CN115149169A - Battery package and car - Google Patents
Battery package and car Download PDFInfo
- Publication number
- CN115149169A CN115149169A CN202210921045.7A CN202210921045A CN115149169A CN 115149169 A CN115149169 A CN 115149169A CN 202210921045 A CN202210921045 A CN 202210921045A CN 115149169 A CN115149169 A CN 115149169A
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- Prior art keywords
- battery
- battery pack
- battery module
- shell
- housing
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/375—Vent means sensitive to or responsive to temperature
-
- 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
Abstract
The invention discloses a battery pack and an automobile, wherein the battery pack comprises an upper shell and a lower shell which are mutually covered, the upper shell and the lower shell jointly enclose to form an accommodating space, and the upper shell is used for being installed at the bottom of a cabin of the automobile. The battery module is arranged in the accommodating space, the lower end of the battery module is provided with an explosion-proof valve facing the lower shell, and the upper end of the battery module is arranged in the upper shell. The technical scheme of the invention reduces the damage to the vehicle cabin when the battery pack is out of control due to heat.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a battery pack and an automobile.
Background
In recent years, the appearance of new energy automobiles plays a great role in promoting social development and environmental protection, and the power automobile serving as a rechargeable battery is a power source of the new energy automobiles and is widely applied to the field of the new energy automobiles.
Wherein, the battery package generally is fixed in the bottom in car cabin, and the battery package can produce a large amount of heats in the course of the work, also can take place some side reactions under the circumstances such as short circuit, overcharge, and then produce a quantitative gas, if the heat is not in time effluvium, can lead to the thermal runaway phenomenon when increasing to the certain degree along with gas, and then the explosion-proof valve blasting towards car cabin direction setting and erupt high-pressure high-temperature gas to the car cabin direction, influence passenger's in the car cabin safety.
Disclosure of Invention
The invention mainly aims to provide a battery pack, aiming at reducing the damage to a vehicle cabin when the battery pack is out of control due to heat.
In order to achieve the above object, the present invention provides a battery pack, including:
the automobile shell comprises an upper shell and a lower shell which are mutually covered, wherein the upper shell and the lower shell jointly enclose to form an accommodating space, and the upper shell is used for being installed at the bottom of a cabin of an automobile;
the battery module is arranged in the accommodating space, the lower end of the battery module is provided with an explosion-proof valve facing the lower shell, and the upper end of the battery module is arranged on the upper shell.
Optionally, the battery module includes a plurality of battery monomers, and is a plurality of the battery monomer is according to the syntropy formation of arranging of predetermined mode the battery module, each the battery monomer orientation the terminal surface of casing all is equipped with down the explosion-proof valve.
Optionally, go up the casing and include first shell and the second shell that closes mutually, first shell is located the second shell orientation one side of casing down, first shell with be provided with the liquid cooling system between the second shell.
Optionally, the liquid cooling system includes a liquid cooling pipe, the liquid cooling pipe is disposed between the first shell portion and the second shell portion, and is used for flowing cooling liquid.
Optionally, the inner side of the top wall of the first shell portion is abutted to the battery module, a first mounting cavity with one open end is formed in the outer side of the first shell portion, the liquid cooling pipeline is arranged in the first mounting cavity, and the second shell portion covers the opening.
Optionally, the liquid cooling pipe is integrally cast with the first shell portion.
Optionally, the battery module is bonded to the upper housing through a heat-conducting adhesive; and/or the presence of a gas in the gas,
the battery module is fastened to the upper case by a first fastener.
Optionally, the end face of the battery module having the explosion-proof valve has a gap with the bottom surface of the lower case.
Optionally, the thickness of the lower shell is less than the thickness of the upper shell; and/or the presence of a gas in the gas,
the lower shell is formed by a thin-wall steel plate or aluminum alloy through a stamping process.
Optionally, the upper housing is further provided with a second mounting cavity, and a battery management system and a high-voltage electrical system are mounted in the second mounting cavity.
Optionally, the upper housing further comprises a mounting bracket and a mounting cover, the first housing portion is provided with a mounting hole, the mounting bracket is mounted on one side of the mounting hole facing the battery module, the mounting cover is detachably mounted on the other side, and the first housing portion, the mounting bracket and the mounting cover together enclose to form the second mounting cavity.
The invention further provides an automobile which comprises an automobile cabin, a seat beam arranged at the bottom of the automobile cabin and the battery pack, wherein the upper shell of the battery pack is mounted on the seat beam through a second fastener.
According to the technical scheme, the battery pack is arranged at the bottom of the vehicle cabin and comprises an upper shell and a lower shell which are mutually covered, the upper shell and the lower shell jointly enclose to form an accommodating space, the upper shell is fixed at the bottom of the vehicle cabin, the battery module is arranged in the accommodating space, the lower end of the battery module is provided with an explosion-proof valve facing the lower shell, and the upper end of the battery module is arranged on the upper shell. The one end that has the explosion-proof valve with the battery module sets up down, deviates from the cabin setting promptly, and the battery module is invertd promptly for impact force when explosion-proof valve explodes can not cause the injury to the cabin towards ground, thereby reduces the harm to the cabin when thermal runaway. So fireproof and heat-insulating materials such as mica plates and the like are not needed to be arranged, and the weight and the protection cost of the battery pack are further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded view of a battery pack in an embodiment of an automobile according to the present invention;
fig. 2 is an exploded view of the upper case of the battery pack in fig. 1;
fig. 3 is a partial sectional view of the battery pack of fig. 1.
The reference numbers illustrate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 10 | |
12 | |
| 11 | |
121 | Containing |
| 111 | |
13 | |
| 112 | |
131 | |
| 113 | |
14 | |
| 114 | |
141 | |
| 115 | |
142 | Explosion- |
| 116 | |
15 | |
| 117 | |
20 | Seat beam |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In the prior art, the battery pack 10 is generally disposed at the bottom of the cabin of the vehicle, in order to prevent the battery pack 10 from overheating, a heat dissipation channel is disposed inside the battery pack 10, and a heat dissipation plate is mounted on the surface of the battery pack 10, so that the heat is driven by the wind flow generated during the traveling process of the vehicle to help the battery pack 10 dissipate the heat. However, with the development of batteries, the energy density of the battery pack 10 is continuously increased, and with the gradual increase of the heat dissipation requirement of the battery pack 10, the conventional air cooling heat dissipation is difficult to meet the requirement. And be equipped with battery module 14 in the battery package 10, battery module 14 is formed by a plurality of battery monomer 141, battery monomer 141 is inside short circuit, some side reactions can take place under the circumstances such as overcharge, and then produce a certain amount of gas, if the heat is not in time effluvium, when increasing to a certain extent along with gas, can lead to some battery monomer 141 in the battery module 14 inside to appear the thermal runaway phenomenon, and then the explosion-proof valve 142 that sets up towards the cabin direction explodes, break through the casing of battery package 10, and erupt high-pressure high temperature gas to the cabin direction, simultaneously still can stretch on other battery monomer 141, make other battery monomer 141 also take place the thermal runaway phenomenon, and then make more high temperature high pressure gas impact the cabin, influence the safety of passenger in the cabin.
In view of the above, the present invention provides a battery pack 10 mounted on the bottom of a vehicle cabin.
In the embodiment of the present invention, as shown in fig. 1 to 3, the battery pack 10 includes an upper case 11 and a lower case 12 that are covered with each other, the upper case 11 and the lower case 12 together enclose an accommodating space 121, the upper case 11 is used for being fixed to the bottom of the vehicle cabin, the battery module 14 is installed in the accommodating space 121, the lower end of the battery module 14 is provided with an explosion-proof valve 142 facing the lower case 12, and the upper end is installed on the upper case 11.
Specifically, the battery pack 10 includes an upper case 11 and a lower case 12 that are covered with each other and fixed to the bottom of the vehicle cabin through the upper case 11, and the battery module 14 is mounted on the upper case 11 and the lower case 12 to form an accommodating space 121. The lower end of the battery module 14 is provided with an explosion-proof valve 142 facing the lower case 12, and the specific structure of the battery module 14 is generally as follows: the battery module 14 generally comprises a plurality of battery cells 141, each battery cell 141 has all seted up explosion-proof valve 142 towards the tip of lower casing 12, make the lower extreme of battery module 14 be formed with a plurality of explosion-proof valves 142, when the inside thermal runaway that appears of battery cell 141, the high temperature high-pressure gas in the battery cell 141 washes explosion-proof valve 142 open earlier and makes inside gaseous the letting out, and for further letting out high temperature high-pressure gas, the pressure release mouth has been seted up to the lower casing 12 of battery package 10, thereby discharge high temperature high-pressure gas outside the battery package, thereby reduce the possibility that the battery explodes. In the prior art, the explosion-proof valve 142 is generally placed on the side facing the cabin, so that the explosion-proof valve 142 has great damage to the cabin when being exploded, and therefore, fire-proof heat-insulating materials such as mica plates need to be arranged, the protection effect is limited, the overall weight and volume of the battery pack 10 are increased, and the energy density of the battery pack 10 is reduced. Therefore, the end, provided with the explosion-proof valve 142, of the battery module 14 is arranged downwards, namely, the end is arranged away from the vehicle cabin, namely, the battery module 14 is inverted, so that the impact force generated when the explosion-proof valve 142 explodes faces the ground, the vehicle cabin cannot be damaged, and the damage to the vehicle cabin caused by thermal runaway is reduced. And fire-proof heat-insulating materials such as mica plates are not required, thereby reducing the weight and the protection cost of the battery pack 10.
In one embodiment, the battery module 14 includes a plurality of battery cells 141, the battery cells 141 are arranged in the same direction according to a predetermined arrangement manner to form the battery module 14, and the lower end surface of each battery cell 141 is provided with an explosion-proof valve 142. Specifically, the battery module 14 is formed by arranging and fixing a plurality of identical battery cells 141 (also referred to as cells) in the same direction according to a preset manner, and the orientations of the positive electrodes and the negative electrodes of the plurality of battery cells 141 are the same. One end of the battery cell 141 is provided with a post and an explosion-proof valve 142, and the explosion-proof valve 142 is generally formed by a locally thinned thinning part for performing local thinning on the end surface of the battery cell 141, or is an explosion-proof opening arranged at the end part of the battery cell 141, so that when thermal runaway occurs inside the battery cell 141, the explosion-proof valve 142 is firstly broken to discharge high-temperature and high-pressure gas, and the possibility of explosion of the battery cell 141 due to the fact that the high-temperature and high-pressure gas is not timely discharged is reduced.
The upper shell 11 and the lower shell 12 are fastened and connected by bolts, so that the lower shell 12 is convenient to disassemble, and when the bottom of the automobile is scratched to damage the lower shell 12, the bolts are only required to be disassembled and the lower shell 12 is replaced. Of course, in other embodiments, the connection may be made by snap-fit or adhesive.
According to the technical scheme, the battery pack 10 is arranged at the bottom of the vehicle cabin, the battery pack 10 comprises an upper shell 11 and a lower shell 12 which are mutually covered, the upper shell 11 and the lower shell 12 jointly enclose to form an accommodating space 121, the upper shell 11 is used for being fixed at the bottom of the vehicle cabin, the battery module 14 is arranged in the accommodating space 121, the lower end of the battery module 14 is provided with an explosion-proof valve 142 facing the lower shell 12, and the upper end of the battery module is arranged on the first shell part 111. The one end that has explosion-proof valve 142 with battery module 14 sets up down, deviates from the cabin setting promptly, battery module 14 inverts promptly for impact force when explosion-proof valve 142 explodes can not cause the injury to the cabin towards ground, so need not to set up fire prevention thermal insulation material such as mica plate, thereby reduces battery package 10's weight and protection cost.
In one embodiment, the upper housing 11 includes a first housing portion 111 and a second housing portion 112 that are closed, the first housing portion 111 is disposed on a side of the second housing portion 112 facing the lower housing 12, and the liquid cooling system 13 is disposed between the first housing portion 111 and the second housing portion 112. Specifically, this scheme adopts the liquid cooling heat dissipation, compares in the air-cooled heat dissipation, and the liquid cooling can be more take away the heat that battery package 10 produced, satisfies high energy density battery package 10's heat dissipation demand. The liquid cooling system 13 is correspondingly arranged in the upper shell 11, namely on the side away from the explosion-proof valve 142, so that on one hand, more heat can be taken away, and on the other hand, the damage to the liquid cooling system 13 caused by the explosion of the explosion-proof valve 142 is avoided; the liquid cooling system 13 is correspondingly arranged in the upper shell 11, namely, arranged on one side facing the bottom of the cabin, so that on one hand, the strength of the upper shell 11 is enhanced, and the upper shell 11 can be directly used as a cabin bottom plate, so that the strength of the cabin bottom plate is further increased, on the other hand, the requirement on the bearing capacity of the lower shell 12 is reduced, the depth of the lower shell 12 is reduced, the distance between the lower shell 12 and the ground is increased, and the possibility that the lower shell 12 is damaged due to the fact that the bottom of an automobile is scratched is reduced.
Referring to fig. 2, in an embodiment, the liquid cooling system 13 includes a liquid cooling pipe 131, and the liquid cooling pipe 131 is disposed between the first shell portion 111 and the second shell portion 112 for flowing a cooling liquid. Specifically, the liquid cooling pipe 131 is disposed between the first shell portion 111 and the second shell portion 112, and the liquid cooling pipe 131 has a certain length, referring to fig. 2, such that the liquid cooling pipe 131 is continuously bent and surrounded between the first shell portion 111 and the second shell portion 112 and is arranged in a predetermined manner. And a plurality of liquid cooling pipes 131 can be provided, so that the distribution density of the liquid cooling pipes 131 is increased, and the heat dissipation capacity of the liquid cooling system 13 is improved. The coolant continuously flows in the liquid cooling pipe 131, thereby continuously taking away heat generated from the battery module 14. The cooling fluid may be chilled water or a coolant. In cold winter, in order to reduce the influence of too low temperature on the cruising ability of the battery pack 10, liquid with a heating function such as hot water can be introduced into the cooling pipeline, so that the cruising ability of the battery pack 10 is improved.
Further, the inner side of the first housing part 111 abuts against the battery module 14, the outer side is provided with a first mounting cavity 113 with an opening at one end, the liquid cooling pipeline 131 is arranged in the first mounting cavity 113, and the second housing part 112 covers the opening. Specifically, the liquid cooling pipe 131 is disposed at a bottom wall of the chamber in the first mounting chamber 113, and the second housing portion 112 is covered at the opening, thereby sealing the liquid cooling system 13. The material of the second shell 112 may be a metal material such as an aluminum alloy, or may be a material such as plastic. Sealing performance can be improved by welding or bonding the circumference of the second shell portion 112 to the circumference of the opening. Bolted connections may also be used. And a plurality of laterally protruding protrusions may be formed at a circumference of the second shell portion 112, thereby increasing a contact area and a connection length of the second shell portion 112 with the first shell portion 111 and thus enhancing connection stability thereof.
To further enhance the strength of the first shell portion 111, in an embodiment, the liquid cooling pipe 131 is integrally cast with the first shell portion 111. Specifically, the integral casting molding may be directly employed, or the contour of the first shell portion 111 may be cast first, and then the liquid cooling pipe 131 may be machined via machining. Compare in adopting the polylith panel beating welding to form, this scheme has improved the intensity of going up casing 11, satisfies the demand of bearing of whole battery package 10, has because of last casing 11 can directly regard as cabin bottom plate, so further increases the intensity of cabin bottom plate, satisfies the demand of trampling. Compared with the case where the first case 111 is thickened to increase the strength, the present embodiment reduces the volume and weight of the battery pack 10 and simplifies the structure.
In order to improve the cooling capability of the liquid cooling system 13, in an embodiment, the battery module 14 is adhered to the upper housing 11 by a heat conductive adhesive. Namely, the battery module 14 abuts and is fixed to the upper housing 11, heat is dissipated through contact, and the heat conducting glue conducts heat, thereby further improving the heat dissipation capability of the liquid cooling system 13. The battery module 14 is bonded to the upper case 11 through the heat conductive adhesive, so that the lower case 12 only needs to have a wrapping protection effect on the battery module 14 and does not need to have a bearing effect, thereby further reducing the requirement on the strength of the lower case 12.
Referring to fig. 1 to 3, in another embodiment, the battery module 14 is fastened to the upper case 11 by a first fastener. Thereby fixedly mounting the battery module 14 to the upper case 11. The first fastening member may be a fastening structure such as a bolt or a screw.
In one embodiment, the end surface of the battery module 14 having the explosion-proof valve 142 has a gap with the bottom surface of the lower case 12. Specifically, compared with the prior art, the liquid cooling system 13 is generally disposed in the lower housing 12, the explosion-proof valve 142 of the battery module 14 faces the cabin, the placement direction of the battery module 14 is adjusted by the solution, the arrangement of the fireproof material structure is omitted, the liquid cooling system 13 is moved onto the upper housing 11, and the battery module 14 is fixed on the upper housing 11, so that the distance from the lower housing 12 to the battery module 14 can be set and increased without increasing the volume of the battery pack 10, that is, a gap is formed between the end face of the battery module 14 having the explosion-proof valve 142 and the bottom face of the lower housing 12, and thus, when the bottom of the battery module 14 is scratched, the possibility of damaging the battery module 14 and the cooling system is not reduced.
And because the liquid cooling system 13 is moved to the upper shell 11, the battery module 14 is fixed on the upper shell 11, and the bearing requirement on the lower shell 12 is reduced. In one embodiment, the thickness of the lower case 12 is smaller than that of the upper case 11, thereby reducing the strength of the lower case 12, avoiding strength redundancy and increasing cost.
In another embodiment, lower housing 12 is formed from a thin-walled steel sheet or aluminum alloy via a stamping process. Specifically, the lower case 12 is obtained through a stamping process using a thin metal plate, on one hand, the stamping process can reduce the thickness of the lower case 12 compared to a casting process, thereby reducing material waste of the battery pack 10, and on the other hand, the stamping process has higher production efficiency and saves cost.
Referring to fig. 1 to 3 again, in order to ensure that the battery pack 10 can work normally, in an embodiment, the upper housing 11 further defines a second mounting cavity 114, and the battery management system 15 and the high-voltage electrical system are mounted in the second mounting cavity 114. Specifically, the battery management system 15 can effectively monitor and control the operation of the battery module 14, thereby ensuring the safety of the battery module 14 and reducing the occurrence of thermal runaway. The battery management system 15 is generally a battery high-voltage device and a BMS battery management system 15, so as to intelligently manage and maintain each battery cell 141, prevent overcharge and overdischarge of the battery, prolong the service life of the battery, and monitor the state of the battery. The high-voltage electrical system is used for controlling a high-voltage loop of the battery pack 10, so that the battery management system 15 and the high-voltage electrical system are matched with each other to control the low-voltage loop and the high-voltage loop of the whole battery pack 10, and the normal work of the battery pack 10 is ensured.
Furthermore, the upper case 11 further includes a mounting bracket 115 and a mounting cover 116, the first case portion 111 is provided with a mounting hole 117, the mounting bracket 115 is mounted on one side of the mounting hole 117 facing the battery module 14, the mounting cover 116 is detachably mounted on the other side, and the first case portion 111, the mounting bracket 115 and the mounting cover 116 together enclose to form a second mounting cavity 114. Specifically, the battery management system 15 is centrally disposed in the mounting hole 117, and the battery management system 15 is fixed by the mounting bracket 115, and the wire connection between the battery management system 15 and each battery cell 141 is facilitated. And the installation cover 116 is detachably mounted on one side of the upper shell 11 facing the cabin, so that when the battery needs to be detached and maintained, the battery pack 10 does not need to be detached, or the battery enters the vehicle bottom, and the installation cover 116 only needs to be opened in the cabin, so that the battery pack 10 can be overhauled, and the maintenance work of maintenance personnel is facilitated.
The invention further provides an automobile, which comprises an automobile cabin and a seat cross beam 20 arranged at the bottom of the automobile cabin, wherein the specific structure of the seat cross beam 20 refers to the above embodiments, and as the automobile adopts all technical solutions of all the above embodiments, the automobile at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The automobile adopts a CTC (Cell to Chassis) battery pack integration scheme design, namely a battery integration technology, the technology can directly install the battery pack 10 on a Chassis of the electric automobile, and an upper shell 11 of the battery pack 10 is directly used as a bottom plate of an automobile cabin, so that an integrated structure of the battery pack 10 and an automobile body is realized. With reference to fig. 1 to 3, a seat cross member 20 is disposed in the vehicle cabin, and the upper housing 11 of the vehicle is mounted on the seat cross member 20 by a second fastening member. Specifically, the second fastener passes through the seat rail 20 in sequence. The second case portion 112 and the first case portion 111, thereby fixing the upper case 11 to the seat cross member 20 and further fixing the battery pack 10 to the vehicle floor. Wherein, the second fastener can be a fastening structure such as a bolt or a screw. Of course, in other embodiments, the battery pack 10 may be fixedly mounted to the vehicle via the vehicle frame.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. A battery pack, comprising:
the automobile body comprises an upper shell and a lower shell which are mutually covered, wherein the upper shell and the lower shell jointly enclose to form an accommodating space, and the upper shell is used for being installed at the bottom of an automobile cabin;
the battery module is arranged in the accommodating space, the lower end of the battery module is provided with an explosion-proof valve facing the lower shell, and the upper end of the battery module is arranged on the upper shell.
2. The battery pack according to claim 1, wherein the battery module comprises a plurality of battery cells, the battery cells are arranged in a predetermined arrangement in the same direction to form the battery module, and the end surface of each battery cell facing the lower case is provided with the explosion-proof valve.
3. The battery pack of claim 1, wherein the upper housing comprises a first housing part and a second housing part that are closed with each other, the first housing part is disposed on a side of the second housing part facing the lower housing, and a liquid cooling system is disposed between the first housing part and the second housing part.
4. The battery pack of claim 3, wherein the liquid cooling system comprises a liquid cooling conduit disposed between the first housing portion and the second housing portion for flowing a cooling liquid.
5. The battery pack according to claim 4, wherein the first housing portion has an inner side abutting against the battery module and an outer side defining a first mounting cavity having an opening at one end, the liquid cooling conduit is disposed in the first mounting cavity, and the second housing portion covers the opening.
6. The battery pack of claim 4, wherein the liquid cooling conduit is integrally cast with the first housing portion.
7. The battery pack according to claim 1, wherein the battery module is adhered to the upper case by a thermally conductive adhesive; and/or the presence of a gas in the gas,
the battery module is fastened to the upper case by a first fastener.
8. The battery pack according to claim 1, wherein the end surface of the battery module having the explosion-proof valve has a gap from the bottom surface of the lower case.
9. The battery pack according to claim 1, wherein the lower case has a thickness smaller than that of the upper case; and/or the presence of a gas in the gas,
the lower shell is formed by a thin-wall steel plate or aluminum alloy through a stamping process.
10. The automobile of any one of claims 1-9, wherein the upper shell further defines a second mounting cavity, and a battery management system and a high-voltage electrical system are mounted in the second mounting cavity.
11. The battery pack of claim 10, wherein the upper case further comprises a mounting bracket and a mounting cover, the first case portion defines a mounting hole, the mounting bracket is mounted at one side of the mounting hole facing the battery module, the mounting cover is detachably mounted at the other side, and the first case portion, the mounting bracket and the mounting cover together enclose the second mounting cavity.
12. An automobile, characterized by comprising a cabin, a seat beam arranged at the bottom of the cabin, and the battery pack according to any one of claims 1 to 11, wherein the upper housing of the battery pack is mounted on the seat beam by a second fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921045.7A CN115149169A (en) | 2022-08-02 | 2022-08-02 | Battery package and car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921045.7A CN115149169A (en) | 2022-08-02 | 2022-08-02 | Battery package and car |
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| CN115149169A true CN115149169A (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210921045.7A Pending CN115149169A (en) | 2022-08-02 | 2022-08-02 | Battery package and car |
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| CN111106277A (en) * | 2018-12-29 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Battery pack |
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| CN216085026U (en) * | 2021-08-13 | 2022-03-18 | 恒大新能源技术(深圳)有限公司 | Battery pack shell and battery pack |
| CN114435104A (en) * | 2022-03-10 | 2022-05-06 | 威睿电动汽车技术(宁波)有限公司 | Vehicle chassis subassembly and car |
| WO2022135169A1 (en) * | 2020-12-22 | 2022-06-30 | 比亚迪股份有限公司 | Battery module, battery pack and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109461859A (en) * | 2018-11-05 | 2019-03-12 | 江苏海宝电池科技有限公司 | The electric boosted automobile-used lithium battery pack of one kind and its assemble method |
| CN111106277A (en) * | 2018-12-29 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Battery pack |
| WO2021208969A1 (en) * | 2020-04-16 | 2021-10-21 | 宁波吉利汽车研究开发有限公司 | Power battery pack and vehicle |
| WO2022135169A1 (en) * | 2020-12-22 | 2022-06-30 | 比亚迪股份有限公司 | Battery module, battery pack and vehicle |
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