End plate structure of battery module

Abstract

The utility model belongs to the technical field of electric automobile batteries, and discloses an end plate structure of a battery module. The end plate comprises an end plate seat, an end plate and a cover plate, and the end plate seat is made of aluminum alloy and can be welded with a battery module to fix the position of the battery module so as to bear vibration generated during running of an electric automobile. And the connecting piece welded with the battery cell is fixed on the mounting station on the end plate through the two fixing bolts and is connected with other connecting pieces, so that the position of the connecting piece welded with the battery cell cannot be moved when the fixing bolts are screwed, and unsoldering is avoided. Two threaded holes are formed in the mounting station of the end plate, the connecting area is increased during connection corresponding to two fixing bolts and connecting pieces, the connecting safety coefficient is increased through the two bolts, the end plate and the cover plate are made of V0-level flame-retardant ABS materials and are made of insulating materials, the safety coefficient is increased during manual mounting, battery pack modules are all connected through the end plates, the appearance is attractive, mounting is simple, and the cost is low. Operation is convenient, insulation treatment is not needed after installation, and installation time is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile battery technology field especially relates to a kind of end plate structure of battery module. BACKGROUND

[0002] Battery module is a key intermediate level component in the battery system of electric vehicle. It is assembled by multiple battery cells through series or parallel connection to provide higher voltage and capacity. In the prior art, copper-aluminum composite sheet is generally welded at the battery cell. The copper-aluminum composite sheet is also called connecting sheet. A hole is opened on the connecting sheet to realize connection with other connecting sheets through bolts. However, the electric vehicle will vibrate when driving. The position of the other end of the connecting sheet welded with the battery cell is not fixed, which can easily cause the loosening of the bolt. In addition, the connecting sheet will be moved when tightening the bolt, which can cause the disconnection between the connecting sheet and the battery cell. SUMMARY

[0003] The utility model aims to provide an end plate structure of battery module, which has the effect of fixing the position of the connecting sheet and preventing the disconnection between the connecting sheet and the battery cell when tightening the bolt.

[0004] The above technical purpose of the utility model is achieved by the following technical solution: an end plate structure of battery module, which comprises an end plate seat, an end plate and a cover plate. The end plate seat is made of metal material. The end plate is formed with a mounting station. The mounting station is provided with a plurality of threaded holes. The cover plate is mounted and fixed on the end plate. An extension opening is formed between the cover plate and the end plate for the connecting sheet to extend into the mounting station.

[0005] By using the above technical solution, the end plate seat is made of metal material, which is directly welded with the battery module. The end plate is mounted and fixed on the end plate seat to fix the position of the end plate. The connecting sheet welded with the battery cell extends from the extension opening into the mounting station and is attached to the mounting station. Other connecting sheets extend from the extension opening into the mounting station and are attached to the surface of the connecting sheet welded with the battery cell. All connecting sheets are provided with through holes. The fixing bolt is threadedly connected in the threaded hole after passing through the through holes of all connecting sheets. Since the connecting sheet welded with the battery cell is attached to the mounting station of the end plate, the connecting sheet welded with the battery cell will not be moved during the process of tightening the fixing bolt, which can prevent disconnection. Since the end plate seat is welded and fixed on the battery module, the position of the end plate seat and the end plate is fixed. The connecting sheet welded with the battery cell is welded with the battery cell at one end and is fixed in the mounting station of the end plate at the other end. The position is fixed. The vibration generated during the driving process of the electric vehicle will not cause the connecting sheet welded with the battery cell to shake relative to the battery module and cause the loosening of the fixing bolt.

[0006] The utility model is further provided as follows: the end plate seat and the end plate are fixed through a plurality of elastic pins.

[0007] By adopting the technical scheme, the end plate seat and the end plate are fixed through the elastic pin, the manufacturing cost is low, and the stability is better than that of the buckle connection.

[0008] The utility model discloses further provide that: the end plate seat is set with the positioning groove, the end plate is formed with the positioning table, and the positioning table is embedded in the positioning groove.

[0009] By adopting the technical scheme, the positioning table is embedded in the positioning groove, so that the connection between the end plate seat and the end plate is more stable.

[0010] The utility model discloses further provide that: the end plate seat is set with a plurality of pin holes one, the positioning table is set with a plurality of pin holes two, and the elastic pin passes the pin hole one, the pin hole two in proper order.

[0011] The utility model discloses further provide that: the number of threaded holes is two or more than two.

[0012] By adopting the technical scheme, the connecting piece welded on the battery cell in the prior art only needs one fixing bolt when connecting with other connecting pieces, and the contact area is too small. The number of threaded holes and the corresponding number of fixing bolts of the utility model are preferably two, which increases the connection area and the connection safety factor. At the same time, the number of threaded holes and the number of fixing bolts can also be more than two.

[0013] The utility model discloses further provide that: the extension inlet includes two inlet one located at both ends of the installation station and / or inlet two located at the connecting place of the end plate and the cover plate.

[0014] By adopting the technical scheme, the connecting piece welded with the battery cell can extend from the inlet two, and other connecting pieces can extend from the inlet one.

[0015] The utility model discloses further provide that: the end plate seat material is aluminum alloy.

[0016] The utility model discloses further provide that: the end plate and / or the cover plate material is flame -retardant ABS material.

[0017] By adopting the technical scheme, in the prior art, the staff directly connects multiple connecting pieces, needs to contact the non-insulated position, and is easy to be electrically injured. The end plate and the cover plate of the utility model are made of flame -retardant ABS material, preferably V0 grade flame -retardant ABS material, which is an insulating material. When installing manually, the human body does not need to directly contact the live position, and the safety factor is improved during installation.

[0018] The further setting of the utility model is that the end plate is formed with a plurality of cylindrical pins, the cover plate is provided with a plurality of pin holes three, the plurality of cylindrical pins correspond to the plurality of pin holes three, the cylindrical pins are inserted into the pin holes three, and the cylindrical pins and the pin holes three are fixed through tight fit.

[0019] The utility model discloses beneficial effect is: the utility model discloses including end plate seat, end plate, cover plate, end plate seat material is aluminum alloy, can be welded with battery module, fixes its position to bear the vibration that electric automobile vehicle travels produces. End plate is fixed with end plate seat through elastic pin, and the connecting piece welded with electric core is fixed on the mounting station on end plate through two fixed bolts and can be connected with other connecting pieces, and when the fixed bolt is screwed, the connecting piece welded with electric core will not move position, and will not produce the off welding. The mounting station of end plate is equipped with two threaded holes, and two fixed bolts are corresponded, and the connecting piece increases the connecting area when connecting, and two bolts increase the connection safety factor, and the material of end plate, cover plate is all V0 grade flame retardant ABS material, and is insulating material, and the safety factor is improved when artificial installation, and human body will not contact the connecting position with electricity, and the battery pack module is all connected with end plate and is beautiful, and when installing, it is simple, and convenient to operate, and after installing, it is not necessary to do insulation treatment and saves installation working hours. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the structural schematic diagram of the utility model.

[0021] Fig. 2 It is the separated state schematic diagram between end plate seat, end plate and cover plate of the utility model.

[0022] In the drawing, 1, end plate seat;11, pin hole one;12, positioning groove;2, end plate;21, positioning table;22, pin hole two;23, cylindrical pin;3, cover plate;31, pin hole three;4, mounting station;5, entrance;51, entrance one;52, entrance two;6, threaded hole. SPECIFIC EMBODIMENT

[0023] Embodiment: a kind of end plate structure of battery module, as shown in Figs. 1-2 Shown, including end plate seat 1, end plate 2, cover plate 3, end plate seat 1 material is aluminum alloy material, end plate seat 1 is used to be welded on battery module. End plate seat 1 is formed with positioning groove 12, and end plate 2 is formed with positioning table 21, and positioning table 21 is embedded in positioning groove 12. End plate seat 1 is provided with a plurality of pin holes one 11, and positioning table 21 is provided with a plurality of pin holes two 22, and a plurality of elastic pins are arranged between end plate seat 1 and end plate 2, and the elastic pins pass through pin hole one 11 and pin hole two 22 in sequence, to realize the fixation of end plate 2 and end plate seat 1.

[0024] The material of the end plate 2 and the cover plate 3 is V0 grade flame-retardant ABS material, the end plate 2 is formed with four cylindrical pins 23, the cover plate 3 is formed with four pin holes 31, the four cylindrical pins 23 are respectively inserted into the four pin holes 31, the cylindrical pins 23 and the pin holes 31 are in tight fit, so as to fix the cover plate 3 and the end plate 2.

[0025] The end plate 2 is formed with an installation station 4, the installation station 4 is formed with two threaded holes 6, the threaded holes 6 are used for fixing bolts. The cover plate 3 and the end plate 2 form an extension entrance 5 for the connecting pieces to extend into the installation station 4, the extension entrance 5 includes two entrance one 51 located at both ends of the installation station 4 and an entrance two 52 located at the connection between the end plate 2 and the cover plate 3, the connecting pieces welded with the battery cell extend into the installation station 4 from the entrance two 52, and the other connecting pieces extend into the installation station 4 from the entrance one 51.

[0026] Working principle: the connecting pieces welded with the battery cell extend into the installation station 4 from the entrance two 52 and are close to the installation station 4, the installation station 4 is formed with two through holes and is respectively aligned with the two threaded holes 6. The other connecting pieces extend into the installation station 4 from the entrance one 51 and are close to the surface of the connecting pieces welded with the battery cell, the other connecting pieces are also formed with two through holes and are aligned with the two threaded holes 6. Two fixing bolts are respectively threaded through the two through holes on the connecting pieces and are screwed into the two threaded holes 6, the two fixing bolts are screwed, so as to fix the position of the connecting pieces and connect all the connecting pieces.

Claims

1. An end plate structure of a battery module, characterized by: The utility model provides an end plate seat (1), end plate (2), apron (3), the end plate seat (1) is metal material, the end plate (2) is formed with installation station (4), the installation station (4) is opened with a plurality of threaded holes (6), the apron (3) is installed and fixed on the end plate (2), the apron (3) and the end plate (2) between form the access (5) that the connecting piece extends into the installation station (4) with.

2. A battery module end plate (2) structure according to claim 1, characterized in that: The end plate seat (1) and the end plate (2) are fixed through a plurality of elastic pins.

3. A battery module end plate (2) structure according to claim 2, characterized in that: The end plate seat (1) is provided with a positioning groove (12), and the end plate (2) is formed with a positioning table (21), and the positioning table (21) is embedded in the positioning groove (12).

4. A battery module end plate (2) structure according to claim 3, characterized in that: The end plate seat (1) is provided with a plurality of pin holes one (11), and the positioning table (21) is provided with a plurality of pin holes two (22), and the elastic pin passes through the pin hole one (11) and the pin hole two (22) in sequence.

5. A battery module end plate (2) structure according to any one of claims 1-4, characterized in that: The threaded hole (6) is two or more than two.

6. A battery module end plate (2) structure according to any one of claims 1-4, characterized in that: The access (5) includes two access one (51) at both ends of the installation station (4) and / or access two (52) at the connecting place of the end plate (2) and the apron (3).

7. A battery module end plate (2) structure according to any one of claims 1-4, characterized in that: The end plate seat (1) is made of aluminum alloy.

8. A battery module end plate (2) structure according to any one of claims 1-4, characterized in that: The end plate (2) and / or the apron (3) are made of flame-retardant ABS material.

9. A battery module end plate (2) structure according to any one of claims 1-4, characterized in that: The end plate (2) is formed with a plurality of cylindrical pins (23), the apron (3) is provided with a plurality of pin holes three (31), a plurality of the cylindrical pins (23) correspond to a plurality of the pin holes three (31), the cylindrical pin (23) is inserted into the pin hole three (31), and the cylindrical pin (23) and the pin hole three (31) are fixed through tight fit.

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