CN116759722B - Battery frame structure, battery pack and energy storage cabinet - Google Patents
Battery frame structure, battery pack and energy storage cabinet Download PDFInfo
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- CN116759722B CN116759722B CN202311047518.6A CN202311047518A CN116759722B CN 116759722 B CN116759722 B CN 116759722B CN 202311047518 A CN202311047518 A CN 202311047518A CN 116759722 B CN116759722 B CN 116759722B
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- battery
- battery frame
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- frames
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- 238000004146 energy storage Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H01M50/233—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
- H01M50/242—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 against vibrations, collision impact or swelling
-
- 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
- H01M50/244—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
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
-
- 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
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention belongs to the technical field of energy storage, and particularly relates to a battery frame structure, a battery assembly and an energy storage cabinet. The battery frame structure comprises a first elastic component and at least two layers of battery frames which are sequentially stacked, and each layer of battery frame is provided with an accommodating space for accommodating a single battery; and between two adjacent layers of battery frames, the upper layer of battery frames are arranged on the lower layer of battery frames through the first elastic component. According to the invention, the first elastic component enables the adjacent two battery frames to be flexibly connected, and has a damping and buffering function, so that the safety of the battery module is improved, and the service life of the battery module is prolonged.
Description
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a battery frame structure, a battery assembly and an energy storage cabinet.
Background
The energy storage electric cabinet is taken as an important component part in a battery energy storage system and has been widely applied to the fields of new energy, smart power grids, energy saving technology and the like. The battery in the energy storage electric cabinet is charged and discharged, so that the effects of peak clipping and valley filling, improving the electric energy quality, acting as a standby power supply, adjusting the frequency, participating in the construction of the intelligent power grid and the like are achieved.
In the prior art, an energy storage electric cabinet comprises a plurality of battery components, wherein the battery components are stacked in the electric cabinet; however, the existing multi-layer battery modules are generally in rigid contact, so that accidents such as collision between the upper and lower layers of battery modules easily occur in the carrying process of the energy storage electric cabinet, and the service life and safety of the battery assembly are affected.
Disclosure of Invention
Aiming at the technical problem that an upper layer battery module and a lower layer battery module of a battery assembly are easy to collide in the prior art, the invention provides a battery frame structure, a battery assembly and an energy storage cabinet.
In view of the above technical problems, an embodiment of the present invention provides a battery frame structure, including a first elastic component and at least two layers of battery frames stacked in sequence, where each layer of battery frame is provided with an accommodating space for accommodating a single battery;
and between two adjacent layers of battery frames, the upper layer of battery frames are arranged on the lower layer of battery frames through the first elastic component.
Optionally, each layer of the battery frame includes a bottom plate assembly and at least two end plates mounted on the bottom plate assembly, and the accommodating space is enclosed between the end plates of the same layer of the battery frame and the bottom plate assembly;
and the bottom plate component in the upper layer of the battery frame is arranged on the end plate in the lower layer of the battery frame through the first elastic component between two adjacent layers of the battery frames.
Optionally, the bottom plate assembly includes a plurality of bottom plates arranged in parallel and at intervals on the bottom surface of the accommodating space, and the first elastic assembly includes a plurality of first elastic members;
and each bottom plate in the upper layer of the battery frames is connected with each end plate in the lower layer of the battery frames through at least one first elastic piece.
Optionally, in the same layer of the battery frame, a first fixed hole group is arranged on the end face, away from the end plate, of each bottom plate, and a second fixed hole group is arranged on the end face, away from the bottom plate, of each end plate, corresponding to the first fixed hole group;
and one end of the first elastic piece is inserted into the first fixing hole group of the battery frame positioned at the upper layer, the other end of the first elastic piece is inserted into the second fixing hole group of the battery frame positioned at the lower layer, and the first elastic piece is connected between the bottom plate of the battery frame at the upper layer and the end plate of the battery frame at the lower layer.
Optionally, the number of the first elastic members disposed between the bottom plate assembly in the M-th layer of the battery frame and the end plate in the m+1-th layer of the battery frame is:
X=M×N
wherein:
x is the number of the first elastic pieces;
m is the number of layers of the upper layer of the battery frame in the sequence from top to bottom;
n is the total layer number of the battery frame; n is a natural number greater than or equal to 2.
Optionally, when the first elastic member is in an uncompressed state, a length of the first elastic member between the end plate and the bottom plate assembly is:；
wherein Y is the length of the first resilient element between the end plate and the bottom plate assembly;
g is the weight of each layer of the battery frame and the single batteries installed in the battery frame;
k is the elastic coefficient of the first elastic piece
And x is the deformation displacement of the first elastic piece.
Optionally, in the same layer of the battery frame, a guide post is arranged at one end of the end plate, which is far away from the bottom plate assembly, and a guide groove is arranged on the bottom plate assembly;
and the guide posts of the lower-layer battery frames are inserted into the guide grooves of the upper-layer battery frames between two adjacent layers of battery frames.
Optionally, the battery frame structure further includes a support frame provided with a mounting space in which all the battery frames are stacked and mounted.
Optionally, the battery frame structure further includes a second elastic member, one end of the second elastic member is connected to an outer sidewall of the battery frame, and the other end of the second elastic member is connected to the support frame.
Optionally, a first mounting groove is formed in the outer side wall of the battery frame, a second mounting groove communicated with the mounting space is further formed in the supporting frame, and two opposite ends of the second elastic piece are inserted into the first mounting groove and the second mounting groove respectively.
Optionally, the supporting frame comprises a base, a top plate and a plurality of parallel and spaced upright posts, and the upright posts are connected between the base and the top plate; the base, the top plate and the upright post enclose the installation space; the second mounting groove is formed in the upright post.
Optionally, the outer side wall of each layer of the battery frame is connected with the supporting frame through the second elastic piece;
when the second elastic piece is in a non-compression state, the length of the second elastic piece between the outer side wall of the battery frame and the supporting frame is equal to the theoretical moving distance divided by the total number of the second elastic pieces corresponding to the battery frame; the theoretical moving distance is the distance that the battery frame is driven to move laterally by the expansion force when the single battery works under the preset working condition.
Another embodiment of the present invention further provides a battery assembly, including the above-mentioned battery frame structure, and at least two unit batteries mounted in the receiving space.
The invention further provides an energy storage cabinet, which comprises the battery assembly.
In the invention, the battery frame structure comprises a first elastic component and at least two layers of battery frames which are sequentially stacked; and between two adjacent layers of battery frames, the upper layer of battery frames are arranged on the lower layer of battery frames through the first elastic component. When the battery cell is installed in the accommodation space of the battery frame, the battery cell and the battery frame together form a battery module, a plurality of battery modules are sequentially stacked and installed, the first elastic component enables two adjacent battery frames to be flexibly connected, and the first elastic component has the function of damping and buffering, so that the safety of the battery module is improved, and the service life of the battery module is prolonged.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of a battery frame structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an end plate of a battery frame structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a bottom plate of a battery frame structure according to an embodiment of the present invention;
fig. 4 is a partial enlarged view of a battery frame structure according to an embodiment of the present invention;
fig. 5 is a schematic view showing a structure in which a unit cell is mounted on a cell frame in the present invention;
fig. 6 is a schematic structural view of a battery assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a support frame of a battery assembly according to an embodiment of the present invention;
fig. 8 is a schematic view showing a structure in which a second elastic member of a battery pack according to an embodiment of the present invention is mounted on a column;
fig. 9 is a partial enlarged view of a battery pack according to an embodiment of the present invention;
fig. 10 is a schematic view of a first elastic member provided in an embodiment of the present invention between an upper cell frame and a lower cell frame in an uncompressed state.
Reference numerals in the specification are as follows:
1. a battery frame; 11. a base plate assembly; 111. a bottom plate; 1111. a first fixed hole group; 11111. a first fixing hole; 12. a first elastic component; 121. a first elastic member; 13. an end plate; 131. a second fixed hole group; 1311. a second fixing hole; 132. a first mounting groove; 133. a guide post; 2. a single battery; 3. a battery assembly; 31. a support frame; 311. a base; 312. a top plate; 313. a column; 3131. a second mounting groove; 314. an installation space; 4. and a second elastic member.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.
As shown in fig. 1, 4 and 5, a battery frame structure according to an embodiment of the present invention includes a first elastic component 12 and at least two layers of battery frames 1 stacked in sequence, where each layer of battery frame 1 is provided with an accommodating space for accommodating a single battery 2; it is understood that the first resilient component 12 includes, but is not limited to, a silicone pad, a plastic pad, and the like; the number of the battery frames 1 may be set according to actual demands, for example, the battery frames 1 are provided with 2, 6, 8, 10, etc.; at least one unit cell 2 may be mounted in each layer of the cell frame 1.
Between two adjacent layers of the battery frames 1, the upper layer of the battery frame 1 is mounted on the lower layer of the battery frame 1 through the first elastic component 12. It will be appreciated that the first elastic member 12 is installed between adjacent two of the battery frames 1.
In the present invention, the battery frame structure includes a first elastic member 12 and at least two layers of battery frames 1 stacked in order; between two adjacent layers of the battery frames 1, the upper layer of the battery frame 1 is mounted on the lower layer of the battery frame 1 through the first elastic component 12. When the single battery 2 is installed in the accommodating space of the battery frame 1, the single battery 2 and the battery frame 1 together form a battery module, a plurality of battery modules are sequentially installed in a stacked mode, the first elastic component 12 enables two adjacent battery frames 1 to be in flexible connection, and the first elastic component 12 has the function of damping and buffering, so that the safety of the battery module is improved, and the service life of the battery module is prolonged.
In one embodiment, as shown in fig. 1, each layer of the battery frame 1 includes a bottom plate assembly 11 and at least two end plates 13 mounted on the bottom plate assembly 11, and the accommodating space is defined between the end plates 13 and the bottom plate assembly 11 of the same layer of the battery frame 1; it should be understood that the base plate assembly 11 may be a single base plate 111, or may be a plurality of base plates 111 spaced apart from each other; the number of the end plates 13 may be designed according to practical requirements, for example, 2, 4, etc. end plates 13 are provided. In a specific embodiment, the battery frame 1 includes two end plates 13, where the two end plates 13 are mounted on the bottom plate 111 by the first elastic component 12, and the two end plates 13 are parallel and spaced apart.
Between two adjacent layers of the battery frames 1, the bottom plate assembly 11 in the upper layer of the battery frames 1 is mounted on the end plate 13 in the lower layer of the battery frames 1 through the first elastic assembly 12. It will be appreciated that the first elastic member 12 is installed between the lower surface of the upper base plate member 11 and the upper surface of the lower end plate 13. In this embodiment, the battery frame 1 has a simple structure and low manufacturing cost.
In one embodiment, as shown in fig. 1, the base plate assembly 11 includes a plurality of base plates 111 disposed in parallel and spaced apart on the bottom surface of the accommodating space, and the first elastic assembly 12 includes a plurality of first elastic members 121 disposed in spaced apart relation; as can be appreciated, each of said bottom plates 111 is mounted on said end plate 13 by at least one of said first elastic members 121; the first elastic member 121 includes, but is not limited to, a silica gel pad, a plastic member, etc., and a through hole is formed between two adjacent bottom plates 111, and when a plurality of battery modules are stacked together in a vertical direction, heat dissipation between two adjacent battery modules may be performed through the through hole, etc., thereby ensuring heat dissipation capability between the multi-layered battery modules.
Between two adjacent layers of the battery frames 1, each of the bottom plates 111 of the upper layer of the battery frames 1 and each of the end plates 13 of the lower layer of the battery frames 1 are connected by at least one first elastic member 121. It is to be understood that the first elastic members 121 are installed between the bottom plate 111 of the upper layer and the end plate 13 of the lower layer, and the number of the first elastic members 121 between the bottom plate 111 of the upper layer and the end plate 13 of the lower layer may be set according to actual needs, for example, 1, 4, 8, etc. Further, between the adjacent two battery frames 1, all the bottom plates 111 are mounted on the same end plate 13 through the same number of the first elastic members 121.
In an embodiment, as shown in fig. 1 to fig. 4, in the same layer of the battery frame 1, a first fixing hole set 1111 is disposed on an end surface of each bottom plate 111 facing away from the end plate 13, and a second fixing hole set 131 is disposed on a position corresponding to the first fixing hole set 1111 on the end surface of the end plate 13 facing away from the bottom plate 111; as can be appreciated, each of the second fixing hole groups 131 includes a plurality of second fixing holes 1311 spaced apart from each other; the number of the first fixing hole groups 1111 is equal to the number of the bottom plates 111, and each first fixing hole group 1111 includes a plurality of first fixing holes 11111 arranged at intervals, and at least one first fixing hole 11111 in each first fixing hole 11111 is provided with the first elastic member 121; in a specific embodiment, each of the end plates 13 is provided with N/2 second fixing hole groups 131, N is a total number of layers of the battery frame 1, N is a natural number greater than or equal to 2, the bottom plate assembly 11 includes N/2 bottom plates 111, each bottom plate 111 of an upper layer is mounted on the end plate 13 of a lower layer through at least one first elastic member 121, and the bottom plate assembly 11 of an upper layer is mounted on the end plate 13 through at least N/2 first elastic members 121.
As shown in fig. 10, between two adjacent layers of the battery frames 1, one end (upper end) of the first elastic member 121 is inserted into the first fixing hole group 1111 of the upper layer of the battery frame 1, the other end (lower end) of the first elastic member 121 is inserted into the second fixing hole group 131 of the lower layer of the battery frame 1, and the first elastic member 121 is connected between the bottom plate 111 of the upper layer of the battery frame 1 and the end plate 13 of the lower layer of the battery frame 1. In this embodiment, the upper end of the first elastic member 121 is inserted into the first fixing hole group 1111 of the upper base plate 111, and the lower end of the first elastic member 121 is inserted into the second fixing hole group 131 of the lower end plate 13, thereby improving the convenience of the first elastic member 121 being mounted between the end plate 13 and the base plate 111. The first fixing hole set 1111 includes a plurality of first fixing holes 11111 disposed at intervals, and the second fixing hole set 131 includes a plurality of second fixing holes 1311 disposed at intervals; in the same pair of the first fixing hole set 1111 and the second fixing hole set 131, at least one of the corresponding ends of the first elastic member 121 is inserted into the first fixing hole 11111 of the upper layer and the second fixing hole 1311 of the lower layer, respectively.
In one embodiment, the number of the first elastic members 121 disposed between the bottom plate assembly 11 in the M-th layer of the battery frame 1 and the end plate 13 in the m+1-th layer of the battery frame 1 is:
X=M×N
wherein: x is the number of the first elastic members 121;
m is the number of layers of the upper-layer battery frame 1 in the order from top to bottom; it is understood that the uppermost battery frame 1 is the 1 st layer, and m=a natural number between 1 and 8, and so on.
N is the total number of layers of the battery frame 1; n is a natural number greater than or equal to 2.
In a specific embodiment, the battery frame structure includes 8 layers of the battery frames 1, 8 first elastic members 121 between the first layer of the battery frames 1 and the second layer of the battery frames 1, 16 first elastic members 121 between the second layer of the battery frames 1 and the third layer of the battery frames 1, 24 first elastic members 121 between the third layer of the battery frames 1 and the fourth layer of the battery frames 1, and 32 first elastic members 121 between the fourth layer of the battery frames 1 and the fifth layer of the battery frames 1; that is, in the battery frame structure, the number of the first elastic members 121 is 8, 16, 24, 32, … …, and the like in order from top to bottom. Further, each layer of the battery frame 1 includes M/2 of the bottom plates 111 therein; between two adjacent battery frames 1, each of the bottom plates 111 of an upper layer is mounted on each of the end plates 13 of a lower layer through the same number of the first elastic members 121; the number of the first elastic pieces 121 arranged between the bottom plate 111 in the Mth layer of the battery frame 1 and one end plate 13 in the M+1th layer of the battery frame 1 from top to bottom is M; the number of first elastic members 121 between each of the bottom plates 111 of the first layer and each of the end plates 13 of the second layer is 1, the number of first elastic members 121 between each of the bottom plates 111 of the second layer and each of the end plates 13 of the third layer is 2, the number of first elastic members 121 between each of the bottom plates 111 of the third layer and each of the end plates 13 of the fourth layer is 3, and the number of first elastic members 121 between each of the bottom plates 111 of the fourth layer and each of the end plates 13 of the fifth layer is 4 … …; that is, in the battery frame structure, the number of the first elastic members 121 between each of the end plates 13 of each of the bottom plates 111 is sequentially 1, 2, 3, 4, … … from top to bottom.
In one embodiment, when the first elastic member 121 is in an uncompressed state (i.e., the first elastic member 121 is in a natural state), the length of the first elastic member 121 between the end plate 13 and the bottom plate assembly 11 is:；
wherein Y is the length of the first elastic member 121 between the end plate 13 and the bottom plate assembly 11 (as shown in fig. 10); that is, when the unit batteries 2 are not mounted in the battery frame 1, the length of the first elastic member 121 is between the end plate 13 and the bottom plate assembly 11. It will be appreciated that Y is the natural length of the first elastic member 121 minus the sum of the depths of the first fixing hole 11111 and the second fixing hole 1311.
G is the weight of each layer of the battery frame 1 and the unit cells 2 mounted in the battery frame 1; that is, G is the weight of each battery module, and the emphasis of all the battery modules is the same.
K is the elastic coefficient of the first elastic member 121;
x is the deformation displacement of the first elastic member 121.
The lower battery frame 1 needs to bear the weight of all the battery modules above as the battery modules are stacked, so that the lower battery frame 1 needs to bear a larger weight, however, a greater number of the first elastic members 121 are mounted above the lower battery frame 1 as the number of layers of the battery frames 1 are stacked; in this embodiment, X first elastic members 121 are disposed between the bottom plate assembly 11 in the M-th layer of the battery frame 1 and the end plate 13 in the m+1-th layer of the battery frame 1, and the lengths of the first elastic members 121 between the end plate 13 and the bottom plate assembly 11 are all Y, so that all the battery modules above can drive all the first elastic members 121 below the battery modules to compress by Y, so that two adjacent battery frames 1 are attached together (i.e., all the battery frames 1 stacked up and down are attached together), and all the first elastic members 121 below can absorb the weight of all the battery modules above, so that the battery frames 1 and the single batteries 2 below cannot bear the weight of the battery modules above, and displacement is not easy to occur between the two adjacent battery modules, thereby ensuring the stability of the battery modules.
In one embodiment, as shown in fig. 1 and 2, in the same layer of the battery frame 1, a guide post 133 is disposed at an end of the end plate 13 away from the bottom plate assembly 11, and a guide groove (not shown) is disposed on the bottom plate assembly 11; as will be appreciated, the guide posts 133 are provided at the upper end of the end plate 13 and the guide slots are provided at the bottom of the base plate assembly 11.
Between two adjacent layers of the battery frames 1, the guide posts 133 of the lower layer of the battery frames 1 are inserted into the guide grooves of the upper layer of the battery frames 1. Specifically, when stacking between two adjacent battery frames 1, the guide posts 133 on the lower-layer end plate 13 are inserted into the guide grooves on the upper-layer bottom plate assembly 11, thereby ensuring the accuracy of stacking between two adjacent battery frames 1.
In an embodiment, as shown in fig. 6 and 7, the battery frame structure further includes a support frame 31 provided with a mounting space 314, and all the battery frames 1 are stacked and mounted in the mounting space 314. It is understood that the battery frame 1 may serve as an outer frame of the battery module, and a plurality of the battery modules are stacked and mounted in the mounting space 314 of the outer frame. In this embodiment, the support frame 31 may make a plurality of battery modules into one body, thereby facilitating the installation of the battery modules.
In an embodiment, as shown in fig. 7 to 8, the battery frame structure further includes a second elastic member 4, one end of the second elastic member 4 is connected to the outer sidewall of the battery frame 1, and the other end of the second elastic member 4 is connected to the supporting frame 31 (i.e., the second elastic member 4 is connected between the outer sidewall of the battery frame 1 and the inner sidewall of the installation space 314). As can be appreciated, the second elastic member 4 includes, but is not limited to, a silicone pad, a plastic member, etc., and the second elastic member 4 is installed between the outer sidewall of the end plate 13 and the inner sidewall of the installation space 314; specifically, in the working process of the battery module, the expansion force of the single battery 2 drives the battery frame 1 to move outwards, and the battery frame 1 compresses the second elastic piece 4, so that the second elastic piece 4 absorbs the expansion force generated in the working process of the battery module, the influence of the expansion force on the battery module is reduced, and the stability of the battery module in the supporting frame 31 is guaranteed.
In an embodiment, as shown in fig. 2 and 7, a first mounting groove 132 is formed on the outer sidewall of the battery frame 1, a second mounting groove 3131 is further formed on the supporting frame 31 to communicate with the mounting space 314 (i.e., the second mounting groove 3131 is formed on the inner sidewall of the mounting space 314), and opposite ends of the second elastic member 4 are respectively inserted into the first mounting groove 132 and the second mounting groove 3131. It is to be understood that the shapes of the first and second mounting grooves 132 and 3131 may be designed according to the shape of the second elastic member 4, and opposite ends of the second elastic member 4 are respectively inserted into the first and second mounting grooves 132 and 3131, thereby improving the convenience of mounting the second elastic member 4 between the battery frame 1 and the support frame 31.
In one embodiment, as shown in fig. 7 and 8, the supporting frame 31 includes a base 311, a top plate 312, and a plurality of columns 313 arranged in parallel and spaced apart, wherein the columns 313 are connected between the base 311 and the top plate 312; the base 311, the top plate 312 and the upright 313 enclose the installation space 314; the second mounting groove 3131 is provided on the upright 313. It will be appreciated that the base 311 is mounted at the bottom of all the upright posts 313, the top plate 312 is mounted at the top of the upright posts 313, a plurality of second mounting grooves 3131 are formed on all the upright posts 313 at intervals along the vertical direction, and correspondingly, a plurality of first mounting grooves 132 are formed on the outer walls of all the battery frames 1, and the battery frames 1 are butted with the upright posts 313 by inserting the second elastic members 4 in the first mounting grooves 132 and the second mounting grooves 3131. In this embodiment, the supporting frame 31 has a simple structure and low manufacturing cost.
In the embodiment shown in fig. 7, the supporting frame 31 is formed by splicing the base 311, the top plate 312 and the upright 313, and the base 311, the top plate 312 and the upright 313 define the installation space 314. In another embodiment, the supporting frame 31 may be designed as a box-type structural member, and the installation space 314 is provided inside the supporting frame 31.
In an embodiment, the outer side wall of each layer of the battery frame 1 is connected to the supporting frame 31 through the second elastic member 4.
When the second elastic member 4 is in a non-compressed state (i.e., the unit battery 2 is in a power-off state), the length of the second elastic member 4 between the outer sidewall of the battery frame 1 and the support frame 31 is equal to a theoretical moving distance divided by the total number of the second elastic members 4 corresponding to the battery frame 1; the theoretical moving distance refers to a distance that the battery frame 1 is driven to move laterally by the expansion force when the single battery 2 works under a preset working condition. It can be understood that, in the working engineering of the single battery 2, the single battery 2 will generate an expansion force due to charge and discharge, and the expansion force generated by the single battery 2 will mobilize the end plate 13 to move outwards, so that the end plate 13 will compress the second elastic member 4 towards the upright post 313, and the second elastic member 4 can absorb the displacement of the end plate 13 driven by the single battery 2 due to the maximum expansion force. Further, in each layer of the battery frame 1, a plurality of second elastic members 4 may be disposed between the battery frame 1 and the supporting frame 31, and each of the second elastic members 4 may absorb a portion of the displacement of the end plate 13 driven by the unit battery 2 due to the maximum expansion force, so that all the second elastic members 4 may receive the displacement of the end plate 13 driven by the unit battery 2 due to the maximum expansion force. In this embodiment, by designing the length of the second elastic member 4 between the outer side wall of the battery frame 1 and the inner side wall of the mounting space 314, the second elastic member 4 will absorb the expansion force generated during the operation of the battery module, and meanwhile, the stability of the battery frame 1 mounted in the supporting frame 31 is ensured.
As shown in fig. 6, another embodiment of the present invention further provides a battery assembly 3 including the above-described battery frame structure and at least two unit batteries 2 mounted in the receiving space. As will be appreciated, one unit cell 2 is mounted in the receiving space of each of the battery frames 1, one battery frame 1 and one unit cell 2 constitute one battery module, a plurality of battery modules are mounted in the mounting space 314 of the support frame 31 in a stacked manner in the vertical direction, and a plurality of battery modules and the battery frames 1 constitute a battery assembly 3.
The invention further provides an energy storage cabinet, which comprises the battery assembly.
The above embodiments of the battery frame of the present invention are only examples, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The battery frame structure is characterized by comprising a first elastic component and at least two layers of battery frames which are sequentially stacked, wherein each layer of battery frame is provided with an accommodating space for accommodating a single battery;
between two adjacent layers of battery frames, the upper layer of battery frames are arranged on the lower layer of battery frames through the first elastic component; the first elastic component comprises a plurality of first elastic pieces;
each layer of the battery frame comprises a bottom plate assembly and at least two end plates arranged on the bottom plate assembly, and the accommodating space is enclosed between the end plates of the same layer of the battery frame and the bottom plate assembly;
the bottom plate component in the upper layer of the battery frame is arranged on the end plate in the lower layer of the battery frame through the first elastic component between two adjacent layers of the battery frames;
the number of the first elastic pieces arranged between the bottom plate component in the battery frame of the M layer and the end plate in the battery frame of the M+1 layer is:
X＝M×N
wherein: x is the number of the first elastic pieces;
m is the number of layers of the upper layer of the battery frame in the sequence from top to bottom;
n is the total layer number of the battery frame; n is a natural number greater than or equal to 2;
the battery frame structure further comprises a supporting frame provided with an installation space, and all the battery frames are stacked and installed in the installation space;
the battery frame structure further comprises a second elastic piece, one end of the second elastic piece is connected with the outer side wall of the battery frame, and the other end of the second elastic piece is connected with the supporting frame.
2. The battery frame structure of claim 1, wherein the bottom plate assembly includes a plurality of bottom plates disposed in parallel and spaced apart relation on the bottom surface of the receiving space;
and each bottom plate in the upper layer of the battery frames is connected with each end plate in the lower layer of the battery frames through at least one first elastic piece.
3. The battery frame structure according to claim 2, wherein in the same layer of the battery frame, a first fixing hole group is arranged on an end face of each bottom plate, which faces away from the end plate, and a second fixing hole group is arranged on the end face of each end plate, which faces away from the bottom plate, at a position corresponding to the first fixing hole group;
and one end of the first elastic piece is inserted into the first fixing hole group of the upper battery frame, the other end of the first elastic piece is inserted into the second fixing hole group of the lower battery frame, and the first elastic piece is connected between the bottom plate of the upper battery frame and the end plate of the lower battery frame.
4. The battery frame structure of claim 1, wherein the length of the first resilient member between the end plate and the bottom plate assembly when the first resilient member is in an uncompressed state is:
wherein Y is the length of the first resilient element between the end plate and the bottom plate assembly;
g is the weight of each layer of the battery frame and the single batteries installed in the battery frame;
k is the elastic coefficient of the first elastic piece;
and x is the deformation displacement of the first elastic piece.
5. The battery frame structure according to claim 1, wherein in the same layer of the battery frame, a guide post is arranged at one end of the end plate, which is far away from the bottom plate assembly, and a guide groove is arranged on the bottom plate assembly;
and the guide posts of the lower-layer battery frames are inserted into the guide grooves of the upper-layer battery frames between two adjacent layers of battery frames.
6. The battery frame structure according to claim 1, wherein a first mounting groove is provided on an outer side wall of the battery frame, a second mounting groove communicating with the mounting space is further provided on the support frame, and opposite ends of the second elastic member are inserted into the first mounting groove and the second mounting groove, respectively.
7. The battery frame structure of claim 6, wherein the support frame comprises a base, a top plate, and a plurality of posts arranged in parallel and spaced apart relation, the posts being connected between the base and the top plate; the base, the top plate and the upright post enclose the installation space; the second mounting groove is formed in the upright post.
8. The battery frame structure according to claim 1, wherein an outer side wall of each layer of the battery frame is connected to the support frame through the second elastic member;
when the second elastic piece is in a non-compression state, the length of the second elastic piece between the outer side wall of the battery frame and the supporting frame is equal to the theoretical moving distance divided by the total number of the second elastic pieces corresponding to the battery frame; the theoretical moving distance is the distance that the battery frame is driven to move laterally by the expansion force when the single battery works under the preset working condition.
9. A battery assembly comprising the battery frame structure according to any one of claims 1 to 8, and at least two unit cells mounted in the receiving space.
10. An energy storage cabinet comprising the battery assembly of claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311047518.6A CN116759722B (en) | 2023-08-21 | 2023-08-21 | Battery frame structure, battery pack and energy storage cabinet |
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| CN202311047518.6A CN116759722B (en) | 2023-08-21 | 2023-08-21 | Battery frame structure, battery pack and energy storage cabinet |
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| CN116759722B true CN116759722B (en) | 2024-02-27 |
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| CN209981308U (en) * | 2019-05-29 | 2020-01-21 | 宁德时代新能源科技股份有限公司 | Battery module frame and battery module |
| CN216597807U (en) * | 2021-12-28 | 2022-05-24 | 东莞新能安科技有限公司 | Battery module and electric equipment |
| CN218632271U (en) * | 2022-09-09 | 2023-03-14 | 比亚迪股份有限公司 | Battery package protective structure, battery package and vehicle |
| WO2023043099A1 (en) * | 2021-09-17 | 2023-03-23 | 주식회사 엘지에너지솔루션 | Battery module and battery pack including same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8999557B2 (en) * | 2010-04-21 | 2015-04-07 | Samsung Sdi Co., Ltd. | Battery pack with elastic frame |
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|---|---|---|---|---|
| CN103904254A (en) * | 2014-02-25 | 2014-07-02 | 江苏华东锂电技术研究院有限公司 | Battery module |
| CN205609622U (en) * | 2016-04-12 | 2016-09-28 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN209981308U (en) * | 2019-05-29 | 2020-01-21 | 宁德时代新能源科技股份有限公司 | Battery module frame and battery module |
| WO2023043099A1 (en) * | 2021-09-17 | 2023-03-23 | 주식회사 엘지에너지솔루션 | Battery module and battery pack including same |
| CN216597807U (en) * | 2021-12-28 | 2022-05-24 | 东莞新能安科技有限公司 | Battery module and electric equipment |
| CN218632271U (en) * | 2022-09-09 | 2023-03-14 | 比亚迪股份有限公司 | Battery package protective structure, battery package and vehicle |
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| CN116759722A (en) | 2023-09-15 |
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