CN216793896U - Battery module and energy storage device - Google Patents

Abstract

The utility model discloses a battery module and an energy storage device. The battery module comprises a box body and a battery cell module. The box body comprises a main body and an upper cover, the battery cell module is fixed by the main body, the upper cover is arranged at the top of the main body, and an insulated reinforcing rib is arranged on the lower surface of the upper cover; the battery cell module sets up in the box to fixed by the box, a plurality of electric core rows that the battery cell module set up including the interval, the top that the electric core was arranged is equipped with the connection piece, and the strengthening rib is located between the connection piece of two adjacent electric core rows. According to the battery module and the energy storage device, the insulated reinforcing ribs are arranged between the connecting sheets of the two adjacent battery cell rows, the two adjacent battery cell rows can be close to each other, the requirements on creepage distance and insulation clearance can be met while the miniaturization of the battery module is guaranteed, and the structural strength of the upper cover can be improved by the reinforcing ribs.

Description

Battery module and energy storage device

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery module and an energy storage device.

Background

In order to guarantee that the battery module has required energy storage capacity and power supply capacity, the battery module includes a plurality of electric core rows usually, and a plurality of electric core rows carry out the electricity through series connection, parallelly connected or the mode of connecting in series-parallel. Simultaneously, in order to make the battery module miniaturized, the interval between two adjacent electric core rows can not be too big. However, the creepage distance and the insulation gap between two adjacent battery cell rows need to meet certain requirements, otherwise, the system safety is easily affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a battery module and an energy storage device.

The battery module of the embodiment of the utility model comprises a box body and a battery cell module. The box includes main part and upper cover, the upper cover is established the top of main part, the lower surface of upper cover is equipped with insulating strengthening rib. The battery cell module is arranged in the main body and fixed by the main body, the battery cell module comprises a plurality of battery cell rows arranged at intervals, connecting pieces are arranged at the tops of the battery cell rows, and the reinforcing ribs are positioned between the adjacent two connecting pieces of the battery cell rows.

In some embodiments, the main body includes a frame, the battery cell module is located in a space surrounded by the frame, and two ends of the reinforcing rib respectively bear against a front end and a rear end of the frame.

In some embodiments, the upper cover includes a first side, a second side, a third side and a fourth side, the first side and the second side are opposite to each other, the third side and the fourth side are opposite to each other, the third side is connected with the first side and the second side, the fourth side is connected with the first side and the second side, the upper cover includes a surrounding portion which is arranged downwards on the second side, the third side and the fourth side, a first connecting plate extends outwards from the end of the surrounding portion, a second connecting plate corresponding to the first connecting plate is arranged at the top of the frame body, and the first connecting plate is fixedly connected with the second connecting plate.

In some embodiments, the first connecting plate has a first connecting hole, the second connecting plate has a second connecting hole, the first connecting hole corresponds to the second connecting hole, and the battery module includes a fastener, the fastener penetrates through the first connecting hole and the second connecting hole and fixedly connects the first connecting plate and the second connecting plate.

In some embodiments, one end of the reinforcing rib is connected to a first connection plate disposed at the second side.

In some embodiments, a first notch is formed at a connection portion of the first side and the third side, a second notch is formed at a connection portion of the first side and the fourth side, the main body includes a front panel disposed at a front end of the frame, and an upper cover portion disposed between the first notch and the second notch covers the front panel.

In some embodiments, the upper cover and the reinforcing rib are of a unitary structure.

In some embodiments, the length of the stiffener is substantially equal to the length of the upper cover.

The energy storage device of the embodiment of the utility model comprises the battery module of any one of the embodiments.

According to the battery module and the energy storage device, the insulated reinforcing ribs are arranged between the connecting sheets of the two adjacent battery cell rows, the two adjacent battery cell rows can be close to each other, the requirements on creepage distance and insulation clearance can be met while the miniaturization of the battery module is guaranteed, and the structural strength of the upper cover can be improved by the reinforcing ribs.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a battery module according to an embodiment of the present invention;

fig. 3 is a front view of the battery module according to the embodiment of the present invention, with a front panel omitted;

FIG. 4 is a side view of the upper cover of the embodiment of the present invention;

fig. 5 is a plan view of a battery module according to an embodiment of the present invention;

fig. 6 is a partial structural view of a battery module according to an embodiment of the present invention;

FIG. 7 is a top view of the upper cover of the embodiment of the present invention;

FIG. 8 is a bottom view of the upper cover of the embodiment of the present invention;

fig. 9 is a schematic view of the internal structure of the upper cover according to the embodiment of the present invention.

The main components are as follows:

the battery module 100, the case 10, the main body 11, the frame 111, the upper cover 12, the first side 121, the second side 122, the third side 123, the fourth side 124, the surrounding portion 125, the first connecting plate 126, the second connecting plate 127, the first connecting hole 1261, the second connecting hole 1271, the reinforcing rib 13, the first notch 141, the second notch 142, the front panel 15, the cell module 20, the cell row 21, and the connecting piece 22.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of illustrating the embodiments of the present invention and are not to be construed as limiting the embodiments of the present invention.

In embodiments of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the utility model, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Embodiments of the utility model may repeat reference numerals and/or letters in the various examples for simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and fig. 2 together, a battery module 100 according to an embodiment of the present invention includes a case 10 and a cell module 20. The box body 10 comprises a main body 11 and an upper cover 12, wherein the upper cover 12 is arranged at the top of the main body 11, and an insulated reinforcing rib 13 is arranged on the lower surface of the upper cover 12. Cell module 20 sets up in main part 11 to fixed by main part 11, a plurality of electric core rows 21 that cell module 20 set up including the interval, the top of electric core row 21 is equipped with connection piece 22, and strengthening rib 13 is located between the connection piece 22 of two adjacent electric core rows 21.

According to the battery module 100 of the embodiment of the utility model, the insulated reinforcing ribs 13 are arranged between the connecting pieces 22 of the two adjacent battery cell rows 21, so that the two adjacent battery cell rows 21 can be close to each other, the requirements on creepage distance and insulation clearance can be met while the miniaturization of the battery module 100 is ensured, and the structural strength of the upper cover 12 can be improved by the reinforcing ribs 13.

Specifically, the battery module 100 includes a case 10 and a cell module 20. The case 10 may be a metal case 10. The metal case 10 has an advantage of being strong and durable. In one embodiment, the box 10 may be a box in a rectangular parallelepiped shape, the box 10 in the rectangular parallelepiped shape includes a main body 11, and the main body 11 may be formed by connecting 4 metal plates. The 4 metal plates may be connected together by means of adhesion, screwing, snap-fit, latch, etc., and are not limited herein. Thus, the welding process can be reduced, the structure and process of the main body 11 are simple, and the production cost can be reduced. The battery cell module 20 is disposed in the main body 11. In some embodiments, 4 metal plates may be provided with openings that reduce the weight of the body 11. The main body 11 is used for accommodating and supporting the cell module 20.

The battery cell module 20 includes a plurality of battery cell rows 21 arranged at intervals, and each battery cell row 21 may include a plurality of battery cells. A plurality of cells may be connected by a plurality of tabs 22, and the plurality of cells may be secured to the case 10 indirectly or directly. The top of the cell row 21 is provided with a connecting piece 22, and the reinforcing rib 13 is located between the connecting pieces 22 of two adjacent cell rows 21.

In some embodiments, the reinforcing rib 13 may be provided with a hole, and the hole may avoid the connecting sheet 22 at the end between the 2 battery cell rows 21, so as to ensure that the reinforcing rib 13 is smoothly inserted between the 2 battery cell rows 21. In some embodiments, the gap between the 2 cell rows 21 may be slightly larger than the thickness of the reinforcing ribs 13, which may facilitate the insertion of the reinforcing ribs 13 between the 2 cell rows 21. Under the long-time condition of using of battery core module 20, the battery core module 20 may take place the inflation, and the clearance between the row 21 of battery cores slightly is greater than the thickness of strengthening rib 13 and can avoid leading to the condition that strengthening rib 13 is difficult to extract because battery core module 20 takes place the inflation.

In one embodiment, the battery cell module 20 includes 2 battery cell rows 21 arranged at intervals, each battery cell row 21 includes 12 battery cells, the 12 battery cells are connected by a plurality of connecting pieces 22, and the connecting pieces 22 are located at the top of the battery cell rows 21. The tail cells of the 2 cell rows 21 arranged at intervals can also be connected by using the connecting pieces 22, so that the series connection and the parallel connection of the cell modules 20 can be realized. After the cell module 20 is placed in the box 10, the upper cover 13 may be connected to the main body 12, and the reinforcing rib 13 is located between the connecting pieces 22 of two adjacent cell rows 21. The reinforcing ribs 13 are made of an insulating material, and thus the reinforcing ribs 13 have an insulating effect. After main part 11 and 12 cooperation installations of upper cover, strengthening rib 13 can insert between 2 electricity core rows 21, can guarantee the insulating requirement between 2 electricity core rows 21, can further guarantee battery module 100's safety in utilization, strengthening rib 13 can also increase the structural strength of upper cover 12 moreover.

It should be noted that, referring to fig. 3, the battery module 100 may include 2 output connectors, and the 2 output connectors are a positive output connector and a negative output connector respectively. 2 output pole connectors are connected respectively to electric core module 20. In the case where the battery module 100 is a small-sized battery module, the distance of the 2 output pole connectors is inevitably set to be short in order to save electrical clearance. However, this results in insufficient creepage and insulation clearance, and the safety of the battery module 100 is easily affected. The lower surface of upper cover 12 of this application embodiment is equipped with insulating strengthening rib 13, and strengthening rib 13 can separate 2 output pole connectors, forms the insulation protection for 2 output pole connectors, guarantees battery module 100's safety in utilization.

Referring to fig. 1 to 4, in some embodiments, the main body 11 includes a frame 111, the cell module 20 is located in a space surrounded by the frame 111, and two ends of the stiffener 13 respectively abut against a front end and a rear end of the frame 111.

Specifically, the main body 11 includes a frame 111, and the frame 111 may be a metal frame, which has the advantage of being strong and durable. In one embodiment, the frame 111 may include a front end, a rear end, a left sidewall, and a right sidewall. The front end, the rear end, the left side wall and the right side wall are made of metal materials and can be connected by screwing, clamping, inserting pins and the like to form the frame body 111. The frame 111 includes a front end and a rear end, and both ends of the reinforcing rib 13 respectively abut against the front end and the rear end. Thus, the ribs 13 are supported by the front and rear ends of the frame 111, thereby enhancing the load-bearing capacity of the upper cover 13. The strengthening rib 13 provides effectual enhancement and support, can avoid under the circumstances that a plurality of battery module 100 piled up, the battery module of top bends, presses the upper cover 12 of the below that collapses, avoids colliding with the electric core module of below. The reinforcing rib 13 is supported by the front end of the frame 111, and can separate 2 output electrode connectors of the battery module 100, so that the 2 output electrode connectors form insulation protection, and the use safety of the battery module is ensured.

Referring to fig. 6, 7 and 8, in some embodiments, the upper cover 12 includes a first side 121, a second side 122, a third side 123 and a fourth side 124, the first side 121 and the second side 122 are opposite to each other, the third side 123 and the fourth side 124 are opposite to each other, the third side 123 connects the first side 121 and the second side 122, the fourth side 124 connects the first side 121 and the second side 122, the upper cover 12 includes a surrounding portion 125 disposed downward on the second side 122, the third side 123 and the fourth side 124, a first connecting plate 126 extends outward from a terminal of the surrounding portion 125, a second connecting plate 127 corresponding to the first connecting plate 126 is disposed on a top of the frame 111, and the first connecting plate 126 is fixedly connected to the second connecting plate 127.

Specifically, the upper cover 12 includes 4 sides. The first side 121 and the second side 122 are opposite to each other, the extending directions of the first side 121 and the second side 122 are the same, and may be a first direction a-a, and the extending directions of the first side 121 and the second side 122 are the same as the width direction of the main body 11, and are both the first direction a-a. The third side 123 and the fourth side 124 are disposed opposite to each other, the third side 123 and the fourth side 124 extend in the same direction, which may be a second direction B-B, and the third side 123 and the fourth side 124 extend in the same direction as the length direction of the main body 11, which is the second direction B-B. And the first direction a-a is spatially perpendicular to the second direction B-B. The length of the first side 121 is less than that of the second side 122, and the length of the third side 123 is the same as that of the fourth side 124. The upper cover 12 is horizontally disposed, and the surrounding portion 125 connects the second side 122, the third side 123, and the fourth side 124, and extends in a vertically downward direction. The height of the surrounding portion 125 may be the same as the height of the reinforcing rib 13, and the surrounding portion 125 having the height may be used to accommodate a part of the cell module 20, thereby improving the utilization rate of the space and ensuring the miniaturization of the battery module 100. The end of the surrounding portion 125 extends outward to form a first connecting plate 126, the frame 111 is provided with a second connecting plate 127, and the first connecting plate 126 and the second connecting plate 127 are spatially parallel to the upper surface of the upper cover 12. The first connecting plate 126 is fixedly connected with the second connecting plate 127, and the widths of the first connecting plate 126 and the second connecting plate 127 may be the same or different, which is not limited herein.

Referring to fig. 2, 5 to 9, in some embodiments, the first connecting plate 126 is formed with a first connecting hole 1261, the second connecting plate 127 is formed with a second connecting hole 1271, the first connecting hole 1261 corresponds to the second connecting hole 1271, and the battery module 100 includes a fastener, which is inserted through the first connecting hole 1261 and the second connecting hole 1271 to fixedly connect the first connecting plate 126 and the second connecting plate 127.

Specifically, the first connecting plate 126 defines a first connecting hole 1261, and the second connecting plate 127 defines a second connecting hole 1271. The number of the first connection holes 1261 and the second connection holes 1271 may be the same, and in the case that the upper cover 12 is fittingly installed with the main body 11, the first connection plate 126 abuts against the second connection plate 127, and the first connection holes 1261 correspond to the second connection holes 1271. The first and second connection holes 1261 and 1271 may be circular holes, elliptical holes, etc., which are not limited herein. The first connection hole 1261 and the second connection hole 1271 may have the same or different hole diameters, and are not limited herein. The first connection hole 1261 and the second connection hole 1271 may have an aperture size such that a fastener can continuously pass through the first connection hole 1261 and the second connection hole 1271. Therefore, the first connecting plate 126 and the second connecting plate 127 can be connected by fasteners through the first connecting hole 1261 and the second connecting hole 1271 by fasteners.

It is worth mentioning that the fastener may include a screw nut, a pin, a welding member, etc., which are not limited herein. In one embodiment, the fastener may include a screw and nut, and the screw may be continuously inserted through the first connecting hole 1261 and the second connecting hole 1271 and then fastened by the nut. So, use the screw nut can avoid welding process, under the circumstances of electric core module 20 maintenance, change, can dismantle the screw nut, dismantle main part 11 and upper cover 12. Be convenient for maintenance, change of electric core module 20 can improve and use the impression.

Referring again to fig. 9, in some embodiments, one end of the stiffener 13 is connected to the first connecting plate 126 disposed at the second side 122.

Specifically, one end of the reinforcing rib 13 is disposed at the second lateral side 122, and one end of the reinforcing rib 13 is connected to the first connecting plate 126. The reinforcing rib 13 may be integrally formed with the first connecting plate 126, and one end of the reinforcing rib 13 is connected to the first connecting plate 126 disposed at the second side 122, which may increase the structural strength of the upper cover 12. In some embodiments, the bottom of the stiffener 13 and the bottom of the first connecting plate 126 may be at the same horizontal plane, so that when the upper cover 12 is placed on a desktop, a bottom surface, or the like, the stiffener 13 does not protrude out of the first connecting plate 126, and the stiffener 13 is prevented from being placed obliquely, so that an external force is applied to the stiffener 13, and deformation of the stiffener 13 is avoided.

Referring to fig. 2 and 7, in some embodiments, a first notch 141 is formed at a connection portion of the first side 121 and the third side 123, a second notch 142 is formed at a connection portion of the first side 121 and the fourth side 124, the main body 11 includes a front panel 15 disposed at a front end of the frame 111, and the upper cover 12 disposed between the first notch 141 and the second notch 142 partially covers the front panel 15.

Specifically, the length of the first side 121 is smaller than that of the second side 122, and the length of the third side 123 is the same as that of the fourth side 124. The first notch 141 is disposed at a connection position of the first side 121 and the third side 123, and the second notch 142 is disposed at a connection position of the first side 121 and the fourth side 124. The first notch 141 and the second notch 142 may have the same shape and size.

The main body 11 includes the front panel 15 disposed at the front end of the frame 111, the front panel 15 is provided with a protruding area which is installed in cooperation with the first notch 141 and the second notch 142, and under the condition that the front panel 15 is installed on the upper cover 12, the upper cover 12 partially covers the front panel 15, that is, the front panel 15 can be partially embedded into the upper cover 12, so that the space utilization rate can be improved, and the miniaturization of the battery module 100 can be ensured. And the regional protrusion that lies in between first breach 141 and the second breach 142 in upper cover 12 sets up, and length is compared in electric core module 20 long, can avoid battery module 100 under the condition that stacks, and the comdenstion water that top battery module 100 produced drips into electric core module 20 department of below battery module 100, so can protect electric core module 20 effectively, extension electric core module 20's life. It is worth mentioning that, a plurality of interfaces and control knobs and the like can be arranged on the front panel 15, and the front panel 15 can also be provided with a battery management system which is connected with the battery cell module 20 for ensuring the use safety of the battery cell module 20.

In some embodiments, the cover 12 is of unitary construction with the ribs 13.

Specifically, the upper cover 12 and the reinforcing rib 13 are of an integral structure. The upper cover 12 is of a plastics material and the ribs 13 are also of a plastics material. In this manner, the integral structure of the upper cover 12 and the reinforcing ribs 13 can be formed by an injection molding process. It should be noted that the upper cover 12 and the reinforcing rib 13 are integrated into a single structure, and the manner of forming the integrated structure includes, but is not limited to, a mold injection molding manner.

In one embodiment, the material of the upper cover 12 may be an insulating rubber material, the lower surface of the upper cover 12 is provided with a reinforcing rib 13 made of the same insulating material, and the upper cover 12 and the reinforcing rib 13 may be integrally formed by a mold, so that the production may be easy.

In some embodiments, the length of the stiffener 13 is substantially equal to the length of the upper cover 12.

Specifically, the length of the reinforcing rib 13 is substantially equal to the length of the upper cover 12, so that the reinforcing rib 13 is prevented from being protruded, and in the case that the reinforcing rib 13 is protruded, the protruded portion is easily deformed by the external force. The length of the reinforcing rib 13 is substantially equal to the length of the upper cover 12, so that two ends of the reinforcing rib 13 can be respectively supported at the front end and the rear end of the frame 111, and the bearing capacity of the upper cover 12 is improved. Meanwhile, the reinforcing ribs 13 can also separate 2 output pole connectors of the battery module 100, so that insulation protection is formed for the 2 output pole connectors.

The embodiment of the utility model also discloses an energy storage device, which comprises the battery module 100 of any one of the above embodiments.

In the energy storage device according to the embodiment of the utility model, the insulating reinforcing ribs 13 are arranged between the connecting pieces 22 of the two adjacent battery cell rows 21, so that the two adjacent battery cell rows 21 can be close to each other, the requirements on creepage distance and insulating gap can be met while the miniaturization of the battery module 100 is ensured, and the structural strength of the upper cover 12 can be improved by the reinforcing ribs 13.

It is worth mentioning that the energy storage device may include a plurality of battery modules 100 and a cluster frame or a bracket. That is, in some embodiments, the number of the battery modules 100 in the energy storage device may be 1, 2, 3, 4, or more than 4, which is not limited herein. In one embodiment, the number of the battery modules 100 in the energy storage device may be 4, the 4 battery modules 100 are arranged in a row in the vertical direction and placed on a cluster frame or a bracket, and the battery modules 100 may be connected in series or in parallel, which is not limited herein. The energy storage device formed by the plurality of battery modules 100 has a stronger energy storage effect and can meet the use requirements of users. The energy storage device can be made into a household energy storage cabinet or a small container.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (9)

1. A battery module, comprising:

the box body comprises a main body and an upper cover, the upper cover is arranged at the top of the main body, and the lower surface of the upper cover is provided with an insulated reinforcing rib;

the battery cell module is arranged in the main body and fixed by the main body, the battery cell module comprises a plurality of battery cell rows arranged at intervals, connecting pieces are arranged at the tops of the battery cell rows, and the reinforcing ribs are positioned between the adjacent two connecting pieces of the battery cell rows.

2. The battery module according to claim 1, wherein the main body includes a frame, the cell module is located in a space surrounded by the frame, and two ends of the reinforcing rib respectively bear against a front end and a rear end of the frame.

3. The battery module according to claim 2, wherein the upper cover comprises a first side, a second side, a third side, and a fourth side, the first side and the second side face away from each other, the third side and the fourth side face away from each other, the third side connects the first side and the second side, and the fourth side connects the first side and the second side,

the upper cover is including setting up downwards the second side the third side with the portion of encirclement of fourth side, the terminal outside extension of portion of encirclement has first connecting plate, the top of framework be equipped with the second connecting plate that first connecting plate corresponds, first connecting plate with second connecting plate fixed connection.

4. The battery module as claimed in claim 3, wherein the first connection plate is formed with a first connection hole, the second connection plate is formed with a second connection hole, the first connection hole corresponds to the second connection hole, and the battery module includes a fastener passing through the first connection hole and the second connection hole and fixedly connecting the first connection plate and the second connection plate.

5. The battery module according to claim 3, wherein one end of the reinforcing rib is connected to a first connection plate provided at the second side.

6. The battery module according to claim 3, wherein a first notch is formed at a connection point of the first side and the third side, a second notch is formed at a connection point of the first side and the fourth side, the main body includes a front panel disposed at a front end of the frame, and an upper cover portion disposed between the first notch and the second notch covers the front panel.

7. The battery module according to claim 1, wherein the upper cover and the reinforcing ribs are of an integral structure.

8. The battery module according to claim 1, wherein the reinforcing rib has a length substantially equal to that of the upper cover.

9. An energy storage device, characterized by comprising the battery module according to any one of claims 1 to 8.

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