CN109873096A - A kind of vehicle mounted dynamic battery group of temperature adjustable - Google Patents
A kind of vehicle mounted dynamic battery group of temperature adjustable Download PDFInfo
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- CN109873096A CN109873096A CN201711247613.5A CN201711247613A CN109873096A CN 109873096 A CN109873096 A CN 109873096A CN 201711247613 A CN201711247613 A CN 201711247613A CN 109873096 A CN109873096 A CN 109873096A
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- vehicle mounted
- battery group
- mounted dynamic
- dynamic battery
- temperature
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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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Abstract
A kind of vehicle mounted dynamic battery group of temperature adjustable arranges thermoelectric components on the vehicle mounted dynamic battery group outer wall, is provided with low-melting alloy layer between the two.Vehicle mounted dynamic battery winter cruising ability provided by the invention is improved, and reduces summer and fires risk, improves charging rate.
Description
Technical field
The present invention relates to the vehicle-mounted power batteries of electric car, and in particular to a kind of vehicle mounted dynamic battery of temperature adjustable
Group.
Background technique
With the raising of environmental protection standard, wideling popularize the clean electric car of green becomes social alternative technology side
Case.However, to there are greatest differences between the course continuation mileage and charging time and consumer demand of batteries of electric automobile.Therefore,
Battery thermal management is one of the key technical problem for needing to solve in electric car actual application.Battery thermal management system
Major function includes: the accurate measurement and monitoring of battery temperature；Effective heat dissipation and ventilation when battery temperature is excessively high；Cryogenic conditions
Under quick heating；Pernicious gas generate when available ventilation and to the equally distributed holding in battery temperature field.
Battery thermal management can be divided into two kinds of situations of cooling and heating.Cooling, mainly preventing temperature is more than the normal work of battery
The maximum permissible value of work, specific requirement control the temperature rise of battery pack, and the temperature of each point, keeps each single battery in balancing battery case
Temperature it is consistent, prevent from causing battery performance difference between battery pack because of temperature difference.Current cooling method is mainly had time
Air cooling, liquid cooling and Phase cooling.Wherein, air cooling cost is minimum but cooling effect is bad；The cooling effect of Phase cooling
Fruit is good but cost is excessively high；Liquid cooling cost is moderate but needs the memory space of cooling medium and extracorporal circulatory system space.Heating,
The activity of battery, improves the insertion ability of cathode of lithium battery graphite, to avoid low when mainly improving environment temperature lower charging
Large current charge under warm operating condition and the battery thermal runaway being likely to occur.
When the circuit that direct current is made up of two kinds of different conductive materials, a joint discharges heat, another connects
Heat is absorbed at head.The process is thermodynamically reversible, and when changing the direction of direct current, release end of heat and heat absorbing end change therewith
Become.This phenomenon is known as the peltier effect of thermoelectric material, also referred to as the second effect of thermoelectricity.Thermoelectric material with the effect can
To realize the orientation heat transfer from low temperature side to high temperature side.This process is the conversion of all solid state energy, without chemical reaction, without stream
Body medium, it is noiseless, without abrasion, without medium leakage, small in size, light-weight, conveniently moving, long service life, later maintenance at
This is almost nil.
Existing battery is in charging, if environment temperature is lower, lithium ion battery, positive lithium abjection is fast, and cathode lithium is inside
The insertion speed in portion is slow, will cause lithium metal in the accumulation of electrode surface, generates dendrite, lead to battery short circuit；Nickel-metal hydride battery by
Slow in infiltration rate of the metal-hydride negative to hydrogen, hydrogen has little time to be absorbed by hydrogen-storage alloy, forms hydrogen, increases inner pressure of battery, influences
Security performance.For low temperature charging problems, the prior art is early period using low current charge, and charging process transfer efficiency is less than
100%, so that part electricity conversion is at heat, so that batteries of electric automobile group temperature gradually rises, charge acceptance
Rise, is finally reached and charges normal speed.But this method charging current early period is smaller, the heat for causing electric current to generate is smaller,
It is longer that battery from low temperature reaches the normal temperature time, finally extends the charging time.On the other hand, charging time length means list
A charging pile working efficiency is low, and electrically-charging equipment is continuously increased to meet charge requirement, objectively increases power grid construction, fortune
Battalion and maintenance cost.
Existing battery is when discharging work, if environment temperature is higher, not only influences actual use performance and the longevity of battery
Life, also directly affects the security reliability of battery.The excessively high exothermic reaction that can cause between electrode material and electrolyte of temperature, makes heat
The simultaneously fast propagation out of control that is further exacerbated by will lead to entire battery pack and produce gas even explosion issues.If environment temperature is lower,
It will lead to the cruising ability decline of vehicle mounted dynamic battery.
Therefore, above-mentioned to overcome the problems, such as, it is desirable to provide a kind of vehicle mounted dynamic battery group of temperature adjustable,
Summary of the invention
For this purpose, the quasi- peltier effect using thermoelectric material of the present invention realizes the temperature of vehicle mounted dynamic battery to a certain extent
Degree control, to reach the efficient purpose of energy-saving safety.
In order to achieve the above object, The technical solution adopted by the invention is as follows:
Thermoelectric components are arranged on the vehicle mounted dynamic battery group outer wall in a kind of vehicle mounted dynamic battery group of temperature adjustable,
It is provided with low-melting alloy layer therebetween.
Preferably, the thermoelectric components are made of thermoelectric element；P-type and N of the thermoelectric element suitable for middle low-temperature space
Type Bi2Te3Class thermoelectric material is made.
Preferably, be respectively provided on the battery pack positive and negative electrode conventional charge/discharge operation lead-out wire and for
The lead-out wire of thermoelectric components power supply.
Preferably, change-over switch is set in the circuit of lead-out wire Yu the thermoelectric components composition of the power supply.
Preferably, the p-type Bi2Te3Class thermoelectric material includes the material being shown below: (Bi1-xSbx)2Te3, 0.7≤x
≤0.75。
Preferably, the p-type Bi2Te3Class thermoelectric material is prepared as follows:
(1) Bi, Sb and Te will be fitted into sintering quartz ampoule after vacuum sealing tube in the chemical formula ratio, and will be packed into 700
The rocking furnace that resistance heating, 100 °~130 ° amplitudes at~850 DEG C are waved is sintered 36~48h；
(2) 600 DEG C are cooled to the rate of 3 DEG C/h, heat preservation is reduced the temperature to again with the rate of 1.5 DEG C/h after 1~2 hour
585℃；
(3) 550 DEG C are cooled to the rate of 3 DEG C/h after keeping the temperature 1~1.5 hour；
(4) room temperature is naturally cooled to after annealing 48 hours, i.e. acquisition p-type Bi2Te3Class thermoelectric material.
Preferably, the N-type Bi2Te3Class thermoelectric material is the island structure tissue that wherein at least a kind of element is segregated,
Its sea portion is 5 μm or less by the average grain diameter of C axis facing one direction and crystal grain is constituted；Island portion is 20~50 μm by average length
Elongate grains constitute；The island portion random distribution is in extra large portion.
Compared with the latest prior art, technical solution provided by the invention has following excellent effect:
In technical solution provided by the invention, thermoelectric components are provided with using the outer wall in battery pack, are set therebetween
It is equipped with low-melting alloy layer, so that the winter cruising ability of on-vehicle battery group improves 5~10%, reducing summer fires wind
Danger, improves charging rate 5~10%；
The Bi of the present invention2Te3Class thermoelectric material thermoelectricity capability is prominent, and compactness is high.
Detailed description of the invention:
The structural schematic diagram of Fig. 1 vehicle mounted dynamic battery group of the present invention；
Fig. 2 wiring schematic diagram of the present invention；
The installation diagram of Fig. 3 vehicle mounted dynamic battery group of the present invention；
Wherein: 1: battery cell；2: low-melting alloy；3: thermoelectric components；4:P type thermoelectric material；5:N type thermoelectric material；
6: substrate；7: battery pack outer wall；8: positive electrode；9: negative electrode；10: positive sending and receiving motivation line；11: anode connects thermoelectric components line；
12: switching switch；13: cathode sending and receiving motivation line；14: cathode connects thermoelectric components line；15: interconnection；16: baffle；17: panel；
18: through-hole；19: shrinkage pool；20: baffle edge.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
1, thermoelectric material:
A, p-type Bi2Te3Class thermoelectric material
(1) optional simple substance raw material is pressed into (Bi0.28Sb0.72)2Te3Weighing；It is fitted into the more flat quartz ampoule of bottom frit and carries out
Tube sealing is vacuumized, the rocking furnace of resistance heating is then charged into, quartz ampoule is placed vertically, it is small to be heated up to 780 DEG C of sintering reactions 40
When, quartz ampoule sporadically is waved by 120 ° of amplitude during the reaction, guarantees to react abundant and solution uniform component distribution, instead
It should terminate quartz ampoule being placed into vertical position；
(2) then with the rate slow cooling of 3 DEG C/h to 600 DEG C, cooled down again with the rate of 1.5 DEG C/h after heat preservation 1 hour
To 585 DEG C；
(3) 550 DEG C are cooled to 3 DEG C/h again after keeping the temperature 1.5 hours；
(4) then naturally cooling to room temperature after the annealing temperature 48 hours obtains p-type Bi2Te3Class thermoelectric material.
B, N-type Bi2Te3The structure of class thermoelectric material:
Its institutional framework is island structure, and extra large portion is 5 μm or less and the crystal grain structure of C axis facing one direction by average grain diameter
At island portion is made of elongated crystal grain, and the average length of length direction is 20~50 μm, and the island portion is randomly distributed in sea
In portion, and the structure that at least one kind of element of the island portion material constitution element is segregated；
2, vehicle mounted dynamic battery group
A, the structure of vehicle mounted dynamic battery group:
The vehicle mounted dynamic battery group is made of single battery 1, and single battery 1 is regularly arranged to be placed in the opposite baffle in position
Between 16 and the opposite panel 17 in position；The both sides of the edge of baffle 16 have baffle wedge stretch out perpendicular to baffle 16, opposite
Side 20 is provided with through-hole 18 on the baffle edge 20, and 17 outer surface of panel is provided with shrinkage pool 19 corresponding with the through-hole 18, and
Panel 17 has panel edge stretch out perpendicular to panel 17, opposite perpendicular to the both sides of the edge of baffle 16 at it, opposite
Panel 17 is connected and fixed with baffle 16 by being inserted with bolt in the through-hole 18 and shrinkage pool 19, multiple single batteries 1 and panel
17 contact jaw is stuck between the panel edge of panel 17.
B, the assembly of vehicle mounted dynamic battery group:
As shown in figure 3, firstly, lower panel is placed on the edge of forward and backward baffle lower edge, and below plate with it is forward and backward
Gasket is installed in the junction of baffle, while insertion in corresponding shrinkage pool on the edge through-hole and lower panel at edge under the baffle
Bolt；
Secondly, arranging single battery on the inner surface of plate below, partition is set between each single battery, and is made every
The lower end of a single battery is stuck between the left and right positive stop lug boss of lower panel；
Again, top panel is installed to battery pack upper surface, so that top panel is inserted in the edge of forward and backward baffle top edge
Lower section, and gasket is installed in the junction of top panel and forward and backward baffle, while be stuck in the upper end of single battery above
Between the left and right positive stop lug boss of plate, and bolt is inserted into corresponding shrinkage pool on the edge through-hole and top panel of baffle top edge；
Finally, left and right side plate to be installed to the left and right side of battery pack, and corresponding in side plate and baffle, panel
Gasket is installed in junction, and the screw hole inserted screws on side plate is fastened.
3, the vehicle mounted dynamic battery group of a kind of temperature adjustable:
1) as shown in Figure 1, by numerous p-types and N-type Bi2Te3Class thermoelectric material is fabricated to thermoelectric element to series-parallel, and will
These thermoelectric elements are fabricated to thermoelectric components in series and parallel respectively；
2) low-melting alloy is placed in the inner surface of above-mentioned electrothermal module and is heated to its fusing point, form liquid alloy, to
It is attached to battery pack outer wall surface after coating uniformly, is just formed between thermoelectric components and battery pack outer wall after cooling stable and hard
Solid low-melting alloy thin layer；
3) as shown in Fig. 2, drawing both threads respectively on battery pack positive and negative electrode, one pair of them lead accesses engine and uses
In conventional charge/discharge operation, and the access switching of another pair lead switchs；
4) both threads are drawn after switching switch, is respectively connected to thermoelectric components, and power to it, realize refrigeration or heat preservation
Function.Such as summer temperature it is higher when, give thermoelectric components connect forward current, open refrigeration cool-down mode with meet battery pack dissipate
Heat demand,；When winter temperature is lower, heat supply holding mode is opened to thermoelectric components turn-on reversal electric current to meet battery pack heat preservation
Demand.
One of the above description is merely a specific embodiment, but the scope of protection of the present invention is not limited thereto, appoints
The variation or replacement what those familiar with the art can readily occur within the technical scope of the present disclosure, all
It is covered by the protection scope of the present invention.
Claims (7)
1. a kind of vehicle mounted dynamic battery group of temperature adjustable, which is characterized in that be arranged on the vehicle mounted dynamic battery group outer wall
Low-melting alloy layer is arranged in thermoelectric components therebetween.
2. vehicle mounted dynamic battery group according to claim 1, which is characterized in that the thermoelectric components are by thermoelectric element group
At；The thermoelectric element includes the p-type and N-type Bi of middle low-temperature space2Te3Class thermoelectric material.
3. vehicle mounted dynamic battery group according to claim 1, which is characterized in that set respectively on the battery pack positive and negative electrode
The lead-out wire for having the lead-out wire of charge and discharge and powering to thermoelectric components.
4. vehicle mounted dynamic battery group according to claim 3, which is characterized in that the lead-out wire and thermoelectric components of the power supply
Change-over switch is set in the circuit of composition.
5. vehicle mounted dynamic battery group according to claim 2, which is characterized in that the p-type Bi2Te3Class thermoelectric material includes
The material being shown below: (Bi1-xSbx)2Te3, 0.7≤x≤0.75.
6. vehicle mounted dynamic battery group according to claim 5, which is characterized in that the p-type Bi2Te3Class thermoelectric material be by
According to following methods preparation:
(1) it will be fitted into sintering quartz ampoule after vacuum sealing tube in described chemical formula ratio Bi, Sb and Te, in 700~850 DEG C
Under, in the resistance heating rocking furnace that waves of 100 °~130 ° amplitudes be sintered 36~48h；
(2) after being cooled to 600 DEG C with the rate of 3 DEG C/h, heat preservation is reduced the temperature to again with the rate of 1.5 DEG C/h after 1~2 hour
585℃；
(3) 550 DEG C are cooled to the rate of 3 DEG C/h after keeping the temperature 1~1.5 hour；
(4) room temperature, which is naturally cooled to, after annealing 48 hours obtains p-type Bi2Te3 class thermoelectric material.
7. vehicle mounted dynamic battery group according to claim 2, which is characterized in that the N-type Bi2Te3Class thermoelectric material is it
In at least one kind of element be the island structure tissue being segregated, sea portion therein is by the average grain diameter of C axis facing one direction
5 μm of crystal grain below are constituted；Island portion therein is made of the elongate grains that average length is 20~50 μm；The island portion is randomly divided
It is distributed in Hai Buzhong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711247613.5A CN109873096A (en) | 2017-12-01 | 2017-12-01 | A kind of vehicle mounted dynamic battery group of temperature adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711247613.5A CN109873096A (en) | 2017-12-01 | 2017-12-01 | A kind of vehicle mounted dynamic battery group of temperature adjustable |
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| Publication Number | Publication Date |
|---|---|
| CN109873096A true CN109873096A (en) | 2019-06-11 |
Family
ID=66914632
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711247613.5A Pending CN109873096A (en) | 2017-12-01 | 2017-12-01 | A kind of vehicle mounted dynamic battery group of temperature adjustable |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817188A (en) * | 1995-10-03 | 1998-10-06 | Melcor Corporation | Fabrication of thermoelectric modules and solder for such fabrication |
| CN101273474A (en) * | 2005-09-22 | 2008-09-24 | 宇部兴产株式会社 | Thermo-electric converting material and process for producing the same |
| CN103178204A (en) * | 2011-12-20 | 2013-06-26 | 财团法人工业技术研究院 | Solid-liquid diffusion bonding structure of thermoelectric module and method for manufacturing same |
| CN106449957A (en) * | 2016-11-14 | 2017-02-22 | 苏州科技大学 | Bismuth-telluride-based P-type thermoelectric material and preparation method thereof |
| CN206193565U (en) * | 2016-11-30 | 2017-05-24 | 长城汽车股份有限公司 | Thermostatic control device of battery |
-
2017
- 2017-12-01 CN CN201711247613.5A patent/CN109873096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817188A (en) * | 1995-10-03 | 1998-10-06 | Melcor Corporation | Fabrication of thermoelectric modules and solder for such fabrication |
| CN101273474A (en) * | 2005-09-22 | 2008-09-24 | 宇部兴产株式会社 | Thermo-electric converting material and process for producing the same |
| CN103178204A (en) * | 2011-12-20 | 2013-06-26 | 财团法人工业技术研究院 | Solid-liquid diffusion bonding structure of thermoelectric module and method for manufacturing same |
| CN106449957A (en) * | 2016-11-14 | 2017-02-22 | 苏州科技大学 | Bismuth-telluride-based P-type thermoelectric material and preparation method thereof |
| CN206193565U (en) * | 2016-11-30 | 2017-05-24 | 长城汽车股份有限公司 | Thermostatic control device of battery |
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Application publication date: 20190611 |
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| RJ01 | Rejection of invention patent application after publication |