CN203859171U - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN203859171U CN203859171U CN201420275323.7U CN201420275323U CN203859171U CN 203859171 U CN203859171 U CN 203859171U CN 201420275323 U CN201420275323 U CN 201420275323U CN 203859171 U CN203859171 U CN 203859171U
- Authority
- CN
- China
- Prior art keywords
- box body
- battery pack
- battery
- battery pile
- lower box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003351 stiffener Substances 0.000 claims description 19
- 238000003475 lamination Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010959 steel Substances 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)
Abstract
The utility model provides a battery pack, which comprises a battery stack and a battery pack box body for accommodating the battery stack, wherein the battery stack is provided with a stacked body obtained by stacking a plurality of individual batteries and a pair of end plates for clamping the stacked body from the two ends along a stacking direction; the battery pack box body is provided with a lower box body fixedly connected with the end plates to support the two ends of the battery stack and an upper box body covering the battery stack supported by the lower box body from the upper part; an anti-vibration rubber is arranged between the battery stack and the lower box body and between the battery stack and the upper box body; a reinforcing component for tightening the upper and lower box bodies is arranged on the upper surface of the battery pack box body, and extends along a direction perpendicular to the length direction of the battery pack box body. Due to the adoption of the structure, the bending deformation of the battery stack can be inhibited without improving the rigidity of the battery pack box body, and the anti-vibration performance of the battery stack can be improved.
Description
Technical field
The utility model relates to battery pack, particularly a kind of battery pack that accommodates the battery pile that comprises a plurality of battery cells in box body.
Background technology
In prior art, known have a kind of by by a plurality of battery cell laminations laminated body from stack direction, with pair of end plate holder, holding the battery pack being contained in the battery pack box body with lower box body and upper cartridge body.This battery pack is by above-mentioned a pair of end plate is fixedly connected on lower box body, and the two ends of battery pile are fixed on lower box body.So, in this structure, battery pile is only supported by the end plate at two ends.
Yet if the quantity of the battery cell comprising in battery pile is more, the deflection of battery pile is large, eigentone is lower, thereby battery pile is easily bent downwardly, also easily resonates.In prior art, in order addressing this problem, for example, by all battery cells that comprise in battery pile being fixedly connected on lower box body or to all battery cells, to use fixed component, to reduce the deflection of battery pile, the eigentone of raising battery pile.Yet adopting these methods can bring again because of number of components and assemble increases the problem that manufacturing cost raises, weight increases that causes battery pack man-hour.
In addition, in order to address the above problem, for example, also can consider, between battery pile and lower box body, vibration-proof rubber is set.But, adopt in the situation of this structure, if battery pack box body does not have fully high rigidity, the reaction force that rubber puts on battery pack box body likely makes battery pack box body produce dilatancy, and battery pack integral body is likely crooked downwards.Yet, if significantly improve the rigidity of battery pack box body, can make the manufacturing cost of battery pack significantly raise, the weight of battery pack increases.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is, provides a kind of rigidity that need not improve battery pack box body itself also can suppress the flexural deformation of battery pile and improves the battery pack of the resistance to shock of battery pile.
As the technical scheme solving the problems of the technologies described above, the utility model provides a kind of battery pack.This battery pack comprises, battery pile and the battery pack box body that holds this battery pile, and described battery pile has the laminated body being obtained by a plurality of battery cell laminations and along stack direction from two ends, clamps a pair of end plate of this laminated body; Described battery pack box body has the lower box body at the two ends that are fixedly connected with described end plate and support described battery pile and from top, covers the upper cartridge body of the described battery pile being supported by described lower box body, it is characterized in that: between described battery pile and described lower box body, between described battery pile and described upper cartridge body, be respectively arranged with vibration-proof rubber, on the outer surface of described battery pack box body, be provided with the stiffener that extends, described lower box body and described upper cartridge body are carried out lock ring along the direction perpendicular to the length direction of this battery pack box body.
The advantage with the battery pack of the present utility model of said structure is, due between battery pile and lower box body, between battery pile and upper cartridge body, be respectively arranged with vibration-proof rubber, so can reduce the bending deformation quantity (deflection) of battery pile, thereby and the eigentone that improves battery pile strengthen the resistance to shock of battery pile.In addition, owing to being provided with, lower box body and upper cartridge body are carried out to the stiffener of lock ring, so need not improve the rigidity of battery pack box body itself, also can prevent the dilatancy of battery pack box body, and suppress the flexural deformation of battery pack integral body.
In above-mentioned battery pack of the present utility model, be preferably, be arranged on described vibration-proof rubber between described battery pile and described lower box body, corresponding with the described vibration-proof rubber residing position on the length direction of described battery pile being arranged between described battery pile and described upper cartridge body.Adopt this structure, upside and the downside of the same position by the length direction in battery pile arrange respectively vibration-proof rubber, can make the mechanical structure of battery pile stable, thus can effectively suppress battery pile flexural deformation, improve the resistance to shock of battery pile.
In above-mentioned battery pack of the present utility model, be preferably, described stiffener is corresponding with described vibration-proof rubber residing position on the length direction of described battery pack box body.Adopt this structure, on same position by the length direction at battery pack box body, stiffener and vibration-proof rubber are set accordingly, can make the mechanical structure of battery pack integral body stable, thereby can more effectively prevent the resistance to shock of the dilatancy of battery pack box body, the flexural deformation that suppresses battery pack integral body, raising battery pack integral body.
Accompanying drawing explanation
Fig. 1 means the perspective elevation of the battery pack of execution mode.
Fig. 2 is the sectional view of the A-A face in Fig. 1.
Fig. 3 is the stereogram that the syndeton of each member that self-contained battery monomer laminated body uses is only shown.
Fig. 4 means the schematic diagram of the mechanical model of battery pile.
Fig. 5 means the schematic diagram of the mechanical model of battery pack.
Embodiment
Below, with reference to accompanying drawing, embodiment of the present utility model is described.But the utility model is not limited by the record of following execution mode.
Fig. 1 means the perspective elevation of the battery pack 1 of present embodiment; Fig. 2 is the sectional view of the A-A face in Fig. 1; Fig. 3 shows the syndeton of each member that self-contained battery monomer laminated body uses.This battery pack 1 is such as for being installed in the cell apparatus in fuel cell hybrid car or electric motor car etc.Battery pack 1 possesses battery pile 2 and holds the battery pack box body 3 of this battery pile 2.
Battery pile 2 as shown in Figure 1, comprises a plurality of battery cells 4, a plurality of battery carrier 5, a pair of end plate 6 and upside constraint member 7 and downside constraint member 8.This battery pile 2 is constituted as, battery cell 4 and battery carrier 5 alternative stacked configurations, meanwhile, these battery cell 4 and battery carriers 5 (following, also referred to as laminated body 9) after by lamination are being clamped along stack direction (Y-direction of Fig. 1) by a pair of end plate 6 that is configured in respectively both ends.A plurality of battery cells 4 are electrically connected to mutually by busbar (not shown).
Specifically, battery carrier 5 consists of the resin material with electrical insulating property.A pair of end plate 6 is parallel to the front-end and back-end that battery carrier 5 and battery cell 4 ground are configured in laminated body 9.Under this state, two constraint of the downsides at a distance of predetermined distance members 8 that the end plate 6 along stack direction from front end on the end face of laminated body 9 extends to two of end plate 6 constraint of the upsides at a distance of predetermined distance members 7 of rear end always, extend to the end plate 6 of rear end with the end plate along stack direction from front end 6 on the bottom surface of laminated body 9 are always clamped respectively laminated body 9 from above-below direction.And, as shown in Figure 3, by the upside constraint member 7 of upper and lower correspondence and connecting elements 31, the connecting elements 32 for rear and front end of downside constraint member 8 are fastenedly connected respectively, each battery carrier 5 of laminated body 9 and battery cell 4 are just fastening by upside constraint member 7 and downside constraint member 8 at above-below direction.
Battery pack box body 3 has lower box body 10 and upper cartridge body 11.In Fig. 1, in order clearly to represent the component parts of battery pile 2, and by the transparent expression of upper cartridge body 11.It is tabular that lower box body 10 is formed rectangle.The long side direction of lower box body 10 is consistent with the stack direction of battery cell 4.The bottom at the two ends of the long side direction of lower box body 10 is provided with leg 12.Lower box body 10 is fixedly connected on car floor (not shown) by the leg 12 at these two ends.Therefore, between the surface on the Yu Che floor, bottom surface of lower box body 10, being formed with is highly the gap of the height of leg 12.
The a pair of end plate 6 of battery pile 2 is fixedly connected at respectively on the upper surface of lower box body 10 by clamp structure 13, and the position that is fixedly connected with of a pair of end plate 6 is set to, make the center of long side direction of lower box body 10 consistent with the center of the stack direction of battery pile 2.By so a pair of end plate 6 being fixedly connected on the upper surface of lower box body 10, a pair of end plate 6 being supported by lower box body 10 can remain the state that is suspended in lower box body 10 tops by laminated body 9.
On the other hand, the flange 16 that upper cartridge body 11 has rectangular roof 14, the side wall portion 15 extending from the both side edges of roof 14 downwards and extends laterally respectively from the lower end of two side wall portions 15.By the use mode such as weld, two flanges 16 are engaged with the limit portion of the both sides of lower box body 10 respectively, the battery pile 2 being supported by lower box body 10 can be covered from top by upper cartridge body 11.
Yet, in this structure, owing to representing the battery pile 2 deflection δ of crooked degree downwards
s(=5 * w
s* L
s 3/ (384 * E
s* I
s)) and length L
scube be directly proportional; The eigentone k of battery pile 2
s(=48 * E
s* I
s/ L
s 3) and length L
scube be inversely proportional to (at this, w
s, L
s, E
s, I
sthe weight, length, Young's modulus, the cross sectional moment of inertia that represent respectively battery pile 2), so in more (that is, the length L of the stack direction of battery pile 2 of the quantity of battery cell 4
slonger) situation under, deflection δ
slarge, eigentone k
slower.Thereby if the end plate 6 only by two ends supports laminated body 9, in a fairly large number of situation of battery cell 4, battery pile 2 easily produces flexural deformation, and easily resonates.
In prior art, in order addressing this problem, for example, by all battery cells 4 are fixedly connected on lower box body 10, or to fix all battery cells 4 with fixed component, to suppress flexural deformation and the resonance of battery pile 2.Yet, adopt these methods all can and assemble because of number of components to increase man-hour and cause the manufacturing cost of battery pack 1 to raise and weight increase.
To this, in the battery pack 1 of present embodiment, as shown in Figure 2, between battery pile 2 and lower box body 10, between battery pile 2 and upper cartridge body 11, be provided with respectively vibration-proof rubber 17, vibration-proof rubber 18.And vibration-proof rubber 17 is corresponding in the upper residing position of stack direction (length direction) of battery pile 2 with vibration-proof rubber 18, be all positioned at the middle part of the length direction of battery pile 2.Particularly, as shown in Figure 2, vibration-proof rubber 17 is arranged between downside constraint member 8 and lower box body 10; Vibration-proof rubber 18 is arranged between upside constraint member 7 and upper cartridge body 11.
So, middle part by the stack direction in battery pile 2 arranges vibration-proof rubber 17 and vibration-proof rubber 18, and the mid portion that is suspended in the stack direction of the battery pile 2 on lower box body 10 is supported between the lower box body 10 and upper cartridge body 11 of battery pack box body 3 by vibration-proof rubber 17 and vibration-proof rubber 18.The load model of the battery pile 2 of this structure as shown in Figure 4, because the fulcrum of battery pile 2 becomes three (having increased vibration-proof rubber 17 and the formed fulcrum of vibration-proof rubber 18) from original two (end plate 6 of front end and the end plates 6 of rear end), so, battery pile 2 can be divided on stack direction to two parts, the length of each part, weight are the length L of battery pile 2
s, weight w
sfor each half calculate the deflection δ of each several part
swith eigentone k
s.That is, the deflection δ of each part
s(=5 * (w
s/ 2) * (L
s/ 2)
3/ (384 * E
s* I
s)) be reduced to original 1/16.The eigentone k of each part
s(=48 * E
s* I
s/ (L
s/ 2)
3) increase to original 8 times.As can be seen here, the middle part by the stack direction in battery pile 2 arranges vibration-proof rubber 17 and vibration-proof rubber 18, the deflection δ of battery pile 2
ssignificantly reduce the eigentone k of battery pile 2
ssignificantly raise, thereby, can effectively prevent flexural deformation and the resonance of battery pile 2.
Yet, in said structure, due to be arranged on the vibration-proof rubber 17 between battery pile 2 and lower box body 10 and be arranged on battery pile 2 and upper cartridge body 11 between vibration-proof rubber 18 respectively lower box body 10 and upper cartridge body 11 are applied to reaction force, so battery pack box body 3 likely expands distortion, and being become flexible, vibration-proof rubber 17,18 even comes off.
In addition, due between battery pile 2 and lower box body 10, between battery pile 2 and upper cartridge body 11, by vibration-proof rubber 17, vibration-proof rubber 18, be connected, so battery pile 2 is connected to one with battery pack box body 3.In the case, the deflection δ of battery pack 1 integral body
pfor: δ
p=c1 * w
p* L
p 3/ E
p* I
p; Eigentone k
pfor: k
p=c2 * E
p* I
p/ L
p 3, wherein, c1 and c2 are coefficient, w
p, L
p, E
p, I
pbe respectively weight, length, Young's modulus, the cross sectional moment of inertia of battery pack box body 3, E
p* I
pthe amount of rigidity that represents battery pack box body 3.As can be seen here, for battery pack 1 generally speaking, in the length L of battery pack box body 3
pin longer situation, if rigidity (E
p* I
p) insufficient high, deflection δ
pstill greatly eigentone k,
palso still lower.Yet, if improve significantly rigidity (E
p* I
p), can make the manufacturing cost of battery pack box body 3 significantly raise, weight increases.
In the battery pack 1 of present embodiment, in order to solve this technical problem, on the outer surface of battery pack box body 3, be provided with the stiffener 19 that extends, lower box body 10 and upper cartridge body 11 are carried out lock ring along the direction perpendicular to the length direction of this battery pack box body 3.
Particularly, as shown in Figure 1, stiffener 19 is arranged on the middle part of the length direction of battery pack box body 3.Because the center of the long side direction of battery pack box body 3 is consistent with the center of the stack direction of battery pile 2, so, stiffener 19 be arranged on the vibration-proof rubber 17 between battery pile 2 and lower box body 10 and be arranged on battery pile 2 and upper cartridge body 11 between vibration-proof rubber 18 residing position on the length direction of battery pack box body 3 corresponding.
As shown in Figure 2, stiffener 19 comprises bottom surface member 20, end face member 21 and a pair of lateral members 22.These bottom surface members 20, end face member 21 and lateral members 22 consist of U-steel.Bottom surface member 20 is configured in the middle part (vibration-proof rubber 17 under) of the long side direction (Y-direction of Fig. 1) of the bottom surface of lower box body 10 along the direction (directions X of Fig. 1) of the length direction perpendicular to battery pack box body 3, and length is identical with the bottom width of lower box body 10.End face member 21 is configured in the middle part (vibration-proof rubber 18 directly over) of the long side direction (Y-direction of Fig. 1) of the roof 14 of upper cartridge body 11 along the direction (directions X of Fig. 1) of the length direction perpendicular to battery pack box body 3, and its two ends run off from the both sides of roof 14 and with the justify align of bottom surface member 20.In addition, a pair of lateral members 22 is respectively at the two ends of directions X, along the Z direction of Fig. 1, is configured between the end of end face member 21 and the end of bottom surface member 20 (flange 16 across the bottom surface of lower box body 10).
Then, by the upper end of lateral members 22 being fixedly connected with the end of end face member 21 with for example clamp structure of screw bolt and nut and so on; The bottom of lateral members 22 is fixedly connected with the end of end face member 21 with flange 16, as shown in Figure 2, bottom surface member 20, end face member 21 and a pair of lateral members 22 connect into lock ring at the stiffener 19 of the square frame shape of battery pack box body 3 surroundings.
By stiffener 19 is set, it is fastening that battery pack box body 3 is reinforced member 19 on short transverse (Z) and Width (X), thereby effectively prevented from occurring because battery pack box body 3 dilatancies make the situation that vibration-proof rubber 17,18 becomes flexible, comes off.
On the other hand, at the deflection δ that carries out battery pack 1 integral body
p(=c1 * w
p* L
p 3/ E
p* I
p) and eigentone k
p(=c2 * E
p* I
p/ L
p 3) calculating time, before stiffener 19 is set, because 2 of battery pile are supported by lower box body 10, so cross sectional moment of inertia I
pby the distance till center to the base plate thickness center of lower box body 10 of battery pile 2, calculate.And after being provided with stiffener 19, as shown in Figure 5, battery pile 2 is supported by lower box body 10 and upper cartridge body 11 load model of battery pack 1 integral body jointly, so cross sectional moment of inertia I
pdistance till using from bottom surface member 20 to end face member 21 is calculated.Thereby, after being provided with stiffener 19, cross sectional moment of inertia I
pvalue significantly increase, thereby, with cross sectional moment of inertia I
pthe deflection δ that is inversely proportional to of value
pvalue reduce; With cross sectional moment of inertia I
pthe eigentone k that is directly proportional of value
pvalue increase.Therefore, need not improve the rigidity (E of battery pack box body 3 own
p* I
p), also can reach and reduce deflection δ
p, improve eigentone k
pobject.
In sum, adopt the said structure of present embodiment, can be in the situation that increase not significantly manufacturing cost, the weight of battery pack 1 and assemble man-hour, the resistance to shock of the flexural deformation of inhibition battery pack 1, raising battery pack 1.
In the above-described embodiment, for the middle part at battery pack box body 3, stiffener 19 is set; The example that vibration-proof rubber 17,18 is set in the middle part of battery pile 2 is illustrated, but the utility model is not limited to this, also stiffener 19 and vibration-proof rubber 17,18 can be set at other position.In addition, also can stiffener 19 be set at a plurality of positions of battery pack box body 3; At a plurality of positions of battery pile 2, vibration-proof rubber 17,18 is set.
In addition, the structure of stiffener 19 is unrestricted, so long as can apply the structure of fastening force to battery pack box body 3 in the short transverse of battery pack box body 3.
Claims (3)
1. a battery pack, comprises battery pile and the battery pack box body that holds this battery pile, and described battery pile has the laminated body being obtained by a plurality of battery cell laminations and along stack direction from two ends, clamps a pair of end plate of this laminated body; Described battery pack box body has the lower box body at the two ends that are fixedly connected with described end plate and support described battery pile and from top, covers the upper cartridge body of the described battery pile being supported by described lower box body, it is characterized in that:
Between described battery pile and described lower box body, between described battery pile and described upper cartridge body, be respectively arranged with vibration-proof rubber,
On the outer surface of described battery pack box body, be provided with the stiffener that extends, described lower box body and described upper cartridge body are carried out lock ring along the direction perpendicular to the length direction of this battery pack box body.
2. battery pack as claimed in claim 1, is characterized in that:
Be arranged on described vibration-proof rubber between described battery pile and described lower box body, corresponding with the described vibration-proof rubber residing position on the length direction of described battery pile being arranged between described battery pile and described upper cartridge body.
3. battery pack as claimed in claim 2, is characterized in that:
Described stiffener is corresponding with described vibration-proof rubber residing position on the length direction of described battery pack box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275323.7U CN203859171U (en) | 2014-05-27 | 2014-05-27 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275323.7U CN203859171U (en) | 2014-05-27 | 2014-05-27 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859171U true CN203859171U (en) | 2014-10-01 |
Family
ID=51609011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420275323.7U Expired - Lifetime CN203859171U (en) | 2014-05-27 | 2014-05-27 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859171U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016103328A (en) * | 2014-11-27 | 2016-06-02 | トヨタ自動車株式会社 | Battery pack |
| US20180145290A1 (en) * | 2016-11-24 | 2018-05-24 | Toyota Jidosha Kabushiki Kaisha | In-vehicle battery pack |
| WO2021070843A1 (en) * | 2019-10-10 | 2021-04-15 | 株式会社Ｇｓユアサ | Power storage device |
| CN113871772A (en) * | 2020-06-30 | 2021-12-31 | 奥迪股份公司 | Battery for a motor vehicle, motor vehicle and method for producing a battery |
-
2014
- 2014-05-27 CN CN201420275323.7U patent/CN203859171U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016103328A (en) * | 2014-11-27 | 2016-06-02 | トヨタ自動車株式会社 | Battery pack |
| US20180145290A1 (en) * | 2016-11-24 | 2018-05-24 | Toyota Jidosha Kabushiki Kaisha | In-vehicle battery pack |
| CN108110163A (en) * | 2016-11-24 | 2018-06-01 | 丰田自动车株式会社 | On-vehicle battery bag |
| US10535850B2 (en) * | 2016-11-24 | 2020-01-14 | Toyota Jidosha Kabushiki Kaisha | In-vehicle battery pack |
| WO2021070843A1 (en) * | 2019-10-10 | 2021-04-15 | 株式会社Ｇｓユアサ | Power storage device |
| JP2021064456A (en) * | 2019-10-10 | 2021-04-22 | 株式会社Ｇｓユアサ | Power storage device |
| JP7393732B2 (en) | 2019-10-10 | 2023-12-07 | 株式会社Ｇｓユアサ | Power storage device |
| CN113871772A (en) * | 2020-06-30 | 2021-12-31 | 奥迪股份公司 | Battery for a motor vehicle, motor vehicle and method for producing a battery |
| CN113871772B (en) * | 2020-06-30 | 2024-03-19 | 奥迪股份公司 | Battery for a motor vehicle, motor vehicle and method for producing a battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |