CN109509924A - A kind of lithium battery mould group bulging test fixture and test method - Google Patents
A kind of lithium battery mould group bulging test fixture and test method Download PDFInfo
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- CN109509924A CN109509924A CN201811632427.8A CN201811632427A CN109509924A CN 109509924 A CN109509924 A CN 109509924A CN 201811632427 A CN201811632427 A CN 201811632427A CN 109509924 A CN109509924 A CN 109509924A
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- mould group
- lithium battery
- battery mould
- bulging
- mounting rail
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a kind of lithium battery mould group bulging test fixtures, belong to dynamic lithium battery bulging testing field, including bottom plate, the upper surface interval of the bottom plate is welded with three lithium battery mould group mounting rails, and three lithium battery mould group mounting rails form lateral battery modules installing zone and longitudinal battery modules installing zone；Reinforcing beam is installed in the upper end of every battery modules mounting rail；End carriage is welded at the both ends of reinforcing beam.This Fixture Design simulates true battery system lower tray and real vehicle battery system structure having the same and intensity completely, and the mounting means of battery modules, gap width, arrangement mode all tally with the actual situation.The present invention also provides a kind of test methods based on above-mentioned lithium battery mould group bulging test fixture: can measure mould group in different directions, the gap width of different location, bulging amount and bulging power；It can make test result more close to true value.
Description
Technical field
The invention belongs to dynamic lithium battery bulging testing field more particularly to a kind of lithium battery mould group bulging test fixture and
Test method.
Background technique
Due to the limitation of vehicle chassis structure, electric vehicle battery system inner space is very limited, so each zero
Gap design between part is extremely important.Under the premise of guaranteeing components safe spacing, the design of Yao Jinliang Optimization gap.At present
Spacing between battery modules mainly considers creepage distance, and installation assembly space, but since lithium battery self character determines,
Dynamic lithium battery is in charge and discharge process, and since the reaction of battery core internal chemical can generate certain gas, there are also cathode graphite
The reasons such as kernel structure fluffy, battery modules will appear a degree of bulging phenomenon in charge and discharge process.
During multiple battery cores form a battery modules, the bulging of battery core can add up, and cause bulging problem more aobvious
It writes.The design of module internal structure has used some buffer structures, so a part of bulging can be solved in modular structure
Portion, battery core, which continues bulging, will cause the oxygen blast cyanidation of entire battery modules, although overall deformation is more small, still
Bulging power will have a direct impact on the key performances such as capacity and the cycle life of battery core, if bulging power crosses senior general and causes battery core capacity
Rapid decrease.And bulging problem can also cause the design spacing between battery membranes group to become smaller.Mould group, connection trim strip, copper bar and
Stress between battery pack cabinet increases, and jeopardizes the electrical property and structure safety of entire battery system.
The research and test of lithium battery bulging problem at present, is generally concentrated at battery core and battery modules rank, it is few
The test of battery package level because the test of battery system rank need entire battery system, higher cost and volume compared with
Greatly, since Environmental Incubator box space limits, test operation is difficult to realize.The bulging analysis of general battery system is all using emulation point
The form of analysis carries out, but due to the inaccuracy of emulation input parameter, there are deviations for simulation architecture and actual result.
A kind of bulging testing field for lithium ion power battery used for electromobile mould group is designed thus.It can be used for battery
The lithium battery mould group bulging that the charge-discharge performance of mould group tests the security test of design gaps between battery modules tests work
Dress.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of lithium battery mould group bulging test fixture and test sides
Method；It is tested for the bulging problem of entire battery system rank, can more imitate true battery system service condition；Test
As a result more acurrate.This test fixture can surround mould group bulging problem, test oxygen blast cyanidation amount, bulging power, bolt strength, battery
The problems such as end of lifetime performance, is tested.
A kind of lithium battery mould group bulging test fixture, including bottom plate, the upper surface interval of the bottom plate are welded with three lithiums
Battery modules mounting rail, three lithium battery mould group mounting rails are respectively the first lithium battery mould group mounting rail, the second lithium battery mould group
Mounting rail and third lithium battery mould group mounting rail, wherein the first lithium battery mould group mounting rail and the second lithium battery mould group mounting rail it
Between form lateral battery modules installing zone；Shape between the second lithium battery mould group mounting rail and third lithium battery mould group mounting rail
At longitudinal battery modules installing zone；First lithium battery mould group mounting rail, the second lithium battery mould group mounting rail and third lithium battery mould
Lithium battery mould group installation site is corresponded in group is welded with nut；Reinforcing beam is installed in the upper end of every battery modules mounting rail；
End carriage is welded at the both ends of reinforcing beam.
Preferred in above structure, the reinforcing beam uses metal plate bending structure, mainly includes two parallel support plates
With the upper plate for being located at integrated bending above support plate, the upper fixed board is evenly distributed in the upper surface equipped with multiple location holes；Reinforcing
Beam both ends are welded with cabinet collision crumple end, and cabinet collides the outer end face of crumple end and end carriage welds；The cabinet touches
Crumple end is hit to be made of two collision crumple plates disposed in parallel, two individual collision crumple plates respectively with reinforcing beam respective side
Support plate welding；The top of two collision crumple plates is equipped with towards the inclined groove in end carriage direction.
It is preferred in above structure, the first lithium battery mould group mounting rail, the second lithium battery mould group mounting rail and third
Lithium battery mould group mounting rail is all made of metal plate bending structure, mainly includes that horizontal connection portion, vertical support portion and reinforcing beam connect
Socket part；The horizontal supporting portion and bottom plate weld, and protrusion is stamped in horizontal connection portion, and the protrusion is equipped with lithium battery mould
Group mounting hole；Vertically weld reinforcing beam in the upper surface of reinforcing beam interconnecting piece.
Preferred in above structure, the centre of the reinforcing beam interconnecting piece is to having stress deformation slot.
Preferred in above structure, the shape of stress deformation slot is triangular structure.
Invention additionally discloses a kind of test methods based on above-mentioned lithium battery mould group bulging test fixture: including following step
It is rapid:
S1, lithium battery mould group to be measured is scanned using 3D scanner；Obtain lithium battery mould group initial data；
S2, the stainless steel bolt using M6*92, by lithium battery mould group fixed lateral battery modules installing zone and longitudinal battery
Mould group installing zone；There are three lithium battery mould group, three adjacent lithium battery mould groups are first for installation in lateral battery modules installing zone
Tail is connected in series, and three adjacent lithium battery mould group 3~5mm of interval；There are six the installations of longitudinal battery modules installing zone
Lithium battery mould group, six lithium battery mould group head and the tail are connected in series；And three adjacent lithium battery mould group 3~5mm of interval；Pressure
The pressure value of sensor
S3, bolt and copper bar using M6*16, by the lithium battery mould group and longitudinal mould group installation in lateral mould group installing zone
Lithium battery mould group is connected in area；The pressure sensor of detection bulging pressure is installed between adjacent lithium battery mould group；
S4, according to 35 DEG C, 1C/1C charge and discharge, depth of discharge 100% is spaced the test side of 30min between each charge and discharge
Method carries out charge and discharge cycles test to mould group；
S5, period every 100 circulations use the adjacent lithium electricity of vernier caliper measurement in the case where battery modules are fully charged
Length, the change width in gap and lithium battery mould group between Chi Mo group；Bulging most serious point among each clearance measurement, measurement
It is averaged, and records measurement numerical value for 3 times；And the pressure value of pressure sensor at this time, this pressure most lithium battery mould
The numerical value of group bulging power；
After S6, test are completed, lithium battery mould group is unloaded, 3D scanner is reused and is scanned, obtains lithium
Data after battery modules test；Then this data is compared with the initial data of lithium battery mould group, obtains lithium battery mould
The bulging situation of change of group.
The present invention has the advantage that and technical effect: this Fixture Design, simulates true battery system lower tray completely, and
Real vehicle battery system structure having the same and intensity, and the mounting means of battery modules, gap width, arrangement mode are all
It tallies with the actual situation.This tooling test in using there is pressure sensor, can measure mould group in different directions, different location
Gap width, bulging amount and bulging power；It can make test result more close to true value.
Detailed description of the invention
Fig. 1 is main view of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is A-A cross-sectional view in Fig. 2；
Fig. 4 is perspective view of the present invention；
Fig. 5 is reinforcing beam structural schematic diagram；
Fig. 6 is lithium battery mould group mounting rail structural schematic diagram；
Fig. 7 is usage state diagram of the present invention.
In figure, 10, bottom plate；20, the first lithium battery mould group mounting rail；21, the second lithium battery mould group mounting rail；22, third
Lithium battery mould group mounting rail；23, nut；24, horizontal connection portion；25, vertical support portion；26, reinforcing beam interconnecting piece；30, laterally
Battery modules installing zone；40, longitudinal battery modules installing zone；50, reinforcing beam；51, support plate；52, upper plate；53, location hole；
54, cabinet collides crumple end；540, crumple plate is collided；541, groove；55, stress deformation slot；60, end carriage.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention provides one kind and simulates true battery system lower tray and real vehicle battery system knot having the same completely
Structure and intensity, and the mounting means of battery modules, gap width, arrangement mode are all the lower carry out lithium electricity to tally with the actual situation
The lithium battery mould group bulging test fixture of Chi Mo group bulging test.In order to which this tool structure and test method is described in detail, below
It is described with reference to the accompanying drawings as follows:
Fig. 1 is please referred to Fig. 7；A kind of lithium battery mould group bulging test fixture, including bottom plate 10, the upper surface of the bottom plate
Interval is welded with three lithium battery mould group mounting rails, and three lithium battery mould group mounting rails are respectively the first lithium battery mould group mounting rail
20, the second lithium battery mould group mounting rail 21 and third lithium battery mould group mounting rail 22, wherein the first lithium battery mould group mounting rail and
Lateral battery modules installing zone 30 is formed between second lithium battery mould group mounting rail；The second lithium battery mould group mounting rail and
Longitudinal battery modules installing zone 40 is formed between three lithium battery mould group mounting rails；First lithium battery mould group mounting rail, the second lithium electricity
Lithium battery mould group installation site, which is corresponded to, on Chi Mo group mounting rail and third lithium battery mould group is welded with nut 23；In every battery mould
The upper end of group mounting rail is equipped with reinforcing beam 50；End carriage 60 is welded at the both ends of reinforcing beam.
Preferred in above structure, the reinforcing beam 50 uses metal plate bending structure, mainly includes two parallel supports
Plate 51 and above support plate integrated bending upper plate 52, the upper fixed board is evenly distributed in the upper surface equipped with multiple location holes
53, the effect of location hole is to position battery modules, guarantees the gap between mould group in dimensional tolerance range；In reinforcing beam two
End is welded with cabinet collision crumple end 54, and cabinet collides the outer end face of crumple end and end carriage 60 welds；The cabinet touches
It hits crumple end to be made of two collision crumple plates 540 disposed in parallel, two individual collision crumple plates are corresponding with reinforcing beam respectively
The support plate of side is welded；The top of two collision crumple plates is equipped with towards the inclined groove 541 in end carriage direction.
It is preferred in above structure, the first lithium battery mould group mounting rail, the second lithium battery mould group mounting rail and third
Lithium battery mould group mounting rail is all made of metal plate bending structure, mainly includes horizontal connection portion 24, vertical support portion 25 and reinforcement
Beam interconnecting piece 26；The horizontal supporting portion and bottom plate weld, and protrusion 27 are stamped in horizontal connection portion, the protrusion is equipped with
Lithium battery mould group mounting hole 28；Vertically weld reinforcing beam in the upper surface of reinforcing beam interconnecting piece.
Preferred in above structure, the centre of the reinforcing beam interconnecting piece is to having stress deformation slot 55.
Preferred in above structure, the shape of stress deformation slot is triangular structure.
Invention additionally discloses a kind of test methods based on above-mentioned lithium battery mould group bulging test fixture: including following step
It is rapid:
S1, lithium battery mould group to be measured is scanned using 3D scanner；Obtain lithium battery mould group initial data；
S2, the stainless steel bolt using M6*92, by lithium battery mould group fixed lateral battery modules installing zone and longitudinal battery
Mould group installing zone；There are three lithium battery mould group, three adjacent lithium battery mould groups are first for installation in lateral battery modules installing zone
Tail is connected in series, and three adjacent lithium battery mould group 3~5mm of interval；There are six the installations of longitudinal battery modules installing zone
Lithium battery mould group, six lithium battery mould group head and the tail are connected in series；And three adjacent lithium battery mould group 3~5mm of interval；Pressure
The pressure value of sensor
S3, bolt and copper bar using M6*16, by the lithium battery mould group and longitudinal mould group installation in lateral mould group installing zone
Lithium battery mould group is connected in area；The pressure sensor of detection bulging pressure is installed between adjacent lithium battery mould group；Pressure
Sensor uses CPR830-5T-S01 model: CPR16-50KN.Range: 0 to 5 tons of precision can reach 5%.With small in size, height
The features such as precision.
S4, according to 35 DEG C, 1C/1C charge and discharge, depth of discharge 100% is spaced the test side of 30min between each charge and discharge
Method carries out charge and discharge cycles test to mould group；
S5, period every 100 circulations use the adjacent lithium electricity of vernier caliper measurement in the case where battery modules are fully charged
Length, the change width in gap and lithium battery mould group between Chi Mo group；Bulging most serious point among each clearance measurement, measurement
It is averaged, and records measurement numerical value for 3 times；And the pressure value of pressure sensor at this time, this pressure most lithium battery mould
The numerical value of group bulging power；
After S6, test are completed, lithium battery mould group is unloaded, 3D scanner is reused and is scanned, obtains lithium
Data after battery modules test；Then this data is compared with the initial data of lithium battery mould group, obtains lithium battery mould
The bulging situation of change of group.
This Fixture Design simulates true battery system lower tray and real vehicle battery system structure having the same completely
And intensity, and the mounting means of battery modules, gap width, arrangement mode all tally with the actual situation.In the test of this tooling
Using there is pressure sensor, can measure mould group in different directions, the gap width of different location, bulging amount and bulging power；It can
So that test result is more close to true value.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of lithium battery mould group bulging test fixture, which is characterized in that including bottom plate, the upper surface interval of the bottom plate is welded
There are three lithium battery mould group mounting rails, three lithium battery mould group mounting rails are respectively the first lithium battery mould group mounting rail, the second lithium
Battery modules mounting rail and third lithium battery mould group mounting rail, wherein the first lithium battery mould group mounting rail and the second lithium battery mould group
Lateral battery modules installing zone is formed between mounting rail；The second lithium battery mould group mounting rail and the installation of third lithium battery mould group
Longitudinal battery modules installing zone is formed between beam；First lithium battery mould group mounting rail, the second lithium battery mould group mounting rail and third
Lithium battery mould group installation site is corresponded in lithium battery mould group is welded with nut；It is equipped in the upper end of every battery modules mounting rail
Reinforcing beam；End carriage is welded at the both ends of reinforcing beam.
2. lithium battery mould group bulging test fixture according to claim 1, it is characterised in that: the reinforcing beam is rolled over using metal plate
Kinking structure, mainly including two parallel support plates and positioned at support plate above one bending upper plate, the upper fixed board
It is evenly distributed in the upper surface and is equipped with multiple location holes；It is welded with cabinet collision crumple end at reinforcing beam both ends, cabinet collides crumple end
The outer end face and end carriage of head weld；Cabinet collision crumple end is made of two collision crumple plates disposed in parallel, and two
Body collides crumple plate and welds respectively with the support plate of reinforcing beam respective side；The top of two collision crumple plates is equipped with towards end carriage side
To inclined groove.
3. lithium battery mould group bulging test fixture according to claim 1, it is characterised in that: the first lithium battery mould group peace
Dress beam, the second lithium battery mould group mounting rail and third lithium battery mould group mounting rail are all made of metal plate bending structure, mainly include water
Flushconnection portion, vertical support portion and reinforcing beam interconnecting piece；The horizontal supporting portion and bottom plate weld, and rush in horizontal connection portion
It is pressed with protrusion, the protrusion is equipped with lithium battery mould group mounting hole；The upper surface of reinforcing beam interconnecting piece, which is vertically welded, to be added
Brutal.
4. lithium battery mould group bulging test fixture according to claim 3, it is characterised in that: in the reinforcing beam interconnecting piece
Between to having stress deformation slot.
5. lithium battery mould group bulging test fixture according to claim 4, it is characterised in that: the shape of stress deformation slot is three
Angular structure.
6. the test method based on any lithium battery mould group bulging test fixture of the claims 1 to 5: its feature exists
In: the following steps are included:
S1, lithium battery mould group to be measured is scanned using 3D scanner；Obtain lithium battery mould group initial data；
S2, the stainless steel bolt using M6*92, by lithium battery mould group fixed lateral battery modules installing zone and longitudinal battery modules
Installing zone；There are three lithium battery mould groups, three adjacent lithium battery mould group head and the tail to go here and there for installation in lateral battery modules installing zone
Connection connects, and three adjacent lithium battery mould group 3~5mm of interval；In the installation of longitudinal battery modules installing zone, there are six lithium electricity
Chi Mo group, six lithium battery mould group head and the tail are connected in series；And three adjacent lithium battery mould group 3~5mm of interval；Pressure sensing
The pressure value of device
S3, bolt and copper bar using M6*16, will be in the lithium battery mould group and longitudinal mould group installing zone in lateral mould group installing zone
The series connection of lithium battery mould group；The pressure sensor of detection bulging pressure is installed between adjacent lithium battery mould group；
S4, according to 35 DEG C, 1C/1C charge and discharge, depth of discharge 100% is spaced the test method of 30min between each charge and discharge,
Charge and discharge cycles test is carried out to mould group；
S5, period every 100 circulations, in the case where battery modules are fully charged, use the adjacent lithium battery mould of vernier caliper measurement
Length, the change width in gap and lithium battery mould group between group；Bulging most serious point among each clearance measurement measures 3 times
It is averaged, and records measurement numerical value；And the pressure value of pressure sensor at this time, this pressure most lithium battery mould group drum
The numerical value of expansive force；
After S6, test are completed, lithium battery mould group is unloaded, 3D scanner is reused and is scanned, obtains lithium battery
Data after the test of mould group；Then this data is compared with the initial data of lithium battery mould group, obtains lithium battery mould group
Bulging situation of change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632427.8A CN109509924A (en) | 2018-12-29 | 2018-12-29 | A kind of lithium battery mould group bulging test fixture and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632427.8A CN109509924A (en) | 2018-12-29 | 2018-12-29 | A kind of lithium battery mould group bulging test fixture and test method |
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| CN109509924A true CN109509924A (en) | 2019-03-22 |
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| CN201811632427.8A Pending CN109509924A (en) | 2018-12-29 | 2018-12-29 | A kind of lithium battery mould group bulging test fixture and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034261A (en) * | 2019-05-22 | 2019-07-19 | 湖南科霸汽车动力电池有限责任公司 | The automobile-used nickel-metal hydride battery packet of two-wheel electric |
| CN110068409A (en) * | 2019-04-11 | 2019-07-30 | 蜂巢能源科技有限公司 | Lithium battery stress prediction method and apparatus |
-
2018
- 2018-12-29 CN CN201811632427.8A patent/CN109509924A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068409A (en) * | 2019-04-11 | 2019-07-30 | 蜂巢能源科技有限公司 | Lithium battery stress prediction method and apparatus |
| CN110034261A (en) * | 2019-05-22 | 2019-07-19 | 湖南科霸汽车动力电池有限责任公司 | The automobile-used nickel-metal hydride battery packet of two-wheel electric |
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