CN209374628U - Battery module - Google Patents
Battery module Download PDFInfo
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- CN209374628U CN209374628U CN201920259893.XU CN201920259893U CN209374628U CN 209374628 U CN209374628 U CN 209374628U CN 201920259893 U CN201920259893 U CN 201920259893U CN 209374628 U CN209374628 U CN 209374628U
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- battery
- temperature
- heat conduction
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- component
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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
Abstract
The utility model provides a kind of battery module.Battery module includes the cooling surface of battery pack, the radiator for accommodating battery pack, the electric heater in radiator and a part as radiator.Battery module includes: heat conduction component, is set between battery pack and cooling surface；Heat insulating component, between the bottom plate of the setting battery pack in battery pack and radiator, and pyroconductivity is lower than heat conduction component；And bimetallic thermostat, the bimetallic of change in shape with the temperature according to battery pack, according to the bimetallic shape, heat conduction component close to cooling surface and battery pack thermally conductive state and heat conduction component far from switching between the non-conductive state of at least either in cooling surface and battery pack.Battery module provided by the utility model efficiently can be heated or be cooled down to battery pack.
Description
Technical field
The utility model relates to a kind of battery module (battery module).More specifically, the utility model relates to
A kind of heater (heater) heated including battery, to the battery and cooling cooling end is carried out to the battery
Battery module.
Background technique
The electric vehicles such as hybrid vehicle or electric car are driven by using the electric power supplied from battery module
Motor (motor) and travel.Battery module includes: that can fill multiple lithium ions (lithium ion) battery or nickel-metal hydride battery etc.
The monocell of electric discharge is laminated and the battery pack of composition；And the framework of the box-like of the receiving battery pack.
Moreover, in battery module, for the temperature range that the intracorporal battery pack control of frame is suitable for charge and discharge, and
Cooling cooling device is carried out equipped with the heating device heated to battery pack or to battery pack.
Such as in patent document 1, a kind of battery module of air-cooled type is disclosed comprising: multiple batteries；Framework is received
Hold these batteries；Heating part is set in framework, issues the heat for being heated to battery；And air blower (blower
Fan), supplied from the air inlet for being formed in framework into framework for carrying out cooling air to battery.The invention of patent document 1
In, in order to avoid when being cooled down using air blower, being located at the flowing that the heating part near battery hampers air, and will add
Hot portion is set to the position slightly remote from battery.Moreover, in the invention of patent document 1, heating part use is risen according to temperature and
The bimetallic (bimetal) of change in shape, to make the heating part connect when making heating part fever to heat to battery
Nearly battery.Heating part can be passed through by making heating part close to battery in the heating of battery according to the invention of patent document 1
Efficiently battery is heated, but can prevent while cooling heating part hamper cooling.
[existing technical literature]
[patent document]
Patent document 1: Japanese Patent Laid-Open 2012-79441 bulletin
Utility model content
[utility model problem to be solved]
But in the invention of patent document 1, it is necessary to so that heating part is generated heat until bimetallic shape changes, with
Make heating part close to battery, thus expends the time before heating heating part.Moreover, in the invention of patent document 1, when
The temperature of ambient atmos declines, thus framework itself when the temperature drops, being set to the temperature of its internal battery can also decline.Cause
This, in the low temperature for requiring to heat using heating part, the framework cooled down by ambient atmos is possible to heating part can be interfered to electricity
The heating in pond.
The purpose of this utility model is to provide the battery moulds that one kind efficiently can heat battery or cool down
Block.
[technical means to solve problem]
(1) battery module (such as aftermentioned battery module 1) of the utility model includes: battery (such as aftermentioned battery
Group is 2)；Framework (such as aftermentioned radiator 7), accommodates the battery, and cooled down by refrigerant；Heater is (after such as
The electric heater 3 stated), it is set to the framework；And cooling end (such as aftermentioned cooling surface 76), it is a part of the framework
Or contact, to the component of the framework, the battery module is characterized in that including: heat conduction component (such as aftermentioned heat transfer
Component 5), it is set between the battery and the cooling end；And switching device (such as aftermentioned bimetallic thermostat
(thermostat) 6), have according to the temperature of the battery and state change component (such as aftermentioned double gold of variable condition
Belong to 62), according to the state of the state change component, switches between thermally conductive state and non-conductive state, the thermally conductive state
It is state of the heat conduction component close to the cooling end and the battery, the non-conductive state is the heat transfer structure
State of the part far from at least either in the cooling end and the battery.
(2) in this case it is preferable that further include: heat insulating component (such as aftermentioned heat insulating component 4), be set to the electricity
Between the setting unit of the setting battery in pond and the framework, and pyroconductivity is lower than the heat conduction component.
(3) in this case it is preferable that further include: heater, set on the inside of the framework, the heater is to set
In the cooling end close to the position of the battery.
(4) preferably, the state change component contact to contact with the battery component (such as it is aftermentioned heat biography
Lead component 5) or the battery.
(5) in this case it is preferable that the framework includes cooling wall portion (such as aftermentioned left side wall 73), institute
Portion is formed with the cooling water flow for being provided as cooling water (such as the aftermentioned cooling water 75a) circulation of refrigerant including stating cooling wall portion
Road (such as aftermentioned cooling water flow path 75), the cooling end are in the cooling wall portion, are formed with the cooling water flow path
Part the battery side face.
(6) in this case it is preferable that the heat conduction component have contacted with the battery contact portion (such as
Aftermentioned fixed part 51) and the opposing part opposite with the cooling end (such as aftermentioned movable part 52), the state change structure
Part is bimetallic (such as the aftermentioned bimetallic that the 1st shape or the 2nd shape are deformed into according to the temperature of the heat conduction component
62), the switching device is the bimetallic thermostat for including the bimetallic Yu plunger (such as aftermentioned plunger 63), the column
Plug is retreated according to the bimetallic change in shape, and the switching device is the 1st shape in the bimetallic shape
In the case where, the heat conduction component is set as the non-conductive state and making the opposing part far from the cooling end,
In the case where the bimetallic shape is 2 shape, by make the opposing part close to the cooling end and by institute
It states heat conduction component and is set as the thermally conductive state.
(7) in this case it is preferable that the bimetallic is when more than 1 set temperature, become from the 1st shape
Shape is that the 2nd shape is from the 2nd shape distortion when being lower than 2 set temperature lower than the 1st set temperature
1st shape, the 1st set temperature are set at the Near The Upper Limit of the suitable temperature range of the battery in charge and discharge, institute
The 2nd set temperature is stated to be set near the lower limit of the suitable temperature range.
[effect of utility model]
(1) battery module of the utility model includes: framework, is cooled down by refrigerant；Heat conduction component, be located at by
It is contained between the battery of the framework, the cooling end of the component contacted with a part as framework or with framework；And it cuts
Changing device has the state change component of the temperature according to battery and variable condition, according to the state of the state change component,
Switch heat conduction component between thermally conductive state and non-conductive state.Herein, under thermally conductive state, heat conduction component is close
The state of cooling end and battery.Thus, in the utility model, when requiring the high temperature of battery cooling, heat conduction component passes through
Switching device and be switched to thermally conductive state, therefore the heat of battery is radiated via heat conduction component to cooling end, therefore can be had
Efficient cool down battery.
On the other hand, under non-conductive state, heat conduction component is far from at least either in cooling end and battery.Cause
And in the utility model, in the low temperature for requiring battery to heat, heat conduction component is switched to non-conductive shape by switching device
State, therefore being blocked via the heat conduction path of heat conduction component from battery towards cooling end.As described above, the utility model
In, it is blocked via the heat conduction path of heat conduction component, therefore in the low temperature for requiring battery to heat, by using heating
Device can efficiently heat battery.
(2) in the battery module of the utility model, setting for the setting battery in cooling framework is being carried out by refrigerant
It sets between portion and battery, the low heat insulating component of setting thermal conductivity ratio heat conduction component.As a result, in the low temperature for requiring battery to heat
When, as described above, being hindered by switching device from battery towards the thermally conductive pathways of the heat via heat conduction component of cooling end
Disconnected, in turn, by the heat insulating component, the heat conduction path via setting unit from battery towards framework is also blocked.In this way,
In the utility model, via the heat conduction path of heat conduction component and via both heat conduction paths of battery setting unit quilt
It blocks, therefore in the low temperature for requiring battery to heat, by using heater, can efficiently heat battery.
(3) in the battery module of the utility model, heater is set to compared with cooling end close to the position of battery.That is, this reality
In novel, it heater is utilized to directly heat battery.Thus, according to the utility model, no matter heat conduction component is thermally conductive shape
State or non-conductive state can heater be utilized to heating battery.
(4) in the battery module of the utility model, become according to the component contacted with battery or the state contacted with battery
Change the state of component to switch thermally conductive state and non-conductive state.As a result, in the utility model, can according to the temperature of battery come
So that the state of state change component is changed, therefore, can make heat conduction component between thermally conductive state and non-conductive state
Switching, so that the temperature convergence of battery is in the ideal range.
(5) in the battery module of the utility model, cooling wall portion is set in framework, cooling wall portion shape inside it
At the cooling water flow path for thering is Cooling Water to circulate, by the battery side of the part of cooling water flow path formed in the cooling wall portion
Face be set as cooling end.It therefore, there is no need to the piping or cooling end in the inside of framework setting cooling water.Therefore, according to this reality
With novel, the volume of framework can be reduced and efficiently heat or cool down battery.
(6) in the battery module of the utility model, as heat conduction component, using have the contact portion that contact with battery with
The opposing part person opposite with cooling end；As state change component, the 1st shape is deformed into using the temperature according to heat conduction component
The bimetallic of shape or the 2nd shape；As switching device, using having the bimetallic and retreated according to bimetallic deformation
The bimetallic thermostat of plunger.Moreover, the switching device makes opposing part in the case where bimetallic shape is 1 shape
Far from cooling end, heat conduction component is thus set as non-conductive state, in the case where bimetallic shape is 2 shape,
Make opposing part close to cooling end, heat conduction component is thus set as thermally conductive state.As a result, according to the utility model, without making
With generation with the temperature sensor (sensor) of the detection signal of the temperature respective level (level) of battery or based on described
The detection signal of temperature sensor is come the electromagnetic actuators that switch heat conduction component between thermally conductive state and non-conductive state
(actuator) and its control device etc., can be in due course (timing) lead heat conduction component with non-in thermally conductive state
Switch between Warm status.
(7) in the battery module of the utility model, as bimetallic, person as described below is used, that is, when more than the 1st setting
When temperature, it is the 2nd shape from the 1st shape distortion, thus makes opposing part close to cooling end；When being lower than 2 set temperature, from
2nd shape distortion is the 1st shape, thus makes opposing part far from cooling end；1st set temperature is set at the electricity in charge and discharge
The Near The Upper Limit of the suitable temperature range in pond；2nd set temperature is set near the lower limit of suitable temperature range.Therefore, practical according to this
It is novel, when the temperature of battery and the heat conduction component being in contact with it is more than the 1st setting for the Near The Upper Limit of the suitable temperature range of battery
When determining temperature, opposing part is close to cooling end, therefore battery is cooled down by cooling end, and temperature switchs to decline.Then, work as battery
And the temperature of heat conduction component lower than 2 set temperature near the lower limit of suitable temperature range when, opposing part far from cooling end, because
This promotes the heating of battery, and temperature switchs to rise.Thus, according to the utility model, as described above, temperature sensing need not be used
Device, electromagnetic actuators and its control device just can maintain the temperature of battery in suitable temperature range.
Detailed description of the invention
Fig. 1 is the figure for indicating the structure of the battery module of an embodiment of the utility model.
Fig. 2 is the figure for indicating the structure of battery module of present embodiment.
Fig. 3 is the figure for indicating the functioning example of battery module of present embodiment.
Fig. 4 is the figure for indicating the functioning example of battery module of variation.
The explanation of symbol
1: battery module
2: battery pack (battery)
3: electric heater (heater)
31: heating surface (heating part)
4: heat insulating component
5: heat conduction component
51: fixed part (contact portion)
52: movable part (opposing part)
6: bimetallic thermostat (switching device)
62: bimetallic (state change component)
63: plunger
7: radiator (framework)
72: bottom plate (setting unit)
73: left side wall (cooling wall portion)
75: cooling water flow path
75a: cooling water (refrigerant)
76: cooling surface (cooling end)
Specific embodiment
Hereinafter, being explained with reference to an embodiment of the utility model.
Fig. 1 and Fig. 2 is the figure for indicating the structure of battery module 1 of present embodiment.Battery module 1 is equipped on it
Carry out drive motor as power supply and in the electric vehicle (not shown) that travels.In addition, Fig. 1 shows aftermentioned heat conduction components 5 to be
The case where thermally conductive state, Fig. 2 indicate the case where heat conduction component is non-conductive state.
Battery module 1 includes: the battery pack 2 for the cubic that multiple single cell units are laminated and constitute, has to electricity
The electric heater 3 of the function that pond group 2 is heated, heat insulating component 4, heat conduction component 5, with the temperature according to battery pack 2 and
The bimetallic thermostat 6 of the bimetallic 62 of variable condition and radiator 7 as framework.The radiator 7 accommodates these electricity
Pond group 2, electric heater 3, heat insulating component 4, heat conduction component 5 and bimetallic thermostat 6.In addition, in Fig. 1 indicate along relative to
The stacking direction of battery pack 2 and vertical section carry out the figure of a part of sectility battery module 1.
Radiator 7 is the groove body of the substantially cubic more slightly larger than battery pack 2, and at least part of it passes through cooling water 75a
It is cooled down.Radiator 7 includes the bottom plate 72 that battery pack 2 is arranged, the plate in the left and right sides portion for standing up battery pack 2
Left side wall 73 and right side wall portions 74 and cover (not shown).These bottom plates 72, left side wall 73 and right side wall portions 74
Such as use aluminium metal.
Cooling water flow path 75 is formed in the inside of left side wall 73.In the cooling water flow path 75, have by not scheming
The cooling system that shows and circulate through cooling and force feed cooling water 75a.Therefore, in left side wall 73 throughout there is cooling water flow
The inner wall of 2 side of battery pack of the part on road 75, which becomes, is carried out cooling cooling surface 76 by cooling water 75a.Moreover, left side wall
Cooling effect than cooling surface 76 smaller non-cold of the inner wall of the part of separate cooling water flow path 75 in 73 as cooling water 75a
But face 77.In addition, it is different from left side wall 73, cooling water flow path is not formed in the inside of right side wall portions 74.Therefore, right side wall
Portion 74 is maintained the temperature higher than left side wall 73.
Heat insulating component 4 is sheet material (sheet) shape, is layed in the bottom plate 72 of setting battery pack 2 and heat conduction component 5.
That is, being equipped with heat insulating component 4 between the bottom plate 72 of battery pack 2 and heat conduction component 5 and radiator 7.Heat insulating component 4 uses heat
More specifically the conductivity material lower than radiator 7 or aftermentioned heat conduction component 5 uses carbamate
(urethane) or the heat-insulated material of the resins such as cellulose (cellulose) or glass wool (glass wool) or asbestos
Material known to heat-insulated materials of anti-flammabilitys such as (rock wool) etc..
Relatively left side wall 73 in radiator 7 close to the position of right side wall portions 74, battery pack 2 via heat insulating component 4 and
It is set on bottom plate 72.
Electric heater 3 is plate, and is set between the right side and right side wall portions 74 of battery pack 2.Electric heater 3 be with not
The boosting battery of diagram connects, and generates heat when heater current supply from the boosting battery flows, to the heating surface
31 opposite battery packs 2 are heated.As shown in Figure 1, the heating surface 31 of electric heater 3 is to be located at relatively to be formed in left side wall 73
Cooling surface 76 close to the position of battery pack 2.Therefore, battery module 1 becomes direct heating type as described below, that is, utilizes electricity
The heat generated in the heating surface of heater 3 heats battery pack 2 and surrounding air, with directly to battery pack 2 into
Row heating.In addition, for the electric heater 3, it is preferable to use so-called ptc heater, the ptc heater have following spies
Property, that is, its temperature is higher, then internal resistance is bigger, and heater current is more difficult to flow.
Heat conduction component 5 is formed by the high material of thermal conductivity ratio heat insulating component 4, is that can make battery pack 2 and conduct
The component of hot transmitting is carried out between the cooling surface 76 of a part of left side wall 73.Heat conduction component 5 is plate, curved in section view
In the state that song is at U-shaped, between the left side and left side wall 73 of the battery pack 2 in radiator 7.
Heat conduction component 5 includes: the fixed part 51 of plate, in the left side of battery pack 2, is extended along its stacking direction；
The movable part 52 of plate extends in left side wall 73 along cooling surface 76；And interconnecting piece 53, connect these fixed parts 51 with
Movable part 52.These fixed parts 51, movable part 52 with interconnecting piece 53 are formed by metals such as identical material such as aluminium, because
This, respective temperature is roughly equal because of heat transfer.
Fixed part 51 is fixed on battery pack 2 by the fastening members such as screw or bolt or bonding agent etc., with battery
The left side of group 2 contacts always.Therefore, between heat conduction component 5 and battery pack 2, heat exchange can be carried out always.
Movable part 52 is provided at the position opposite with cooling surface 76 of left side wall 73.Movable part 52 and interconnecting piece 53 via
Hinge (hinge) (not shown) and link.Thus, heat conduction component 5 can be in the close cooling of movable part 52 as shown in Figure 1
The thermally conductive state and movable part as shown in Figure 2 52 in face 76 are far between the two states of the non-conductive state of cooling surface 76 turns
Become.Under thermally conductive state, compared with non-conductive state, movable part 52 in heat conduction component 5 and is cooled down closer to cooling surface 76
Between face 76, it is able to carry out heat exchange more efficient than non-conductive state.In addition, under thermally conductive state, both can as shown in Figure 1,
Movable part 52 and cooling surface 76 are separated to the degree that can carry out heat exchange between heat conduction component 5 and cooling surface 76, movably
Portion 52 also can contact to cooling surface 76.
Bimetallic thermostat 6 includes: heated parts 61, is contacted to the predetermined portion of heat conduction component 5；Bimetallic 62, contact
To the heated parts 61；And plunger 63, it is retreated according to the change in shape of bimetallic 62.Bimetallic thermostat 6 is, for example, to set
Between the front end of the movable part 52 of heat conduction component 5 and the non-cooled face 77 of left side wall 73.
Bimetallic 62 is curved discoid when being section view, is the two or more metal or alloy that thermal expansion coefficient is different
It is engaged and is constituted.Therefore, bimetallic 62 makes its shape change according to the temperature of itself.Heated parts 61 be it is rodlike,
One end is connected to the movable part 52 of heat conduction component 5, and another side is connected to the face of 5 side of heat conduction component of bimetallic 62
Central portion.In this way, bimetallic 62 is contacted via heated parts 61 and heat conduction component 5 to battery pack 2, thus its temperature according to
The temperature of battery pack 2 and change.Moreover, the face of 77 side of non-cooled face in the peripheral part of bimetallic 62 is connected via plunger 63
In non-cooled face 77.Heated parts 61 are formed by the high material of thermal conductivity ratio plunger 63.Therefore, bimetallic 62 can be more non-
Cooling surface 77 and heat exchange more efficiently is carried out between heat conduction component 5.Thus, the temperature and heat transfer structure of bimetallic 62
Part 5 and battery pack 2 are roughly equal.
Bimetallic 62 relative to non-cooled face 77 is concavity when section view when its temperature is more than defined 1 set temperature,
As its central portion close to the 2nd shape (referring to Fig.1) in non-cooled face 77.Plunger 63 is kept out of the way towards 61 side of heated parts as a result,.And
And bimetallic 62 is when at a temperature below 2 set temperature lower than the 1st set temperature, relative to non-cooled face 77 when section view
For convex, become 1st shape of its central portion far from non-cooled face 77 (referring to Fig. 2).Plunger 63 is towards non-cooled face 77 as a result,
Advance side.
For bimetallic 62 when becoming 2 shape, central portion is close to non-cooled face 77.Therefore, via heated parts 61 and with
Close to cooling surface 76 due to the change in shape of bimetallic 62, heat conduction component 5 becomes the movable part 52 that the bimetallic 62 connects
Thermally conductive state (referring to Fig.1).
Moreover, bimetallic 62 is when becoming 1 shape, central portion is far from non-cooled face 77.Therefore, via heated parts 61
And the movable part 52 being connect with the bimetallic 62 separate cooling surface 76 due to the change in shape of bimetallic 62, heat conduction component 5
As non-conductive state (referring to Fig. 2).
As described above, bimetallic thermostat 6 makes the heat according to the temperature for the heat conduction component 5 for being connected to heated parts 61
Conductive members 5 switch between thermally conductive state and non-conductive state.Herein, the material of bimetallic 62 or plate thickness are using following institute
The person of stating, that is, the 1st set temperature is set in the lower limit of the suitable temperature range (such as 25 DEG C~35 DEG C) than the battery pack in charge and discharge
(such as 25 DEG C) high temperature, the 2nd set temperature are set in the temperature lower than the 1st set temperature.
Fig. 3 is the figure for indicating the functioning example of battery module 1.More specifically, it after so that vehicle is stopped at cold district, utilizes
The functioning example of battery module 1 when external charger is come the case where charging to battery pack 2.In Fig. 1, horizontal axis is indicated as electricity
The battery temperature [DEG C] of the temperature of pond group 2；The longitudinal axis indicates the cooling water temperature [DEG C] of the temperature as cooling water.In Fig. 3, indicate
The state of the battery module 1 determined by battery temperature and the two parameters (parameter) of cooling water temperature changes.
In Fig. 3, it is that upper side becomes the cooling water temperature region higher than battery temperature compared with dotted line 3a, is lower section compared with dotted line 3a
Side becomes the battery temperature region higher than cooling water temperature.Moreover, in Fig. 3, dotted line 3b indicate to can be used range the upper limit (such as
60 DEG C), the usable range is that the temperature range of charge and discharge can be carried out in battery pack 2, can be made described in dotted line 3c expression
With the lower limit (such as -30 DEG C) of range.
Moreover, some chain line 3d indicate the upper limit (such as 35 DEG C) of the suitable temperature range of battery pack 2, some chain line 3e in Fig. 3
Indicate the lower limit (such as 25 DEG C) of the suitable temperature range of battery pack 2.Thus, in Fig. 3, compared with some chain line 3d be high temperature side be require electricity
It is the region for requiring the heating of battery pack 2 that the region of the cooling of pond group 2, which is low temperature side compared with some chain line 3e,.
Moreover, two o'clock chain line 3f indicates the 1st set temperature of bimetallic thermostat 6 in Fig. 3, two o'clock chain line 3g indicates double
2nd set temperature of Metal constant temperature device 6.Moreover, two o'clock chain line 3h indicates the operating temperature that electric heater 3 is generated heat in Fig. 3.
In Fig. 3, the power switch (power of the vehicle of battery-mounted module 1 in the state of with shown in P1 is indicated
Switch) it is set as the case where closing (off).At state P1, according to the temperature of battery pack 2 feelings higher than the 1st set temperature
Condition, heat conduction component 5 become thermally conductive state shown in FIG. 1.
Firstly, at state P1, when power switch is set as closing, the temperature of the cooling water of battery pack 2 and radiator 7
Degree declines because of ambient atmos, and battery temperature becomes (referring to state P2) equal with cooling water temperature.At state P2, heat transfer
Component 5 is thermally conductive state.Therefore, battery temperature is declined with the speed equal with cooling water temperature.
Then, at state P3, the case where dropping to 2 set temperature according to battery temperature, heat conduction component 5 is from thermally conductive
State is switched to non-conductive state.The hot path between battery pack 2 and cooling surface 76 is blocked as a result, therefore, battery temperature
Decrease speed becomes slower than the decrease speed of cooling water temperature.
Then, at state P4, the case where operating temperature of electric heater 3 is dropped to according to battery temperature, heater electricity
Stream begins to flow to electric heater 3.Then, electric heater 3 generates heat, and battery temperature rises as a result, and battery module 1 turns from state P4
Become state P5.At this point, heat conduction component 5 becomes non-conductive state, therefore the hot path quilt between battery pack 2 and cooling surface 76
It blocks.Therefore, electric heater 3 only rises battery temperature, and cooling water temperature hardly rises.Moreover, even if by electric heater 3
After closing, since the hot path between battery pack 2 and cooling surface 76 is blocked, the heat insulation effect of battery pack 2 is high.That is, root
According to battery module 1, after cold district makes vehicle parking, heat conduction component 5 is switched to non-conductive state, and battery pack 2 is with few
Energy is kept the temperature, therefore can be realized efficient charging.
Then, shown in the P5 state, according to the power switch of vehicle be opened (on) the case where, battery pack 2
Temperature is begun to ramp up.At this point, heat conduction component 5 become non-conductive state, therefore battery temperature compared with cooling water temperature quickly on
It rises.Then, at state P6, the case where according to battery temperature being more than 1 set temperature, heat conduction component 5 is from non-conductive state
It is switched to thermally conductive state.Therefore, battery temperature on one side decline in a manner of close to cooling water temperature, cooling water temperature on one side on
It rises.Then, at state P7, according to battery temperature be lower than 2 set temperature the case where, heat conduction component 5 is cut from thermally conductive state
It is changed to non-conductive state.As a result, as shown in figure 3, battery temperature is returned to rise.As described above, according to battery module 1, electricity
The temperature of pond group 2 substantially maintains between the 1st set temperature and the 2nd set temperature.
Battery module 1 according to the present embodiment, plays following effect.
(1) battery module 1 includes: radiator 7, is cooled down by cooling water；Heat conduction component 5, is located at and is accommodated in
Between the battery pack 2 and cooling surface 76 of the radiator 7；And bimetallic thermostat 6, with shape according to the temperature of battery pack 2
The bimetallic 62 spent and changed makes heat conduction component 5 in thermally conductive state and non-conductive state according to the shape of the bimetallic 62
Between switch.Herein, under thermally conductive state, heat conduction component is the state close to cooling surface 76 and battery pack 2.Thus, electricity
In pond module 1, when requiring the high temperature of the cooling of battery pack 2, heat conduction component 5 is switched to thermally conductive by bimetallic thermostat 6
State, therefore the heat of battery pack 2 is radiated via heat conduction component 5 to cooling surface 76, therefore can efficiently cool down battery
Group 2.
On the other hand, under non-conductive state, heat conduction component 5 is far from least appointing in cooling surface 76 and battery pack 2
One.Thus, in battery module 1, in the low temperature for requiring battery pack 2 to heat, heat conduction component 5 passes through bimetallic thermostat 6
And it is switched to non-conductive state, therefore the heat conduction path via heat conduction component 5 from battery pack 2 towards cooling surface 76 is hindered
It is disconnected.As described above, being blocked in battery module 1 via the heat conduction path of heat conduction component 5, therefore battery pack 2 is being required to add
When the low temperature of temperature, by using electric heater 3, battery pack 2 can be efficiently heated.
(2) in battery module 1, bottom plate 72 that the setting battery pack 2 in cooling radiator 7 is carried out by cooling water with
Between battery pack 2, the low heat insulating component 4 of setting thermal conductivity ratio heat conduction component 5.Requiring the low of the heating of battery pack 2 as a result,
Wen Shi, as described above, by bimetallic thermostat 6, from battery pack 2 towards the heat via heat conduction component 5 of cooling surface 76
Thermally conductive pathways are blocked, in turn, by the heat insulating component 4, from the passing via the heat of bottom plate 72 towards radiator 7 of battery pack 2
Guiding path is also blocked.In this way, in battery module 1, via the heat conduction path of heat conduction component 5 and via the bottom of battery pack 2
Both heat conduction paths of plate 72 are blocked, therefore in the low temperature for requiring battery pack 2 to heat, by using electric heater 3,
Battery pack 2 can efficiently be heated.
(3) in battery module 1, electric heater 3 is set to compared with cooling surface 76 close to the position of battery pack 2.That is, battery module
In 1, battery pack 2 is directly heated using electric heater 3.Thus, according to battery module 1, no matter heat conduction component 5 is thermally conductive shape
State or non-conductive state can heat battery pack 2 using electric heater 3.
(4) it in battery module 1, contacts according to via heated parts 61 and heat conduction component 5 to the bimetallic of battery pack 2
62 shape switches thermally conductive state and non-conductive state.As a result, in battery module 1, heat conduction component 5 can be made in thermally conductive shape
Switch between state and non-conductive state, so that the temperature convergence of battery pack 2 is in the preferred range.
(5) in battery module 1, left side wall 73 is set in radiator 7, the left side wall 73 has been formed in the interior thereof
The cooling water flow path 75 of Cooling Water circulation, by the battery of the part of cooling water flow path 75 formed in the left side wall 73
The face of 2 sides of group is set as cooling surface 76.It therefore, there is no need to the piping or cooling surface in the inside of radiator 7 setting cooling water.Cause
This can reduce the volume of radiator 7 and efficiently heat or cool down battery pack 2 according to battery module 1.
(6) in battery module 1, as heat conduction component 5, using have the fixed part 51 contacted with battery pack 2 and with it is cold
But the opposite movable part in face 76, as switching device, using bimetallic thermostat 6, the bimetallic thermostat has root
The bimetallic 62 of the 1st shape or the 2nd shape is deformed into according to the temperature of heat conduction component 5 and according to the deformation of bimetallic 62 and
The plunger 63 of advance and retreat.Moreover, the bimetallic thermostat 6 makes movable part in the case where the shape of bimetallic 62 is 1 shape
Heat conduction component 5 far from cooling surface 76, is thus set as non-conductive state by 52, is the 2nd shape in the shape of bimetallic 62
In the case of, make movable part 52 close to cooling surface 76, heat conduction component 5 is thus set as thermally conductive state.
In addition, as the state change component for making state change according to the temperature of battery pack 2, in addition to making as described above
Other than the case where bimetallic 62, the temperature for being also able to use the corresponding detection signal of temperature of generation and battery pack 2 is passed
Sensor.But in this case it is desirable to using the power supply for supplying electric power to temperature sensor or it is based on temperature sensing
The detection signal of device is come the electromagnetic actuators for switching heat conduction component 5 between thermally conductive state and non-conductive state and its control
Device etc..In contrast, in the utility model, by using bimetallic 62 as state change component, without using big rule
The device of mould, just can be in due course switches heat conduction component 5 between thermally conductive state and non-conductive state.
Next, being illustrated to the variation of the battery module of present embodiment.It is described in the battery module of variation
Battery module 1 and the 1st set temperature and the 2nd set temperature it is of different sizes.More specifically, the bimetal thermostatic in variation
1st set temperature of device is set at Near The Upper Limit (such as in the range of ± 1 DEG C of 35 DEG C of the ceiling temperature of suitable temperature range), the
2 set temperatures are set at the lower limit of the suitable temperature range (such as ± 1 DEG C of model of 25 DEG C of the lower limit temperature of suitable temperature range nearby
In enclosing).
Fig. 4 is the figure for indicating the functioning example of the variation of battery module of the embodiment.In Fig. 4, dotted line 3a, void
The meaning point of line 3b, dotted line 3c, some chain line 3d, some chain line 3e and two o'clock chain line 3f, two o'clock chain line 3g, two o'clock chain line 3h
Not identical as Fig. 3, and the description is omitted.Moreover, the transformation between state P1, P2, P4, P5 is roughly the same with Fig. 3, therefore omit
It is described in detail.
The state shown in the P5, the case where being opened according to the power switch of vehicle, on the temperature of battery pack 2 starts
It rises.At this point, heat conduction component 5 becomes non-conductive state, therefore battery temperature quickly rises compared with cooling water temperature.Then, exist
Under state P6, according to battery temperature be more than 1 set temperature the case where, heat conduction component 5 is switched to thermally conductive from non-conductive state
State.Therefore, battery temperature declines in a manner of close to cooling water temperature on one side, and cooling water temperature rises on one side.Then, in shape
Under state P7, according to battery temperature be lower than 2 set temperature the case where, heat conduction component 5 is switched to non-conductive shape by thermally conductive state
State.As a result, as shown in figure 4, battery temperature is returned to rise.As described above, the temperature of battery pack 2 is big according to battery module 1
Cause maintains between the 1st set temperature and the 2nd set temperature.Herein, the 1st set temperature is set at the thermophilic model of battery pack 2
The Near The Upper Limit enclosed, moreover, near the lower limit for the suitable temperature range that the 2nd set temperature is set at battery pack 2.Thus, according to change
The battery module of shape example, the temperature of battery pack 2 maintain in the suitable temperature range.
According to the battery module of variation, following effect is played.
(7) in battery module, as bimetallic, person as described below is used, that is, when more than 1 set temperature, from the 1st
Shape distortion is the 2nd shape, thus makes movable part close to cooling surface, when being lower than 2 set temperature, from the 2nd shape distortion
For the 1st shape, thus make movable part far from cooling surface, the 1st set temperature is set at the thermophilic model of the battery in charge and discharge
The Near The Upper Limit enclosed, the 2nd set temperature are set near the lower limit of suitable temperature range.Therefore, according to battery module, work as battery pack
And the temperature for the heat conduction component being in contact with it be more than battery pack suitable temperature range Near The Upper Limit 1 set temperature when,
Movable part is close to cooling surface, therefore battery pack is cooled down by cooling surface, and temperature switchs to decline.Then, when battery pack and
When the temperature of heat conduction component is lower than 2 set temperature near the lower limit of suitable temperature range, movable part promotees far from cooling surface
Into the heating of battery pack, temperature switchs to rise.Thus, according to battery module, as described above, need not use temperature sensor,
Electromagnetic actuators and its control device just can maintain the temperature of battery pack in suitable temperature range.
More than, an embodiment of the utility model is illustrated, but the utility model is not limited to this.
For example, in the embodiment, to bimetallic thermostat 6 is used as make heat conduction component 5 in thermally conductive state
The case where switching device switched between non-conductive state, is illustrated, but the utility model is not limited to this.For cutting
Changing device as long as having the state change component of the temperature according to battery pack 2 and variable condition, and has and is become according to the state
Change the state of component come the function of switching heat conduction component 5 between thermally conductive state and non-conductive state, is then cut using any
Changing device all may be used.
For example, following situations are illustrated in the embodiment, that is, by the heated parts 61 of bimetallic thermostat 6
It is connected to the movable part 52 of heat conduction component 5, makes bimetallic 62 according to the temperature of heat conduction component 5 to deform, the heat transfer
Component 5 is the component contacted with battery pack 2 and its temperature and the temperature of battery pack 2 there are related, but the utility model and unlimited
In this.For example, the contact of heated parts 61 can also be made to battery pack 2, thus become bimetallic 62 according to the temperature of battery pack 2
Shape.In the case, it can be improved responsiveness of the bimetallic 62 relative to the temperature change of battery pack 2 sometimes.
Moreover, in the embodiment, to contacting the heated parts 61 of bimetallic thermostat 6 to contacting with battery pack 2
The case where heat conduction component 5, is illustrated, but the utility model is not limited to this.Such as in cold start-up, the temperature of battery pack 2
The temperature of degree and its radiator 7 of receiving or cooling water 75a is roughly equal, accordingly, it can be said that radiator 7 or cooling water 75a
Also there are related to battery pack 2 for temperature.Thus, the contact of heated parts 61 can also be made to radiator 7 or cooling water 75a sometimes.Moreover,
In the case where heating cooling water 75a using electric heater 3, it may be said that the temperature of the cooling water 75a also temperature with battery pack 2
Degree exists related.Thus, in the case, the contact of heated parts 61 can also be made to cooling water 75a sometimes.
Moreover, following situations are illustrated in the embodiment, that is, the heating surface 31 of electric heater 3 to be set to
Compared with left side wall 73 cooling water flow path 75 close to the position of battery pack 2, and be set as direct heating type, but the utility model is not
It is limited to this.Electric heater 3 for example may be alternatively provided at compared with battery pack 2 close to the position of cooling water flow path 75 such as cooling water flow path 75
It is interior.That is, the heat that generates in the heating surface of electric heater 3 can also be used to heat cooling water 75a, it is set as heating indirectly as a result,
The cooling water heating type of battery pack 2.
Claims (7)
1. a kind of battery module comprising:
Battery；
Framework accommodates the battery, and is cooled down by refrigerant；And
Cooling end is a part of the framework or is contacted to the component of the framework,
The battery module is characterized in that
Heat conduction component is set between the battery and the cooling end；And
Switching device has according to the temperature of the battery and the state change component of variable condition, according to the state change
The state of component switches between thermally conductive state and non-conductive state, and the thermally conductive state is the heat conduction component close to institute
The state of cooling end and the battery is stated, the non-conductive state is the heat conduction component far from the cooling end and institute
State the state of at least either in battery.
2. battery module according to claim 1, it is characterised in that further include:
Heat insulating component, being arranged between the setting unit of the battery in the battery and the framework, and pyroconductivity is low
In the heat conduction component.
3. battery module according to claim 1 or 2, it is characterised in that further include:
Heater, set on the inside of the framework,
The heater is provided at the cooling end close to the position of the battery.
4. battery module according to claim 1 or 2, which is characterized in that
The state change component is contacted to the component or the battery contacted with the battery.
5. battery module according to claim 1 or 2, which is characterized in that
The framework includes cooling wall portion, and portion is formed with the cold of the cooling water circulation for being provided as refrigerant including the cooling wall portion
But water flow road,
The cooling end is the face that the battery side of part of the cooling water flow path is formed in the cooling wall portion.
6. battery module according to claim 1 or 2, which is characterized in that
The heat conduction component has the contact portion and the opposing part opposite with the cooling end contacted with the battery,
The state change component is to be deformed into double gold of the 1st shape or the 2nd shape according to the temperature of the heat conduction component
Belong to,
The switching device is the bimetallic thermostat for including the bimetallic and plunger, and the plunger is according to described bimetallic
Change in shape and retreat,
The switching device is in the case where the bimetallic shape is 1 shape, by keeping the opposing part separate
The cooling end and the heat conduction component is set as the non-conductive state, the bimetallic shape be the 2nd shape
In the case where shape, the heat conduction component is set as the thermally conductive state and making the opposing part close to the cooling end.
7. battery module according to claim 6, which is characterized in that
The bimetallic is the 2nd shape from the 1st shape distortion, lower than than described when more than 1 set temperature
It is the 1st shape from the 2nd shape distortion when low 2 set temperature of the 1st set temperature,
1st set temperature is set at the Near The Upper Limit of the suitable temperature range of the battery in charge and discharge,
2nd set temperature is set near the lower limit of the suitable temperature range.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018041643A JP7025246B2 (en) | 2018-03-08 | 2018-03-08 | Battery module |
| JP2018-041643 | 2018-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209374628U true CN209374628U (en) | 2019-09-10 |
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|---|---|---|---|
| CN201920259893.XU Active CN209374628U (en) | 2018-03-08 | 2019-03-01 | Battery module |
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|---|---|
| JP (1) | JP7025246B2 (en) |
| CN (1) | CN209374628U (en) |
Families Citing this family (2)
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|---|---|---|---|---|
| US20220332912A1 (en) * | 2019-09-30 | 2022-10-20 | Asahi Kasei Kabushiki Kaisha | Container, accommodation device, and electrical component-accommodating body |
| WO2023227993A1 (en) * | 2022-05-27 | 2023-11-30 | 株式会社半導体エネルギー研究所 | Battery pack and vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05283102A (en) * | 1992-03-30 | 1993-10-29 | Ngk Insulators Ltd | Heat radiator for battery system |
| JP2004111370A (en) * | 2002-08-29 | 2004-04-08 | Matsushita Electric Ind Co Ltd | Thermal control apparatus of battery |
| CN104040778B (en) * | 2012-01-24 | 2016-08-31 | 日本碍子株式会社 | Power storage devices and the operation method of power storage devices |
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2018
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| JP2019160442A (en) | 2019-09-19 |
| JP7025246B2 (en) | 2022-02-24 |
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