CN206332140U - A kind of battery system - Google Patents
A kind of battery system Download PDFInfo
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- CN206332140U CN206332140U CN201720023987.8U CN201720023987U CN206332140U CN 206332140 U CN206332140 U CN 206332140U CN 201720023987 U CN201720023987 U CN 201720023987U CN 206332140 U CN206332140 U CN 206332140U
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- heating
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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
The utility model discloses a kind of battery system, including system casing (1) and internal at least two battery units (2) of system casing (1)；The battery unit (2) includes unit housings (21), battery bracket (22) and multiple battery cores (23), battery core (23) is fixed with battery bracket (22), there is space inside unit housings (21), the space is filled with conduction oil.Meanwhile, battery system also includes protection board (3) and temperature control device, is respectively used to the regulation and control of battery core (23) working condition and the regulation of temperature in battery system.The utility model passes through unique arrangement mode of battery core, oil immersed type design, protection board in battery unit performance monitoring, the combined type construction of system casing and using cooperatively for temperature control system to each battery core; use demand of the battery system under different temperatures environment can be met, and can further improve the security performance of battery system.
Description
Technical field
The utility model is related to new energy field of batteries, more particularly to a kind of new
Battery system.
Background technology
For the consideration of the energy and environment, electric automobile is achieved under the common promotion of national governments and automaker
Quickly development.Electric automobile subtracts as the significant change of energy-efficient automobile, undoubtedly automobile industry because it can really be realized
Arrange and the important development direction as automobile.Prepared however, the performance and quality of these vehicles largely rely on it
Battery system performance.
In electric automobile, electrokinetic cell is used using battery system form, and battery system is by multiple battery lists
Member is constituted, and battery unit includes multiple series windings and the battery core being connected in parallel.Battery core can be produced as energy-storage units in discharge and recharge
Raw electric reaction heat, so as to cause temperature change in battery unit；Ambient temperature can also directly affect battery list simultaneously
Temperature in member.It is too high or too low for temperature in battery unit to influence the bulk life time and stability of battery unit.High temperature can
To accelerate electrolyte in battery core, electrode and the rate of ageing of dividing plate, the rate of ageing of high-temperature part can be significantly faster than that low temperature part,
If persistently there is this physical difference between battery core, the uniformity of battery unit will be destroyed, causes the performance between battery core to mismatch,
Finally battery unit is set to fail.It is less than in temperature at 0 DEG C, lithium ion battery triggers battery core due to that can occur lithium ion reduction reaction
Internal short-circuit is without allowing charging.It follows that the topology layout of battery core and heat exchange work(in battery unit (or battery system)
The realization of energy is to influence the key factor of Development of Electric Vehicles.
At present, the heat exchange method of battery system is indirect heat exchange mode, and such as Chinese patent CN103247835B passes through
Phase-change material layers storage batteries module liberated heat is set in battery module；Chinese patent CN204011513U is by making electricity
Gap is formed between pond and heat emission hole is set on battery pack case and is radiated；Chinese patent CN105702894A is used and carried
The battery bracket of hole, and set the recess structure of water-proof ventilation to complete heat sinking function in case top.Chinese patent
CN105932368A sets samming component in battery bag, by the flowing velocity of cooling medium in samming component to control battery
The temperature of in-core.In terms of heating, conventional heating means are by heating the air in battery pack, making in the temperature of battery
Rise, such as CN105742745A discloses a kind of battery bag liquid cooling/heating system experimental rig, is less than when battery bag is operated in
Under 0 DEG C of low temperature condition, by battery bag outside electrically heated rod heating liquid, liquid is passed through in battery bag by pipeline and then
Battery bag is heated.
From the foregoing, the temperature control to battery system concentrates on noncontact heat exchange aspect now, heat transfer effect is paid no attention to
Think and high energy consumption.Therefore, a kind of adjustable battery system of temperature is needed badly to meet the use demand under different temperatures environment.
Utility model content
In order to solve the above problems, present inventor has performed studying with keen determination, as a result find：Battery core in battery unit is carried out
Rational deployment, fills conduction oil in battery unit, is equipped with the heating appliances and systems housing in battery unit
Cooling device, you can meet use demand of the battery system under different temperatures environment, and further increase battery system
Security, so as to complete the utility model.
The purpose of this utility model is to provide following aspect：
1. a kind of battery system, including the battery unit 2 of system casing 1 and at least two, the closing of system casing 1 are installed
In outside battery system, the battery unit 2 is connected in series；The battery unit 2 includes unit housings 21, battery bracket 22 and many
Individual battery core 23, the closing of unit housings 21 is installed on outside battery unit 2, and battery bracket 22 is located inside unit housings 21 with solid
Determine the presence of space inside battery core 23, unit housings 21, the space is filled with heat-conducting medium.
2. the battery system according to above-mentioned 1, wherein, the system casing 1 includes system inner casing successively from inside to outside
11 and thermostat layer 12, the system inner casing 11 is used for support system housing 1, and the thermostat layer 12 is used for the insulation of battery system；
Preferably, the thermostat layer 12 be three-layer sandwich structure, including interior overcoat, external protection coating and two overcoats it
Between heat-insulation layer, heat-insulation layer is fixed for the interior overcoat and external protection coating.
3. the battery system according to above-mentioned 1, wherein, unit housings 21 include open-topped body 211 and are located at
Opening sentences the cap 212 of closing body 211,
Body 211 from inside to outside successively include shell internal layer 213 and shell outer layer 214, the sealed cell unit 2 of shell internal layer 213, its
It is made up of macromolecular material, the macromolecular material is preferably polypropylene or phenolic resin, the shell outer layer 214 is sticked in shell
Outside layer 213, for supporting shell internal layer 213.
4. the battery system according to above-mentioned 1, wherein, in the battery unit 2 heat-conducting medium and battery bracket 22 and
Battery core 23 is directly contacted, and the heat-conducting medium is conduction oil, preferably transformer oil or modified transformer oil.
5. the battery system according to one of above-mentioned 1 to 4, wherein, battery bracket 22 includes the right support of parallel installation
Multiple through holes for being available for battery core 23 to insert are correspondingly arranged on plate 221 and left socle plate 222, right support plate 221 and left socle plate 222
223, the through hole 223 is arranged at least two rows or two row, it is preferable that the through hole 223 of adjacent rows or two row is staggered；
And/or
Battery core 23 is arranged into more than two rows or two row on battery bracket 22, and preferably adjacent rows or two row battery cores 23 are interlocked
Arrangement.
6. the battery system according to above-mentioned 5, wherein, the battery core 23 of same column passes through the welding rod 231 that is connected on positive pole
Parallel connection, the battery core 23 of adjacent two row is contacted by the fuse 232 being connected on welding rod 231；Preferably, the positive pole of battery core 23 and weldering
Bar 231 is welded by resistance spot welding or Laser Welding, and the negative pole of battery core 23 is welded with fuse 232 by supersonic welding；And/or
The fuse 232 is elastic component, and it bends in the shape of a spiral in whole or in part, preferably its one end that is connected with negative pole
Bend in the shape of a spiral.
7. the battery system according to one of above-mentioned 1 to 4, wherein, the battery system also includes temperature control system, described
Temperature control system includes heater 4, cooling device 5, temperature sensing device 6 and regulation device, and temperature sensing device 6 will be monitored
Temperature be transmitted to regulation device, regulation device determines startup and the pass of heater 4 or cooling device 5 according to the temperature of reception
Close.
8. the battery system according to above-mentioned 7, wherein, the heater 4 is to be arranged on one inside battery unit 2
Individual or multiple heating plates, preferably heating plate are laterally interposed in battery bracket 22, and more preferably heating plate is two, and one of them adds
Hot plate is laterally interposed in the bottom of battery bracket 22, and another heating plate is laterally interposed in the middle part of battery bracket 22, laterally inserts
The heating plate entered is parallel with the battery core 23 of arrangement in a row.
9. the battery system according to above-mentioned 7, wherein, the cooling device 5 includes being arranged on half on system casing 1
Conductor refrigerator, it is preferable that through hole is set on the thermostat layer 12 at the top of cooling device 5, semiconductor cooler is arranged on described
In through hole, one end of semiconductor cooler is connected with the outer surface of system inner casing 11, with the heat inside absorption system housing 1,
The other end contacts to radiate with extraneous air；And/or
The temperature sensing device 6 includes being separately positioned on the inside of battery unit 2 and battery unit 2 and system casing 1
Between multiple temperature sensitive members in cavity, its determine respectively the inside of battery unit 2 and battery unit 2 and system casing 1 it
Between temperature in cavity.
10. the battery system according to above-mentioned 8, wherein, the heating plate includes zone of heating 42, and the zone of heating 42 is produced
Life simultaneously transmits heat to outside, and it includes at least one heating unit 421, when heating unit 421 is multiple, each heating unit
There is space between 421 and by being connected in series；Preferably, the resistance wire that the heating unit 421 is arranged for bending；And/or
When heating plate is laterally interposed in 22 inside of battery bracket, the corresponding position of heating unit 421 corresponds to left and right two-phase
Space corresponding position between space between adjacent battery core 23, the adjacent heating unit 421 in left and right two corresponds to where battery core 23
Position.
A kind of battery system provided according to the utility model, has the advantages that：
(1) system casing uses composite construction in the utility model, greatly improves sealing, the heat insulating ability of battery unit
And shock resistance；
(2) use conduction oil as the heat-conducting medium for being filled in cell internal in the utility model, it is straight with battery core
Contact, and with performances such as high-flash, high fluidity, big specific heat and electric insulations, quickly can occur heat exchange with battery core, be easy to
The regulation and control of temperature in battery unit；
(3) heat-conducting medium is fluid form, and by its mobile performance, what available buffer foreign impacts were caused to battery system shakes
It is dynamic；
(4) battery core is arranged in the way of " plug hole " in the utility model, and this arrangement mode increases the sky between battery core
Gap, is easy to conduction oil to be flowed in battery core gap, is conducive to the raising of battery core and conduction oil heat exchange efficiency；
(5) one end for the fuse being connected in the utility model with battery core negative pole is bent in the shape of a spiral, this structure have compared with
Good ductility, compared to the linear pattern connection generally used at present, can be prevented effectively from the fuse fracture that battery core vibration is caused
Or come off；
(6) the scattered arrangement of heating unit in the utility model heater, heating unit corresponding position is sky between battery core
Space correspondence battery core between gap, adjacent heating unit, while avoiding part battery core from being directly heated, is more beneficial for by battery core
Between gap structure quickly transfer heat to the position away from thermal source；
(7) cooling device in temperature control system is the semiconductor cooler being arranged on system casing, its good refrigeration effect,
Reliability is high, and battery system is polluted without refrigerant.
Brief description of the drawings
Fig. 1 shows the perspective view of battery system in the utility model；
Fig. 2 shows the main cross section perspective view of battery system in the utility model；
Fig. 3 shows the utility model battery unit birds-eye perspective；
Fig. 4 shows battery unit B faces structural representation in Fig. 3；
Fig. 5 shows the enlarged diagram of dotted line circle inner structure in Fig. 4；
Fig. 6 shows the stereogram of battery bracket；
Fig. 7 shows the staggered schematic diagram of through hole on supporting plate；
Fig. 8 shows the structural representation of slot on supporting plate；
Fig. 9 shows the structural representation of supporting plate upper stop piece；
Figure 10 is Section A-A schematic diagram in Fig. 3；
Figure 11 shows the connection diagram between battery core when fuse is elastic component；
Figure 12 shows the main cross section schematic diagram of heater；
Figure 13 shows zone of heating structural representation in heater；
Figure 14 shows the enlarged diagram of dotted line circle inner structure in Fig. 2.
Drawing reference numeral explanation：
1- system casings；
11- system inner casings；
12- thermostat layers；
2- battery units；
21- unit housings；
211- bodies；
212- caps；
213- shell internal layers；
214- shell outer layers；
22- battery brackets；
221- right support plates；
222- left socle plates；
223- through holes；
224- slots；
225- catch；
23- battery cores；
231- welding rods；
232- fuses；
3- protection boards；
4- heaters；
41- backplane levels；
42- zones of heating；
421- heating units；
43- heat-conducting layers；
5- cooling devices；
6- temperature sensing devices.
Embodiment
It is described in detail below by the utility model, the characteristics of the utility model and advantage will be with these explanations
And become more apparent from, clearly.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
The utility model discloses a kind of battery system, as shown in figure 1, the battery system includes the He of system casing 1
At least two battery units 2 in system casing 1, the closing of system casing 1 is installed on outside battery system, the battery
It is connected in series between unit 2.
The system casing 1 is composite construction, as shown in Fig. 2 it includes system inner casing 11 and constant temperature successively from inside to outside
Layer 12, the system inner casing 11 and thermostat layer 12 are closely connected, and such as pass through bonding connection.The system inner casing 11 is with higher
The metal level of mechanical strength, for support system housing 1.The thermostat layer 12 is three-layer sandwich structure, including interior overcoat, outer
Heat-insulation layer between overcoat and two overcoats.The overcoat has stronger mechanical strength, and impact resistance is strong, is preferably
Metal material or macromolecular material, the heat-insulation layer is from the not good material of heat-transfer effect, such as rock cotton board, and thickness is 20~
30mm, the insulation for battery system.
In the utility model, battery unit 2 is the core component of battery system.As shown in Figures 3 to 5, battery unit 2 is wrapped
Unit housings 21, battery bracket 22 and multiple battery cores 23 are included, the closing of unit housings 21 is installed on outside battery unit 2, battery
Support 22 is located inside battery unit 2 to fix battery core 23.There is space between battery core 23, heat conduction is filled in the space and is situated between
Matter, for carrying out heat exchange with battery core 23, battery core 23 and battery bracket 22 are directly contacted with heat-conducting medium.
In a preferred embodiment, the heat-conducting medium is conduction oil, and battery bracket 22 and battery core 23 are immersed in and led
In deep fat.Conduction oil transformer oil for transformer oil or after modified, the modification refers to using transformer oil as matrix, right
The improvement that the performances such as the mobility of transformer oil are carried out.The conduction oil has high-flash, high fluidity, big specific heat and electric insulation
Etc. performance.Conduction oil is filled in inside battery unit 2, can directly be absorbed the heat of the generation of battery core 23 and be made the temperature of battery core 23 not
As for too high, and rely on its high fluidity in low temperature, can will be sent to whole battery list from the extraneous heat that be absorbed to rapidly
Member 2, makes battery unit 2 maintain in the range of specific uniform temperature.
In addition to above-mentioned heat exchange function, the conduction oil being filled in battery unit 2 relies on its fluid property, goes back outside available buffer
Boundary impacts the vibration to battery unit 2.
In the utility model, as shown in fig. 6, battery bracket 22 includes the right support plate 221 and left socle of parallel installation
The through hole 223 of multiple pluggable battery cores 23 is correspondingly arranged on plate 222, right support plate 221 and left socle plate 222.The through hole 223
At least two rows or two row are arranged on battery bracket 22, wherein, with the longitudinally mounted of right support plate 221 and left socle plate 222
On the basis of, set along right support plate 221 or the above-below direction of the plane of left socle plate 222 as longitudinal direction (Y-axis), along right support plate 221
Or the left and right directions of the plane of left socle plate 222 is that laterally (X-axis), through hole 223 is arranged to arrange in the vertical, is arranged into the horizontal
OK.Preferably, the through hole 223 of adjacent rows or two row is staggered.Refer to as shown in fig. 7, being staggered：Positioned at n-th (n >=
1) centre distances of the through hole 223a of row away from through hole 223b closest with it in the (n+1)th row is L1, with it in being arranged with n-th+2
Closest through hole 223c centre distance is that L3, through hole 223b and through hole 223c centre distance are L2, if L1+L2 ＞
L3, then be to be staggered between the through hole 223.
As shown in figure 8, correspondence is set on right support plate 221 and the inner side of left socle plate 222 (being used for towards the side of battery core 23)
At least two pairs slots 224 parallel with the through hole 223 of arrangement in a row are equipped with, residing slot 224 has longitudinal cross-section opening for U-shaped
The opening direction of slot 224 on oral area, right support plate 221 is towards left socle plate 222, and the slot 224 on left socle plate 222 is open
Direction is towards right support plate 221, and one pair of which slot 224 is located at right support plate 221 and the top of left socle plate 222, for installing
The protection board 3 of battery unit 2, remaining slot 224 is located at other arbitrary heights of right support plate 221 and left socle plate 222, uses
In the installation of other functions element.
Multiple scattered oil throughs are additionally provided with right support plate 221 and left socle plate 222, the oil through is easy to heat conduction to be situated between
Matter (conduction oil) passes in and out battery bracket 22, accelerates heat-conducting medium circulation, meanwhile, oil through can be additionally used in consolidating for other function element
It is fixed, as the conducting element (such as following welding rods 231) between battery core 23 may pass through leading at the top of right support plate 221 and left socle plate 222
Oilhole is fixedly mounted on protection board.
It is used to limit the movement of the axial direction of battery core 23 as shown in figure 9, right support plate 221 and the outside of left socle plate 222 are provided with
Catch 225, the catch 225 protrudes laterally, and thickness is 2~4mm.Catch 225 carries out partial occlusion to through hole 223, non-
Shield portions can be used for the fixed installation of conducting element (such as welding rod) between battery core 23.
In the utility model, as shown in Figure 10, two rows or two row above battery cores 23 are inserted with battery bracket 22, preferably
Ground, adjacent rows (row) battery core 23 is staggered.This arrangement mode increases the space between battery core 23, is easy to conduction oil in battery core
Flowed in 23 gaps, be conducive to the raising of battery core 23 and conduction oil heat exchange efficiency.In view of the composition of conduction oil, to avoid heat conduction
Corrosion of the oil to battery bracket 22, the selection polypropylene material of battery bracket 22 or phenolic resin material, preferably polypropylene
Material injection is formed.
In a preferred embodiment, the both positive and negative polarity of the battery core 23 is located at the both sides of battery core 23, same column battery core 23
With pendant polar identical, the homonymy opposite polarity of adjacent two row battery core 23.Same column battery core 23 passes through the welding rod 231 that is connected on positive pole
Parallel connection, adjacent two row battery core 23 is contacted by the fuse 232 being connected on welding rod 231.
In further preferred embodiment, the welding rod 231 is steel nickel plating material, wide 5~10mm, thickness 150~200
μm.The fuse 232 is aluminium foil, and the wide 2~3mm of fuse 232 is thick 50~60 μm.As shown in figure 11, fuse 232 is bullet
Property component, it bends in the shape of a spiral in whole or in part, and preferably it bends in the shape of a spiral with one end that the negative pole of battery core 23 is connected.Spiral
Sigmoid has preferable ductility, compared to the linear pattern connection generally used at present, can be prevented effectively from the vibration of battery core 23 and make
Into fuse 232 be broken or come off.
In embodiment still more preferably, block is set, the positive pole of battery core 23 leads to welding rod 231 on the positive pole of battery core 23
Resistance spot welding or Laser Welding welding are crossed, the negative pole of battery core 23 is welded with fuse 232 by supersonic welding.
Resistance spot welding, Laser Welding and supersonic welding are the welding manners commonly used during battery core 23 is fixed.Resistance spot welding is profit
Pressurizeed and be powered with columnar electrode, the welding method of a solder joint is welded into overlap joint work piece interface.Laser Welding is by high intensity
Bombardment with laser beams is to metal surface, by the interaction of laser and metal, is metal molten formation welding.And supersonic welding is
The body surface that need to be welded is delivered to using dither ripple, in the case of pressurization, make two body surface phase mutual friction and
The fusion formed between molecular layer.From the foregoing, resistance spot welding and Laser Welding can be produced compared to supersonic welding in welding position
Raw high heat, during using thin plate connection electrode, easily punches electrode, so that short circuit is caused, and supersonic welding is using slab connection
During electrode, because calorific value is relatively low, rosin joint phenomenon is also easy to produce, with reference to the These characteristics of three kinds of welding, while considering the low of electric resistance welding
High conductivity after cost, the pinpoint accuracy of Laser Welding and supersonic welding welding, the final positive pole for determining battery core 23 and welding rod 231
Welded by resistance spot welding or Laser Welding, the negative pole of battery core 23 is welded with fuse 232 by supersonic welding.
In a preferred embodiment, as shown in Fig. 4 and Figure 10, to the battery core 23 arranged on battery bracket 22
When carrying out series and parallel connection, it can be operated by following step：
The one end of fuse 232 is welded on welding rod 231, wherein, the spacing of two pads corresponds to the adjacent electricity of same column two
The center spacing of core 23；The block of welding rod 231 and the positive pole of battery core 23 is fixed by resistance spot welding or Laser Welding, now,
The other end (being preferably spiral end) of fuse 232 is taken on the negative pole of adjacent column battery core 23；Fuse is made by supersonic welding
232 other end (being preferably spiral end) is connected with the negative pole of adjacent column battery core 23.Ipsilateral is completed in the battery core 23 to having arranged
After series and parallel is fixedly connected, then carry out being fixedly connected for another side.
In the utility model, protection board 3 is installed by the slot 224 at the top of battery bracket 22, the protection board 3 is connected
Welding rod 231, total negative wire and the total positive wire of the positive pole of battery core 23 are connected with protection board 3.The protection board 3 includes multiple
Battery management unit, the working condition for regulating and controlling battery core 23 provides battery core 23 and overcharges protection, Cross prevention, excessively stream or short
Road is protected, and each battery core 23 in battery unit 2 is all reached balanced consistent charging and discharging state.
In the utility model, as shown in Figure 10, for surrounding the unit housings 21 of battery unit 2 including open-topped
Body 211 and the cap 212 that closing body 211 is sentenced positioned at opening.
Body 211 is composite construction, and it includes shell internal layer 213, tack coat and shell outer layer 214 successively from inside to outside, wherein,
The direct thermal contact conductance medium of shell internal layer 213, the sealing for battery unit 2.Shell internal layer 213 is made from macromolecular material,
It is described to avoid the leakage of conduction oil when heat-conducting medium uses transformer oil, it is considered to its dissolubility to a variety of macromolecular materials
Shell internal layer 213 is polypropylene layer or novolac resin layer, and its thickness is 2~4mm.
Shell outer layer 214 has high mechanical properties, sizing and protection for battery unit 2.In battery system by strong
After shock, extruding of the reduction impact to battery unit 2 makes battery unit 2 not produce or only produce compared with small deformation, it is to avoid battery list
The a large amount of heat production caused by being squeezed of member 2, the situation such as smolder, burn or explode.Preferably, the shell outer layer 214 is stainless
Steel plate or alloy-steel plate, its thickness are 0.5~1mm.When the combination of body 211 is installed, shell internal layer 213 is inserted in the structure of shell outer layer 214
Into casing in, to the external heat of shell outer layer 214 to 80 DEG C or so, be heated into the shell internal layer 213 with the joint of shell outer layer 214
Shell internal layer 213 is bonded on shell outer layer 214 after molten condition, cooling, and the part shell internal layer 213 after melting forms described viscous
Tie layer.
Cap 212 is formed in one, or many block parts are spliced, under T-shaped structure preferably wide at the top and narrow at the bottom or upper width
Narrow trapezium structure.The lower end of cap 212 is stretched into body 211 is open, and the open top with body 211 mutually agrees with.Under cap 212
The possible thermal contact conductance medium in end, to ensure the sealing of unit housings 21, the lower end of cap 212 or cap 212 are overall by electricity
It is prepared by wood, epoxy resin or phenolic resin.When being sealed to the battery unit 2, in the side surface upper part of body 211, by inserting
Entering the fasteners such as rivet makes body 211 be closely connected with the lower end of cap 212.
In the utility model, when heat-conducting medium is conduction oil, conduction oil inevitably volatilizees in use
Make the reduction of its liquid level, to make conduction oil be supplemented in time, set oil mass to monitor at the top of unit housings 21 (i.e. on cap 212)
System.The oil-mass monitoring system has the oil syringe and oil level indicator of conduction oil including storage inside.When oil level indicator measures conduction oil
When liquid level is less than setting value, oil mass supplement is carried out to battery unit 2 by oil syringe.
Because temperature is larger on the efficiency for charge-discharge influence of battery system, thus to the work of battery unit in battery system 2
Have required as temperature, when battery core 23 is lithium ion battery in such as battery unit 2, it requires that charging temperature is 5~30 DEG C, electric discharge
Temperature is -10~30 DEG C.When ambient temperature long-time is higher than 30 DEG C or less than 5 DEG C, needed further in battery system
Temperature control system is set to ensure the charge and discharge condition of battery unit 2.
In the utility model, the temperature control system includes heater 4, cooling device 5, temperature sensing device 6 and regulation and control
Device.The associated temperature of battery unit 2 is transmitted to regulation device by temperature sensing device 6, and regulation device is according to the temperature received
Determine the working condition of heater 4 and cooling device 5.
As shown in Figure 10, the heater 4 is to be arranged on one or more heating plates inside battery unit 2, heating
Plate is directly contacted with heat-conducting medium.The shape of heating plate is not limited, preferably rectangular heating plate.The heating plate can be arranged on
On the inwall of shell internal layer 213, it may also be arranged on battery bracket 22, preferably heating plate is arranged on battery bracket 22, you can insert
In the slot 224 for entering right support plate 221 and the inner side of left socle plate 222, consolidated by right support plate 221 and left socle plate 222
It is fixed.When the number of heating plate is one, it is inserted in the bottom of battery bracket 22；When electric hot plate is multiple, it is inserted in battery
At different height inside support 22, it is preferable that the number of heating plate is two, one of laterally inserted battery branch of heating plate
The bottom of frame 22, the middle part of the laterally inserted battery bracket of another heating plate 22, heating plate on battery bracket 22 with arrangement in a row
Battery core 23 is parallel.
In a preferred embodiment, as shown in figure 12, the heating plate includes backplane level 41, zone of heating 42 and led
Thermosphere 43, the zone of heating 42 is located between backplane level 41 and heat-conducting layer 43, and heat-conducting layer 43 is located at the top of zone of heating 42.The bottom
Flaggy 41 is used to support zone of heating 42 and heat-conducting layer 43, and the zone of heating 42 is used to produce heat；The heat-conducting layer 43 has resistance to
High temperature and electrical insulating property, it, which is sealed on zone of heating 42, is used for the transmission of heat.
As shown in figure 13, zone of heating 42 includes at least one heating unit 421, when heating unit 421 is multiple, respectively adds
The independent arrangement of hot cell 421.Preferably, each heating unit 421 is by being connected in series, and current entry and electricity outlet are located at heating
Same one end of layer 42.The heating unit 421 is the resistance wire of bending arrangement, the resistance wire that such as S-shaped is back and forth arranged.The resistance
Silk is single metallic resistance silk, alloy resistance wire or non-metallic resistor thread, and the single metallic resistance silk includes Mo, W, Ta resistance
Silk, the alloy resistance wire includes Ni-Cr alloy or Fe-Cr-Al alloy resistance wires, non-metallic resistor silk include graphite or
Carborundum resistance wire, preferably Ni-Cr alloy resistance wire, the width of more preferably described resistance wire is 1~3mm, thickness is 20~
30 μm, resistivity is 7.3 × 10-6Ω m, resistance wire maximum heating temperature is 50 DEG C.
In further preferred embodiment, length direction arrangement of the heating unit 421 along heating plate is in a row
Or multirow.Preferably, width of the two adjacent heating units 421 of left and right on the length direction of heating plate is identical in colleague, and/or
The spacing of two adjacent heating units 421 of colleague left and right is equal.It is highly preferred that two adjacent heating units 421 of the colleague left and right
Spacing is equal to the spacing of two adjacent battery cores 23 of colleague left and right on battery bracket 22.As shown in figure 13, heating unit 421 is in zone of heating
It is arranged into two rows, two rows that heating unit 421 is with center line symmetry arrangement in the ranks in 42, each heating unit 421 is in heating plate
Width on length direction is identical, and the spacing of each adjacent heating unit 421 of colleague is equal.
In embodiment still more preferably, when heating plate is laterally interposed in 22 inside of battery bracket, heating is single
Sky between the space that first 421 corresponding positions correspond between two adjacent battery cores 23 of left and right, the adjacent heating unit 421 in left and right two
Gap corresponding position corresponds to the position of battery core 23.The staggered mode of the respective outer side edges battery core 23 of zone of heating 42, is keeping away
Exempt from part battery core 23 it is directly heated while, be more beneficial for quickly transferring heat to far by the gap structure between battery core 23
From the position of thermal source.
In a preferred embodiment, the backplane level 41 is flat board, and preferably upper surface is provided with the flat board of recess,
Arranged inside the recess heating unit 421, recess peripheral outer lips can be used for heating plate being fixed on battery bracket 22
On.Preferably, the thickness of backplane level 41 is 2mm, and recess depths are 1mm.Backplane level 41 has high intensity, high temperature resistant and electricity exhausted
Edge, its material is preferably phenolic resin, polypropylene or bakelite.
In a preferred embodiment, the heat-conducting layer 43 is silica gel.Silica gel is electrically insulated and high temperature resistant, and it is chemically
Can be with physical property variation with temperature very little.Meanwhile, it is sealed as binding material to zone of heating 42.
Heating plate can be prepared by following techniques：Washing away bakelite plate central region makes into recess, by one in recess
Or the densely arranged heating unit arranged at interval of multiply resistance wire, liquid-state silicon gel is poured into recess, resistance wire, silica gel is sealed
Heating plate is produced after solidification.
In the utility model, as shown in Fig. 2 and Figure 14, the cooling device 5 includes being arranged on half on system casing 1
Conductor refrigerator, specifically, sets through hole, semiconductor cooler is arranged on described on the thermostat layer 12 at the top of system casing 1
In through hole, one end of semiconductor cooler is connected with the outer surface of system inner casing 11, with the heat inside absorption system housing 1,
The other end contacts to radiate with extraneous air.The number of the semiconductor cooler is 2~6, to meet cooling demand.Partly lead
Chiller includes semiconductor chilling plate, and it is a kind of heat pump of utilization semi-conducting material Peltier effects, available for space
Limited occasion, its reliability is high, and without refrigerant pollution.When direct current passes through two kinds in semiconductor chilling plate different semiconductors
Material in series into galvanic couple when, can be absorbed respectively at the two ends of galvanic couple heat and release heat, it is possible to achieve the purpose of refrigeration.
As shown in figs. 2 and 10, in a preferred embodiment, the temperature sensing device 6 includes setting respectively
Multiple temperature sensitive members in cavity inside battery unit 2 and between battery unit 2 and system casing 1.Positioned at being
Temperature sensitive member in the system internal cavity of housing 1 is used for the external temperature for determining battery unit 2, and the height of this temperature is heating
The foundation that device 4 or cooling device 5 start；And in heater 4 or cooling device 5 are run, inside battery unit 2
The internal temperature that temperature sensitive member is determined is the foundation of temperature adjusting.Temperature sensitive member inside battery unit 2 is at least
One, preferably several, the monitoring internal temperature of battery unit 2 and regulation are easy in the setting of multiple temperature sensitive members.
During the use of battery unit 2, the mode of operation of temperature control system is：Temperature sense in the internal cavity of system casing 1
Answer element to determine the local environment temperature of battery unit 2, when this environment temperature is less than first threshold, electricity is started by regulation device
Heater 4 in pool unit 2, now carries out temperature feedback by temperature sensitive member inside each battery unit 2, when measuring
Certain battery unit 2 in temperature when reaching Second Threshold, control this heater 4 of battery unit 2 to be stopped, other do not reached
Battery unit 2 to Second Threshold continues to heating；Stop after heating, when in certain battery unit 2 temperature drop to the 3rd threshold value
When, then secondary control this inner heating device 4 of battery unit 2 startup；And so on regulate and control, it is ensured that the internal temperature of battery unit 2 is tieed up
Hold between Second Threshold and the 3rd threshold value.Battery unit 2 is carried out under this temperature control mode to charge, and coordinates the insulation of thermostat layer 12
Effect, can make the 24h after charging complete of battery unit 2 be maintained at more than 0 DEG C, that is, complete once to charge, need not be opened again in 24h
Dynamic heater 4 is heated, and then reduces energy consumption.Wherein, the threshold temperature values of first threshold temperature value (such as 5 DEG C) ＜ the 3rd
(such as 10 DEG C) ＜ Second Thresholds temperature value (such as 15 DEG C).
When temperature sensitive member outside battery unit 2 measures environment temperature higher than four threshold values, pass through regulation device
Cooling device 5 on activation system housing 1, after cooling device 5 is run, then passes through the temperature sensitive member inside battery unit 2
Temperature feedback is carried out, when temperature drops to five threshold values in certain battery unit 2, controls cooling device 5 in the battery unit 2 to stop
Other battery units 2 for being not up to the 5th threshold value are continued to cooling by work；Stop after cooling, environment temperature makes certain battery list
When temperature rises to four threshold values in member 2, cooling device 5 is controlled to start again；Reciprocal regulation and control, make the internal temperature of battery unit 2
Maintain between the 4th threshold value and the 5th threshold value.Wherein, the threshold temperature values (such as 30 of the 5th threshold temperature value (such as 25 DEG C) ＜ the 4th
℃)。
From the foregoing, the utility model is set by unique arrangement mode of battery core 23, oil immersed type in battery unit 2
Meter, the combined type construction of the performance monitoring of each battery core 23 of 3 pairs of protection board, system casing 1 and using cooperatively for temperature control system,
Use demand of the battery unit 2 under different temperatures environment can be met, and can further improve the security performance of battery unit 2.
Embodiment
Embodiment 1
A kind of lithium battery system, includes the battery unit 2 of 10 series windings, and the system shell for sealed cell unit 2
Body 1.The system casing 1 includes metal system inner casing 11 and thermostat layer 12, and the thermostat layer 12 is by two metal level clamping rocks
Cotton flaggy is constituted.
Battery unit 2 includes unit housings 21, battery bracket 22 and the battery core 23 being arranged on battery bracket 22, the electricity
Core 23 selects 18650 type lithium ion batteries.There is space inside unit housings 21, the space is filled with conduction oil, i.e. battery
Support 22 and battery core 23 are directly contacted with conduction oil.Battery bracket 22 is molded from polypropylene material, and often row can accommodate 20
Root battery core 23, the battery core 23 that each column can be accommodated in 10 battery cores 23, adjacent rows is staggered.When battery core 23 is arranged, same column electricity
Core 23 with pendant polar identical, the homonymy opposite polarity of adjacent two row battery core 23.Same column battery core 23 is by being connected on positive pole
Steel plating nickel electrode 231 is in parallel, and adjacent two row battery core 23 is contacted by the aluminium foil fuse 232 being connected on welding rod 231, described to protect
The dangerous width of silk 232 2mm, thick 50 μm, the one end that is connected with negative pole is bent in the shape of a spiral.Meanwhile, the welding of the positive pole of battery core 23 and welding rod 231
Mode is resistance spot welding, and the negative pole of battery core 23 is supersonic welding with the welding manner of fuse 232.At the top of battery bracket 22
Welding rod 231, total negative wire and the total positive pole that the connection positive pole of battery core 23 is fixed with installation protection board 3, the protection board 3 draw
Line, the protection board 3 also includes multiple battery management units, the working condition for monitoring battery core 23.For surrounding battery list
The unit housings 21 of member 2 include open-topped body 211 and the cap 212 closely sealed for body 211, wherein, the body
211 include metal-back outer layer 214 and polypropylene shell internal layer 213.
Temperature control system is additionally provided with lithium battery system, it includes heater 4, cooling device 5, the and of temperature sensing device 6
Regulation device.Wherein, heater 4 includes being transversely mounted on the heating plate of the middle part of battery bracket 22 and bottom.The heating plate
Include backplane level 41, zone of heating 42 and heat-conducting layer 43 successively from bottom to top, zone of heating 42 includes the length direction along heating plate
The heating unit 421 of two rows is arranged into, often row there are 10 heating units 421.The heating unit 421 is that resistance wire bends arrangement
Form, each heating unit 421 is connected in series, wherein, the resistance wire maximum heating temperature is 50 DEG C.The backplane level 41 is
Flat board thick 2mm, its upper surface is provided with the recess of 1mm depth, the heating unit 421 of being arranged inside recess.The heat conduction
Layer 43 is silica gel, and it has the effect of Heat Conduction Material, binding agent and encapsulant concurrently.
The cooling device 5 includes 4 semiconductor coolers for being arranged on the top of system casing 1, semiconductor cooler
The outer surface of one end connection metal system inner casing 11, the other end is exposed in air.The temperature sensing device 6 is to set respectively
Multiple temperature sensitive members in the cavity in each inside of battery unit 2 and between battery unit 2 and system casing 1 are put,
Wherein, each inside of battery unit 2 includes the temperature sensitive member of 12 scattering devices, between battery unit 2 and system casing 1
Cavity in set 1 temperature sensitive member.Heater 4, cooling device 5, temperature sensing device 6 are electric with regulation device respectively
Property connection, regulation device is turned on and off according to the temperature information control heater 4 or cooling device 5 that receive.
The above-mentioned lithium battery system equipped with temperature control system, in bar of the residing external environment less than -50 DEG C and higher than 55 DEG C
The internal temperature of battery unit 2 is Z can be continuously maintained under part, during work and is in 10~30 DEG C of scopes, temperature control deviation is ± 2 DEG C.Herein
In temperature range, battery core charge and discharge cycles number of times is up to 800~1000 times.
The utility model is described in detail above in association with embodiment and exemplary example, but these are said
It is bright to be interpreted as to limitation of the present utility model.It will be appreciated by those skilled in the art that without departing from the utility model spirit and
In the case of scope, technical solutions of the utility model and embodiments thereof can be carried out with a variety of equivalencings, modification or improved,
These are each fallen within the range of the utility model.Protection domain of the present utility model is determined by the appended claims.
Claims (10)
1. a kind of battery system, it is characterised in that including system casing (1) and at least two battery units (2), the system shell
Body (1) closing is installed on outside battery system, and the battery unit (2) is connected in series；
The battery unit (2) includes unit housings (21), battery bracket (22) and multiple battery cores (23), the unit housings
(21) closing is installed on battery unit (2) outside, and being fixed with battery bracket (22) in battery core (23), unit housings (21) has sky
Gap, the space is filled with heat-conducting medium.
2. battery system according to claim 1, it is characterised in that the system casing (1) includes successively from inside to outside
System inner casing (11) and thermostat layer (12)；
The thermostat layer (12) is three-layer sandwich structure, including interior overcoat, external protection coating and heat-insulation layer between the two, institute
State interior overcoat and heat-insulation layer is fixed external protection coating.
3. battery system according to claim 1, it is characterised in that unit housings (21) include open-topped body
(211) cap (212) of closing body (211) and positioned at opening is sentenced,
Body (211) includes shell internal layer (213), tack coat and shell outer layer (214), shell internal layer (213) sealing successively from inside to outside
Battery unit (2), it is made up of macromolecular material, and the shell outer layer (214) sticks to shell internal layer (213) outside with supporting shell internal layer
(213)。
4. battery system according to claim 1, it is characterised in that
The interior heat-conducting medium of the battery unit (2) is directly contacted with battery bracket (22) and battery core (23), and the heat-conducting medium is
Transformer oil or modified transformer oil.
5. the battery system according to one of Claims 1-4, it is characterised in that
Battery bracket (22) includes the right support plate (221) and left socle plate (222) of parallel installation, right support plate (221) and a left side
Multiple through holes (223) for being available for battery core (23) to insert are correspondingly arranged on supporting plate (222), the through hole (223) is arranged at least
The through hole (223) of two rows or two row, adjacent rows or two row is staggered；
Battery core (23) is arranged into more than two rows or two row on battery bracket (22), and the battery core (23) of adjacent rows or two row is interlocked
Arrangement.
6. battery system according to claim 5, it is characterised in that the battery core (23) of same column is by being connected on positive pole
Welding rod (231) is in parallel, and the battery core (23) of adjacent two row is contacted by the fuse (232) being connected on welding rod (231).
7. the battery system according to one of Claims 1-4, it is characterised in that the battery system also includes temperature control system
System, the temperature control system includes heater (4), cooling device (5), temperature sensing device (6) and regulation device, temperature sense
The temperature monitored is transmitted to regulation device by device (6), and regulation device determines heater (4) or cooling according to the temperature of reception
The startup and closing of device (5).
8. battery system according to claim 7, it is characterised in that the heater (4) is to be laterally interposed in battery
The internal one or more heating plates of support (22), laterally inserted heating plate is parallel with the battery core (23) of arrangement in a row.
9. battery system according to claim 7, it is characterised in that
The cooling device (5) includes the one or more semiconductor coolers being arranged on system casing (1), cooling device
(5) thermostat layer (12) at the top of is provided with through hole, and semiconductor cooler is arranged in the through hole, one end of semiconductor cooler
Be connected with the outer surface of system inner casing (11), with the internal heat of absorption system housing (1), the other end contacted with extraneous air with
Radiating；And/or
The temperature sensing device (6) includes multiple temperature sensitive members, its be separately positioned on battery unit (2) it is internal and
Between battery unit (2) and system casing (1) in cavity, determine that battery unit (2) is internal respectively and battery unit (2) with
Temperature between system casing (1) in cavity.
10. battery system according to claim 8, it is characterised in that the heating plate includes zone of heating (42), described to add
Thermosphere (42) produces and transmits heat to outside, and it includes at least one heating unit (421), is many in heating unit (421)
When individual, there is space between each heating unit (421) and by being connected in series；
Heating plate be laterally interposed in battery bracket (22) it is internal when, heating unit (421) corresponding position correspond to left and right two-phase
Space corresponding position between space between adjacent battery core (23), the adjacent heating unit (421) of left and right two corresponds to battery core
(23) position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720023987.8U CN206332140U (en) | 2017-01-10 | 2017-01-10 | A kind of battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720023987.8U CN206332140U (en) | 2017-01-10 | 2017-01-10 | A kind of battery system |
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| Publication Number | Publication Date |
|---|---|
| CN206332140U true CN206332140U (en) | 2017-07-14 |
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ID=59294617
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107887546A (en) * | 2017-11-15 | 2018-04-06 | 山东联星能源集团有限公司 | A kind of energy storage device of good heat dissipation |
| CN108199118A (en) * | 2018-02-10 | 2018-06-22 | 宿州市艾尔新能源有限公司 | A kind of metal-air battery using phase-change temperature control |
| CN109037513A (en) * | 2018-06-04 | 2018-12-18 | 蔚来汽车有限公司 | Battery pack and battery loading system |
| CN109546257A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Battery unit package device and solar energy unmanned plane with it |
| CN114628841A (en) * | 2021-12-27 | 2022-06-14 | 浙江零跑科技股份有限公司 | New energy vehicle battery pack |
| CN114883714A (en) * | 2021-02-05 | 2022-08-09 | 北京好风光储能技术有限公司 | High-capacity battery |
| CN116505137A (en) * | 2023-06-28 | 2023-07-28 | 吉林大学 | Bionic impact-resistant light-weight new energy automobile battery pack |
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| CN109546257A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Battery unit package device and solar energy unmanned plane with it |
| CN109546257B (en) * | 2017-09-21 | 2021-09-07 | 航天科工惯性技术有限公司 | Group battery packaging hardware and have its solar energy unmanned aerial vehicle |
| CN107887546A (en) * | 2017-11-15 | 2018-04-06 | 山东联星能源集团有限公司 | A kind of energy storage device of good heat dissipation |
| CN108199118B (en) * | 2018-02-10 | 2023-10-10 | 宿州市艾尔新能源有限公司 | Metal-air battery adopting phase change temperature control |
| CN108199118A (en) * | 2018-02-10 | 2018-06-22 | 宿州市艾尔新能源有限公司 | A kind of metal-air battery using phase-change temperature control |
| CN109037513A (en) * | 2018-06-04 | 2018-12-18 | 蔚来汽车有限公司 | Battery pack and battery loading system |
| CN109037513B (en) * | 2018-06-04 | 2022-06-10 | 蔚来(安徽)控股有限公司 | Battery pack and battery filling system |
| CN114883714A (en) * | 2021-02-05 | 2022-08-09 | 北京好风光储能技术有限公司 | High-capacity battery |
| CN114883714B (en) * | 2021-02-05 | 2023-11-14 | 好风光储能技术(成都)有限公司 | High-capacity battery |
| CN114628841A (en) * | 2021-12-27 | 2022-06-14 | 浙江零跑科技股份有限公司 | New energy vehicle battery pack |
| CN114628841B (en) * | 2021-12-27 | 2024-05-14 | 浙江零跑科技股份有限公司 | New energy vehicle battery pack |
| CN116505137B (en) * | 2023-06-28 | 2023-09-01 | 吉林大学 | Bionic impact-resistant light-weight new energy automobile battery pack |
| CN116505137A (en) * | 2023-06-28 | 2023-07-28 | 吉林大学 | Bionic impact-resistant light-weight new energy automobile battery pack |
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