CN209691814U - Explosion-resistant enclosure and energy storage device for energy storage device - Google Patents
Explosion-resistant enclosure and energy storage device for energy storage device Download PDFInfo
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- CN209691814U CN209691814U CN201920441653.1U CN201920441653U CN209691814U CN 209691814 U CN209691814 U CN 209691814U CN 201920441653 U CN201920441653 U CN 201920441653U CN 209691814 U CN209691814 U CN 209691814U
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- pressure release
- explosion
- release portion
- enclosure body
- enclosure
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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 explosion-resistant enclosures and energy storage device for energy storage device.The explosion-resistant enclosure includes: enclosure body, and the enclosure body has through-hole；And explosion-proof component, the explosion-proof component include central part and around the central part setting pressure release portion, the pressure release portion is in a ring, the pressure release portion be arranged in the through-hole and formed with the through-hole be tightly connected the pressure release portion be configured as when the pressure in the enclosure body reaches the first setting value can in response to the enclosure body deformation and crack and generate between the pressure release portion and the enclosure body crack, and it can fall off from the enclosure body when pressure reaches the second setting value, second setting value is greater than first setting value.
Description
Technical field
The utility model relates to energy conversion technical fields, more particularly, to a kind of for the explosion-proof outer of energy storage device
Shell and energy storage device.
Background technique
Existing most of energy storage devices, including common electrolytic capacitor, one-shot battery, secondary cell such as hard shell lithium from
Sub- battery, nickel-metal hydride battery etc., to avoid internal manufacturing defect or user from abusing in the case where internal thermal runaway cause internal pressure to increase
It explodes, is provided with explosion-proof relief mechanism generally to ensure these energy storage devices in the long-term use or thermal runaway
Pressure release can be carried out in time when air pressure inside excess rises in the process, to protect personal and property safety.
Common explosion-proof relief structure includes following two categories:
(1) diaphragm type explosion-proof relief structure
The general lower material of limit of utilization intensity of the pressure relief, while material thickness be thinned and forms diaphragm,
By diaphragm, when internal pressure increases, deformation occurs, deformation to a certain extent when voluntarily or by piercing mechanism form explosion to reaching
To the purpose of pressure release, since the generally more soft and thick degree of these diaphragm materials is relatively thin, to prevent accidental injury from energy storage device being caused to lose
Effect, is generally provided with upper and lower covers protection mechanism, clamping or riveting mechanism, and some also contains piercing mechanism.Structure is more complicated,
The more assembly of part is complicated, and the space occupied is also larger in height.
(2) formula explosion-proof relief structure is marked
The pressure relief usually forms cutting on the surface of the housing, is reduced at this by the way that material is thinned at cutting
Intensity, when energy storage device internal pressure is increased to design value, gas is discharged from weaker cutting place, to carry out pressure release.It is this to let out
Requirement of the laminated structure to the machining accuracy of cutting is very high, and is suitable only for the good metal of and ductility lower using hardness and carries out
Cutting processing.For example, aluminium alloy etc..However, the higher carbon steel of hardness, stainless steel or other alloys be then difficult to ensure it is lower quick-fried
Reliable cutting processing is carried out under the premise of broken pressure.And due at cutting intensity it is weaker, often make or use
In the process to the accidental damage of explosion-proof valve to cause energy storage device to fail.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Utility model content
One purpose of the utility model is to provide a kind of new solution of explosion-resistant enclosure for energy storage device.
It is according to the present utility model in a first aspect, providing a kind of explosion-resistant enclosure for energy storage device.The explosion-resistant enclosure
It include: enclosure body, the enclosure body has through-hole；And explosion-proof component, the explosion-proof component include central part and surround
The pressure release portion of central part setting, the pressure release portion in a ring, the pressure release portion be arranged in the through-hole and with it is described
Through-hole, which is formed, to be tightly connected, and the pressure release portion is configured as to ring when the pressure in the enclosure body reaches the first setting value
The deformation of enclosure body described in Ying Yu and crack and generate crack between the pressure release portion and the enclosure body, and
It can fall off from the enclosure body when pressure reaches the second setting value, second setting value is greater than first setting
Value.
Optionally, the enclosure body and the central part are conductor material, the enclosure body and the central part
Not as two electrodes of energy storage device.
Optionally, defining the size of the pressure release portion radially is width, is height along axial size, the width with
The ratio between described height >=0.5.
Optionally, the pressure release portion is circular ring shape, and defining the pressure release portion along axial size is height, the pressure release portion
Outer ring diameter and height the ratio between >=1.
Optionally, the pressure release portion is rectangular ring, and defining the pressure release portion along axial size is height, the pressure release
The ratio between cornerwise length and height in portion >=1.
Optionally, the pressure release portion is elliptical annular, and defining the pressure release portion along axial size is height, described to let out
The ratio between size and height of the long axis of splenium >=1.
Optionally, the through-hole extends to form cylinder, and the pressure release portion is located in the cylinder.
Optionally, the position connecting with the enclosure body for defining the cylinder is root, in the outside of the root
Form outer chamfer.
Optionally, the position connecting with enclosure body for defining the cylinder is root, is formed in the inside of the root
Inner chamfer, the pressure release portion are filled in the region that the inner chamfer surrounds.
Optionally, the enclosure body includes the cover board positioned at end, and the through-hole is provided on the cover board.
Optionally, the cover board with a thickness of 0.1mm-1mm.
Optionally, the enclosure body surrounds cavity, wherein the cover board include close to the cavity inner surface and with
The opposite outer surface of the inner surface, the inner surface and the outer surface are plane；The explosion-proof component includes close to described
The lower end surface of cavity and the upper surface opposite with the lower end surface, the lower end surface and the inner surface flush, the upper end
Face and the outer surface flush.
Optionally, defining the size of the pressure release portion radially is width, is height along axial size, and the width is
0.1mm-5mm, the height are 0.2mm-5mm.
Optionally, the central part includes the first end face and second end opposite with the first end face close to cavity
Face is radially extended by the first end face and/or the second end face to form extension, the extension at least partial mulching
The pressure release portion.
Optionally, the surface indentation of the enclosure body is formed with the groove of bar shaped, and the extended line of the groove passes through institute
State explosion-proof component.
Optionally, the groove is a plurality of, and a plurality of groove is in spoke centered on the center of the explosion-proof component
Penetrate shape.
Optionally, the pressure release portion is inorganic non-metallic material.
Optionally, the material in the pressure release portion is glass or ceramics.
Optionally, the enclosure body with the pressure release portion be tightly connected position material be tantalum, niobium, molybdenum, tungsten,
Titanium, platinum, copper, aluminium, carbon steel, kovar alloy or stainless steel.
Optionally, the thermal expansion coefficient of the central part is equal with the thermal expansion coefficient in the pressure release portion, the shell sheet
The thermal expansion coefficient of body is greater than or equal to the thermal expansion coefficient in the pressure release portion.
According to another embodiment of the present disclosure, a kind of energy storage device is provided.The device include energy conversion component and
Above-mentioned explosion-resistant enclosure.
Optionally, the energy storage device is battery or capacitor.
According to one embodiment of the disclosure, when pressure release portion is cracked with crack, the gas in explosion-resistant enclosure passes through
The pressure release passage of crackle and cracking initiation can discharge.When pressure release portion falls off, the gas in explosion-resistant enclosure passes through through-hole
It discharges rapidly.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiments of the present invention, and
And together with its explanation for explaining the principles of the present invention.
Fig. 1 is the cross-sectional view according to a part of the explosion-resistant enclosure of one embodiment of the disclosure.
Fig. 2 is the cross-sectional view according to a part of another explosion-resistant enclosure of one embodiment of the disclosure.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the cross-sectional view according to a part of the third explosion-resistant enclosure of one embodiment of the disclosure.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the cross-sectional view according to a part of the 4th kind of explosion-resistant enclosure of one embodiment of the disclosure.
Fig. 7 is the cross-sectional view according to a part of the 5th kind of explosion-resistant enclosure of one embodiment of the disclosure.
Fig. 8 is the cross-sectional view of energy storage device according to another embodiment of the present disclosure.
Description of symbols:
11: cover board；12: pressure release portion；13: central part；14: groove；21: the first extensions；22: the second extensions；23: energy
Measure conversion element；24: side wall；25: bottom.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, a kind of explosion-resistant enclosure for energy storage device is provided.As shown in Figure 1, should
Explosion-resistant enclosure includes: enclosure body and explosion-proof component.Enclosure body is cylindrical, elliptical cylinder-shape, cuboid etc..Enclosure body
Including being located at top, bottom 25 and the side wall 24 between top and bottom 25.
For example, being provided with cover board 11 at top.Bottom 25 is integrally formed with side wall 24；Or in top and bottom 25
It is provided with cover board 11.Cover board 11 is welded together by laser welding or resistance welding with side wall 24.
Cavity is formed in the inside of enclosure body.Cavity is for accommodating energy conversion component 23.
Through-hole is connected to cavity and exterior space.The shape of through-hole is round, oval, rectangle or other shapes.
Explosion-proof component includes central part 13 and pressure release portion 12 is arranged around central part 13.Pressure release portion 12 in a ring, for example, circle
Annular, rectangular ring, elliptical annular etc..Pressure release portion 12 is arranged in through-hole and is formed with through-hole and is tightly connected.Central part
13 by pressure release portion 12 by sealing-in in through-holes.
For example, through-hole is located on cover board 11 or side wall 24.Through-hole can be one or more.Correspondingly, explosion-proof member
Part is one or more.
Pressure release portion 12 is configured as can be in response to enclosure body when the pressure in enclosure body reaches the first setting value
It deforms and cracks and generate between the pressure release portion 12 and the enclosure body crack, and reach second in pressure and set
It can fall off from enclosure body when definite value.Second setting value is greater than the first setting value.
When pressure release portion 12 is cracked with crack, the gas in explosion-resistant enclosure is logical by the pressure release of crackle and cracking initiation
Road can discharge.When pressure release portion 12 falls off, the gas in explosion-resistant enclosure is discharged rapidly by through-hole.
For example, the lower surface of enclosure body generates bending due to by air pressure when the air pressure inside energy storage device rises
Deformation.Deflection is related to the size of suffered air pressure.The more big then deflection of air pressure is bigger, and the smaller then deflection of air pressure is smaller.This
When, pressure release portion 12 is moved in parallel with central part 13 with the deformation of enclosure body.The deformation allowed due to pressure release portion 12 itself
Very little is measured, therefore generates stress in the junction in enclosure body Yu pressure release portion 12 and concentrates, so that pressure release portion 12- enclosure body
The top half of linkage interface generates radial drawing effect, and the lower half portion of linkage interface generates radial compression effect.
With the increase of air pressure suffered by enclosure body, the deflection of enclosure body is gradually increased, in pressure release portion 12- shell sheet
Radial drawing effect on the linkage interface of body is gradually reinforced.When pressure reaches the first setting value, the stretching of top half is answered
Power is greater than the bonding strength of linkage interface, and linkage interface starts to generate crack；The compression stress of lower half portion is greater than pressure release portion 12
Compressive strength, pressure release portion 12 cracks in itself.After the crack of top half and the crackle of lower half portion are mutually communicated, shape
At pressure release passage.Pressure release portion 12 and the air-tightness of the sealing-in of enclosure body are begun to decline.The high pressure gas of the inside of energy storage device
It is discharged via pressure release passage to outside.
Continue to increase with air pressure suffered by enclosure body, and the crack of the linkage interface of pressure release portion 12- enclosure body and
The crackle in pressure release portion 12 itself continues to increase.When the bonding strength in pressure release portion 12 and enclosure body is not enough to support internal gas
When pressing (i.e. pressure reaches the second setting value), pressure release portion 12 and central part 13 are pushed out under the air pressure.In this way, enclosure body shape
At the channel of Quick air-discharge, to carry out quick pressure releasing, explode to effectively prevent energy storage device.
It falls off together or the local shedding in pressure release portion 12 for example, pressure release portion 12 can be related central part 13.
Those skilled in the art can pass through the thickness of setting enclosure body, the strength of materials of enclosure body, pressure release portion 12
The parameters such as width, height adjust the first setting value and the second setting value, wanted with meeting the pressure release of energy storage device of different model
It asks.
In addition, the structure of explosion-proof component is simple, small in axial the space occupied, the space of saving can be used in increasing energy
The amount of conversion element 23.
In addition, the explosion-resistant enclosure carries out pressure release using the broken limit of material itself, have the characteristics that pressure release is with high accuracy.
In addition, the appearance of the explosion-resistant enclosure is good.
In other examples, it can also be that crackle and crack extend respectively in axial direction, to form pressure release passage.In this way, same
Sample can play the role of pressure release.
In one example, pressure release portion 12 is insulating materials.For example, inorganic non-metallic material.This material has toughness
The characteristics of small, brittleness is big, easily forms crackle, so as to be let out in time when enclosure body internal pressure reaches setting value
Pressure.
In one example, pressure release portion 12 is glass or ceramics.In production, the blank of glass or ceramics is arranged
In through-holes.Central part 13 is in blank.Then blank is subjected to pre-burning, to obtain structural strength, and make pressure release portion 12 with
Through-hole and central part 13, which are formed, is tightly connected (i.e. sealing-in).
For example, when selecting glass material, pressure release portion 12 be devitrified glass, borosilicate glass, phosphate glass or
Other special glasss.Glass can form entity structure, hollow structure or engraved structure, as long as meeting the requirement of pressure release pressure
.
Central part 13 and enclosure body are conductor material.Two respectively as energy storage device of central part 13 and enclosure body
Electrode.For example, central part 13 is connect with the anode of energy conversion component 23.The cathode of enclosure body and energy conversion component 23 connects
It connects.
Alternatively, central part 13 is connect with the cathode of energy conversion component 23, enclosure body and energy conversion component 23 are just
Pole connection.
In one example, defining the size of pressure release portion 12 radially is width, is height along axial size.Width with
The ratio between height >=0.5.Radially as shown in figure 1 shown in x arrow, axially as shown in figure 1 shown in y arrow.Width is as shown in figure 1 shown in w, height
As shown in figure 1 shown in h.
The width the big, and the air pressure that pressure release portion 12 is subject to is bigger, and pressure release pressure (i.e. the first setting value and the second setting value) is more
It is small；Conversely, the smaller then pressure release pressure of width is smaller.The structural strength in the more big then pressure release portion 12 of height is higher, and pressure release pressure is bigger；
Conversely, height is smaller, then pressure release pressure is smaller.In the proportional region, pressure release pressure is moderate.
In one example, definition pressure release portion 12 is height along axial size, and the outer ring in pressure release portion 12 is (as schemed wherein d
It is shown) diameter and height the ratio between >=1.The structural strength in the more big then pressure release portion 12 of the diameter of outer ring is lower, pressure release pressure (i.e.
One setting value and the second setting value) it is smaller；Conversely, the smaller then pressure release pressure of the diameter of outer ring is bigger.The more big then pressure release portion of height
12 structural strength is higher, and the pressure of pressure release is bigger；Conversely, height is smaller, then pressure release pressure is smaller.In the proportional region,
Pressure release pressure is moderate.
In one example, the pressure release portion is rectangular ring, and defining the pressure release portion along axial size is height, institute
State the ratio between cornerwise length and the height in pressure release portion >=1.In the proportional region, pressure release pressure is moderate.
In one example, the pressure release portion is elliptical annular, and defining the pressure release portion along axial size is height,
The ratio between size and height of the long axis in the pressure release portion >=1.In the proportional region, pressure release pressure is moderate.
In one example, as shown in fig. 7, through-hole extends to form cylinder.For example, enclosure body is in through hole along thickness side
Extend to side or two sides, to form cylinder.Cylinder is integrally formed with enclosure body.
Pressure release portion 12 is located in cylinder.Cylinder and the contact area in pressure release portion 12 are bigger, this makes pressure release portion 12 and through-hole
Bonding strength it is higher.In this way, the thickness at other positions of enclosure body can effectively reduce.In the feelings that pressure release pressure is constant
Under condition, enclosure body can be done thinner, comply with energy storage device miniaturization, lightening development trend.
In addition, the thickness of enclosure body is thinning, biggish deformation can produce under lesser internal pressure, this to store up
The pressure release pressure of energy device is smaller, and security performance is more preferable.
Certainly, in other examples, the thickness of enclosure body is enough, then does not need setting cylinder at this time, it is only necessary to will let out
Splenium 12 is filled in through-holes.
The position connecting with enclosure body for defining cylinder is root.When root is closer to right angle, more hold in root
Stress is easily formed to concentrate.The deformation of enclosure body generates biggish stress in root, so that root generates plastic deformation.In this way,
The deformation of enclosure body will not cause the transverse shifting of cylinder, i.e. the deformation of enclosure body can not be transmitted to cylinder, and cylinder will not
Pressure release portion 12 is squeezed or stretched, not will form crack and crackle.The cracking pressure of the explosion-proof component of energy storage device increases.
In order to solve the technical problem, in one example, cylinder forms outer chamfer (R1 in such as Fig. 7 in the outside of root
It is shown).The stress that outer chamfer can be effectively reduced root generation is concentrated, and the deformation of enclosure body is transmitted to rapidly
Cylinder.In this way, the top half of cylinder squeezes pressure release portion 12, lower half portion stretches pressure release portion 12, so that pressure release be more readily formed
Channel.
In addition, intensity is low when the height in pressure release portion 12 is too low, and it is easy to break, for example, can process, transport, use process
In be damaged, thus the effect of losing insulated enclosure.
In one example, cylinder forms inner chamfer in the inside of root (as shown in R2 in Fig. 7).Pressure release portion 12 is filled in
In the region that inner chamfer surrounds.Pressure release portion 12 includes straight section (as shown in b in Fig. 7) and bending section.It is formed between straight section and cylinder
It is effective to be tightly connected.
The effective height in pressure release portion 12, the i.e. size of straight section play a decisive role for pressure release pressure.The length of straight section is bigger
Then pressure release pressure is bigger；Conversely, the smaller then pressure release pressure of the length of straight section is smaller.And the inner chamfer that is located in pressure release portion 12 is surrounded
The effect very little of part (i.e. bending section) in region to pressure release pressure.By the way that inner chamfer is arranged, straight section can be effectively reduced
It is reduced with the effective height of the sealing-in area of cylinder, pressure release portion 12.
In this way, even if the whole height in pressure release portion 12 is that 0.5mm is even more big, the influence due to bending section to pressure release pressure
It is small, therefore can to reach 0.2mm, 0.3mm, 0.4mm even more small for the effective height in pressure release portion 12.This has explosion-proof component more
Low pressure release pressure meets the requirement of small-sized energy storage device, such as aciculiform battery or button cell.
In one example, as shown in figure 8, being provided with through-hole on cover board 11.Through-hole is opened up compared on side wall 24.
Cover board 11 is more smooth, and the difficulty for opening up through-hole is smaller, and the size of through-hole is more accurate.For example, cover board 11 with a thickness of 0.1mm-
1mm.The cover board 11 of the size range is more prone to produce deformation, so that energy storage device is let out under lower pressure release pressure
Pressure, and meet the lightening development trend of energy storage device.
In one example, as shown in Fig. 1,8, cover board 11 includes close to the inner surface of cavity and opposite with inner surface outer
Surface.The inner surface and the outer surface is plane.Explosion-proof component includes close to the lower end surface and the upper surface opposite with lower end surface of cavity.
Lower end surface and inner surface flush, upper surface and outer surface flush.In this example embodiment, the group of cover board 11 and explosion-proof component composition
The generally sheet of part.The exterior space that this structure occupies is small, and the space utilization rate of energy storage device is high.
In one example, the width in pressure release portion 12 is 0.1mm-5mm, and the height in pressure release portion 12 is 0.2mm-5mm.At this
In range, explosion-proof component meets the explosive-proof grade requirement of energy-storage travelling wave tube.
In one example, as Figure 4-Figure 6, central part 13 includes the first end face and and first end face close to cavity
Opposite second end face.It is radially extended by first end face and/or second end face to form extension (for example, the first extension 21
With the second extension 22).Extension at least partial mulching pressure release portion 12.
For example, the material of central part 13 is tantalum, niobium, molybdenum, tungsten, titanium, platinum, copper, aluminium, carbon steel, kovar alloy or stainless steel.
The hardness height of above-mentioned metal makes the structural strength of explosion-resistant enclosure high.Central part 13 forms T-shaped structure or I-shaped structure.
Extension can effectively increase the area of first end face and/or second end face.Due to the increase of area so that central part 13 with
The connection of other vigour parts (for example, tab or PCM) becomes easy.
In addition, energy conversion component 23 is usually connect by tab with central part 13.First extension 21 or second extends
Portion 22 increases the area of the end face of central part 13, so that tab and central part 13 have bigger contact area, allows
Bigger electric current passes through, and meets the requirement of energy storage device high current charge and discharge.
For example, two end faces along axial direction in the first extension 21 and/or the whole covering pressure release portion 12 of the second extension 22.
In this way, the first extension 21 and/or the second extension 22 can play the role of protection to pressure release portion 12.Extension energy
Prevent pressure release portion 12 by the shock of exterior object.
In one example, surface (for example, the inner surface or outer surface) recess of enclosure body is formed with the recessed of bar shaped
Slot 14.Groove 14 is linear type, arc line shaped, wave linear shape or other shapes.The extended line of groove 14 passes through explosion-proof component.
In this example embodiment, it is that axis is deformed that the deformation of enclosure body, which is with groove 14, this makes the deformation of enclosure body
More easily.It can't be broken in the deformation process further groove 14 of enclosure body, not will form gap, but by accelerating shell sheet
The deformation of body, so that the quick formation in the crack between the crackle in pressure release portion 12 and pressure release portion 12 and enclosure body, to drop
The pressure release pressure of low explosion-proof component meets the pressure release requirement of small-sized energy storage device.
In one example, as Figure 2-3, groove 14 is a plurality of, and a plurality of groove 14 is with the center of explosion-proof component
Centered on radially.By the way that a plurality of groove 14 is arranged, the pressure release pressure of explosion-proof component can be reduced more effectively.
For example, as shown in figure 3, groove 14 be two, and pass through explosion-proof component center.In deformation, at groove 14
Structural strength it is low.Enclosure body outwardly protrudes at two grooves 14.The position perpendicular to groove 14 of enclosure body with let out
Deflection between splenium 12 is maximum, pressure release passage easy to form at this, so that internal gas discharges rapidly.
In other examples, groove 14 is for 3,4,5,6 or more a plurality of.
In one example, the thermal expansion coefficient of central part 13 is equal with the thermal expansion coefficient in pressure release portion 12.It can protect in this way
Card central part 13 and pressure release portion 12 are connected firmly, and temperature tolerance is good.Explosion-proof component will not be due to the variation of environment temperature
Generate big deformation.It pressure release portion 12 will not the fragmentation due to expansion of central part 13.
The thermal expansion coefficient of enclosure body is greater than or equal to the thermal expansion coefficient in pressure release portion 12.Pass through the choosing of thermal expansion coefficient
Selecting can guarantee to form good sealing-in between enclosure body and pressure release portion 12.Thermal expansion system in enclosure body Yu pressure release portion 12
When number is equal, the temperature tolerance of the explosion-proof casing is better.
When the thermal expansion coefficient of enclosure body is greater than the thermal expansion coefficient in pressure release portion 12, the sealing strength of explosion-proof casing is more
It is high.This mode is more suitable in the higher energy storage device of pressure release pressure.For example, the material of enclosure body is iron-based expansion conjunction
Gold comprising: the models such as 4J28,4J29.
According to another embodiment of the present disclosure, a kind of energy storage device is provided.As shown in figure 8, the energy storage device includes
Energy conversion component 23 and above-mentioned explosion-resistant enclosure.
Energy storage device is battery or capacitor.For example, battery includes lithium ion battery, Ni-Cr battery, alkaline battery, liquid
Galvanic battery, lead-acid accumulator etc..Capacitor includes organic dielectric capacitor, mineral condenser, electrolytic capacitor, electric heating electricity
Container and air dielectric capacitor etc..The energy storage device has the characteristics that security performance is excellent.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that example above merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (22)
1. a kind of explosion-resistant enclosure for energy storage device, wherein include:
Enclosure body, the enclosure body have through-hole；And
Explosion-proof component, the explosion-proof component include central part and around the central part setting pressure release portion, the pressure release portion is in
Annular, the pressure release portion are arranged in the through-hole and are formed with the through-hole and be tightly connected, and the pressure release portion is configured as
Pressure in the enclosure body when reaching the first setting value can in response to the enclosure body deformation and crack simultaneously
Crack is generated between the pressure release portion and the enclosure body, and can be from the shell when pressure reaches the second setting value
Body ontology falls off, and second setting value is greater than first setting value.
2. explosion-resistant enclosure according to claim 1, wherein the enclosure body and the central part are conductor material, institute
Enclosure body and the central part are stated respectively as two electrodes of energy storage device.
3. explosion-resistant enclosure according to claim 1, wherein defining the size of the pressure release portion radially is width, along axis
To size be height, the ratio between the width and the height >=0.5.
4. explosion-resistant enclosure according to claim 1, wherein the pressure release portion is circular ring shape, defines the pressure release portion along axis
To size be height, the ratio between the diameter of the outer ring in the pressure release portion and height >=1.
5. explosion-resistant enclosure according to claim 1, wherein the pressure release portion is rectangular ring, defines pressure release portion edge
Axial size is height, the ratio between cornerwise length and height in the pressure release portion >=1.
6. explosion-resistant enclosure according to claim 1, wherein the pressure release portion is elliptical annular, defines the pressure release portion
It is height along axial size, the ratio between size and height of the long axis in the pressure release portion >=1.
7. explosion-resistant enclosure according to claim 1, wherein the through-hole extends to form cylinder, and the pressure release portion is located at institute
It states in cylinder.
8. explosion-resistant enclosure according to claim 7, wherein define the position of the cylinder connecting with the enclosure body
For root, outer chamfer is formed in the outside of the root.
9. explosion-resistant enclosure according to claim 7, wherein the position connecting with enclosure body for defining the cylinder is root
Portion forms inner chamfer in the inside of the root, and the pressure release portion is filled in the region that the inner chamfer surrounds.
10. explosion-resistant enclosure according to claim 1, wherein the enclosure body includes the cover board positioned at end, described
The through-hole is provided on cover board.
11. explosion-resistant enclosure according to claim 10, wherein the cover board with a thickness of 0.1mm-1mm.
12. explosion-resistant enclosure according to claim 10, the enclosure body surrounds cavity, wherein the cover board includes leaning on
The inner surface of the nearly cavity and the outer surface opposite with the inner surface, the inner surface and the outer surface are plane；Institute
Stating explosion-proof component includes the lower end surface and the upper surface opposite with the lower end surface close to the cavity, the lower end surface with it is described
Inner surface flush, the upper surface and the outer surface flush.
13. explosion-resistant enclosure according to claim 1, wherein defining the size of the pressure release portion radially is width, along axis
To size be height, the width be 0.1mm-5mm, the height be 0.2mm-5mm.
14. explosion-resistant enclosure described in any one in -12 according to claim 1, wherein the central part includes close to cavity
First end face and second end face opposite with the first end face, by the first end face and/or the second end face diameter
To extension to form extension, pressure release portion described in the extension at least partial mulching.
15. explosion-resistant enclosure described in any one in -12 according to claim 1, wherein the surface indentation of the enclosure body
It is formed with the groove of bar shaped, the extended line of the groove passes through the explosion-proof component.
16. explosion-resistant enclosure according to claim 15, wherein the groove is a plurality of, and a plurality of groove is with institute
It states centered on the center of explosion-proof component radially.
17. explosion-resistant enclosure described in any one in -12 according to claim 1, wherein the pressure release portion is inorganic non-metallic
Material.
18. explosion-resistant enclosure described in any one in -12 according to claim 1, wherein the material in the pressure release portion is glass
Or ceramics.
19. explosion-resistant enclosure according to claim 2, wherein the enclosure body with the pressure release portion be tightly connected
The material at position is tantalum, niobium, molybdenum, tungsten, titanium, platinum, copper, aluminium, carbon steel, kovar alloy or stainless steel.
20. explosion-resistant enclosure described in any one in -12 according to claim 1, wherein the thermal expansion coefficient of the central part
Equal with the thermal expansion coefficient in the pressure release portion, the thermal expansion coefficient of the enclosure body is greater than or equal to the heat in the pressure release portion
The coefficient of expansion.
21. a kind of energy storage device, wherein anti-including energy conversion component and as described in any one in claim 1-20
Quick-fried shell.
22. energy storage device according to claim 21, wherein the energy storage device is battery or capacitor.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920441653.1U CN209691814U (en) | 2019-04-02 | 2019-04-02 | Explosion-resistant enclosure and energy storage device for energy storage device |
| KR1020197036011A KR102329403B1 (en) | 2019-04-02 | 2019-04-17 | Explosion-proof housings and energy storage devices used in energy storage devices |
| JP2021555395A JP7353383B2 (en) | 2019-04-02 | 2019-04-17 | Explosion-proof casing for energy storage devices and energy storage devices |
| US16/972,675 US11742542B2 (en) | 2019-04-02 | 2019-04-17 | Explosion-proof enclosure for energy storage device and energy storage device |
| PCT/CN2019/082962 WO2020199249A1 (en) | 2019-04-02 | 2019-04-17 | Explosion-proof housing for use in energy storage apparatus, and energy storage apparatus |
| DE112019002091.9T DE112019002091T5 (en) | 2019-04-02 | 2019-04-17 | EXPLOSION-PROOF HOUSING FOR AN ENERGY STORAGE DEVICE AND AN ENERGY STORAGE DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920441653.1U CN209691814U (en) | 2019-04-02 | 2019-04-02 | Explosion-resistant enclosure and energy storage device for energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209691814U true CN209691814U (en) | 2019-11-26 |
Family
ID=68607145
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920441653.1U Active CN209691814U (en) | 2019-04-02 | 2019-04-02 | Explosion-resistant enclosure and energy storage device for energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209691814U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980149A (en) * | 2019-04-02 | 2019-07-05 | 常州微宙电子科技有限公司 | Explosion-resistant enclosure and energy storage device for energy storage device |
| DE202020106518U1 (en) | 2020-03-17 | 2021-06-22 | Schott Ag | Electrical facility |
| DE202021103495U1 (en) | 2021-06-30 | 2022-10-07 | Schott Ag | Electrical device, in particular microbattery |
-
2019
- 2019-04-02 CN CN201920441653.1U patent/CN209691814U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980149A (en) * | 2019-04-02 | 2019-07-05 | 常州微宙电子科技有限公司 | Explosion-resistant enclosure and energy storage device for energy storage device |
| CN109980149B (en) * | 2019-04-02 | 2024-06-11 | 常州微宙电子科技有限公司 | Explosion-proof housing for an energy storage device and energy storage device |
| DE202020106518U1 (en) | 2020-03-17 | 2021-06-22 | Schott Ag | Electrical facility |
| WO2021185649A1 (en) * | 2020-03-17 | 2021-09-23 | Schott Ag | Housing part, in particular microbattery and method for producing a housing part |
| WO2021185648A1 (en) | 2020-03-17 | 2021-09-23 | Schott Ag | Electrical device, in particular microbattery, and method for the production |
| CN115298782A (en) * | 2020-03-17 | 2022-11-04 | 肖特股份有限公司 | Housing part, in particular microbattery, and method for producing a housing part |
| CN115315767A (en) * | 2020-03-17 | 2022-11-08 | 肖特股份有限公司 | Electrical device, in particular microbattery, and method for producing same |
| DE202021103495U1 (en) | 2021-06-30 | 2022-10-07 | Schott Ag | Electrical device, in particular microbattery |
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