CN114976453A - Battery package and battery package quick change structure - Google Patents
Battery package and battery package quick change structure Download PDFInfo
- Publication number
- CN114976453A CN114976453A CN202210609530.0A CN202210609530A CN114976453A CN 114976453 A CN114976453 A CN 114976453A CN 202210609530 A CN202210609530 A CN 202210609530A CN 114976453 A CN114976453 A CN 114976453A
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- Prior art keywords
- sleeve
- quick
- battery pack
- change structure
- bolt
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack and a quick-change structure thereof, the structure comprises a sleeve, a limit closing plate and a special bolt, the special bolt is provided with an adjusting part, a locking section and a limit part positioned between the adjusting part and the locking section, and the quick-change structure also comprises: the return spring is positioned in the accommodating cavity, sleeved on the locking section and abutted against the limiting part so as to enable the special bolt to have a return trend; the limiting ring sleeve is positioned in the accommodating cavity and sleeved on the locking section so as to stop the limit extending position of the special bolt; and the locknut is provided with a thread part positioned in the sleeve and a flange part extending out of the sleeve, wherein the thread part is an external thread and is in threaded connection with the inner wall of the sleeve, and the locknut generates locking force by torque provided by an external tool so as to compress the limiting part of the special bolt. This quick change structure of battery package simple structure is fit for automatic assembly, has locking effect, can keep the fixed moment of torsion of design for a long time, satisfies the demand of operating modes such as abominable vibration.
Description
Technical Field
The invention relates to the technical field of vehicle battery pack electricity changing, in particular to a battery pack and a battery pack quick-changing structure.
Background
Most of present battery package adopts the bolt rather than the mode that supports fixed knot and construct locking, and this fixed mode can only be fixed through manual spanner or electronic tightening tool, and the installation can only be installed through artifical or semi-automatic mode at every turn, and is inefficient, and can't satisfy the demand of installing fast/dismantling the battery package.
Chinese patent document CN 205800767U provides a locking mechanism for a power battery, which has the capability of quickly changing the power battery, but has a complex structure, high cost and great processing difficulty.
Aiming at the requirements of the current market on replacing the battery pack, such as use scenes of a battery replacement station and the like, the invention provides a structure for quickly mounting/dismounting the battery pack, which has high efficiency and simple structure, and is uniformly described as a quick-change structure in the following.
Disclosure of Invention
The invention aims to provide a quick-change structure of a battery pack and the battery pack using the same, which have simple and reliable structures and anti-loosening effect.
Therefore, the invention provides a quick-change structure for a battery pack, which comprises a sleeve and a limiting seal plate, wherein the sleeve and the limiting seal plate form an accommodating cavity, the quick-change structure further comprises a specially-made bolt arranged in the accommodating cavity, the specially-made bolt is provided with an adjusting part, a locking section and a limiting part positioned between the adjusting part and the locking section, the limiting seal plate of the sleeve is provided with an opening for the specially-made bolt to extend out, and the quick-change structure further comprises: the return spring is positioned in the accommodating cavity, sleeved on the locking section and abutted against the limiting part so as to enable the special bolt to have a return trend; the limiting ring sleeve is positioned in the accommodating cavity and sleeved on the locking section so as to stop the limit extending position of the special bolt; and the locknut is provided with a thread part positioned in the sleeve and a flange part extending out of the sleeve, wherein the thread part is an external thread and is in threaded connection with the inner wall of the sleeve, and the locknut generates locking force by torque provided by an external tool so as to compress the limiting part of the special bolt.
According to another aspect of the present invention, there is provided a battery pack, comprising a side frame, on which a plurality of battery pack quick-change structures according to the above description are disposed.
The invention has the following technical characteristics/advantages:
1. the battery pack quick-change structure has the capability of quickly mounting/dismounting the battery pack, can realize full-automatic mounting and dismounting of the battery pack, and is high in assembly efficiency.
2. This battery package quick change structure has locking effect, can keep the fixed moment of torsion of design for a long time, satisfies the demand of operating modes such as abominable vibration.
3. The quick-change structure of the battery pack is simple in structure, low in cost, good in implementation performance, suitable for automatic assembly and capable of reducing the probability of manual neglected installation of parts.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an exploded view of a quick-change structure of a battery pack according to the present invention;
fig. 2 is a schematic structural diagram of a specially-made bolt in the quick-change structure of the battery pack of the invention;
fig. 3 is a schematic structural view of a sleeve in the quick-change structure of the battery pack according to the present invention;
FIG. 4 is a schematic structural view of the locknut of the present invention;
fig. 5 is a schematic diagram of the usage state of the quick-change structure of the battery pack of the present invention, which shows the initial state;
fig. 6 is a schematic diagram of the use state of the quick-change structure of the battery pack of the present invention, which shows the locking state;
fig. 7 is a schematic structural view of a battery pack using the quick-change structure of the battery pack according to the present invention; and
fig. 8 is a flow chart of the locking and unlocking process of the quick-change structure of the battery pack according to the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 7, the quick-change structure of a battery pack of the present invention includes a position-limiting sealing plate 1 and a sleeve 2, which form a receiving cavity, and the receiving cavity receives a specially-made bolt 3, a position-limiting ring 4, a return spring 5 and a locknut 6.
The limiting seal plate 1 and the sleeve 2 are provided with openings, so that the purpose-made bolt can stretch conveniently, the opening of the limiting seal plate is favorable for an automatic wrench to enter and be embedded with the head of the purpose-made bolt, and torque generated by the automatic wrench is transmitted to the purpose-made bolt, so that the purpose-made bolt is loosened/tightened.
The locknut generates locking force through torque independently provided by an automatic wrench, and the locknut is connected with the inner wall of the sleeve through threads to limit axial movement of the specially-made bolt; similar to double-nut anti-loosening, under the condition that the special bolt is fixed with the battery pack, the anti-loosening nut is additionally arranged on the top of the special bolt to prevent the special bolt from loosening; the quick-change structure of the battery pack realizes looseness prevention and achieves the effect of quickly mounting/dismounting the battery pack.
Each part in the quick-change structure of the battery pack will be described in detail below.
The special bolt 3 is provided with an adjusting part 31, a limiting part 32 and a locking section 33. The locking section 33 is provided with threads, which may be full threads or partial threads, and the locking section 33 is connected with a nut on a fixed component (such as a vehicle body frame).
The outer contour of the limiting part 32 is larger than the locking section and the adjusting section, and the limiting part can be in the shape of a circle or a polygon, for example, a limiting shoulder integrally formed with a special bolt body.
The regulation portion 31 is polygon prism or dentate cylinder or circular-arc concave-convex structure, for example common regular hexagon cylinder, and the regulation section is mainly connected the cooperation with automatic spanner, realizes the transmission of moment of torsion. The material of the special bolt is preferably Q235A, stainless steel or the like.
The upper part of the sleeve 2 is open, the bottom of the sleeve is provided with a through hole 21, the through hole 21 at the bottom is convenient for a specially-made bolt locking section 33 to pass through, a thread section 22 and a smooth hole wall section are arranged in the sleeve 2, the thread depth can be set according to actual requirements, and the smooth hole wall section can be omitted; the sleeve material is preferably Q235A, stainless steel, etc.
The reset spring 5 and the limit ring sleeve 4 are sleeved in the specially-made bolt locking section 33, the inner diameter of the limit ring sleeve 4 is slightly larger than the outer diameter of the reset spring 5, the outer diameter D of the limit ring sleeve is smaller than or equal to the outer diameter D of the limit part of the specially-made bolt, and the reset spring 5 is used for facilitating the quick pop-up of the specially-made bolt under the elastic force action of the reset spring when the specially-made bolt is loosened, so that the head part of the specially-made bolt locking section is retracted into the sleeve.
The function of the position-limiting ring sleeve 4 is that when the special bolt fastens the bolt, the position-limiting ring sleeve provides rigid support to form a safe space, and permanent plastic deformation caused by over-pressure of the reset spring is prevented. The return spring material is preferred: stainless steel, 65Mn, piano steel; the material of the spacing ring sleeve is preferred: stainless steel, Q235A, and the like.
The locknut 6 is a special nut which is of a sectional structure, the lower part of the locknut is a thread part 61 and is of a cylindrical structure, and the outer side of the cylinder is provided with external threads which are in threaded connection with the inner wall of the sleeve; the upper portion is flange portion 62, and flange portion 62 outline size is less than screw portion 61 size, and flange portion 62 is equipped with concave-convex structure 62a, is convenient for carry out the complemental cooperation of shape with the automatic spanner, and the automatic spanner provides the moment of torsion and carries out the pine/tightness to locknut.
The central hole cavity 63 is arranged in the middle of the whole locknut 6, and the special bolt adjusting part 31 can conveniently pass through the through hole, namely, the adjusting part 31 freely rotates relative to the locknut 6 and is not restricted by the locknut 6; the locknut 6 acts as: under the condition that the special bolt is fixed, the anti-loose nut is added again for fixing, so that a downward locking force is provided for the special bolt, and the special bolt is prevented from being loosened axially; the locknut material is preferred: Q235A, stainless steel, and the like.
In the quick-change structure of the battery pack, the limiting sealing plate 1 and the sleeve 2 form an accommodating cavity, and the accommodating cavity accommodates a specially-made bolt, a limiting ring sleeve, a reset spring and a locknut; when the battery pack is disassembled and assembled, the specially-made bolt and the locknut only have 2 degrees of freedom in axial movement and rotation, so that the battery pack can be quickly assembled and disassembled; the traditional battery pack mounting and dismounting mode needs to take out the fixing bolt completely, and the mounting is carried out, so that the operation is complex. The mounting state of the quick-change structure is called a locking state, and the dismounting state is called an unlocking state.
Compared with the design of a top check nut which is fixed by a common bolt and nut, the quick-change structure for the battery pack increases the design of the top check nut, the top check nut provides downward pressure, and the pressure provided by the check nut is generally far greater than the reaction force generated by fixing a special bolt on a fixed assembly (such as a vehicle body), so that the possibility of loosening the special bolt is hindered.
As shown in fig. 7, the present invention further provides a battery pack, which includes a battery pack module 110 and a side frame 120, wherein the side frame is provided with a plurality of the battery pack quick-change structures 130.
The side frame 120 of the battery pack is provided with a seat hole 121, the sleeve 2 is arranged in the seat hole 121, and the limiting seal plate 1 is connected with the side frame 120 through a plurality of threaded fasteners 7 to hold the sleeve 2 in the seat hole 121.
The special bolt 3 and the fixing component 200 of the quick-change structure of the battery pack have an unlocking state shown in fig. 5 and a locking state shown in fig. 6. The quick-change structure of the battery pack is controlled by an automatic wrench in the two states.
The following describes a flow chart of the locking and unlocking process of the quick-change structure of the battery pack according to the present invention.
S1, enabling the automatic wrench to be close to the special bolt adjusting part;
s2, connecting the automatic wrench with the special bolt adjusting part in a matching way to carry out rotary locking;
s3, sinking the special bolt to a designated position, enabling the torque to reach a set value, and stopping increasing the torque by the automatic wrench;
s4, retracting the automatic wrench to be close to the flange part of the locknut;
s5, connecting the automatic wrench with the locknut flange in a matching manner to carry out rotary locking;
s6, the locknut sinks to be attached to the upper surface of the limiting part of the special bolt, the torque reaches a set value, and the automatic wrench stops increasing the torque;
and S7, retracting the automatic wrench to complete locking.
Wherein, in the quick change structure locking and unlocking flow, the torsion scope sets up 10 ~ 7000N.m, and its specific size is decided according to the bolt and nut model.
The preferred specifications for the specialty bolt are as follows:
1. m14: 137-225 N.m, preferably: 165 N.m;
2. m18: 284-480 N.m, recommended: 340 N.m;
the preferred specifications for the locknut are as follows:
1. m42: 2744-4606 N.m, recommend: 3800 N.m;
2. m48: 3920-6664 N.m, recommended: 5500 N.m.
For example, in a battery pack quick-change architecture, the component parameters are selected as follows: the outer diameter specification of the special bolt is M14, the screwing torque is 165N.m, the outer diameter specification of the locknut is M42, and the screwing torque is 3800 N.m.
The above is the locking process, and the unlocking process is the opposite, and will not be described herein.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a battery package quick change structure, includes sleeve and spacing shrouding, and both forms and hold the cavity, still including setting up in the purpose-built bolt that holds the cavity, its characterized in that, purpose-built bolt is equipped with regulating part, locking section and is located the spacing portion between the two, the sleeve spacing shrouding all is equipped with the opening to supply purpose-built bolt to stretch out, still include:
the return spring is positioned in the accommodating cavity, sleeved on the locking section and abutted against the limiting part so as to enable the special bolt to have a return trend;
the limiting ring sleeve is positioned in the accommodating cavity and sleeved on the locking section so as to stop the limit extending position of the special bolt; and
a locknut having a threaded portion in the sleeve and a flange portion protruding from the sleeve, wherein the threaded portion is an external thread which is threadedly coupled with an inner wall of the sleeve,
the locknut generates locking force by torque provided by an external tool so as to compress the limiting part of the special bolt.
2. The quick-change structure for battery pack according to claim 1, wherein the flange portion has a central bore, and the head portion of the adjusting portion is located in the central bore, and the central bore can receive an external tool to be engaged with the head portion of the adjusting portion to apply a screwing torque.
3. The quick-change structure for battery packs as claimed in claim 2, wherein the top end of the flange part is a concave-convex structure which can be engaged with an external tool to apply a screwing torque.
4. The quick-change structure for battery packs as claimed in claim 1, wherein the retaining ring is replaced by a retaining structure integrally formed with a specially made bolt or sleeve.
5. The quick-change structure for battery packs as claimed in claim 1, wherein the tightening torque of the locknut is greater than that of the special bolt.
6. The quick-change structure for battery pack according to claim 5,
the specifications of the special bolt comprise: (1) m14: 137-225 N.m; (2) m18: 284-480 N.m;
the specification of the locknut comprises: (1) m42: 2744-4606 N.m; (2) m48: 3920 to 6664 N.m.
7. The quick-change structure for the battery pack according to claim 1, wherein the limiting portion is a limiting shoulder integrally formed with the specially-made screw body, and the screwing portion is polygonal.
8. The quick-change structure for the battery pack according to claim 1, wherein the locking section of the specially-made bolt can be quickly retracted into the sleeve under the action of the return spring when the locking section is disengaged from the nut of the fixing assembly.
9. A battery pack, comprising a side frame, wherein a plurality of battery pack quick-change structures according to any one of claims 1 to 8 are arranged on the side frame.
10. The quick-change structure for the battery pack according to claim 9, wherein the battery pack has a side frame with a seat hole, the sleeve is disposed in the seat hole, and the position-limiting closing plate is connected to the battery pack frame through a plurality of threaded fasteners for holding the sleeve in the seat hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210609530.0A CN114976453B (en) | 2022-05-31 | 2022-05-31 | Battery package and battery package quick change structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210609530.0A CN114976453B (en) | 2022-05-31 | 2022-05-31 | Battery package and battery package quick change structure |
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| Publication Number | Publication Date |
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| CN114976453A true CN114976453A (en) | 2022-08-30 |
| CN114976453B CN114976453B (en) | 2024-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210609530.0A Active CN114976453B (en) | 2022-05-31 | 2022-05-31 | Battery package and battery package quick change structure |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116278933A (en) * | 2022-12-12 | 2023-06-23 | 东软睿驰汽车技术（沈阳）有限公司 | Battery pack replacement device and vehicle |
| CN117944509A (en) * | 2024-03-11 | 2024-04-30 | 江苏众如金属科技有限公司 | Separated type electric heavy-duty truck battery compartment locking device with clutch structure |
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| CN114458683A (en) * | 2022-01-20 | 2022-05-10 | 恒义超然工业技术(上海)有限公司 | Battery package quick assembly disassembly fastener |
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2022
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116278933A (en) * | 2022-12-12 | 2023-06-23 | 东软睿驰汽车技术（沈阳）有限公司 | Battery pack replacement device and vehicle |
| CN117944509A (en) * | 2024-03-11 | 2024-04-30 | 江苏众如金属科技有限公司 | Separated type electric heavy-duty truck battery compartment locking device with clutch structure |
| CN117944509B (en) * | 2024-03-11 | 2025-01-03 | 江苏众如金属科技有限公司 | A split electric heavy truck battery compartment locking device with a clutch structure |
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| CN114976453B (en) | 2024-10-01 |
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