CN115436807A - Power battery test system and test method - Google Patents
Power battery test system and test method Download PDFInfo
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- CN115436807A CN115436807A CN202211065641.6A CN202211065641A CN115436807A CN 115436807 A CN115436807 A CN 115436807A CN 202211065641 A CN202211065641 A CN 202211065641A CN 115436807 A CN115436807 A CN 115436807A
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- 238000012360 testing method Methods 0.000 title claims abstract description 133
- 238000010998 test method Methods 0.000 title abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000009434 installation Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 14
- 238000012545 processing Methods 0.000 description 5
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- 238000001228 spectrum Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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Abstract
The embodiment of the disclosure provides a test system and a test method for a power battery, wherein the test system for the power battery comprises: an environment bin; the test bed is arranged in the environment bin and comprises a table top; the battery fixing device is detachably arranged on the table board and comprises two clamping mechanisms which are oppositely arranged at a certain distance, the power battery is arranged between the two clamping mechanisms, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate, the bottom plate and the top plate are oppositely arranged up and down, the vertical plates are arranged between the bottom plate and the top plate and are respectively connected with the bottom plate and the top plate, a first mounting space is formed above the top plate, and a second mounting space is formed between the top plate and the bottom plate so as to fix the power battery from the upper side or the lower side of the top plate. The power battery testing device can be compatible with power batteries of different installation modes and different sizes, improves the testing application range, and is low in cost.
Description
Technical Field
The disclosure relates to the technical field of power battery testing, in particular to a testing system and a testing method for a power battery.
Background
Along with the rapid development of electric vehicles, more and more power batteries are developed and designed, and each power battery needs to be subjected to detailed test verification, including bench tests such as salt spray, high and low temperatures, vibration, bottom ball impact and the like. In the prior art, power batteries of different test items all need to be installed with the rack in a matching manner, and different power batteries are different in size and installation mode, for example, one part of the batteries are installed on the upper portion of a vehicle body such as a trunk or a seat, and the like (called as top-mounted batteries), and the other part of the batteries are installed on the bottom of the vehicle (called as bottom-mounted batteries).
Disclosure of Invention
The embodiment of the disclosure aims to provide a test system and a test method for a power battery, so as to solve the technical problems that the test system in the prior art cannot be compatible with different test items and is high in cost.
In order to solve the technical problem, the embodiment of the present disclosure adopts the following technical solutions:
a test system for a power cell, comprising:
an environment bin;
the test bed is arranged in the environment bin and comprises a table top;
the battery fixing device is detachably arranged on the table board and comprises two clamping mechanisms which are oppositely arranged at a certain distance, the power battery is arranged between the two clamping mechanisms, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate, the bottom plate and the top plate are oppositely arranged up and down, the vertical plates are arranged between the bottom plate and the top plate and are respectively connected with the bottom plate and the top plate, a first mounting space is formed above the top plate, and a second mounting space is formed between the top plate and the bottom plate so as to fix the power battery from the upper side or the lower side of the top plate.
In some embodiments, the power battery is fixedly connected with the top plate through a first fastener, a first mounting hole for mounting the power battery is formed in the top plate, and a second mounting hole matched with the first mounting hole is formed in the power battery.
In some embodiments, the table top is provided with a plurality of third mounting holes for adjusting the mounting position of the battery fixing device, and the plurality of third mounting holes are arranged in an array on the table top.
In some embodiments, the bottom plate is connected with the vertical plate through a second fastener, a plurality of first connecting holes which are matched with each other are respectively formed in the bottom plate and the vertical plate, and the plurality of first connecting holes are arranged in a staggered manner in the bottom plate and the vertical plate;
the vertical plate is connected with the top plate through a third fastener, a plurality of second connecting holes which are matched with each other are respectively formed in the vertical plate and the top plate, and the second connecting holes are arranged on the vertical plate and the top plate in a staggered mode.
In some embodiments, the bottom plate and the top plate are respectively provided with a hanging ring.
In some embodiments, the bottom plate, the vertical plate and the top plate are made of aluminum or steel.
In some embodiments, a through hole is formed in the table top at a position for mounting the power battery, and a driving device is arranged below the through hole and used for performing a bottom ball-striking or bottom needling test on the power battery.
In some embodiments, the test bed further comprises a base for supporting the table top, the base is arranged around the table top, and the base is of a liftable and/or rotatable structure.
The present disclosure further provides a testing method for a power battery, which is applied to a testing system for a power battery, the testing system for a power battery includes an environmental chamber and a testing platform disposed in the environmental chamber, the testing platform includes a platform surface, and the method includes:
fixing the power battery on the table board through a battery fixing device according to the installation mode of the power battery to be tested, wherein the battery fixing device comprises two clamping mechanisms which are oppositely arranged at a certain distance, the power battery is installed between the two clamping mechanisms, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate, the bottom plate and the top plate are oppositely arranged, the vertical plates are installed between the bottom plate and the top plate and are respectively connected with the bottom plate and the top plate, a first installation space is formed above the top plate, and a second installation space is formed between the top plate and the bottom plate so as to fix the power battery from the upper side or the lower side of the top plate;
configuring a test environment of the power battery in the environment bin;
and inputting corresponding test information to the test bed, and starting the test of the power battery.
In some embodiments, before the power battery is secured to the countertop by a battery securing device, the method further comprises:
and determining the sizes of the bottom plate, the vertical plate and the top plate in the clamping mechanism according to the size and the installation mode of the power battery and the relevant size of the table top.
According to the test system and the test method for the power battery, two opposite clamping mechanisms are arranged on the table board of the test bed at a certain interval, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate which are sequentially connected, different mounting spaces are formed on the upper side and the lower side of each top plate respectively, the power battery can be suspended and fixed above the table board from the upper side or the lower side of each top plate, different projects of the power battery can be tested according to the mounting mode of the power battery on the whole vehicle, different test requirements are met, and the application range of the test is widened; the same set of test system can test different power batteries, has higher universality, and the battery fixing device has simple structure and convenient assembly and disassembly, and can effectively reduce the test cost.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a testing system for a power battery according to an embodiment of the present disclosure;
fig. 2 is a front view of a testing system for a power battery according to an embodiment of the present disclosure;
fig. 3 is a schematic perspective assembly structure diagram of a battery fixing device and a table top in a testing system for a power battery according to an embodiment of the disclosure;
FIG. 4 is an exploded view of the clamping mechanism according to the embodiment of the present disclosure;
FIG. 5 is a front cross-sectional assembly view of the battery holder and table of FIG. 3;
fig. 6 is a schematic perspective assembly structure of the upper battery according to the embodiment of the present disclosure;
FIG. 7 is an exploded view of the assembled battery according to the embodiment of the present disclosure;
fig. 8 is a schematic perspective assembly view of a bottom-mounted battery according to an embodiment of the present disclosure;
FIG. 9 is an assembled exploded view of the bottom-mounted battery of the disclosed embodiment;
fig. 10 is a schematic structural diagram of a power battery according to an embodiment of the present disclosure;
FIG. 11 is a top view of a battery holder and table top of an embodiment of the present disclosure;
FIG. 12 is a front view of a battery holder and counter top of an embodiment of the disclosure;
FIG. 13 is a side view of the upper battery, battery fixture and table top of an embodiment of the present disclosure;
FIG. 14 is a side view of a bottom mounted battery, battery holder and table top of an embodiment of the present disclosure;
fig. 15 is a flowchart of a method for testing a power battery according to an embodiment of the present disclosure.
Reference numerals:
1-an environment bin and 11-an observation port; 2-test bed, 21-table top, 211-third mounting hole and 212-through hole; 3-clamping mechanism, 31-bottom plate, 32-vertical plate, 33-top plate, 34-first mounting hole, 35-hanging ring, 36-fourth mounting hole, 301-first clamping mechanism, 302-second clamping mechanism, 311-first bottom plate, 321-first vertical plate, 331-first top plate, 312-second bottom plate, 322-second vertical plate and 332-second top plate; 41-first fastener, 42-second fastener, 43-third fastener; 51-first connection hole, 52-second connection hole; 6-a drive device; 7-an adjusting mechanism; 20-power battery, 201-second mounting hole, 202-mounting part.
Detailed Description
Various aspects and features of the disclosure are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure are described hereinafter with reference to the drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
Fig. 1 to 9 show a schematic structural diagram of a test system for a power battery according to an embodiment of the present disclosure, and as shown in fig. 1 to 9, a test system for a power battery according to an embodiment of the present disclosure includes:
an environmental chamber 1;
the test bed 2 is arranged in the environmental chamber 1, and the test bed 2 comprises a table top 21;
the battery fixing device is detachably mounted on the table board 21 and comprises two clamping mechanisms 3 which are oppositely arranged at a certain distance, the power battery 20 is mounted between the two clamping mechanisms 3, each clamping mechanism 3 comprises a bottom plate 31, a vertical plate 32 and a top plate 33, the bottom plate 31 and the top plate 33 are oppositely arranged up and down, the vertical plates 32 are mounted between the bottom plate 31 and the top plate 33 and are respectively connected with the bottom plate 31 and the top plate 33, a first mounting space is formed above the top plate 33, and a second mounting space is formed between the top plate 33 and the bottom plate 31 so as to fix the power battery 20 from the upper side or the lower side of the top plate 33.
The power battery 20 may be an upper battery or a lower battery, the test bed 2 may be a vibration bed, and the power battery 20 may be fixed on the table 21 by the battery fixing device and may be subjected to a vibration test on the power battery 20.
According to the power battery testing system provided by the embodiment of the disclosure, two opposite clamping mechanisms 3 are arranged on the table top 21 of the test bed 2 at a certain distance, each clamping mechanism 3 comprises a bottom plate 31, a vertical plate 32 and a top plate 33 which are sequentially connected, different mounting spaces are respectively formed at the upper side and the lower side of each top plate 33, the power battery 20 can be suspended and fixed above the table top 21 from the upper side or the lower side of each top plate 31, different items of testing can be performed on the power battery 20 according to the mounting mode of the power battery 20 on the whole vehicle, different testing requirements are met, and the application range of the testing is improved; the same set of test system can test different power batteries 20 (the same test system is compatible with different test items), the universality is higher, the battery fixing device is simple in structure and convenient to disassemble and assemble, and the test cost can be effectively reduced.
The vertical plate 32 is vertically installed on the bottom plate 31, one side of the top plate 33 is fixedly connected with the top of the vertical plate 32, and the other side of the top plate 33 is used for being connected with the power battery 20. A second mounting space having an opening is formed between the other side of the top plate 33 and the bottom plate 31 so that the bottom mounted battery is mounted to the top plate 33 from the bottom of the other side of the top plate 33.
Particularly, in this embodiment, the first top plate 331 and the second top plate 332 which are symmetrically arranged left and right are designed to match with the battery car-linking point support, so as to meet the actual test requirement and improve the test effect.
In some embodiments, as shown in fig. 6 to 9, the power battery 20 is fixedly connected to the top plate 33 by a first fastener 41, the top plate 33 is provided with a first mounting hole 34 for mounting the power battery 20, and the power battery 20 is provided with a second mounting hole 201 matching with the first mounting hole 34.
Specifically, the clamping mechanism 3 includes a first clamping mechanism 301 and a second clamping mechanism 302 which are arranged bilaterally symmetrically, the first clamping mechanism 301 includes a first bottom plate 311, a first upright plate 321, and a first top plate 331, and the second clamping mechanism 302 includes a second bottom plate 312, a second upright plate 322, and a second top plate 332. The left side and the right side of the power battery 20 are respectively provided with a mounting part 202, the mounting part 302 is provided with a second mounting hole 201, the second mounting holes 201 arranged on the left side and the right side are aligned with the first mounting holes 34 on the first top plate 331 and the second top plate 332, and then the first fastener 41 passes through the first mounting holes 34 and the second mounting holes 201 to fixedly connect the power battery 20 with the top plate 33, so that the power battery 20 is fixed above the table board 21.
The first fastening member 41 is preferably a fastening bolt, and the first mounting hole 34 and the second mounting hole 201 are bolt holes. In particular, the first mounting hole 34 and the second mounting hole 201 are provided as through holes that penetrate vertically in order to facilitate mounting of the power battery 20 in different mounting manners.
In this embodiment, the top plate 33 is provided with the first mounting hole 34, and the two sides of the power battery 20 are provided with the second mounting holes 201 matched with the first mounting hole 34, so that the power battery 20 and the top plate 33 are connected by the first fastening piece 41, and the connection is reliable, the disassembly and the assembly are convenient, and the disassembly and the assembly of the power battery 20 are convenient; meanwhile, a second installation space can be formed by matching the bottom plate 31 and the vertical plate 32, so that the installation of the bottom-mounted battery is facilitated, and the application range of the battery fixing device is widened.
Optionally, the first mounting hole 34 and the second mounting hole 201 are both multiple, so as to ensure the reliability of the connection. For example, the first mounting holes 34 are three mounting holes arranged in the same row, and the second mounting holes 201 are five mounting holes arranged in the same row.
The first mounting holes 34 and the second mounting holes 201 are different in number, so that the power battery 20 can be moved as required, and different test position requirements of a user can be met.
In some embodiments, as shown in fig. 4 and 5, the bottom plate 31 is connected to the vertical plate 32 by a second fastening member 42, a plurality of first connection holes 51 are respectively formed in the bottom plate 31 and the vertical plate 32, and the plurality of first connection holes 51 are arranged in a staggered manner on the bottom plate 31 and the vertical plate 32;
the upright plate 32 is connected with the top plate 33 through a third fastening member 43, a plurality of second connecting holes 52 which are matched with each other are respectively formed on the upright plate 32 and the top plate 33, and the plurality of second connecting holes 52 are arranged on the upright plate 32 and the top plate 33 in a staggered manner.
Between bottom plate 31 and riser 32 to and all pass through fastener (for example connecting bolt) fixed connection between riser 32 and the roof 33, compare in welded mode, rigidity is enough, and the mode is high, be difficult for with battery resonance, can reduce the influence to the vibration test result, and can solve when welding the welding seam many, the inconvenient problem of processing that causes.
In this embodiment, the connection holes are arranged in a staggered manner (not in a straight line) on the bottom plate 31, the vertical plate 32 and the top plate 33, so that the connection strength among the components and the stability of the overall structure of the clamping mechanism 3 can be improved.
The arrangement of the first connecting holes 51 on the bottom plate 31 and the vertical plate 32 may be the same as or different from the arrangement of the second connecting holes 52 on the vertical plate 32 and the top plate 33. The first and second connection holes 51 and 52 are preferably countersunk to facilitate assembly.
In this embodiment, the arrangement of the first connection holes 51 and the second connection holes 52 is set to be the same, so that the processing is convenient, and the processing cost can be reduced.
In some embodiments, the bottom plate 31, the vertical plate 32 and the top plate 33 are made of aluminum or steel, and have sufficient rigidity and high modal strength compared with sheet metal parts and the like, and the overall structural strength is high after connection, so that resonance with a battery can be reduced, interference on a vibration test result is reduced, and the processing is convenient.
In addition, the clamping mechanism 3 in the present embodiment is entirely made of a plate-like member, and has a higher structural strength than a tubular member or the like, and the rigidity of the clamping mechanism 3 can be further improved.
The bottom plate 31 and the top plate 33 are horizontally disposed and have a thickness d 1 Preferably 40mm; the vertical plate 32 is vertically disposed and has a thickness d for ensuring its supporting strength 2 Preferably 80mm.
Width (K) of the bottom plate 31 1 ) Greater than the width (K) of the top plate 33 2 ) To provide sufficient support strength to ensure stable and reliable support of the bottom plate 31.
In some embodiments, the bottom plate 31 and the top plate 33 are respectively provided with a hanging ring 35 for facilitating disassembly and assembly, the hanging ring 35 arranged on the bottom plate 31 is positioned outside the top plate 33 to prevent the top plate 33 from shielding the hanging ring 35 on the bottom plate 31, and the power battery 20 connected with the battery fixing device into a whole can be directly disassembled and assembled through the hanging ring 35 arranged on the bottom plate 31.
In some embodiments, as shown in fig. 1, 3, and 6 to 9, a plurality of third mounting holes 211 are formed on the table 21 to adjust the mounting position of the battery fixing device, and the plurality of third mounting holes 211 are arranged in an array on the table 21.
As shown in fig. 6 to 9, a fourth mounting hole 36 is formed on the bottom plate 31 to match with the third mounting hole 211, and a fourth fastener (not shown) passes through the fourth mounting hole 36 and the third mounting hole 211 to fix the battery fixing device on the table 21.
The third mounting holes 211 are arranged in a matrix array in multiple rows and columns, and two clamping mechanisms 3 of the battery fixing device can be mounted at corresponding positions on the table top 21 as required, so that the battery fixing device is suitable for power batteries 20 of different sizes, and the application range of the test system is widened.
In some embodiments, as shown in fig. 1, a through hole 212 is formed in the table top 21 at a position for mounting the power battery 20, a driving device 6 is disposed below the through hole 212, and the driving device 6 can pass through the through hole 212 from below the power battery 20 to perform a bottom ball-impact or bottom needle-impact test on the power battery 20, so as to improve a test item range of the power battery 20.
In some embodiments, as shown in fig. 1 and 2, the test bed 2 further includes a base 22 for supporting the table 21, the base 22 is disposed around the lower portion of the table 21, and the base 22 is a liftable and/or rotatable structure.
The base 22 is arranged around the lower part of the table-board 21, so that the support is stable and reliable, and the driving device 6 is convenient to install and use. Meanwhile, the base 22 is arranged to be a liftable and/or rotatable structure, so that the installation height and/or the installation angle of the power battery 20 can be adjusted conveniently according to needs, and the power battery 20 can be tested conveniently through the lifting and/or the rotation of the base 22.
In some embodiments, an adjusting mechanism 7 for adjusting the environment in the environmental chamber 1 is disposed in the environmental chamber 1, and the adjusting mechanism 7 includes at least one of a temperature adjuster, a humidity adjuster, and a salt spray adjuster. The temperature and humidity of the environmental chamber 1, salt fog, road spectrum conditions and the like can be adjusted through the adjusting mechanism 7, and different environmental conditions are simulated to test the power battery 20. For example, the structural performance variation parameters of the power battery 20 during driving under extreme conditions such as severe cold mountain areas, middle east high humidity coastal areas and the like can be simulated and tested, and the structural performance variation parameters of the power battery 20 during driving in various urban areas and rural areas in different seasons under conventional conditions can also be simulated, so that the design and development of the power battery are fully prepared.
In some embodiments, as shown in fig. 1, the environmental chamber 1 has a square structure with one side open, which facilitates the installation of the test bed 2 and the power battery 20. The side wall of the environmental chamber 1 is provided with an observation port 11 for observing the condition of the power battery 20 in the environmental chamber 1, so that a user can observe the condition conveniently.
The environment bin 1 is also internally provided with a camera which can monitor the test condition of the power battery 20 in real time, and can adjust the test environment in real time through the adjusting mechanism 7 and acquire and output test results.
The test system that this disclosed embodiment provided can simulate multiple driving environment through same set of test system and test power battery 20, need not to design different test systems to different test items, need not to remove power battery 20 and in order to match the installation with different stands, labour saving and time saving, and the cost is lower, can guarantee the accuracy of test result simultaneously.
Fig. 15 shows a flow chart of a testing method for a power battery according to an embodiment of the present disclosure, and as shown in fig. 15, an embodiment of the present disclosure further provides a testing method for a power battery, which is applied to a testing system for a power battery, where the testing system for a power battery includes an environmental chamber 1 and a test bed 2 disposed in the environmental chamber 1, the test bed 2 includes a table 21, and the method includes:
s1: fixing the power battery 20 on the table top 21 through a battery fixing device according to the installation mode of the power battery 20 to be tested, wherein the battery fixing device comprises two clamping mechanisms 3 which are oppositely arranged at a certain distance, the power battery 20 is installed between the two clamping mechanisms 3, each clamping mechanism 3 comprises a bottom plate 31, a vertical plate 32 and a top plate 33, the bottom plate 31 and the top plate 33 are oppositely arranged up and down, the vertical plate 32 is installed between the bottom plate 31 and the top plate 33 and is respectively connected with the bottom plate 31 and the top plate 33, a first installation space is formed above the top plate 33, and a second installation space is formed between the top plate 33 and the bottom plate 31 so as to fix the power battery 20 from the upper side or the lower side of the top plate 33;
s2: configuring a test environment of the power battery 20 in the environment bin 1;
s3: inputting corresponding test information to the test bed 2, and starting the test of the power battery 20.
Specifically, in step S1, the power battery 20 is fixed on the table 11 by the battery fixing device before the test. As shown in fig. 6 and 7, if the power battery 20 is an upper battery, the bottom plate 31 may be fixedly connected to the upright plate 32 through a plurality of second fasteners 42, and a plurality of hanging rings 35 (e.g., four) are installed on the bottom plate 31 through bolts, then the bottom plate 31 with the upright plate 32 installed thereon and a plurality of fourth fasteners are fixedly connected to the table top 21, then a plurality of hanging rings 35 (e.g., two) are installed on the top plate 33 through bolts, and the top plate 33 is fixedly connected to the upright plate 32 through a plurality of third fasteners 43, and finally the upper battery is installed on the top plate 33 through a first fastener 41, so as to implement the installation of the upper battery. Namely, the two symmetrically arranged clamping mechanisms 3 are firstly installed on the table board 21, and then the power battery 20 is installed. As shown in fig. 8 and 9, if the power battery 20 is a bottom-mounted battery, the bottom plate 31 may be fixedly connected to the upright plate 32 by a plurality of second fasteners 42, and a plurality of hanging rings 35 (e.g., four) are mounted on the bottom plate 31 by bolts, then the bottom plate 31 with the upright plate 32 mounted thereon and a plurality of fourth fasteners are fixedly connected to the table top 21, then a plurality of hanging rings 35 (e.g., two) are mounted on the top plate 33 by bolts, and the bottom-mounted battery is fixedly connected to the two top plates 33 by the first fasteners 41, and then the top plate 33 with the bottom-mounted battery mounted thereon is connected to the two upright plates 32 by the third fasteners 43, so as to mount the bottom-mounted battery. That is, when mounting, the bottom plate 31 and the upright plate 32 are first mounted on the table top 21, the bottom battery is mounted on the bottom of the top plate 33, and then the top plate 33 and the upright plate 32 are fixedly connected.
After the power battery 20 is installed, testing environments such as temperature, humidity, salt fog and the like are configured for the power battery in the environmental chamber 1 through the step S2. After the test environment is configured, test information such as road spectrum information is input into the test bed 2 through the step S3, and the test bed is connected with a signal acquisition system to perform bench test on the power battery 20.
The testing method provided by the embodiment of the disclosure adopts different mounting modes to fix the power battery 20 on the table board 21 through the battery fixing device according to the mounting mode of the power battery 20 to be tested on the whole vehicle, and configures different testing environments in the environment bin 1 according to testing requirements, so as to test the power battery 20, and can carry out diversified tests on different power batteries 20, thereby satisfying different testing condition requirements, improving testing convenience, reducing actions such as movement of the power battery 20 in the testing process, saving time and labor, and effectively reducing testing cost.
In some embodiments, before the power battery 20 is fixed on the table 21 by the battery fixing device in step S1, the method further includes:
s0: the sizes of the bottom plate 31, the upright plate 32 and the top plate 33 in the clamping mechanism 3 are determined according to the size and the installation mode of the power battery 20 and the relevant size of the table top 21.
Namely, before the power battery 20 is installed, the clamping mechanism 3 is determined in size and manufactured, and the clamping mechanism 3 is only required to be structurally designed and manufactured, so that the testing system can be suitable for power batteries 20 with different sizes.
Specifically, as shown in fig. 10 to 14, the thickness d of the bottom plate 31 and the top plate 33 1 Predetermined, for example, set to 40mm in the present embodiment; thickness d of the standing plate 32 2 Also in advanceIt is determined, for example, to be set to 80mm in the present embodiment. The relevant dimensions of the table 21 are the lateral spacing and the longitudinal spacing between two adjacent third mounting holes 211.
It is known that the diameter of the third mounting hole 211 formed on the table 21 is a, and the transverse distance between two adjacent third mounting holes 211 is t 1 The longitudinal distance between two adjacent third mounting holes 211 is t 2 (ii) a The distance between the two second mounting holes 201 on the left and right sides of the power battery 20 is L 1 Among the plurality of second mounting holes 201 arranged on the same mounting portion 202 of the power battery 20, the distance between the two farthest second mounting holes 201 on the same center line is L 2 。
As shown in fig. 11, the bottom plate 31, the upright plate 32, and the top plate 33 all have a length T, and T =2T 3 +t 2 ×N 1 ；
Width K of bottom plate 31 1 ＝2t 4 +t 1 ×N 2 ；
Wherein t3 is the longitudinal margin of the fourth mounting hole 36 on the bottom plate 31 from the edge of the bottom plate 31, and satisfies the formula
t 4 The lateral distance between the fourth mounting hole 36 formed on the bottom plate 31 and the edge of the bottom plate 31 satisfies the formula
A is the diameter of the third mounting hole 211 formed in the table 21, and N is 1 ＝[L 2 /t 2 ]+2，[]Is the operator of rounding; n is a radical of hydrogen 2 ＝[L 1 /t 1 ]+2; delta is the machining safety margin, preferably 8mm.
It can be understood that the longitudinal distance t between two adjacent third mounting holes 211 arranged on the table top 21 2 The longitudinal distance between two adjacent fourth mounting holes 36 on the bottom plate 31 is the same, so the length of the bottom plate 31 can be calculated based on the transverse distance and the longitudinal distance between the adjacent third mounting holes 211 in the power battery 20(including the length of riser 32 and top plate 33) and the width of bottom plate 31.
As shown in fig. 11 and 12, according to formula 2K 2 +S 1 -d 2 ＝S 2 -K 1 The following can be obtained:
width K of top plate 33 2 ＝(S 2 -K 1 -S 1 +d 2 )/2；
Wherein S is 1 Is the closest distance between the left and right top plates 33, and satisfies S 1 ＝L 1 -2b 1 ，b 1 A transverse margin between a first mounting hole 34 formed in the top plate 33 and an edge of the top plate 33 adjacent to the first mounting hole 34, b 1 = (B/2) + δ, B being the diameter of the first mounting hole 34, δ being the machining safety margin, preferably 8mm;
S 2 is the farthest distance between the two bottom plates 31, satisfies S 2 -2t 4 ＝t 1 ×N 2 ，N 2 ＝[L 1 /t 1 ]+2。
1) As shown in fig. 12 and 13, when the power battery 20 is an upper battery:
according to the formula H = H 4 -2d 1 ，H 4 ＝H 1 +h 1 It can be seen that the height H = H of the vertical plate 32 1 +h 1 -2d 1 Wherein H is 1 The distance between the lower part of the power battery and the bottom surface of the battery is defined as the distance; h is a total of 1 The safe distance between the bottom surface of the power battery and the test bed table surface 21 meets the condition that h is more than or equal to 15 1 Less than or equal to 150, and the specific numerical value is determined according to the actual condition.
2) As shown in fig. 12 and 14, when the power battery 20 is a bottom-mounted battery:
according to the formula H = H 3 -d 1 ，H 3 ＝H 2 +h 1 It can be seen that the height H = H of the vertical plate 32 2 +h 1 -d 1 Wherein H is 2 The distance between the upper part of the power battery and the bottom surface of the battery is defined as the distance; h is 1 The safe distance between the bottom surface of the power battery and the test bed table surface 21 meets the condition that h is more than or equal to 15 1 Less than or equal to 150, and the specific numerical value is determined according to the actual condition.
3) When the power battery 20 simultaneously satisfies the conditions of the upper battery and the lower battery:
height H = H of the vertical plate 32 1 +h 1 -2d 1 Wherein h is 1 H is more than or equal to 15 1 Not less than 150 and not more than 15 hours 1 -d 1 ≤150。d 1 At 40mm, 55 is less than or equal to h 1 ≤150。
In specific implementation, the sizes of the bottom plate 31, the upright plate 32 and the top plate 33 can be designed according to other relevant sizes such as the overall length and width of the table top 21, so as to meet different requirements of the power battery 20 and different test heights (the distance between different train planes and the bottom plane of the battery).
In the testing method provided by the embodiment of the disclosure, before the power battery 20 is installed and fixed, the length T and the width K of the bottom plate 31 can be determined according to the size and the installation manner of the power battery 20 and the relevant size of the table 21 1 The length T and height H of the vertical plate 32, and the length T and width K of the top plate 33 1 The size design is carried out, a complex structure is not required to be arranged, the clamping mechanism 3 which is simple in process and convenient to process can be arranged, the test requirements of the power batteries 20 with different sizes and installation modes are met, and the application range of the test is widened.
The structure of the test system in the test method for the power battery provided by the embodiment of the present disclosure corresponds to the test system for the power battery in the above embodiment, and any optional item in the test system embodiment for the power battery is also applicable to the embodiment of the test method for the power battery, and is not described herein again.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other embodiments in which any combination of the features described above or their equivalents does not depart from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Although the present disclosure has been described in detail with reference to the specific embodiments, those skilled in the art will be able to make various modifications and alterations to the embodiments based on the concept of the present disclosure, and such modifications and alterations should fall within the scope of the present disclosure.
Claims (10)
1. A test system for a power battery is characterized by comprising:
an environment bin;
the test bed is arranged in the environment bin and comprises a table top;
the battery fixing device is detachably arranged on the table board and comprises two clamping mechanisms which are oppositely arranged at a certain distance, the power battery is arranged between the two clamping mechanisms, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate, the bottom plate and the top plate are oppositely arranged up and down, the vertical plates are arranged between the bottom plate and the top plate and are respectively connected with the bottom plate and the top plate, a first mounting space is formed above the top plate, and a second mounting space is formed between the top plate and the bottom plate so as to fix the power battery from the upper side or the lower side of the top plate.
2. The power battery testing system according to claim 1, wherein the power battery is fixedly connected with the top plate through a first fastener, a first mounting hole for mounting the power battery is formed in the top plate, and a second mounting hole matched with the first mounting hole is formed in the power battery.
3. The power battery testing system of claim 1, wherein the table top is provided with a plurality of third mounting holes for adjusting the mounting positions of the battery fixing devices, and the plurality of third mounting holes are arranged in an array on the table top.
4. The power battery testing system according to claim 1, wherein the bottom plate is connected with the vertical plate through a second fastener, a plurality of first connecting holes which are matched with each other are respectively formed in the bottom plate and the vertical plate, and the plurality of first connecting holes are arranged in a staggered manner in the bottom plate and the vertical plate;
the vertical plate is connected with the top plate through a third fastener, a plurality of second connecting holes which are matched with each other are respectively formed in the vertical plate and the top plate, and the second connecting holes are arranged on the vertical plate and the top plate in a staggered mode.
5. The power battery testing system of claim 1, wherein the bottom plate and the top plate are respectively provided with a hanging ring.
6. The power battery testing system according to any one of claims 1 to 5, wherein the bottom plate, the vertical plate and the top plate are made of aluminum or steel.
7. The power battery testing system according to any one of claims 1 to 5, wherein a through hole is formed in a position on the table top for mounting the power battery, and a driving device is arranged below the through hole and used for performing a bottom ball-hitting or bottom needling test on the power battery.
8. The power battery testing system according to any one of claims 1 to 5, wherein the test stand further comprises a base for supporting the table top, the base is arranged around the table top, and the base is of a liftable and/or rotatable structure.
9. A testing method of a power battery is applied to a testing system of the power battery, and is characterized in that the testing system of the power battery comprises an environment bin and a test bed arranged in the environment bin, the test bed comprises a table board, and the method comprises the following steps:
fixing the power battery on the table board through a battery fixing device according to the installation mode of the power battery to be tested, wherein the battery fixing device comprises two clamping mechanisms which are oppositely arranged at a certain distance, the power battery is installed between the two clamping mechanisms, each clamping mechanism comprises a bottom plate, a vertical plate and a top plate, the bottom plate and the top plate are oppositely arranged, the vertical plates are installed between the bottom plate and the top plate and are respectively connected with the bottom plate and the top plate, a first installation space is formed above the top plate, and a second installation space is formed between the top plate and the bottom plate so as to fix the power battery from the upper side or the lower side of the top plate;
configuring a test environment of the power battery in the environment bin;
and inputting corresponding test information to the test bed, and starting the test of the power battery.
10. The method for testing a power battery of claim 9, wherein before the power battery is fixed on the table by a battery fixing device, the method further comprises:
and determining the sizes of the bottom plate, the vertical plate and the top plate in the clamping mechanism according to the size and the installation mode of the power battery and the relevant size of the table top.
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