CN111710809B - Battery pack box and battery pack - Google Patents
Battery pack box and battery pack Download PDFInfo
- Publication number
- CN111710809B CN111710809B CN202010527224.3A CN202010527224A CN111710809B CN 111710809 B CN111710809 B CN 111710809B CN 202010527224 A CN202010527224 A CN 202010527224A CN 111710809 B CN111710809 B CN 111710809B
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- Prior art keywords
- box body
- lower box
- battery pack
- module
- skirt edge
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- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 33
- 238000003825 pressing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005728 strengthening Methods 0.000 abstract 2
- 239000012634 fragment Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention belongs to the technical field of electric automobiles, and particularly relates to a battery pack box body and a battery pack, wherein a first skirt edge is arranged on the periphery of an upper box cover, a second skirt edge is arranged on the periphery of the top of a lower box body, the upper box cover and the lower box body are matched and combined together in a mode that the first skirt edge and the second skirt edge are mutually overlapped and fixed, and a sealing strip is arranged between the first skirt edge and the second skirt edge; the module installation roof beam is installed in the interior upside of lower box, has the mounting of fixed battery module, and the both ends of module layering are equipped with L fixed ear, stamping forming cubic strengthening rib and bar strengthening rib on the interior bottom surface of lower box. The layering structure is fixed, the strength is high, the stability is good, the safety performance of the system is improved, the mounting process is simple, the weight is light, and the efficiency is high; the battery pack box adopts envelope structure, and side fossil fragments high design is at battery pack electric core focus horizontal plane height, increases lower box intensity simultaneously, and the fixed horizontal plane arm of force of battery module is zero, reduces the pulling crack of moment to the battery pack box and destroys.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a battery pack box and a battery pack.
Background
With the increasing maturity and perfection of electric automobile technology, electric automobile is widely used in daily life, and power battery box is as electric automobile's core part, and its manufacturing process includes: a plurality of batteries are connected in series and/or in parallel to form a battery module, and then the plurality of battery modules are connected in series and/or in parallel to form a battery box.
The continuation of journey mileage is the bottleneck of electric automobile always, and it is unavoidable at present to install a plurality of battery module combinations in the battery loading box and supply power, separates through the installing support between the battery module, nevertheless has following problem like this: on the one hand, in the prior art, the box body has a large weight so as to ensure enough strength; on the other hand, the mounting brackets are welded on the keel structure, and the strength performance of the box body is guaranteed through the keel structure, but the overall weight of the box body is further excessively heavy, and the design requirement of the box body on the high energy density of the battery module of the electric automobile is conflicting, so that the technical problem to be solved is solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a battery pack box body.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The battery pack box comprises an upper box cover, a lower box body, sealing strips, a module mounting beam and a module pressing strip, wherein a first skirt edge protruding outwards is arranged on the periphery of the upper box cover, a second skirt edge protruding outwards is arranged on the periphery of the top of the lower box body, the upper box cover and the lower box body are matched and combined together in a mode that the first skirt edge and the second skirt edge are mutually overlapped and fixed, and the sealing strips are tightly arranged between the first skirt edge and the second skirt edge;
The module mounting beam is arranged on the inner upper side of the lower box body and is provided with a fixing piece for fixing the battery module, two ends of the module pressing strip are provided with L-shaped fixing lugs, screw holes are formed in the L-shaped fixing lugs, a limiting screw sleeve is fixed in the lower box body, and the module pressing strip is fixedly connected in the limiting screw sleeve through a bolt penetrating the screw holes;
the inner bottom surface of the lower box body is provided with blocky reinforcing ribs which are uniformly distributed in a rectangular array in a stamping mode, and strip-shaped reinforcing ribs which are arranged at intervals along the width direction of the lower box body.
Further, the battery pack box comprises a fixing support, wherein the fixing support is fixedly connected with the lower box body, and the battery pack box body is connected to the vehicle body through the fixing support.
Still further, the fixed bolster divide into two sets of support I, a set of support II and a set of support III (14), and wherein, a set of support I is fixed first shirt rim below on the lower box front end, another set of support I is fixed first shirt rim below on the left and right sides in lower box front, support II symmetry is fixed on the lower box middle section side, support III symmetry is fixed on the back end side of lower box.
Further, the surface of the upper case cover adopts a local deep drawing structure to form a convex segment-shaped reinforcing rib.
Further, a total positive output port, a total negative output port, a communication acquisition port and an equipotential end point are arranged on the rear end face of the lower box body, and a high-voltage maintenance switch is arranged on the side face of the lower box body.
Further, the inner side surface of the lower box body is provided with a side keel in a stamping mode, and the vertical distance between the side keel and the bottom surface of the lower box body is the same as the vertical distance between the horizontal plane where the gravity center of the battery module is located and the bottom surface of the lower box body.
Further, the upper case cover and the lower case body are formed by low-carbon steel deep drawing.
Further, the thickness of the upper case cover and the lower case body is 1.2mm, the materials of the upper case cover and the lower case body are HPSC, DC01 or DC06, and the materials of the block reinforcing ribs, the bar reinforcing ribs and the side keels are HC340LA.
Further, the thickness of the block-shaped reinforcing ribs and the bar-shaped reinforcing ribs is 1.8mm.
Based on a general inventive concept, another object of the present invention is to provide a battery pack, including a battery module and the battery pack case described above, where the battery pack case is placed in the lower case, and a plurality of module press bars are uniformly arranged and pressed on the battery module, the module press bars are fixed with the lower case, and a high-voltage maintenance switch of the lower case is connected in series with a module of the battery module, and a total positive wire harness, a total negative wire harness, an acquisition wire harness of the module of the battery module are connected with a total positive output port, a total negative output port, and a communication acquisition port of the lower case in one-to-one correspondence.
The invention has the advantages and positive effects that:
(1) The large battery pack is designed, the battery packs are arranged along the width direction of the battery pack box body, the space utilization rate of the box body can be improved, the module pressing strips are fixed on two sides of the battery pack (battery module), the pressing strip structure is fixed, the strength is high, the stability is good, the safety performance of the system is improved, the installation process is simple, the weight is light, and the efficiency is high;
(2) The battery pack box body adopts an enveloping structure design, the fixed positions of the block-shaped reinforcing ribs and the bar-shaped reinforcing ribs are designed, the height of the side keels is designed at the height of the gravity center horizontal plane of the battery pack cell, the strength of the lower box body is increased, and meanwhile, the arm of force of the fixed horizontal plane of the battery module is zero, so that the pull-apart damage of the moment to the battery pack box body is reduced;
(3) The bottom of the lower box body adopts a stamping process to stamp the reinforcing ribs, the bottom of the box body is locally reinforced, the strength of the box body can be ensured, and meanwhile, no material is added, so that the light design purpose is achieved; the whole lower box body adopts a one-time stamping and stretching forming process, the consistency of the box body is good, the planeness of the waterproof surface is better ensured, and the waterproof performance is better.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic view of the structure of the lower case;
the labels of figures 1-3 have the following meanings: 1-upper box cover, 2-lower box body, 3-sealing strip, 4-module mounting beam, 5-module pressing strip, 6-first skirt edge, 7-second skirt edge, 8-battery module, 9-L-shaped fixing lug, 10-block reinforcing rib, 11-bar reinforcing rib, 12-bracket I, 13-bracket II, 14-bracket III, 15-segment reinforcing rib, 16-total positive output port, 17-total negative output port, 18-communication acquisition port, 19-equipotential end point, 20-high-voltage maintenance switch and 21-side keel.
Detailed Description
In the description of the present invention, it should be understood that the directions or positional relationships indicated by "upper", "lower", "top", "bottom", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and are not indicative or implying that the parts referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
1-3, The battery pack box comprises an upper box cover 1, a lower box body 2, sealing strips 3, module mounting beams 4 and module pressing strips 5, wherein a first skirt edge 6 protruding outwards is arranged on the periphery of the upper box cover 1, a second skirt edge 7 protruding outwards is arranged on the periphery of the top of the lower box body 2, the upper box cover 1 and the lower box body 2 are matched and combined together in a mode that the first skirt edge 6 and the second skirt edge 7 are mutually overlapped and fixed, and the sealing strips 3 are tightly arranged between the first skirt edge 6 and the second skirt edge 7;
The first skirt edge 6 of the upper case cover 1 is provided with a first through hole, the second skirt edge 7 of the lower case body 2 is provided with a second through hole, the matched first through hole and second through hole correspond to each other, and a bolt can pass through the first through hole and the second through hole to mount the battery pack case body on the vehicle body; wherein, the sealing strip 3 is also provided with through holes corresponding to the first through holes and the second through holes;
the module mounting beam 4 is mounted on the inner upper side of the lower box body 2 and is provided with a fixing part for fixing a battery module 8, L-shaped fixing lugs 9 are arranged at two ends of the module pressing strip 5, screw holes are formed in the L-shaped fixing lugs 9, a limit screw sleeve is fixed in the lower box body 2, and the module pressing strip 5 is fixedly connected in the limit screw sleeve through a bolt penetrating screw hole;
the inner bottom surface of the lower box body 2 is provided with blocky reinforcing ribs 10 which are uniformly distributed in a rectangular array and strip-shaped reinforcing ribs 11 which are arranged at intervals along the width direction of the lower box body 2 in a stamping mode;
The lower box body 2 forms the block-shaped reinforcing ribs 10 and the bar-shaped reinforcing ribs 11 through stamping in the processing process, so that the structural strength of the lower box body 2 is increased, and the structure of the lower box body 2 is stable.
The embodiment of the invention further comprises a fixing support, wherein the fixing support is fixedly connected with the lower box body 2, and the battery pack box body is connected to the vehicle body through the fixing support.
The fixing support is divided into two groups of supports I12, a group of supports II 13 and a group of supports III 14, wherein one group of supports I12 is fixed below a first skirt edge (6) on the front end of the lower box body 2, the other group of supports I12 is fixed below the first skirt edge 6 on the left side and the right side in front of the lower box body 2, the supports II 13 are symmetrically fixed on the side surface of the middle section of the lower box body 2, and the supports III 14 are symmetrically fixed on the side surface of the rear section of the lower box body 2.
The surface of the upper case cover 1 adopts a local deep drawing structure to form a convex segment-shaped reinforcing rib 15.
The rear end face of the lower box body 2 is provided with a total positive output port 16, a total negative output port 17, a communication acquisition port 18 and an equipotential end point 19, the side face of the lower box body 2 is provided with a high-voltage maintenance switch 20, and the equipotential end point 19 is provided with a threaded hole.
The side keels 21 are formed on the inner side surface of the lower box body 2 in a stamping mode, and the vertical distance between the side keels 21 and the bottom surface of the lower box body 2 is the same as the vertical distance between the horizontal plane where the gravity center of the battery module 8 is located and the bottom surface of the lower box body 2. The side keels 21 are matched with the module mounting beams 4, the block-shaped reinforcing ribs 10 and the bar-shaped reinforcing ribs 11 to ensure the structural stability of the lower box body 2.
The battery pack box body is structurally improved, strength requirements are guaranteed, so that the reduction of the box body weight can be considered, the upper box cover 1 and the lower box body 2 are formed by low-carbon steel deep drawing and stamping, high-strength steel is not adopted, cost can be reduced, and the purpose of improving the energy density of the battery pack under the premise of meeting strength is achieved.
The battery pack case body can be divided into a bearing part and a sealing part, wherein the bearing part comprises a block-shaped reinforcing rib 10, a bar-shaped reinforcing rib 11 and a side keel 21 at the bottom of the lower case body 2, and materials with slightly higher strength, such as HC340LA and the like, can be selected as materials for bearing all weights of the battery pack and the case body. The sealing part comprises an upper box cover 1, a lower box body 2 and a sealing strip 3, and the sealing part can be made of materials with low molding strength, such as HPSC, DC01, DC06 and the like, because the sealing part is not stressed.
The thickness of the upper case cover 1 and the lower case body 2 is 1.2mm, the materials of the upper case cover 1 and the lower case body 2 are HPSC, and the materials of the block reinforcing ribs 10, the bar reinforcing ribs 11 and the side keels 21 are HC340LA. The thickness of the block-shaped reinforcing ribs 10 and the bar-shaped reinforcing ribs 11 is 1.8mm.
Example 2
The utility model provides a battery package, as shown in fig. 1, includes battery module 8 and embodiment 1's battery package box, the battery package box is placed in lower box 2, and a plurality of module layering 5 is evenly distributed to paste and is pressed on the battery module 8, module layering 5 is fixed with lower box 2, the high-pressure maintenance switch 20 of lower box 2 is established ties with the module of battery module 8, the total positive pencil of the module of battery module 8, total negative pencil, gather the pencil with total positive output port 16, total negative output port 17, the communication acquisition port 18 one-to-one of lower box 2 are connected.
The battery pack box body can be internally provided with a component positioning and mounting module, and a battery management system is mounted on the component positioning and mounting module.
What is not described in detail in the present specification is all that is known to those skilled in the art. Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets, welding and the like in the prior art, machines, parts and equipment adopt conventional models in the prior art, and circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
The above embodiments are merely preferred embodiments of the present invention, and any simple modification, modification and substitution changes made to the above embodiments according to the technical substance of the present invention are all within the scope of the technical solution of the present invention.
Claims (7)
1. The battery pack box body is characterized by comprising an upper box cover (1), a lower box body (2), sealing strips (3), a module mounting beam (4) and a module pressing strip (5), wherein a first skirt edge (6) protruding outwards is arranged on the periphery of the upper box cover (1), a second skirt edge (7) protruding outwards is arranged on the periphery of the top of the lower box body (2), the upper box cover (1) and the lower box body (2) are combined together in a matched mode that the first skirt edge (6) and the second skirt edge (7) are mutually overlapped and fixed, and the sealing strips (3) are tightly arranged between the first skirt edge (6) and the second skirt edge (7);
the battery pack box body further comprises a fixed bracket, the fixed bracket is fixedly connected with the lower box body (2), and the battery pack box body is connected to the vehicle body through the fixed bracket;
the module mounting beam (4) is mounted on the inner upper side of the lower box body (2) and is provided with a fixing part for fixing the battery module (8), L-shaped fixing lugs (9) are arranged at two ends of the module pressing strip (5), screw holes are formed in the L-shaped fixing lugs (9), a limit screw sleeve is fixed in the lower box body (2), and the module pressing strip (5) is fixedly connected in the limit screw sleeve through a bolt penetrating screw hole;
The inner bottom surface of the lower box body (2) is provided with blocky reinforcing ribs (10) which are uniformly distributed in a rectangular array in a stamping mode, and strip-shaped reinforcing ribs (11) which are arranged at intervals along the width direction of the lower box body (2);
The fixing support is divided into two groups of supports I (12), a group of supports II (13) and a group of supports III (14), wherein one group of supports I (12) is fixed below a first skirt edge (6) on the front end of the lower box body (2), the other group of supports I (12) is fixed below the first skirt edge (6) on the front left side and the right side of the lower box body (2), the supports II (13) are symmetrically fixed on the side surface of the middle section of the lower box body (2), and the supports III (14) are symmetrically fixed on the side surface of the rear section of the lower box body (2);
The inner side face stamping forming of the lower box body (2) is provided with a side keel (21), and the vertical distance between the side keel (21) and the bottom face of the lower box body (2) is the same as the vertical distance between the horizontal plane where the gravity center of the battery module (8) is located and the bottom face of the lower box body (2).
2. A battery pack case according to claim 1, wherein the surface of the upper case cover (1) is formed with a raised segment-shaped reinforcing rib (15) using a partial drawing structure.
3. The battery pack box according to claim 1, wherein a total positive output port (16), a total negative output port (17), a communication acquisition port (18) and an equipotential end point (19) are arranged on the rear end face of the lower box body (2), and a high-voltage maintenance switch (20) is arranged on the side face of the lower box body (2).
4. The battery pack case according to claim 1, wherein the upper case cover (1) and the lower case (2) are formed by deep drawing with low carbon steel.
5. The battery pack case according to claim 1, wherein the thickness of the upper case cover (1) and the lower case (2) is 1.2mm, the materials of the upper case cover (1) and the lower case (2) are DC01 material or DC06 material, and the materials of the block-shaped reinforcing ribs (10), the bar-shaped reinforcing ribs (11) and the side keels (21) are HC340LA material.
6. A battery pack case according to claim 1, wherein the thickness of the block-shaped reinforcing ribs (10) and the bar-shaped reinforcing ribs (11) is 1.8mm.
7. The battery pack is characterized by comprising a battery module (8) and the battery pack box body according to any one of claims 1-6, wherein the battery pack box body is placed in the lower box body (2), a plurality of module pressing strips (5) are uniformly distributed and pressed on the battery module (8), the module pressing strips (5) are fixed with the lower box body (2), a high-voltage maintenance switch (20) of the lower box body (2) is connected with a module of the battery module (8) in series, and a total positive wire harness, a total negative wire harness and a collection wire harness of the module of the battery module (8) are connected with a total positive output port (16), a total negative output port (17) and a communication collection port (18) of the lower box body (2) in a one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010527224.3A CN111710809B (en) | 2020-06-11 | 2020-06-11 | Battery pack box and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010527224.3A CN111710809B (en) | 2020-06-11 | 2020-06-11 | Battery pack box and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111710809A CN111710809A (en) | 2020-09-25 |
| CN111710809B true CN111710809B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010527224.3A Active CN111710809B (en) | 2020-06-11 | 2020-06-11 | Battery pack box and battery pack |
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| Country | Link |
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| CN (1) | CN111710809B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579622A (en) * | 2021-09-13 | 2021-11-02 | 苏州博劲丰机械科技有限公司 | Automatic welding and positioning device for automobile new energy battery pack box body |
| CN217281110U (en) * | 2021-12-20 | 2022-08-23 | 奥动新能源汽车科技有限公司 | Connector reinforcing structure and battery box comprising same |
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| CN202115528U (en) * | 2011-05-04 | 2012-01-18 | 青岛欧特美股份有限公司 | One-piece sidewall guard board and vehicle using the same |
| WO2017117720A1 (en) * | 2016-01-05 | 2017-07-13 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN109888148A (en) * | 2019-04-10 | 2019-06-14 | 江西安驰新能源科技有限公司 | A kind of Battery case |
| CN110277520A (en) * | 2019-06-14 | 2019-09-24 | 湖南科霸汽车动力电池有限责任公司 | A kind of battery pack cabinet and battery pack |
| CN209766506U (en) * | 2019-04-22 | 2019-12-10 | 北京汽车股份有限公司 | Storage battery installation tray and car |
| CN212113827U (en) * | 2020-06-11 | 2020-12-08 | 江西安驰新能源科技有限公司 | Battery pack box and battery pack |
-
2020
- 2020-06-11 CN CN202010527224.3A patent/CN111710809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202115528U (en) * | 2011-05-04 | 2012-01-18 | 青岛欧特美股份有限公司 | One-piece sidewall guard board and vehicle using the same |
| WO2017117720A1 (en) * | 2016-01-05 | 2017-07-13 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN109888148A (en) * | 2019-04-10 | 2019-06-14 | 江西安驰新能源科技有限公司 | A kind of Battery case |
| CN209766506U (en) * | 2019-04-22 | 2019-12-10 | 北京汽车股份有限公司 | Storage battery installation tray and car |
| CN110277520A (en) * | 2019-06-14 | 2019-09-24 | 湖南科霸汽车动力电池有限责任公司 | A kind of battery pack cabinet and battery pack |
| CN212113827U (en) * | 2020-06-11 | 2020-12-08 | 江西安驰新能源科技有限公司 | Battery pack box and battery pack |
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| CN111710809A (en) | 2020-09-25 |
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