CN210142675U - Battery module, battery system with same and electric vehicle - Google Patents
Battery module, battery system with same and electric vehicle Download PDFInfo
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- CN210142675U CN210142675U CN201921276999.7U CN201921276999U CN210142675U CN 210142675 U CN210142675 U CN 210142675U CN 201921276999 U CN201921276999 U CN 201921276999U CN 210142675 U CN210142675 U CN 210142675U
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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
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Abstract
The utility model discloses a battery module and battery system and electric vehicle that have this battery module. The battery module includes: a housing including an upper end plate, a lower end plate, and first to fourth side plates, the housing having a receiving chamber, the first and second side plates being disposed at a spacing in a first direction, the third and fourth side plates being disposed at a spacing in a second direction; the battery cell module comprises a plurality of battery cell modules, a plurality of battery cell modules and a plurality of battery cells, wherein the battery cell modules are arranged in an accommodating cavity at intervals along a first direction; and the upper end part of the supporting plate is connected with the upper end plate, the lower end part of the supporting plate is connected with the lower end plate, the supporting plate is positioned between two adjacent battery cell modules in the first direction, and each of the first side plate, the second side plate and the supporting plate comprises a plate body, a heater arranged on the plate body and an adjacent battery cell module. According to the utility model discloses battery module has simple structure, the material quantity is few, light in weight, heating efficiency is high, the heating is even etc. advantage.
Description
Technical Field
The utility model relates to a battery field specifically relates to battery module, still relates to battery system and electric vehicle who has this battery module.
Background
The temperature has a very significant influence on the performance of the battery (including the capacity, power, charge-discharge efficiency, safety, life and the like of the battery). In a low-temperature environment, the charge and discharge power performance of the battery is limited, and the battery needs to be heated to maintain the performance of the battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery module and have battery system and electric vehicle of this battery module in order to overcome the problem that prior art exists.
In order to achieve the above object, the present invention provides, in a first aspect, a battery module including: a housing including an upper end panel, a lower end panel, a first side panel, a second side panel, a third side panel, and a fourth side panel that are capable of being assembled together, the housing having a receiving cavity, wherein the first side panel and the second side panel are disposed in a first direction at a spacing, and the third side panel and the fourth side panel are disposed in a second direction at a spacing, the first direction being perpendicular to the second direction; the battery cell module comprises a plurality of battery cells, a plurality of battery cell modules and a plurality of battery lugs, wherein the battery cell modules are arranged in the accommodating cavity at intervals along the first direction, each battery cell module comprises a plurality of battery cells, and each battery cell comprises a body and a lug arranged on the body; and at least one supporting plate, wherein the upper end part of the supporting plate is connected with the upper end plate, the lower end part of the supporting plate is connected with the lower end plate, the supporting plate is positioned between two adjacent battery cell modules in the first direction, each of the first side plate, the second side plate and the supporting plate comprises a plate body and a heater arranged on the plate body, and each of the first side plate, the second side plate and the supporting plate is adjacent to the battery cell module.
According to the utility model discloses a battery module has simple structure, the material quantity is few, light in weight, heating efficiency is high, the even advantage of heating.
Preferably, the battery cell is a soft-package battery cell, and the supporting plate is arranged between two adjacent battery cell modules.
Preferably, each of the first side plate, the second side plate, and the support plate is in contact with a folded edge of an encapsulation film of the body.
Preferably, the plate body has a mounting cavity, and at least a portion of the heater is disposed in the mounting cavity.
Preferably, the heater is press-fitted in the mounting cavity.
Preferably, the first side plate is connected to each of the upper end plate, the lower end plate, and the third side plate by a fastener or welding, the second side plate is connected to each of the upper end plate, the lower end plate, and the third side plate by a fastener or welding, and the support plate is connected to each of the upper end plate and the lower end plate by a fastener or welding.
Preferably, the lower end panel is integrally formed with the third side panel, and the fourth side panel is connected to each of the upper end panel, the lower end panel, the first side panel, and the second side panel by a fastener or a snap.
Preferably, the battery module further includes: the first mounting plate is arranged on the outer side face of the first side plate, the second mounting plate is arranged on the outer side face of the second side plate, a first mounting hole is formed in the first mounting plate, and a second mounting hole is formed in the second mounting plate; and the first reinforcing plate and the second reinforcing plate are obliquely arranged, the first end part of the first reinforcing plate is connected with the outer side surface of the first side plate, the second end part of the first reinforcing plate is connected with the first mounting plate, the first end part of the second reinforcing plate is connected with the outer side surface of the second side plate, and the second end part of the second reinforcing plate is connected with the second mounting plate.
The second aspect of the present invention provides a battery system, the battery system includes the battery module according to the first aspect of the present invention.
According to the utility model discloses a battery system has simple structure, the material quantity is few, light in weight, heating efficiency is high, the even advantage of heating.
The third aspect of the present invention provides an electric vehicle including a battery system according to the second aspect of the present invention.
According to the utility model discloses an electric vehicle has the advantage that charge time is short, the mileage is long.
Drawings
Fig. 1 is a schematic structural diagram of a cell module according to an embodiment of the present invention;
fig. 2 is an exploded view of a cell module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a temperature-sensitive fire protection device according to an embodiment of the present invention;
fig. 4 is an exploded view of a temperature-sensitive fire protection device according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a first non-insulating fire protection plate of the temperature-sensitive fire protection apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a temperature sensor of a temperature-sensitive fire protection device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a battery module according to an embodiment of the present invention;
fig. 8 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;
fig. 9 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 10 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention;
fig. 11 is a schematic view of a partial structure of a battery module according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The following describes a battery module 100 according to an embodiment of the present invention with reference to the drawings. As shown in fig. 7 to 11, a battery module 100 according to an embodiment of the present invention includes a housing 2, a plurality of cell modules 1, and at least one support plate 3.
The housing 2 includes an upper end plate 21, a lower end plate 22, a first side plate 23, a second side plate 24, a third side plate 25, and a fourth side plate 26 that can be assembled together, and the housing 2 has a receiving cavity 27. The first and second side panels 23, 24 are spaced apart in a first direction, and the third and fourth side panels 25, 26 are spaced apart in a second direction, the first direction being perpendicular to the second direction. A plurality of cell modules 1 are arranged in the accommodating cavity 27 at intervals along the first direction, each cell module 1 includes a plurality of cells 10, and each cell 10 includes a body 110 and a tab 120 arranged on the body 110.
The upper end of the support plate 3 is connected to the upper end plate 21, the lower end of the support plate 3 is connected to the lower end plate 22, and the support plate 3 is located between two adjacent cell modules 1 in the first direction. Each of the first side plate 23, the second side plate 24, and the support plate 3 includes a plate body 31 and a heater 32 provided on the plate body 31, and each of the first side plate 23, the second side plate 24, and the support plate 3 is adjacent to the cell module 1, so as to heat a side surface of the cell module 1 (the battery cell 10).
Since the first side plate 23 and the second side plate 24 are part of the casing 2, the first side plate 23 and the second side plate 24 can not only heat the side surfaces of the cell module 1 (the battery cells 10), but also provide structural strength to the battery module 100.
Since the upper end portion of the support plate 3 is connected to the upper end plate 21 and the lower end portion of the support plate 3 is connected to the lower end plate 22, the support plate 3 can not only heat the side surface of the cell module 1 (cell 10), but also provide structural strength to the battery module 100.
According to the present invention, the battery module 100 is provided with the first side plate 23, the second side plate 24, and the support plate 3 having the heater 32, so that the heating member can be integrated with the support member. Thereby, the structure of the battery module 100 can be simplified, the material consumption of the battery module 100 can be reduced, the weight of the battery module 100 can be reduced, and the energy density of the battery system can be improved.
Moreover, the first side plate 23, the second side plate 24 and the support plate 3 are used for heating the side surfaces of the plurality of battery cells 10, so that the heat conduction rates of the plurality of battery cells 10 are basically consistent, and the adverse effect caused by large temperature difference of the battery cells 10 is avoided.
In addition, by disposing the support plates 3 between two adjacent cell modules 1, it is possible to heat the cell modules 1 (the battery cells 10) from both sides thereof at the same time, whereby it is possible to improve the heating efficiency, so as to shorten the charging waiting time in cold weather and increase the charging efficiency.
Therefore, according to the utility model discloses battery module 100 has simple structure, the material quantity is few, light in weight, heating efficiency is high, heat advantages such as even.
The following describes a cell module 1 according to an embodiment of the present invention with reference to the drawings. As shown in fig. 1 to 6, a battery cell module 1 according to an embodiment of the present invention includes a plurality of battery cells 10 and at least one temperature-sensitive fire protection device 20.
Each of the battery cells 10 includes a body 110 and a tab 120 provided on the body 110. The temperature-sensing fire protection device 20 is located between the bodies 110 of two adjacent electric cores 10, and the temperature-sensing fire protection device 20 includes a first non-heat-insulation fire protection plate 210 and a temperature sensor 220.
A first non-insulating flame retardant panel 210 is located between the bodies 110 of two adjacent cells 10, and the first non-insulating flame retardant panel 210 is adjacent to the bodies 110 of two adjacent cells 10, so that heat from the cells 10 can be transferred to the first non-insulating flame retardant panel 210. The first non-insulating fireproof plate 210 is provided with a receiving groove 211, and at least a part of the temperature sensing part 221 of the temperature sensor 220 is disposed in the receiving groove 211, so that the temperature of the electric core 10 is detected by the temperature sensor 220.
In the prior art, the temperature of the body of the battery cell is simulated and reflected by detecting the temperature data of the tab of the battery cell. However, when the battery system is in operation, the operating current is in a constantly changing process, and the temperature change of the tab of the battery cell and the temperature change of the body of the battery cell are not in a determined functional relationship. Thus, the temperature data of the tab of the battery cell cannot accurately reflect the temperature of the body of the battery cell. Therefore, the temperature of the body of the battery cell is simulated and reflected by detecting the temperature data of the lug of the battery cell, and the detection result is not objective.
As will be understood by those skilled in the art, the plurality of battery cells 10 of the cell module 1 are arranged in the thickness direction of the battery cells 10 (body 110). Therefore, the temperature-sensitive fire prevention device 20 is located between the bodies 110 of two adjacent battery cells 10 in the thickness direction of the battery cells 10 (bodies 110). Further, the first non-heat-insulating and flame-retardant sheet 210 is not adjacent to and opposed to the side surface of the battery cell 10, but adjacent to and opposed to the main surface of the battery cell 10 (the surface having the largest area of the battery cell 10).
From this establish temperature sensor 220 on first non-thermal-insulated PLASTIC LAMINATED 210 can detect the temperature of the body 110 of electric core 10 more accurately to can make battery management system can accurately, high-efficiently master the actual temperature data of electric core 10, so that send more accurate control command to the battery system including electric core module 1, and then can improve the performance such as security performance, life of battery module.
Furthermore, according to the utility model discloses cell module 1 is through establishing temperature sensor 220 on first non-thermal-insulated PLASTIC LAMINATED 210, rather than establishing on body 110 of electric core 10 to can avoid the inflation face atress of body 110 uneven, so that alright under the condition of detecting the temperature of body 110 more accurately, prolong the life of electric core 10.
In the case of fire of most electric vehicles, the fire is caused by spontaneous combustion of the battery cell 10, and the fire of the battery cell 10 is a transmission and spreading process. According to the utility model discloses electricity core module 1 is located between two adjacent electric cores 10 through making first non-thermal-insulated PLASTIC LAMINATED 210 to can take place thermal runaway, when striking a fire even at certain electric core 10, delay, prevent high temperature diffusion, intensity of a fire effectively and stretch to adjacent electric core 10, so that reduce the harm that electric core 10 struck a fire. The safety performance of the cell module 1, the battery module having the cell module 1, and the electric vehicle can be greatly improved.
Therefore, according to the utility model discloses electric core module 1 has advantages such as the security performance is good, temperature-detecting is accurate, long service life.
As shown in fig. 1 to 6, in some embodiments of the present invention, the battery cell module 1 includes a plurality of battery cells 10 and a plurality of temperature-sensitive fire protection devices 20. Preferably, the battery cell 10 is a soft-package battery cell.
A temperature-sensing fire-proof device 20 is arranged between two adjacent electric cores 10. The safety performance of the cell module 1, the battery module including the cell module 1, and the electric vehicle can be further improved.
In one embodiment of the invention, as shown in fig. 4, the temperature sensitive fire protection device 20 includes a first non-insulating fire protection plate 210, a second non-insulating fire protection plate 230, a third non-insulating fire protection plate 240, and a temperature sensor 220.
The first non-insulating fireproof plate 210 is provided with a receiving groove 211, and at least a part of the temperature sensing part 221 of the temperature sensor 220 is disposed in the receiving groove 211. As shown in fig. 4 and 5, the outer ends of the receiving grooves 211 may be open. This not only makes the temperature-sensitive fire protection device 20 more compact, but also eliminates the need for a structure in which the lead 222 for avoiding the temperature sensor 220 is provided. Wherein, the outer end of the receiving groove 211 is the end of the receiving groove 211 far from the center (middle part) of the first non-insulating fireproof plate 210.
As shown in fig. 1 to 4 and 6, the temperature sensor 220 may include a temperature sensing part 221 and a wire 222. At least a part of the temperature sensing part 221 is located in the receiving groove 211, and at least a part of the wire 222 extends out of the receiving groove 211.
Preferably, a heat conductive adhesive is filled between the at least one portion of the temperature sensing part 221 and the wall surface of the receiving groove 211. In other words, the at least one portion of the temperature sensing part 221 is bonded in the accommodating groove 211 by the heat conductive adhesive. Therefore, not only can the processing precision of the accommodating groove 211 be reduced so as to reduce the manufacturing difficulty and the manufacturing cost of the battery cell module 1, but also the heat of the body 110 of the battery cell 10 can be more sufficiently conducted to the temperature sensing part 221 so as to further improve the detection accuracy of the temperature sensor 220. The thermally conductive gel may be a thermally conductive silicone gel.
The temperature sensing part 221 may be a thermistor, the entire temperature sensing part 221 may be located in the receiving groove 211, a part of the wire 222 is located in the receiving groove 211, and the rest of the wire 222 extends out of the receiving groove 211.
Since the temperature-sensitive fire-proof device 20 is located between the bodies 110 of two adjacent battery cells 10, the second non-insulating fire-proof plate 230 and the third non-insulating fire-proof plate 240 are also located between the bodies 110 of two adjacent battery cells 10.
As shown in fig. 2, the second non-insulating fire protection plate 230 of each temperature-sensitive fire protection device 20 is adjacent to the body 110 of one of the two adjacent cells 10, and the third non-insulating fire protection plate 240 of each temperature-sensitive fire protection device 20 is adjacent to the body 110 of the other of the two adjacent cells 10. Specifically, for two adjacent electric cores 10 and the temperature-sensitive fire protection device 20 located therebetween, the second non-insulating fire protection plate 230 of the temperature-sensitive fire protection device 20 is adjacent to the body 110 of one of the two adjacent electric cores 10, and the third non-insulating fire protection plate 240 of the temperature-sensitive fire protection device 20 is adjacent to the body 110 of the other of the two adjacent electric cores 10.
Through the arrangement of the second non-heat-insulation fireproof plate 230 and the third non-heat-insulation fireproof plate 240, the uneven stress on the expansion surface of the body 110 can be further avoided, and therefore the service life of the battery cell 10 can be further prolonged under the condition that the temperature of the body 110 is detected more accurately.
In an embodiment of the present invention, the second non-heat-insulation fireproof plate 230 of each temperature-sensitive fireproof device 20 is in contact with the body 110 of the one of the two adjacent electric cores 10, and the third non-heat-insulation fireproof plate 240 of each temperature-sensitive fireproof device 20 is in contact with the body 110 of the other of the two adjacent electric cores 10. Therefore, the structure of the battery cell module 1 can be more compact, and the heat of the body 110 of the battery cell 10 can be more sufficiently conducted to the second non-thermal insulation fireproof plate 230 and the third non-thermal insulation fireproof plate 240, and further more sufficiently conducted to the temperature sensing part 221, so that the detection accuracy of the temperature sensor 220 can be further improved.
Preferably, a third bonding layer is provided between the second non-heat-insulation fireproof plate 230 of each temperature-sensitive fireproof device 20 and the body 110 of the one of the two adjacent electric cores 10, and a fourth bonding layer is provided between the third non-heat-insulation fireproof plate 240 of each temperature-sensitive fireproof device 20 and the body 110 of the other one of the two adjacent electric cores 10. Therefore, the structure of the battery cell module 1 can be more stable, and the heat of the body 110 of the battery cell 10 can be more sufficiently conducted to the second non-thermal insulation fireproof plate 230 and the third non-thermal insulation fireproof plate 240, and further more sufficiently conducted to the temperature sensing part 221, so that the detection accuracy of the temperature sensor 220 can be further improved.
As shown in fig. 4, the first non-insulating flame retardant panel 210 is located between the second 230 and third 240 non-insulating flame retardant panels, i.e. the first non-insulating flame retardant panel 210 is located between the second 230 and third 240 non-insulating flame retardant panels in the thickness direction of the cell 10. The first non-insulated flame retardant panel 210 is adjacent to each of the second non-insulated flame retardant panel 230 and the third non-insulated flame retardant panel 240.
In one example of the present invention, the first non-insulating flame retardant panel 210 is in contact with each of the second non-insulating flame retardant panel 230 and the third non-insulating flame retardant panel 240. Therefore, the structure of the battery cell module 1 can be more compact, and the heat of the body 110 of the battery cell 10 can be more sufficiently conducted to the first non-thermal insulation fireproof plate 210 and further to the temperature sensing part 221, so that the detection accuracy of the temperature sensor 220 can be further improved.
Preferably, a first adhesive layer is provided between the first non-insulating flame retardant panel 210 and the second non-insulating flame retardant panel 230, and a second adhesive layer is provided between the first non-insulating flame retardant panel 210 and the third non-insulating flame retardant panel 240. Therefore, the structure of the battery cell module 1 can be more stable, and the heat of the body 110 of the battery cell 10 can be more sufficiently conducted to the first non-thermal insulation fireproof plate 210 and further more sufficiently conducted to the temperature sensing part 221, so that the detection accuracy of the temperature sensor 220 can be further improved.
Preferably, the first adhesive layer, the second adhesive layer, the third adhesive layer and the fourth adhesive layer may all be heat conductive adhesive layers.
In some examples of the invention, the surface of the second non-insulating flame retardant panel 230 that contacts the body 110 is planar, and the surface of the third non-insulating flame retardant panel 240 that contacts the body 110 is planar. Therefore, the uneven stress on the expansion surface of the body 110 can be further avoided, and the service life of the battery cell 10 can be further prolonged under the condition that the temperature of the body 110 is detected more accurately.
As shown in fig. 2-5, each of the first, second, and third non-insulating flame retardant panels 210, 230, 240 is a flat panel. This makes it possible to simplify the structure of the cell module 1 and to produce it more easily.
Each of the first, second, and third non-insulating fire prevention plates 210, 230, and 240 has a thermal conductivity greater than 0.12W/(m × K) and equal to or less than 300W/(m × K). Preferably, each of the first, second, and third non-insulating flame retardant panels 210, 230, and 240 has a thermal conductivity of 0.2W/(m × K) or more and 3W/(m × K) or less.
In a specific example of the present invention, the first non-insulating fireproof plate 210 is a quartz plate, a metal plate or a glass plate, the second non-insulating fireproof plate 230 is a quartz plate, a metal plate or a glass plate, and the third non-insulating fireproof plate 240 is a quartz plate, a metal plate or a glass plate.
It will be appreciated by those skilled in the art that the first, second and third non-insulating flame retardant panels 210, 230, 240 are not limited to being made of metal, quartz or glass, and that the first, second and third non-insulating flame retardant panels 210, 230, 240 may be made of any non-insulating material that is capable of preventing fires. Non-insulating materials are materials that are capable of transferring heat, and preferably are not good conductors of heat. At the same time, the non-insulating material is fire-resistant, that is to say, it is resistant to high temperatures when exposed to high-temperature flames
The non-heat-insulating material does not generate during burning
Physical changes such as melting, deformation, burn-through, brittle fracture, explosion and the like.
The utility model discloses battery module 100 is still provided. According to the utility model discloses battery module 100 includes shell 2 and according to the utility model discloses the electric core module 1 of above-mentioned embodiment.
The housing 2 comprises an upper end plate 21, a lower end plate 22, a first side plate 23, a second side plate 24, a third side plate 25 and a fourth side plate 26 which can be assembled together, the housing 2 has a containing cavity 27, and the battery cell module 1 is arranged in the containing cavity 27. The first and second side panels 23, 24 are spaced apart in a first direction, and the third and fourth side panels 25, 26 are spaced apart in a second direction, the first direction being perpendicular to the second direction.
Therefore, according to the utility model discloses battery module 100 has advantages such as the security performance is good, the temperature detects accuracy, long service life.
As shown in fig. 7-11, in some examples of the present invention, the battery module 100 may include a housing 2, a plurality of cell modules 1, and at least one support plate 3.
The housing 2 includes an upper end plate 21, a lower end plate 22, a first side plate 23, a second side plate 24, a third side plate 25, and a fourth side plate 26 that can be assembled together, and the housing 2 has a receiving cavity 27. The first and second side panels 23, 24 are spaced apart in the first direction and the third and fourth side panels 25, 26 are spaced apart in the second direction.
For example, the first direction may be a left-right direction, and the second direction may be a front-rear direction. The left-right direction is shown by arrow a in fig. 8, the up-down direction is shown by arrow B in fig. 8, and the front-back direction is shown by arrow C in fig. 10.
A plurality of cell modules 1 are arranged at intervals in the first direction in the receiving chamber 27. The upper end of the support plate 3 is connected to the upper end plate 21, the lower end of the support plate 3 is connected to the lower end plate 22, and the support plate 3 is located between two adjacent cell modules 1 in the first direction. Each of the first side plate 23, the second side plate 24, and the support plate 3 includes a plate body 31 and a heater 32 provided on the plate body 31, and each of the first side plate 23, the second side plate 24, and the support plate 3 is adjacent to the cell module 1 so as to heat a side surface of the cell module 1 (the battery cell 10).
Since the first side plate 23 and the second side plate 24 are part of the casing 2, the first side plate 23 and the second side plate 24 can not only heat the side surfaces of the cell module 1 (the battery cells 10), but also provide structural strength to the battery module 100.
Since the upper end portion of the support plate 3 is connected to the upper end plate 21 and the lower end portion of the support plate 3 is connected to the lower end plate 22, the support plate 3 can not only heat the side surface of the cell module 1 (cell 10), but also provide structural strength to the battery module 100.
According to the present invention, the battery module 100 is provided with the first side plate 23, the second side plate 24, and the support plate 3 having the heater 32, so that the heating member can be integrated with the support member. Thereby, the structure of the battery module 100 can be simplified, the material consumption of the battery module 100 can be reduced, the weight of the battery module 100 can be reduced, and the energy density of the battery system can be improved.
Moreover, the first side plate 23, the second side plate 24 and the support plate 3 are used for heating the side surfaces of the plurality of battery cells 10, so that the heat conduction rates of the plurality of battery cells 10 are basically consistent, and the adverse effect caused by large temperature difference of the battery cells 10 is avoided.
In addition, by disposing the support plates 3 between two adjacent cell modules 1, it is possible to heat the cell modules 1 (the battery cells 10) from both sides thereof at the same time, whereby it is possible to improve the heating efficiency, so as to shorten the charging waiting time in cold weather and increase the charging efficiency.
Therefore, according to the utility model discloses battery module 100 has simple structure, the material quantity is few, light in weight, heating efficiency is high, heat advantages such as even.
Preferably, the battery cells 10 of the battery cell module 1 may be disposed horizontally, and may also be disposed vertically.
As shown in fig. 8 and 9, in an example of the present invention, a supporting plate 3 is disposed between two adjacent cell modules 1. Thus, for the cell modules 1 located on both sides, the support plate 3 and the first side plate 23 (second side plate 24) can be used to heat them simultaneously from both sides; for the remaining cell modules 1, they can be heated simultaneously from both sides thereof by means of two support plates 3.
Each of the first side plate 23, the second side plate 24, and the support plate 3 may be in contact with the body 110 of the battery cell 10, so as to further improve heating efficiency. Preferably, each of the first side plate 23, the second side plate 24 and the support plate 3 may be in contact with a folded edge of an encapsulation film (e.g., an aluminum plastic film) of the body 110, in order to further improve heating efficiency.
As shown in fig. 11, the plate body 31 has a mounting cavity 33, and at least a part of the heater 32 is provided in the mounting cavity 33. The space occupied by the first side plate 23, the second side plate 24, and the support plate 3 can be further reduced, so that a larger space can be provided for the battery cell module 1 (battery cell 10), which is more favorable for increasing the energy density of the battery system.
Preferably, the heater 32 is press fit within the mounting cavity 33. Thereby, the heater 32 can be more firmly mounted in the mounting chamber 33.
In one specific example of the present invention, the first side plate 23 is connected to each of the upper end plate 21, the lower end plate 22, and the third side plate 25 by a fastener (e.g., a screw or a bolt) or welding (e.g., laser welding). The second side plate 24 is connected to each of the upper end plate 21, the lower end plate 22, and the third side plate 25 by a fastener (e.g., a screw or a bolt) or welding (e.g., laser welding). The support plate 3 is connected to each of the upper and lower end plates 21 and 22 by fasteners (e.g., screws or bolts) or welding (e.g., laser welding).
The fourth side plate 26 is connected to each of the upper end plate 21, the lower end plate 22, the first side plate 23, and the second side plate 24 by a fastener (e.g., a screw or a bolt) or a snap. Preferably, the lower end plate 22 is integrally formed with the third side plate 25. Whereby the structure of the battery module 100 and the housing 2 can be more rational.
As shown in fig. 7 to 9 and 11, the battery module 100 further includes a first mounting plate 41, a second mounting plate 42, a first reinforcing plate 51, and a second reinforcing plate 52.
The first mounting plate 41 is provided on the outer side surface of the first side plate 23, and the second mounting plate 42 is provided on the outer side surface of the second side plate 24. The first mounting plate 41 is provided with a first mounting hole 43, and the second mounting plate 42 is provided with a second mounting hole 44. The outer side surface of the first side plate 23 refers to a side surface of the first side plate 23 away from the accommodating cavity 27, and the outer side surface of the second side plate 24 refers to a side surface of the second side plate 24 away from the accommodating cavity 27. The battery module 100 can thus be mounted on the case of the battery system by fasteners (e.g., screws or bolts) passing through the first and second mounting holes 43 and 42.
Preferably, first mounting plate 41 may be perpendicular to first side plate 23 and second mounting plate 42 may be perpendicular to second side plate 24. Whereby the structure of the battery module 100 can be more rational.
Each of the first reinforcing plate 51 and the second reinforcing plate 52 is obliquely disposed. A first end (e.g., an upper end) of the first reinforcing plate 51 is connected to the outer side surface of the first side plate 23, and a second end (e.g., a lower end) of the first reinforcing plate 51 is connected to the first mounting plate 41. A first end (e.g., upper end) of the second reinforcement plate 52 is connected to the outer side of the second side plate 24 and a second end (e.g., lower end) of the second reinforcement plate 52 is connected to the second mounting plate 42. Thereby, the structural strength of the battery module 100 may be improved.
Preferably, the first mounting plate 41, the first reinforcing plate 51 and the first side plate 23 may be integrally formed, and the second mounting plate 42, the second reinforcing plate 52 and the second side plate 24 may be integrally formed. This can reduce the manufacturing difficulty and cost of the battery module 100 and improve the structural strength of the battery module 100.
As shown in fig. 11, the first reinforcing plate 51 is provided with a first operation hole 53, and the second reinforcing plate 52 is provided with a second operation hole 54. The fasteners can thus be inserted through the first and second mounting holes 43 and 42 through the first and second operation holes 53 and 54, so that the battery module 100 can be more conveniently and easily mounted on the case of the battery system.
The utility model also provides a battery system. According to the utility model discloses battery system includes according to the utility model discloses the battery module 100 of above-mentioned embodiment. Therefore, according to the utility model discloses battery system has advantages such as the security performance is good, the temperature detects accuracy, long service life.
The utility model also provides an electric vehicle. According to the utility model discloses electric vehicle includes according to the utility model discloses battery module 100 of above-mentioned embodiment. Therefore, according to the utility model discloses electric vehicle has advantages such as the security performance is good.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A battery module (100), comprising:
a housing (2), the housing (2) comprising an upper end plate (21), a lower end plate (22), a first side plate (23), a second side plate (24), a third side plate (25) and a fourth side plate (26) that can be assembled together, the housing (2) having a receiving cavity (27), wherein the first side plate (23) and the second side plate (24) are disposed at intervals in a first direction, the third side plate (25) and the fourth side plate (26) are disposed at intervals in a second direction, the first direction being perpendicular to the second direction;
a plurality of cell modules (1), wherein the cell modules (1) are arranged in the accommodating cavity (27) at intervals along the first direction, each cell module (1) comprises a plurality of cells (10), and each cell (10) comprises a body (110) and a tab (120) arranged on the body (110); and
at least one support plate (3), an upper end portion of the support plate (3) is connected to the upper end plate (21), a lower end portion of the support plate (3) is connected to the lower end plate (22), the support plate (3) is located between two adjacent cell modules (1) in the first direction, wherein each of the first side plate (23), the second side plate (24) and the support plate (3) comprises a plate body (31) and a heater (32) arranged on the plate body (31), and each of the first side plate (23), the second side plate (24) and the support plate (3) is adjacent to the cell module (1).
2. The battery module (100) according to claim 1, wherein the cells are flexible package cells, and one support plate (3) is arranged between two adjacent cell modules (1).
3. The battery module (100) according to claim 1, wherein each of the first side plate (23), the second side plate (24), and the support plate (3) is in contact with a folded edge of an encapsulation film of the body (110).
4. The battery module (100) according to claim 1, wherein the plate body (31) has a mounting cavity (33), and at least a portion of the heater (32) is provided in the mounting cavity (33).
5. The battery module (100) according to claim 4, wherein the heater (32) is press-fitted in the mounting cavity (33).
6. The battery module (100) according to claim 1, wherein the first side plate (23) is connected to each of the upper end plate (21), the lower end plate (22), and the third side plate (25) by a fastener or a weld, the second side plate (24) is connected to each of the upper end plate (21), the lower end plate (22), and the third side plate (25) by a fastener or a weld, and the support plate (3) is connected to each of the upper end plate (21) and the lower end plate (22) by a fastener or a weld.
7. The battery module (100) according to claim 6, wherein the lower end plate (22) is integrally formed with the third side plate (25), and the fourth side plate (26) is connected to each of the upper end plate (21), the lower end plate (22), the first side plate (23), and the second side plate (24) by a fastener or a snap.
8. The battery module (100) according to claim 1, further comprising:
the mounting structure comprises a first mounting plate (41) and a second mounting plate (42), wherein the first mounting plate (41) is arranged on the outer side face of the first side plate (23), the second mounting plate (42) is arranged on the outer side face of the second side plate (24), a first mounting hole (43) is formed in the first mounting plate (41), and a second mounting hole (44) is formed in the second mounting plate (42); and
a first reinforcing plate (51) and a second reinforcing plate (52), each of the first reinforcing plate (51) and the second reinforcing plate (52) being obliquely disposed, a first end portion of the first reinforcing plate (51) being connected to an outer side surface of the first side plate (23), a second end portion of the first reinforcing plate (51) being connected to the first mounting plate (41), a first end portion of the second reinforcing plate (52) being connected to an outer side surface of the second side plate (24), a second end portion of the second reinforcing plate (52) being connected to the second mounting plate (42).
9. A battery system, characterized by comprising the battery module (100) according to any one of claims 1 to 8.
10. An electric vehicle characterized by comprising the battery system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276999.7U CN210142675U (en) | 2019-08-07 | 2019-08-07 | Battery module, battery system with same and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276999.7U CN210142675U (en) | 2019-08-07 | 2019-08-07 | Battery module, battery system with same and electric vehicle |
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| Publication Number | Publication Date |
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| CN210142675U true CN210142675U (en) | 2020-03-13 |
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| CN201921276999.7U Active CN210142675U (en) | 2019-08-07 | 2019-08-07 | Battery module, battery system with same and electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021235783A1 (en) * | 2020-05-19 | 2021-11-25 | 주식회사 엘지에너지솔루션 | Battery module, battery pack comprising same, and vehicle |
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2019
- 2019-08-07 CN CN201921276999.7U patent/CN210142675U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021235783A1 (en) * | 2020-05-19 | 2021-11-25 | 주식회사 엘지에너지솔루션 | Battery module, battery pack comprising same, and vehicle |
| CN114747074A (en) * | 2020-05-19 | 2022-07-12 | 株式会社Lg新能源 | Battery module, battery pack including the same, and vehicle |
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