CN114678639B - Module upper cover, battery module and battery pack - Google Patents
Module upper cover, battery module and battery pack Download PDFInfo
- Publication number
- CN114678639B CN114678639B CN202210333791.4A CN202210333791A CN114678639B CN 114678639 B CN114678639 B CN 114678639B CN 202210333791 A CN202210333791 A CN 202210333791A CN 114678639 B CN114678639 B CN 114678639B
- Authority
- CN
- China
- Prior art keywords
- cover
- module
- movable
- exhaust hole
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
-
- 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
-
- 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 provides a module upper cover, a battery module and a battery pack. The module upper cover comprises a cover plate and a movable cover, the cover plate is provided with at least one first exhaust hole, the movable cover is movably connected with the cover plate, the movable cover is arranged on the upper side of the cover plate, and each movable cover covers and seals at least one first exhaust hole; the movable cover can move upwards to release the closure of the movable cover to the first exhaust hole. The movable cover of the module upper cover can move relative to the cover plate to open the first exhaust hole, and can reset after the gas is exhausted to close the first exhaust hole again, so that the dustproof and waterproof effects of the module upper cover are maintained.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a module upper cover, a battery module and a battery pack.
Background
The battery module generally includes a module housing and a plurality of unit cells disposed inside the module housing. For the battery module, when the battery module operates under high load, the single battery can exhaust gas to the inside of the module shell, and if the high-temperature gas cannot be discharged in time, the battery module can be damaged and even can cause safety accidents such as explosion.
In order to ensure that high-temperature gas can be discharged out of the battery module in time, and simultaneously in order to prevent dust and water outside the battery module from entering the battery module, an explosion-proof valve is arranged on an upper cover of the battery module of a part of factories. When the battery module runs under low load, the explosion-proof valve is in a closed state, and the explosion-proof valve can prevent dust and water from entering the inside of the module; when the air pressure in the module shell is increased to a certain value, the explosion-proof valve is opened, and high-temperature gas can be discharged through the explosion-proof valve.
However, most of the explosion-proof valves are disposable, and the valve plates of the explosion-proof valves are broken under the action of higher gas pressure; the gas in the module can be discharged from the crack of the valve plate, and the explosion-proof valve can not be waterproof and dustproof after the crack is formed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the module upper cover which can prevent water and dust and discharge high-temperature gas, and can prevent water and dust after the air discharge is completed.
The invention also provides a battery module with the module upper cover.
The invention also provides a battery pack with the battery module.
According to a first aspect of the invention, a module top cover includes: a cover plate for covering the top of the battery, the cover plate having at least one first vent hole; the movable covers are movably connected with the cover plate, are arranged on the upper side of the cover plate, each movable cover covers and seals at least one first exhaust hole, and can be pushed by the gas below the movable cover to move upwards so as to release the sealing of the movable cover on the first exhaust holes.
The module upper cover provided by the embodiment of the invention has at least the following beneficial effects: when the air pressure below the module upper cover is smaller, the movable cover can keep the first exhaust hole closed, and under the blocking effect of the movable cover, water and dust outside the module shell are difficult to enter the module shell from the first exhaust hole; when the air pressure below the upper cover of the module is large, the air below the movable cover can push the movable cover open, the sealing of the movable cover to the first exhaust hole is released, and then the air below the upper cover of the module can be exhausted through the first exhaust hole. The movable cover covers the first exhaust hole again along with the reduction of the air pressure below the upper cover of the high-temperature high-pressure air discharge module. The movable cover of the module upper cover can move relative to the cover plate to open the first exhaust hole, and can reset after the gas is exhausted to close the first exhaust hole again, so that the dustproof and waterproof effects of the module upper cover are maintained.
According to some embodiments of the invention, the cover plate includes a cover portion and at least one mounting portion, the first vent hole being provided in the cover portion; the mounting part is connected to the top of the covering part and protrudes relative to the top of the covering part, and is provided with a mounting hole; the movable cover comprises a baffle and a connector, the baffle covers the first exhaust hole, one end of the baffle is connected with the side part of the connector, and the end part of the connector is rotatably arranged in the mounting hole.
According to some embodiments of the invention, the baffle comprises a constriction and a body portion, the body portion and the connecting body being connected to two sides of the constriction, respectively; along the axial direction of the connecting body, the end part of the main body part protrudes relative to the shrinkage part, and the end part of the connecting body protrudes relative to the shrinkage part, so that the connecting body, the main body part and the shrinkage part jointly define a first accommodating groove, and a part of the mounting part is accommodated in the first accommodating groove.
According to some embodiments of the invention, the cover plate includes a cover portion and at least one mounting portion, the first vent hole being provided in the cover portion; the mounting part is connected to the top of the covering part and protrudes relative to the top of the covering part, and the mounting part is provided with a sliding groove; the movable cover comprises a baffle and a connector, the baffle covers the first exhaust hole, one end of the baffle is connected with the side part of the connector, the connector is slidably arranged in the sliding groove, and the connector can slide up and down along the sliding groove.
According to some embodiments of the invention, each of the connectors is connected to two of the mounting portions; for the two mounting portions connected with the same connecting body, one side of any one mounting portion facing the other mounting portion can be abutted against the baffle plate so as to prevent the baffle plate from moving along the axial direction of the connecting body.
According to some embodiments of the invention, the movable cover is provided with a plurality of movable covers, one end of the movable cover, which is used for being connected with the cover plate, is a connecting end, and one end of the movable cover, which is far away from the connecting end, is a movable end; and for two adjacent movable covers along the arrangement direction of the plurality of movable covers, the movable end of one movable cover is adjacent to the connecting end of the other movable cover.
According to some embodiments of the invention, the cover plate and the movable cover are both made of an insulating material.
According to a second aspect of the embodiment of the invention, a battery module includes: the module shell comprises a module lower shell and a module upper cover according to the embodiment of the first aspect, wherein the module lower shell is provided with a first accommodating cavity, the module upper cover is connected with the module lower shell to cover the first accommodating cavity, and the first exhaust hole is communicated with the first accommodating cavity; the battery is provided with a plurality of batteries, the batteries are accommodated in the first accommodating cavity, the top of the battery is provided with an explosion-proof valve, and the explosion-proof valve is opposite to the first exhaust hole.
According to some embodiments of the invention, the battery module further includes: the connecting pieces are arranged as conductors and are electrically connected with the batteries so as to enable the batteries in the battery module to be connected in series or in parallel; the electric isolation plate is insulated, the connecting piece is installed in the electric isolation plate, the electric isolation plate set up in the first holding chamber, just the electric isolation plate cover in the top of battery, the electric isolation plate has the second exhaust hole, the second exhaust hole with explosion-proof valve is relative, just the first exhaust hole with the second exhaust hole is relative.
According to an embodiment of the third aspect of the present invention, a battery module includes: the box body is internally provided with a second accommodating cavity and a third exhaust hole, and the third exhaust hole is communicated with the second accommodating cavity; the battery module of the second aspect is provided with a plurality of battery modules, and the plurality of battery modules are accommodated in the second accommodating cavity.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic perspective view of a module top cover in an embodiment of the invention;
FIG. 2 is a partial schematic view of the module top cover of FIG. 1;
FIG. 3 is an exploded view of a baffle and a mounting portion of the module cover shown in FIG. 2;
fig. 4 is a schematic perspective view of a battery according to an embodiment of the present invention;
FIG. 5 is a simplified schematic diagram of a baffle plate covering a first vent in an embodiment of the invention;
FIG. 6 is a simplified schematic illustration of the structure of FIG. 5 with the baffle plate uncovered from the first vent;
FIG. 7 is an exploded view of a baffle and a mounting portion slidably coupled to each other in accordance with an embodiment of the present invention;
fig. 8 is an exploded view of a battery module according to an embodiment of the present invention;
fig. 9 is an assembly view between an electrical separator and a battery in a battery module according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of the relative positions of an explosion proof valve, a first vent and a second vent;
fig. 11 is a schematic diagram (top view) of a plurality of batteries in a battery module connected in series;
fig. 12 is a schematic diagram (top view) of a plurality of parallel batteries in a battery module;
FIG. 13 is a schematic view of a battery pack according to an embodiment of the present invention;
fig. 14 is a schematic view of the principle that the case of the battery pack blocks the movable cover from rotating upward.
Reference numerals: 100-module upper cover, 101-cover plate, 102-movable cover, 103-first exhaust hole, 104-second accommodation groove, 201-installation part, 202-cover part, 301-installation hole, 302-shrinkage part, 303-connector, 304-main body part, 305-first accommodation groove, 306-baffle, 401-battery, 402-casing, 403-top cover, 404-explosion-proof valve, 405-positive pole, 406-negative pole, 407-pole, 501-module lower case, 502-first accommodation cavity, 503-module shell, 701-sliding groove, 800-battery module, 801-electric isolation plate, 901-positioning hole, 902-second exhaust hole, 1001-connection piece, 1301-battery pack, 1302-box, 1303-second accommodation cavity, 1304-third exhaust hole, 1401-top plate.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention provides a module upper cover 100, referring to fig. 1, the module upper cover 100 includes a cover plate 101 and a movable cover 102.
The cover plate 101 is used to cover the top of the battery 401, referring to fig. 1 and 2, the cover plate 101 has at least one first exhaust hole 103 (the first exhaust hole 103 is provided as a through hole), the movable cover 102 is also provided with at least one, and one movable cover 102 covers and closes at least one first exhaust hole 103. The movable cover 102 is movably connected with the cover plate 101, and the movable cover 102 is disposed on the upper side of the cover plate 101.
For convenience of description of the operation of the module upper cover 100, the battery module 800 and the battery 401 in the battery module 800 will be briefly described. Referring to fig. 4 and 5, the battery module 800 includes a module case 503 and a plurality of batteries 401, and referring to fig. 5, the module upper cover 100 as a part of the module case 503, the batteries 401 may be disposed inside the module case 503. Referring to fig. 4, a battery 401 includes a case 402, a winding core, an electrolyte, and a top cover 403 (winding core and electrolyte are not shown); the casing 402 is hollow, and top cap 403 is connected at the top of casing 402, and electrolyte and core all set up in the inside of casing 402, and the core is soaked in the electrolyte. The top cover 403 has an explosion-proof valve 404, and after the reaction between the winding core and the electrolyte, some gas is generated, when the gas in the casing 402 is too much, the gas in the casing 402 is discharged to the outside of the battery 401 through the explosion-proof valve 404, and then the gas is discharged to the outside of the battery module 800.
Referring to fig. 5, the movable cover 102 may cover the first exhaust hole 103 by its own weight, and accordingly, if the gas inside the module housing 503 needs to be exhausted, the gas inside the module housing 503 needs to overcome the air pressure outside the module housing 503 and the weight of the movable cover 102. When the battery module 800 is in the low load operation state, the battery 401 does not discharge the gas, or the battery 401 discharges only a small amount of the gas, and at this time, the air pressure inside the module case 503 is small enough to push the movable cover 102 open. The movable cover 102 keeps the first exhaust hole 103 closed, and water and dust outside the module housing 503 are difficult to enter the inside of the module housing 503 from the first exhaust hole 103 under the blocking action of the movable cover 102.
When the battery module 800 is in a high-load operation state (for example, the battery 401 in the battery module 800 is rapidly charged or discharged), the battery 401 discharges more high-temperature gas, the gas pressure inside the module housing 503 is higher, the gas inside the module housing 503 can push the movable cover 102 open, the closure of the first vent hole 103 by the movable cover 102 is released, and then the gas can be discharged to the outside of the module housing 503 through the first vent hole 103 (as shown in fig. 6).
As the high-temperature and high-pressure gas is discharged to the outside of the module housing 503, the gas pressure inside the module housing 503 gradually decreases; when the air pressure inside the module case 503 is reduced to a certain degree, the movable cover 102 covers the first air discharge hole 103 again.
The movable cover 102 of the module upper cover 100 may move with respect to the cover plate 101 to open the first exhaust hole 103, and may be reset after the gas is exhausted to close the first exhaust hole 103 again, thereby maintaining the dust-proof and waterproof effects of the module upper cover 100. In addition, the module upper cover 100 of the present invention can seal and exhaust the first exhaust hole 103 by means of the movable cover 102 which can move up and down, and the module upper cover 100 has a simple structure and low cost.
Referring to fig. 1 and 2, in some embodiments, a plurality of movable covers 102 and first exhaust holes 103 are provided, and the number of movable covers 102 and first exhaust holes 103 is equal, and each movable cover 102 is used to cover one first exhaust hole 103. Of course, the number of the movable covers 102 and the first exhaust holes 103 need not be equal, the number of the movable covers 102 may be less than the number of the first exhaust holes 103, and each movable cover 102 may cover a plurality of the first exhaust holes 103. For example, in some embodiments, each removable cover 102 is configured to cover two first vent holes 103; alternatively, in some embodiments, only one movable cover 102 is provided, and one movable cover 102 may cover all the first exhaust holes 103 at the same time. In addition, only one first exhaust hole 103 may be provided, and a plurality of movable covers 102 may be provided, where the plurality of movable covers 102 collectively cover one first exhaust hole 103; accordingly, in order to ensure airtightness, edges of the adjacent movable covers 102 need to be fitted to reduce a gap between the movable covers 102.
The movable connection between the movable cover 102 and the cover plate 101 may be a rotary connection or a sliding connection.
For example, in combination with fig. 2, 3, 5, and 6, in some embodiments, the cover plate 101 includes a cover portion 202 and a mounting portion 201, the movable cover 102 includes a baffle 306 and a connecting body 303, the connecting body 303 is connected to the mounting portion 201, and the movable cover 102 is rotatable about an axis of the connecting body 303 (the connecting body 303 may be provided in a cylindrical shape). Referring to fig. 8, the cover 202 may cover the top of the battery 401; referring to fig. 2 and 3, the first exhaust hole 103 is provided on the cover 202, the mounting part 201 is coupled to the top of the cover 202, and the mounting part 201 protrudes with respect to the top of the cover 202, and the mounting part 201 has a mounting hole 301. The baffle 306 is used for covering the first exhaust hole 103, one end of the baffle 306 is connected with the side part of the connecting body 303, and the connecting body 303 is rotatably penetrated in the mounting hole 301. In this arrangement, the gas to be discharged pushes the movable cover 102, specifically, the gas to be discharged pushes the baffle 306, and rotates the movable cover 102 upward.
In other embodiments, the cover 101 includes a cover 202 and a mounting portion 201 protruding from the top of the cover 202, and the movable cover 102 also includes a baffle 306 and a connector 303 connected to one end of the baffle 306, where the connector 303 is slidably disposed in the mounting portion 201. Referring to fig. 7, the mounting portion 201 has a sliding groove 701, the connection body 303 is slidably disposed in the sliding groove 701, and the connection body 303 can slide up and down along the sliding groove 701. In this arrangement, the gas to be discharged pushes the movable cover 102 open, specifically, the gas to be discharged pushes the baffle 306 and moves the movable cover 102 upward as a whole.
The cap plate 101 and the movable cover 102 may be made of an insulating material to improve the electrical safety of the battery module 800. For example, the insulating material used for manufacturing the cover plate 101 and the movable cover 102 may be, in particular, plastic, resin, mica, or the like. If the cover plate 101 and the movable cover 102 are both made of plastic, the baffle 306 and the connector 303 may be injection molded together, or the cover 202 and the mounting 201 may be injection molded together. Of course, the connecting body 303 and the baffle 306 may be two separate components, for example, one end of the baffle 306 is provided with a through hole for the connecting body 303 to pass through, and after the movable cover 102 and the cover 101 are assembled, the connecting body 303 may pass through the baffle 306 and penetrate into the mounting hole 301.
In the case where the mounting portion 201 is provided with the mounting hole 301, in order to facilitate insertion of the connector 303 into the mounting hole 301, the bottom end wall surface of the mounting hole 301 may be provided at a distance from the top surface of the cover portion 202. Accordingly, there is a gap between the connector 303 and the top surface of the cover 202; on this basis, one end of the baffle 306, which is close to the connecting body 303, is bent in a direction away from the covering portion 202 (or one end of the baffle 306, which is close to the connecting body 303, is tilted upwards), so that the bottom surface of the baffle 306 and the top surface of the covering portion 202 can be guaranteed to be well attached, and the sealing effect of the baffle 306 on the first exhaust hole 103 can be guaranteed.
In some embodiments, one movable cover 102 may be connected to only one mounting portion 201, i.e., one connecting body 303 is provided only in one mounting hole 301, or one connecting body 303 is provided only in one sliding groove 701. The connection body 303 and the mounting portion 201 are convenient to detach or mount, when the movable cover 102 needs to be detached, a user only needs to draw the connection body 303 away from the mounting hole 301 along the axial direction of the connection body 303, and similarly, when the movable cover 102 needs to be mounted, the user only needs to insert the connection body 303 into the mounting hole 301 along the axial direction of the connection body 303.
In some embodiments, one movable cover 102 may be connected to two mounting portions 201, and two ends of one connecting body 303 are respectively penetrated with different mounting holes 301; alternatively, both ends of one connector 303 are respectively provided in different slide grooves 701.
Taking fig. 3 as an example, two mounting portions 201 are disposed at intervals, each mounting portion 201 has one mounting hole 301 (in fig. 3, the mounting hole 301 of the front mounting portion 201 is disposed at the rear side of the mounting portion 201, not specifically shown), and both ends of the connection body 303 are respectively inserted into the different mounting holes 301. For two mounting portions 201 connected to the same connecting body 303, one side surface of any one mounting portion 201 facing the other mounting portion 201 can abut against the shutter 306 to block the shutter 306 from moving in the axial direction of the connecting body 303. For example, in fig. 3, the front one of the mounting portions 201 can be abutted against the shutter 306 on the rear side surface thereof, thereby preventing the shutter 306 from moving forward; the rear mounting portion 201 has a front side surface capable of abutting against the shutter 306, thereby preventing the shutter 306 from moving rearward. Therefore, if one movable cover 102 is connected to two mounting portions 201, the two mounting portions 201 can jointly restrict the movement of the movable cover 102 in the axial direction of the connecting body 303; after the movable cover 102 is rotated upward and falls down a plurality of times, the position of the movable cover 102 in the axial direction of the connecting body 303 is not changed greatly under the constraint of the two mounting portions 201, and the movable cover 102 can still cover the first exhaust hole 103 accurately and close the first exhaust hole 103. The movable cover 102 moves along the radial direction of the connector 303, and can be limited by the contact between the connector 303 and the wall of the mounting hole 301.
Similarly, referring to fig. 7, each of the mounting portions 201 has one sliding groove 701 (in fig. 3, the front mounting portion 201, whose sliding groove 701 is provided at the rear side of the mounting portion 201, not specifically shown), and both ends of the connection body 303 are respectively penetrated in the different sliding grooves 701. In fig. 7, the front one of the mounting portions 201 has its rear side surface capable of abutting against the shutter 306, thereby blocking the forward movement of the shutter 306; the rear mounting portion 201 has a front side surface capable of abutting against the shutter 306, thereby preventing the shutter 306 from moving rearward. After the movable cover 102 moves upward and falls down, the movable cover 102 can still be accurately covered on the first exhaust hole 103.
In the case where both ends of the connection body 303 are connected to the two mounting portions 201, respectively, in order to facilitate assembly between the connection body 303 and the mounting portions 201, the mounting portions 201 may be provided to have a certain elasticity, for example, the mounting portions 201 may be made of plastic having elasticity. When the connector 303 is required to be assembled with the mounting portions 201, a user may first break one of the mounting portions 201 apart by hand to slightly increase the distance between the two mounting portions 201, and then insert the connector 303 between the two mounting portions 201.
In some embodiments, the movable cover 102 has a first receiving groove 305, and the first receiving groove 305 may receive a portion of the mounting portion 201. Referring to fig. 3, the baffle 306 includes a constricted portion 302 and a main body portion 304, the main body portion 304 and the connecting body 303 are connected to the constricted portion 302, and an end portion of the main body portion 304 protrudes with respect to the constricted portion 302 and an end portion of the connecting body 303 protrudes with respect to the constricted portion 302 in an axial direction (which may correspond to a front-rear direction in fig. 3) of the connecting body 303; the connecting body 303, the contracting portion 302 and the main body portion 304 together define a first accommodation groove 305. Referring to fig. 2 and 3, after the connector 303 is inserted into the mounting hole 301, a portion of the mounting portion 201 is received in the first receiving groove 305. Providing the first receiving groove 305 can reduce the volume of the movable cover 102, and save the material required by the movable cover 102, thereby saving the cost of the module upper cover 100.
In the above-mentioned embodiment, the movable cover 102 covers the first exhaust hole 103 mainly by its own weight. For the module upper cover 100 in which the movable cover 102 is rotatably connected to the cover plate 101, if the rotation range of the movable cover 102 is not restricted, the movable cover 102 may be pushed open by the gas to be discharged to an angle that cannot be reset by the gravity of the movable cover 102 itself. To ensure that the movable cover 102 can be reset, the range of rotation of the movable cover 102 may be restricted. For example, referring to fig. 13, in some embodiments, a battery pack 1301 includes a plurality of battery modules 800, the battery pack 1301 includes a case 1302, and the plurality of battery modules 800 are each housed in the case 1302; referring to fig. 14, the case 1302 of the battery pack 1301 includes a top plate 1401 (the top plate 1401 is omitted in fig. 13), and the top plate 1401 can abut against the movable cover 102, thereby preventing the movable cover 102 from being rotated upward by an excessive angle.
Referring to fig. 1 and 2, in some embodiments, the placement directions of two adjacent movable covers 102 may be reversed to allow for a larger operating space for the installation of the movable covers 102. Specifically, if one end of the movable cover 102 to be connected to the mounting portion 201 is referred to as a connection end, and one end of the movable cover 102 distant from the connection end is referred to as a movable end, the connection end of any one movable cover 102 is disposed adjacent to the movable end of the other movable cover 102 with respect to two adjacent movable covers 102. For example, taking fig. 1 or fig. 2 as an example, for a certain movable cover 102, the left end is used for connecting with the mounting portion 201, the left end of the movable cover 102 is the connecting end, and the right end of the movable cover 102 is the movable end; correspondingly, the left end of one movable cover 102 adjacent to the movable cover 102 is a movable end, and the right end is a connecting end.
In this arrangement, the distance between the mounting portions 201 for connecting with different movable covers 102 is large along the arrangement direction of the movable covers 102, so that a large operation space can be left for the hands of the user, and the user can conveniently mount or dismount the movable covers 102.
The invention also provides a battery module 800, the battery module 800 comprises a module housing 503 and a plurality of batteries 401, wherein the module housing 503 comprises a module lower housing 501 and the module upper cover 100 in any embodiment. Referring to fig. 5 or 6, the module lower case 501 has a first receiving cavity 502, and the module upper cover 100 is coupled to the module lower case 501 and covers the first receiving cavity 502. Specifically, the module upper cover 100 and the module lower shell 501 may be connected by screws, the module upper cover 100 and the module lower shell 501 may be bonded by glue, and the module upper cover 100 and the module lower shell 501 may be connected by clamping; the manner of connection between the module upper cover 100 and the module lower case 501 is not specifically described herein. The battery 401 is accommodated in the first accommodating chamber 502, and the first exhaust hole 103 communicates with the first accommodating chamber 502. The gas inside the battery 401 is discharged into the first accommodating chamber 502 through the explosion-proof valve 404 of the battery 401, and after the air pressure in the first accommodating chamber 502 is sufficiently large, the gas in the first accommodating chamber 502 is discharged through the first exhaust hole 103.
The battery module 800 further includes a connection sheet 1001 for connecting a plurality of batteries 401 in the battery module 800 in series or in parallel, and an electrical isolation plate 801 mainly for mounting the connection sheet 1001.
Referring to fig. 4, top cap 403 of battery 401 further includes a post 407, post 407 including a positive post 405 and a negative post 406. Referring to fig. 8 and 9, an electrical separator 801 is placed on top of the battery 401, and the positive and negative posts 405 and 406 of the battery 401 pass through the electrical separator 801 from bottom to top. Referring to fig. 9, the electrical isolation plate 801 has a positioning hole 901, the positive electrode post 405 and the negative electrode post 406 are disposed in the positioning hole 901, and the connection piece 1001 may also be disposed in the positioning hole 901. The connection piece 1001 is provided as a conductor (for example, the connection piece 1001 is provided as an aluminum sheet), and the top surface of the positive electrode post 405 and the top surface of the negative electrode post 406 may be welded (or bonded by conductive adhesive) to the connection piece 1001.
The connection sheet 1001 is provided in plurality, and the connection sheet 1001 can connect a plurality of batteries 401 in series. For example, with reference to fig. 9 and 11, a part of the connection piece 1001 may be connected to one positive electrode post 405 and one negative electrode post 406 at the same time, and the positive electrode post 405 and the negative electrode post 406 connected to the same connection piece 1001 respectively belong to different batteries 401. Accordingly, the arrangement of two adjacent batteries 401 is opposite. For example, referring to fig. 11, for a certain cell 401, its positive electrode post 405 is on the right side and its negative electrode post 406 is on the left side; and the adjacent cell 401 has its positive electrode 405 on the left side and its negative electrode 406 on the right side. While one end of the battery module 800 has a connection sheet 1001 connected only to the positive electrode post 405, the other end of the battery module 800 has a connection sheet 1001 connected only to the negative electrode post 406, and the two connection sheets 1001 can be connected to conductive members (cables, copper bars, etc.) outside the battery module 800, thereby outputting electric power of the battery module 800.
The connection sheet 1001 may also connect a plurality of batteries 401 in parallel. For example, referring to fig. 12, two tabs 1001 are provided in total, and negative electrode tabs 406 of all batteries 401 are connected to one tab 1001, and positive electrode tabs 405 of all batteries 401 are connected to the other tab 1001. Both of the connection tabs 1001 are used to connect with conductive members outside the battery module 800, thereby outputting electric power of the battery module 800.
Referring to fig. 9 and 10, the electrical isolation plate 801 may have a second vent hole 902, the explosion proof valve 404 being opposite to the second vent hole 902, the second vent hole 902 being opposite to the first vent hole 103. In this arrangement, the gas flowing out of the explosion-proof valve 404 may sequentially pass through the second vent 902 and the first vent 103 from bottom to top, so as to flow out of the battery module 800, and the gas has a short discharge path and a low tortuosity, which is beneficial to reducing the exhaust resistance of the battery module 800 and enabling the gas to be rapidly discharged out of the battery module 800.
It should be noted that, referring to fig. 1, the cover plate 101 further has a second accommodating groove 104, where the second accommodating groove 104 is used for accommodating an output electrode seat or a connector (not specifically shown) of the battery module 800, and after the battery module 800 is assembled, the second accommodating groove 104 is plugged by the output electrode seat or the connector, and gas inside the battery module 800 is not discharged through the second accommodating groove 104.
The present invention also provides a battery pack 1301, where the battery pack 1301 includes a plurality of the battery modules 800 in any of the above embodiments, and a case 1302. Referring to fig. 13, the case 1302 has a second receiving chamber 1303 and a third exhaust hole 1304, the third exhaust hole 1304 communicates with the second receiving chamber 1303, and the battery module 800 is received in the second receiving chamber 1303. The gas discharged from the battery module 800 is discharged into the second receiving chamber 1303, and then is discharged to the outside of the battery pack 1301 through the third exhaust hole 1304, so as to prevent the battery pack 1301 from being damaged or a safety accident from being caused by the accumulation of high-temperature gas inside the case 1302.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. Module upper cover, its characterized in that includes:
a cover plate for covering the top of the battery, the cover plate having at least one first vent hole;
the movable covers are movably connected with the cover plate, are arranged on the upper side of the cover plate, cover and seal at least one first exhaust hole, and can be pushed by gas below the movable covers to move upwards so as to release the sealing of the movable covers on the first exhaust holes;
the movable cover comprises a baffle and a connector, the baffle covers the first exhaust hole, the baffle comprises a shrinkage portion and a main body portion, the main body portion and the connector are respectively connected to two sides of the shrinkage portion, the movable cover is axially arranged along the connector, the end portion of the main body portion protrudes relative to the shrinkage portion, the end portion of the connector protrudes relative to the shrinkage portion, so that the connector, the main body portion and the shrinkage portion jointly define a first accommodating groove, the cover plate comprises a covering portion and at least one mounting portion, a part of the mounting portion is accommodated in the first accommodating groove, and one end, close to the connector, of the baffle bends towards a direction away from the covering portion.
2. The module upper cover according to claim 1, wherein the first exhaust hole is provided in the cover portion; the mounting part is connected to the top of the covering part and protrudes relative to the top of the covering part, and is provided with a mounting hole;
the baffle covers the first exhaust hole, one end of the baffle is connected with the side part of the connecting body, and the end part of the connecting body is rotatably arranged in the mounting hole.
3. The module upper cover according to claim 1, wherein the first exhaust hole is provided in the cover portion; the mounting part is connected to the top of the covering part and protrudes relative to the top of the covering part, and the mounting part is provided with a sliding groove;
the baffle covers the first exhaust hole, one end of the baffle is connected with the side part of the connecting body, the connecting body is slidably arranged in the sliding groove, and the connecting body can slide up and down along the sliding groove.
4. A module cover according to claim 2 or 3, wherein each of the connection bodies is connected to two of the mounting portions; for the two mounting portions connected with the same connecting body, one side of any one mounting portion facing the other mounting portion can be abutted against the baffle plate so as to prevent the baffle plate from moving along the axial direction of the connecting body.
5. The module upper cover according to claim 1, wherein a plurality of movable covers are provided, one end of each movable cover, which is used for being connected with the cover plate, is a connecting end, and one end of each movable cover, which is far away from the connecting end, is a movable end;
and for two adjacent movable covers along the arrangement direction of the plurality of movable covers, the movable end of one movable cover is adjacent to the connecting end of the other movable cover.
6. The modular upper cover of claim 1, wherein the cover plate and the movable cover are each made of an insulating material.
7. The battery module, its characterized in that includes:
a module case including a module lower case having a first receiving chamber, and a module upper cover according to any one of claims 1 to 6, the module upper cover being connected to the module lower case to cover the first receiving chamber, the first exhaust hole being in communication with the first receiving chamber;
the battery is provided with a plurality of batteries, the batteries are accommodated in the first accommodating cavity, the top of the battery is provided with an explosion-proof valve, and the explosion-proof valve is opposite to the first exhaust hole.
8. The battery module of claim 7, further comprising:
the connecting pieces are arranged as conductors and are electrically connected with the batteries so as to enable the batteries in the battery module to be connected in series or in parallel;
the electric isolation plate is insulated, the connecting piece is installed in the electric isolation plate, the electric isolation plate set up in the first holding chamber, just the electric isolation plate cover in the top of battery, the electric isolation plate has the second exhaust hole, the second exhaust hole with explosion-proof valve is relative, just the first exhaust hole with the second exhaust hole is relative.
9. A battery pack, comprising:
the box body is internally provided with a second accommodating cavity and a third exhaust hole, and the third exhaust hole is communicated with the second accommodating cavity;
the battery module according to claim 7 or 8, wherein a plurality of the battery modules are provided, and a plurality of the battery modules are accommodated in the second accommodation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210333791.4A CN114678639B (en) | 2022-03-31 | 2022-03-31 | Module upper cover, battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210333791.4A CN114678639B (en) | 2022-03-31 | 2022-03-31 | Module upper cover, battery module and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114678639A CN114678639A (en) | 2022-06-28 |
| CN114678639B true CN114678639B (en) | 2023-07-14 |
Family
ID=82076640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210333791.4A Active CN114678639B (en) | 2022-03-31 | 2022-03-31 | Module upper cover, battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114678639B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2250972A1 (en) * | 2022-08-17 | 2024-02-18 | Cuberg Inc | An enclosure |
| CN116417763B (en) * | 2023-05-31 | 2023-12-22 | 深圳海辰储能控制技术有限公司 | Energy storage device, power utilization system and energy storage system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016062757A (en) * | 2014-09-18 | 2016-04-25 | 三菱重工業株式会社 | Battery module |
| CN210110904U (en) * | 2019-09-19 | 2020-02-21 | 宁德时代新能源科技股份有限公司 | Lower box, battery package and vehicle |
| CN211555974U (en) * | 2019-12-31 | 2020-09-22 | 江苏境具净环保科技有限公司 | Battery assembly |
| CN212874692U (en) * | 2020-08-17 | 2021-04-02 | 湖北亿纬动力有限公司 | Power battery explosion-proof valve and power battery |
| CN215816172U (en) * | 2021-06-29 | 2022-02-11 | 恒大新能源技术(深圳)有限公司 | Battery module and battery pack |
-
2022
- 2022-03-31 CN CN202210333791.4A patent/CN114678639B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016062757A (en) * | 2014-09-18 | 2016-04-25 | 三菱重工業株式会社 | Battery module |
| CN210110904U (en) * | 2019-09-19 | 2020-02-21 | 宁德时代新能源科技股份有限公司 | Lower box, battery package and vehicle |
| CN211555974U (en) * | 2019-12-31 | 2020-09-22 | 江苏境具净环保科技有限公司 | Battery assembly |
| CN212874692U (en) * | 2020-08-17 | 2021-04-02 | 湖北亿纬动力有限公司 | Power battery explosion-proof valve and power battery |
| CN215816172U (en) * | 2021-06-29 | 2022-02-11 | 恒大新能源技术(深圳)有限公司 | Battery module and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114678639A (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114678639B (en) | Module upper cover, battery module and battery pack | |
| CN110518174B (en) | Battery, battery module, battery pack and electric vehicle | |
| KR20220069038A (en) | Lithium-ion batteries, battery modules, battery packs, and automobiles | |
| EP4050709A1 (en) | Battery, battery module, battery pack and electric vehicle | |
| CN112952244B (en) | Battery, battery module, battery pack and electric vehicle | |
| JP2009530777A (en) | Soft package lithium ion power battery module | |
| US20220407186A1 (en) | Battery, battery module, battery pack, and automobile | |
| CN216529007U (en) | Battery cell, battery and consumer | |
| WO2021098760A1 (en) | Battery, battery module, battery pack, and automobile | |
| CN216389663U (en) | Battery pack, battery pack box body group, power utilization device and power storage cabinet | |
| KR102005489B1 (en) | Battery pack | |
| CN1317844A (en) | Non-aqueous electrolyte secondary battery and mfg. method | |
| CN112259872B (en) | Battery, electric equipment and manufacturing method of battery | |
| CN112838331A (en) | Battery, battery module, battery pack and electric vehicle | |
| WO2022098027A1 (en) | Secondary battery module, and secondary battery pack and vehicle comprising same | |
| KR101514426B1 (en) | Connector, battery pack having the same and assembling method thereof | |
| CN111133604A (en) | Battery pack | |
| KR20010046921A (en) | Lithium polymer battery pack | |
| CN220368114U (en) | Battery cell assembly and battery | |
| CN207719253U (en) | Steel shell integrated cladding battery | |
| CN220382254U (en) | Lithium iron phosphate battery for small-sized communication | |
| CN220569776U (en) | Battery monomer, battery package and power consumption device | |
| CN217507586U (en) | Battery cell and battery comprising same | |
| KR20060027277A (en) | Pack case for secondary battery | |
| CN218005070U (en) | Battery and battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |