CN210837862U

CN210837862U - Battery pack and battery system

Info

Publication number: CN210837862U
Application number: CN201921953299.7U
Authority: CN
Inventors: 古惠南; 周青华
Original assignee: Guangzhou Automobile New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-06-23
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a battery package and battery system because first mount table is the protruding formation of mounting surface, consequently, the first mount table of this scheme and lug structure as an organic whole close the car in-process, need not to carry out machining such as welding in earlier stage, polishing with first mount table and lug structure, have simplified the process of closing the car greatly, have improved the efficiency of closing the car of battery package. Simultaneously, because the machinery processing such as need not to weld, polish to the lug structure before closing the car in the stage, consequently, effectively avoid the lug structure to take place thermal deformation because of machinery processing such as welding, polish for first mount table is structural at the lug and remains stable. And because the side surface of the first mounting platform is matched with the vehicle closing surface of the vehicle body, the side surface of the first mounting platform is always kept consistent with the vehicle closing surface of the vehicle body in the vehicle closing process, and therefore the vehicle closing precision of the battery pack is effectively improved.

Description

Battery pack and battery system

Technical Field

The utility model relates to a battery equipment technical field especially relates to a battery package and battery system.

Background

With the increasing maturity of new energy technology, new energy automobiles gradually enter the public vision. The new energy automobile is an automobile which adopts non-traditional fuel as a power source, integrates the power control and driving technologies of the automobile and forms a new technology and a new structure. The main core technology of the new energy automobile lies in a battery module, and the safety and the stability of the battery module directly determine the performance of the whole automobile.

The safety and the stability of the battery module depend on the structural quality and the installation mode of the battery pack, the traditional installation mode of the battery pack usually adopts lifting lugs, and the battery pack provided with the battery module is installed on a vehicle body through the lifting lugs; and then the lifting lug is fixed on the vehicle body through a bolt so as to complete the vehicle closing operation. In the process of closing the vehicle, in order to ensure that the lifting lug is matched with the vehicle body and improve the flatness of the mounting point, a bush is usually added on the lifting lug. However, in the process of using the bushing vehicle, the bushing needs to be subjected to a plurality of machining processes such as welding and polishing in the early stage, so that the battery inclusion vehicle process becomes complicated, and the battery inclusion vehicle efficiency is seriously reduced; meanwhile, the mounting point of the lifting lug is thermally deformed due to heat generated by welding, grinding and other machining processes, and the flatness of the mounting point of the lifting lug can not be guaranteed to be consistent with that of a vehicle body, so that the vehicle closing precision of the battery pack is reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, a battery pack and a battery system are needed to be provided, which simplify the closing process and improve the closing efficiency; meanwhile, the flatness consistency between the car closing installation positions is guaranteed, and the car closing precision is improved.

The technical scheme is as follows:

a battery pack, comprising: a battery case; the lifting lug structure is arranged on the battery shell, an installation face is arranged on the lifting lug structure, a first installation platform is formed by protruding the installation face outwards, one side face, back to the installation face, of the first installation platform is used for being matched with a vehicle closing face of a vehicle body, a first installation through hole is formed in the lifting lug structure, and the first installation through hole penetrates through the first installation platform.

In the battery pack, the mounting surface of the lifting lug structure protrudes outwards to form a first mounting platform; then, set up first installation through-hole on the lug structure to make first installation through-hole run through first mount table, so, close the car in-process, with a side cooperation of first mount table on the face of closing the car of automobile body, penetrate bolt or screw first installation through-hole again, make the battery package fix on the automobile body. Because first mount table is protruding formation outside the mounting surface, consequently, the first mount table of this scheme and lug structure as an organic whole, closing the car in-process, need not to weld earlier stage, machine tooling such as polish with first mount table and lug structure, simplified the turn-on process greatly, improved the efficiency of closing the car of battery package. Simultaneously, because the machinery processing such as need not to weld, polish to the lug structure before closing the car in the stage, consequently, effectively avoid the lug structure to take place thermal deformation because of machinery processing such as welding, polish for first mount table is structural at the lug and remains stable. And because the side surface of the first mounting platform is matched with the vehicle closing surface of the vehicle body, the side surface of the first mounting platform is always kept consistent with the vehicle closing surface of the vehicle body in the vehicle closing process, and therefore the vehicle closing precision of the battery pack is effectively improved.

The principle and effect of the present invention will be further explained by combining the above scheme:

in one embodiment, the battery case is provided with a positioning groove, and one end of the lifting lug structure is inserted into the positioning groove and connected with the battery case.

In one embodiment, a plurality of surrounding plates are arranged on the battery shell, the surrounding plates are sequentially connected and surround the battery shell to form the positioning groove, and when one end of the lifting lug structure is inserted into the positioning groove, the surrounding plates are in contact fit with the surface of the lifting lug structure.

In one embodiment, the lifting lug structure comprises a first mounting part and a second mounting part, the first mounting part is connected with the second mounting part, the mounting surface and the first mounting through hole are both arranged on the first mounting part, and when the second mounting part is inserted into the positioning groove, the enclosing plate is in contact fit with the surface of the second mounting part.

In one embodiment, the second installation part comprises a first installation plate, a second installation plate and a reinforcing plate connected between the first installation plate and the second installation plate, when the second installation part is inserted into the positioning groove, the first installation plate and the second installation plate are both attached to the surrounding plate, and the reinforcing plate is attached to the battery case.

In one embodiment, the battery pack further comprises a longitudinal beam arranged on the battery case, the longitudinal beam protrudes outwards to form a second mounting table, one side face of the second mounting table is used for matching with the vehicle closing face of the vehicle body, and a second mounting through hole penetrates through the second mounting table.

In one embodiment, the battery pack further comprises a mounting seat, the mounting seat is mounted in the battery case, a fixing table is arranged on the mounting seat, and the fixing table is used for mounting a battery management system main board or a battery management system slave board or a fuse.

In one embodiment, the mounting seat is bonded in the battery shell through structural adhesive.

In one embodiment, the number of the fixing stations is two or more, the two or more fixing stations are arranged at intervals, and a reinforcing rib is arranged between every two adjacent fixing stations.

In one embodiment, the number of the mounting seats is more than three, the three mounting seats are mounted in the battery case at intervals, and fixing platforms on the three mounting seats are respectively used for mounting the battery management system main board, the battery management system slave board and the fuse.

In one embodiment, a first fixing frame is arranged on the mounting seat and used for fixing a ground wire on the battery module.

In one embodiment, a second fixing frame is arranged on the mounting seat and used for fixing the cooling water pipe.

A battery system comprises a battery module and the battery pack, wherein the battery module is arranged in a battery shell.

In the battery system, the battery pack is adopted, and the mounting surface of the lifting lug structure is outwards protruded to form a first mounting platform; then, set up first installation through-hole on the lug structure to make first installation through-hole run through first mount table, so, close the car in-process, with a side cooperation of first mount table on the face of closing the car of automobile body, penetrate bolt or screw first installation through-hole again, make the battery package fix on the automobile body. Because first mount table is protruding formation outside the mounting surface, consequently, the first mount table of this scheme and lug structure as an organic whole, closing the car in-process, need not to weld earlier stage, machine tooling such as polish with first mount table and lug structure, simplified the turn-on process greatly, improved the efficiency of closing the car of battery package. Simultaneously, because the machinery processing such as need not to weld, polish to the lug structure before closing the car in the stage, consequently, effectively avoid the lug structure to take place thermal deformation because of machinery processing such as welding, polish for first mount table is structural at the lug and remains stable. And because the side surface of the first mounting platform is matched with the vehicle closing surface of the vehicle body, the side surface of the first mounting platform is always kept consistent with the vehicle closing surface of the vehicle body in the vehicle closing process, and therefore the vehicle closing precision of the battery pack is effectively improved.

A battery pack processing method comprises the following steps: acquiring a first mounting table on the lifting lug structure by adopting an integral forming process; drilling the lifting lug structure, and enabling a hole to penetrate through the first mounting platform; after drilling, inserting one end of the lifting lug structure into a positioning groove on a battery case, and welding the lifting lug structure and the battery case.

According to the battery pack processing method, the first installation platform is obtained on the lifting lug structure by adopting an integrated forming process, so that the first installation platform and the lifting lug structure are integrated, and therefore, in the car closing process, the first installation platform and the lifting lug structure do not need to be subjected to machining such as early-stage welding and polishing, the car closing process is greatly simplified, and the car closing efficiency of the battery pack is improved. Meanwhile, the lug structure is not required to be welded, polished and the like in the front period of the battery pack closing process, so that the thermal deformation of the lug structure caused by welding, polishing and the like in the machining process is effectively avoided, the flatness of the side face of the first mounting platform and the flatness of the car closing face of the car body are always kept consistent, and therefore the battery pack closing precision is effectively improved. In addition, in the installation process of the lug structure and the battery shell, one end of the lug structure is inserted into the positioning groove, and then the lug structure and the battery shell are welded, so that the lug structure is fixed in the welding process through the positioning groove, and the rapid welding of an operator is facilitated; meanwhile, the welding strength between the lifting lug structure and the battery shell is improved, and the overall structural strength of the battery pack is improved.

Drawings

Fig. 1 is a view illustrating a battery pack according to an embodiment of the present invention;

fig. 2 is another perspective view of a battery pack structure according to an embodiment of the present invention;

fig. 3 is a partial sectional view of the battery pack of fig. 2 taken along a-a direction;

fig. 4 is a partial sectional view of the battery pack of fig. 2 taken along the direction B-B;

fig. 5 is a partial sectional view of the battery pack of fig. 2 taken along the direction C-C;

fig. 6 is a schematic view of a lifting lug according to an embodiment of the present invention;

fig. 7 is a schematic structural view of four mounting seats according to an embodiment of the present invention;

fig. 8 is a partial schematic view of an explosion structure of a battery pack according to an embodiment of the present invention;

fig. 9 is a first flowchart of a battery pack processing method according to an embodiment of the present invention;

fig. 10 is a flow chart of a battery pack processing method according to an embodiment of the present invention.

Description of reference numerals:

100. the battery pack comprises a battery pack body, 110, a battery case body, 111, a positioning groove, 112, a surrounding plate, 120, a lifting lug structure, 121, a first installation platform, 122, an installation surface, 123, a first installation part, 124, a second installation part, 1241, a first installation plate, 1242, a second installation plate, 1243, a reinforcing plate, 125, a connecting part, 126, a first installation through hole, 130, a longitudinal beam, 131, a second installation platform, 132, a second installation through hole, 140, an installation seat, 141, a fixing platform, 1411, a first fixing hole, 142, a reinforcing rib, 143, a first fixing frame, 1431, a first supporting plate, 1432, a bearing plate, 1433, a second fixing hole, 1434, a third fixing hole, 144, a second fixing frame, 1441, a second supporting plate, 1442, a pressing plate, 1443, a fourth fixing hole, 145, a weight-reducing groove, 150 and structural glue.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

In one embodiment, referring to fig. 1, fig. 2 and fig. 5, a battery pack 100 includes: a battery case 110 and a shackle structure 120. The shackle structure 120 is mounted to the battery casing 110, and the shackle structure 120 is provided with a mounting surface 122. The mounting surface 122 is formed with a first mounting land 121 projecting outwardly. One side surface of the first mounting base 121 facing away from the mounting surface 122 is adapted to the vehicle-closing surface of the vehicle body. The shackle structure 120 is provided with a first mounting through hole 126. The first mounting through-hole 126 penetrates the first mounting stage 121.

In the battery pack 100, the first mounting platform 121 is formed on the mounting surface 122 of the lifting lug structure 120 in an outward protruding manner; next, a first mounting through hole 126 is formed in the lifting lug structure 120, and the first mounting through hole 126 penetrates through the first mounting table 121, so that, in the process of closing the vehicle, one side surface of the first mounting table 121 is fitted on the closing surface of the vehicle body, and then a bolt or a screw is inserted into the first mounting through hole 126, so that the battery pack 100 is fixed on the vehicle body. Because the first mounting table 121 is formed by protruding the mounting surface 122 outward, the first mounting table 121 and the lifting lug structure 120 of the embodiment are of an integral structure, and in the process of turning on the vehicle, the first mounting table 121 and the lifting lug structure 120 do not need to be subjected to machining such as welding and polishing in the earlier stage, so that the turning-on process is greatly simplified, and the turning-on efficiency of the battery pack 100 is improved. Meanwhile, the lug structure 120 does not need to be welded, polished and other machining processes in the front period of the assembly process, so that the lug structure 120 is effectively prevented from generating thermal deformation due to the welding, polishing and other machining processes, and the first mounting table 121 is kept stable on the lug structure 120. And because the side surface of the first mounting table 121 is matched with the vehicle closing surface of the vehicle body, the side surface of the first mounting table 121 is always kept consistent with the vehicle closing surface of the vehicle body in the vehicle closing process, and thus, the vehicle closing precision of the battery pack 100 is effectively improved.

It should be noted that, the side surface of the first mounting platform 121, which faces away from the mounting surface 122, is adapted to the vehicle-joining surface of the vehicle body, which is to be understood as that the side surface of the first mounting platform 121 is matched with the vehicle-joining surface of the vehicle body; meanwhile, the vehicle-fitted surface of the vehicle body is understood to be a surface of the vehicle body which is in contact with the battery pack 100 when the vehicle body is fixedly mounted to the battery pack 100. Specifically, in the present embodiment, the side surface of the first mounting table 121 and the vehicle-joining surface of the vehicle body are both flat surfaces.

Alternatively, the embodiment of the mounting surface 122 of the shackle structure 120 protruding outward to form the first mounting platform 121 is an extrusion process, a casting process, a die-casting process, or other integral molding process.

Further, referring to fig. 2 and fig. 4, the battery case 110 is provided with a positioning groove 111. One end of the tab structure 120 is inserted into the positioning groove 111 and is coupled to the battery case 110. Therefore, the installation steps of the shackle structure 120 on the battery case 110 are as follows: positioning and connecting, namely, inserting one end of the lifting lug structure 120 into the positioning groove 111; and then, the lug structure 120 is connected with the battery case 110, so that the lug structure 120 is always positioned in the positioning groove 111 in the connection process, and the problem that the connection operation is difficult to smoothly perform due to the fact that the lug structure 120 slides on the battery case 110 is avoided. Meanwhile, the lug structure 120 is inserted into the positioning groove 111, so that the connection between the lug structure 120 and the battery case 110 is tighter, and the overall structural strength of the battery pack 100 is effectively improved. The connection manner of the shackle structure 120 and the battery case 110 may be welding, bolting, riveting or other connection manners.

Further, referring to fig. 4, a plurality of surrounding plates 112 are disposed on the battery case 110. The plurality of surrounding plates 112 are sequentially connected and surround the battery case 110 to form a positioning groove 111. When one end of the shackle structure 120 is inserted into the positioning groove 111, the shroud 112 is in contact fit with the surface of the shackle structure 120. Therefore, the positioning groove 111 of the present embodiment is formed by surrounding the battery case 110 by the plurality of surrounding plates 112, that is, it is not necessary to perform the grooving operation on the battery case 110, so as to ensure the structural integrity of the battery case 110 and avoid the structural stability of the battery case 110 from being changed due to the grooving operation. Meanwhile, the processing amount of the battery pack 100 is reduced, and the processing efficiency of the battery pack 100 is improved. In addition, the surrounding plate 112 is in contact fit with the surface of the shackle structure 120, so that the shackle structure 120 is effectively limited, and the shackle structure 120 is prevented from sliding on the battery case 110.

It should be noted that, when the shackle structure 120 is connected to the battery case 110 by welding, a portion of the shroud plate 112 may be melted during the welding process and welded to a portion of the shackle structure 120, so as to complete the connection between the two, thereby preventing the two from being required to operate on the battery case 110 during the connection process, and effectively preventing the structural stability of the battery case 110 from being damaged.

Specifically, four surrounding plates 112 are provided, and the four surrounding plates 112 are connected end to end in sequence to form the positioning groove 111. While the surrounding plate 112 is integrated with the battery case 110.

In one embodiment, referring to fig. 4, the shackle structure 120 includes a first mounting portion 123 and a second mounting portion 124. The first mounting portion 123 is connected to the second mounting portion 124. The mounting surface 122 and the first mounting through-hole 126 are both provided on the first mounting portion 123. When the second mounting portion 124 is inserted into the positioning groove 111, the shroud 112 is in contact fit with the surface of the second mounting portion 124. Therefore, the distribution of the lifting lug structures 120 is more reasonable, and the distribution of the lifting lug structures 120 is convenient to be connected with the battery shell 110 and the vehicle body. Specifically, in the present embodiment, the lifting lug structure 120 further includes a connecting portion 125, the first mounting portion 123 is connected to the second mounting portion 124 through the connecting portion 125, and the first mounting portion 123, the connecting portion 125 and the second mounting portion 124 are an integral structure.

Further, referring to fig. 6, the second mounting portion 124 includes a first mounting plate 1241, a second mounting plate 1242, and a reinforcing plate 1243 connected between the first mounting plate 1241 and the second mounting plate 1242. When the second mounting portion 124 is inserted into the positioning groove 111, the first mounting plate 1241 and the second mounting plate 1242 are both attached to the surrounding plate 112, and the reinforcing plate 1243 is attached to the battery case 110. As such, the coupling strength between the tab structure 120 and the battery case 110 is improved, so that the structure of the battery pack 100 is more stable. Meanwhile, a reinforcing plate 1243 is connected between the first mounting plate 1241 and the second mounting plate 1242, so that the first mounting plate 1241 and the second mounting plate 1242 are stably supported, and when welding is performed between the enclosing plate 112 and the first mounting plate 1241 and between the enclosing plate 112 and the second mounting plate 1242, the first mounting plate 1241 and the second mounting plate 1242 generate heat due to welding and are seriously thermally deformed.

In one embodiment, referring to fig. 2 and 3, the battery pack 100 further includes a longitudinal beam 130 mounted on the battery case 110. The longitudinal beam 130 protrudes outward and forms a second mounting platform 131. One side surface of the second mounting table 131 is adapted to the vehicle-closing surface of the vehicle body. The longitudinal beam 130 is further provided with a second mounting through hole 132. The second mounting through hole 132 penetrates the second mounting stage 131. Therefore, the second mounting table 131 is formed on the longitudinal beam 130 in a protruding mode; then, a second mounting through hole 132 is formed in the side member 130, and the second mounting through hole 132 penetrates the second mounting base 131, so that, in the process of closing the vehicle, one side surface of the second mounting base 131 is fitted to the closing surface of the vehicle body, and then a bolt or a screw is inserted into the second mounting through hole 132, so that the battery pack 100 is fixed to the vehicle body. Because the second mounting table 131 is formed by protruding the longitudinal beam 130, the second mounting table 131 and the longitudinal beam 130 are integrated, and in the process of closing the battery pack, the second mounting table 131 and the longitudinal beam 130 do not need to be subjected to machining such as early-stage welding and polishing, so that the process of closing the battery pack 100 is greatly simplified, and the efficiency of closing the battery pack is improved. Meanwhile, in the front closing period, the longitudinal beam 130 does not need to be welded, polished and other machining processes, so that the longitudinal beam 130 is effectively prevented from generating thermal deformation due to the welding, polishing and other machining processes, the second mounting table 131 is kept stable on the longitudinal beam 130, and the closing precision of the battery pack 100 is improved. It should be noted that, during the closing process of the battery pack 100, in addition to the installation and fixation of the lifting lug structure 120 and the vehicle body, the longitudinal beam 130 also needs to be installed and fixed with the vehicle body, so as to ensure that the battery pack 100 is more stable on the vehicle body. Specifically, in the present embodiment, there are two longitudinal beams 130, and the two longitudinal beams 130 are respectively mounted on two opposite sides of the battery case 110.

In one embodiment, referring to fig. 1 and 7, the battery pack 100 further includes a mounting seat 140. The mounting base 140 is mounted in the battery case 110, and the mounting base 140 is provided with a fixing base 141. The fixing base 141 is used to mount a battery management system motherboard or a battery management system slave board or a fuse. Therefore, in the embodiment, the battery management system motherboard or the battery management system slave board or the fuse is installed on the installation seat 140 instead of being directly installed on the battery case 110, so that the need of directly machining the battery case 110, such as drilling a threaded hole, welding a connection structure, and the like, is effectively avoided, and thus, the high flatness of the battery case 110 is effectively ensured. Meanwhile, the battery management system mainboard, the battery management system slave board and the fuse are integrated on the mounting base 140, so that the battery management system mainboard, the battery management system slave board and the fuse can be managed and maintained in a unified manner, and the maintenance work of the battery pack 100 by an operator is greatly facilitated. Specifically, in the present embodiment, the battery case 110 includes an upper case and a lower case, the upper case covers the lower case, and the mounting base 140 is installed in the lower case. Meanwhile, the weight-reducing grooves 145 are formed in the mounting base 140 to reduce the weight of the mounting base 140, so that the battery pack 100 can be produced in a light weight. The mounting base 140 is mounted in the lower housing by bonding, welding, bolting, or other methods.

It should be noted that the BATTERY management system (BATTERY MANAGEMENT SYSTEM, abbreviated as BMS) motherboard and the BATTERY management system (BATTERY MANAGEMENT SYSTEM, abbreviated as BMS) slave board are links between the BATTERY module and the user, and the BATTERY management system slave board mainly collects and balances the voltage on the BATTERY module; the battery management system mainboard processes according to the voltage and the temperature of each monomer collected by the battery management system slave board, estimates the electric quantity of the battery pack 100, measures the leakage resistance of the bus of the battery pack 100 and communicates with the whole vehicle. The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value.

Specifically, referring to fig. 8, the mounting base 140 is bonded in the battery case 110 by a structural adhesive 150, so as to ensure that the structure of the mounting base 140 is more stable. Wherein, the mounting base 140 is specifically adhered in the lower shell by the structural adhesive 150.

Further, the number of the fixing bases 141 is two or more. More than two fixed stations 141 interval sets up, and sets up strengthening rib 142 between two adjacent fixed stations 141, so, through strengthening rib 142, strengthen fixed station 141's structural strength for battery management system mainboard, battery management system slave plate and fuse obtain stable installation.

Further, referring to fig. 7, the fixing base 141 is provided with a first fixing hole 1411, and the fixing members of the battery management system motherboard, the battery management system slave board and the fuse penetrate into the first fixing hole 1411 to complete the mounting operation. Specifically, in the present embodiment, the first fixing hole 1411 is a threaded hole.

In one embodiment, referring to fig. 7, there are more than three mounting seats 140. Three or more mounting bases 140 are mounted in the battery case 110 at intervals. The fixing platforms 141 on the three mounting seats 140 are used for mounting a battery management system main board, a battery management system slave board and a fuse respectively. As can be seen, the battery management system motherboard, the battery management system slave board, and the fuse are individually mounted on the corresponding mounting seats 140.

Specifically, referring to fig. 7, the number of the mounting seats 140 is four, one mounting seat 140 is used for mounting a battery management system motherboard, one mounting seat 140 is used for mounting a fuse, and the other two mounting seats 140 are respectively used for mounting two battery management system slave boards.

In one embodiment, referring to fig. 7, the mounting base 140 is provided with a first fixing frame 143. The first fixing frame 143 is used for fixing the ground wire on the battery module. Thus, the ground wires on the battery module are stably fixed through the first fixing frame 143, so that the ground wires are orderly managed, and the situation that the ground wires are loosely distributed in the battery shell 110 to cause disorder in the battery shell 110 is avoided.

Further, referring to fig. 7, the first fixing frame 143 includes a first supporting plate 1431 and a first supporting plate 1432 connected to the first supporting plate 1431. The first support plate 1431 is mounted on the mount 140. The first bearing plate 1432 is provided with a second fixing hole 1433, and the second fixing hole 1433 is used for penetrating a fixing plate on the ground wire, so that the fixing operation of the ground wire is facilitated.

Furthermore, referring to fig. 7, the first supporting plate 1431 is provided with a third fixing hole 1434, and the third fixing hole 1434 is used for penetrating a fixing plate on the cold water pipe, so that the first fixing frame 143 can fix not only the ground wire, but also the cold water pipe, so that the first fixing frame 143 can be used for two purposes, the number of fixing structures on the mounting base 140 is reduced, and the mounting base 140 is effectively prevented from becoming crowded. Specifically, in this embodiment, there are two first support plates 1431, two first support plates 1431 are installed on the mounting base 140 at intervals, and the first support plate 1432 is connected between the two first support plates 1431.

In one embodiment, referring to fig. 7, a second fixing frame 144 is disposed on the mounting base 140. The second fixing frame 144 is used for fixing the cooling water pipe, so that the cold water pipe on the battery module is stably fixed through the second fixing frame 144, and the cold water pipe is orderly managed.

Further, referring to fig. 7, the second fixing frame 144 includes a second supporting plate 1441 and a pressing plate 1442 connected to the second supporting plate 1441, the second supporting plate 1441 is mounted on the mounting base 140, a fourth fixing hole 1443 is formed in the second supporting plate 1441, and the fourth fixing hole 1443 is used for penetrating a fixing member on the cold water pipe, so that the cold water pipe on the battery module is stably fixed. Meanwhile, the pressing plate 1442 is used for abutting and press-fitting with the cold water pipe, so that when the cold water pipe is fixed on the second supporting plate 1441, the pressing plate 1442 abuts against the cold water pipe, the cold water pipe is prevented from being bent and arched, and thus, the cold water pipe is more stable in the battery case 110.

In one embodiment, referring to fig. 1, fig. 2 and fig. 5, a battery system includes a battery module and the battery pack 100 in any of the above embodiments. The battery module is mounted in the battery case 110.

In the battery system, the battery pack 100 is adopted, and the first mounting platform 121 is formed on the mounting surface 122 of the lifting lug structure 120 in an outward protruding manner; next, a first mounting through hole 126 is formed in the lifting lug structure 120, and the first mounting through hole 126 penetrates through the first mounting table 121, so that, in the process of closing the vehicle, one side surface of the first mounting table 121 is fitted on the closing surface of the vehicle body, and then a bolt or a screw is inserted into the first mounting through hole 126, so that the battery pack 100 is fixed on the vehicle body. Because the first mounting table 121 is formed by protruding the mounting surface 122 outward, the first mounting table 121 and the lifting lug structure 120 of the embodiment are of an integral structure, and in the process of turning on the vehicle, the first mounting table 121 and the lifting lug structure 120 do not need to be subjected to machining such as welding and polishing in the earlier stage, so that the turning-on process is greatly simplified, and the turning-on efficiency of the battery pack 100 is improved. Meanwhile, the lug structure 120 does not need to be welded, polished and other machining processes in the front period of the assembly process, so that the lug structure 120 is effectively prevented from generating thermal deformation due to the welding, polishing and other machining processes, and the first mounting table 121 is kept stable on the lug structure 120. And because the side surface of the first mounting table 121 is matched with the vehicle closing surface of the vehicle body, the side surface of the first mounting table 121 is always kept consistent with the vehicle closing surface of the vehicle body in the vehicle closing process, and thus, the vehicle closing precision of the battery pack 100 is effectively improved.

Furthermore, the battery system further comprises a battery management system mainboard, a battery management system slave board and a fuse, wherein the battery management system mainboard, the battery management system slave board and the fuse are all electrically connected with the battery module. The battery management system motherboard, the battery management system slave board, and the fuse are mounted in the battery case 110.

In one embodiment, referring to fig. 1, fig. 2, fig. 5 and fig. 9, a method for processing a battery pack 100 includes the following steps:

s10, obtaining a first mounting table 121 on the lifting lug structure 120 by adopting an integral forming process;

s20, drilling the lifting lug structure 120, and making the hole penetrate through the first mounting platform 121;

s30, drilling, inserting one end of the shackle structure 120 into the positioning groove 111 of the battery case 110, and welding the shackle structure 120 and the battery case 110.

According to the processing method of the battery pack 100, the first installation platform 121 is obtained on the lifting lug structure 120 by adopting an integral forming process, so that the first installation platform 121 and the lifting lug structure 120 are of an integral structure, and therefore, in the process of car combination, the first installation platform 121 and the lifting lug structure 120 do not need to be subjected to machining such as early-stage welding and polishing, the car combination procedure is greatly simplified, and the car combination efficiency of the battery pack 100 is improved. Meanwhile, the lug structure 120 does not need to be welded, polished and other machining processes in the front closing period, so that the lug structure 120 is effectively prevented from generating thermal deformation due to the welding, polishing and other machining processes, the flatness of the side surface of the first mounting table 121 and the closing surface of the vehicle body is always kept consistent, and therefore the closing precision of the battery pack 100 is effectively improved. In addition, in the installation process of the shackle structure 120 and the battery case 110, in this embodiment, one end of the shackle structure 120 is inserted into the positioning groove 111, and then the shackle structure 120 and the battery case 110 are welded, so that the shackle structure 120 is kept fixed in the welding process through the positioning groove 111, and the welding is facilitated for operators to weld quickly; meanwhile, the welding strength between the lug structure 120 and the battery case 110 is also improved, which is beneficial to improving the overall structural strength of the battery pack 100.

Further, referring to fig. 10, the step S30 of welding the shackle structure 120 and the battery case 110 includes:

s31, selecting more than two pre-welding positions between the lifting lug structure 120 and the battery shell 110, and welding the pre-welding positions;

s32, after prewelding, full welding is performed between the shackle structure 120 and the battery case 110. As such, it is advantageous to improve the welding quality between the tab structure 120 and the battery case 110, thereby improving the overall structural stability of the battery pack 100. Full welding, also called full welding, is to weld all the contact areas of two workpieces to be welded together.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A battery pack, comprising:

a battery case; and

the lifting lug structure is arranged on the battery shell, an installation face is arranged on the lifting lug structure, a first installation platform is formed by protruding the installation face outwards, one side face, back to the installation face, of the first installation platform is used for being matched with a vehicle closing face of a vehicle body, a first installation through hole is formed in the lifting lug structure, and the first installation through hole penetrates through the first installation platform.

2. The battery pack of claim 1, wherein the battery case is provided with a positioning groove, and one end of the lifting lug structure is inserted into the positioning groove and connected with the battery case.

3. The battery pack according to claim 2, wherein the battery case is provided with a plurality of surrounding plates, the surrounding plates are sequentially connected and surround the battery case to form the positioning groove, and when one end of the lifting lug structure is inserted into the positioning groove, the surrounding plates are in contact fit with the surface of the lifting lug structure.

4. The battery pack according to claim 3, wherein the lug structure includes a first mounting portion and a second mounting portion, the first mounting portion is connected to the second mounting portion, the mounting surface and the first mounting through hole are both disposed on the first mounting portion, and when the second mounting portion is inserted into the positioning groove, the enclosing plate is in contact fit with a surface of the second mounting portion.

5. The battery pack of claim 4, wherein the second mounting portion comprises a first mounting plate, a second mounting plate, and a reinforcing plate connected between the first mounting plate and the second mounting plate, wherein when the second mounting portion is inserted into the positioning groove, the first mounting plate and the second mounting plate are both attached to the surrounding plate, and the reinforcing plate is attached to the battery case.

6. The battery pack according to claim 1, further comprising a longitudinal beam mounted on the battery case, wherein the longitudinal beam protrudes outwards to form a second mounting platform, one side surface of the second mounting platform is used for matching with a vehicle closing surface of the vehicle body, and a second mounting through hole is further formed in the longitudinal beam and penetrates through the second mounting platform.

7. The battery pack according to any one of claims 1 to 6, further comprising a mounting seat, wherein the mounting seat is installed in the battery case, and a fixing table is arranged on the mounting seat and used for installing a battery management system main board or a battery management system slave board or a fuse.

8. The battery pack according to claim 7, wherein the number of the fixing stations is two or more, the two or more fixing stations are spaced apart from each other, and a reinforcing rib is provided between each two adjacent fixing stations; or, the number of the mounting seats is more than three, the three mounting seats are arranged in the battery shell at intervals, and fixing platforms on the three mounting seats are respectively used for mounting the battery management system mainboard, the battery management system slave board and the fuse; or,

the mounting seat is bonded in the battery shell through structural adhesive.

9. The battery pack according to claim 7, wherein the mounting base is provided with a first fixing frame, and the first fixing frame is used for fixing a ground wire on the battery module; or,

and a second fixing frame is arranged on the mounting seat and used for fixing the cooling water pipe.

10. A battery system comprising a battery module and the battery pack according to any one of claims 1 to 9, wherein the battery module is mounted in the battery case.