CN217983511U - Novel battery module with optimized structure - Google Patents

Abstract

The utility model relates to a battery module technical field specifically is a novel battery module of configuration optimization, hang the frame reservation position through a plurality of bolt with the module, arrange partial functional unit in battery system in other regions of whole car, the pretightning force is applyed after module end plate piles up with electric core, a plurality of rivet and box riveting are used at the end plate both ends, electric core and module are kept apart with the mica plate for the apron, install insulating gasket on module apron top positive and negative pole hole, tiling one deck PET membrane, the busbar tiling is connected with electric core utmost point post on the PET membrane, with FPC subassembly and busbar welding, tiling one deck PET insulating film on the FPC, both sides busbar department tiling insulating piece and PET membrane are connected, rivet connection is used to module apron and module frame, the liquid cooling board is linked through welding and module frame, the utility model discloses get rid of PACK and alleviate whole car weight of box, space utilization promotes, energy density is higher, reduce product spare part level, reduction in production cost is lower, maintenance cost is lower.

Description

Novel battery module with optimized structure

Technical Field

The utility model relates to a battery module technical field specifically is a novel battery module of configuration optimization.

Background

With the proposition of relevant new energy laws and regulations in China, new energy automobiles which are important measures for relieving energy and environmental pressure are rapidly developed, such as electric coaches, electric buses and other commercial vehicles which are powered by power batteries, and have the advantages of small environmental pollution and long endurance, the new energy automobiles are widely used in daily life of people, but the electric passenger vehicles are developed but are not widely applied, the main reason is that the passenger vehicles have small self-space and compact structure, and the space reserved for installing a battery system is small, so that the reduction of the occupied space of the battery system becomes a hotspot for research of power battery enterprises.

The existing module is small in the number of integrated battery cores and insufficient in available space, so that the energy density of a battery pack cannot be effectively improved; the number of parts and the assembly process are as follows: the number of the previous module parts is too large, the assembly process is complex, and too much manpower and material resources are consumed, so that the production cost of the module is too high; from the point of view of maintenance costs: too much, the production technology complicacy of module spare part in the past, when the module goes wrong, need pull down whole battery package, open the battery package and find out trouble module and change or maintain, the maintenance degree of difficulty is big, cost of maintenance height.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a configuration optimization's novel battery module has saved the installation space of PACK box, has improved space utilization, is convenient for improve energy density.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel battery module of configuration optimization, includes module frame, FPC subassembly, module apron, mica sheet, electric core group, module end plate and liquid cold drawing, electric core group includes that a plurality of installs the electric core in the module frame, the mica sheet is located electric core group with between the module apron, be equipped with a plurality of positive and negative pole holes on the module apron, the module end plate is located electric core group both ends, module end plate both sides with module frame attach, the FPC subassembly install in on the module apron, the liquid cold drawing is located module frame bottom.

Optionally, the utility model relates to an embodiment, the FPC subassembly includes FPC and busbar, the busbar is located FPC width direction both sides and with FPC connects, the busbar with be equipped with the connection piece between the FPC and connect, the busbar still with the cell group utmost point post is connected.

Optionally, the utility model relates to an embodiment, the positive negative pole hole is equipped with insulating gasket, insulating gasket profile modeling positive negative pole hole, and insulating gasket is back style of calligraphy structure, and the insertion portion is buckled into to the inward flange, and the insertion portion size equals with positive negative pole hole size, and insulating gasket is not buckled the part and is laminated with positive negative pole hole upper surface edge after insulating gasket installs, plays limiting displacement.

Optionally, in an embodiment of the present invention, the bus bar is provided with a plurality of bus units, each of the bus units is provided with at least one connecting portion, the connecting portion is a circular groove, a circular hole is formed in the center of the bottom of the groove for connecting with the cell group pole, and two ends of the bus bar are connected to the high voltage connectors.

Optionally, in an embodiment of the present invention, a first PET film is laid on the module cover plate, first avoiding holes corresponding to the connecting portions are formed on both sides of the first PET film in the width direction, and the shape of the first avoiding holes is the same as the planar shape of the connecting portions.

Optionally, in an embodiment of the present invention, a second PET film is laid on the FPC assembly, and second avoiding holes corresponding to the connecting portion and the connecting sheet are formed on two sides of the second PET film in the width direction.

Optionally, in an embodiment of the present invention, the module end plate and the MPP sheet are disposed between the electric core sets, and mainly play a role in heat resistance and insulation.

Optionally, the utility model relates to an embodiment, module frame width direction both sides are equipped with the baffle, the baffle outside is equipped with a plurality of installation departments, the mounting hole has been seted up on the installation department, a plurality of louvre has been seted up to module frame bottom.

Optionally, the utility model discloses an embodiment, a plurality of through-hole has been seted up to the mica sheet, and when electric core thermal runaway, when electric core top relief valve opened, the through-hole position made things convenient for electric core to carry out the pressure release.

Optionally, the utility model relates to an embodiment, module frame bottom internal surface symmetry is provided with protrudingly, and the bottom surface forms the gap in prominent setting messenger's electric core group's bottom surface and the module frame, and gap and louvre intercommunication make things convenient for the circulation of air more smooth, improve the radiating effect.

The utility model has the advantages that

The utility model discloses a novel battery module of configuration optimization compares prior art, has saved the installation space of PACK box to battery module inner space is regular, can place more batteries, has improved space utilization and has also improved energy density, and module frame inner structure is simple and the shape is regular, makes electric core simple to operate, and overall structure has reduced the part level, convenient maintenance, the production of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is an exploded view of embodiment 1 of the present invention;

FIG. 2 is a schematic view of an FPC assembly according to embodiment 1 of the present invention;

fig. 3 is a schematic view of an end plate of the module according to embodiment 1 of the present invention;

FIG. 4 is a schematic view of a module frame according to embodiment 1 of the present invention;

fig. 5 is a schematic view of a liquid cooling plate according to embodiment 1 of the present invention;

fig. 6 is a schematic view of a cover plate of the module according to embodiment 1 of the present invention;

fig. 7 is a schematic view of a cell in embodiment 1 of the present invention;

figure 8 is a complete schematic view of the assembly of embodiment 1 of the present invention

Description of the reference numerals: the module comprises a module frame 1, a mounting part 11, a protrusion 12, a heat dissipation hole 13, a module end plate 2, an avoidance port 21, an MPP sheet 3, an electric core group 4, a positive pole and a negative pole 41, a pressure release valve 42, a mica sheet 5, a module cover plate 6, an insulating gasket 61, a positive pole and a negative pole hole 62, a connecting strip 63, an FPC assembly 7, an FPC71, a wiring terminal 711, a bus bar 72, a connecting part 722, a connecting sheet 73, a temperature sensor 731, a first PET film 74, a first avoidance hole 741, a second PET film 75, a second avoidance hole 751, an insulating sheet 8, a liquid cooling plate 9, an inlet and outlet pipe port 92, a cooling liquid flow channel 91 and a through hole 93.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1

As shown in fig. 1 and 8, the installation space of the PACK box body is saved by the novel battery module with optimized structure, the whole battery module is of a cuboid structure, the shape structure is regular, the battery module is conveniently arranged in the vehicle, and the structure of the battery module comprises a module frame 1, a FPC component 7, a module cover plate 6, a mica sheet 5, a cell group 4, a module end plate 2 and a liquid cooling plate 9.

As shown in fig. 1 and 7, the battery core group 4 includes a plurality of battery cores installed in the module frame 1, in this embodiment, the battery cores adopt square batteries, the positive and negative poles 41 of the battery cores are located on two sides of the top of the battery core, and the pressure release valve 42 is arranged in the middle of the battery cores.

As shown in fig. 1, mica sheet 5 locates the 4 tops of electric core group, and mica sheet 5 is located between electric core group 4 and the module apron 6, and mica sheet 5 width is less than the distance between the 62 inward flange of positive and negative pole hole, prevents to hinder the connection installation of follow-up busbar 72, and when electric core thermal runaway, when electric core top relief valve 42 opened, the through-hole position made things convenient for electric core to carry out the pressure release.

As shown in fig. 1, module apron 6 is installed at 1 top of module frame, width direction's both sides are equipped with a plurality of positive and negative pole holes 62 on the module apron 6, positive and negative pole hole 62 cover is equipped with insulating pad 61, insulating pad 61 profile modeling positive and negative pole hole 62, in this embodiment, positive and negative pole hole 62 is the square structure of fillet transition, insulating pad 61 is back style of calligraphy structure, and the corner position of positive and negative pole hole 62 and insulating pad 61 all adopts the fillet transition, insulating pad 61's inward flange is the portion of inserting of buckling downwards, the portion of inserting size equals with positive and negative pole hole 62 size, insulating pad 61 is not buckled the part and is laminated with positive and negative pole hole 62 upper surface edge after insulating pad 61 installs, play limiting displacement.

As shown in fig. 1 and 2, a first PET film 74 is laid on the upper surface of the module cover plate 6, the first PET film 74 is used for isolating the module cover plate 6 from the FPC assembly 7 and plays a role of insulation, first avoiding holes 741 corresponding to the connecting portions 722 are formed on two sides of the first PET film 74 in the width direction, and the shape of the first avoiding holes 741 is the same as the planar shape of the connecting portions 722.

As shown in fig. 1, 3, module end plate 2 locates 1 length direction's of module frame both ends, module end plate 2 encloses into accommodation space with module frame 1, be used for placing square electric core, module end plate 2 medial surface and module frame 1 inside all do not have the great protruding structure of size, therefore, accommodation space shape is regular, conveniently place electric core, square electric core is in accommodation space, arrange along 1 length direction straight line of module frame, square electric core length equals module frame 1's inside width, module end plate 2's the outside is equipped with the strengthening rib of symmetry, module end plate 2 outside has been seted up and has been kept away a mouthful 21, an installation and the orificial placing of liquid cooling plate 9 business turn over that are used for binding post and high-pressure plug connector, module end plate 2 length direction's both sides face is equipped with a plurality of connecting hole, be used for being connected fixedly with module frame 1.

As shown in fig. 1, an MPP sheet 3 is disposed between the module end plate 2 and the electric core group 4 for isolating the module end plate 2 from the electric core group 4, and the MPP sheet 3 mainly plays a role of heat-resistant insulation, and can be replaced by other heat-resistant insulation materials besides MPP.

As shown in fig. 1 and 2, the FPC assembly 7 is mounted on the module cover 6, the liquid cooling plate 9 is disposed at the bottom of the module frame 1, the FPC assembly 7 includes an FPC71 and a bus bar 72, both ends of the fpc71 in the length direction are connected with connection terminals 711 for connecting to a vehicle, the bus bar 72 is disposed at both sides of the FPC71 in the width direction and connected with the FPC71, a connection piece 73 is disposed between the bus bar 72 and the FPC71 for connection, and the bus bar 72 is further connected with the electric core set 4 by a pole.

As shown in fig. 1 and 2, a second PET film 75 is laid on the upper surface of the FPC71 assembly 7, the second PET film 75 is used for isolating the FPC71 assembly 7 from other external components, and also plays an insulating role, second avoiding holes 751 corresponding to the connection portions 722 and the connection pieces 73 are formed on both sides of the second PET film 75 in the width direction, and insulating sheets 8 are laid on both sides of the second PET film 75 in the width direction corresponding to the connection portions 722.

As shown in fig. 1 and 2, the bus bar 72 is provided with a plurality of bus units, each bus unit is provided with at least one connecting portion 722, the connecting portion 722 is a circular groove, the center of the bottom of the groove is provided with a circular hole to be connected with the pole of the electric core set 4, two ends of the bus bar 72 are connected with high-voltage connectors 721, the negative bus bar 72 and the positive bus bar 72 are both provided with temperature sensors 731, the temperature sensors 731 and the connecting pieces 73 have the same size, the temperature sensors 731 of the negative bus bar 72 are arranged at the connecting pieces 73 of the bus units at one end, and the temperature sensors 731 of the positive bus bar 72 are arranged at the connecting pieces 73 of the middle bus unit.

As shown in fig. 1, 4 and 8, two sides of the module frame 1 in the width direction are provided with baffles, the height of the baffles is higher than the installation height of the module cover plate 6 and higher than the height of the module end plate 2, the edge of the module cover plate 6 in the width direction is bent upwards to form a connecting strip 63 for connecting the module cover plate 6 with the baffles, the connecting strip 63 is connected with the baffles through screws, two ends of the connecting strip 63 exceed the main length of the module cover plate 6 and are flush with the outer side surface of the module cover plate 6, a plurality of trapezoidal installation parts 11 are arranged on the outer sides of the baffles, installation holes are formed in the installation parts 11 for connecting and fixing the battery modules, and a plurality of heat dissipation holes 13 are formed in the bottom of the module frame 1; the internal surface symmetry of module frame 1 bottom is provided with protruding 12, and in this embodiment, protruding be bar structure, and length equals with module frame 1 length, and the setting up of protruding 12 makes the bottom surface of electric core group 4 and the interior bottom surface of module frame 1 form the gap, and gap and louvre 13 intercommunication make things convenient for the circulation of air more smooth, improve the radiating effect.

As shown in fig. 1 and 5, the liquid cooling plate 9 is installed at the bottom of the module frame 1, a circuitous cooling liquid channel 91 is formed inside the liquid cooling plate 9, the cooling liquid channel 91 is opened to avoid the heat dissipation holes 13 at the bottom of the module frame 1, and the part not provided with the cooling liquid channel 91 is opened with through holes 93 corresponding to the heat dissipation holes 13 at the bottom of the module frame 1, so as to facilitate heat dissipation, and an inlet and outlet pipe port 92 for the inlet and outlet of the cooling liquid is formed at one end of the liquid cooling plate 9.

Assembly description:

firstly, put electric core in module frame 1, after the electric core was put well, put into MPP piece 3, install module end plate 2 in 4 both ends of electric core group again, rivet with module frame 1 with a plurality of phi 5 rivet.

Then, the insulating gasket 61 is installed on the positive and negative pole holes 62 reserved above the module cover plate 6 through insulating glue, the first PET film 74 is tiled, the bus bar 72 is tiled on the PET film and connected with the positive and negative poles of the battery core in a laser welding mode, the FPC71 is welded with the bus bar 72, the connection is completed through the connecting piece 73, the second PET film 75 is tiled on the FPC71 assembly 7, and the insulating sheets 8 are tiled at the bus bars 72 on the two sides and connected with the second PET film 75 through the insulating glue.

And finally, the liquid cooling plates 9 are coated with heat conducting glue and then connected together in a fiber welding mode to assemble a battery module.

A plurality of battery module passes through a plurality of M10 bolt and installs on the position that the chassis was reserved, forms driving system through establishing ties, provides power for whole car.

Example 2

In the present embodiment, the structure is basically the same as that of embodiment 1, except that the bus bars 72 of the same polarity are integrated, and are not divided into a plurality of bus units.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments using the above disclosed technical content without departing from the technical scope of the present invention, but all modifications, changes and modifications of the above embodiments, which are introduced and changed equivalently, by the technical spirit of the present invention, still belong to the technical scope of the present invention.

Claims (10)

1. The utility model provides a novel battery module of configuration optimization which characterized in that: including module frame, FPC subassembly, module apron, mica sheet, electric core group, module end plate and liquid cooling board, electric core group includes that a plurality of installs the electric core in the module frame, the mica sheet is located electric core group with between the module apron, be equipped with a plurality of positive and negative pole holes on the module apron, the module end plate is located electric core group both ends, module end plate both sides with module frame attach, the FPC unit mount in on the module apron, liquid cooling board install in module frame bottom.

2. The structurally optimized novel battery module as claimed in claim 1, wherein: the FPC assembly comprises an FPC and a bus bar, the bus bar is arranged on two sides of the width direction of the FPC and connected with the FPC, and the bus bar is further connected with the electric core assembly pole.

3. The structurally optimized novel battery module as claimed in claim 1, wherein: and the positive and negative electrode holes are provided with insulating gaskets.

4. The structurally optimized novel battery module as claimed in claim 2, wherein: the busbar is equipped with a plurality of unit that converges, every the unit that converges all is equipped with at least one connecting portion.

5. The structurally optimized novel battery module as claimed in claim 1, wherein: a first PET membrane is laid on the module cover plate.

6. The structurally optimized novel battery module as claimed in claim 2, wherein: a second PET film is laid on the FPC, a plurality of round holes are formed in two sides of the width direction of the second PET film, and insulating sheets are laid at the positions of the round holes.

7. The structurally optimized novel battery module as claimed in claim 1, wherein: and an MPP sheet is arranged between the module end plate and the electric core group.

8. The structurally optimized novel battery module as claimed in claim 1, wherein: the module frame is characterized in that baffles are arranged on two sides of the width direction of the module frame, a plurality of installation parts are arranged on the outer sides of the baffles, installation holes are formed in the installation parts, and a plurality of heat dissipation holes are formed in the bottom of the module frame.

9. The structurally optimized novel battery module as claimed in claim 1, wherein: the mica sheet is provided with a plurality of through holes.

10. The structurally optimized novel battery module as claimed in claim 1, wherein: the inner surface of the bottom of the module frame is symmetrically provided with protrusions.

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