Battery module housing and battery module

Abstract

The present invention discloses a battery module housing and a battery module, wherein the battery module housing has a first side plate and a second side plate which are arranged opposite to each other at intervals, a plurality of accommodating cavities for accommodating battery cells are arranged between the first side plate and the second side plate, a plurality of card slots are arranged at intervals on the outer side of the first side plate, and a card block which is arranged in alignment with the card slot and is used to engage with the card slot of another battery module housing is arranged on the outer side of the second side plate. The battery module housing provided by the present invention realizes a detachable connection between the battery module housings through the engagement of the card slots and the card blocks, thereby flexibly controlling the number of battery cells, making the battery module housing more flexible and convenient to use in practical applications.

Description

Technical Field

[0001] The present invention relates to the technical field of battery equipment, and in particular to a battery module shell and a battery module using the battery module shell. Background Art

[0002] With the development of society and the deterioration of the environment, energy storage devices are increasingly used in people's lives. Energy storage batteries are battery modules composed of battery cells connected in series or in series and parallel. Battery modules are widely used due to their advantages such as good scalability and easy installation. Battery modules usually have a shell to accommodate battery cells. In order to obtain more electrical energy, people often need to connect multiple shells together to put in more battery cells to obtain more electrical energy. However, the existing technology usually fixes the shells together, and people cannot flexibly increase or decrease the number of battery cells according to actual conditions, which is inconvenient to use. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a battery module housing to solve the problem that the existing battery module cannot flexibly increase or decrease the number of battery cells according to actual conditions; the second object of the present invention is to provide a battery module, which uses the battery module housing as described above.

[0004] One of the purposes of the present invention is achieved by the following technical solution:

[0005] A battery module shell comprises a first side plate and a second side plate which are arranged opposite to each other at an interval, a plurality of accommodating cavities for accommodating battery cells are arranged between the first side plate and the second side plate, a plurality of slots are arranged on the outer side of the first side plate, and a card block is arranged on the outer side of the second side plate, which is arranged in alignment with the slot and is used to engage with the slot of another battery module shell.

[0006] Furthermore, each of the card blocks includes a connecting portion and a locking portion, the two opposite sides of the connecting portion are respectively connected to the second side panel and the locking portion, and the side of the locking portion close to the second side panel is provided with an inclined surface inclined relative to the second side panel, and the shape of the card slot is adapted to the shape of the card block.

[0007] Furthermore, the battery module housing includes an upper shell and a lower shell connected to the bottom of the upper shell by screws, the first side plate of the upper shell and / or the first side plate of the lower shell are provided with a plurality of the card slots, and the second side plate of the upper shell and / or the second side plate of the lower shell are provided with a plurality of the card blocks.

[0008] Furthermore, the upper shell is provided with a plurality of first cavities at intervals, the lower shell is provided with second cavities whose number is the same as the number of the first cavities and which are respectively positioned vertically opposite to the first cavities, the first cavities and the second cavities are arranged in a plurality of rows and columns, and each first cavity and a second cavity located directly below it are combined to form the receiving cavity.

[0009] Further, the cross-sectional area of ​​the top of the first cavity is smaller than the cross-sectional area of ​​the bottom of the first cavity, and the cross-sectional shape of the top of the first cavity is circular, and the cross-sectional shape of the bottom is square, and the cross-sectional area of ​​the top of the second cavity is larger than the cross-sectional area of ​​the bottom of the second cavity, and the cross-sectional shape of the top of the second cavity is square, and the cross-sectional shape of the bottom is circular.

[0010] Further, a plurality of positioning posts extending upward are provided at intervals on the top of the upper shell, a nut for installing the battery management system is provided in each of the positioning posts, and a positioning hole is provided at the bottom of the lower shell, which is arranged in alignment with the positioning post and is used to cooperate with the positioning post of the other upper shell; and / or,

[0011] The top of the upper shell and the bottom of the lower shell are both provided with a plurality of protrusions at intervals for engaging with the connection holes on the nickel strip.

[0012] Furthermore, the battery module housing is provided with a mounting hole for mounting an inverter board.

[0013] Furthermore, the battery module housing also includes a sleeve and a screw, the sleeve is detachably mounted in the mounting hole, and the screw passes through the inverter board and is connected to the sleeve to fix the inverter board on the sleeve.

[0014] Furthermore, the first side plate and / or the second side plate is provided with a mounting plate for mounting the battery module housing to an external device, and the mounting plate is penetrated by a through hole for fasteners to pass through.

[0015] The second object of the present invention is achieved by adopting the following technical solution:

[0016] A battery module comprises a battery cell assembly, a nickel strip assembly and at least one battery module shell as described above, wherein the battery cell assembly comprises a plurality of battery cells, the battery cells are accommodated in the accommodation cavity of the battery module shell, and the nickel strip assembly is fixed to the top and bottom of the battery module shell and is electrically connected to the battery cells.

[0017] Compared with the prior art, the beneficial effect of the present invention lies in: by setting a card slot on the first side panel and setting a card block on the second side panel, the card block can cooperate with the card slot of another battery module shell, thereby realizing a detachable connection between the battery module shells. Therefore, according to actual needs, the number of battery module shells can be increased or decreased accordingly, thereby achieving the effect of flexibly controlling the number of battery cells, making the battery module using the battery module shell more flexible and convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a battery module housing provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of assembling three battery module housings provided in an embodiment of the present invention;

[0020] Figure 3 for Figure 1 An exploded schematic diagram of a battery module housing is shown in FIG.

[0021] Figure 4 for Figure 1 A schematic diagram of the structure from another angle;

[0022] Figure 5 for Figure 4 A partial enlarged schematic diagram in the middle.

[0023] In the figure: 100, battery module housing; 10, first side plate; 20, second side plate; 11, slot; 21, block; 211, connection portion; 212, positioning portion; 213, inclined surface; 30, upper shell; 40, lower shell; 31, first cavity; 41, second cavity; 32, positioning column; 42, positioning hole; 33, mounting hole; 43, protrusion; 50, mounting plate; 51, through hole; 60, sleeve; 70, screw. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside, top, bottom...) are only used to explain the relative position relationship between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0027] like Figure 1-5 As shown, a battery module housing 100 provided by an embodiment of the present invention has a first side plate 10 and a second side plate 20 which are arranged opposite to each other at intervals, a plurality of accommodating cavities for accommodating battery cells are arranged at intervals between the first side plate 10 and the second side plate 20, a plurality of card slots 11 are arranged at intervals on the outer side of the first side plate 10, and a card block 21 which is arranged in alignment with the card slot 11 and is used to engage with the card slot 11 of another battery module housing 100 is arranged on the outer side of the second side plate 20. In this design, by arranging the card slot 11 on the first side plate 10 and the card block 21 on the second side plate 20, the card block 21 can engage with the card slot 11 of another battery module housing 100, thereby realizing a detachable connection between the battery module housings 100, so that people can increase or decrease the number of battery module housings 100 accordingly according to actual needs, thereby achieving the effect of flexibly controlling the number of battery cells, and facilitating people's use. At the same time, by arranging the receiving cavities at intervals on the battery module housing 100, when a battery cell fails, it will not affect the normal operation of other battery cells, thereby improving the reliability of the battery module using the battery module housing 100. Specifically, in this embodiment, the battery module housing 100 is made of plastic material.

[0028] Preferably, each block 21 includes a connecting portion 211 and a positioning portion 212, and opposite sides of the connecting portion 211 are respectively connected to the second side plate 20 and the positioning portion 212, and a side of the positioning portion 212 close to the second side plate 20 is provided with an inclined surface 213 inclined relative to the second side plate 20, and the shape of the card slot 11 is adapted to the shape of the block 21. In this design, by setting the block 21 as a connecting portion 211 and a positioning portion 212, and providing an inclined surface 213 on a side of the positioning portion 212 close to the second side plate 20, the shape of the card slot 11 is adapted to the shape of the block 21, so that the inclined surface 213 can play a guiding role, facilitating the insertion of the block 21 into the card slot 11, thereby facilitating the disassembly and assembly of the battery module housing 100.

[0029] Preferably, the battery module housing 100 includes an upper housing 30 and a lower housing 40 connected to the bottom of the upper housing 30 by screws, and the first side plate 10 of the upper housing 30 and / or the first side plate 10 of the lower housing 40 are provided with a plurality of card slots 11, and the second side plate 20 of the upper housing 30 and / or the second side plate 20 of the lower housing 40 are provided with a plurality of card blocks 21. Specifically, in this embodiment, the first side plate 10 of the upper housing 30 and the first side plate 10 of the lower housing 40 are provided with card slots 11, and the second side plate 20 of the upper housing 30 and the second side plate 20 of the lower housing 40 are provided with card blocks 21, so that the stability between the battery module housing 100 is enhanced. It can be understood that the card slots 11 are only provided on the first side plate 10 of the upper housing 30 or the first side plate 10 of the lower housing 40, and the card blocks 21 are only provided on the second side plate 20 of the upper housing 30 or the second side plate 20 of the lower housing 40.

[0030] Preferably, in this embodiment, the upper shell 30 and the lower shell 40 are connected by self-tapping screws. In this way, since it does not need to be used with nuts, it is convenient to connect the upper shell 30 and the lower shell 40, and also saves production costs. Of course, in actual applications, the upper shell 30 and the lower shell 40 can also be connected by other mechanical means, or they can be directly glued and fixed.

[0031] Preferably, in this embodiment, four card slots 11 are provided on the first side plate 10 of the upper shell 30 and the first side plate 10 of the lower shell 40, and four card blocks 21 are provided on the second side plate 20 of the upper shell 30 and the second side plate 20 of the lower shell 40. This design further strengthens the stability between the battery module housings 100. Of course, in actual applications, the number of card slots 11 on the first side plate 10 of the upper shell 30 and the first side plate 10 of the lower shell 40 is not limited to four, and the number of card blocks 21 on the second side plate 20 of the upper shell 30 and the second side plate 20 of the lower shell 40 is not limited to four, for example, one, two or other numbers are also possible.

[0032] Preferably, the upper shell 30 is provided with a plurality of first cavities 31 at intervals, and the lower shell 40 is provided with second cavities 41 that are the same in number as the first cavities 31 and are respectively aligned with the first cavities 31 one by one, and the first cavities 31 and the second cavities 41 are arranged in a plurality of rows and columns, and each first cavity 31 is combined with a second cavity 41 located directly below it to form a receiving cavity. In this design, by providing the first cavity 31 on the upper shell 30 and the second cavity 41 on the lower shell 40, the first cavity 31 and the second cavity 41 are combined to form a receiving cavity, which is conducive to placing the battery cell into the receiving cavity. At the same time, since the first cavities 31 and the second cavities 41 are arranged at intervals, the receiving cavity formed by the combination of the first cavity 31 and the second cavity 41 is also independent of each other.

[0033] Preferably, the cross-sectional area of ​​the top of the first cavity 31 is smaller than the cross-sectional area of ​​the bottom of the first cavity 31, and the cross-sectional shape of the top of the first cavity 31 is circular and the cross-sectional shape of the bottom is square, and the cross-sectional area of ​​the top of the second cavity 41 is larger than the cross-sectional area of ​​the bottom of the second cavity 41, and the cross-sectional shape of the top of the second cavity 41 is square and the cross-sectional shape of the bottom is circular. In this design, by setting the top of the first cavity 31 and the bottom of the second cavity 41 as circular holes, and the bottom of the first cavity 31 and the top of the second cavity 41 as square holes, the circular holes can fix the battery cells and prevent the battery cells from shaking in the receiving cavity, and the area of ​​the square hole is larger than the area of ​​the circular hole. Therefore, when the battery cells are received in the receiving cavity, a gap will be formed with the side wall in the middle of the receiving cavity, which is beneficial to the heat dissipation of the battery cells, thereby increasing the service life of the battery cells.

[0034] Preferably, a plurality of positioning posts 32 extending upward are provided at intervals on the top of the upper shell 30, and a positioning hole 42 is provided at the bottom of the lower shell 40, which is arranged in alignment with the positioning posts 32 and is used to cooperate with the positioning posts 32 of another upper shell 30. In this design, by providing the positioning posts 32 at the top of the upper shell 30 and providing the positioning holes 42 at the bottom of the lower shell 40, the positioning holes 42 can be inserted into the positioning posts 32 of another upper shell 30, so that the battery module housing 100 can be stacked in the longitudinal direction, making it more flexible during use. Specifically, in this embodiment, there are two positioning posts 32, which enhance the stability between the battery module housings 100. Of course, in specific applications, the number of positioning posts 32 is not limited to two, for example, one or more can also be used.

[0035] Preferably, in this embodiment, a nut for installing a battery management system is provided in each positioning column 32, and the battery management system can be installed on the positioning column 32 by the cooperation of the bolt and the nut. This design method can prevent overcharging or overdischarging of the battery module by setting up the battery management system, thereby improving the reliability of the product.

[0036] Preferably, the battery module housing 100 is also provided with a mounting hole 33 for mounting the inverter board. In this design, by providing the mounting hole 33 for mounting the inverter board on the upper housing 30, the battery module can convert low-voltage direct current into 220V alternating current.

[0037] Preferably, the battery module housing 100 further includes a sleeve 60 and a screw 70. The sleeve 60 is detachably mounted in the mounting hole 33. The screw 70 passes through the inverter board and is connected to the sleeve 60 to fix the inverter board on the sleeve 60. In this design, the screw 70 is connected to the sleeve 60 in a simple manner, which is conducive to the installation of the inverter board. At the same time, since the sleeve 60 is detachably mounted in the mounting hole 33, when multiple battery module housings 100 are assembled longitudinally, the redundant sleeves 60 can be removed.

[0038] Preferably, a plurality of protrusions 43 for engaging with the connection holes on the nickel strip are provided at intervals on the top of the upper shell 30 and the bottom of the lower shell 40. In this design, by providing the protrusions 43 on the top of the upper shell 30 and the bottom of the lower shell 40, the nickel strip can electrically connect multiple cells together to obtain greater electrical energy, and a connection hole matching the structure of the protrusion 43 is provided on the nickel strip. Through the cooperation between the protrusion 43 and the connection hole, the nickel strip is conveniently fixed to the battery module housing 100. Specifically, in this embodiment, the protrusion 43 is square. It can be understood that the shape of the protrusion 43 is not limited to a square, for example, a round or oval shape is also possible.

[0039] Preferably, in this embodiment, the positioning column 32 is disposed on the protrusion 43, and the corners of the square protrusion 43 extend to the top or bottom of the receiving cavity, thereby preventing the battery cell from falling out of the receiving cavity.

[0040] Preferably, a mounting plate 50 for mounting the battery module housing 100 to an external device is provided on the first side plate 10 and / or the second side plate 20, and a through hole 51 for fasteners to pass through is provided on the mounting plate 50. Specifically, in the present embodiment, the first side plates 10 of the upper shell 30 and the lower shell 40 and the second side plates 20 of the upper shell 30 and the lower shell 40 are provided with mounting plates 50, so that the stability between the battery module housing 100 and the external device is enhanced. At the same time, the mounting plate 50 is detachably connected to the first side plate 10 and the second side plate 20. When multiple battery module housings 100 are horizontally spliced, only the mounting plates 50 need to be provided on the first side plates 10 and the second side plates 20 located at the outermost sides, and the redundant ones can be removed.

[0041] A battery module provided by an embodiment of the present invention includes a battery cell assembly, a nickel strip assembly, and at least one battery module housing 100 as described above, wherein the battery cell assembly includes a plurality of battery cells, and the battery cells are accommodated in the accommodation cavity of the battery module housing 100, and the nickel strip assembly is fixed to the top and bottom of the battery module housing 100 and is electrically connected to the battery cells. Since the battery module uses the above-mentioned battery module housing 100, the battery module has the characteristic of being able to flexibly control the number of battery cells, thereby controlling the capacity of the battery module. Specifically, in this embodiment, the battery cell is preferably a lithium battery cell with high capacity, long life, and green environmental protection.

[0042] The beneficial effects of the present invention are as follows: by cooperating between the card slot 11 and the card block 21 on another battery module housing 100, the battery module housing 100 can be spliced ​​in the horizontal direction, and by cooperating between the positioning column 32 and the positioning hole 42 on another battery module housing 100, the battery module housing 100 can be spliced ​​in the vertical direction, that is, the number of battery cells can be flexibly controlled, so that the capacity of the battery module can be flexibly controlled according to actual needs.

[0043] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A battery module housing, characterized in that: A first side plate and a second side plate are arranged opposite to each other at intervals, a plurality of accommodating cavities for accommodating battery cells are arranged between the first side plate and the second side plate, a plurality of card slots are arranged at intervals on the outer side of the first side plate, and a card block is arranged on the outer side of the second side plate and is used to engage with the card slot of another battery module housing; Each of the clamping blocks comprises a connecting portion and a clamping portion, the two opposite sides of the connecting portion are respectively connected to the second side plate and the clamping portion, a side of the clamping portion close to the second side plate is provided with an inclined surface inclined relative to the second side plate, and the shape of the clamping slot is adapted to the shape of the clamping block; The battery module housing comprises an upper shell and a lower shell connected to the bottom of the upper shell by screws, the first side plate of the upper shell and / or the first side plate of the lower shell are provided with a plurality of the card slots, and the second side plate of the upper shell and / or the second side plate of the lower shell are provided with a plurality of the card blocks in an aligned manner; The upper shell is provided with a plurality of first cavities at intervals, and the lower shell is provided with second cavities whose number is the same as the number of the first cavities and which are respectively aligned with the first cavities one by one, and the first cavities and the second cavities are arranged in a plurality of rows and columns, and each first cavity and a second cavity located directly below it are combined to form the receiving cavity; The cross-sectional area of ​​the top of the first cavity is smaller than the cross-sectional area of ​​the bottom of the first cavity, and the cross-sectional shape of the top of the first cavity is circular, and the cross-sectional shape of the bottom is square; the cross-sectional area of ​​the top of the second cavity is larger than the cross-sectional area of ​​the bottom of the second cavity, and the cross-sectional shape of the top of the second cavity is square, and the cross-sectional shape of the bottom is circular.

2. The battery module housing according to claim 1, characterized in that: The top of the upper shell is provided with a plurality of positioning posts extending upward at intervals, each of the positioning posts is provided with a nut for installing the battery management system, and the bottom of the lower shell is provided with a positioning hole which is arranged in alignment with the positioning post and is used to cooperate with the positioning post of the other upper shell; and / or, The top of the upper shell and the bottom of the lower shell are both provided with a plurality of protrusions at intervals for engaging with the connection holes on the nickel strip.

3. The battery module housing according to claim 1, characterized in that: The battery module housing is also provided with a mounting hole for mounting an inverter board.

4. The battery module housing according to claim 3, characterized in that: The battery module housing further comprises a sleeve and a screw, wherein the sleeve is detachably mounted in the mounting hole, and the screw passes through the inverter board and is connected to the sleeve to fix the inverter board on the sleeve.

5. The battery module housing according to claim 1, characterized in that: The first side plate and / or the second side plate is provided with a mounting plate for mounting the battery module housing to an external device, and the mounting plate is penetrated by a through hole for fasteners to pass through.

6. A battery module, characterized in that: It comprises a battery cell assembly, a nickel strip assembly and at least one battery module shell as described in any one of claims 1 to 5, wherein the battery cell assembly comprises a plurality of battery cells, the battery cells are accommodated in the accommodation cavity of the battery module shell, and the nickel strip assembly is fixed to the top and bottom of the battery module shell and is electrically connected to the battery cells.

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