WO2020181705A1 - 动力电池包、储能装置以及电动车 - Google Patents
动力电池包、储能装置以及电动车 Download PDFInfo
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- WO2020181705A1 WO2020181705A1 PCT/CN2019/097641 CN2019097641W WO2020181705A1 WO 2020181705 A1 WO2020181705 A1 WO 2020181705A1 CN 2019097641 W CN2019097641 W CN 2019097641W WO 2020181705 A1 WO2020181705 A1 WO 2020181705A1
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- frame
- battery pack
- power battery
- single battery
- pack according
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- H01M50/267—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders having means for adapting to batteries or cells of different types or different sizes
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- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
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- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- 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
Definitions
- the present disclosure relates to the technical field of power battery packs, in particular, to a power battery pack, an energy storage device using the power battery pack, and an electric vehicle using the power battery pack.
- the power battery pack mainly includes a containing device and a plurality of battery modules installed in the containing device.
- the battery module is mainly assembled from a plurality of single cells.
- the containing device usually includes a bottom plate and a side beam. The beams are arranged around the bottom plate.
- a plurality of transverse beams and longitudinal beams are usually arranged between the side beams, and the plurality of transverse beams, longitudinal beams and the side beams and the bottom plate jointly define a plurality of There are multiple accommodating spaces for battery modules, and each battery module is arranged in a corresponding accommodating space.
- the volume utilization rate of the containment device is low, which is about 40%, and the number of single batteries that can be installed is limited, which cannot effectively improve the endurance of the power battery pack;
- the traditional power battery pack contains many battery modules. During the assembly process, each battery module needs to be fixed to the beam, and a large number of screws and other fasteners are needed to fasten the modules.
- the beam or longitudinal beam has a certain weight, which causes the weight of the containment device to increase;
- the single cells need to be assembled into battery modules before they are arranged in the containing device, and the operation steps are complicated.
- the accommodating device is usually designed in a square or rectangular shape, which has a low degree of matching with the shape of the body chassis, and has a low utilization rate of the installation area of the body chassis, thereby reducing the single battery installed on the body The number of vehicles, thereby weakening the endurance of the vehicle.
- the present disclosure provides a power battery pack, an energy storage device using the power battery pack, and an electric vehicle using the power battery pack.
- the power battery pack can effectively increase the volume utilization rate of the containing device and improve the power battery pack Battery life.
- the present disclosure provides a power battery pack, which includes a containing device and a plurality of single cells arranged in the containing device.
- the containing device has a plurality of containing areas, and each containing area has an A first frame and a second frame arranged opposite to each other in one direction, and the single battery arranged between the first frame and the second frame, between the different accommodating areas, the first frame
- each single battery includes a first end and a second end opposite to each other, and at least one of the first end and the second end of the single battery The distance between and the corresponding distance between the first frame and the second frame matches.
- the first end of at least one single battery is supported on a corresponding first frame, and the second end of the single battery is supported on a corresponding second frame.
- the length direction of the single battery is substantially perpendicular to the first frame and the second frame, and in each accommodating area, the first end of the single battery and the The distance between the second ends is L1, the distance between the inner surface of the first frame and the inner surface of the second frame is L2, where L1/L2 ⁇ 50% is satisfied.
- the plurality of receiving areas include a central area and two side areas located on opposite sides of the central area, and the distance between the first frame and the second frame in the central area is greater than that of the two The distance between the first frame and the second frame in the side area is such that the plurality of receiving areas form a cross-shaped structure.
- the plurality of receiving areas include a first area and a second area located on one side of the first area, and the distance between the first frame and the second frame of the first area is greater than that of the The distance between the first frame and the second frame of the second area is such that the plurality of receiving areas form a T-shaped structure.
- At least one of the volume and the capacity of the unit cells in the different receiving areas is the same.
- the single battery is a square battery and has a length, a thickness, and a height between the length and the thickness, the single battery is placed on its side, and the size of the single battery
- the length direction is the first direction
- the thickness direction is the second direction
- the height direction is the third direction.
- the heights of the single cells in different accommodating areas are the same.
- the ratios are reciprocal of each other.
- the containing device is a tray for a vehicle.
- the length of the single cell is 500mm-1000mm.
- the receiving device is formed on an electric vehicle.
- the receiving device is a cavity recessed downward.
- the cavity includes a first side wall and a second side wall opposed to each other, and the first frame is a part of the first side wall and the first side wall of the cavity.
- An extension part, the second frame is an extension part of the second side wall and the second side wall of the cavity.
- the extension part of the first side wall and the extension part of the second side wall form the bottom of the cavity.
- 80% ⁇ L1/L2 ⁇ 97% is satisfied.
- the plurality of unit batteries are arranged in a second direction different from the first direction.
- the power battery pack is arranged with multiple layers of the multiple single cells along the third direction, and the multiple single cells in each layer are located on the first frame and the second frame. Between the borders.
- each single battery is arranged with the first direction as the length direction.
- the accommodating device further includes a third frame and a fourth frame arranged in a second direction different from the first direction, and the first frame and the second frame of the two side regions are far away
- One end of the central area is connected by the third frame, and the first frame and the second frame of the two side areas close to the central area are connected to the first frame of the central area through the fourth frame.
- the single cells in the two side areas are arranged between the third frame and the fourth frame along the second direction, and the single cells in the central area are arranged along the second direction Between the fourth frame.
- the third frame applies a force toward the two side regions to the single cells disposed adjacent to the third frame, and the fourth frame extends to the area adjacent to the fourth frame.
- the single battery provided by the frame exerts a force toward the central area.
- the first end of each single battery is fixed on a corresponding first frame, and the second end of each single battery is fixed on a corresponding second frame.
- a first end plate is provided between the first end of at least some of the plurality of single cells and the first frame
- the A second end plate is provided between the second end of at least part of the single battery and the second frame of the plurality of single batteries, and the first end of the at least part of the single battery is supported by the first end plate
- the second end of the at least part of the single battery is supported on the second frame through the second end plate; the first end plate, the second end plate and the at least Some single cells make up a battery module.
- a module bottom plate is provided under at least some of the plurality of single cells, and the module bottom plate is connected to the first end plate and Between the second end plates, the module bottom plate, the first end plate, the second end plate and the at least part of the single cells constitute the battery module.
- a module top plate is provided above at least some of the plurality of single cells, and the module top plate is connected to the first end plate and Between the second end plates, the module top plate, the module bottom plate, the first end plate, the second end plate and the at least part of the single cells constitute the battery module.
- a first side plate and a second side plate opposite to each other are provided between the first end plate and the second end plate, and the first end plate , A second end plate, a first side plate, a second side plate, a module top plate, a module bottom plate and the at least part of the single cells constitute the battery module.
- a module bottom plate is provided under at least part of the plurality of single cells, and the at least part of the cells is electrically supported by the module bottom plate.
- the module bottom plate and the at least part of the single cells form a battery module.
- each receiving area along a second direction different from the first direction, there are at least two battery modules in each receiving area.
- the power battery pack is arranged with multiple layers of the battery modules along the third direction.
- the single battery is a rectangular battery with a rectangular parallelepiped structure, and has a length, a thickness, and a height between the length and the thickness, and each single battery is placed on its side.
- the length direction of each of the single cells is the first direction
- the thickness direction is the second direction
- the height direction is the third direction.
- Two adjacent single cells in each accommodating area have a large surface. The way the noodles are arranged.
- the ratio of the length L to the thickness D of the single battery satisfies 50 ⁇ L/D ⁇ 70.
- the ratio of the surface area S to the volume V of the single battery satisfies 0.15 ⁇ S/V ⁇ 0.2.
- the ratio of the surface area S to the energy E of the single battery satisfies 250 ⁇ S/E ⁇ 400.
- the first frame in each receiving area, is provided with a first supporting step, and the second frame is provided with a second supporting step; the first end of each single cell Supported on the corresponding first supporting step, and the second end of each single cell is supported on the corresponding second supporting step.
- the first frame is provided with a first fixing part
- the second frame is provided with a second fixing part; the first end of each single battery is fixed to the first fixing part.
- the second end of each single battery is fixed on the second fixing part.
- the single battery is a metal shell square battery.
- a heat insulation layer is provided between the module bottom plate and the single cells.
- a heat conducting plate is provided between the top plate of the module and the single battery.
- the top plate of the module is a liquid cooling plate or a direct cooling plate with a cooling structure arranged inside.
- the first electrode of the single battery is led out from the single battery toward the first end of the first frame, and the second electrode of the single battery is led by the single battery.
- the body battery is led out toward the second end of the second frame.
- the single battery is provided with an explosion-proof valve facing the first end of the first frame, an exhaust channel is provided inside the first frame, and each The corresponding positions of the explosion-proof valves of each single battery are provided with an air inlet, the air inlet is in communication with the exhaust passage, and the containing device is provided with an exhaust hole in communication with the exhaust passage
- the second end of the single battery facing the second frame is provided with an explosion-proof valve
- an exhaust channel is provided inside the second frame
- the second frame is connected to each single battery
- the corresponding positions of the explosion-proof valve are all provided with an air inlet, the air inlet is in communication with the exhaust passage, and the containing device is provided with an exhaust hole communicating with the exhaust passage; or, the Both the first end of the single battery facing the first frame and the second end facing the second frame are provided with explosion-proof valves, and both the first frame and the second frame are provided with exhaust An air passage, an air inlet is provided on the first frame at a position corresponding to the explosion-proof valve
- the first direction is a vehicle body width direction
- the second direction is a vehicle body length direction
- the first direction is a vehicle body length direction
- the second direction is a vehicle body width direction
- the first end and the second end of the single battery are adapted to the first frame and the second frame, that is, the single battery is the first frame opposite to the receiving device.
- the second frame thereby reducing the use of beams or longitudinal beams in the accommodating device in the prior art, and even the accommodating device may not use the beams or longitudinal beams, thereby reducing the occupation of the beams or longitudinal beams in the accommodating device.
- This improves the space utilization of the containing device, and enables as many single batteries as possible to be arranged in the containing device, thereby increasing the capacity, voltage and endurance of the entire power battery pack. For example, in electric vehicles, this design can increase the space utilization rate from about 40% to more than 60% or even higher, such as 80%.
- the manufacturing process of the containing device is simplified, the assembly complexity of the single battery is reduced, and the production cost is reduced.
- the containing device and the entire power are reduced.
- the weight of the battery pack is reduced, and the weight of the power battery pack is realized.
- the endurance of the electric vehicle can be improved, and the weight of the electric vehicle can be reduced.
- the single battery provided in the present disclosure extends between the first frame and the second frame, and the single battery itself can be used as a beam or longitudinal to strengthen the structural strength of the receiving device.
- the beam that is to say, there is no need to provide a strengthening structure to strengthen its structural strength in the containment device.
- the single battery itself can replace the strengthening structure to ensure the structural strength of the containment device and ensure that the containment device is not prone to occur under external forces. deformation.
- the opposite ends of the single battery cannot fit the two oppositely arranged frames in the containing device;
- the length of the single battery in the disclosure along the first direction is longer, so that the thickness along the second direction different from the first direction can be made thinner, so that the surface area of a single single battery is larger than that in the prior art.
- the surface area of the battery can increase the heat dissipation area of the single battery and increase the heat dissipation rate of the single battery, thereby improving the safety of the entire power battery pack and making the power battery pack safer and more reliable.
- the accommodating device also has a plurality of accommodating areas, and the distance between the first frame and the second frame in each accommodating area in the first direction is different, that is, the accommodating device has multiple shapes and sizes.
- the structure and shape of the accommodation device can be adapted to the structure and shape of the installation space of the power battery pack on the electric vehicle, for example, when the power battery pack is installed
- the accommodating device can be adapted to the shape of the body chassis, so as to arrange as many single batteries as possible, thereby improving the endurance of the electric vehicle.
- an electric vehicle which includes the above-mentioned power battery pack.
- the power battery pack is arranged at the bottom of the electric vehicle, and the containing device is fixedly connected to the chassis of the electric vehicle.
- the electric vehicle includes a power battery pack disposed at the bottom of the electric vehicle, the accommodating device is fixedly connected to the chassis of the electric vehicle, and the plurality of single battery edges are different from The first direction is arranged in a second direction, the first direction is the width direction of the vehicle body of the electric vehicle, and the second direction is the length direction of the vehicle body of the electric vehicle.
- the plurality of receiving areas include a central area and two side areas located on opposite sides of the central area, and the distance between the first frame and the second frame of the central area is greater than that of the two sides.
- the distance between the first frame and the second frame of the area is such that the receiving area has a cross-shaped structure, and the outer sides of the two side areas in the second direction correspond to the wheel area of the electric vehicle.
- the ratio of the width L3 of the central area in the first direction to the vehicle body width W satisfies: 50% ⁇ L3/W ⁇ 80%.
- the ratio of the length L4 of the unit battery in the first direction to the vehicle body width W in the central area satisfies: 40% ⁇ L4/W ⁇ 70%.
- an energy storage device including the above-mentioned power battery pack.
- Figure 1 is an exploded schematic diagram of a power battery pack provided by the prior art
- FIG. 2 is a schematic diagram of a three-dimensional structure of a single battery provided by an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of a three-dimensional structure of a power battery pack provided by an embodiment of the present disclosure
- Figure 4 is a top view of a power battery pack provided by an embodiment of the present disclosure.
- Figure 5 is an exploded view of a power battery pack provided by an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of a three-dimensional structure of a receiving device provided by an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of a three-dimensional structure of a receiving device provided by another embodiment of the present disclosure.
- Figure 8 is an enlarged view of part A in Figure 7;
- FIG. 9 is a schematic diagram of a three-dimensional structure of a battery module provided by an embodiment of the present disclosure.
- FIG. 10 is a three-dimensional structural diagram of a power battery pack provided by another embodiment of the present disclosure, wherein there are multiple battery modules in each containing area;
- FIG. 11 is a schematic diagram of a three-dimensional structure of a power battery pack provided by still another embodiment of the present disclosure, wherein the battery modules in each containing area are multilayered;
- FIG. 12 is a cross-sectional perspective view of a power battery pack provided by an embodiment of the present disclosure.
- Figure 13 is an enlarged view of part B in Figure 12;
- FIG. 14 is an exploded view of a battery module provided by an embodiment of the present disclosure.
- 15 is a schematic diagram of a three-dimensional structure of a first side plate or a second side plate provided by an embodiment of the present disclosure
- 16 is a schematic diagram of a three-dimensional structure of a first end plate or a second end plate provided by an embodiment of the present disclosure
- 17 is a cross-sectional view of a power battery pack provided by an embodiment of the present disclosure, in which the first frame and the second frame are not shown;
- FIG. 18 is a three-dimensional structural diagram of a receiving device (cavity) provided on an electric vehicle according to an embodiment of the present disclosure
- 19 is a cross-sectional view of a cavity provided by an embodiment of the present disclosure.
- FIG. 20 is an exploded view of the storage device (car tray) provided by an embodiment of the present disclosure fixed on an electric vehicle;
- 21 is a schematic diagram of the structure of the electric vehicle of the present disclosure.
- FIG. 22 is a schematic diagram of the structure of the energy storage device of the present disclosure.
- orientation or positional relationship indicated by the used orientation words such as “up, down, left, right, top, bottom” are based on the orientation and positional relationship shown in the drawings.
- orientation words such as "up, down, left, right, top, bottom”
- first and second are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
- the directional words "front, rear, left, right” used in describing the electric vehicle generally refer to the front, rear, left, and right of the vehicle itself, and according to some embodiments of the present disclosure, toward the left wheel
- the direction of is left, the direction toward the right wheel is right, the direction toward the front of the car is front, and the direction toward the rear of the car is rear.
- a power battery pack 700 which includes a receiving device 200 and a plurality of single cells 100 arranged in the receiving device 200.
- the receiving device 200 has a plurality of receiving devices.
- Each receiving area has a first frame 201 and a second frame 202 arranged opposite to each other along the first direction A1, and a single battery 100 arranged between the first frame 201 and the second frame 202. Between the areas, the distances between the first frame 201 and the second frame 202 along the first direction A1 are different to form accommodating areas of different shapes and sizes.
- Each single cell 100 includes opposite first and second ends, The distance between the first end and the second end of the at least one single cell 100 matches the distance between the corresponding first frame 201 and the second frame 202.
- each single cell 100 extends between the first frame 201 and the second frame 202, and the plurality of single cells 100 are arranged along the length direction of the first frame 201 and the second frame 202, that is, along the second direction A2 arrangement.
- the “matching” mentioned above means that the distance between the two frames or the two side walls in the following can be matched to install a single battery 100. This kind of fit can be clearance fit, interference fit, Various fitting methods such as fastening fitting and fixed fitting can achieve the purpose of the present disclosure.
- the receiving device 200 needs to be provided with cross beams. 500 or stringer 600 (as shown in Fig. 1) to facilitate the assembly of single cells.
- the battery module 400 is fixed to the adjacent beam 500 by fasteners, or the battery module 400 is connected to the adjacent beams 500 by fasteners.
- the adjacent longitudinal beams 600 are fixed, or the battery module 400 is fixed to the adjacent transverse beams 500 and the adjacent longitudinal beams 600 by fasteners.
- the accommodating device 200 in the prior art is provided with a beam 500 or a longitudinal beam 600
- the beam 500 or the longitudinal beam 600 occupies a large amount of installation space for accommodating single batteries in the accommodating device 200, resulting in the volume utilization of the accommodating device 200
- the volume utilization rate of the containing device 200 is about 40% or even lower, that is, only about 40% of the space in the containing device 200 in the prior art can be used for installing single batteries.
- the number of single batteries that can be accommodated in the accommodating device 200 is limited, the capacity and voltage of the entire power battery pack 700 are limited, and the power battery pack 700 has poor endurance.
- the first end and the second end of the single battery 100 are matched with the first frame 201 and the second frame 202, that is, the single battery 100 is the first oppositely arranged on the receiving device 200.
- the frame 201 and the second frame 202 extend between the frame 201 and the second frame 202, thereby reducing the use of the transverse beam 500 or the longitudinal beam 600 in the receiving device 200 in the prior art, and even the transverse beam 500 or the longitudinal beam 600 may not be used in the receiving device 200, thereby reducing
- the space occupied by the beam 500 or the longitudinal beam 600 in the accommodating device 200 improves the space utilization rate of the accommodating device 200, and enables as many single batteries 100 as possible to be arranged in the accommodating device 200, thereby improving the entire power battery pack. 700 capacity, voltage and endurance.
- this design can increase the space utilization rate from about 40% to more than 60% or even higher, such as 80%.
- the manufacturing process of the containing device 200 is simplified, the assembly complexity of the single battery 100 is reduced, and the production cost is reduced.
- the weight of the accommodating device 200 and the entire power battery pack 700 is reduced, and the weight of the power battery pack 700 is reduced.
- the endurance of the electric vehicle 800 can also be improved, and the weight of the electric vehicle 800 can be reduced.
- the single battery 100 provided in the present disclosure extends between the first frame 201 and the second frame 202, and the single battery 100 itself can be used as the structure of the reinforced receiving device 200 Strength beams or longitudinal beams, that is to say, there is no need to provide a strengthening structure to strengthen its structural strength in the containment device.
- the single battery 100 itself can replace the strengthening structure to ensure the structural strength of the containment device 200 and ensure the containment The device 200 is not easily deformed under external force.
- the single battery 100 in the present disclosure has a longer length in the first direction A1, which can make its thickness in the second direction A2 different from the first direction A1 thinner, so that the surface area of the single battery 100 It is larger than the surface area of the single battery in the prior art, so that the heat dissipation area of the single battery 100 can be increased, and the heat dissipation rate of the single battery 100 can be increased, thereby improving the safety of the entire power battery pack 700 and making the power battery pack 700 more secure. Safe and reliable.
- the accommodating device 200 also has a plurality of accommodating areas, and the distance between the first frame 201 and the second frame 202 in each accommodating area along the first direction A1 is different, that is, the accommodating device 200 has multiple There are accommodating areas with different shapes and sizes.
- the structure and shape of the accommodating device 200 can be adapted to the structure and shape of the installation space of the power battery pack 700 on the electric vehicle 800
- the accommodating device 200 can be adapted to the shape of the chassis of the vehicle body, so as to arrange as many single batteries 100 as possible, thereby improving the endurance of the electric vehicle 800. ability.
- the first end of at least one single battery 100 is supported on the corresponding first frame 201, and the second end of the single battery 100 is supported on the corresponding second frame 202.
- the first end and the second end of the single battery 100 can be respectively placed on the first frame 201 and the second frame 202, or can be fixed on the first frame 201 and the second frame 202.
- the specific fixing method will be described in detail below. Description, the present disclosure does not limit the specific support and fixing method.
- the support can be direct support or indirect support.
- the direct meaning means that the first end of the single battery 100 and the first frame 201 are directly contacted and supported, and the second end of the single battery 100 and the second frame 202 are directly contacted and matched.
- Indirect meaning means that, for example, in some embodiments, the first end of the single battery 100 is supported by the first end plate 205 and the first frame 201, and the second end of the single battery 100 passes through the second end plate 206 Cooperate and support with the second frame 202.
- the first end of each single battery 100 is fixed on the corresponding first frame 201, and the second end of each single battery 100 is fixed on the corresponding second frame 202.
- the fixed connection mode can support the single cell 100 in the third direction A3; on the other hand, the fixed connection mode can improve the stability and firmness of the overall structure.
- there are many ways of fixing for example, the first end of each single cell 100 is detachably fixed to the first frame 201 by a fastener, and the second end is detachably fixed to the second frame by a fastener.
- each single battery 100 On the frame 202; or, the first end and the second end of each single battery 100 are respectively fixed on the first frame 201 or the second frame 202 by welding; or, the first end of each single battery 100 and The second end is respectively fixed on the first frame 201 or the second frame 202 by dispensing glue.
- first frame 201 and the second frame 202 can be parallel to each other, can also be arranged at an angle, and can be a linear structure or a curved structure.
- the single battery 100 may be perpendicular to the first frame 201, or the single battery 100 and the second frame 202 may be perpendicular, or the single battery 100 and the first frame 201 may be arranged at an acute or obtuse angle, or the single battery 100 and the second The frame 202 is arranged at an acute or obtuse angle.
- the receiving device 200 formed by the first frame 201 and the second frame 202 may have a rectangular, square, parallelogram, or fan-shaped structure;
- the receiving device 200 formed by the first frame 201 and the second frame 202 may have a trapezoidal, triangular, or other structure.
- the present disclosure does not limit the angular relationship between the first frame 201 and the second frame 202, and the angular relationship between the single battery 100 and the first frame 201 and the second frame 202.
- the distance between the first frame 201 and the second frame 202 is a sudden change in size; while for the first frame 201 and the second frame 202
- the distance between the first border 201 and the second border 202 is gradually changing in size.
- the spacing between 202 refers to the average of the spacing between the first frame 201 and the second frame 202 in the receiving area.
- first frame 201 and the second frame 202 are located on opposite sides of the receiving device 200 along the first direction A1, which means that the first frame 201 and the second frame 202 are located at the outermost edge of the receiving device 200 along the first direction A1.
- the sides, that is, the first frame 201 and the second frame 202 are the outermost sides of the receiving device 200.
- first end and second end of the single battery 100 mentioned above and below are used to describe the orientation of the single battery 100, and are not used to limit and describe the specific structure of the single battery 100.
- first end and the second end are not used to define and describe the positive electrode and the negative electrode of the single battery 100, that is, in the present disclosure, the end of the single battery 100 matching the first frame 201 is the first end , The end of the single battery 100 matching the second frame 202 is the second end.
- the single battery 100 can be assembled between the first frame 201 and the second frame 202 in various embodiments.
- the first end of each single battery 100 is supported on a corresponding first frame.
- the second end of each single battery 100 is supported on the corresponding second frame 202.
- the first end and the second end of the single battery 100 can be respectively placed on the first frame 201 and the second frame 202, or can be fixed on the first frame 201 and the second frame 202.
- the specific fixing method will be described in detail below. Description, the present disclosure does not limit the specific support and fixing method.
- the support can be direct support or indirect support.
- the direct meaning means that the first end of the single battery 100 and the first frame 201 are directly contacted and supported, and the second end of the single battery 100 and the second frame 202 are directly contacted and matched.
- Indirect meaning means that, for example, in some embodiments, the first end of the single battery 100 is supported by the first end plate 205 and the first frame 201, and the second end of the single battery 100 passes through the second end plate 206 Cooperate and support with the second frame 202.
- the first end of each single battery 100 is fixed on the corresponding first frame 201, and the second end of each single battery 100 is fixed on the corresponding second frame 202.
- the fixed connection mode can support the single cell 100 in the third direction A3; on the other hand, the fixed connection mode can improve the stability and firmness of the overall structure.
- there are many ways of fixing for example, the first end of each single cell 100 is detachably fixed to the first frame 201 by a fastener, and the second end is detachably fixed to the second frame by a fastener.
- each single battery 100 On the frame 202; or, the first end and the second end of each single battery 100 are respectively fixed on the first frame 201 or the second frame 202 by welding; or, the first end of each single battery 100 and The second end is respectively fixed on the first frame 201 or the second frame 202 by dispensing glue.
- the containment device 200 composed of multiple containment areas may have any appropriate structure and shape.
- the multiple containment areas include a central area 221 and two opposite sides of the central area 221.
- the distance between the first frame 201 and the second frame 202 in the two side areas 222 and the central area 221 is greater than the distance between the first frame 201 and the second frame 202 in the two side areas 222, so that the plurality of receiving areas are formed Cross-shaped structure.
- the central area 221 can be located between the front wheels (including the front left wheel and the front right wheel) and the rear wheels (including the rear left wheel and the rear right wheel), so as to utilize the installation space at the bottom of the electric vehicle 800 as much as possible ,
- the area of the accommodating device 200 is enlarged, so that more single batteries 100 can be arranged on the electric vehicle 800, and the endurance of the electric vehicle 800 is improved.
- the distance between the first frame 201 and the second frame 202 of the two side areas 222 located on both sides of the central area 221 may be the same or different, which is not limited in the present disclosure.
- the plurality of receiving areas include a first area and a second area located on one side of the first area, and the distance between the first frame 201 and the second frame 202 of the first area is greater than The distance between the first frame 201 and the second frame 202 of the second area is such that a plurality of receiving areas form a T-shaped structure.
- the second area can extend into the area between the front left wheel and the front right wheel or between the rear left wheel and the rear right wheel, so as to make rational use of the bottom of the electric vehicle 800.
- the installation area between the wheels is to increase the area of the receiving device 200 as much as possible.
- the multiple containing areas may also form a triangle, trapezoid, rhombus, parallelogram, etc., and the specific shape of the multiple containing areas may be set according to the installation space at the bottom of the electric vehicle 800.
- the single cells 100 in different accommodating areas have the same volume, or the same capacity, or the same volume and capacity. the same.
- the single cells 100 are usually connected in series, so that the power battery pack 700 has enough voltage to drive the electric vehicle 800. Because the first frame 201 and the second frame 202 are in different storage areas The distance between the first cell 100 is different, and the distance between the first end and the second end of the first single cell 100 is also different, that is, the shape and size of the cell 100 in different receiving areas are different. Generally, the voltage of each cell 100 is the same.
- each The capacity of the single battery is the same (the capacity is equal to the product of the capacity and the voltage).
- the capacity is proportional to the volume of the single battery 100
- ensuring that the volume of each single battery 100 is the same can also be achieved to ensure that the power of each single battery is the same. Purpose, in this way, it can be ensured that the single cells 100 in different storage areas can be charged to the same state within the same charging time, so as to avoid, for example, that one single battery 100 has been fully charged and another single battery 100 is not fully charged. The situation occurred.
- the single cells 100 are rectangular cells with a rectangular parallelepiped structure and have a length L and a thickness D. And the height H between the length L and the thickness D, each single battery 100 is placed on its side, the length direction of each single battery 100 is the first direction A1, the thickness direction is the second direction A2, and the height direction is In the third direction A3, the height H of the single cells 100 in different accommodating areas is the same, and the ratio of the length L to the thickness D is the reciprocal of each other, so that the ratio of the volume to the capacity of the single cells 100 in different accommodating areas is the same.
- a plurality of receiving areas form a cross shape and the distance between the first frame 201 and the second frame 202 of the two side areas 222 are equal is used as an example.
- the thickness of the single battery 100 in the two side areas 222 is twice the thickness of the single battery 100 in the central area 221, thereby ensuring
- the volume of the single cells 100 in the central area 221 and the single cells 100 in the two side areas 222 are the same, so that they have the same power, ensuring that the single cells 100 in the central area 221 and the single cells in the two side areas 222 There is consistency among 100.
- the accommodating device 200 is a pallet for a vehicle
- the pallet for a vehicle is a separately produced pallet for accommodating and installing the single battery 100.
- the vehicle pallet may be installed on the vehicle body by fasteners, for example, suspended on the chassis of the electric vehicle 800.
- the width of the vehicle body is large, such as 1.2m-2m; the length is longer, such as 2m-5m; for different models, the corresponding vehicle body width and body length are different.
- the larger width and length of the vehicle body make the overall size requirement of the pallet at the bottom of the vehicle body larger; the larger pallet size leads to in the prior art, in addition to the side frame on the pallet, It is also necessary to provide a cross beam 500 inside the tray to provide sufficient support and structural strength for the internal single battery.
- the cross beam 500 is added to the vehicle pallet, the weight and internal space of the entire vehicle pallet are occupied, so that the space that can be effectively used inside the pallet is relatively low; at the same time, due to the existence of the cross beam 500, it is installed to match the cross beam 500. Therefore, multiple battery modules 400 must be arranged in the inner width and length directions of the tray, which is complicated to install and requires more installation structures.
- the module layout and the single cell layout in the prior art cannot provide sufficient structural strength for the battery module 400, and the tray cannot provide enough Bearing capacity.
- both ends of the single battery 100 are supported on the first frame 201 and the second frame 202, or both ends of the single battery 100 are supported and fixed on the first frame 201 and the second frame 202,
- the weight of the single battery 100 will be decomposed on the pallet frame on both sides; on the basis of removing the cross beam 500, the load-bearing capacity of the pallet is effectively improved; at the same time, the single battery 100 itself can also be used as the overall reinforcement of the power battery pack 700
- the structural use improves the overall structural strength of the power battery pack 700.
- the first direction A1 of the single battery 100 may be the width direction of the vehicle, that is, the left and right direction of the vehicle.
- the length of the single battery 100 along the first direction A1 may be 500 mm-1000 mm, so that the length of the single battery 100 can be adapted to the width of the vehicle.
- the length of the unit battery 100 in each accommodating area along the first direction A1 is in the range of 500 mm-1000 mm.
- the above-mentioned containing device 200 can also be directly formed on the electric vehicle 800, that is, the containing device 200 is formed on the electric vehicle 800.
- the receiving device 200 may be formed on the chassis of the electric vehicle 800.
- the accommodating device 200 may be a cavity 300 recessed downward to facilitate the assembly of the single battery 100.
- the accommodating device 200 may be integrally formed with the chassis of the electric vehicle 800 and formed as a cavity 300 recessed downward by the chassis.
- the cavity 300 may include a first side wall 301 and a second side wall 302 that are arranged oppositely.
- the first frame 201 may be electrically driven
- the chassis of the vehicle 800 extends downward
- the second frame 202 can also be obtained from the chassis of the electric vehicle 800 extending downward.
- the first frame 201 is an extension of the first side wall 301 and the first side wall 301 of the cavity 300
- the second frame 202 is an extension of the second side wall 302 and the second side wall 302 of the cavity 300 unit.
- the first end of the single battery 100 can be supported on the extension of the first side wall 301, and the second end of the single battery 100 can be supported on the second side.
- the present disclosure also provides an electric vehicle 800 capable of arranging the single batteries 100 according to the above technical solution.
- the electric vehicle 800 is formed with a cavity 300 having the same characteristics as a separate vehicle tray, thereby constituting the present disclosure.
- the battery containing device 200 is provided.
- the extension part of the first side wall 301 and the extension part of the second side wall 302 may form the bottom 303 of the cavity 300.
- the extension portion of the first side wall 301 is connected to the extension portion of the second side wall 302, so that the cavity 300 is formed as a cavity 300 with a U-shaped groove recessed downward, and a single battery 100 can be supported by the bottom 303 of the cavity 300.
- the extension of the first side wall 301 may be spaced apart from the extension of the second side wall 302 by a certain distance.
- the single battery 100 is perpendicular to the first frame 201 and the second frame 202, and the first end and the second end of the single battery 100 are different from each other.
- the distance between L1 is L1
- the distance between the inner surface of the first frame 201 and the inner surface of the second frame 202 is L2, where the ratio of L1 to L2 satisfies L1/L2 ⁇ 50%.
- the single battery 100 can be used as the beam 500 or the longitudinal beam 600.
- two or more single cells 100 can also be arranged, which can at least fully utilize The effect of the space to accommodate the device 200.
- the ratio of L1 and L2 may satisfy 80% ⁇ L1/L2 ⁇ 97%, so that the first end and the second end of the single cell 100 are as close as possible to the first frame 201 and the second frame.
- the frame 202 is even against the first frame 201 and the second frame 202 to facilitate the distribution and transmission of force through the structure of the single battery 100 itself, and ensure that the single battery 100 can be used to strengthen the structural strength of the receiving device 200
- the transverse beam 500 or the longitudinal beam 600 is used to ensure that the receiving device 200 has sufficient strength to resist external force deformation.
- the plurality of single batteries 100 may have multiple arrangements in the accommodating device 200.
- the plurality of single batteries 100 are arranged differently from the first direction A1.
- the plurality of single cells 100 may be arranged at intervals along the second direction A2, or arranged closely. In this embodiment, they are arranged closely along the second direction A2 perpendicular to the first direction A1 to fully utilize the space.
- the first direction A1 may be perpendicular to the second direction A2, the first direction A1 is the length direction of each single cell 100, and the second direction A2 is the first frame 201 And the length direction of the second frame 202, that is, the thickness direction of each single cell 100.
- the first frame 201 and the second frame 202 are perpendicular to the single cells 100, and both ends in the length direction of each single cell 100 are supported on the first frame 201 and the second frame 202.
- the first frame 201 and the second frame 202 are linear structures, and the second direction A2 is a linear direction.
- the first frame 201 and the second frame 202 may have a curved structure.
- the first direction A1 may also be a circumferential direction, and the corresponding second direction A2 may be a radial direction.
- the power battery pack 700 has multiple layers of the plurality of single cells 100 arranged along the third direction A3.
- the multiple single cells 100 are arranged in multiple layers stacked along the third direction A3, and the multiple single cells 100 in each layer are located between the first frame 201 and the second frame 202.
- the number can be set according to the size of the containing device 200. In this way, as many single cells 100 as possible can be arranged in the limited space of the receiving device 200, thereby improving the volume utilization rate of the receiving device 200 and improving the capacity, voltage and endurance of the power battery pack 700.
- first direction A1 and the second direction A2 may be perpendicular to each other, and the third direction A3 may be perpendicular to the first direction A1 and the second direction A2.
- first direction A1 and the second direction A2 are the front, back, left, and right directions in the horizontal direction
- the third direction A3 is the vertical direction.
- the unit cells 100 in each layer may or may not be connected, which is not limited in the present disclosure.
- the single battery 100 stacked along the third direction A3 may be the single battery 100 whose two ends are matched with the first frame 201 and the second frame 202, or it may be directly placed on the next layer.
- the top of the single battery 100 is not supported or connected with the first frame 201 and the second frame 202 in cooperation.
- the first electrode 101 of the single battery 100 is drawn from the single battery 100 toward the first end of the first frame 201, and the second electrode 102 of the single battery 100
- the single battery 100 is led out toward the second end of the second frame 202.
- the length direction of the single battery 100 may be the current direction inside the single battery 100, that is, the current direction inside the single battery 100 is the first direction A1. In this way, since the current direction is the same as the length direction of the single battery 100, the effective heat dissipation area of the single battery 100 is larger and the heat dissipation efficiency is better.
- the first electrode 101 may be the positive electrode of the single cell 100, and the second electrode 102 may be the negative electrode of the single cell 100; or, the first electrode 101 may be the negative electrode of the single cell 100, and the second electrode 102 may be the single cell 100.
- the positive pole may be the positive electrode of the single cell 100, and the second electrode 102 may be the negative electrode of the single cell 100; or, the first electrode 101 may be the negative electrode of the single cell 100, and the second electrode 102 may be the single cell 100.
- the positive pole may be the positive pole.
- the single battery 100 may have any appropriate structure and shape.
- the single battery 100 is a rectangular battery with a rectangular parallelepiped structure and has a length L, thickness D and height H between the length L and the thickness D, each single battery 100 is placed on its side, the length direction of each single battery 100 is the first direction A1, and the thickness direction is the second direction A2 , The height direction is the third direction A3, and two adjacent single cells 100 are arranged in a large-surface manner.
- the cuboid has a length L in the length direction, a thickness D in the thickness direction perpendicular to the length direction, and a height H in the height direction, the height H being between the length L and the thickness D.
- the single cell 100 has a large surface, a narrow surface, and an end surface.
- the long side of the large surface has the above-mentioned length L, and the short side has the above-mentioned height H;
- the long side of the narrow surface has the above-mentioned length L, and the short side It has the above thickness D;
- the long side of the end surface has the above height H, and the short side has the above thickness D.
- the single battery 100 may also be a cylindrical battery.
- the ratio of the length L to the thickness D of the single battery 100 satisfies 50 ⁇ L/D ⁇ 70. With this ratio, a single battery 100 with a longer length and a thinner thickness can be obtained. In this way, it can be ensured that the length of the single battery 100 extends in the first direction A1 while maintaining an appropriate resistance value, and With higher heat dissipation area and heat dissipation efficiency, the adaptability of various models is good.
- the ratio of the surface area S to the volume V of the single cell 100 satisfies 0.15 ⁇ S/V ⁇ 0.2. Under this ratio, it can be realized by the single battery 100 with longer length and thinner thickness, or by adjusting the size. By controlling the ratio of the surface area S to the volume V of the single battery 100, the single battery can be guaranteed While the length of 100 extends along the first direction A1, it has a sufficient heat dissipation area to ensure the heat dissipation effect of the single battery 100.
- the ratio of the surface area S to the energy E of the single battery 100′ satisfies 250 ⁇ S/E ⁇ 400. At this ratio, a single battery 100 with a longer length and a thinner thickness can still be obtained. Similarly, the ratio can be achieved by the above-mentioned single battery 100 having a longer length and a thinner thickness, or by adjusting other dimensions. By controlling the ratio of the surface area S to the energy E of the single battery 100, it can be ensured that the single battery 100 has a certain energy E, and its surface area S can meet its heat dissipation requirements.
- the above-mentioned single battery 100 may be a square battery with a metal shell, that is, the shell of the single battery 100 is made of a metal material, and the metal has better thermal conductivity, thereby improving the heat dissipation efficiency of the single battery 100 , Optimize the heat dissipation effect.
- the single battery 100 may be a soft-pack battery, which refers to a liquid lithium-ion battery covered with a polymer shell, and the structure is packaged with aluminum-plastic film. In the event of a potential safety hazard, the soft pack battery will swell and crack without exploding, thereby improving the safety performance of the single battery 100.
- the containing device 200 further includes The third frame 203 and the fourth frame 204 are arranged in the first direction A1 and the second direction A2.
- the ends of the first frame 201 and the second frame 202 of the two side areas 222 away from the central area 221 are connected by the third frame 203.
- first frame 201 and the second frame 202 of the side area 222 close to the central area 221 is connected to the first frame 201 and the second frame 202 of the central area 221 through the fourth frame 204, and the single cells in the two side areas 222 100 is arranged between the third frame 203 and the fourth frame 204 along the second direction A2, and the single cells 100 in the central area 221 are arranged between the fourth frame 204 along the second direction A2.
- the first frame 201 and the second frame 202 are perpendicular to and connected to the third frame 203 and the fourth frame 204.
- the accommodating device 200 is a separately produced vehicle tray for accommodating and installing the single battery 100 or the cavity 300 integrally formed with the chassis of the electric vehicle 800, its shape and structure are roughly the same.
- the size relationship between the tray and the single battery 100 can also be used for the cavity 300 and the single battery 100.
- the third frame 203 can apply a force toward the side regions 222 to the single cells 100 disposed adjacent to the third frame 203, and the fourth frame 204 can The single battery 100 arranged on the fourth frame 204 exerts a force toward the center area 221.
- the multiple unit batteries 100 can be attached to each other.
- the third frame 203 and the fourth frame 204 can limit the plurality of single cells 100 in the second direction A2, especially when the single battery 100 is slightly expanded, it can buffer the single battery 100 And to provide the effect of inward pressure to prevent excessive expansion and deformation of the single battery 100.
- the third frame 203 and the fourth frame 204 can effectively limit the expansion of the single battery 100, so that when the single battery 100 is When it fails and expands, there is enough air pressure inside to break through the anti-explosion valve 103 or the flip sheet in the current interrupt device (CID), so as to short-circuit the single battery 100, ensure the safety of the single battery 100, and prevent the single battery 100 explosion.
- CID current interrupt device
- the first end of the single battery 100 facing the first frame 201 is provided with an explosion-proof valve 103
- the first frame 201 is provided with an exhaust channel 220
- the first frame 201 is connected to each single battery 100.
- the corresponding positions of the explosion-proof valve 103 are provided with an air inlet 219, the air inlet 219 is in communication with the exhaust channel 220, and the accommodating device 200 is provided with an exhaust hole communicating with the exhaust channel 220; or, the single battery 100 faces the first
- the second end of the second frame 202 is provided with an explosion-proof valve 103
- the second frame 202 is provided with an exhaust channel 220
- the second frame 202 is provided with an air inlet at a position corresponding to the explosion-proof valve 103 of each single battery 100 219.
- the air inlet 219 communicates with the exhaust channel 220, and the containing device 200 is provided with an exhaust hole communicating with the exhaust channel 220; or, the single battery 100 faces the first end of the first frame 201 and faces the second frame
- the second end of 202 is provided with an explosion-proof valve 103, the first frame 201 and the second frame 202 are both provided with an exhaust channel 220, and the positions on the first frame 201 corresponding to the explosion-proof valve 103 of each single cell 100 are both An air inlet 219 is provided.
- the second frame 202 is also provided with an air inlet 219 at a position corresponding to the explosion-proof valve 103 of each single battery 100.
- the air inlet 219 is in communication with the corresponding exhaust channel 220 to accommodate the device
- An exhaust hole communicating with the exhaust passage 220 is provided on the 200.
- the air inlet 219 may also be formed on the first frame 201 and the first end plate 205 mentioned below, or the air inlet 219 may be formed on the second frame 202 and The second end plate 206 mentioned later, or the first frame 201, the second frame 202, and the first end plate 205 and the second end plate 206 mentioned later are provided with air inlets 219.
- the first frame 201 or the second frame 202 is provided with an air inlet 219 corresponding to the explosion-proof valve 103 of the single battery 100, and the first frame 201 or the second frame 202 is provided with exhaust In the channel 220, when the internal pressure of the single cell 100 increases, the explosion-proof valve 103 is opened, and the flame, smoke or gas inside it will directly enter the exhaust channel 220 in the first frame 201 through the air inlet 219, or enter Exhaust channel 220 in the second frame 202, and exhaust the first frame 201 or the second frame 202 through the exhaust hole, for example, through the exhaust hole to the atmosphere, so that the flame, smoke or gas will not collect Inside the accommodating device 200, the single battery 100 is prevented from being damaged by flames, smoke or gas.
- a plurality of single batteries 100 may also be assembled into at least one battery module 400 before being installed in the receiving device 200.
- the technical effects of the present disclosure can also be achieved through the matching relationship between the external structure of the battery module 400 and the first frame 201 and the second frame 202.
- a first end plate 205 is provided between the first end of at least part of the single battery 100 and the first frame 201
- a second end plate 206 is provided between the second end of at least part of the single battery 100 and the second frame 202 of the plurality of single batteries 100, and the first end of at least part of the single battery 100 is supported by the first end plate 205
- the first end plate 205, the second end plate 206 and at least part of the single battery 100 form a battery module Group 400.
- the first end plate 205 and the second end plate 206 may be one, and the first end plate 205, the second end plate 206, and a plurality of single cells 100 are composed
- the first end and the second end of the single battery 100 can be supported on the first frame 201 and the second frame 202 through the first end plate 205 and the second end plate 206, or fixed to the first frame On the frame 201 and the second frame 202.
- the multiple first end plates 205, second end plates 206, and single cells 100 form multiple battery modules 400, and each battery module 400 passes The corresponding first end plate 205 and second end plate 206 are supported on the first frame 201 and the second frame 202. In other words, as an embodiment, along the second direction A2 different from the first direction A1, there may be at least two battery modules 400 in each receiving area. In the present disclosure, the number of the first end plate 205 and the second end plate 206, that is, the number of the battery module 400 is not limited.
- a module bottom plate 209 may also be provided under at least part of the plurality of single cells 100, and the module bottom plate 209 is connected to the first end plate 205 and Between the second end plates 206, the module bottom plate 209, the first end plate 205, the second end plate 206 and at least part of the single cells 100 form a battery module 400.
- a module bottom plate 209 is provided under at least part of the plurality of single cells 100 to support the single cells 100, the module bottom plate 209 is connected to the first end plate 205, and the module bottom plate 209 is connected to the second end plate 206;
- the assembly bottom plate 209, the first end plate 205, the second end plate 206 and at least part of a plurality of single cells 100 constitute a battery module 400.
- the module bottom plates 209 of two adjacent battery modules 400 may be connected to each other or integrally formed into a module bottom plate 209.
- the module bottom plates 209 in the multiple accommodating areas are integrally formed into one module bottom plate 209.
- the module bottom plate 209 may be cross-shaped.
- a module top plate 210 may also be provided above at least part of the plurality of single cells 100, and the module top plate 210 is connected between the first end plate 205 and the second end plate 206. In between, the module top plate 210, the module bottom plate 209, the first end plate 205, the second end plate 206 and at least part of the single cells 100 form a battery module 400. In this way, the single battery 100 is located between the module top plate 210 and the module bottom plate 209, and the module top plate 210 and the module bottom plate 209 can prevent the single battery 100 from moving up and down, thereby increasing the stability of the single battery 100. There may be one or more module top plates 210.
- the module top plates 210 of two adjacent battery modules 400 may be connected to each other or integrally formed into one module top plate 210.
- the module top plate 210 in the multiple containing areas is integrally formed into a single module top plate 210.
- the module top plate 210 may have a cross shape.
- a first side plate 207 and a second side plate 208 may be provided between the first end plate 205 and the second end plate 206.
- the end plate 205, the second end plate 206, the first side plate 207, the second side plate 208, the module top plate 210, the module bottom plate 209 and at least part of the single cells 100 form a battery module 400.
- the first side plate 207 in the central area 221 can be close to one of the fourth frames 204, and the second side plate 208 in the central area 221 can be close to the other.
- the first side plate 207 in the two side areas 222 can be close to the third frame 203, and the second side plate 208 in the two side areas 222 can be close to the fourth frame 204, that is, the first side plate 207 in the central area 221
- the side plate 207 may be adjacent to the second side plate 208 of the two side areas 222.
- the first side plate 207 and the second side plate 208 can be supported on the first frame 201 and the second frame 202, or fixed on the first frame 201 and the second frame 202, or can be fixed on the module bottom plate 209.
- a module bottom plate 209 is provided under at least part of the single cells 100 of the plurality of single cells 100, and at least part of the single cells is supported on the first through the module bottom plate 209.
- the module bottom plate 209 and at least part of the single cells 100 form a battery module 400.
- the module bottom plate 209 is mainly used to cover the bottom of the single battery 100.
- the bottom of the single battery 100 can be in contact with the module bottom plate 209, or can be spaced apart from the module bottom plate 209, so that the An insulation layer 215 or an insulation layer is arranged between the batteries 100.
- a plurality of single cells 100 are supported on the first frame 201 and the second frame 202 through the module bottom plate 209, which simplifies the structure of the battery module 400 and facilitates the reduction in weight of the power battery pack 700.
- the first end plate 205 and the second end plate 206, or the module bottom plate 209 can be supported on the first frame 201 and the second frame 202 in a variety of embodiments, which is not limited in the present disclosure.
- it can be detachably fastened to the first frame 201 and the second frame 202 by fasteners; or it can be fixed to the first frame 201 and the second frame 202 by welding; or it can be connected to the first frame by dispensing glue.
- 201 and the second frame 202 are connected; or directly placed on the first frame 201 and the second frame 202, and supported by the first frame 201 and the second frame 202.
- the power battery pack 700 is arranged with multiple battery modules 400 along the third direction A3.
- the battery module 400 stacked along the third direction A3 may be the battery module 400 whose two ends are matched with the first frame 201 and the second frame 202, or may be directly placed on the next layer. The top of the battery module 400 is not supported or connected with the first frame 201 and the second frame 202 in cooperation.
- the accommodating device 200 is a separately produced vehicle tray for accommodating and installing the single battery 100 or the cavity 300 integrally formed with the chassis of the electric vehicle 800, its shape and structure are roughly the same.
- the aforementioned structures in which the first end plate 205, the second end plate 206, the first side plate 207, and the second side plate 208 are installed in the vehicle pallet are also applicable to the cavity 300.
- a heat insulation layer 215 may be provided between the module bottom plate 209 and the single cells 100 to It isolates the heat transfer between the single battery 100 and the outside, realizes the function of heat preservation of the single battery 100, and avoids thermal interference between the external environment outside the accommodating device 200 and the single battery 100 in the accommodating device 200.
- the heat insulation layer 215 may be made of materials with heat insulation and heat preservation functions, for example, made of heat preservation cotton.
- a heat conducting plate 216 may be arranged between the module top plate 210 and the single battery 100 to facilitate the heat dissipation of the single battery 100 and ensure that multiple single batteries The temperature difference between 100 will not be too large.
- the thermal conductive plate 216 may be made of a material with good thermal conductivity.
- the thermal conductive plate 216 may be made of a material such as copper or aluminum with high thermal conductivity.
- the above-mentioned module top plate 210 is a liquid-cooled plate 217 with a cooling structure arranged inside, and a cooling liquid is arranged inside the liquid-cooled plate 217, so that the cooling liquid is used to cool the single battery 100, so that the single The body battery 100 can be at a suitable operating temperature. Since the heat conduction plate 216 is arranged between the liquid cooling plate 217 and the single cell 100, when the cell 100 is cooled by the cooling liquid, the temperature difference at each position of the liquid cooling plate 217 can be balanced by the heat conduction plate 216, thereby The temperature difference between the plurality of single cells 100 is controlled within 1°C.
- a gas-liquid separator can be installed upstream of the liquid cooling plate 217. Since the cooling liquid in the liquid cooling plate 217 may come from other heat management circuits of the vehicle, the cooling liquid may be a mixture of gas and liquid. After the gas-liquid mixed cooling liquid passes through the gas-liquid separator for gas-liquid separation, it can be ensured that the pure liquid-phase cooling liquid enters the liquid-cooling plate 217 to cool the single battery 100 and ensure the cooling effect.
- the cooling of the single cell 100 can also be cooled by a refrigerant.
- the module top plate 210 is a direct cooling plate 218 with a cooling structure inside, and the direct cooling plate 218 is provided with a refrigerant.
- the refrigerant may be The low-temperature refrigerant can effectively absorb the heat of the single battery 100 through the cooling medium that has been radiated and cooled by the vehicle air conditioning system, so that the temperature of the single battery 100 is always maintained at an appropriate temperature value.
- the first frame 201 is provided with a first supporting step 211
- the second frame 202 is provided with a second supporting step 212; the first end of each single cell 100 is supported on the corresponding On the first supporting step 211, the second end of each single cell 100 is supported on the corresponding second supporting step 212.
- the first support step 211 may protrude inward from the bottom of the first frame 201
- the second support step 212 may protrude inward from the bottom of the second frame 202.
- the step 212 to support the single battery 100 can simplify the structure of the receiving device 200 provided in the present disclosure and reduce the weight of the receiving device 200.
- an insulating plate may be provided on the first support step 211 and the second support step 212, and the insulating plate is located between the single battery 100 and the first support step 211 and the second support step 212.
- the first frame 201 is further provided with a first fixing portion 213, and the second frame 202 is further provided with a second fixing portion 214, and the first end of each single battery 100 is fixed to the first fixing portion 213. Above, the second end of each single battery 100 is fixed to the second fixing portion 214.
- the first fixing portion 213 may be a third supporting step provided on the first frame 201, the third supporting step is located above the first supporting step 211, and the second fixing portion 214 may be The fourth supporting step provided on the second frame 202 is located above the second supporting step 212.
- the first end and the second end of the battery may be fixed to the first fixing part 213 and the second fixing part 214 by fasteners; or welded to the first fixing part 213 and the second fixing part 214.
- the battery module 400 is installed in the electrical storage device 200, and the battery module 400 includes a first end plate 205 disposed adjacent to the first frame 201 and a second end plate disposed adjacent to the second frame 202
- the bottom of the first end plate 205 can be supported on the first supporting step 211, and the top or side wall of the first end plate 205 can be fixed on the first fixing part 213; the second end plate 206
- the bottom of the second end plate 206 can be supported on the second supporting step 212, and the top or side wall of the second end plate 206 can be fixed on the second fixing portion 214.
- the first direction A1 mentioned above may be the width direction of the vehicle body, that is, the left and right direction of the vehicle
- the second direction A2 may be the length direction of the vehicle body, that is, the front-rear direction of the vehicle.
- the single battery 100 since the single battery 100 extends in the first direction A1, the single battery 100 functions as a lateral reinforcement beam in the receiving device 200.
- the first direction A1 mentioned above may be the length direction of the vehicle body, that is, the front and rear direction of the vehicle, and the second direction A2 may be the width direction of the vehicle body, that is, the vehicle body In this way, since the single battery 100 extends in the first direction A1, the single battery 100 functions as a longitudinal reinforcement beam in the receiving device 200.
- an energy storage device 900 is provided, and the energy storage device 900 includes the aforementioned power battery pack 700.
- the energy storage device 900 can be used not only for passenger cars, but also for commercial vehicles, special vehicles, ships, backup power sources (dps, ups), electric bicycles, electric motorcycles, electric scooters, etc., which require a single battery 100 On the device that provides power to it.
- an electric vehicle 800 is provided.
- the electric vehicle 800 includes the above-mentioned power battery pack 700.
- the electric vehicle 800 is formed with at least one of the above-mentioned receiving device 200200, and the receiving device 200200 is integrally formed in The aforementioned cavity 300300 on the electric vehicle 800.
- an electric vehicle 800 is provided, and the electric vehicle 800 includes the aforementioned power battery pack 700.
- the accommodating device 200 in the power battery pack 700 is a separately produced vehicle tray for accommodating and installing the single battery 100.
- the electric vehicle 800 may include a commercial vehicle, a special vehicle, an electric bicycle, an electric motorcycle, an electric scooter, etc., which need to use the power battery pack 700 to provide electric energy for driving the electric vehicle 800.
- the power battery pack 700 is arranged at the bottom of the electric vehicle 800, and the containing device 200 is fixedly connected to the chassis of the electric vehicle 800. Due to the large installation space at the chassis of the electric vehicle 800, arranging the power battery pack 700 at the chassis of the electric vehicle 800 can increase the number of single batteries 100 as much as possible, thereby improving the endurance of the electric vehicle 800.
- the electric vehicle 800 includes a power battery pack 700 arranged at the bottom of the electric vehicle 800, the accommodating device 200 is fixedly connected to the chassis of the electric vehicle 800, and the plurality of single batteries 100 extend in a direction different from the first direction A1.
- the first direction A1 is the width direction of the vehicle body of the electric vehicle 800
- the second direction A2 is the length direction of the vehicle body of the electric vehicle 800.
- the electric vehicle 800 may include a plurality of power battery packs 700 arranged at the bottom of the electric vehicle 800.
- the shapes and sizes of the multiple power battery packs 700 may be the same or different. Specifically, each power The battery pack 700 can be adjusted according to the shape and size of the chassis of the electric vehicle 800.
- the multiple accommodating areas include a central area 221 and two side areas 222 located on opposite sides of the central area 221.
- the distance between the first frame 201 and the second frame 202 of the central area 221 is larger than that of the first side area 222.
- the distance between the frame 201 and the second frame 202 is such that the accommodating area has a cross-shaped structure, and the outer side of the two side areas 222 in the second direction A2 corresponds to the wheel area of the electric vehicle 800.
- the ratio of the width L3 of the central area 221 in the first direction A1 to the width W of the vehicle body satisfies: 50% ⁇ L3/W ⁇ 80%. This ratio can be achieved by setting only one container along the width direction of the vehicle body.
- the device 200 is implemented.
- the body width is 500mm-2000mm, for example, 500mm, 1600mm, 1800mm, 2000mm, and the body length is 500mm-5000mm.
- the width of a passenger car is usually 500mm-1800mm.
- the length of the body is 500mm-4000mm.
- the ratio of the length L4 and the vehicle width W of the unit battery 100 in the first direction A1 in the central area 221 satisfies: 40% ⁇ L4/W ⁇ 70%.
- the thickness of the first frame 201 and the second frame 202 of the receiving device 200 when the ratio of the length L4 of the single battery 100100 in the first direction A1 to the vehicle body width W satisfies: 40% ⁇ L4/W
- only one single battery 100100 can be arranged along the width direction of the vehicle body.
- multiple battery modules 400 or multiple single cells 100 may be arranged in the length direction.
- the length L4 of the single battery 100100 in the first direction A1 is 500 mm-1000 mm.
- both ends of a single cell 100 cooperate with the first frame 201 and the second frame 202
- the single battery 100 cannot be processed to the length we want for some reasons.
- the electric vehicle 800 has requirements for the voltage platform of the single battery 100, and under a fixed material system, to achieve a certain voltage platform, the volume of the single battery 100 required for it is certain; this makes, If the length of the single cell 100 is increased, its thickness or width will be reduced. On the other hand, it is necessary to ensure the surface area of the entire battery to improve the heat dissipation function.
- the width (height) of the single cell 100 is generally not adjusted. Therefore, the length of the single cell 100 along the first direction A1 and the thickness of the second direction A2 can only be changed to change the surface area of the entire single cell 100; therefore, if you want to increase the length, it is likely to reduce the thickness.
- the thickness change has a minimum limit value; this makes the length of the single battery 100 affected by the limit value of the thickness.
- the ability to change the length in one direction A1 is also limited, and the length of the single cell 100 cannot be increased indefinitely.
- the above problem can be solved by arranging two single cells 100 in the first direction A1.
- the length of the single battery 100 along the first direction A1 is 1000mm.
- two single batteries are arranged in the first direction A1.
- the length of each single battery 100 is about 450 mm. The reason why it is less than half of 1000mm is because the installation position needs to be added in the middle.
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Abstract
Description
Claims (47)
- 一种动力电池包,其特征在于,包括容纳装置(200)和设置在所述容纳装置(200)内的多个单体电池(100),所述容纳装置(200)具有多个容纳区,每个容纳区分别具有沿第一方向(A1)相对设置的第一边框(201)和第二边框(202)、以及设置在所述第一边框(201)和所述第二边框(202)之间的所述单体电池(100),在不同的所述容纳区之间,所述第一边框(201)和第二边框(202)的沿所述第一方向(A1)的间距不同,每个单体电池(100)包括相对的第一端和第二端,至少一个所述单体电池(100)的所述第一端与第二端之间的距离和对应的第一边框(201)和第二边框(202)之间的距离相配合。
- 根据权利要求1所述的力电池包,其特征在于,至少一个所述单体电池(100)的所述第一端支撑在对应的第一边框(201)上,且该单体电池(100)的所述第二端支撑在对应的第二边框(202)上。
- 根据权利要求1或2所述的动力电池包,其特征在于,所述单体电池(100)的长度方向与所述第一边框(201)和第二边框(202)大体垂直,在每个容纳区中,所述单体电池(100)的所述第一端与所述第二端之间的距离为L1,所述第一边框(201)的内表面与所述第二边框(202)的内表面之间的距离为L2,其中满足L1/L2≥50%。
- 根据权利要求1-3中任一项所述的动力电池包,其特征在于,所述多个容纳区包括中心区(221)和位于所述中心区(221)相对两侧的两侧区(222),所述中心区(221)中的第一边框(201)和第二边框(202)的间距大于所述两侧区(222)中的第一边框(201)和第二边框(202)的间距,以使所述多个容纳区构成十字形结构。
- 根据权利要求1-3中任一项所述的动力电池包,其特征在于,所述多个容纳区包括第一区和位于所述第一区一侧的第二区,所述第一区的第一边框(201)和第二边框(202)的间距大于所述第二区的第一边框(201)和第二边框(202)的间距,以使所述多个容纳区构成T形结构。
- 根据权利要求1-5中任一项所述的动力电池包,其特征在于,不同的所述容纳区 中的所述单体电池(100)的体积和容量中的至少一个相同。
- 根据权利要求6所述的动力电池包,其特征在于,所述单体电池(100)为方形电池,并具有长度(L)、厚度(D)和介于所述长度(L)和厚度(D)之间的高度(H),所述单体电池(100)侧立放置,所述单体电池(100)的长度方向为所述第一方向(A1),厚度方向为第二方向(A2),高度方向为第三方向(A3),不同的所述容纳区中的所述单体电池(100)的所述高度(H)相同,所述长度(L)和所述厚度(D)的比值互为倒数。
- 根据权利要求1-7中任一项所述的动力电池包,其特征在于,所述容纳装置(200)为车用托盘。
- 根据权利要求8所述的动力电池包,其特征在于,所述单体电池(100)的长度为500mm-1000mm。
- 根据权利要求1-7中任一项所述的动力电池包,其特征在于,所述容纳装置(200)形成在电动车上。
- 根据权利要求10所述的动力电池包,其特征在于,所述容纳装置(200)为向下凹陷的腔体(300)。
- 根据权利要求11所述的动力电池包,其特征在于,所述腔体(300)包括相对的第一侧壁(301)和第二侧壁(302),所述第一边框(201)为所述腔体(300)的所述第一侧壁(301)及所述第一侧壁(301)的延伸部,所述第二边框(202)为所述腔体(300)的所述第二侧壁(302)及所述第二侧壁(302)的延伸部。
- 根据权利要求12所述的动力电池包,其特征在于,所述第一侧壁(301)的延伸部和所述第二侧壁(302)的延伸部形成所述腔体(300)的底部(303)。
- 根据权利要求3-13中任一项所述的动力电池包,其特征在于,满足80%≤L1/L2 ≤97%。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,所述多个单体电池(100)沿不同于所述第一方向(A1)的第二方向(A2)排布。
- 根据权利要求15所述的动力电池包,其特征在于,所述动力电池包沿第三方向(A3)布置有多层所述多个单体电池(100),每层中的所述多个单体电池(100)均位于所述第一边框(201)和第二边框(202)之间。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,每个单体电池(100)以所述第一方向(A1)为长度方向设置。
- 根据权利要求4-14中任一项所述的动力电池包,其特征在于,所述容纳装置(200)还包括沿不同于所述第一方向(A1)的第二方向(A2)设置的第三边框(203)和第四边框(204),所述两侧区(222)的第一边框(201)和第二边框(202)远离所述中心区(221)的一端通过所述第三边框(203)连接,所述两侧区(222)的第一边框(201)和第二边框(202)靠近所述中心区(221)的一端通过所述第四边框(204)分别与所述中心区(221)的第一边框(201)和第二边框(202)连接,所述两侧区(222)中的单体电池(100)沿第二方向(A2)排布在所述第三边框(203)和第四边框(204)之间,所述中心区(221)中的单体电池(100)沿第二方向(A2)排布在所述第四边框(204)之间。
- 根据权利要求18所述的动力电池包,其特征在于,所述第三边框(203)向邻近所述第三边框(203)设置的所述单体电池(100)施加朝向所述两侧区(222)内的作用力,所述第四边框(204)向邻近所述第四边框(204)设置的所述单体电池(100)施加朝向所述中心区(221)内的作用力。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,每个单体电池(100)的所述第一端固定在对应的第一边框(201)上,每个单体电池(100)的所述第二端固定在对应的第二边框(202)上。
- 根据权利要求1-20中任一项所述的动力电池包,其特征在于,在每个容纳区中, 所述多个单体电池(100)中的至少部分单体电池(100)的第一端与所述第一边框(201)之间设置有第一端板(205),所述多个单体电池(100)中的至少部分单体电池(100)的第二端与所述第二边框(202)之间设置有第二端板(206),所述至少部分单体电池(100)的第一端通过所述第一端板(205)支撑在所述第一边框(201),所述至少部分单体电池(100)的第二端通过所述第二端板(206)支撑在所述第二边框(202);所述第一端板(205)、所述第二端板(206)和所述至少部分单体电池(100)组成电池模组(400)。
- 根据权利要求21所述的动力电池包,其特征在于,在每个容纳区中,所述多个单体电池(100)中至少部分单体电池(100)的下方设置有模组底板(209),所述模组底板(209)连接在所述第一端板(205)和第二端板(206)之间,所述模组底板(209)、所述第一端板(205)、所述第二端板(206)与所述至少部分单体电池(100)组成所述电池模组(400)。
- 根据权利要求22所述的动力电池包,其特征在于,在每个容纳区中,所述多个单体电池(100)中至少部分单体电池(100)的上方设置有模组顶板(210),所述模组顶板(210)连接在所述第一端板(205)和第二端板(206)之间,所述模组顶板(210)、所述模组底板(209)、所述第一端板(205)、所述第二端板(206)与所述至少部分单体电池(100)组成所述电池模组(400)。
- 根据权利要求23所述的动力电池包,其特征在于,在每个容纳区中,所述第一端板(205)和所述第二端板(206)之间设置有相对的第一侧板(207)和第二侧板(208),所述第一端板(205)、第二端板(206)、第一侧板(207)、第二侧板(208)、模组顶板(210)、模组底板(209)和所述至少部分单体电池(100)组成所述电池模组(400)。
- 根据权利要求1-24中任一项所述的动力电池包,其特征在于,在每个容纳区中,所述多个单体电池(100)中至少部分单体电池(100)的下方设置有模组底板(209),所述至少部分单体电通过所述模组底板(209)支撑在所述第一边框(201)和第二边框(202)上;所述模组底板(209)与所述至少部分单体电池(100)组成电池模组(400)。
- 根据权利要求21-25中任一项所述的动力电池包,其特征在于,沿不同于所述 第一方向(A1)的第二方向(A2),每个容纳区中的所述电池模组(400)至少为两个。
- 根据权利要求21-25中任一项所述的动力电池包,其特征在于,所述动力电池包沿第三方向(A3)布置有多层所述电池模组(400)。
- 根据权利要求15或16所述的动力电池包,其特征在于,所述单体电池(100)为长方体结构的方形电池,并具有长度(L)、厚度(D)和介于所述长度(L)和厚度(D)之间的高度(H),每个所述单体电池(100)侧立放置,每个所述单体电池(100)的长度方向为所述第一方向(A1),厚度方向为第二方向(A2),高度方向为第三方向(A3),每个容纳区中的相邻两个所述单体电池(100)通过大面对大面的方式排布。
- 根据权利要求28所述的动力电池包,其特征在于,所述单体电池(100)的长度(L)和厚度(D)的比值满足50≤L/D≤70。
- 根据权利要求28或29所述的动力电池包,其特征在于,所述单体电池(100)的表面积(S)与体积(V)的比值满足0.15≤S/V≤0.2。
- 根据权利要求28-30中任一项所述的动力电池包,其特征在于,所述单体电池(100)的表面积(S)与能量(E)的比值满足250≤S/E≤400。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,在每个容纳区中,所述第一边框(201)设置有第一支撑台阶(211),所述第二边框(202)设置有第二支撑台阶(212);每个单体电池(100)的所述第一端支撑在对应的第一支撑台阶(211)上,每个单体电池(100)的所述第二端支撑在对应的第二支撑台阶(212)上。
- 根据权利要求32所述的动力电池包,其特征在于,所述第一边框(201)设置有第一固定部(213),所述第二边框(202)设置有第二固定部(214);每个单体电池(100)的所述第一端固定在所述第一固定部(213)上,每个单体电池(100)的所述第二端固定在所述第二固定部(214)上。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,所述单体电池 (100)为金属外壳方形电池。
- 根据权利要求22-25中任一项所述的动力电池包,其特征在于,所述模组底板与所述单体电池(100)之间设置有隔热层(215)。
- 根据权利要求23或24所述的动力电池包,其特征在于,所述模组顶板(210)与所述单体电池(100)之间设置有导热板(216)。
- 根据权利要求36所述的动力电池包,其特征在于,所述模组顶板(210)为内部设置有冷却结构的液冷板(217)或直冷板(218)。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,所述单体电池(100)的第一电极(101)由所述单体电池(100)朝向所述第一边框(201)的所述第一端引出,所述单体电池(100)的第二电极(102)由所述单体电池(100)朝向所述第二边框(202)的所述第二端引出。
- 根据权利要求1-14中任一项所述的动力电池包,其特征在于,所述单体电池(100)朝向所述第一边框(201)的所述第一端设置有防爆阀(103),所述第一边框(201)内部设置有排气通道(220),所述第一边框(201)上与每个单体电池(100)的所述防爆阀(103)对应的位置均设置有进气口(219),所述进气口(219)与所述排气通道(220)连通,所述容纳装置(200)上设置有与所述排气通道(220)连通的排气孔;或者,所述单体电池(100)朝向所述第二边框(202)的所述第二端设置有防爆阀(103),所述第二边框(202)内部设置有排气通道(220),所述第二边框(202)上与每个单体电池(100)的所述防爆阀(103)对应的位置均设置有进气口(219),所述进气口(219)与所述排气通道(220)连通,所述容纳装置(200)上设置有与所述排气通道(220)连通的排气孔;或者,所述单体电池(100)朝向所述第一边框(201)的所述第一端和朝向所述第二边框(202)的所述第二端均设置有防爆阀(103),所述第一边框(201)和所述第二边框(202)内部均设置有排气通道(220),所述第一边框(201)上与每个单体电池(100)的所述防爆阀(103)对应的位置均设置有进气口(219),所述第二边框(202) 上与每个单体电池(100)的所述防爆阀(103)对应的位置也均设置有进气口(219),所述进气口(219)与对应的所述排气通道(220)连通,所述容纳装置(200)上设置有与所述排气通道(220)连通的排气孔。
- 根据权利要求15或16所述的动力电池包,其特征在于,所述第一方向(A1)为车身宽度方向,所述第二方向(A2)为车身长度方向;或者,所述第一方向(A1)为车身长度方向,所述第二方向(A2)为车身宽度方向。
- 一种电动车,其特征在于,所述电动车包括权利要求1-40中任一项所述的动力电池包。
- 根据权利要求41所述的电动车,其特征在于,所述动力电池包设置在所述电动车的底部,所述容纳装置(200)与所述电动车的底盘固定连接。
- 根据权利要求41或42所述的电动车,其特征在于,所述电动车包括设置在所述电动车底部的一个动力电池包,所述容纳装置(200)与所述电动车的底盘固定连接,所述多个单体电池(100)沿不同于所述第一方向(A1)的第二方向(A2)排布,所述第一方向(A1)为所述电动车的车身宽度方向,所述第二方向(A2)为所述电动车的车身长度方向。
- 根据权利要求43所述的电动车,其特征在于,所述多个容纳区包括中心区(221)和位于所述中心区(221)相对两侧的两侧区(222),所述中心区(221)的第一边框(201)和第二边框(202)的间距大于所述两侧区(222)的第一边框(201)和第二边框(202)的间距,以使所述容纳区呈十字形结构,所述两侧区(222)沿所述第二方向(A2)的外侧与所述电动车的车轮区域对应。
- 根据权利要求44所述的电动车,其特征在于,所述中心区(221)在所述第一方向(A1)的宽度(L3)与车身宽度(W)的比值满足:50%≤L3/W≤80%。
- 根据权利要求44或45所述的电动车,其特征在于,所述中心区(221)内的单体电池(100)在所述第一方向(A1)上的长度(L4)车身宽度(W)的比值满足:40% ≤L4/W≤70%。
- 一种储能装置,其特征在于,所述储能装置包括权利要求1-40中任意一项所述的动力电池包。
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EP3933955A1 (en) | 2022-01-05 |
EP3933955A4 (en) | 2022-04-27 |
CN110190216B (zh) | 2020-06-19 |
JP2022525014A (ja) | 2022-05-11 |
JP7383721B2 (ja) | 2023-11-20 |
CN110190216A (zh) | 2019-08-30 |
KR20210134972A (ko) | 2021-11-11 |
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