阅读说明：本技术 一种电池模组及电动装置 (Battery module and electric device ) 是由 邓武星 赵孟 盛力 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种电池模组及采用该电池模组的电动装置,所述电池模组包括模组外壳,所述模组外壳包括底板、上盖、侧板和端板,所述底板、上盖、侧板和端板一起构成所述模组外壳的内部空间,所述电芯置于所述模组外壳的内部；其中,所述底板中设置有贯通所述底板两端的流道。本发明通过将现有技术中的水冷系统集成设置于所述模组外壳的底板中,一方面使电池模组内热交换、热传递的效率得到提升,另一方面使非储能部件在空间和重量上得到压缩,从而使电池模组的能量密度得到提升。(The invention discloses a battery module and an electric device adopting the same, wherein the battery module comprises a module shell, the module shell comprises a bottom plate, an upper cover, a side plate and an end plate, the bottom plate, the upper cover, the side plate and the end plate form the inner space of the module shell together, and a battery core is arranged in the module shell; and a flow channel penetrating through two ends of the bottom plate is arranged in the bottom plate. According to the invention, the water cooling system in the prior art is integrated and arranged in the bottom plate of the module shell, so that the heat exchange and heat transfer efficiency of the battery module is improved on one hand, and the non-energy storage components are compressed in space and weight on the other hand, so that the energy density of the battery module is improved.)

1. A battery module, comprising:

The battery core is provided with a battery core,

the cylindrical module shell comprises a cylindrical side wall and two end plates;

and at least part of the surface of the cylindrical side wall is provided with a flow channel which runs through the two ends of the cylindrical side wall, and the flow channel is a through cavity.

2. The battery module according to claim 1, wherein the flow channel has a radial height of between one half and two thirds of the thickness of the face, and the center of the cross section of the flow channel is located at a greater distance from the outer face of the cylindrical module housing than from the inner face of the cylindrical module housing.

3. The battery module according to claim 2, wherein: the cross section of the lateral wall of tube-shape is the rectangle, the lateral wall of tube-shape includes roof and lower casing, the casing includes both sides curb plate and lower casing bottom plate down, the runner set up in the roof or in the casing bottom plate down, roof and casing are aluminum alloy extrusion's an organic whole structure down.

4. the battery module according to claim 2, wherein: the cross section of the side wall of tube-shape is the rectangle, the side wall of tube-shape includes bottom plate and last casing, it includes both sides curb plate and last casing roof to go up the casing, the runner set up in the bottom plate or in going up the casing roof, bottom plate and last casing are aluminum alloy extrusion's an organic whole structure.

5. The battery module according to claim 2, wherein: the cross section of the cylindrical side wall is polygonal or circular, and the flow passages are uniformly or variably arranged in at least one surface of the cylindrical side wall or in the whole cylindrical side wall.

6. The battery module according to claim 1, 2, 3, 4 or 5, wherein the flow channel is provided at both ends thereof with blocking plates on which fluid inlet/outlet connectors are provided.

7. The battery module according to claim 1, 2, 3, 4 or 5, wherein the flow channel has a rectangular, circular or wavy cross section, and the flow channel is provided in plurality.

8. The battery module according to claim 1, 2, 3, 4 or 5, wherein the battery core comprises a plurality of battery cores, the battery cores are connected by adhesives and the cylindrical module shell is connected by adhesives, an insulating separator is arranged between each battery core and the corresponding end plate, an aerogel paper felt is arranged between each battery core and each battery core, and the thickness of the aerogel paper felt is 0.2-0.5 mm; between the lateral wall of tube-shape and both ends end plate, inside is the viscose sealed, and the outside is the laser sewing welding.

9. The battery module according to claim 1, 2, 3, 4 or 5, wherein the end plates at both ends are cast aluminum alloy end plates, and have consistent structures and corresponding positions on which high-pressure socket mounting holes, low-pressure socket/relief valve mounting holes and hoisting clamping portions are provided, wherein the high-pressure socket mounting holes of at least one end plate in the end plates at both ends are provided with high-pressure sockets, the low-pressure socket/relief valve mounting holes are respectively provided with low-pressure sockets or relief valves, the low-pressure socket/relief valve mounting holes are connected with the low-pressure sockets or relief valves through buckles, and the mounting surfaces of the low-pressure sockets and the relief valves are provided with sealing rings.

10. An electric device, characterized in that the battery module according to any one of claims 1 to 9 is used in the electric device.

Technical Field

The invention relates to the technical field of batteries, in particular to a battery module and an electric device adopting the battery module.

Background

As a core component of an electric vehicle, the performance of a battery pack directly affects the quality of the electric vehicle. Because the charging and discharging of the battery pack have the optimal temperature range, the service life and the use effect of the battery pack can be directly influenced by over-high or over-low temperature.

At present, the liquid cooling mode is the most common temperature control mode of the battery pack in the prior art. The prior art lays the water-cooling board in the bottom of battery module usually, and wherein the battery module includes electric core group and the module frame that is located electric core group below to lay the heat-conducting glue between electric core group and module frame, the water-cooling board is then including the heat-conducting glue that arranges in proper order from top to bottom, water-cooling board bottom plate and water-cooling board apron.

Disclosure of Invention

In view of the deficiencies of the prior art, the present invention provides a battery module, which improves the structure of the battery module to improve the efficiency of heat exchange and heat transfer in the battery module, and to improve the energy density of the battery module.

The technical scheme for solving the technical problems is as follows:

according to an aspect of an embodiment of the present invention, a battery module includes:

The battery core is provided with a battery core,

the cylindrical module shell comprises a cylindrical side wall and two end plates;

and at least part of the surface of the cylindrical side wall is provided with a flow channel which runs through the two ends of the cylindrical side wall, and the flow channel is a through cavity.

The beneficial effects of this embodiment lie in, through with the water-cooling board integration among the prior art set up in the lateral wall of the tube-shape of tube-shape module casing, on the one hand make the efficiency of heat exchange, heat transfer in the battery module obtain promoting, on the other hand make the non-energy storage component of battery module on space and weight account for the ratio obtains compressing to make the energy density of battery module obtain promoting.

Further, the radial height of the flow channel is between one half and two thirds of the thickness of the surface where the flow channel is located, and the distance from the center of the cross section of the flow channel to the outer surface of the cylindrical module shell is larger than the distance from the center of the cross section of the flow channel to the inner surface of the module shell.

the embodiment has the advantages that the radial height of the flow channel is controlled between one half to two thirds of the thickness of the surface where the flow channel is located, so that the firmness of the module shell can be ensured, and the heat exchange efficiency in the battery module can be ensured; by making the side wall of the runner lean on the distance outside the cylindrical module housing is greater than the side wall of the runner lean on the distance inside the module housing, the firmness and the heat exchange efficiency of the cylindrical module housing are improved while being obtained.

Further, the cross section of the lateral wall of tube-shape is the rectangle, the lateral wall of tube-shape includes roof and lower casing, the casing includes both sides curb plate and lower casing bottom plate down, the runner set up in the roof or in the lower casing bottom plate, roof and lower casing are aluminum alloy extrusion's an organic whole structure.

furthermore, the cross section of the side wall of tube-shape is the rectangle, the side wall of tube-shape includes bottom plate and last casing, it includes both sides curb plate and last casing roof to go up the casing, the runner set up in the bottom plate or in going up the casing roof, bottom plate and last casing are aluminum alloy extrusion's an organic whole structure.

Further, the cross section of the cylindrical side wall is polygonal or circular, and the flow passages are uniformly or variably arranged in at least one surface of the cylindrical side wall or in the whole cylindrical side wall.

The above embodiment has an advantageous effect in that the number of components of the module case is reduced by forming the upper case or the lower case of the integrated structure of the side plates at both sides and the top plate or the bottom plate, and the integrated structure of the lower case, the upper case, the bottom plate or the top plate is realized by the prior art process of aluminum alloy extrusion molding, so that the module case can be improved in weight, sealability and robustness. Further, the cylindrical side wall is designed to be an integral structure, and after the shape of the battery cell is properly changed, the effect can be further enhanced. The runner is designed into a straight-through cavity, so that the aluminum alloy extrusion forming process is convenient to realize. It is conceivable that the lower case and the upper case are not integrally formed, but the bottom plate, the side plate, and the top plate are respectively connected together by welding or riveting. The cylindrical module housing is not limited to be rectangular, the cross section of the cylindrical module housing may also be polygonal or circular according to the shape requirement of the battery core, and if the cylindrical module housing is circular, the entire cylindrical side wall may be provided with a flow channel penetrating through two ends of the cylindrical side wall, and the scope of the invention is not limited thereto.

Furthermore, both ends of the flow channel are provided with blocking plates, and the blocking plates are provided with fluid inlet/outlet connectors.

The fluid inlet/outlet joint and the blocking plate can be of an integral structure or can be connected in a bolt mode; the closure plate may be a unitary body or may be divided into a plurality of segments, with or without fluid inlet/outlet connections, and the scope of the invention is not limited in this respect.

The embodiment has the advantages that the blocking plates with the fluid inlet/outlet connectors are arranged at the two ends of the bottom plate, so that the flow passages integrated in the bottom plate are easier to be managed in a unified manner, and the fluid inlet/outlet connectors and the blocking plates are integrated into a whole to be easier to realize the sealing performance of the blocking plates.

furthermore, the battery cell comprises a plurality of battery cells, the battery cells and the cylindrical module shell are all connected by gluing, an insulating partition plate is arranged between the battery cell and the end plate, an aerogel paper felt is arranged between the battery cell and the battery cell, and the thickness of the aerogel paper felt is 0.2-0.5 mm; between the lateral wall of tube-shape and both ends end plate, inside is the viscose sealed, and the outside is the laser sewing welding.

The beneficial effect of the embodiment lies in that through adhesive bonding to and through setting up insulating barrier and aerogel paper felt, make electric core realize in the module casing under stable, insulating circumstances, further lightened battery module's weight, promoted battery module's energy density. Between the cylindrical side wall and the end plates at the two ends, the inside of the cylindrical side wall is sealed by adopting viscose glue, so that the whole sealing performance of the module is better, and the battery module achieves higher protection level; and laser sewing welding is adopted outside, so that the weld penetration is increased, and the welding reliability is improved.

further, both ends end plate is the casting aluminum alloy end plate, all is equipped with high-pressure socket mounting hole, low pressure socket decompression valve mounting hole and hoist and mount clamping part on the unanimous and corresponding position of structure, the high-pressure socket mounting hole that has one end plate at least in the end plate of both ends installs high-pressure socket, low pressure socket or decompression valve are installed respectively to low pressure socket decompression valve mounting hole, low pressure socket decompression valve mounting hole with low pressure socket or decompression valve pass through the buckle and connect, the installation face of low pressure socket and decompression valve is provided with the sealing washer.

The beneficial effects of the above embodiment are that both ends end plate all adopts the aluminum alloy casting, and for corresponding uniformity design, has reduced the manufacturing cost of end plate. On the premise of ensuring the rigidity of the module shell, the weight of the module shell can be reduced, and the end plates and the cylindrical side wall have better consistency in welding; the installation of the low-voltage socket/pressure release valve is more convenient by adopting the buckle connection, and the protection performance of the battery module is better ensured by arranging the sealing ring on the installation surface.

According to another aspect of the embodiment of the invention, an electric device adopts the battery module according to any one of the above embodiments or embodiments.

The beneficial effect of this embodiment lies in, through adopting the battery module that heat exchange efficiency is better, energy density is higher, under the circumstances of guaranteeing that the driving system of electric actuator, especially trolley-bus stabilizes the output, makes the electric motor car that adopts same weight and volume battery module can travel longer distance.

Drawings

Fig. 1 is a schematic view illustrating a disassembled structure of a battery module according to the present invention;

Fig. 2 is a schematic cross-sectional view of a first embodiment of a battery module according to the present invention;

fig. 3 is a schematic cross-sectional view of a second embodiment of a battery module according to the present invention;

Fig. 4 is a schematic cross-sectional view of a third embodiment of a battery module according to the present invention;

Fig. 5 is a schematic cross-sectional view of a fourth embodiment of a battery module according to the present invention;

Fig. 6 is a schematic cross-sectional view of a fifth embodiment of a battery module according to the present invention;

fig. 7 is a schematic view of an end plate structure of the battery module according to the present invention;

Fig. 8 is a schematic structural view of a plug with a connector of the battery module according to the present invention;

Fig. 9 is a schematic structural view of a straight blocking plate of the battery module according to the present invention;

in the figure:

100. The lower shell 101, a bottom plate of the lower shell 1011, a bottom plate flow channel of the lower shell 102 and a side plate;

200. an upper housing 201, an upper housing top plate 2011, an upper housing top plate flow channel;

300', 300, a top plate, 301 and a top plate flow passage;

400', 400, a bottom plate, 401 and a bottom plate flow channel;

500. A plugging plate with joint 501, a fluid inlet/outlet joint;

600. A straight plugging plate;

700. The device comprises an end plate, 701, a low-voltage socket/pressure relief valve mounting hole, 7011, a low-voltage socket, 7012, a pressure relief valve, 702, a high-voltage socket mounting hole, 7021, a high-voltage socket, 703 and a hoisting clamping part;

800. insulating partition, 801, aerogel paper felt, 802, structural adhesive insulating layer, 803 and heat-conducting structural adhesive;

900. The battery cell comprises a battery cell 901, a high-voltage output electrode plate and a 902 high-voltage electric connecting piece;

1000. A cylindrical side wall, 10001, a cylindrical side wall flow passage.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.