CN111900279A - Battery box and battery box body - Google Patents
Battery box and battery box body Download PDFInfo
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- CN111900279A CN111900279A CN201910367987.3A CN201910367987A CN111900279A CN 111900279 A CN111900279 A CN 111900279A CN 201910367987 A CN201910367987 A CN 201910367987A CN 111900279 A CN111900279 A CN 111900279A
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Abstract
The invention relates to the technical field of power batteries, in particular to a battery box and a battery box body. The battery box body comprises a lower box body, an upper cover, an anti-collision clapboard and a discrete type convex structure, wherein the lower box body is surrounded by box walls; the anti-collision clapboard is fixed in the lower box body, is positioned between the grouped electric cores and the box walls when in use, and is provided with convex ribs on the outer side surface facing to the corresponding box walls; the discrete raised structures are located between adjacent ribs. The protruding muscle is out of shape after suffering external striking or extrusion, absorb external striking or extrusion energy through the deformation of self, the blank area that utilizes between the adjacent protruding muscle sets up the protruding structure of discrete, the protruding structure of discrete also can be through the deformation of self absorb external striking or extrusion energy, the anti striking or the extruded ability of battery box have further been improved, the anticollision baffle, the space that protruding muscle and the protruding structure of discrete occupy is less, also can guarantee that the battery box that uses this kind of battery box has higher energy density.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a battery box and a battery box body.
Background
The battery box is used as a power source, and when the battery box is installed on a vehicle, the installation stability and good impact resistance of the battery box are required to be ensured, and particularly, when the vehicle runs on a bumpy road surface, the normal operation of the battery box is ensured. A common approach is to assemble plastic anti-collision protection plates at the positive and negative output poles of the battery cells in the battery box, but this approach has more limitations, such as: the anti-collision plate has a small protection area, can generally only protect the positions of the positive output electrode and the negative output electrode, and can not effectively protect the battery cell when the battery box is impacted by external force in other directions to generate extrusion, so that the battery cell can generate liquid leakage and even fire explosion; the plastic anti-collision plate needs to be produced by a special die, so that the die opening cost is high; the plastic anti-collision plate is generally thick in thickness so as to have good anti-extrusion performance, so that a large installation space is needed, if the space of the battery box is limited, the plastic installation plate cannot be installed, and if enough installation space is reserved in the battery box, the energy density of the battery pack is reduced, and the product competitiveness is reduced; the anti-collision plate can only passively receive external force impact, the impact is resisted by the strength of the self material, and after the self material is plastically deformed, the anti-collision capacity is reduced.
In view of the above situation, chinese utility model patent document No. CN206225423U discloses a battery box and an electric vehicle. At least one side of this battery box is provided with energy-absorbing part and anticollision part, and is concrete, and the anticollision part is crashproof roof beam or the hollow structure or the U-shaped groove structure that form by at least two-layer metal sheet, and the anticollision part sets up in the most periphery of battery box, and the energy-absorbing part sets up between anticollision part and box. The anti-collision component and the energy absorption component can better absorb impact or extrusion from the outside, and the battery box is better protected.
However, the battery box still has certain disadvantages: anticollision part and energy-absorbing part all set up in the periphery of battery box, and the hollow structure that two-layer metal sheet formed can occupy great space, have directly increased the volume and the occupation space of whole battery box, under the limited condition of battery box installation space, have led to placing the battery core energy density in groups in the battery box and have reduced.
Disclosure of Invention
The invention aims to provide a battery box body with high energy density and good anti-collision performance, and the invention also aims to provide a battery box using the battery box body, so that the battery box using the battery box body not only has good anti-collision performance, but also has higher energy density.
In order to achieve the purpose, the battery box body adopts the following technical scheme:
a battery box body, which comprises
The lower box body is surrounded by box walls;
an upper cover;
the anti-collision partition plate is fixed in the lower box body, is positioned between the grouped electric cores and the box walls when in use, and is provided with convex ribs on the outer side surface facing to the corresponding box walls;
and the discrete convex structures are positioned between the adjacent convex ribs.
The beneficial effects of the above technical scheme are: the self strength of the anti-collision partition plate enables the anti-collision partition plate to absorb impact or extrusion from the outside to a certain extent, and a group of battery cells placed in the lower box body are protected; the convex ribs arranged on the anti-collision partition plate deform after being impacted or extruded by the outside, and absorb the energy of the impact or extrusion by the deformation of the convex ribs, so that the grouped electric cores placed in the lower box body are further protected; in order to avoid protruding muscle's intensity not enough, the blank area that utilizes between the adjacent protruding muscle sets up the protruding structure of discrete type, the protruding structure of discrete type also can absorb external striking or extrusion energy through the deformation of self, the anti striking or the extruded ability of battery box have further been improved, furthermore, the anticollision baffle, the space that protruding muscle and the protruding structure of discrete type occupy is less, can not crowd the space of placing in the battery core of placing in the box under, also can guarantee that the battery box that uses this kind of battery box has higher energy density.
Furthermore, the convex rib is a U-shaped convex rib integrally formed on the anti-collision clapboard through stamping. The U-shaped convex rib is of a thin-wall structure, so that deformation and energy absorption are easier.
Further, the rib extends in the up-down direction. The protruding muscle that the direction extended arrangement from top to bottom makes crashproof baffle crashproof or extruded ability more even in the ascending crashproof of upper and lower side to better protection is used for placing the battery core in groups in the box down.
Further, the discrete type convex structures are uniformly arranged at intervals along the up-down direction. The anti-collision partition plates are evenly arranged at intervals in the up-down direction, so that the anti-collision or extrusion capacity of the anti-collision partition plates in the up-down direction is more even, and the anti-collision partition plates are used for better protection of grouped battery cells placed in the lower box body.
Further, the discrete type protruding structure is a column protrusion integrally formed on the anti-collision partition plate through stamping. The column protrusion is formed through a stamping process, and the processing process is simple.
Further, the outer side surface of the discrete type convex structure is flush with the outer side surface of the convex rib. Set up the parallel and level and make the protruding structure of discrete can bear external striking or extrusion simultaneously with protruding muscle, when avoiding the two not parallel and level, the protruding structure of discrete is comparatively close to one of the tank wall in two with protruding muscle and is experienced great striking or extrusion earlier and be out of shape.
Further, the medial surface of anticollision baffle is used for when using with electric core contact in groups, the protruding muscle of lateral surface with correspond the tank wall contact to make anticollision baffle press from both sides and press from both sides between tank wall and electric core in groups. The anti-collision partition plate is contacted with the grouped battery cores so that the anti-collision partition plate is arranged more tightly, the occupied space in the lower box body is smaller, and the energy density of the battery box is higher.
Furthermore, lower box is the rectangle structure, and its leading flank is equipped with battery core wiring structure in groups, and the left and right tank wall of lower box and the corresponding inboard of back tank wall all are provided with crashproof baffle, crashproof baffle connect gradually. Under the condition that does not influence the wiring of the battery cell in groups of box leading flank, the setting of a plurality of anticollision baffles can provide the protection to a plurality of sides of electric core in groups, further protects electric core in groups.
In order to achieve the purpose, the battery box adopts the following technical scheme:
a battery box comprises a battery box body and a group of battery cores fixedly installed in the battery box body, wherein the battery box body comprises
The lower box body is surrounded by box walls;
an upper cover;
the anti-collision partition plate is fixed in the lower box body and positioned between the grouped electric cores and the box walls, and convex ribs are arranged on the outer side faces of the anti-collision partition plate facing to the corresponding box walls;
and the discrete convex structures are positioned between the adjacent convex ribs.
The beneficial effects of the above technical scheme are: the self strength of the anti-collision partition plate enables the anti-collision partition plate to absorb impact or extrusion from the outside to a certain extent, and the grouped electric cores placed in the lower box body are protected; the convex ribs arranged on the anti-collision partition plate deform after being impacted or extruded by the outside, and absorb the energy of the impact or extrusion by the deformation of the convex ribs, so that the grouped electric cores placed in the lower box body are further protected; in order to avoid protruding muscle's intensity not enough, the blank area that utilizes between the adjacent protruding muscle sets up the protruding structure of discrete type, the protruding structure of discrete type also can absorb external striking or extrusion energy through the deformation of self, the anti striking or the extruded ability of battery box has further been improved, in addition, the anticollision baffle, the space that protruding muscle and the protruding structure of discrete type occupy is less, can not crowd the space of placing of the group electric core of placing in the lower box, also can guarantee that the battery box has higher energy density.
Furthermore, the convex rib is a U-shaped convex rib integrally formed on the anti-collision clapboard through stamping. The U-shaped convex rib is of a thin-wall structure, so that deformation and energy absorption are easier.
Further, the rib extends in the up-down direction. The protruding muscle that the direction extended arrangement from top to bottom makes crashproof baffle crashproof or extruded ability more even in the ascending crashproof of upper and lower side to better protection is used for placing the battery core in groups in the box down.
Further, the discrete type convex structures are uniformly arranged at intervals along the up-down direction. The anti-collision partition plates are evenly arranged at intervals in the up-down direction, so that the anti-collision or extrusion capacity of the anti-collision partition plates in the up-down direction is more even, and the anti-collision partition plates are used for better protection of grouped battery cells placed in the lower box body.
Further, the discrete type protruding structure is a column protrusion integrally formed on the anti-collision partition plate through stamping. The column protrusion is formed through a stamping process, and the processing process is simple.
Further, the outer side surface of the discrete type convex structure is flush with the outer side surface of the convex rib. Set up the parallel and level and make the protruding structure of discrete can bear external striking or extrusion simultaneously with protruding muscle, when avoiding the two not parallel and level, the protruding structure of discrete is comparatively close to one of the tank wall in two with protruding muscle and is experienced great striking or extrusion earlier and be out of shape.
Further, the medial surface of anticollision baffle is used for when using with electric core contact in groups, the protruding muscle of lateral surface with correspond the tank wall contact to make anticollision baffle press from both sides and press from both sides between tank wall and electric core in groups. The anti-collision partition plate is contacted with the grouped battery cores so that the anti-collision partition plate is arranged more tightly, the occupied space in the lower box body is smaller, and the energy density of the battery box is higher.
Furthermore, lower box is the rectangle structure, and its leading flank is equipped with battery core wiring structure in groups, and the left and right tank wall of lower box and the corresponding inboard of back tank wall all are provided with crashproof baffle, crashproof baffle connect gradually. Under the condition that does not influence the wiring of the battery cell in groups of box leading flank, the setting of a plurality of anticollision baffles can provide the protection to a plurality of sides of electric core in groups, further protects electric core in groups.
Drawings
FIG. 1 is a schematic structural view of a crash barrier in a first embodiment of a battery box according to the present invention;
FIG. 2 is a schematic structural view of a crash barrier in a second embodiment of the battery box of the present invention;
FIG. 3 is a schematic view showing the assembly of the crash barrier and the case body of the battery case according to the second embodiment of the present invention;
FIG. 4 is a schematic structural view of a crash barrier in a third embodiment of a battery box according to the present invention;
description of reference numerals: 2-anti-collision partition board, 201-board wall, 202-convex rib, 3-reinforcing board and 5-column convex.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
the first embodiment of the battery box of the invention:
the battery box comprises a battery box body, the battery box body comprises a lower box body and an upper cover (not shown in the figure), the lower box body is enclosed by box walls, anti-collision partition plates 2 are fixed between groups of battery cells and the box walls in the lower box body, as shown in figure 1, convex ribs 202 are arranged on the outer side surfaces, facing the box walls, of plate walls 201 of the anti-collision partition plates 2, discrete convex structures are further arranged between adjacent convex ribs 202, the convex ribs 202 deform after being impacted or extruded by the outside, and absorb the impact or extrusion energy of the outside through the deformation of the convex ribs, so that the groups of battery cells placed in the lower box body are further protected; in order to avoid the intensity of protruding muscle 202 not enough, the blank area that utilizes between the adjacent protruding muscle 202 sets up the protruding structure of discrete, the protruding structure of discrete also can be through the deformation of self absorb external striking or extrusion energy, the anti striking or the extruded ability of battery box have further been improved in other words, in addition, anticollision baffle 2, protruding muscle 202 and the protruding structure of discrete occupy the space less, can not crowd and occupy the space of placing in the battery core of group of placing in the lower box, also can guarantee that the battery box has higher energy density.
Specifically, lower box is the rectangle to the wiring structure place side that sets up electric core in groups is the front side, and the inboard of the back tank wall of box is provided with anticollision baffle 2 under, and the corresponding inboard of left side tank wall and right tank wall then is equipped with reinforcing plate 3, and two reinforcing plates 3 are connected with anticollision baffle 2, in order to form the installation cavity of installing electric core in groups, and like this, anticollision baffle 2 can provide better protection to the back tank wall.
Correspondingly, be provided with many places protruding muscle 202 on the anticollision baffle 2, also all be provided with the protruding structure of discrete between the adjacent protruding muscle 202, it is specific, protruding muscle 202 is the protruding muscle of U-shaped of integrative punching press formation on anticollision baffle 2, protruding muscle 202 has increased anticollision baffle 2's intensity, makes anticollision baffle 2's the ability of shocking resistance stronger, and forms protruding muscle 202 through punching press technology, has the advantage that processing technology is simple. The convex rib 202 extends along the up-down direction when specifically arranging, so that the anti-collision or extrusion capacity of the anti-collision partition plate 2 in the up-down direction is more uniform, and grouped battery cells in the box body are better protected.
In addition, the angle is an between the side of protruding muscle 202 and the bulkhead 201, and in actual work, angle an can set up to different values according to the difference of external extrusion force, protruding muscle 202 with correspond the tank wall contact, suffer external striking or extrusion back, protruding muscle 202 warp, can absorb certain striking or extrusion energy to play the effect of protection installation group battery cell in the installation cavity, also can avoid bulkhead 201 to take place the drunkenness and with the tank wall of lower box between bump.
The discrete protruding structures arranged between the adjacent ribs 202 are uniformly arranged at intervals along the vertical direction, so that the anti-collision or extrusion capacity of the anti-collision partition plate 2 in the vertical direction is more uniform, and the better protection is used for placing grouped battery cells in the lower box body. Specifically, the discrete protruding structure is the post that integrative punching press formed 5 on crashproof baffle 2, and the number of post is protruding 5 between the adjacent protruding muscle 202 for the three that the single row was arranged, is the multiple spot and distributes, and forms post protruding 5 through stamping process, has the simple advantage of processing technology. In addition, the lateral surface of the post convex 5 is flush with the lateral surface of the convex rib 202, so that the post convex 5 can bear external impact or extrusion with the convex rib 202, and when the two are not flush, one of the post convex 5 and the convex rib 202, which is closer to the box wall, is subjected to greater impact or extrusion and deforms.
When the anti-collision partition board 2 is installed, the inner side surface of the board wall 201 is used for contacting with a group of battery cells, and the convex ribs 202 on the outer side surface contact with the corresponding box wall, so that the anti-collision partition board 2 is clamped between the box wall and the group of battery cells. The advantage that sets up like this lies in, anticollision baffle 2 makes anticollision baffle 2 arrange inseparabler with electric core and tank wall all contact in groups, and the space that occupies is littleer in the box down, and battery box energy density is also higher, when guaranteeing that the battery box has good crashproof performance, also can make the battery box have higher energy density.
Second embodiment of the battery box of the present invention: as shown in fig. 2 and 3, the anti-collision partition board 2 can also be set to three positions, i.e. no longer set up the reinforcing plate, the corresponding insides of the left and right box walls and the rear box wall of the lower box body all set up the anti-collision partition board 2, the anti-collision partition boards 2 are connected in sequence, and the insides of the anti-collision partition boards 2 form a mounting cavity for mounting the battery cells in groups. Like this under the condition of the battery cell wiring of group of box leading flank under not influencing, a plurality of anticollision baffle 2 set up can provide the protection to a plurality of sides of electric core in groups, further protect electric core in groups.
The third embodiment of the battery case of the invention: as shown in fig. 4, the crash barrier 2 is also provided with three positions, specifically distributed on the corresponding inner sides of the left and right box walls and the rear box wall of the lower box body, and in addition, the column protrusions 5 are arranged in six positions in a double row. In other embodiments, the number of the stud bumps may be two, four, or other suitable numbers according to actual needs. The shape of the stud bump may also be a bump of other shapes, such as a sphere, a diamond, or an ellipse.
In the three embodiments, the outer side surface of the column protrusion is flush with the outer side surface of the convex rib. In other embodiments, the outer side surface of the stud bump and the outer side surface of the rib may not be flush, and the stud bump and the rib may be arranged in a staggered manner in the extending direction.
In the above three embodiments, the post protrusions are integrally stamped and formed on the crash barrier. In other embodiments, the post protrusions may be separately disposed and welded to the crash barrier.
In the above three embodiments, the discrete raised structures are uniformly spaced in the up-down direction. In other embodiments, the discrete raised structures may not be uniformly spaced, but may be irregularly arranged in the up-down direction.
In the above three embodiments, the ribs are arranged to extend in the up-down direction. In other embodiments, the ribs may be arranged horizontally or obliquely.
In the above three embodiments, the rib is a U-shaped rib integrally formed on the crash barrier by stamping. In other embodiments, the U-shaped rib may be welded to the crash barrier, and the cross-section of the rib may be tapered.
In the above three kinds of embodiments, the medial surface of anticollision baffle is used for contacting with electric core in groups, and the protruding muscle of lateral surface contacts with corresponding tank wall to make anticollision baffle press from both sides and press from both sides between tank wall and electric core in groups. In other embodiments, the anti-collision partition board can only contact with one of the battery cores in groups and the corresponding box walls, and also can not contact with both of the battery cores in groups, and at the moment, the anti-collision partition board can be fixed in the lower box body through welding or bonding in order to facilitate the fixation of the anti-collision partition board, but under the condition, in order to ensure the energy density of the battery box, the gap between the anti-collision partition board and the battery cores in groups and/or the corresponding box walls is not too large.
The specific embodiment of the battery box body of the invention is as follows:
the structure of the battery box body is the same as that of the battery box body in the above embodiment of the battery box, and the description is omitted here.
Claims (9)
1. The utility model provides a battery box which characterized in that: comprises that
The lower box body is surrounded by box walls;
an upper cover;
the anti-collision partition plate is fixed in the lower box body, is positioned between the grouped electric cores and the box walls when in use, and is provided with convex ribs on the outer side surface facing to the corresponding box walls;
and the discrete convex structures are positioned between the adjacent convex ribs.
2. The battery box of claim 1, characterized in that: the convex rib is a U-shaped convex rib integrally formed on the anti-collision clapboard by stamping.
3. The battery box body of claim 1 or 2, characterized in that: the convex rib extends along the up-down direction.
4. The battery box body of claim 3, wherein: the discrete type convex structures are uniformly arranged along the vertical direction at intervals.
5. The battery box body of claim 1 or 2, characterized in that: the discrete type protruding structure is a column protrusion formed on the anti-collision partition plate through integral stamping.
6. The battery box body of claim 1 or 2, characterized in that: the outer side surface of the discrete type protruding structure is flush with the outer side surface of the convex rib.
7. The battery box body of claim 1 or 2, characterized in that: the medial surface of anticollision baffle is used for when using with electric core contact in groups, the protruding muscle of lateral surface with correspond the tank wall contact to make anticollision baffle press from both sides and press from both sides between tank wall and electric core in groups.
8. The battery box body of claim 1 or 2, characterized in that: the lower box body is of a rectangular structure, a group of electric core wiring structures are arranged on the front side face of the lower box body, and the corresponding inner sides of the left box wall, the right box wall and the rear box wall of the lower box body are respectively provided with the anti-collision partition plates which are sequentially connected.
9. The utility model provides a battery box, includes battery box and the battery core in groups of fixed mounting in the battery box, its characterized in that: the battery box body is the battery box body of any one of the above claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367987.3A CN111900279A (en) | 2019-05-05 | 2019-05-05 | Battery box and battery box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367987.3A CN111900279A (en) | 2019-05-05 | 2019-05-05 | Battery box and battery box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111900279A true CN111900279A (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910367987.3A Pending CN111900279A (en) | 2019-05-05 | 2019-05-05 | Battery box and battery box body |
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| CN (1) | CN111900279A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129840A (en) * | 1997-10-31 | 1999-05-18 | Nissen Chemitec Corp | Impact absorbing member |
| CN205542942U (en) * | 2015-12-11 | 2016-08-31 | 北汽福田汽车股份有限公司 | Anticollision power battery box and have this anticollision power battery box's electric vehicle |
| CN206820034U (en) * | 2017-04-27 | 2017-12-29 | 乔信电子股份有限公司 | Battery pack protection box with shock-absorbing heat insulating function |
| TWM554641U (en) * | 2017-04-27 | 2018-01-21 | J S Power Co Ltd | Battery protection box having vibration absorbing and thermal insulation functions |
| CN108807740A (en) * | 2018-05-02 | 2018-11-13 | 六安同辉智能科技有限公司 | A kind of new-energy automobile anticollision battery case |
| CN209880684U (en) * | 2019-05-05 | 2019-12-31 | 郑州深澜动力科技有限公司 | Battery box and battery box body |
-
2019
- 2019-05-05 CN CN201910367987.3A patent/CN111900279A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129840A (en) * | 1997-10-31 | 1999-05-18 | Nissen Chemitec Corp | Impact absorbing member |
| CN205542942U (en) * | 2015-12-11 | 2016-08-31 | 北汽福田汽车股份有限公司 | Anticollision power battery box and have this anticollision power battery box's electric vehicle |
| CN206820034U (en) * | 2017-04-27 | 2017-12-29 | 乔信电子股份有限公司 | Battery pack protection box with shock-absorbing heat insulating function |
| TWM554641U (en) * | 2017-04-27 | 2018-01-21 | J S Power Co Ltd | Battery protection box having vibration absorbing and thermal insulation functions |
| CN108807740A (en) * | 2018-05-02 | 2018-11-13 | 六安同辉智能科技有限公司 | A kind of new-energy automobile anticollision battery case |
| CN209880684U (en) * | 2019-05-05 | 2019-12-31 | 郑州深澜动力科技有限公司 | Battery box and battery box body |
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