal resistance of temperature stability, has realized that the full-automation of lithium battery group and BMS thereof detects.
[description of drawings]
Combine embodiment that the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the electrical block diagram of the utility model.
[embodiment]
See also shown in Figure 1ly, the embodiment of the utility model is carried out detailed explanation.
Like Fig. 1, a kind of lithium battery group of the utility model and BMS microresistivity survey appearance thereof have comprised interchange constant-current supply, circuitry for signal measurement, signal processing circuit.
Said interchange constant-current supply is used to provide the stable alternating current of a 20mA/1KHz.
Said circuitry for signal measurement comprises relay, and said interchange constant-current supply is connected to outside measured resistance or internal resistance through the relay switching.
Said signal processing circuit comprises voltage sampling module, amplification shaping filter module, the AD modular converter that connects successively.
The utility model is when actual measurement, and the stable alternating current of said 20mA/1KHz switches (K1, K2 are closed) downwards through relay, is added on the internal resistance of this measuring instrument; Said voltage sampling module is got the voltage signal on the internal resistance; Through amplifying the coupling of shaping filter module, front end amplifies with voltage signal, and lock amplifies mutually; After the Filtering Processing, send to the AD modular converter and carry out AD conversion back output; Then, the stable alternating current of more said 20mA/1KHz is switched (K1, K2 are upwards closed) through relay, add externally on the measured resistance; Said voltage sampling module is got the voltage signal on the outside measured resistance; Through amplifying the coupling of shaping filter module, front end amplifies with this voltage signal, and lock amplifies mutually; After the Filtering Processing, send to the AD modular converter and carry out AD conversion back output.
The utility model is measured the internal resistance of this measuring instrument earlier before measuring each time, measure outside measured resistance again; The measured value of measured value through outside measured resistance and known internal resistance; The actual value of measured resistance can be calculated, electric current can be assert in the short period of time; Each parameter of temperature and circuit is consistent relatively, then measures the precision of outside measured resistance and the precision and the temperature stability of the approaching employed internal resistance of temperature stability.The utility model can make measurand and tester main body circuit effectively isolate, and realizes that single tester just can a plurality of tests of disposable automatic completion.
The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (1)
1. lithium battery group and BMS microresistivity survey appearance thereof, it is characterized in that: it comprises interchange constant-current supply, circuitry for signal measurement, the signal processing circuit that connects successively; Said interchange constant-current supply is used to provide the stable alternating current of a 20mA/1KHz; Said circuitry for signal measurement comprises relay, and said interchange constant-current supply is connected to outside measured resistance or internal resistance through the relay switching; Said signal processing circuit comprises voltage sampling module, amplification shaping filter module, the AD modular converter that connects successively; Said voltage sampling module is connected to outside measured resistance or internal resistance through the relay switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204848774U CN202351407U (en) | 2011-11-29 | 2011-11-29 | Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204848774U CN202351407U (en) | 2011-11-29 | 2011-11-29 | Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351407U true CN202351407U (en) | 2012-07-25 |
Family
ID=46540403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204848774U Expired - Lifetime CN202351407U (en) | 2011-11-29 | 2011-11-29 | Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407217A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
-
2011
- 2011-11-29 CN CN2011204848774U patent/CN202351407U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407217A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
| CN104407217B (en) * | 2014-11-05 | 2017-02-15 | 贝兹维仪器(苏州)有限公司 | USB adapter applied to resistivity measuring instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103713181B (en) | Weak current signal supervisory instrument | |
| CN203705621U (en) | Metering circuit of residual capacity of battery pack | |
| CN106019160B (en) | A kind of battery management system and detection method of the electric car with AC internal Resistance inspection | |
| CN201607477U (en) | 800kV ultra-high voltage direct-current non-contact multichannel range-finding type electroscope | |
| CN103018671A (en) | Intelligent storage battery monitoring and maintaining device | |
| CN209373075U (en) | A kind of battery measuring device | |
| CN102393497A (en) | Portable polarity calibrator for electronic mutual inductor | |
| CN202351407U (en) | Lithium battery pack and battery management system (BMS) micro-resistor measurement instrument thereof | |
| CN202649455U (en) | Embedded accuracy tester for current transformer | |
| CN102928641A (en) | Electronic current transformer | |
| CN103487630A (en) | High-end sampling battery voltage circuit | |
| CN106443156B (en) | Electric automobile current measurement circuit | |
| CN103353566B (en) | Battery for mimic channel equipment testing circuit in place | |
| CN202916360U (en) | Switching value tester | |
| CN202256655U (en) | Portable-type electronic transformer polarity check gauge | |
| CN204789952U (en) | Special UPS power output power characteristic's of electric power testing arrangement | |
| CN204649831U (en) | The accurate sample-taking calculating circuit of lithium battery BMS system charging and discharging currents | |
| CN205317876U (en) | Device is checked to cable core | |
| CN202916326U (en) | Electronic current transformer | |
| CN202330668U (en) | Multiplexing battery pack voltage measurement device | |
| CN203216967U (en) | Pliers-shaped anti-interference current transformer and transformer iron core grounding current testing system | |
| CN209086327U (en) | Digitalized electric energy on-Line Monitor Device | |
| CN205279897U (en) | A alternating current -direct current unit test device of gathering and editing for rocket measurement system | |
| CN205484497U (en) | Novel intelligence join in marriage net electric power signal transducer | |
| CN201569732U (en) | Power supply supervisory circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN NEBULA ELECTRONIC CO., LTD. Free format text: FORMER NAME: FUZHOU DEVELOPMENT ZONE XINGYUN ELECTRONIC AUTOMATION CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 350000 Productivity Promotion Center, 8 star road, Mawei District, Fujian, Fuzhou 3, China, 304 Patentee after: FUJIAN NEBULA ELECTRONICS CO., LTD. Address before: 350000 Productivity Promotion Center, 8 star road, Mawei District, Fujian, Fuzhou 3, China, 304 Patentee before: Fuzhou Development Zone Xingyun Electronic Automation Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Mawei District 350000 Fujian city of Fuzhou province Kuaian Majiang Shishi Avenue Road No. 6 1-4 floor Patentee after: FUJIAN NEBULA ELECTRONICS CO., LTD. Address before: 350000 Productivity Promotion Center, 8 star road, Mawei District, Fujian, Fuzhou 3, China, 304 Patentee before: FUJIAN NEBULA ELECTRONICS CO., LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
|
| CX01 | Expiry of patent term |