CN209912908U - Battery pack and vehicle with same - Google Patents

Abstract

The utility model discloses a battery package and have its vehicle, battery package includes: casing, first battery module and second battery module, high-pressure pencil and low pressure pencil, the casing includes: the device comprises a lower shell and an upper shell detachably arranged on the lower shell, wherein a first arrangement area, a second arrangement area and a middle area arranged between the first arrangement area and the second arrangement area are arranged on the lower shell; the first battery module is arranged in the first arrangement area, and the second battery module is arranged in the second arrangement area; high-voltage wire harness and low-voltage wire harness set up in middle zone and high-voltage wire harness all link to each other with first battery module and second battery module, and low-voltage wire harness all links to each other with first battery module and second battery module. From this, not only can reduce the Z of battery package to length to make the battery package have bigger energy density, make high pressure pencil and low pressure pencil walk the line more rationally moreover, can improve the safety in utilization of battery package.

Description

Battery pack and vehicle with same

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a battery package and have its vehicle is related to.

Background

With the rapid development of electric vehicles, people have increasingly higher requirements on various aspects of electric vehicles, and particularly, the requirements on a battery pack, which is one of the cores of the electric vehicles, are more severe.

Two main aspects are focused on:

(1) with the improvement of the national subsidy standard of new energy vehicles, the cost pressure of the battery pack is higher and higher, and the energy density and the volume density of the battery pack must be improved;

(2) the safety requirements of people on the battery pack, especially the reliability of the electrical safety in the battery pack; when designing the battery pack, the battery pack is required to be designed in a light weight mode, the space utilization rate of the battery pack is improved to the maximum extent, and the safety and the reliability of the battery pack are also required to be improved.

However, in the prior art, the electrical connection in the battery pack is disordered, the assembly efficiency is low, the occurrence of safety accidents of the battery pack in the assembly process is easily caused, the space utilization rate is low, the local space of the battery pack is increased for low-voltage signal acquisition, and the waste of the whole vehicle space is further caused.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a battery pack, which has higher energy density and higher safety.

The utility model discloses still further provide a vehicle that has above-mentioned battery package.

According to the utility model discloses battery package of first aspect embodiment includes: casing, first battery module and second battery module, high-pressure pencil and low pressure pencil, the casing includes: the device comprises a lower shell and an upper shell detachably arranged on the lower shell, wherein a first arrangement area, a second arrangement area and a middle area arranged between the first arrangement area and the second arrangement area are arranged on the lower shell; the first battery module is arranged in the first arrangement area, and the second battery module is arranged in the second arrangement area; the high-voltage wire harness and the low-voltage wire harness are arranged in the middle area, the high-voltage wire harness is connected with the first battery module and the second battery module, and the low-voltage wire harness is connected with the first battery module and the second battery module.

According to the utility model discloses battery package divides down the casing regionally to make first battery module, second battery module and high-pressure pencil and low pressure pencil all set up rationally at last casing and the accommodation space that the casing was injectd down, not only can reduce Z of battery package to length, thereby make the battery package have bigger energy density, make high-pressure pencil and low pressure pencil walk the line all more rationally moreover, can improve the safety in utilization of battery package.

According to some embodiments of the present invention, a plurality of first transverse reinforcing ribs are disposed on the first arrangement region, each first transverse reinforcing rib extends along a width direction of the housing, and the plurality of first transverse reinforcing ribs are arranged at intervals along a length direction of the housing, and a first battery module installation groove is defined between two adjacent first transverse reinforcing ribs; the second is arranged and is provided with the horizontal strengthening rib of a plurality of second on the region, every the horizontal strengthening rib of second is followed the width direction of casing extends, and is a plurality of the horizontal strengthening rib of second is followed the length direction interval arrangement of casing, adjacent two the horizontal strengthening rib of second injects second battery module mounting groove.

In some embodiments, a plurality of the first transverse reinforcing ribs and a plurality of the second transverse reinforcing ribs correspond one to each other in the width direction of the battery case.

Further, the middle area is also provided with a cooling water pipe suitable for cooling the first battery module and the second battery module;

every first horizontal strengthening rib with correspond the horizontal strengthening rib integrated into one piece of second, and every first horizontal strengthening rib with correspond be provided with the confession between the horizontal strengthening rib of second dodge the structure that condenser tube passed.

Further construct, dodge the structure and construct for the open groove of dodging in upper end, first horizontal strengthening rib or/and be provided with on the horizontal strengthening rib of second and be located dodge the connecting plate of groove top.

Optionally, the connecting plate comprises: two diaphragms and the vertical plate of setting between two diaphragms, two the diaphragm is followed the horizontal extension of casing just the vertical plate is followed the longitudinal extension of casing, two the diaphragm with the vertical plate respectively with correspond first horizontal strengthening rib or/and the horizontal strengthening rib of second is fixed.

Furthermore, an intermediate plate is further arranged on the longitudinal plate, extends in the transverse direction of the shell and is fixed with the corresponding first transverse reinforcing ribs or/and the corresponding second transverse reinforcing ribs.

Optionally, the low voltage wiring harness comprises: and the signal connecting plate is provided with the signal connecting plate for mounting the signal wire, and the signal wire is suitable for transmitting the low-voltage signals of the first battery module and the second battery module to the BMS slave plate.

According to the utility model discloses vehicle of second aspect embodiment, including the battery package in the above-mentioned embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a battery pack according to an embodiment of the present invention (upper case not shown);

fig. 2 is a schematic view of a lower case of a battery pack and a cooling water pipe according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a battery pack according to an embodiment of the present invention;

fig. 4 is a partial schematic view of a lower housing of a battery pack according to an embodiment of the present invention;

fig. 5 is a schematic view of a battery module of a battery pack according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a signal connection board (PCB board) of a battery pack according to an embodiment of the present invention;

fig. 7 is a partial schematic view of a middle region of a battery pack according to an embodiment of the invention;

fig. 8 is a schematic view of a mounting bracket of a battery pack according to an embodiment of the present invention;

fig. 9 is another schematic view of a mounting bracket for a battery pack according to an embodiment of the invention.

Reference numerals:

the battery pack 100 is provided with a battery pack,

a shell 10, an upper shell 11, a lower shell 12, a first high-voltage output interface 13, a second high-voltage output interface 14,

a battery module 20, a first battery module 21, a second battery module 22,

a low-voltage wiring harness 30, a signal connection board (PCB board) 31, a PCB board body portion 31a, a buffer portion 31b, a first board portion 311, a second board portion 312, a first signal input interface 313, a second signal input interface 314, a signal output interface 315,

a high-voltage copper bar 40, a left high-voltage copper bar 41, a right high-voltage copper bar 42,

a connecting plate 50, a transverse plate 51, a longitudinal plate 52, an intermediate plate 53,

the BMS is connected to the slave board 60,

BDU70，

a mounting bracket 80, an upper mounting bracket 81, an upper mounting plate 811, a first clamping part 812, a fixing plate 813, a lower mounting bracket 82, a lower mounting plate 821, a second clamping part 822, a support pillar 823, an anti-overflow glue groove 824,

the cooling water pipe (90) is provided,

the battery module mounting structure comprises a first arrangement area a, a first transverse reinforcing rib a1, a second arrangement area b, a second transverse reinforcing rib b1, a middle area c, a first battery module mounting groove d, a second battery module mounting groove e, an avoiding groove f and an electric control area g.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A battery pack 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 9.

As shown in fig. 1, fig. 2 and fig. 3, a battery pack 100 according to an embodiment of the present invention includes: the battery pack includes a case 10, first and second battery modules 21 and 22, a high voltage harness, and a low voltage harness 30.

Wherein, the housing 10 includes: a lower case 12 and an upper case 11 detachably provided on the lower case 12, the lower case 12 being provided thereon with a first arrangement region a, a second arrangement region b, and an intermediate region c provided between the first arrangement region a and the second arrangement region b; the first battery module 21 is disposed in the first arrangement region a, and the second battery module 22 is disposed in the second arrangement region b; the high-voltage wire harness and the low-voltage wire harness 30 are arranged in the middle area c, the high-voltage wire harness is connected with the first battery module 21 and the second battery module 22, and the low-voltage wire harness 30 is connected with the first battery module 21 and the second battery module 22.

Specifically, the lower case 12 is specifically divided into a first arrangement region a, a second arrangement region b, and a middle region c, the first battery module 21 is allowed to be installed in the first arrangement region a, the second battery module 22 is provided in the second arrangement region b, the high-voltage harness and the low-voltage harness 30 are provided in the middle region c, the high-voltage harness is electrically connected to the first battery module 21 and the second battery module 22 on both sides thereof, and the low-voltage harness 30 is electrically connected to the first battery module 21 and the second battery module 22 on both sides thereof, respectively.

It is understood that the first battery module 21 and the second battery module 22 constitute the battery module 20, the first battery module 21 is plural and each of the first battery modules 21 extends in the width direction of the case 10, and the second battery module 22 is plural and each of the second battery modules 22 extends in the width direction of the case 10.

According to the utility model discloses battery package 100 will descend casing 12 to divide regionally to make first battery module 21, second battery module 22 and high-pressure pencil and low pressure pencil 30 set up rationally at last casing 11 with the accommodation space that casing 12 injectd down in, not only can reduce battery package 100Z to length, thereby make battery package 100 have bigger energy density, make high-pressure pencil and low pressure pencil 30 walk the line more rationally moreover, can improve battery package 100's safety in utilization.

As shown in fig. 2 and 4, the first arrangement region a is provided with a plurality of first lateral reinforcing ribs a1, each of the first lateral reinforcing ribs a1 extends in the width direction of the housing 10, and a plurality of first lateral reinforcing ribs a1 are arranged at intervals in the length direction of the housing 10, with a first battery module mounting groove d defined between two adjacent first lateral reinforcing ribs a 1;

the second disposition region b is provided thereon with a plurality of second lateral reinforcing ribs b1, each of the second lateral reinforcing ribs b1 extends in the width direction of the case 10, and a plurality of second lateral reinforcing ribs b1 are disposed at intervals in the length direction of the case 10, with adjacent two of the second lateral reinforcing ribs b1 defining second battery module mounting grooves e.

That is, the first battery module 21 may be mounted in the first battery module mounting groove d, and the second battery module 22 may be mounted in the second battery module mounting groove e, and may be fixed and limited by the first and second lateral reinforcing ribs a1 and b1, respectively. Like this, through setting up first horizontal strengthening rib a1 and setting up second horizontal strengthening rib b1, not only can improve the structural strength of battery package 100 effectively, improve the anti Y of battery package 100 effectively and to the extrusion deformation ability, can improve the fixed effect of battery module 20 in casing 12 down moreover, avoid battery module 20 to rock, further improve the safety in utilization of battery package 100.

In the specific embodiment shown in fig. 4, the plurality of first transverse reinforcing bars a1 and the plurality of second transverse reinforcing bars b1 correspond one to one with each other in the width direction of the battery case. Like this, the messenger is located the first battery module 21 of first battery module mounting groove d and is located the second battery module 22 of second battery module mounting groove e just right to make arranging of battery module 20 in accommodation space more regular, the installation is simpler, convenient, and can make first battery module 21 in first arrangement region a, the arrangement of second battery module 22 in second arrangement region b is compacter, thereby can further improve the energy density of battery package 100.

Further, it is understood that the middle region c is further provided with a cooling water pipe 90 adapted to cool the first and second battery modules 21 and 22. The cooling water tubes 90 may be arranged in an escape structure such that the cooling water tubes 90 are also arranged in the intermediate region c. In this way, not only can the heat dissipation efficiency of the battery pack 100 be improved, but also the space occupation of the battery pack 100 can be further reduced, thereby further improving the energy density of the battery pack 100.

In other words, in some embodiments, each of the first transverse reinforcing ribs a1 is integrally formed with the corresponding second transverse reinforcing rib b1, and an escape structure through which the cooling water pipe 90 passes is provided between each of the first transverse reinforcing ribs a1 and the corresponding second transverse reinforcing rib b 1. Therefore, the first transverse reinforcing rib a1 and the second transverse reinforcing rib b1 are integrally formed, so that the production efficiency and the assembly efficiency of the battery pack 100 can be effectively improved; moreover, by providing the avoiding structure, the cooling water pipe 90 can be arranged in the avoiding structure, so that the space occupation of the battery pack 100 can be further reduced, and the use safety can be improved.

As shown in fig. 2 and 4, the avoidance structure is configured as an avoidance groove f having an open upper end, and the first transverse bead a1 or/and the second transverse bead b1 is provided with a connection plate 50 positioned above the avoidance groove f. By providing the connecting plate 50 in this way, the strength deficiency of the escape groove f between the first lateral bead a1 and the second lateral bead b1 can be compensated for, and the structural strength of the battery pack 100 can be further improved.

Of course, the function of the connection plate 50 in the embodiment of the present invention is not limited thereto, and it is understood that the connection plate 50 may be used to fix the low voltage wire harness 30 and/or the high voltage wire harness.

In one particular embodiment, the low voltage wiring harness 30 includes: and signal connection plates 31 on which the signal lines are mounted are further provided above the connection plates 50, the signal lines being adapted to transmit low-voltage signals of the first and second battery modules 21 and 22 to the BMS slave board 60. That is, the signal connection board 31 is located above the connection board 50. A mounting bracket 80 may be disposed between the signal connection board 31 and the connection board 50, the signal connection board 31 and the connection board 50 may be fixed to upper and lower sides of the mounting bracket 80, respectively, and the signal lines (i.e., the low voltage wire harnesses 30 are integrated on the signal connection board 31). In this way, the fixing stability of the low voltage wire harness 30 inside the battery pack 100 can be further improved, so that the low voltage wire harness 30 can be prevented from being broken, and the signal acquisition and transmission of the low voltage wire harness 30 are more accurate, immediate and stable.

As shown in fig. 4, the connection plate 50 includes: two lateral plates 51 and a longitudinal plate 52 disposed between the two lateral plates 51, the two lateral plates 51 extend in the lateral direction of the housing 10 and the longitudinal plate 52 extends in the longitudinal direction of the housing 10, and the two lateral plates 51 and the longitudinal plate 52 are respectively fixed to the corresponding first lateral reinforcing rib a1 or/and second lateral reinforcing rib b 1.

That is, in some embodiments, the connecting plate 50 is configured as an i-shaped plate, and thus one transverse plate 51 of the connecting plate 50 is connected to one first transverse reinforcing rib a1 or a second transverse reinforcing rib b1 located at the front, and the other transverse plate 51 of the connecting plate 50 is connected to the other first transverse reinforcing rib a1 and/or the second transverse reinforcing rib b1 located at the rear.

Of course, the structure of the connection plate 50 according to the embodiment of the present invention is not limited thereto, and it is understood that the connection plate 50 may further include an intermediate plate 53, and the intermediate plate 53 extends in the transverse direction of the housing 10 and is fixed to the corresponding first transverse reinforcing rib a1 or/and second transverse reinforcing rib b 1.

As shown in fig. 4, the battery pack 100 includes: casing 10, battery module 20 and signal connection board 31, casing 10 includes: a lower case 12 and an upper case 11 detachably provided on the lower case 12, the upper case 11 and the lower case 12 defining an accommodating space; the battery module 20 is disposed in the receiving space and connected to the signal connection plate 31, and the signal connection plate 31 is configured as a PCB (Printed Circuit Board).

It can be understood that, after the electronic equipment adopts the PCB, because of the consistency of the similar PCB, the error of manual wiring is avoided, the automatic insertion or mounting, the automatic soldering and the automatic detection of electronic components can be realized, the quality of the electronic equipment is ensured, the labor productivity is improved, the cost is reduced, and the maintenance is convenient.

According to the utility model discloses battery package 100 makes signal connection board 31 construct for the PCB board, and has integrateed the signal line on the PCB board at least. Therefore, the quality of the battery pack 100 can be improved, the assembly speed is increased, the cost is reduced, the maintenance of the battery pack 100 is simpler and more convenient, the low-voltage wire harnesses 30 such as signal wires can be integrated, the space occupation of the low-voltage wire harnesses 30 can be further reduced, and the energy density of the battery pack 100 can be effectively improved.

As shown in fig. 1, the lower case 12 is provided thereon with a first arrangement region a, a second arrangement region b, and an intermediate region c provided between the first arrangement region a and the second arrangement region b; the battery module 20 includes: a first battery module 21 and a second battery module 22, the first battery module 21 being disposed at a first disposition region a, the second battery module 22 being disposed at a second disposition region b, and at least a portion of the PCB board being disposed at a middle region c. Thus, the Z-direction length of the battery pack 100 can be effectively reduced by disposing the PCB in the middle region c.

As shown in fig. 2 and 5, one end of the lower case 12 in the length direction is further provided with an electric control area g, and the PCB is configured in a "T" shape and includes: a first plate portion 311 extending in the longitudinal direction of the case 10 and a second plate portion 312 extending in the width direction of the case 10, the first plate portion 311 being disposed in the middle area c and connected to the first and second battery modules 21 and 22, the second plate portion 312 being disposed in the electrical control area g, and the second plate portion 312 being connected to the BMS slave plate 60 in the electrical control area g.

Specifically, the first plate portion 311 is provided with a plurality of first signal input interfaces 313 on one side in the width direction of the case 10, the first plate portion 311 is provided with a plurality of second signal input interfaces 314 on the other side in the width direction of the case 10, the plurality of first signal input interfaces 313 are in one-to-one correspondence with the plurality of first battery modules 21, the plurality of second signal input interfaces 314 are in one-to-one correspondence with the plurality of second battery modules 22, the second plate portion 312 is provided with a plurality of signal output interfaces 315, the electric control area g is provided with the BMS slave board 60, and the plurality of signal output interfaces 315 are connected to the BMS slave board 60.

Therefore, on one hand, the signal receiving and transmitting are realized through the first plate part 311 of the PCB, the signal output is realized through the second plate part 312, the signal transmission instantaneity can be improved, and a safety mechanism can be arranged in the PCB, so that the circuit safety can be improved; on the other hand, the butt joint is realized through the interface, and the assembly efficiency can be effectively improved.

As shown in fig. 5 and 7, each of the first battery module 21 and the second battery module 22 is provided with a battery signal output interface 315, and the battery signal output interface 315 extends into the middle region c to be electrically connected to the first signal input interface 313 or the second signal input interface 314 on the PVB sheet located in the middle region c.

As shown in fig. 9, the PCB board includes: the PCB body 31A located on the upper layer and the buffer 31b located on the lower layer, and signal lines connecting the first signal input interface 313/the second signal input interface 314 and the signal output interface 315 are provided in the PCB body 31A.

It is understood that the buffer portion 31b is configured as a buffer cotton layer, and the upper and lower sides of the buffer cotton layer are provided with glue layers. Of course, the configuration of the buffer portion 31b of the embodiment of the present invention is not limited thereto, and in other embodiments, the buffer portion 31b is configured as an elastic buffer layer or as a rubber buffer layer.

Thus, the vibration can be effectively absorbed by the buffer portion 31b, so that the PCB can be prevented from resonating with the surrounding components (e.g., the lower case 12), and the service life of the PCB can be prolonged.

As shown in fig. 4, the first transverse reinforcing rib a1 and/or the second transverse reinforcing rib b1 is provided with a connecting plate 50 located above the avoiding groove f, and a PCB is disposed above the connecting plate 50. A mounting bracket 80 may be disposed between the signal connection plate 31 and the connection plate 50, and the signal connection plate 31 and the connection plate 50 may be fixed to upper and lower sides of the mounting bracket 80, respectively.

Therefore, the mounting bracket 80 is arranged between the connecting plate 50 and the PCB, the high-voltage wire harness is arranged in the mounting bracket 80, the PCB is arranged above the mounting bracket 80, and the cooling water pipe 90 is arranged in the avoiding groove f (namely below the connecting plate 50), so that the PCB and the high-voltage wire harness are spaced from the cooling water pipe 90, and the use safety of the battery pack 100 can be further improved.

The battery pack 100 shown in fig. 8 and 9 includes: the case 10, the battery module 20, the BDU70, and the BMS slave plate 60, the mounting bracket 80, the case 10 includes: a lower case 12 and an upper case 11 detachably provided on the lower case 12, the upper case 11 and the lower case 12 defining an accommodating space; the battery module 20 is arranged in the accommodating space; the BDU70 and the BMS slave plate 60 are arranged at the rear side of the accommodating space, the battery module 20 and the BMS slave plate 60 are connected through a PCB, the rear end and the front end of the shell 10 are respectively provided with a first high-voltage output interface 13 and a second high-voltage output interface 14, and the BDU70 and the second high-voltage output interface 14 are connected through a high-voltage copper bar 40; the mounting bracket 80 is disposed in the accommodating space and adapted to mount the PCB board and the high-voltage copper bar 40.

According to the battery pack 100 provided by the embodiment of the utility model, the mounting bracket 80 is arranged in the accommodating space, and the PCB (namely the low-voltage wire harness 30) and the high-voltage copper bar 40 (high-voltage wire harness) are fixed by fixing the mounting bracket 80 at the same time, so that the high-voltage wire harness and the low-voltage wire harness 30 are fixed more firmly and reliably in the accommodating space, and the high-voltage wire harness and the low-voltage wire harness 30 are prevented from being short-circuited with surrounding parts, thereby improving the use safety of the battery pack 100; and the arrangement of the high-voltage wire harness and the low-voltage wire harness 30 in the accommodating space is more regular and orderly, so that the space occupation can be reduced, and the energy density of the battery pack 100 can be improved.

It should be noted that the front and rear in the embodiment of the present invention are consistent with the front and rear in the vehicle direction.

As shown in fig. 8, the mounting bracket 80 includes: the PCB comprises an upper mounting bracket 81 and a lower mounting bracket 82, wherein the upper mounting bracket 81 is fixedly connected with the PCB; the lower mounting bracket 82 is fixedly connected with the upper mounting bracket 81, and a mounting space for mounting the high-voltage copper bar 40 is defined between the lower mounting bracket 82 and the upper mounting bracket 81. That is, the upper mounting bracket 81 is adapted to fix the PCB board, and the mounting space formed between the lower mounting bracket 82 and the upper mounting bracket 81 is adapted to fix the high-voltage copper bar 40. Thus, the PCB and the high-voltage copper bar 40 can be spaced apart while the PCB and the high-voltage copper bar 40 are fixed, so that the safety performance (electrical safety) of the battery pack 100 can be further improved.

Further, the upper mounting bracket 81 includes: go up mounting panel 811 and set up respectively in the left side and the right side of last mounting panel 811 and the first joint portion 812 of upwards extending, first joint portion 812 backstop is in the left side or the right side of PCB board and with the last side joint of PCB board fixed.

That is, the first catching portions 812 are provided at left and right sides of the upper mounting plate 811, and the PCB board is adapted to be mounted on the upper mounting plate 811 and is caught and fixed by the first catching portions 812 located at the left and right sides. Thus, the fixing effect of the upper mounting bracket 81 on the PCB is better, and meanwhile, the buffer part 31b is arranged between the upper mounting plate 811 and the PCB, so that the vibration of the PCB can be effectively reduced, and the service life of the PCB is prolonged.

As shown in fig. 9, the upper mounting bracket 81 is also fixed to the PCB board by a fastener. That is, the PCB is provided with a plurality of fixing holes adapted to pass the fastening members, and the fastening members pass through the fixing holes and are fixed to the upper mounting plate 811, so that the fixing stability of the PCB to the upper mounting bracket 81 can be further improved.

In the particular embodiment shown in fig. 9, the lower mounting bracket 82 includes: the lower mounting plate 821 and the second clamping part 822 that is arranged at the left side and the right side of the lower mounting plate 821 and extends upwards are clamped and fixed with the upper mounting bracket 81.

Specifically, the upper mounting plate 811 is provided with a fixing plate 813 extending downward, the fixing plate 813 is provided with a clamping groove, and the second clamping portion 822 is configured as a claw matched with the clamping groove.

Like this, along a plurality of second joint portion 822 of the length reverse extension of lower mounting plate 821 in to correspondingly the draw-in groove to can improve the stability of being connected of last installing support 81 and lower installing support 82, can reduce the Z of installing support 80 to length simultaneously.

As shown in fig. 2 and 9, the high-voltage copper bar 40 includes: the left high-voltage copper bar 41 and the right high-voltage copper bar 42 are provided with a plurality of supporting columns 823 which extend in the front-rear direction to divide the installation space into a left installation space for installing the left high-voltage copper bar 41 and a right installation space for installing the right high-voltage copper bar 42.

That is, the lower mounting plate 821 is provided with a supporting column 823 extending upwards, the free end of the supporting column 823 abuts against the lower side surface of the upper mounting plate 811, and the left high-voltage copper bar 41 and the right high-voltage copper bar 42 are spaced by the supporting column 823. Like this, not only can improve the structural strength of installing support 80, can avoid appearing the short circuit moreover between left high-voltage copper bar 41 and the right high-voltage copper bar 42 to improve the electrical safety of battery package 100.

As shown in fig. 9, the lower side of the lower mounting plate 821 is provided with an anti-glue overflow groove 824. Therefore, when the mounting bracket 80 is fixed with the connecting plate 50 by gluing, the excessive glue can be prevented from overflowing.

It will be appreciated that a mounting bracket 80 is also provided in the intermediate region c. And the technical effect that the mounting bracket 80 can achieve when being arranged in the middle area c is consistent with the technical effect that the other components can achieve when being arranged in the middle area c, which is not described herein again.

The battery pack 100 according to the present embodiment has the following advantages:

(1) the lower case 12 of the battery pack 100 is divided into regions, and the components to be mounted in the receiving space of the battery pack 100 are mounted in the corresponding regions, respectively, so that the Z-direction space occupation of the battery pack 100 can be effectively reduced, and the energy density of the battery pack 100 can be improved.

(2) Through setting up connecting plate 50, first horizontal strengthening rib a1 and second horizontal strengthening rib b1, under the prerequisite that improves the fixed effect to battery module 20, can also avoid the first horizontal strengthening rib a1 and the regional structural strength of dodging groove f that second horizontal strengthening rib b1 formed not enough, support the PCB board effectively, not condenser tube 90 provides the region of setting up.

(3) The signal is collected and transmitted through the PCB, the vibration of the PCB is reduced through the buffer part 31b, the crossing and the quantity of the wiring harnesses can be reduced, the low-voltage wiring harnesses 30 can be protected in multiple ways, the electrical safety of the battery pack 100 is improved, the space utilization rate of the battery pack 100 is improved, the assembly operation between signal input and output interfaces is simple, and the assembly efficiency is improved;

(4) the battery signal output interface 315 of the battery module 20 extends out of the battery module 20, which saves the connecting members between the module and the PCB, and has simple operation, easy assembly, reduced cost and weight of the battery pack 100.

(5) The unique mounting bracket 80 is designed, so that on one hand, short circuit of the high-voltage wire harness and the low-voltage wire harness 30 can be avoided, and the safety of the electric appliance of the battery pack 100 is improved; on the other hand, the high-voltage wiring harness and the low-voltage wiring harness 30 are more regular and standard in routing, the space occupation of the wiring harnesses in the battery pack 100 can be effectively reduced, the structure of the battery pack 100 is more compact, and therefore the energy density of the battery pack 100 can be improved.

(6) The cooling water pipe 90 is designed to be in parallel connection with two inlets and two outlets, and the Z-direction length of the cooling water pipe 90 is reduced on the premise of ensuring the inlet and outlet flow and pressure balance of cooling liquid.

To sum up, the battery pack 100 of the embodiment of the present invention adopts the PCB board to perform low voltage signal acquisition and transmission, and meanwhile, the space occupation in the Z direction of the battery pack 100 is reduced by measures or structural improvements such as the arrangement of the lower case 12, the connection board 50, the first transverse reinforcing rib a1, the second transverse reinforcing rib b1, and the cooling water pipe 90, and the operation of electrically connecting the battery pack 100 is simple, and the high voltage wire harness and the low voltage wire harness 30 are not crossed, so that the electrical safety and reliability are improved; the scheme of the battery pack 100 can achieve higher energy density and space utilization rate, and the battery pack 100 has higher safety and reliability.

According to the second aspect of the present invention, the vehicle includes the battery pack 100 described in the above embodiments.

It can be understood that the vehicle according to the second aspect of the present invention has the battery pack 100, and the technical progress of the vehicle is consistent with the battery pack 100, which is not described herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A battery pack (100), comprising:

a housing (10), the housing (10) comprising: a lower case (12) and an upper case (11) detachably provided on the lower case (12), the lower case (12) being provided with a first arrangement region (a), a second arrangement region (b), and an intermediate region (c) provided between the first arrangement region (a) and the second arrangement region (b);

a first battery module (21) and a second battery module (22), the first battery module (21) being disposed in the first arrangement region (a), the second battery module (22) being disposed in the second arrangement region (b);

the high-voltage wire harness and the low-voltage wire harness (30) are arranged in the middle area (c), the high-voltage wire harness is connected with the first battery module (21) and the second battery module (22), and the low-voltage wire harness (30) is connected with the first battery module (21) and the second battery module (22).

2. The battery pack (100) according to claim 1, wherein the first arrangement region (a) is provided with a plurality of first lateral reinforcing ribs (a1), each of the first lateral reinforcing ribs (a1) extends in a width direction of the case (10), and a plurality of the first lateral reinforcing ribs (a1) are arranged at intervals in a length direction of the case (10), adjacent two of the first lateral reinforcing ribs (a1) defining a first battery module mounting groove (d) therebetween;

the second arrangement region (b) is provided with a plurality of second transverse reinforcing ribs (b1), each of the second transverse reinforcing ribs (b1) extends in the width direction of the housing (10), a plurality of second transverse reinforcing ribs (b1) are arranged at intervals in the length direction of the housing (10), and adjacent two of the second transverse reinforcing ribs (b1) define a second battery module mounting groove (e).

3. The battery pack (100) according to claim 2, wherein a plurality of the first lateral reinforcing ribs (a1) and a plurality of the second lateral reinforcing ribs (b1) correspond one to one with each other in the width direction of the case (10).

4. The battery pack (100) according to claim 3, wherein the intermediate region (c) is further provided with a cooling water pipe (90) adapted to cool the first battery module (21) and the second battery module (22);

each first transverse reinforcing rib (a1) and the corresponding second transverse reinforcing rib (b1) are integrally formed, and an avoidance structure for the cooling water pipe (90) to pass through is arranged between each first transverse reinforcing rib (a1) and the corresponding second transverse reinforcing rib (b 1).

5. The battery pack (100) according to claim 4, wherein the escape structure is configured as an escape groove (f) having an open upper end, and the first transverse reinforcing rib (a1) or/and the second transverse reinforcing rib (b1) is provided with a connection plate (50) located above the escape groove (f).

6. The battery pack (100) according to claim 5, wherein the connection plate (50) comprises: the novel shell comprises two transverse plates (51) and a longitudinal plate (52) arranged between the two transverse plates (51), wherein the two transverse plates (51) extend along the transverse direction of the shell (10) and the longitudinal plate (52) extends along the longitudinal direction of the shell (10), and the two transverse plates (51) and the longitudinal plate (52) are fixed with the corresponding first transverse reinforcing ribs (a1) or/and second transverse reinforcing ribs (b1) respectively.

7. Battery pack (100) according to claim 6, wherein an intermediate plate (53) is further arranged on the longitudinal plate (52), said intermediate plate (53) extending in the transverse direction of the housing (10) and being fixed with the corresponding first transverse bead (a1) or/and second transverse bead (b 1).

8. The battery pack (100) of claim 5, wherein the low voltage wire harness (30) comprises: and a signal connection plate (31) on which the signal lines are mounted is further disposed above the connection plate (50), and the signal lines are adapted to transmit low-voltage signals of the first and second battery modules (21, 22) to a BMS slave board (60).

9. A vehicle, characterized by comprising a battery pack (100) according to any one of claims 1-8.

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