CN203551127U - BMS adopting thermocouple for temperature measurement - Google Patents
BMS adopting thermocouple for temperature measurement Download PDFInfo
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- CN203551127U CN203551127U CN201320764150.0U CN201320764150U CN203551127U CN 203551127 U CN203551127 U CN 203551127U CN 201320764150 U CN201320764150 U CN 201320764150U CN 203551127 U CN203551127 U CN 203551127U
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract 2
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 9
- 230000002708 enhancing effect Effects 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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Abstract
The utility model relates to a BMS (Battery Management System) adopting thermocouple for temperature measurement, comprising a thermocouple sensor, a filter circuit, a thermocouple temperature detection chip and a CPU (Central Processing Unit) master control circuit which are connected in order. The thermocouple temperature detection chip processes an analog temperature signal which is acquired by the thermocouple sensor and is filtered into a digital signal, and then uploads the digital signal to the CPU master control circuit, after that, the digital signal is output and displayed after being processed by the CPU master control circuit. When the BMS of the utility model is used for performing temperature data acquisition and display of a battery, the temperature measuring range can be expanded to the range from -270 DEG C to 1300 DEG C, thereby greatly expanding the range of the BMS for temperature measurement, and satisfying use requirements of the BMS in some special cases, enabling usable range and region of the BMS to be wider, and enhancing versatility of the BMS.
Description
Technical field
The utility model relates to a kind of battery management system that adopts thermocouple temperature measurement.
Background technology
Electric motor car will be take lithium battery as major impetus driving source future, and main cause is that lithium battery has high-energy-density advantage, so performance is comparatively stable.When yet lithium battery is produced in a large number, quality is difficult for grasping, when battery is dispatched from the factory there is difference slightly in electric weight, and along with operating environment, the factor such as aging, between battery, inconsistency will heal and become obvious, battery efficiency, life-span are also all by variation, add and overcharge or cross the situation such as put, when serious, may cause the safety problems such as catching fire.See through battery management system (BMS) and can accurately measure electric battery behaviour in service; protection battery is unlikely to excessively to discharge and recharge; the electric weight of each battery in balancing battery group; and the electric weight of analytical calculation electric battery be converted to the intelligible endurance information of driving, guarantee that electrokinetic cell can safe operation.
In current battery management system (BMS), temperature test is applied NTC or digital temperature sensor mostly, but it is-40 ℃～120 ℃ that NTC and digital temperature sensor are measured the scope of temperature, temperature-measuring range is narrow, and more the temperature value in large-temperature range cannot be measured.As at some in particular cases, temperature may be lower than-40 ℃, and now BMS cannot this temperature value of Measurement accuracy.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of can detection compared with the battery management system of large-temperature range.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of battery management system that adopts thermocouple temperature measurement, comprise the thermocouple sensor, filtering circuit, electric thermo-couple temperature detection chip and the master cpu that connect successively, it is characterized in that: described electric thermo-couple temperature detection chip is uploaded to master cpu after temperature analog signal is processed into digital signal, and master cpu is outputting ten system Temperature numerical after treatment.
The hot junction of described thermocouple sensor is arranged on the temperature test point of battery electrode column or battery surface.
Described filtering circuit comprises resistance R 1, R2, R3 and capacitor C 1, C2, C3, described resistance R 1 one end is connected with power supply, the other end is connected with described resistance R 2 with thermocouple cold junction is anodal respectively, ground connection after the described R2 other end is connected with described capacitor C 1, ground connection after this end is connected with described capacitor C 2, C3 simultaneously, one end that described capacitor C 2 is connected with C3 is connected in the rear ground connection respectively of resistance R 3 simultaneously and is connected with thermocouple cold junction negative pole.
The link of described capacitor C 1, the link of C2 and C2, C3 is connected with Ain1 end with the Ain0 end of described electric thermo-couple temperature detection chip respectively.
Compared with prior art, the utlity model has following advantage:
Utilize the utility model to carry out temperature data acquisition and the demonstration of battery, temperature measurement range can expand to-270 ℃～1300 ℃.The scope that has greatly increased BMS measurement temperature, has met BMS in some request for utilizations in particular cases, makes the usable range of BMS and region more extensive, has strengthened the versatility of BMS.
Accompanying drawing explanation
Fig. 1 is that the utility model structure forms schematic diagram;
Fig. 2 is the utility model embodiment circuit theory diagrams.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is explained in further detail.
embodiment 1
As shown in Figure 1, a kind of battery management system that adopts thermocouple temperature measurement, comprise the thermocouple sensor, filtering circuit, electric thermo-couple temperature detection chip and the master cpu that connect successively, described electric thermo-couple temperature detection chip is uploaded to master cpu after temperature analog signal is processed into digital signal, outputting ten system Temperature numerical after master cpu is processed.
The hot junction of described thermocouple sensor is arranged on the temperature test point of battery surface.
As shown in Figure 2, described filtering circuit comprises resistance R 1, R2, R3 and capacitor C 1, C2, C3, described resistance R 1 one end is connected with power supply, the other end is connected with described resistance R 2 with thermocouple cold junction is anodal respectively, ground connection after the described R2 other end is connected with described capacitor C 1, ground connection after this end is connected with described capacitor C 2, C3 simultaneously, one end that described capacitor C 2 is connected with C3 is connected in the rear ground connection respectively of resistance R 3 simultaneously and is connected with thermocouple cold junction negative pole.
The link of described capacitor C 1, the link of C2 and C2, C3 is connected with Ain1 end with the Ain0 end of described electric thermo-couple temperature detection chip respectively.
After BMS powers on, thermopair detection chip starts to carry out temperature detection order, and thermocouple sensor gathers the temperature data of battery, and temperature data is imported into the input end of filtering circuit by the cold junction from thermopair, after filtering, just temperature data is imported into electric thermo-couple temperature detection chip.The temperature data that imports electric thermo-couple temperature detection chip into is the form of simulating signal, after the processing of electric thermo-couple temperature detection chip, is output into the digital signal form that CPU can identify, and this digital signal is sent in CPU.CPU, after decoding is processed, is output as and can shows and identify decimal system Temperature numerical.
The present embodiment carries out temperature data acquisition and the demonstration of battery, and temperature measurement range can expand to-270 ℃～1300 ℃.The scope that has greatly increased BMS measurement temperature, has met BMS in some request for utilizations in particular cases, makes the usable range of BMS and region more extensive, has strengthened the versatility of BMS.
Claims (4)
1. a battery management system that adopts thermocouple temperature measurement, comprise the thermocouple sensor, filtering circuit, electric thermo-couple temperature detection chip and the CPU governor circuit that connect successively, it is characterized in that: described electric thermo-couple temperature detection chip is uploaded to CPU governor circuit, output display after CPU governor circuit is processed after analog temperature signal thermocouple sensor collection and that process through filtering is processed into digital signal.
2. the battery management system of employing thermocouple temperature measurement according to claim 1, is characterized in that: the hot junction of described thermocouple sensor is arranged on the temperature test point of battery electrode column or battery surface.
3. the battery management system of employing thermocouple temperature measurement according to claim 2, it is characterized in that: described filtering circuit comprises resistance R 1, R2, R3 and capacitor C 1, C2, C3, described resistance R 1 one end is connected with power supply, the other end is connected with described resistance R 2 with thermocouple cold junction is anodal respectively, ground connection after the described R2 other end is connected with described capacitor C 1, ground connection after this end is connected with described capacitor C 2, C3 simultaneously, one end that described capacitor C 2 is connected with C3 is connected in the rear ground connection respectively of resistance R 3 simultaneously and is connected with thermocouple cold junction negative pole.
4. the battery management system of employing thermocouple temperature measurement according to claim 3, is characterized in that: the link of described capacitor C 1, the link of C2 and C2, C3 is connected with Ain1 end with the Ain0 end of described electric thermo-couple temperature detection chip respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764150.0U CN203551127U (en) | 2013-11-28 | 2013-11-28 | BMS adopting thermocouple for temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764150.0U CN203551127U (en) | 2013-11-28 | 2013-11-28 | BMS adopting thermocouple for temperature measurement |
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| Publication Number | Publication Date |
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| CN203551127U true CN203551127U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320764150.0U Expired - Lifetime CN203551127U (en) | 2013-11-28 | 2013-11-28 | BMS adopting thermocouple for temperature measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071554A1 (en) * | 2017-10-13 | 2019-04-18 | 深圳传音通讯有限公司 | Temperature detection device for intelligent terminal and intelligent terminal provided with the device |
| CN112050961A (en) * | 2019-06-06 | 2020-12-08 | 佛山市汉隆自动化技术有限公司 | Multichannel thermocouple temperature measurement circuit of high channel isolation voltage |
| CN112784441A (en) * | 2021-03-01 | 2021-05-11 | 苏州联胜新能源科技有限公司 | Multi-path temperature sensing data multi-stage filtering processing method for lithium battery system |
-
2013
- 2013-11-28 CN CN201320764150.0U patent/CN203551127U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019071554A1 (en) * | 2017-10-13 | 2019-04-18 | 深圳传音通讯有限公司 | Temperature detection device for intelligent terminal and intelligent terminal provided with the device |
| CN112050961A (en) * | 2019-06-06 | 2020-12-08 | 佛山市汉隆自动化技术有限公司 | Multichannel thermocouple temperature measurement circuit of high channel isolation voltage |
| CN112784441A (en) * | 2021-03-01 | 2021-05-11 | 苏州联胜新能源科技有限公司 | Multi-path temperature sensing data multi-stage filtering processing method for lithium battery system |
| CN112784441B (en) * | 2021-03-01 | 2024-05-03 | 苏州联胜新能源科技有限公司 | Multi-path temperature sensing data multistage filtering processing method for lithium battery system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140416 |