CN104900939A - Lithium ion battery pack - Google Patents
Lithium ion battery pack Download PDFInfo
- Publication number
- CN104900939A CN104900939A CN201510270170.6A CN201510270170A CN104900939A CN 104900939 A CN104900939 A CN 104900939A CN 201510270170 A CN201510270170 A CN 201510270170A CN 104900939 A CN104900939 A CN 104900939A
- Authority
- CN
- China
- Prior art keywords
- power brick
- box
- lithium ion
- ion battery
- battery modules
- 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.)
- Granted
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000011449 brick Substances 0.000 claims description 112
- 238000003825 pressing Methods 0.000 claims description 31
- 239000012809 cooling fluid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 10
- 241001508691 Martes zibellina Species 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a lithium ion battery pack which comprises a water cooling box, a switch box, a lower box of the battery pack, a water cooling plate, battery modules and an upper cover of the battery pack, wherein the water cooling plate is positioned at the bottom of the lower box of the battery pack; the battery modules are arranged on the water cooling plate; the upper cover of the battery pack is positioned on the battery modules and can be fitted with the lower box of the battery pack so as to form a closed box, and the water cooling plate and the battery modules are contained in the box; the switch box and a water cooling box are arranged outside the lower box of the battery pack and at the bottom of the lower box of the battery pack, and the lower box of the battery pack is provided with a high-voltage connector and a low-voltage connector connected with high-voltage connecting line and low-voltage connecting lines of the battery modules; the switch box is internally provided with a first connector connected with the high-voltage connector and the low-voltage connector, and a second connector connected with an external wire; and the water cooling box is provided with a liquid inlet and a liquid outlet. With the adoption of the lithium ion battery pack provided by the embodiment of the invention, the energy intensity of the battery pack can be improved under same space volume, and sable and safe cruising power is provided for a new energy automobile.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of lithium ion battery bag.
Background technology
At present, along with the fast development of new-energy automobile industry, how to improve new-energy automobile stability and safety flying power and be more and more subject to people's attention.In existing new-energy automobile power battery, lithium ion battery production cost is relatively low, and can recharge, uses also very convenient, compares other and can carry the energy and have higher cost advantage.
In prior art, lithium ion battery bag inside not only will comprise battery modules, also will comprise the switch enclosure be made up of battery management system, relay and fuse etc. appliance component simultaneously.This switch enclosure is that requisite part is made in lithium ion battery job contract.Battery management system in this switch enclosure, for managing battery modules, the sampling wire harness of battery modules all needs to be connected on battery management system, ensures the normal work of lithium ion battery bag.The safety of circuit when relay and fuse may be used to ensure lithium ion battery work.In view of the importance of this switch enclosure, lithium ion battery bag inside is needed to provide independent space, to arrange this switch enclosure.Battery modules simultaneously in lithium ion battery bag operationally can produce heat, affects the performance of lithium ion battery, time serious, lithium ion battery bag even can be caused to scrap.Therefore in order to ensure the normal work of lithium ion battery bag, and extending its useful life, usually also needing to arrange water-cooled box and cooled plate in lithium ion battery bag.Cooled plate can be arranged near battery modules, and this water-cooled box by the water-cooling system of the external car load of liquid in-out mouth, and communicates with the runner in cooled plate, thus takes away heat, realizes cooled plate refrigeration, thus ensures that battery modules works at suitable temperature.
Based on the above, be not only provided with switch enclosure, be also provided with water-cooled box in lithium ion battery bag of the prior art, when providing same charge, institute takes up space comparatively large, causes the energy density of lithium ion battery bag less.
Summary of the invention
The invention provides a kind of lithium ion battery bag, comprising: water-cooled box, switch enclosure, power brick lower box, cooled plate, battery modules and power brick upper cover;
Wherein said cooled plate is positioned at the bottom of described power brick lower box; Described battery modules is arranged on described cooled plate; Described power brick upper cover is positioned on described battery modules, and can match with described power brick lower box, and form a closed casing, described cooled plate and described battery modules are contained in described casing;
Described switch enclosure and described water-cooled box are arranged on outside described power brick lower box, the bottom of described power brick lower box; Described power brick lower box is provided with the high and low pressure connector be connected with the high and low pressure connecting line of described battery modules; Be provided with the first connector in described switch enclosure, described first connector can be connected by the mode patched with described high and low pressure connector; The second connector be connected with outside line is also integrated with in described switch enclosure; Be provided with inlet and liquid outlet in described water-cooled box, the flow channel entry point arranged in described cooled plate and runner exit, through bottom described power brick lower box, enter described water-cooled box, and are connected with described inlet and described liquid outlet respectively.
Further, above-mentioned lithium ion battery bag also comprises wire harness protection lower cover and wire harness protection upper cover; Described wire harness protection lower cover is set in described battery modules surrounding, and cover under described wire harness protection and be provided with low voltage wiring harness cable tray and the hole for fixing low voltage wiring harness wiring, described low voltage wiring harness is drawn from described battery modules; Described wire harness protection upper cover and described wire harness protection lower cover snapping, to be enclosed in described low voltage wiring harness in described wire harness protection lower cover.
Further, above-mentioned lithium ion battery bag, two end plates relative between described battery modules is provided with at least two module pressing plates.
Further, above-mentioned lithium ion battery bag, wherein said module pressing plate comprises base plate and supporting bracket, and described supporting bracket perpendicular to described base plate, and is arranged on the side of described base plate; The described supporting bracket being positioned at two pieces of middle, adjacent described module pressing plates of described battery modules is set to one, and the described base plate of adjacent two pieces of described module pressing plates at grade, forms integral type module pressing plate.
Further, above-mentioned lithium ion battery bag, the two ends of the described base plate of wherein said module pressing plate are respectively arranged with fixing hole, adopt fixed part to be pressed on two pieces of corresponding described end plates by described module pressing plate by the described fixing hole at described base plate two ends.
Further, above-mentioned lithium ion battery bag, wherein said integral type module pressing plate is provided with cylindrical structure, to support described power brick upper cover; Described cylindrical structure perpendicular to described base plate, be pressed on described supporting bracket.
Further, above-mentioned lithium ion battery bag, arranges porose position in wherein said cylindrical structure, described power brick covers and is provided with through hole, adopts stud by described through hole and position, described hole, described power brick upper cover and described cylindrical structure is fixed together.
Further, above-mentioned lithium ion battery bag, wherein said power brick lower box and described power brick upper cover are provided with turnup structure.
Further, above-mentioned lithium ion battery bag, the turnup structure of wherein said power brick lower box and the turnup structure of described power brick upper cover are provided with perforate, adopt bolt and nut by the described perforate on the turnup structure of the described perforate on the turnup structure of described power brick lower box and described power brick upper cover, described power brick lower box and described power brick upper cover are fixed together.
Further, above-mentioned lithium ion battery bag, wherein when described lithium ion battery bag comprises at least two pieces of cooled plate, is provided with shunt in described water-cooled box, shunts for the cooling fluid flow to described inlet.
Lithium ion battery bag of the present invention, by the switch enclosure in power brick and water-cooled box being positioned over the outside of power brick, save the space of power brick inside, achieve the energy density improving power brick when waiting spatial volume, thus the flying power of stability and safety can be provided for new-energy automobile.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural blast figure of lithium ion battery bag embodiment one of the present invention;
Fig. 2 is another structure chart of the lithium ion battery bag shown in Fig. 1;
Fig. 3 is the structural blast figure of lithium ion battery bag embodiment two of the present invention;
Fig. 4 is the structure for amplifying schematic diagram of the battery modules in Fig. 3;
Fig. 5 is the structure for amplifying schematic diagram of the integral type module pressing plate in Fig. 3.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural blast figure of lithium ion battery bag embodiment one of the present invention.Fig. 2 is another structure chart of the lithium ion battery bag shown in Fig. 1.Wherein as shown in Figure 1, the lithium ion battery bag of the present embodiment, comprising: water-cooled box 1, switch enclosure 2, power brick lower box 3, cooled plate 4, battery modules 5 and power brick upper cover 6.
As shown in Figure 1, wherein cooled plate 4 is positioned at the bottom of power brick lower box 3, battery modules 5 is arranged on cooled plate 4, power brick upper cover 6 is positioned on battery modules 5, and can match with power brick lower box 3, form a closed casing, cooled plate 4 and battery modules 5 are contained in casing.Particularly, Fig. 2 for shown in Fig. 1 lithium ion battery packaging prepare after state diagram.As shown in Figure 2, after being placed in power brick lower box 3 by cooled plate 4 and battery modules 5, power brick upper cover 6 is positioned on battery modules 5, and power brick upper cover 6 can match with power brick lower box 3, forms the casing closed as shown in Figure 2.Wherein power brick nowel 3 carries whole power brick weight, and sheet metal component bending can be adopted to weld, or sheet metal component punch welding, or aluminium alloy casting, or the mode manufacture such as aluminium alloy compression casting forms.Particularly, as shown in Figure 1, battery modules 5 in the lithium ion battery bag of the present embodiment lies on cooled plate 4, in lithium ion battery bag, the quantity of concrete battery modules 5 of placing is relevant with the size of power brick lower box 3, and the quantity of the battery modules of the larger placement of size of power brick lower box 3 is more.As shown in Figure 1, to place 8 pieces of battery modules 5, technical scheme of the present invention is described, wherein 4 pieces of battery modules 5 are placed in one piece of cooled plate 4 as a Battery pack module, and another 4 pieces of battery modules 5 are placed in another block cooled plate 4 as another Battery pack module; 4 pieces of battery modules 5 in every block cooled plate 4 are adjacent between two, placed side by side; And it is relative respectively with 4 pieces of battery modules in another block cooled plate 4; And two have certain interval in the middle of Battery pack module 5.
Wherein, cooled plate 4 can be set to one piece or polylith according to the design of battery modules 5, and will ensure that each the block battery core in battery modules 5 can both touch with cooled plate 4, to be lowered the temperature by cooled plate 4.For two pieces of cooled plate 4 in Fig. 1.The cooling interface close contact of cooled plate 4 and battery modules 5, when cooling fluid enters cooled plate 4, after certain runner, take away the heat of lithium ion battery bag inside, thus the radiating effect of cooled plate 4 pairs of battery modules 5 can be ensured to the full extent, the temperature of battery modules 5 is enable to remain in suitable temperature, to reach its best-of-breed functionality performance.In addition, the layout of cooled plate 4 inner flow passage, can change according to actual needs.
As depicted in figs. 1 and 2, the switch enclosure 2 in the present embodiment and water-cooled box 1 are arranged on outside casing, the bottom of power brick lower box 3; Power brick lower box 3 is provided with the high and low pressure connector be connected with the high and low pressure connecting line of battery modules 5, such as, particularly, this high and low pressure connector can be arranged on the bottom of power brick lower box 3, the position near installation switch enclosure 2.Be provided with the first connector in switch enclosure 2, this first connector can be connected by the mode patched with high and low pressure connector on power brick lower box 3.Particularly, high and low pressure connector for the ease of power brick lower box 3 is arranged is connected with the first connector in switch enclosure 2, and this high and low pressure connector specifically can be arranged on the position of the outer surface (namely installing the surface of switch enclosure 2) of the bottom of power brick lower box 3, close switch enclosure 2.Like this, during use, the first connector directly can be connected by patching with high and low pressure connector.And in switch enclosure 2, being also integrated with the second connector be connected with outside, this second connector is also connected by patching with outside line, realizes carrying out discharge and recharge to the battery core in battery modules 5.Circuit between second connector and the first connector realize outside line to battery modules 5 high and low pressure connecting line between connection.The present embodiment to be patched with outside line by employing second connector and is connected, first connector is connected by patching with the high and low pressure connector be arranged on bottom power brick lower box 3, thus realize the connection of outside line to the high and low line ball of battery modules 5, very easy to use, safety.
Further, be provided with inlet and liquid outlet in the water-cooled box 1 of the present embodiment, the flow channel entry point arranged in cooled plate 4 and runner exit, through bottom power brick lower box 3, enter water-cooled box 1, and are connected with the inlet of water-cooled box 1 and liquid outlet respectively.
Wherein the water-cooled box 1 of the present embodiment can be blind boxes shape, can be also uncovered box-shape, is arranged on that casing is outer, the bottom of power brick lower box 3, is fixed by fixed part and power brick lower box 3.Inlet in water-cooled box 1 and liquid outlet are connected with the refrigerating system of car load respectively, the inlet of water-cooled box 1 accesses cooling fluid from the refrigerating system of car load, then cooling fluid is flow to cooled plate 4 from the flow channel entry point of cooled plate 4, because cooled plate 4 and battery modules 5 fit tightly, like this, the cooling fluid flowed in cooled plate 4 can take away the heat produced when battery modules 5 works, the cooling fluid taking away heat through the runner exit of cooled plate 4 to the liquid outlet of water-cooled box 1, be back to the refrigerating system of car load again, thus realize the cooling of cooled plate 4 pairs of battery modules 5.Water-cooled box 1 can be fixed on outside casing 1 by fixation kit, the bottom of power brick lower box 1.When water-cooled box 1 is uncovered box body, in order to ensure the sealing of water-cooled box, the region that water-cooled box 1 contacts with the bottom of power brick lower box 1 can arrange the rubber slab of sealing joint strip or sealing, to ensure the waterproof and dustproof of water-cooled box 1.And fixing for the ease of water-cooled box 1, the box opening of water-cooled box 1 can be set to turnup structure.
As shown in Figure 1, the switch enclosure 2 of the present embodiment can be blind boxes shape, also can be uncovered box-shape, be arranged on the bottom of power brick lower box 3, be fixed by fixed part and power brick lower box 3, the electric elements such as battery control system, relay, fuse, connector can be integrated with, for controlling the function such as switch, discharge and recharge of whole power brick in it.Wherein, the connector in the present embodiment can comprise the first connector that the high and low pressure connector of drawing with the battery modules 5 of power brick inside matches, and the second connector be connected with outside line.By this type of attachment of connector, conveniently electric elements in switch enclosure safeguarded and change, compact conformation, easy to assembly.When switch enclosure 2 is uncovered box-shape, the rubber slab of sealing joint strip or sealing can also be increased in the place contacted with power brick lower box 3, thus further ensure switch enclosure 2 water proof and dust proof.And fixing for the ease of switch enclosure 2, the box opening of switch enclosure 2 can be set to turnup structure.
The present embodiment lithium ion battery bag, by by lithium ion battery bag of the prior art by switch enclosure and the water-cooled box outside as power brick, achieve the integrated level improved when providing same charge in power brick.Solve owing to needing to provide independent space in power brick inside for switch enclosure, can cause reducing integrated level thus low, thus affect the problem of the energy density of power brick.Therefore, the technical scheme of the present embodiment, improves the energy density of power brick when the spatial volume such as to can be implemented in, and can provide the flying power of stability and safety for new-energy automobile; Further, by switch enclosure and water-cooled box external, be convenient to very much the maintenance of switch enclosure and water-cooled box; Especially switch enclosure comprises connector and fuse etc. and overhauls parts frequently, when overhauling, need not open whole lithium ion battery bag, only needs to open switch enclosure and can realize maintenance, very easy to use.
Fig. 3 is the structural blast figure of lithium ion battery bag embodiment two of the present invention.As shown in Figure 3, the lithium ion battery of the present embodiment wraps on the basis of above-described embodiment one, can also comprise following technical scheme.
As shown in Figure 3, the lithium ion battery bag of the present embodiment, also comprises wire harness protection lower cover 7 and wire harness protection upper cover 8; Wire harness protection lower cover 7 is set in battery modules 5 surrounding, and wire harness protection lower cover 7 is provided with low voltage wiring harness cable tray and the hole for fixing low voltage wiring harness wiring, low voltage wiring harness is drawn from battery modules 5; Wire harness protection upper cover 8 and wire harness protection lower cover 7 snapping, to be enclosed in low voltage wiring harness in described wire harness protection lower cover.
Fig. 4 is the structure for amplifying schematic diagram of the battery modules in Fig. 3.As shown in Figure 4, battery modules 5 comprises module end plate 5-1, and low voltage wiring harness draws port 5-2, and module upper cover 5-3, module base plate 5-4, module side plate 5-5 wherein can be provided with multiple battery core in battery modules 5 inside.As shown in Figure 3, the battery modules overall structure formed for 8 pieces of battery modules 5 describes technical scheme of the present invention.In practical application, the quantity of the battery modules 5 that battery modules overall structure comprises can be set according to demand.As shown in Figure 3; the size of wire harness protection lower cover 7 is corresponding with the integrally-built size of battery modules; size is advisable for being accurately enclosed within the integrally-built surrounding of battery modules; and wire harness protection lower cover 7 is provided with to draw with low voltage wiring harness and detains corresponding groove, wire harness protection lower cover 7 can be accurately buckled in battery modules overall structure.Also being provided with low voltage wiring harness cable tray in wire harness protection lower cover 7, for being placed in low voltage wiring harness cable tray drawing from low voltage wiring harness the low voltage wiring harness smashing extraction, making low voltage wiring harness can with certain direction proper alignment.Also be provided with the hole of fixing low voltage wiring harness wiring in wire harness protection lower cover 7, for carrying out wiring walking the low voltage wiring harness arranged in passage at low voltage wiring harness, play fixing effect, preventing low voltage wiring harness occurrence positions from changing.
As shown in Figure 3; the size of wire harness protection upper cover 8 is corresponding with the size of wire harness protection lower cover 7; can connect by arranging buckle between the two; after the low voltage wiring harness in wire harness protection lower cover 7 fixes; wire harness protection upper cover 8 is buckled on wire harness protection lower cover 7; low voltage wiring harness is enclosed in wire harness protection lower cover 7, forms a hermetically-sealed construction, enhance sealing and fail safe.Can also increase hermetically-sealed construction at wire harness protection lower cover 7 and the place of wire harness protection upper cover 8 snapping, hermetically-sealed construction can be sealing joint strip, thus further ensures the water proof and dust proof of wire harness protection lid.
The present embodiment lithium ion battery bag, by arranging wire harness protection upper cover and wire harness protection lower cover in the surrounding of battery modules, what the low voltage wiring harness of battery modules being drawn arranged lines up, and leads to the high and low pressure connector on power brick lower box.And high-voltage wiring harness is drawn out to the high and low pressure connector of power brick lower box by wire harness between battery modules or copper bar; High and low pressure connector plugs with first in switch enclosure and is connected, thus can solve because cabling in lithium ion battery bag is complicated and various, the problem of interference mutually.
Further alternatively, as shown in Figure 3, the lithium ion battery bag of the present embodiment, two end plates relative between two pieces in battery modules overall structure relative battery modules 5 is provided with at least two module pressing plates 9.This module pressing plate comprises base plate 10 and supporting bracket 11, and supporting bracket 11 perpendicular to base plate 10, and is arranged on the side of base plate 10; The supporting bracket 11 being wherein positioned at two pieces of middle, adjacent module pressing plates 9 of battery modules 5 is set together, and forms integral type module pressing plate.Fig. 5 is the structure for amplifying schematic diagram of the integral type module pressing plate in Fig. 3.As shown in Figure 5, the supporting bracket 11 that this integral type module pressing plate comprises two module pressing plates, 9, two module pressing plates 9 is set to one, and the base plate 10 of two module pressing plates 9 lays respectively at the both sides of supporting bracket 11, and vertical respectively at supporting bracket 11.
Because module pressing plate 9 is arranged on two pieces of relative battery modules end plates, for compressing relative two relative battery modules 5 downwards, therefore, as shown in Figure 4, for the ease of fixing module pressing plate 9 on end plate, be respectively arranged with fixing hole S at the two ends of the base plate 10 of module pressing plate 9, as shown in Figure 4, be respectively provided with fixing hole S at base plate 10 two ends being positioned at supporting bracket 11 both sides.Fixed part is adopted to be pressed on corresponding two end plates by module pressing plate 9 by the fixing hole S at base plate 10 two ends.
Further alternatively, as shown in Figure 5, integral type module pressing plate is provided with cylindrical structure 12, wraps lid with support cells.When assembling is complete, time together with being covered with power brick lower box 3 by power brick upper cover 6, this cylindrical structure 12 just in time at the intermediate supports power brick upper cover 6 of power brick upper cover, can deform when preventing power brick upper cover 6 to be pressed downward.As shown in Figure 5, this cylindrical structure 12 perpendicular to base plate 10, be pressed on supporting bracket 11.
It should be noted that; and as shown in Figure 4; port 5-2 is drawn owing to being provided with low voltage wiring harness in battery modules 5; the low voltage wiring harness of drawing for the ease of drawing button to all low voltage wiring harness carries out regular; at needs in the middle of wire harness protection upper cover 8 with wire harness protection lower cover 7; low voltage wiring harness in corresponding battery modules 5 draws the position of port 5-2, is also provided with low voltage wiring harness cable tray and the hole for fixing low voltage wiring harness wiring, regular with what realize all low voltage wiring harness.And above-mentioned wire harness protection upper cover 8 is reserved with wire harness protection lower cover 7 is middle the hole can passed for cylindrical structure 12, is convenient to cylindrical structure 12 and fixes through this hole and power brick upper cover 6.
Further alternatively, in order to ensure that power brick lower box 3 and power brick upper cover 6 can form a closed casing, can arrange together with rivet between power brick lower box 3 with power brick upper cover 6, or buckle can be set power brick lower box 3 and power brick upper cover 6 are connected together; Or other connected modes can also be adopted both to be linked together.Or for the ease of installing, in the present embodiment, on power brick lower box 3 with power brick upper cover 6, all can also can be set to turnup structure, fitting tightly of power brick lower box 3 and power brick upper cover 6 can be ensured, further enhancing sealing and the fail safe of casing.
Further alternatively, in order to ensure the connectivity robustness of power brick lower box 3 and power brick upper cover 6, perforate can be provided with on the turnup structure of the turnup structure of power brick lower box 3 and power brick upper cover 6, adopt bolt and nut by the described perforate on the turnup structure of the perforate on the turnup structure of power brick lower box 3 and power brick upper cover 6, power brick lower box 3 and power brick upper cover 6 are fixed together.Further alternatively, in order to ensure the sealing of whole casing, hermetically-sealed construction can also be set between the turnup structure of power brick lower box 3 and the turnup structure of power brick upper cover 6, such as sealing structure can be sealing joint strip, thus further ensures sealing and the water proof and dust proof of power brick.In addition, power brick upper cover according to stressing conditions and applying working condition, can adopt different surface patterns and technique.
Further alternatively, when lithium ion battery bag comprises at least two pieces of cooled plate 4, shunt can be provided with in water-cooled box 1, cooling fluid for flowing to inlet is shunted, particularly, the water-cooled liquid attracted from car load refrigerating system is divided into twenty percent two strands by shunt, enters cooled plate 4 respectively from the flow channel entry point of two cooled plate 4; After the heat taking away the battery modules contacted with cooled plate 4, water-cooled liquid flows out from two runner exits of two cooled plate 4 respectively, then converge in water-cooled box 1, and return the refrigerating system of car load, thus ensure that the heat radiation of battery modules 5, can work under a balanced temperature regime.When lithium ion battery bag comprises polylith cooled plate 4, cooling fluid is divided into multiply by the shunt correspondence arranged in water-cooled box 1, and principle is similar, does not repeat them here.
Comprise above-mentioned all alternatives to be characterized as example description technical scheme of the present invention in Fig. 3, in practical application, above-mentioned all alternatives features can adopt combinable mode combination in any and with above-mentioned technical scheme embodiment illustrated in fig. 1, form optional embodiment of the present invention, this is no longer going to repeat them.
The present embodiment lithium ion battery bag, by adding the structures such as module pressure plate structure, flange, achieve the lifting of the steadiness of lithium ion battery bag internal structure, when can also improve power brick intensity and wait spatial volume, power brick energy density, can also strengthen fail safe and the water proof and dust proof of lithium ion battery bag simultaneously.The problem that when solving prior art medium spatial volume, power brick energy density is low, can provide the flying power of stability and safety for new-energy automobile simultaneously.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a lithium ion battery bag, is characterized in that, comprising: water-cooled box, switch enclosure, power brick lower box, cooled plate, battery modules and power brick upper cover;
Wherein said cooled plate is positioned at the bottom of described power brick lower box; Described battery modules is arranged on described cooled plate; Described power brick upper cover is positioned on described battery modules, and can match with described power brick lower box, and form a closed casing, described cooled plate and described battery modules are contained in described casing;
Described switch enclosure and described water-cooled box are arranged on outside described power brick lower box, the bottom of described power brick lower box; Described power brick lower box is provided with the high and low pressure connector be connected with the high and low pressure connecting line of described battery modules; Be provided with the first connector in described switch enclosure, described first connector can be connected by the mode patched with described high and low pressure connector; The second connector be connected with outside line is also integrated with in described switch enclosure; Be provided with inlet and liquid outlet in described water-cooled box, the flow channel entry point arranged in described cooled plate and runner exit, through bottom described power brick lower box, enter described water-cooled box, and are connected with described inlet and described liquid outlet respectively.
2. lithium ion battery bag according to claim 1, is characterized in that, also comprises wire harness protection lower cover and wire harness protection upper cover; Described wire harness protection lower cover is set in described battery modules surrounding, and cover under described wire harness protection and be provided with low voltage wiring harness cable tray and the hole for fixing low voltage wiring harness wiring, described low voltage wiring harness is drawn from described battery modules; Described wire harness protection upper cover and described wire harness protection lower cover snapping, to be enclosed in described low voltage wiring harness in described wire harness protection lower cover.
3. lithium ion battery bag according to claim 1 and 2, is characterized in that, two end plates relative between described battery modules is provided with at least two module pressing plates.
4. lithium ion battery bag according to claim 3, is characterized in that, described module pressing plate comprises base plate and supporting bracket, and described supporting bracket perpendicular to described base plate, and is arranged on the side of described base plate; The described supporting bracket being positioned at two pieces of middle, adjacent described module pressing plates of described battery modules is set to one, and the described base plate of adjacent two pieces of described module pressing plates at grade, forms integral type module pressing plate.
5. lithium ion battery bag according to claim 4, it is characterized in that, the two ends of the described base plate of described module pressing plate are respectively arranged with fixing hole, adopt fixed part to be pressed on two pieces of corresponding described end plates by described module pressing plate by the described fixing hole at described base plate two ends.
6. lithium ion battery bag according to claim 5, is characterized in that, described integral type module pressing plate is provided with cylindrical structure, to support described power brick upper cover; Described cylindrical structure perpendicular to described base plate, be pressed on described supporting bracket.
7. lithium ion battery bag according to claim 5, it is characterized in that, in described cylindrical structure, porose position is set, described power brick covers and is provided with through hole, adopt stud by described through hole and position, described hole, described power brick upper cover and described cylindrical structure are fixed together.
8. lithium ion battery bag according to claim 1, is characterized in that, described power brick lower box and described power brick upper cover are provided with turnup structure.
9. lithium ion battery bag according to claim 8, it is characterized in that, the turnup structure of described power brick lower box and the turnup structure of described power brick upper cover are provided with perforate, adopt bolt and nut by the described perforate on the turnup structure of the described perforate on the turnup structure of described power brick lower box and described power brick upper cover, described power brick lower box and described power brick upper cover are fixed together.
10. lithium ion battery bag according to claim 1, is characterized in that, when described lithium ion battery bag comprises at least two pieces of cooled plate, is provided with shunt, shunts for the cooling fluid flow to described inlet in described water-cooled box.
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| CN201510270170.6A CN104900939B (en) | 2015-05-25 | 2015-05-25 | Lithium ion battery pack |
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| CN104900939A true CN104900939A (en) | 2015-09-09 |
| CN104900939B CN104900939B (en) | 2018-03-20 |
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| CN201510270170.6A Active CN104900939B (en) | 2015-05-25 | 2015-05-25 | Lithium ion battery pack |
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| CN106410324A (en) * | 2016-11-25 | 2017-02-15 | 江西迪比科股份有限公司 | Water-cooled new energy power battery |
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| CN107359292A (en) * | 2017-06-26 | 2017-11-17 | 合肥国轩高科动力能源有限公司 | Liquid cooling type fixing structure of battery system |
| CN108389984A (en) * | 2018-04-24 | 2018-08-10 | 北京新能源汽车股份有限公司 | Battery module assembly |
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| JP2019021500A (en) * | 2017-07-18 | 2019-02-07 | 矢崎総業株式会社 | Battery module and battery monitoring unit mounting structure |
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| CN109103371A (en) * | 2018-07-13 | 2018-12-28 | 湖北锂诺新能源科技有限公司 | A kind of battery pack installation assembly |
| US11527797B2 (en) | 2018-11-16 | 2022-12-13 | Contemporary Amperex Technology Co., Limited | Battery pack |
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| WO2020133674A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN110581302A (en) * | 2019-10-17 | 2019-12-17 | 北京普莱德新能源电池科技有限公司 | Battery module and electric device |
| WO2021141325A1 (en) * | 2020-01-07 | 2021-07-15 | 주식회사 엘지에너지솔루션 | Battery pack comprising hv wire assembly, and method for manufacturing battery pack |
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| CN113678311B (en) * | 2020-01-07 | 2023-07-07 | 株式会社Lg新能源 | Battery pack including high voltage wire assembly and method for manufacturing the same |
| CN112259864A (en) * | 2020-10-23 | 2021-01-22 | 上海兰钧新能源科技有限公司 | Soft package module, assembly process thereof and electric automobile |
| CN112510284A (en) * | 2020-11-13 | 2021-03-16 | 重庆金康动力新能源有限公司 | Liquid collecting groove of battery pack |
| CN113690522A (en) * | 2021-08-04 | 2021-11-23 | 大运汽车股份有限公司 | Disconnect-type battery package system |
| WO2023020401A1 (en) * | 2021-08-17 | 2023-02-23 | 蜂巢能源科技股份有限公司 | Vehicle body floor assembly and vehicle having same |
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Address after: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 Applicant after: Contemporary Amperex Technology Co.,Ltd. Address before: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 Applicant before: CONTEMPORARY AMPEREX TECHNOLOGY Ltd. |
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