CN109713177A - Electric automobile power battery lower casing - Google Patents
Electric automobile power battery lower casing Download PDFInfo
- Publication number
- CN109713177A CN109713177A CN201811458788.5A CN201811458788A CN109713177A CN 109713177 A CN109713177 A CN 109713177A CN 201811458788 A CN201811458788 A CN 201811458788A CN 109713177 A CN109713177 A CN 109713177A
- Authority
- CN
- China
- Prior art keywords
- lower casing
- poppet
- inferior valve
- inner support
- stock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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 invention discloses a lower shell of a power battery of an electric automobile, which comprises: inferior valve fore-stock, inferior valve after-poppet, set up two inferior valve collateral branch framves in inferior valve fore-stock and inferior valve after-poppet both sides, the water inlet, and the delivery port, at the inferior valve fore-stock, inferior valve after-poppet, and be provided with at least one in the space that two inferior valve collateral branch framves enclose and extend and hollow inferior valve internal support from inferior valve fore-stock to inferior valve after-poppet direction, be equipped with the inferior valve coolant liquid passageway of being connected with the roof lower surface of inferior valve internal support in the at least inferior valve internal support, inferior valve coolant liquid passageway extends to inferior valve after-poppet direction from inferior valve fore-stock, and at least inferior valve coolant liquid passageway and water inlet intercommunication, at least inferior valve coolant liquid passageway and delivery port intercommunication. The invention integrates the cooling liquid channel into the lower shell, reduces structural members, improves the reliability of the structure, reduces the number of assembling parts, reduces the size of the battery pack in the height direction and improves the riding comfort of vehicles.
Description
Technical field
The present invention relates to electric car correlative technology field, especially a kind of electric automobile power battery lower casing.
Background technique
The electric vehicle of the existing battery pack temperature control system in market, as shown in Figure 1, its general individually designed water cooling of the prior art
Pipeline or water-cooled plate 1' come cooling to battery modules 2'.Battery cold plate 1' generally passes through support construction 3', as foam is fixed on down
On shell 4', heat-conducting layer 5' is set between battery cold plate 1' and battery modules 2'.Existing complex structural designs, arrangement space
It asks high, is unfavorable for promoting the riding comfort of vehicle.
The shortcomings that prior art:
1, number of parts is more, structure is complicated, and assemble flow is cumbersome；
2, short transverse (Z-direction) occupied space is big, has an impact to vehicle rank riding comfort.
3, number of parts is more, and weight is big, is unfavorable for the lightweight of battery system and the promotion of system energy densities.
Summary of the invention
Based on this, it is necessary to be directed to disadvantage of the existing technology, provide a kind of electric automobile power battery lower casing.
The present invention provides a kind of electric automobile power battery lower casing, comprising: lower casing fore-stock, lower casing after-poppet, setting exist
Two lower casing side stands, water inlet and the water outlet of the lower casing fore-stock and lower casing after-poppet two sides, in the lower casing
At least one is provided in the space that fore-stock, the lower casing after-poppet and the two lower casing side stands are surrounded under described
Shell fore-stock extends to lower casing after-poppet direction and hollow lower casing inner support, is equipped in at least one lower casing inner support
The lower casing cooling passage connecting with the top plate lower surface of the lower casing inner support, the lower casing cooling passage is from the lower casing
Fore-stock extends to lower casing after-poppet direction, and at least one lower casing cooling passage is connected to the water inlet, until
A few lower casing cooling passage is connected to the water outlet.
Further, the cooling passage include the interconnecting piece being connect with the top plate lower surface of the lower casing inner support,
And the main part connecting with the interconnecting piece, the interconnecting piece are connected to the main part, and the width of the main part is big
In the width of the interconnecting piece.
Further, there is default gap between the main part and the top plate lower surface of the lower casing inner support.
Further, it is equipped in the lower casing inner support and prolongs from the lower casing fore-stock to lower casing after-poppet direction
The lower casing reinforcing rib stretched.
Further, the interconnecting piece is more than or equal to first distance threshold value at a distance from the lower casing reinforcing rib.
Further, the main part is more than or equal to second distance threshold value at a distance from the bottom plate of lower casing inner support.
Further, further include be arranged in the lower casing after-poppet lower casing after-poppet connection fluid passage, it is multiple it is described under
Shell cooling passage is connected to fluid passage connection with the lower casing after-poppet.
Further, the lower casing inner support is equipped with extended segment, institute in the end base close to the lower casing after-poppet
It states lower casing after-poppet and is equipped with the notch cooperated with the extended segment, the extension in the lower section of lower casing after-poppet connection fluid passage
Section is inserted into the notch.
Further, the lower casing inner support and the lower casing after-poppet are welded by the first solder joint and the second solder joint,
First solder joint is located at the contact surface of the extended segment and the notch, and second solder joint is located at the lower casing inner support
The contact surface of top plate and the lower casing after-poppet.
Further, further include the rear baffle connecting with the lower casing after-poppet and connect with the lower casing side stand
The body connection structure connect.
Cooling passage is integrated into lower casing by the present invention, is reduced the reliability of structural member, lift structure, is reduced simultaneously
Assembly part quantity reduces cost of parts and manufacturing cost conducive to the productive temp for accelerating factory.Meanwhile structural member weight subtracts
Gently, battery system energy density is promoted, battery pack short transverse size reduction, promotes vehicle riding comfort.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing battery modules water-cooled plate；
Fig. 2 is a kind of structural schematic diagram of electric automobile power battery lower casing of the present invention；
Fig. 3 is a kind of view in transverse section of electric automobile power battery lower casing of the present invention；
Fig. 4 is the sectional view of one embodiment of the invention lower casing inner support and lower casing cooling passage；
Fig. 5 is the sectional view of another embodiment of the present invention lower casing inner support and lower casing cooling passage；
Fig. 6 is a kind of longitdinal cross-section diagram of electric automobile power battery lower casing of the present invention；
Fig. 7 is the explosive view of Fig. 6 dotted box.
Specific embodiment
The present invention will be further described in detail in the following with reference to the drawings and specific embodiments.
It is illustrated in figure 2 a kind of structural schematic diagram of electric automobile power battery lower casing 100 of the present invention, comprising: before lower casing
Bracket 101, lower casing after-poppet 102, two lower casings that the lower casing fore-stock 101 and 102 two sides of lower casing after-poppet are set
Side stand 103, water inlet 106 and water outlet 107, the lower casing fore-stock 101, the lower casing after-poppet 102 and
After at least one is provided in the space that the two lower casing side stands 103 are surrounded from the lower casing fore-stock 101 to the lower casing
102 direction of bracket extends and hollow lower casing inner support 104, is equipped with and the lower casing in at least one lower casing inner support 104
The lower casing cooling passage 105 of the top plate lower surface connection of inner support 104, the lower casing cooling passage 105 is from the lower casing
Fore-stock 101 extends to 102 direction of lower casing after-poppet, and at least one lower casing cooling passage 105 and the water inlet
Mouth 106 is connected to, and at least one lower casing cooling passage 105 is connected to the water outlet 107.
Specifically, lower casing inner support 104 and lower casing cooling passage 105 can use aluminium material, use extrusion molding
Processing method integrated molding processing, after integrated molding cost be lower than the prior art.While reinforcing lower casing mechanical strength,
Realize refrigerating function.Lower casing inner support 104 and the combination of lower casing cooling passage 105 are unlimited.It can be set under one
Shell inner support 104, and one or more lower casing cooling passages 105 are set in lower casing inner support 104, it also can be set multiple
One or more lower casing cooling passages 105 are arranged in lower casing inner support 104 in each lower casing inner support 104.If be only arranged
One lower casing cooling passage 105, then 105 rear and front end of lower casing cooling passage respectively with water inlet 106 and water outlet 107
Connection.If multiple lower casing cooling passages 105 are arranged, it is connected between multiple lower casing cooling passages 105, at least described in one
Lower casing cooling passage 105 is connected to the water inlet 106, at least one lower casing cooling passage 105 and the water outlet
107 connections.The setting position of water inlet 106 and water outlet 107 is unlimited.In Fig. 2, water inlet 106 and the setting of water outlet 107 exist
Lower casing fore-stock 101 only illustrates.In fact, water inlet 106 and water outlet 107 prop up before lower casing being arranged in simultaneously
In lower casing fore-stock 101, another setting is propped up after lower casing in lower casing after-poppet 102 or a setting for frame 101, simultaneously setting
Frame 102.Coolant liquid, such as water enter from water inlet 106, and into lower casing cooling passage 105, battery modules are placed on lower casing
104 top of inner support, the heat of battery modules are transmitted to lower casing cooling passage 105 by the top plate of lower casing inner support 104,
It is taken away by the coolant liquid in lower casing cooling passage 105, coolant liquid is flowed out via water outlet 107, takes away heat.Battery modules with
It is thermally conductive that heat-conducting layer progress can be set between the top plate of lower casing inner support 104.
Cooling passage is integrated into lower casing by the present invention, is reduced the reliability of structural member, lift structure, is reduced simultaneously
Assembly part quantity reduces cost of parts and manufacturing cost conducive to the productive temp for accelerating factory.Meanwhile structural member weight subtracts
Gently, battery system energy density is promoted, battery pack short transverse size reduction, promotes vehicle riding comfort.
As shown in figure 4, the cooling passage 105 includes and the lower casing inner support 104 in one of the embodiments,
The connection of top plate lower surface interconnecting piece 1051 and the main part 1052 that is connect with the interconnecting piece 1051, the interconnecting piece
1051 are connected to the main part 1052, and the width of the main part 1052 is greater than the width of the interconnecting piece 1051.
Specifically, width direction refers to from shell-side bracket 103 once to the extending direction of another lower casing side stand 103.
As shown in figure 5, having default sky between the main part 1052 and the top plate lower surface of the lower casing inner support 104
Gap.
It is equipped in the lower casing inner support 104 in one of the embodiments, from the lower casing fore-stock 101 under described
The lower casing reinforcing rib 108 that 102 direction of shell after-poppet extends.
The present embodiment increases reinforcing rib 108 to improve the intensity of lower casing inner support 104.
The interconnecting piece 1051 is more than or equal to the at a distance from the lower casing reinforcing rib 108 in one of the embodiments,
One distance threshold.
Preferably, first distance threshold value is 10 millimeters.
Horizontal distance >=first distance threshold value of the present embodiment cooling passage 105 and lower casing reinforcing rib 108 reduces cooling
Heat radiation and heat transfer of the liquid channel 105 to 104 lower surface of lower casing reinforcing rib 108 and lower casing inner support, improve cooling system effect
Rate.
The main part 1052 is more than or equal at a distance from the bottom plate of lower casing inner support 104 in one of the embodiments,
Second distance threshold value.
Preferably, second distance threshold value is 5 millimeters.
Vertical range >=second distance threshold value of the table below lower casing inner support 104 of the present embodiment cooling passage 105,
Reducing cooling passage 105, the heat radiation of table and heat transfer, reduction thermal loss improve cooling below to lower casing inner support 104
System effectiveness.
It in one of the embodiments, further include the lower casing after-poppet connection liquid being arranged in the lower casing after-poppet 102
Road 109, multiple lower casing cooling passages 105 are connected to the connection of fluid passage 109 with the lower casing after-poppet.
The inner cavity of lower casing after-poppet 102 is connected to fluid passage 109 by the present embodiment, thus by propping up after lower casing
Frame connection fluid passage 109 is integrated into lower casing after-poppet 102.
As shown in fig. 6, the lower casing inner support 104 is close to the lower casing after-poppet 102 in one of the embodiments,
End base be equipped with extended segment 1041, the lower casing after-poppet 102 the lower casing after-poppet connection fluid passage 109 lower section set
There is the notch 1021 with the extended segment 1041 cooperation, the notch 1021 is inserted into the extended segment 1041.
Specifically, lower shell structure uses piecemeal welding, the connection of " Tenon " structure.
The lower shell structure of the present embodiment is connected using joinery and its construction, and in addition to welded connecting, mortise-tenon joint itself can be held
Power considerably increases the intensity of connecting portion.
The lower casing inner support 104 passes through the first solder joint with the lower casing after-poppet 102 in one of the embodiments,
1042 and second solder joint 1043 weld, first solder joint 1042 is located at the contact of the extended segment 1041 and the notch 1021
Face, second solder joint 1043 are located at the top plate of the lower casing inner support 104 and the contact surface of the lower casing after-poppet 102.
The pad of the present embodiment avoids water channel, ensure that the integrality of water channel, avoids the risk of durable rear leak.
Further include in one of the embodiments, the rear baffle 110 being connect with the lower casing after-poppet 102 and with institute
State the body connection structure 111 of the connection of lower casing side stand 103.
As preferred embodiment, as shown in Figures 2 to 7, a kind of structure of electric automobile power battery lower casing 100
Schematic diagram, comprising: lower casing fore-stock 101, lower casing after-poppet 102, setting are propped up after the lower casing fore-stock 101 and the lower casing
Two lower casing side stands 103 of 102 two sides of frame, water inlet 106, water outlet 107, the rear gear being connect with the lower casing after-poppet 102
Plate 110 and the body connection structure 111 being connect with the lower casing side stand 103, under the lower casing fore-stock 101, described
At least one is provided with from the lower casing fore-stock in the space that shell after-poppet 102 and the two lower casing side stands 103 are surrounded
101 extend and hollow lower casing inner support 104 to 102 direction of lower casing after-poppet, in at least one lower casing inner support 104
Equipped with the lower casing cooling passage 105 being connect with the top plate lower surface of the lower casing inner support 104, the lower casing cooling passage
105 extend from the lower casing fore-stock 101 to 102 direction of lower casing after-poppet, multiple 105 phases of lower casing cooling passage
It is intercommunicated, and at least one lower casing cooling passage 105 is connected to the water inlet 106, at least one lower casing coolant liquid
Channel 105 is connected to the water outlet 107, is additionally provided in the lower casing inner support 104 from the lower casing fore-stock 101 to described
The lower casing reinforcing rib 108 that 102 direction of lower casing after-poppet extends, lower casing inner support 104 and lower casing cooling passage 105 use aluminium
Matter is integrally formed；
Wherein the cooling passage 105 includes the interconnecting piece connecting with the top plate lower surface of the lower casing inner support 104
1051 and the main part 1052 that is connect with the interconnecting piece 1051, the interconnecting piece 1051 be connected to the main part 1052,
And the width of the main part 1052 is greater than the width of the interconnecting piece 1051；
Lower casing after-poppet, which is equipped with, in the lower casing after-poppet 102 is connected to fluid passage 109, multiple lower casing cooling passages
105 are connected to the connection of fluid passage 109 with the lower casing after-poppet, and the lower casing inner support 104 is close to the lower casing after-poppet 102
End base is equipped with extended segment 1041, and the lower casing after-poppet 102 is equipped in the lower section of lower casing after-poppet connection fluid passage 109
With the notch 1021 of the extended segment 1041 cooperation, the notch 1021, the lower casing inner support are inserted into the extended segment 1041
104 are welded with the lower casing after-poppet 102 by the first solder joint 1042 and the second solder joint 1043, and first solder joint 1042 is located at
The contact surface of the extended segment 1041 and the notch 1021, second solder joint 1043 are located at the lower casing inner support 104
The contact surface of top plate and the lower casing after-poppet 102.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of electric automobile power battery lower casing (100) characterized by comprising propped up after lower casing fore-stock (101), lower casing
Frame (102), setting the lower casing fore-stock (101) and the lower casing after-poppet (102) two sides two lower casing side stands
(103), water inlet (106) and water outlet (107), the lower casing fore-stock (101), the lower casing after-poppet (102),
And two be provided at least one from the lower casing fore-stock (101) to institute in the space that is surrounded of the lower casing side stand (103)
The extension of lower casing after-poppet (102) direction and hollow lower casing inner support (104) are stated, at least one lower casing inner support (104) is interior
Equipped with the lower casing cooling passage (105) being connect with the top plate lower surface of the lower casing inner support (104), the lower casing coolant liquid
Channel (105) extends from lower casing fore-stock (101) Xiang Suoshu lower casing after-poppet (102) direction, and at least one lower casing
Cooling passage (105) is connected to the water inlet (106), at least one lower casing cooling passage (105) and the water outlet
Mouth (107) connection.
2. electric automobile power battery lower casing (100) according to claim 1, which is characterized in that the cooling passage
(105) include the interconnecting piece (1051) being connect with the top plate lower surface of the lower casing inner support (104) and with the interconnecting piece
(1051) main part (1052) connected, the interconnecting piece (1051) is connected to the main part (1052), and the main part
(1052) width is greater than the width of the interconnecting piece (1051).
3. electric automobile power battery lower casing (100) according to claim 2, which is characterized in that the main part
(1052) there is default gap between the top plate lower surface of the lower casing inner support (104).
4. electric automobile power battery lower casing (100) according to claim 2 or 3, which is characterized in that branch in the lower casing
The lower casing reinforcing rib extended from lower casing fore-stock (101) Xiang Suoshu lower casing after-poppet (102) direction is equipped in frame (104)
(108)。
5. electric automobile power battery lower casing (100) according to claim 4, which is characterized in that the interconnecting piece
(1051) it is more than or equal to first distance threshold value at a distance from the lower casing reinforcing rib (108).
6. electric automobile power battery lower casing (100) according to claim 4, which is characterized in that the main part
(1052) it is more than or equal to second distance threshold value at a distance from the bottom plate of lower casing inner support (104).
7. electric automobile power battery lower casing (100) according to claim 1, which is characterized in that further include being arranged in institute
State lower casing after-poppet connection fluid passage (109) in lower casing after-poppet (102), multiple lower casing cooling passages (105) and institute
State lower casing after-poppet connection fluid passage (109) connection.
8. electric automobile power battery lower casing (100) according to claim 7, which is characterized in that the lower casing inner support
(104) extended segment (1041) are equipped in the end base close to the lower casing after-poppet (102), the lower casing after-poppet (102)
The notch (1021) cooperated with the extended segment (1041), institute are equipped in the lower section of lower casing after-poppet connection fluid passage (109)
It states extended segment (1041) and is inserted into the notch (1021).
9. according to the electric automobile power battery lower casing (100) according to any one of claims 8, which is characterized in that in the lower casing
Bracket (104) and the lower casing after-poppet (102) are welded by the first solder joint (1042) and the second solder joint (1043), and described first
Solder joint (1042) is located at the contact surface of the extended segment (1041) and the notch (1021), and second solder joint (1043) is located at
The contact surface of the top plate of the lower casing inner support (104) and the lower casing after-poppet (102).
10. electric automobile power battery lower casing (100) according to claim 1, which is characterized in that further include with it is described under
The rear baffle (110) of shell after-poppet (102) connection and the body connection structure being connect with the lower casing side stand (103)
(111)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811458788.5A CN109713177B (en) | 2018-11-30 | 2018-11-30 | Electric automobile power battery lower casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811458788.5A CN109713177B (en) | 2018-11-30 | 2018-11-30 | Electric automobile power battery lower casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109713177A true CN109713177A (en) | 2019-05-03 |
| CN109713177B CN109713177B (en) | 2021-12-17 |
Family
ID=66254460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811458788.5A Active CN109713177B (en) | 2018-11-30 | 2018-11-30 | Electric automobile power battery lower casing |
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| Country | Link |
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| CN (1) | CN109713177B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110233216A (en) * | 2019-05-27 | 2019-09-13 | 蜂巢能源科技有限公司 | Battery pack and vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109713177B (en) | 2021-12-17 |
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