CN203521558U - Low-temperature controlling device of hybrid vehicle battery system - Google Patents
Low-temperature controlling device of hybrid vehicle battery system Download PDFInfo
- Publication number
- CN203521558U CN203521558U CN201320644805.0U CN201320644805U CN203521558U CN 203521558 U CN203521558 U CN 203521558U CN 201320644805 U CN201320644805 U CN 201320644805U CN 203521558 U CN203521558 U CN 203521558U
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- battery
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- power
- battery management
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- 238000009826 distribution Methods 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000033228 biological regulation Effects 0.000 claims description 8
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 description 12
- 238000007599 discharging Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003411 electrode reaction Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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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 low-temperature controlling device of a hybrid vehicle battery system. The low-temperature controlling device comprises a power battery, a battery management system, a power supply distribution unit and a vehicle-mounted storage battery, and the low-temperature controlling device is structurally characterized in that a two-way DDC (direct digital control) convertor is connected between the power supply distribution unit and the storage battery; the vehicle-mounted storage battery is connected with a voltage collecting module, and a power battery bag is internally provided with a temperature sensor; the voltage collecting module and the temperature sensor are both electrically connected with the signal input end of the battery management system, and the control output end of the battery management system respectively sends a PDU (power distribution unit) on-off signal and a DCDC (Direct Current Dir Cur) reversing signal to the power-supply distribution unit and a dual-direction DCDC convertor. The low-temperature controlling device provided by the utility model has the advantages that the complicated external heating structure is replaced, the whole structure is simple, the control is convenient, and the high performance of the battery is guaranteed.
Description
Technical field
The utility model relates to motor vehicle driven by mixed power battery system, specifically a kind of motor vehicle driven by mixed power battery system low temperature regulation device.
Background technology
Electrokinetic cell is the most key parts of mixed power electric car, and the performance of battery, life-span etc. have determined cost and the performance of car load.Therefore take the performance of positive measure performance electrokinetic cell significant.In all environmental factors, temperature has the greatest impact to the charge-discharge performance of battery.If temperature is too low, the reactivity of battery also reduces, and in electrolyte, ion transfer rate slows down, and the charge and discharge electric current of battery will reduce, and power stage also can decline.Take lithium iron phosphate dynamic battery as example, at subzero 20 ℃, can only keep 60-65% energy, in the decay rapidly of subzero 40 ℃ of voltages.If the electrokinetic cell under low-temperature condition is carried out to powerful discharging and recharging, battery is damaged greatly.
The methods of external heat that adopt are come to the electrokinetic cell heating and thermal insulation under low temperature state more at present.Such as hot-air being incorporated in electrokinetic cell bag, adopting heating plate heating, adopting line with heating function to be wound around heating and adopt the coated heating of Electric radiant Heating Film etc.Wherein, by being incorporated into power brick after air heat, due to the restriction in flow velocity in power brick and space, and gaseous air to conduct heat on solid state battery efficiency lower, and flow velocity is uneven everywhere, is difficult to guarantee uniformly transfer heat; Adopting heating plate or line with heating function heating is also generally from battery bottom or top, battery cell to be heated, and the efficiency of heating surface is also relatively low.Be that mode by hot-air or heating plate, heater wire all needs to increase complicated structure and realizes, taken too much interior space and increased extra cost.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of motor vehicle driven by mixed power battery system low temperature regulation device, and this device is the external heat of alternate power battery completely, and overall structure is simple, and it is convenient to control, and is conducive to the high-effect use of battery.
For solving the problems of the technologies described above, motor vehicle driven by mixed power battery system low temperature regulation device of the present utility model comprises electrokinetic cell, battery management system, power distribution unit and Vehicular accumulator cell, its design feature is to be connected with bidirectional DC/DC converter between described power distribution unit and storage battery, on described Vehicular accumulator cell, be connected with voltage acquisition module, in electrokinetic cell bag, be provided with temperature sensor, above-mentioned voltage acquisition module and temperature sensor are all connected electrically on the signal input part of battery management system, the control output end of battery management system sends PDU make-and-break signal and DCDC commutation signal to power distribution unit and bidirectional DC/DC converter respectively.
Adopt said structure, utilize bidirectional DC/DC converter that electrokinetic cell and Vehicular accumulator cell are formed to charging and discharging circuit, battery management system is according to the voltage of the temperature of electrokinetic cell and Vehicular accumulator cell, judge and control the break-make of charging and discharging circuit, because battery all produces heat at charge and discharge process, the heat that utilizes charge and discharge process to produce heats electrokinetic cell or storage battery self, fundamentally guaranteed that battery self temperature is all the time in its zone of reasonableness, simultaneously, under low temperature environment, both guaranteed the high-effect of battery, protect again battery not to be damaged under the large current conditions of low temperature.
The supply line of the inherent storage battery of described power distribution unit is provided with storage battery contactor, and described storage battery contactor is electrically connected to the control output end of battery management system.
The mains supply line of described electrokinetic cell is provided with main contactor, and described main contactor is electrically connected to battery management system.
In sum, the utility model has substituted complicated external heat structure and overall structure is simple, it is convenient to control, and has guaranteed the high-effect of battery.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is theory structure schematic diagram of the present utility model.
Embodiment
With reference to accompanying drawing, motor vehicle driven by mixed power battery system low temperature regulation device of the present utility model comprises electrokinetic cell 1, battery management system 2, power distribution unit 3 and Vehicular accumulator cell 4, between power distribution unit 3 and storage battery 4, be connected with bidirectional DC/DC converter 5, by bidirectional DC/DC converter, electrokinetic cell and Vehicular accumulator cell formed to charging and discharging circuit.On Vehicular accumulator cell 4, be connected with voltage acquisition module 6, in electrokinetic cell 1 bag, be provided with temperature sensor 7.Electrokinetic cell 1 generally can be placed in power brick, so temperature sensor 7 is located in power brick, for detecting in real time the temperature in power brick.Above-mentioned voltage acquisition module 6 and temperature sensor 7 are all connected electrically on the signal input part of battery management system 2, and the control output end of battery management system 2 sends PDU make-and-break signal and DCDC commutation signal to power distribution unit 3 and bidirectional DC/DC converter 5 respectively.
With reference to accompanying drawing, the inherent Vehicular accumulator cell of power distribution unit 34 supply lines are provided with storage battery contactor 8, storage battery contactor 8 is electrically connected to the control output end of battery management system 2, and the PDU make-and-break signal of being sent by battery management system is controlled the break-make of storage battery contactor 8.Between electrokinetic cell 1 and power distribution unit 3, by mains supply line, be connected, the mains supply line of electrokinetic cell 1 is provided with main contactor 9, and main contactor 9 comprises main positive contactor and main negative contactor, and main contactor 9 is electrically connected to battery management system 2.Battery management system 2 can cut off the power supply of whole electrokinetic cell 1 by cutting off main contactor 9.
The hot Mathematical Modeling of principle of the present utility model based on battery all related to the hot production rate of inside battery unit volume in the hot Mathematical Modeling of battery.Take lithium ion battery as example, and its inner heat producing is mainly comprised of three parts: reaction heat Q
r, hot Q polarizes
p, Joule heat Q
j.Q
rthe heat that represents the chemical reaction of inside battery and produce, this part heat is negative value when charging, when electric discharge, be on the occasion of.Hot Q polarizes
prefer to that battery is in charge and discharge process, due to the polarization of battery, the average voltage of battery can with open circuit voltage deviation to some extent, and cause the heat that produces, this part heat when discharging and recharging, be all on the occasion of.Q
jrepresent Joule heat, this part heat produces because inside battery exists resistance, in the process discharging and recharging this part heat be all on the occasion of.
Reaction heat
In formula: Q is chemical reaction process both positive and negative polarity quantity of heat production algebraical sum, and I is discharging current.
Polarization heat
R
pdfor polarization resistance.
Joule heat
Battery gross calorific power
Due to reaction heat Q
rin charging, time be negative value, when electric discharge, be on the occasion of, so the hot production rate of battery in discharge process be greater than the hot production rate in charging process, thus battery temperature temperature of battery when charging is high during guiding discharge.The positive electrode reaction table of battery reveals larger exothermic effect, and negative electrode reaction table reveals less endothermic effect simultaneously, so comprehensive positive and negative single electrode reaction thermal effect presents exothermic effect in the overall reaction of battery in charge and discharge process.
Based on above-mentioned analysis, the utility model makes full use of the heat of the charge and discharge process generation of battery, and battery pack is carried out, from heating, replacing external heat, fundamentally guarantees the temperature of battery cell.By electrokinetic cell 1 and 4 of 24V/12V Vehicular accumulator cells, carry out real-time discharging and recharging, battery utilization discharges and recharges the lifting that produced heat is realized the temperature of self, guarantees that under low temperature environment, battery self temperature maintains in the preferred range.
In control program of the present utility model, might as well establish electrokinetic cell 1 and be charged as forward conduction to Vehicular accumulator cell 4, Vehicular accumulator cell 4 is charged as reverse-conducting to electrokinetic cell 1.Battery management system 2 gathers and the temperature signal T of Real-Time Monitoring electrokinetic cell 1 and the voltage signal U of Vehicular accumulator cell 4, and according to gathering and monitor data is controlled break-make and the direction of charging circuit:
(1) when temperature of powered cell signal being detected lower than heating threshold value t
0and battery tension signal is also lower than charge in batteries setting threshold u
0time, BMS sends command signal, and electrokinetic cell master just, master bears contactor and the interior contactor of PDU is closed, and bidirectional DC/DC converter internally-powered battery is to storage battery one-way conduction, charging circuit forward conduction, electrokinetic cell and storage battery are realized the heating of self by the heat producing in charge and discharge process.
A. temperature of powered cell is elevated to and sets limit value t
maxtime, BMS sends instruction, and main contactor and bidirectional DC/DC converter disconnect, and charging stops, and inside battery stops heating immediately.
B. battery tension is recharged and reaches charging setting maximum u
max, and temperature of powered cell is not elevated to setting restriction t
max, charging circuit reverse-conducting, continues as electrokinetic cell heating, until battery temperature reaches set point t
max.
(2) when temperature of powered cell signal being detected lower than setting threshold t
0, and battery tension is higher than threshold value u
maxtime, BMS control circuit reverse-conducting.
A. temperature of powered cell is elevated to and sets limit value t
maxtime, BMS sends instruction, and contactor and bidirectional DC/DC converter disconnect, and charging stops, and inside battery stops heating immediately.
B. battery tension electric discharge reaches and sets minimum value u
min, and temperature of powered cell is not elevated to setting restriction t
max, charging circuit forward conduction, electrokinetic cell discharges to conducting self-heating, until temperature of powered cell reaches set point t
max.
(3) when temperature of powered cell is lower than setting threshold t
0, battery discharging reaches sets minimum value u
min, electrokinetic cell voltage is also lower than its discharge threshold, and BMS can limit or forbid electrokinetic cell power stage, must be to using after power battery charging, external charging can promote battery self temperature equally.In such cases, electrokinetic cell utilizes the complete battery pair conducting self-heating of external charging.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection range of the present utility model should be as the criterion with claim of the present utility model.
Claims (3)
1. a motor vehicle driven by mixed power battery system low temperature regulation device, comprise electrokinetic cell (1), battery management system (2), power distribution unit (3) and Vehicular accumulator cell (4), it is characterized in that being connected with bidirectional DC/DC converter (5) between described power distribution unit (3) and storage battery (4), on described Vehicular accumulator cell (4), be connected with voltage acquisition module (6), in electrokinetic cell (1) bag, be provided with temperature sensor (7), above-mentioned voltage acquisition module (6) and temperature sensor (7) are all connected electrically on the signal input part of battery management system (2), the control output end of battery management system (2) sends PDU make-and-break signal and DCDC commutation signal to power distribution unit (3) and bidirectional DC/DC converter (5) respectively.
2. motor vehicle driven by mixed power battery system low temperature regulation device as claimed in claim 1, it is characterized in that the inherent Vehicular accumulator cell of described power distribution unit (3) (4) supply line is provided with storage battery contactor (8), described storage battery contactor (8) is electrically connected to the control output end of battery management system (2).
3. motor vehicle driven by mixed power battery system low temperature regulation device as claimed in claim 1, is characterized in that the mains supply line of described electrokinetic cell (1) is provided with main contactor (9), and described main contactor (9) is electrically connected to battery management system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644805.0U CN203521558U (en) | 2013-10-19 | 2013-10-19 | Low-temperature controlling device of hybrid vehicle battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644805.0U CN203521558U (en) | 2013-10-19 | 2013-10-19 | Low-temperature controlling device of hybrid vehicle battery system |
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| Publication Number | Publication Date |
|---|---|
| CN203521558U true CN203521558U (en) | 2014-04-02 |
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ID=50380439
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320644805.0U Expired - Lifetime CN203521558U (en) | 2013-10-19 | 2013-10-19 | Low-temperature controlling device of hybrid vehicle battery system |
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|---|---|
| CN (1) | CN203521558U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476644A (en) * | 2016-10-28 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | A kind of heating control system of low pressure hybrid-power battery and method |
| CN106816944A (en) * | 2015-11-30 | 2017-06-09 | 中国科学院沈阳自动化研究所 | A kind of ocean robot electronic equipment uninterruptible power system and fault handling method |
| CN108110383A (en) * | 2018-01-15 | 2018-06-01 | 深圳市飞碟动力科技有限公司 | Low temperature battery group |
| CN111244579A (en) * | 2018-11-28 | 2020-06-05 | 浙江吉智新能源汽车科技有限公司 | Battery thermal management system and electric vehicle |
| CN112550064A (en) * | 2020-11-12 | 2021-03-26 | 华为技术有限公司 | DC/DC converter, heating method of power battery pack and electric vehicle |
| CN113054288A (en) * | 2019-12-26 | 2021-06-29 | 观致汽车有限公司 | Vehicle and battery heating method and system thereof |
| WO2023029668A1 (en) * | 2021-08-28 | 2023-03-09 | 比亚迪股份有限公司 | Low-voltage power supply system and vehicle having same |
-
2013
- 2013-10-19 CN CN201320644805.0U patent/CN203521558U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816944A (en) * | 2015-11-30 | 2017-06-09 | 中国科学院沈阳自动化研究所 | A kind of ocean robot electronic equipment uninterruptible power system and fault handling method |
| CN106816944B (en) * | 2015-11-30 | 2019-09-06 | 中国科学院沈阳自动化研究所 | A kind of ocean robot electronic equipment uninterruptible power system and fault handling method |
| CN106476644A (en) * | 2016-10-28 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | A kind of heating control system of low pressure hybrid-power battery and method |
| CN106476644B (en) * | 2016-10-28 | 2020-05-29 | 安徽江淮汽车集团股份有限公司 | Heating control system and method for low-voltage hybrid power battery |
| CN108110383A (en) * | 2018-01-15 | 2018-06-01 | 深圳市飞碟动力科技有限公司 | Low temperature battery group |
| CN111244579A (en) * | 2018-11-28 | 2020-06-05 | 浙江吉智新能源汽车科技有限公司 | Battery thermal management system and electric vehicle |
| CN113054288A (en) * | 2019-12-26 | 2021-06-29 | 观致汽车有限公司 | Vehicle and battery heating method and system thereof |
| CN112550064A (en) * | 2020-11-12 | 2021-03-26 | 华为技术有限公司 | DC/DC converter, heating method of power battery pack and electric vehicle |
| WO2023029668A1 (en) * | 2021-08-28 | 2023-03-09 | 比亚迪股份有限公司 | Low-voltage power supply system and vehicle having same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |