CN101719537B - Power battery pack for vehicle - Google Patents

Power battery pack for vehicle Download PDF

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Publication number
CN101719537B
CN101719537B CN2008101670537A CN200810167053A CN101719537B CN 101719537 B CN101719537 B CN 101719537B CN 2008101670537 A CN2008101670537 A CN 2008101670537A CN 200810167053 A CN200810167053 A CN 200810167053A CN 101719537 B CN101719537 B CN 101719537B
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China
Prior art keywords
panel
battery pack
baffle plate
power battery
edge
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CN2008101670537A
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CN101719537A (en
Inventor
朱建华
郑卫鑫
周皓
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BYD Co Ltd
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BYD Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The invention provides a power battery pack for a vehicle, comprising a plurality of single batteries (3), a baffle plate (1) and a panel (2), wherein the baffle plate (1) is provided with opposite baffle plate clamping edges (11); the baffle plate clamping edges (11) are provided with through holes (9); the outer surface of the panel (2) is provided with concave holes (10) which correspond to the through holes (9); the panel (2) is provided with opposite panel clamping edges (13) which extend perpendicular to the panel (2); the opposite panel (2) is clamped between the opposite baffle plate clamping edges (11) of the baffle plate (1), and bolts are inserted into the through holes (9) and the concave holes (10); and the plurality of single batteries (3) are respectively clamped between the panel clamping edges (13), thus fixation in three directions is realized only through the structure design of the baffle plate (1) and the panel (2) in two directions. The invention simplifies the structure and the assembling process.

Description

The vehicle mounted dynamic battery group
Technical field
The present invention relates to the power battery pack used on a kind of automobile, particularly a kind of power battery pack that comprises a plurality of cells, baffle plate, panel.
Background technology
Along with people's is to the improve of environmental requirement; It will be a development in future direction that EV (electric automobile) or HEV (mixed power vehicle) substitute fuel-engined vehicle; In the vehicles such as EV, HEV; General all is to adopt the power battery pack that is formed by connecting a plurality of cells, satisfies the demand of high-power output with this.The design demand of battery pack is considered several factors; Should guarantee that battery performance satisfies automobile demand; Simultaneously to guarantee that also battery has enough fail safes, reliability; In addition, also need consider cooperating to reduce complete vehicle quality and volume between battery pack and the automobile, these are all close with the structural relation of power battery pack.
Shown in Figure 1 is a kind of known configurations of prior art medium power battery pack, and wherein, power battery pack is linked together by a plurality of cells 3, is provided with dividing plate 4 between the cell 3, fixes battery pack through baffle plate 1 and pull bar then.As shown in Figure 1, this structure is from X and Z both direction self-contained battery group, and in this kind structure, battery pack is only fixed through baffle plate 1 and pull bar on X, Z both direction, but has no fixation in the Y direction.The battery pack that is installed in automotive interior can receive the impact of different directions power in the process of moving; Particularly under the situation of side impact; Battery is easy to produce dislocation on the Y direction, and, if collision makes special circumstances such as battery generation leakage; The battery pack of this kind structure very easily produces risk of short-circuits, thereby reduces the reliability and the fail safe of battery pack.
Summary of the invention
Technical problem to be solved by this invention provides a kind of power battery pack, and this power battery pack can guarantee that not only battery pack is fixed on X, Y, three directions of Z, and structure simplifies, and assembling procedure is simple.
The technical problem that the present invention further will solve provides a kind of power battery pack, and the structure of this power battery pack can guarantee that not only battery pack is fixed on X, Y, three directions of Z, and can seal it.
For solving the problems of the technologies described above; The present invention provides a kind of power battery pack; This power battery pack comprises a plurality of cells, and these a plurality of cells are regularly arranged and place between the relative baffle plate in the position panel relative with the position, wherein; The both sides of the edge of said baffle plate have that stretch out perpendicular to baffle plate, relative baffle plate edge; This baffle plate edge is provided with through hole, and said panel outer surface is provided with the shrinkage pool corresponding with this through hole, and said panel has that stretch out perpendicular to panel, relative panel edge in its both sides of the edge perpendicular to said baffle plate; Said relative panel and said baffle plate are connected fixingly through in said through hole and shrinkage pool, being inserted with latch, and the contact jaw of said a plurality of cells and said panel is stuck between the panel edge of said panel.
As the improved technical scheme of the present invention, said panel can also be provided with positive stop lug boss in its relative panel edge inboard.
Simultaneously; For solving the further technical problem of the present invention; On the basis of technique scheme, power battery pack provided by the invention also comprises the side plate that is installed in the battery pack both sides, and is separately installed with sealing gasket in baffle plate, panel and side plate junction separately.Wherein, the material of said side plate is the compound of polyphenylene oxide and glass fiber.The matrix thickness of said side plate is 3mm-5mm.It is 5mm-10mm side plate reinforcement that the outer surface of said side plate is provided with thickness.Said side plate is fixed on the said panel through securing member.
The quantity of the through hole on each edge of said plate washer is 2-4.
Said baffle plate adopts plastic material, is preferably the compound of polyphenylene oxide and glass fiber, and wherein, the matrix thickness of said baffle plate is 3mm-5mm, and its outer surface is provided with the baffle plate reinforcement that thickness is 5mm-12mm.
Said panel adopts plastic material, is preferably the compound of polyphenylene oxide and glass fiber, and wherein, the matrix thickness of said panel is 3mm-5mm, and it is 5mm-10mm panel reinforcement that its outer surface is provided with thickness.
Baffle plate and panel mating holes and the latch through between the two is connected fixing, because relative baffle plate inner surface separately all closely contacts with the cell group, thereby can realize directions X, also is the spacing of cell thickness direction; Panel is stuck between the relative edge of baffle plate and is fixed, and the inner surface of relative panel all closely contacts with the cell group, thereby realizes that promptly the cell Width is spacing to the Z direction; Through the relative panel edge on the face plate edge; Cell is stuck between the panel edge,, can also positive stop lug boss be set in panel edge inboard cell is fixed for further accurately locating; Thereby can realize the direction to Y, promptly the cell length direction is spacing.Simultaneously, in further solution,, and side plate is fixed on the panel, has further strengthened spacing on battery pack X, Y, the Z direction through securing member through the side plate that increases.In addition, rubber seal is installed respectively, thereby the cavity after baffle plate, panel and the side plate combination is formed sealing in baffle plate, panel, side plate junction separately.Separate with dividing plate between the battery cell, can avoid the contact between the monomer housing, reduce short risk.
Therefore, power battery pack of the present invention has following advantage: (1) can carry out well spacing to the cell all directions, improves the battery pack reliability, prolongs battery useful life; (2) through the structural design of baffle plate and panel both direction, just realized the fixing of three directions, simplified structure, reduce the vehicle mounted dynamic battery group and taken volume, also simplified the battery pack production process simultaneously; (3) this vehicle mounted dynamic battery group can be avoided the contact between the monomer housing, reduces short risk; (4) owing to adopted plastic cement baffle plate and panel, greatly reduce the power brick body weight, and then alleviated complete vehicle quality; (5) this vehicle mounted dynamic battery group has adopted hermetically-sealed construction, can prevent when battery from incurring loss leakage takes place and causes the generation of situation such as short circuit.
Description of drawings
Fig. 1 is the installation diagram of a kind of power battery pack of known configurations in the prior art;
Fig. 2 is the installation diagram of power battery pack of the present invention;
The partial cross section figure that Fig. 3 dissects along the I-I line among Fig. 2 for baffle plate;
Fig. 4 is the side plate front view;
The sectional view that Fig. 5 dissects along the II-II line among Fig. 2 for panel.
Embodiment
Below in conjunction with description of drawings preferred implementation of the present invention.
What need at first explanation is, " forward and backward ", " left and right " of adopting at our department's branch, " upper and lower " etc. are represented the term in orientation, wherein; So-called " forward and backward " represented the thickness direction along cell in the accompanying drawings; Be the directions X in the accompanying drawing, so-called " left and right " represented the length direction along cell in the accompanying drawings, i.e. Y direction in the accompanying drawing; So-called " upper and lower " represented the Width along cell in the accompanying drawings, i.e. Z direction in the accompanying drawing.These terms are merely to describe conveniently and use, and can not be interpreted as limitation of the present invention, and protection scope of the present invention is as the criterion with claim.
With reference to Fig. 2, each part of power battery pack of the present invention is described earlier.
The material of baffle plate 1 is PPO+30%GF (polyphenylene oxide adds 30% glass fiber), and its outer surface is distributed with baffle plate reinforcement 6, guarantees baffle plate 1 intensity.While is respectively arranged with relative baffle plate edge 11 (referring to Fig. 3) in the position at its upper and lower edge of baffle plate 1, and baffle plate edge 11 is provided with through hole 9.The matrix thickness of baffle plate 1 is 3-5mm, and the thickness of reinforcement 6 is 5-12mm, and reinforcement 6 is distributed on the baffle plate 1 according to the stressing conditions of baffle plate 1 in length and breadth.
The material of panel 2 is similarly PPS+30%GF, and its outer surface is distributed with panel reinforcement 7, guarantees the intensity of panel 2.Simultaneously be provided with shrinkage pool 10 at panel 2, the position of shrinkage pool 10 and quantity are corresponding with through hole 9 on the baffle plate 1.The matrix thickness of panel 2 is 3mm-5mm, and the thickness of panel reinforcement 7 is 5mm-10mm, and panel reinforcement 7 is distributed on the outer surface of panel 2 according to the stressing conditions of panel 2 in length and breadth.In addition, panel 2 has in its both sides of the edge perpendicular to baffle plate 1 perpendicular to that stretch out, the relative panel edge 13 of panel 2, and spacing for better carrying out, the inboard of panel edge 13 also is provided with relative positive stop lug boss 12 (referring to Fig. 5).In Fig. 2, for easy for installation, panel 2 be reserved with side plate 5 on the corresponding installing hole of screwed hole 8, certainly under other mounting meanss, for example bondingly might not reserve this installing hole.
The material of side plate 5 is similarly PPS+30%GF, and its outer surface is distributed with the side plate reinforcement, guarantees the intensity of side plate 5.The matrix thickness of side plate 5 is 3mm-5mm, and the thickness of its outer surface reinforcement is 5mm-10mm.Referring to Fig. 4, also be provided with the screwed hole 8 that is used to install on it.
In addition, dividing plate 4 adopts plastic materials, requires insulation, certain mechanical strength is arranged, wear-resisting, thermal denaturation temperature, low temperature embrittlement and resistance to chemical attack; Cell 3 is the lithium battery that adopts usually.
Below the explanation this power battery pack three directions of X, Y, Z on location structure.
As shown in Figure 2; Separate with dividing plate 4 between the cell 3, cell 3 places between forward and backward baffle plate 1 and the upper and lower panel 2, under installment state; Upper and lower panel 2 is stuck between the edge of baffle plate 1; Insertion latch in the shrinkage pool 10 of the edge through hole 9 of forward and backward baffle plate 1 and the upper and lower panel 2 corresponding simultaneously with through hole 9, thus forward and backward baffle plate 1 is fixed, because the inner surface of forward and backward baffle plate 1 closely contacts with cell 3; Thereby can realize cell 3 spacing on directions X, also be the spacing of cell 3 thickness directions.
Like Fig. 2, shown in Figure 3, baffle plate 1 has upper and lower relative baffle plate edge 11, and has through hole 9 on the baffle plate edge 11; Panel 2 is provided with the shrinkage pool 10 that cooperates with it corresponding to the position of through hole 9 simultaneously; When mounted, upper and lower panel 2 is stuck between the upper and lower baffle plate edge 11 of the forward and backward baffle plate of power battery pack, inserts latch at through hole 9 and shrinkage pool 10 simultaneously; Baffle plate 1 and panel 2 are fixed; Because the inner surface of upper and lower panel 2 closely contacts with cell 3, thereby realization also is spacing on cell 3 Widths to cell spacing in the Z direction.
Like Fig. 2, shown in Figure 4; The left and right edge of panel 2 is provided with panel edge 13; When mounted, make the lower end of cell 3 be stuck between the left/right panel edge 13 of lower panel 2, make the upper end of cell 3 be stuck between the left/right panel edge 13 of top panel 2 simultaneously; Thereby having realized cell 3 spacing in the Y direction, also is the spacing of length direction.Better spacing, as shown in Figure 4 for carrying out, the inboard of panel edge 13 also is provided with relative positive stop lug boss 12, can cell 3 be stuck in positive stop lug boss 12 when mounted, positions accurately.
In addition, in order further to strengthen the location of battery pack X, Y, Z direction, and realize the sealing of battery pack simultaneously, can side plate 5 be installed in the left and right sides of battery pack, and be separately installed with sealing gasket in baffle plate 1, panel 2, side plate 5 junction separately.
The following assemble method that this power battery pack is described with reference to Fig. 2.
At first, lower panel 2 is placed on the edge 11 of forward and backward baffle plate 1 lower limb, and plate 2 is installed sealing gasket with the junction of forward and backward baffle plate 1 below, simultaneously insertion latch in the corresponding shrinkage pool 10 on the edge through hole 9 of baffle plate 1 lower limb and lower panel 2;
Secondly, arrange a plurality of cells 3 below on the inner surface of plate 2, between per two cells 3, dividing plate 4 is set, and the lower end of each cell group 3 is stuck between the left and right positive stop lug boss 12 of said lower panel 2;
Once more; Top panel 2 is installed to the battery pack upper surface; Make top panel 2 be inserted in the below of the edge 11 of forward and backward baffle plate 1 top edge; And plate 2 is installed sealing gasket with the junction of forward and backward baffle plate 1 in the above, and the upper end of cell group 4 is stuck between the left and right positive stop lug boss 12 of said top panel 3, and on the edge through hole 9 of baffle plate 1 top edge and top panel 2 insertion latch in the corresponding shrinkage pool 10;
At last, left and right side plate 5 is installed to the left and right side of battery pack, and sealing gasket is installed, and the screw hole 8 that screw is screwed on the side plate 5 carries out fastening in the corresponding separately junction of side plate 5 and baffle plate 1, panel 2.

Claims (14)

1. power battery pack; This power battery pack comprises a plurality of cells (3); These a plurality of cells (3) are regularly arranged and place between the relative baffle plate in position (1) panel (2) relative with the position; Wherein, Said relative baffle plate (1) inner surface separately all closely contacts with said cell, and the inner surface of said relative panel (2) also all closely contacts with said cell, and the both sides of the edge of said baffle plate (1) have perpendicular to baffle plate (1) baffle plate edge that stretch out, relative (11); This baffle plate edge (11) is provided with through hole (9); Said panel (2) outer surface is provided with the shrinkage pool (10) corresponding with this through hole (9), and said panel (2) has perpendicular to panel (2) panel edge that stretch out, relative (13) in its both sides of the edge perpendicular to said baffle plate (1), and said relative panel (2) and said baffle plate (1) are connected fixing through in said through hole (9) and shrinkage pool (10), being inserted with latch; The contact jaw of said a plurality of cell (3) and said panel (2) is stuck between the panel edge (13) of said panel (2), and said panel (2) also is provided with positive stop lug boss (12) in its relative panel edge (13) inboard.
2. power battery pack according to claim 1, wherein, said power battery pack also comprises the side plate (5) that is installed in the battery pack both sides, and is separately installed with sealing gasket in baffle plate (1), panel (2) and side plate (5) junction separately.
3. power battery pack according to claim 2, wherein, said side plate (5) is fixed on the said panel (2) through securing member.
4. power battery pack according to claim 3, wherein, the material of said side plate (5) is the compound of polyphenylene oxide and glass fiber.
5. power battery pack according to claim 4, wherein, the matrix thickness of said side plate (5) is 3mm-5mm.
6. power battery pack according to claim 5, wherein, the outer surface of said side plate (5) is provided with the side plate reinforcement that thickness is 5mm-10mm.
7. power battery pack according to claim 1, wherein, through hole (9) quantity on each plate washer edge (11) of said plate washer (1) is 2-4.
8. according to each described power battery pack of claim 1-7, wherein, be provided with dividing plate (4) between per two of said a plurality of cells (3).
9. power battery pack according to claim 8, wherein, the material of said baffle plate (1) is the compound of polyphenylene oxide and glass fiber.
10. power battery pack according to claim 9, wherein, the matrix thickness of said baffle plate (1) is 3mm-5mm.
11. power battery pack according to claim 10, wherein, the outer surface of said baffle plate (1) is provided with the baffle plate reinforcement (6) that thickness is 5mm-12mm.
12. power battery pack according to claim 8, wherein, the material of said panel (2) is the compound of polyphenylene oxide and glass fiber.
13. power battery pack according to claim 12, wherein, the matrix thickness of said panel (2) is 3mm-5mm.
14. power battery pack according to claim 13, wherein, the outer surface of said panel (2) is provided with the panel reinforcement (7) that thickness is 5mm-10mm.
CN2008101670537A 2008-10-09 2008-10-09 Power battery pack for vehicle Active CN101719537B (en)

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CN101719537B true CN101719537B (en) 2012-05-09

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102810653B (en) * 2011-05-31 2015-05-20 杭州市电力局 Cell assembly frame
CN104183799B (en) * 2013-05-27 2018-02-09 北京理工大学 Battery case with multiple ring sections construction
CN110085781B (en) * 2018-01-25 2022-04-05 车王电子股份有限公司 Battery fixing frame and side frame thereof
JP6962230B2 (en) * 2018-02-16 2021-11-05 トヨタ自動車株式会社 Battery pack
CN110406363A (en) * 2019-08-16 2019-11-05 江西宜春客车厂有限公司 A kind of battery anticollision boom device
CN114361687A (en) * 2022-01-17 2022-04-15 河北交通职业技术学院 New energy automobile battery damping device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101141008A (en) * 2006-09-06 2008-03-12 日立车辆能源株式会社 Secondary battery module
CN201345386Y (en) * 2008-10-09 2009-11-11 比亚迪股份有限公司 Vehicle power battery pack

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101141008A (en) * 2006-09-06 2008-03-12 日立车辆能源株式会社 Secondary battery module
CN201345386Y (en) * 2008-10-09 2009-11-11 比亚迪股份有限公司 Vehicle power battery pack

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