CN217655950U - Battery core, battery module and vehicle - Google Patents
Battery core, battery module and vehicle Download PDFInfo
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- CN217655950U CN217655950U CN202220471175.0U CN202220471175U CN217655950U CN 217655950 U CN217655950 U CN 217655950U CN 202220471175 U CN202220471175 U CN 202220471175U CN 217655950 U CN217655950 U CN 217655950U
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Abstract
The disclosure relates to a battery core, a battery module and a vehicle. The battery cell comprises a battery cell body and a battery cell shell; the inner cavity of the battery cell shell is provided with a battery cell body; the battery cell shell comprises a liquid inlet and a liquid outlet, and a liquid cooling pipeline is arranged in the battery cell shell; the liquid cooling pipeline communicates the liquid inlet with the liquid outlet. This disclosed technical scheme sets up the liquid cooling pipeline through the inner chamber at electric core shell and dispels the heat to electric core, has not only improved the radiating efficiency of electric core, still makes the temperature of each part of electric core more even.
Description
Technical Field
The utility model relates to the technical field of automobiles, especially, relate to a battery cell, battery module and vehicle.
Background
When designing a new energy power battery, factors such as maintenance cost, heat dissipation, safety and the like are considered, and a battery with large capacity is formed by connecting a plurality of battery cores. As the battery is charged and discharged continuously, the difference between the cells becomes larger gradually. For example, the internal resistance of a partially aged cell may become larger, thereby increasing the amount of heat generated from the cell, resulting in an increase in the cell temperature. And with the rapid development of electric vehicles, the thermal management problem of the power battery is more and more prominent, and when the battery is discharged at a large current and runs at a high temperature, the heat accumulation easily causes dangers such as combustion and explosion.
And the battery module is as the most central spare part and the power source among the electric automobile, and every battery module comprises several to ten unequal electric cores, and when the battery module during operation, the electric core temperature can sharply rise, so adopt suitable heat dissipation mode vital importance. For the market development, no matter how promising the technology, "fast heat dissipation" is the most critical and basic requirement of the battery module, and the heat dissipation of the battery module is a crucial part of the safety of the whole vehicle.
However, the conventional heat dissipation method of the battery module mainly dissipates heat from the bottom or the side of the battery module, specifically, transfers heat of the battery cell to the housing of the battery module through the heat-conducting glue for heat dissipation. But dispel the heat through the heat conduction glue, the heat conduction area is little, and is limited to electric core heat transfer effect, leads to the radiating efficiency of electric core lower, and this radiating mode causes the inhomogeneous phenomenon of each part temperature of electric core easily simultaneously.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the present disclosure provides an electric core, a battery module and a vehicle.
The present disclosure provides a battery cell, including a battery cell body and a battery cell casing;
the inner cavity of the battery cell shell is provided with a battery cell body; the battery cell shell comprises a liquid inlet and a liquid outlet, and a liquid cooling pipeline is arranged in the battery cell shell; the liquid cooling pipeline communicates the liquid inlet with the liquid outlet.
In some embodiments, the liquid cooling conduits are distributed in a serpentine shape.
In some embodiments, the cell casing comprises a bottom casing, a top casing, a first sidewall casing, a second sidewall casing, a third sidewall casing, and a fourth sidewall casing; the bottom casing, the top casing, the first sidewall casing, the second sidewall casing, the third sidewall casing, and the fourth sidewall casing surround an inner cavity forming the cell casing; the first sidewall housing is opposite the second sidewall housing; the third sidewall housing and the fourth sidewall housing are opposite;
the liquid cooling pipelines comprise a first liquid cooling pipeline and a second liquid cooling pipeline; the first liquid cooling pipelines are distributed in the first side wall shell, the second side wall shell and the bottom shell; the second liquid cooling pipeline is distributed on the third side wall shell and the fourth side wall shell.
In some embodiments, the liquid cooling conduits include a third liquid cooling conduit and a fourth liquid cooling conduit; the flow directions of the cooling liquid in the third liquid cooling pipeline and the fourth liquid cooling pipeline are opposite;
the liquid inlet comprises a first liquid inlet and a second liquid inlet; the liquid outlets comprise a first liquid outlet and a second liquid outlet; said third liquid cooling conduit communicating said first liquid inlet with said first liquid outlet; the fourth liquid cooling conduit communicates the second liquid inlet with the second liquid outlet.
The present disclosure further provides a battery module, which includes the structure of any one of the above-mentioned battery cells.
In some embodiments, the liquid outlet of one of the two adjacent cells is connected to the liquid inlet of the other cell.
In some embodiments, the battery further comprises a battery shell, wherein a plurality of the battery cells are positioned in an inner cavity of the battery shell;
at least some of the cells have different liquid inlets and/or at least some of the cells have different liquid outlets; a liquid inlet confluence pipeline and a liquid outlet confluence pipeline are also arranged in the battery shell; at least part of the liquid inlets of the battery cells are communicated with the liquid inlet confluence pipeline; and at least part of the liquid outlet of the battery cell is communicated with the liquid outlet confluence pipeline.
In some embodiments, a heat dissipation fan is further included; the battery module further comprises a battery shell, and the plurality of battery cells are positioned in an inner cavity of the battery shell; a heat dissipation air duct is formed between the battery shell and a battery cell series-parallel connection structure formed by a plurality of battery cells; the heat dissipation fan is used for dissipating heat of the plurality of battery cores through the heat dissipation air duct.
In some embodiments, a side surface of the battery case facing the cell series-parallel connection structure is provided with a groove structure and/or a protrusion structure.
The present disclosure also provides a vehicle including the structure of any one of the above battery modules.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the technical scheme, the liquid cooling pipeline is arranged in the inner cavity of the battery cell shell to dissipate heat of the battery cell, so that the heat dissipation efficiency of the battery cell is improved, and the temperature of each part of the battery cell is more uniform.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a battery cell provided in an embodiment of the present disclosure;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A' of FIG. 1;
fig. 3 is a schematic structural diagram of another electrical core provided in an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another electrical core provided in an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another electrical core provided in an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of another battery module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural view of another battery module according to an embodiment of the present disclosure;
fig. 9 is a schematic structural view of another battery module according to an embodiment of the present disclosure;
fig. 10 is a schematic structural view of another battery module according to an embodiment of the present disclosure;
fig. 11 is a schematic structural view of another battery module according to an embodiment of the present disclosure;
fig. 12 is a schematic structural view of another battery module according to an embodiment of the present disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A battery cell provided in an embodiment of the present disclosure, and fig. 2 isbase:Sub>A schematic structural diagram ofbase:Sub>A cross section alongbase:Sub>A linebase:Sub>A-base:Sub>A' in fig. 1. The battery cell is suitable for the thermal management condition of the battery cell with super rapid charging or continuous high-rate discharging capability. As shown in fig. 1 and fig. 2, the battery cell 1 includes a cell body 2 and a cell casing 3. The inner cavity of the battery cell shell 3 is provided with a battery cell body 2. The cell casing 3 includes a liquid inlet 31 and a liquid outlet 32, and a liquid cooling pipe 33 is disposed in the cell casing 3. A liquid cooling pipe 33 communicates the liquid inlet 31 with the liquid outlet 32. Be provided with liquid cooling pipeline 33 in the inner chamber of cell shell 3 promptly, the inlet of this liquid cooling pipeline 33 is liquid inlet 31, and the outlet of this liquid cooling pipeline 33 is liquid outlet 32, and this liquid inlet 31 and liquid outlet 32 all set up on cell shell 3.
According to the technical scheme, the liquid cooling pipeline is arranged in the inner cavity of the battery cell shell to dissipate heat of the battery cell, the heat dissipation efficiency of the liquid cooling pipeline is high, the heat dissipation efficiency of the battery cell is improved through direct contact heat dissipation of the battery cell, and the temperature of each part of the battery cell is even.
As shown in fig. 1 and 2, the battery cell 1 further includes positive and negative electrode sheets 34. The liquid cooling pipe 33 is used for connecting an external liquid cooling mechanism, and the external liquid cooling mechanism inputs cooling liquid into the liquid cooling pipe 33 through the liquid inlet 31, and outputs the cooling liquid to the external liquid cooling mechanism through the liquid outlet 32. The liquid cooling pipeline 33 is internally circulated with cooling liquid, so that a good effect of heat dissipation of the battery cell can be achieved.
In some embodiments, a cooling liquid, such as cooling water or an antifreeze coolant, such as an ethanol, glycol, or glycerol type coolant, is circulated through the liquid cooling conduit.
In some embodiments, the liquid cooling pipe 33 may be disposed at any position of the side, the bottom, and the top of the battery cell, and may be specifically designed according to the structural design requirement of the actual battery cell. Optionally, as shown in fig. 1 and fig. 2, the liquid cooling pipeline 33 may be disposed at the side and the bottom of the battery cell, for example, so as to effectively improve the heat dissipation efficiency of the battery cell, meet the thermal management requirement of the battery in the high-rate charge and discharge process, and prevent the battery cell from being over-heated and affecting the service life of the battery cell, compared with the existing battery cell heat dissipation structure.
In some embodiments, for example, multiple liquid cooling pipes 33 may be disposed in the inner cavity of the cell housing 3, for example, 1, 2, 3, 4, 5, etc. liquid cooling pipes 33 may be disposed, and the specific number of the liquid cooling pipes 33 is set according to the structure of the actual cell and the heat dissipation requirement, which is not limited in the embodiment of the present disclosure. In practice, the more the number of the liquid cooling pipelines 33 is, the larger the heat exchange area between the liquid cooling pipelines 33 and the cell body 2 is, and the more the heat dissipation of the cell body 2 is facilitated.
As shown in fig. 1 and 2, the liquid inlet 31 and the liquid outlet 32 of the liquid cooling pipe 33 may be disposed at the top of the cell casing 2, for example.
In some embodiments, the liquid inlet 31 and the liquid outlet 32 may be disposed at any position of the cell casing 3, and the positions where the liquid inlet 31 and the liquid outlet 32 are disposed on the cell casing 3 are set according to the structural design of the actual battery cell 1, and the positions where the liquid inlet 31 and the liquid outlet 32 are disposed on the cell casing 3 are not limited in the embodiments of the present disclosure.
Fig. 3 is a schematic structural diagram of another battery cell provided in an embodiment of the present disclosure, and as shown in fig. 3, the liquid inlet 31 of the liquid cooling pipeline 33 may be disposed at the top of the battery cell casing 2, for example, and the liquid outlet 32 may be disposed at the bottom of the battery cell casing 2, for example.
The technical scheme that this disclosed embodiment provided, when liquid inlet is located the top of electric core shell, when liquid outlet is located the bottom of electric core shell, can pour into cooling liquid into at electric core shell top, export cooling liquid in electric core shell's bottom, can follow liquid like this from the rule of high toward low flow, make things convenient for circulation and circulation in the liquid cooling pipeline that cooling liquid can be fine.
In some embodiments, the liquid cooling pipe 33 may be, for example, a circular pipe, a rectangular pipe, a serpentine pipe, or the like. As shown in fig. 1 and 2, the liquid cooling pipe 33 is a circular pipe.
In some embodiments, as shown in FIG. 3, the liquid-cooled pipes 33 are distributed in a serpentine shape. According to the technical scheme, the liquid cooling pipelines are distributed in a snake shape, the contact area between the liquid cooling pipelines and the battery core can be further increased, the heat exchange capacity of the battery core in the heat dissipation process is enhanced, and the heat dissipation efficiency of the battery core is effectively improved.
Fig. 3 only shows a structure in which a liquid cooling pipe 33 is provided on a side surface of the cell casing 3. In some embodiments, the liquid-cooling ducts 33 may be disposed at different positions of the battery cell 1, and the shapes of the liquid-cooling ducts 33 at different positions of the battery cell 1 may be the same or different. Optionally, for example, the liquid cooling pipeline 33 is a serpentine pipeline on the side surface of the battery cell, and is a rectangular pipe on the bottom surface of the battery cell. Can design the liquid cooling pipeline 33's of this position concrete shape structure according to the heat dissipation demand of the different positions of electric core like this, reinforcing liquid cooling pipeline 33 structural design's flexibility and variety have enlarged the range of application of this electric core structure.
Fig. 4 is a schematic structural diagram of another battery cell provided in an embodiment of the present disclosure, and as shown in fig. 4, the battery cell 1 is a rectangular parallelepiped structure, where the battery cell casing 3 includes a bottom casing, a top casing, a first side wall casing, a second side wall casing, a third side wall casing, and a fourth side wall casing. The bottom shell, the top shell, the first sidewall shell, the second sidewall shell, the third sidewall shell, and the fourth sidewall shell surround an inner cavity forming the cell casing 3. That is, the bottom casing, the top casing, the first sidewall casing, the second sidewall casing, the third sidewall casing, and the fourth sidewall casing surround the inner cavity of the cuboid structure of the battery cell 1, and the battery cell body 2 is disposed in the inner cavity, and the liquid cooling pipeline 33 is directly disposed between the inner cavity and the battery cell body 2. In the inner cavity of the cuboid structure of the battery cell 1, the first side wall shell and the second side wall shell are arranged oppositely, and the third side wall shell and the fourth side wall shell are arranged oppositely.
As shown in fig. 4, the liquid-cooling pipe 33 includes a first liquid-cooling pipe 331 and a second liquid-cooling pipe 332. The first liquid cooling pipes 331 are distributed in the first sidewall housing, the second sidewall housing, and the bottom housing. The second liquid cooling pipes 332 are distributed in the third sidewall housing and the fourth sidewall housing.
In some embodiments, as shown in fig. 4, the first liquid-cooled conduit 331 and the second liquid-cooled conduit 332 are in communication, and the first liquid-cooled conduit 331 and the second liquid-cooled conduit 332 may share, for example, the same liquid inlet 31 and liquid outlet 32. As shown in fig. 4, for example, the first liquid-cooling pipe 331 may be a circular pipe placed vertically, and the second liquid-cooling pipe 332 may be a circular pipe placed horizontally. First liquid cooling pipeline 331 distributes at the bottom casing, can dispel the heat to the bottom of the electric core body 2 with bottom casing contact, and first liquid cooling pipeline 331 distributes at first lateral wall casing and second lateral wall casing, can dispel the heat to two lateral walls of the electric core body 2 with first lateral wall casing and second lateral wall casing contact simultaneously. As shown in fig. 4, the second liquid-cooled ducts 332 may be distributed at the third side wall casing and the fourth side wall casing, for example, and the second liquid-cooled ducts 332 may be distributed at the first side wall casing and the second side wall casing, which is equivalent to surround the whole side wall of the cell body 2.
In some embodiments, the first liquid-cooled conduit 331 and the second liquid-cooled conduit 332 may share the same liquid inlet and liquid outlet, for example. Alternatively, the first liquid-cooled conduit 331 and the second liquid-cooled conduit 332 may, for example, share the same liquid inlet, but differ in their liquid outlets. Alternatively, the first and second liquid-cooled conduits 331, 332 may share the same liquid outlet, for example, but have different liquid inlets. Alternatively, the liquid inlets and liquid outlets of the first liquid-cooling pipeline 331 and the second liquid-cooling pipeline 332 are different.
In some embodiments, the cell may be provided with a plurality of first liquid-cooling pipes, for example. Alternatively, the electric core may be provided with a plurality of second liquid cooling pipes, for example. Alternatively, the electrical core may include a plurality of first liquid cooling pipes and a plurality of second liquid cooling pipes, for example.
According to the technical scheme provided by the embodiment of the disclosure, the first liquid cooling pipeline 331 and the second liquid cooling pipeline 332 are arranged, the first liquid cooling pipeline 331 is distributed on the first side wall shell, the second side wall shell and the bottom shell, and the second liquid cooling pipeline 332 is distributed on the third side wall shell and the fourth side wall shell. Therefore, each side wall and the bottom shell of the battery cell can be guaranteed to be capable of effectively contacting and radiating with the liquid cooling pipeline, the contact area between the liquid cooling pipeline and the battery cell is enlarged, the heat exchange capacity of the heat radiation process of the battery cell is enhanced, and the heat radiation efficiency of the battery cell is effectively improved.
Fig. 5 is a schematic structural diagram of another electrical core provided in an embodiment of the present disclosure, and as shown in fig. 5, the liquid cooling pipelines inside the electrical core 1 include a third liquid cooling pipeline 333 and a fourth liquid cooling pipeline 334, and flowing directions of cooling liquids circulating in the third liquid cooling pipeline 333 and the fourth liquid cooling pipeline 334 are opposite. The liquid inlets comprise a first liquid inlet 311 and a second liquid inlet 312; the liquid outlets include a first liquid outlet 321 and a second liquid outlet 322; the third liquid-cooled conduit 333 communicates the first liquid inlet 311 and the first liquid outlet 321; a fourth liquid cooled conduit 334 communicates the second liquid inlet 312 with the second liquid outlet 322.
In some embodiments, the electric core may be provided with a plurality of third liquid cooling ducts, for example. Alternatively, the electric core may be provided with a plurality of fourth liquid cooling pipes, for example. Alternatively, the electric core may include, for example, a plurality of third liquid-cooling ducts and a plurality of fourth liquid-cooling ducts at the same time.
According to the technical scheme, the flowing direction of the cooling liquid in the third liquid cooling pipeline and the fourth liquid cooling pipeline is set to be opposite, so that the heat exchange efficiency between the liquid cooling pipeline and the battery cell can be further enhanced, and the heat dissipation of different positions of the battery cell can be more uniform.
The embodiment of the present disclosure further provides a battery module, which includes a plurality of any one of the cell structures provided by the embodiments of the present disclosure.
In some embodiments, the battery module includes a plurality of battery cells, for example, 1, 2, 3, 4, 5, etc. battery cells may be provided, and the number of battery cells in the battery module may be set according to the performance requirement of an actual battery module, for example, the number of battery cells in the battery module is not limited in the embodiment of the present disclosure.
In some embodiments, the liquid outlet of one of the two adjacent cells is connected to the liquid inlet of the other cell. As shown in fig. 6, fig. 6 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure. As can be seen from fig. 6, the battery module 4 includes 3 battery cells 11, 12, and 13. The liquid inlet 31 of the battery cell 11 is connected to an external liquid cooling mechanism, the liquid outlet of the battery cell 11 is connected to the liquid inlet of the battery cell 12, the liquid outlet of the battery cell 12 is connected to the liquid inlet of the battery cell 13, and the liquid outlet 32 of the battery cell 13 is connected to the external liquid cooling mechanism. Communication pipelines 5 are respectively arranged among the battery cell 11, the battery cell 12 and the battery cell 13, a liquid outlet of the battery cell 11 is connected with a liquid inlet of the battery cell 12 through the communication pipelines 5, and a liquid outlet of the battery cell 12 is connected with a liquid inlet of the battery cell 13 through the communication pipelines 5.
In some embodiments, as shown in fig. 6, for example, each cell connects the liquid inlet and the liquid outlet of a different cell through the communication pipe 5 between the cells, so that the whole battery module 4 can be connected to the external liquid cooling mechanism by only providing one liquid inlet 31 and one liquid outlet 32.
Fig. 6 shows only an exemplary positional structure of the liquid inlet 31 and the liquid outlet 32 of the battery module 4 connected to the external liquid cooling mechanism. In some embodiments, the liquid inlet 31 and the liquid outlet 32 of the battery module 4 connected to the external liquid cooling mechanism may be, for example, a liquid inlet of any one of the battery cells may be used as a liquid inlet of the battery module 4 connected to the external liquid cooling mechanism, and a liquid outlet of any one of the battery cells may also be used as a liquid outlet of the battery module 4 connected to the external liquid cooling mechanism.
In some embodiments, the liquid inlet and the liquid outlet of the battery module 4 connected to the external liquid cooling mechanism may be disposed on different battery cells, for example, as shown in fig. 6, the liquid inlet 31 of the battery module 4 connected to the external liquid cooling mechanism is disposed on the battery cell 11, and the liquid outlet 32 of the battery module 4 connected to the external liquid cooling mechanism is disposed on the battery 13.
In some embodiments, fig. 7 is a schematic structural diagram of another battery module provided in the embodiments of the present disclosure, and as shown in fig. 7, a liquid inlet and a liquid outlet of the battery module 4 connected to an external liquid cooling mechanism may be disposed on the same battery cell, for example. The liquid inlet 31 that battery module 4 and outside liquid cooling mechanism are connected sets up on electric core 11, and the liquid outlet 32 that battery module 4 and outside liquid cooling mechanism are connected sets up on electric core 11.
In some embodiments, the liquid cooling pipes in two adjacent cells are connected. As shown in fig. 7, the communication channels between the cells include an inlet communication channel 51 and an outlet communication channel 52. The liquid cooling pipeline inside the battery cell 11 is communicated with the liquid cooling pipeline inside the battery cell 12 through a liquid inlet communicating pipeline 51 and a liquid outlet communicating pipeline 52, and the liquid cooling pipeline inside the battery cell 12 is communicated with the liquid cooling pipeline inside the battery cell 13 through a liquid inlet communicating pipeline 51 and a liquid outlet communicating pipeline 52.
According to the technical scheme provided by the embodiment of the disclosure, the liquid outlet of one of the two adjacent electric cores is connected with the liquid inlet of the other electric core, so that the whole battery module is only required to be provided with one liquid inlet to be connected with the external liquid cooling mechanism, and only one liquid outlet is arranged to be connected with the external liquid cooling mechanism, and the complexity of the design of the internal pipeline of the battery module can be well simplified.
Fig. 8 is a schematic structural view of another battery module provided in an embodiment of the present disclosure, and as shown in fig. 8, the battery module further includes a battery case 6, and a plurality of battery cells 1 are located in an inner cavity of the battery case 6.
Referring to the cell structure shown in fig. 1, the cell casing 3 of each cell 1 is provided with a liquid inlet 31 and a liquid outlet 32, and the liquid inlet 31 and the liquid outlet 32 can be arranged at any position of the cell casing 3 according to the design requirement of the cell structure.
In the structure of battery module, the battery module includes a plurality of electric cores, and the position that the liquid inlet of at least part electric core set up on the cell shell is different, and has the position difference that the liquid outlet of at least part electric core set up on the cell shell. Or, in the structure of the battery module, the positions of the liquid inlets of only part of the cells arranged on the cell shell are different. Or, in the structure of the battery module, the positions of the liquid outlets of only part of the cells on the cell shell are different.
Fig. 9 is a schematic structural diagram of another battery module according to an embodiment of the present disclosure, and as shown in fig. 9, a liquid inlet bus duct 7 and a liquid outlet bus duct 8 are further disposed in a battery housing of the battery module 4. The battery cell 11 is electrically connected to the battery cell 12, a liquid inlet of the battery cell 11 and a liquid inlet of the battery cell 12 are both connected to the liquid inlet converging pipeline 7, and a liquid inlet of the liquid inlet converging pipeline 7 is used for connecting an external liquid cooling mechanism. The liquid outlet of the electric core 11 and the liquid outlet of the electric core 12 are both connected with the liquid outlet converging pipeline 8, and the liquid outlet of the liquid outlet converging pipeline 8 is used for connecting an external liquid cooling mechanism.
In some embodiments, the liquid inlets of at least some of the cells are in communication with a liquid inlet manifold. And the liquid outlets of at least part of the battery cells are communicated with a liquid outlet confluence pipeline. Referring to the battery module structures shown in fig. 6 and 7, when the liquid cooling pipes in two adjacent electric cores are connected, a liquid inlet and a liquid inlet collecting pipe can be arranged in the electric core group communicated with the liquid cooling pipes to be communicated, and a liquid outlet and a liquid inlet collecting pipe can be arranged to be communicated. The liquid inlet of each battery cell is not required to be communicated with the liquid inlet confluence pipeline, and the liquid outlet of each battery cell is not required to be communicated with the liquid outlet confluence pipeline.
According to the technical scheme, the liquid inlets of at least partial battery cells are different, and/or the liquid outlets of at least partial battery cells are different, so that the flexibility of the connection relation between the battery cells in the whole battery module is improved, the complexity of reducing the design of the internal pipeline of the battery module can be taken into consideration when the battery module is designed in the structure of the battery cell, and different battery module design schemes can be met.
In some embodiments, the liquid inlets of at least some of the cells communicate with the same liquid inlet manifold. And the liquid outlets of at least part of the battery cells are communicated with the same liquid outlet confluence pipeline. Fig. 10 is a schematic structural view of another battery module according to an embodiment of the present disclosure, and as shown in fig. 10, the liquid inlet bus duct includes a first inlet bus duct 71 and a first inlet bus duct 72, and the liquid outlet bus duct includes a first outlet bus duct 81 and a second outlet bus duct 82. Wherein, the liquid inlets of the battery cells 11 and 12 are communicated with the first inlet confluence pipeline 71, and the liquid inlets of the battery cells 13 and 14 are communicated with the second inlet confluence pipeline 72. The liquid outlets of the battery cells 11 and 12 communicate with a first outlet manifold 81, and the liquid outlets of the battery cells 13 and 14 communicate with a second outlet manifold 82.
Optionally, a liquid inlet of the battery cell connected with the liquid inlet confluence pipeline is arranged at the top of the battery cell shell, and a liquid outlet of the battery cell connected with the liquid outlet confluence pipeline is arranged at the top of the battery cell shell. This kind of structural design can make things convenient for the liquid inlet to converge the flow pipe and be connected with the liquid inlet of each electric core, also makes things convenient for the liquid outlet to converge the flow pipe and be connected with the liquid outlet of each electric core, and the inside pipeline's that converges of battery module position and structural design of being convenient for simultaneously simplify the inside pipeline setting's of whole battery module complexity.
Fig. 11 is a schematic structural view of another battery module according to an embodiment of the disclosure, and as shown in fig. 11, the battery module 4 further includes a heat dissipation fan 9. The battery module 4 further includes a battery case 6, and the plurality of battery cells 1 are located in an inner cavity of the battery case 6. A heat dissipation air duct is formed between the battery shell 6 and the series-parallel connection structure of the battery cells 1 formed by the plurality of battery cells 1. The cooling fan 9 is configured to dissipate heat of the plurality of battery cells 1 through the cooling air duct. Because a gap exists between the battery cells 1 and the battery case 6, the heat dissipation fan 9 can form a heat dissipation air duct through the gap to perform air cooling heat dissipation on each battery cell 1.
The technical scheme that this disclosure provided sets up radiator fan on the battery casing of battery module, can carry out the forced air cooling heat dissipation to electric core through this radiator fan, further optimization and the radiating effect who improves this electric core.
In some embodiments, a groove structure and/or a protrusion structure is/are arranged on a side surface of the battery shell facing the cell series-parallel connection structure.
As shown in fig. 11, a protruding structure 61 is disposed on a side surface of the battery case 6 of the battery module 4 facing the battery cell 1, and the protruding structure 61 can increase a gap between the battery cell 1 and the battery case 6, so as to increase a size of a heat dissipation air duct, increase an air circulation area during air cooling heat dissipation, and enhance a heat dissipation effect.
In the battery module 4, the protruding structure 61 provided on the battery case 6 may be provided at any position on one side surface of the battery case 6 facing the battery cell 1, for example. The shape of the protruding structure 61 may be, for example, a rectangular parallelepiped, a cylinder, a triangle, or the like. The shape of the raised structure 61 may be any shape of raised structure known to those skilled in the art that can increase the gap spacing.
In some embodiments, a groove structure is disposed on a side surface of the battery case facing the cell series-parallel connection structure. Fig. 12 is a schematic structural diagram of another battery module provided in an embodiment of the present disclosure, and as shown in fig. 12, a groove structure 62 is disposed on a side surface, facing the battery core 1, of the battery case 6 of the battery module 4, and the groove structure 62 may increase a gap between the battery core 1 and the battery case 6.
In the battery module 4, the groove structure 62 provided on the battery case 6 may be provided at any position on a side surface of the battery case 6 facing the battery cell 1, for example. The shape of the groove structure 62 may be, for example, a cuboid, a cylinder, a triangle, etc. The shape of the groove structure 62 may be any shape of groove structure known to those skilled in the art that can increase the gap spacing.
In some embodiments, as shown in fig. 12, a side surface of the battery housing 6 of the battery module 4 facing the battery core 1 may be provided with a protrusion structure 61 and a groove structure 62, for example. And the shapes of the plurality of projection structures 61 provided on the battery case 6 may be the same or different, and the shapes of the plurality of groove structures 62 provided on the battery case 6 may be the same or different. Specifically, it may be set according to the structural design of the actual battery module, which is not limited by the present disclosure.
In some embodiments, the number of the protrusion structures 61 provided on the battery case 6 of the battery module 4 may be plural, or the number of the groove structures 62 provided on the battery case 6 of the battery module 4 may be plural. The present disclosure does not limit the number of the projection structures 61 and the number of the groove structures 62 provided on the battery case 6.
The technical scheme that this disclosed embodiment provided sets up groove structure and/or protruding structure at battery shell internal surface, can be so that can have certain clearance between electric core and the battery shell to increased the space in heat dissipation wind channel between battery shell and the electric core, when radiator fan is carrying out the forced air cooling heat dissipation to electric core, be favorable to the circulation of air, reinforcing forced air cooling radiating effect.
The embodiment of the disclosure also provides a vehicle, which comprises the structure of any one of the battery modules provided by the embodiment of the disclosure.
The vehicle provided by the embodiment of the disclosure comprises the structure of the battery module disclosed by each embodiment, has the same or corresponding beneficial effects, and is not repeated herein for avoiding repetition.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The battery cell is characterized by comprising a battery cell body and a battery cell shell;
the inner cavity of the battery cell shell is provided with a battery cell body; the battery cell shell comprises a liquid inlet and a liquid outlet, and a liquid cooling pipeline is arranged in the battery cell shell; the liquid cooling pipeline communicates the liquid inlet with the liquid outlet.
2. The electrical core of claim 1, wherein the liquid cooling conduit is distributed in a serpentine shape.
3. The cell of claim 1, wherein the cell casing comprises a bottom casing, a top casing, a first sidewall casing, a second sidewall casing, a third sidewall casing, and a fourth sidewall casing; the bottom casing, the top casing, the first sidewall casing, the second sidewall casing, the third sidewall casing, and the fourth sidewall casing surround an inner cavity forming the cell casing; the first sidewall housing is opposite the second sidewall housing; the third sidewall housing and the fourth sidewall housing are opposed;
the liquid cooling pipelines comprise a first liquid cooling pipeline and a second liquid cooling pipeline; the first liquid cooling pipelines are distributed in the first side wall shell, the second side wall shell and the bottom shell; the second liquid cooling pipeline is distributed on the third side wall shell and the fourth side wall shell.
4. The electrical core of claim 1, wherein the liquid cooling conduits comprise a third liquid cooling conduit and a fourth liquid cooling conduit; the flowing directions of the cooling liquid in the third liquid cooling pipeline and the fourth liquid cooling pipeline are opposite;
the liquid inlet comprises a first liquid inlet and a second liquid inlet; the liquid outlets comprise a first liquid outlet and a second liquid outlet; the third liquid cooling conduit communicates the first liquid inlet with the first liquid outlet; the fourth liquid cooling conduit communicates the second liquid inlet with the second liquid outlet.
5. A battery module, characterized by comprising a plurality of battery cells according to any one of claims 1 to 4.
6. The battery module of claim 5, wherein the liquid outlet of one of the two adjacent cells is connected to the liquid inlet of the other cell.
7. The battery module of claim 5, further comprising a battery housing, wherein the plurality of battery cells are located in an inner cavity of the battery housing;
at least some of the cells have different liquid inlets and/or at least some of the cells have different liquid outlets; a liquid inlet confluence pipeline and a liquid outlet confluence pipeline are also arranged in the battery shell; at least part of the liquid inlets of the battery cells are communicated with the liquid inlet confluence pipeline; and at least part of the liquid outlets of the battery cells are communicated with the liquid outlet confluence pipeline.
8. The battery module according to claim 5, further comprising a heat dissipation fan; the battery module further comprises a battery shell, and the plurality of battery cells are positioned in an inner cavity of the battery shell; a heat dissipation air duct is formed between the battery shell and a battery cell series-parallel structure formed by a plurality of battery cells; the heat dissipation fan is used for dissipating heat of the plurality of battery cells through the heat dissipation air duct.
9. The battery module according to claim 8, wherein a side surface of the battery housing facing the cell series-parallel connection structure is provided with a groove structure and/or a protrusion structure.
10. A vehicle characterized by comprising the battery module according to any one of claims 5 to 9.
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| CN202220471175.0U CN217655950U (en) | 2022-03-04 | 2022-03-04 | Battery core, battery module and vehicle |
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| CN202220471175.0U CN217655950U (en) | 2022-03-04 | 2022-03-04 | Battery core, battery module and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115528349A (en) * | 2022-11-03 | 2022-12-27 | 楚能新能源股份有限公司 | Single battery and battery module of integrated thermal management structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115528349A (en) * | 2022-11-03 | 2022-12-27 | 楚能新能源股份有限公司 | Single battery and battery module of integrated thermal management structure |
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