Lithium battery module with hidden fixing structure and energy storage device

Abstract

The utility model provides a lithium battery module with a hidden fixing structure and an energy storage device. The lithium battery module with the hidden fixing structure comprises at least two battery boxes, a connecting piece and at least two baffles, the battery boxes are arranged in a stacked mode, each battery box is provided with a hidden groove, every two adjacent hidden grooves are communicated in sequence, the connecting piece is partially located in one hidden groove, and the baffle is located in the other hidden groove. One part of the connecting piece is located in one hidden groove, the other part of the connecting piece is located in the other hidden groove, so that the connecting piece is connected with the two adjacent battery boxes, each battery box is provided with a connector in the hidden groove, every two adjacent connectors are connected through a wire, the baffles and the hidden grooves are arranged in a one-to-one correspondence mode, and the baffles and the hidden grooves are arranged in a one-to-one correspondence mode. And the baffle plate covers the hidden groove and is detachably connected with the battery box. And the structures such as the connecting sheets and the connectors are all shielded by the baffles, so that the overall structure of the battery module is tidier, and the safety performance of the battery module is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of energy storage batteries, and in particular to a lithium battery module and an energy storage device with a hidden fixing structure. Background Art

[0002] Energy storage batteries are battery systems used to store electrical energy and are widely used in power system backup power, emergency lighting, and outdoor energy storage. To increase the storage capacity of energy storage batteries, multiple battery boxes are typically connected together. Each box contains battery cells, and the battery cells within each box are electrically connected to increase the battery's storage capacity.

[0003] To facilitate assembly and disassembly of the battery box, a screw or clamping structure is usually provided on the outside of the battery box to secure the battery box. The battery cells in each battery box are then electrically connected through wires or connectors. For example, Chinese patent application number CN202310978046.X discloses a stacking connection structure for power storage battery boxes. The two connector holders and two wire ties respectively accommodate and clamp the two connectors and wiring protruding from the outside of the energy storage battery box.

[0004] However, protruding electrical terminals or fixing structures on the outside of the battery are not conducive to the flat design of the energy storage device. In addition, protruding electrical connection structures such as electrical terminals on the outside pose certain risks. When encountering rainy weather, users may easily suffer electric shock accidents when accidentally touching the external electrical terminals, thereby reducing the safety performance of the energy storage device.

[0005] Therefore, there is an urgent need for an energy storage device with hidden connection and fixation and high safety performance. Utility Model Content

[0006] The purpose of the present disclosure is to overcome the shortcomings of the prior art and provide a lithium battery module and energy storage device with a hidden connection and fixation structure and high safety performance.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A lithium battery module with a hidden fixing structure, comprising:

[0009] At least two battery boxes and connecting pieces, the battery boxes are stacked,

[0010] The lithium battery module also includes at least two baffles, each battery box is provided with a hidden slot, two adjacent hidden slots are connected in sequence, each connecting piece corresponds to two adjacent battery boxes, part of the connecting piece is located in one of the hidden slots, and the other part of the connecting piece is located in another adjacent hidden slot, so that the connecting piece is respectively connected to the two adjacent battery boxes, each battery box is provided with a connecting head in the hidden slot, and two adjacent connecting heads are connected by a wire, the baffles are arranged in a one-to-one correspondence with the hidden slots, and the baffle cover is provided in the hidden slot and is detachably connected to the battery box.

[0011] In one embodiment, the battery box is further provided with an embedding groove, which is communicated with the hidden groove. The baffle is located in the embedding groove and connected to the battery box so that the baffle is flush with the side of the battery box.

[0012] In one embodiment, the baffle is provided with a first connection hole, and the wall of the embedding groove is provided with a second connection hole. The first connection hole and the second connection hole are used for fasteners to pass through sequentially to fix the baffle to the battery box.

[0013] In one embodiment, there are multiple first connection holes, and there are multiple second connection holes, and the first connection holes and the second connection holes are arranged in a one-to-one correspondence.

[0014] In one embodiment, the connecting piece includes a first connecting portion and a second connecting portion connected to each other, the first connecting portion is provided with a first screw hole, the second connecting portion is provided with a second screw hole, and a third screw hole is provided on the groove wall of the hidden groove, the first screw hole is arranged corresponding to the third screw hole of one of the battery boxes, and the second screw hole is arranged corresponding to the third screw hole of the other battery box.

[0015] In one embodiment, the third screw hole is located on the side wall of the hidden groove.

[0016] In one embodiment, the first connecting portion and the second connecting portion are an integrally formed structure.

[0017] In one embodiment, there are two connecting pieces, and the two connecting pieces are arranged opposite to each other.

[0018] In one embodiment, the connecting piece is rectangular.

[0019] An energy storage device comprises the lithium battery module with a hidden fixing structure as described in any one of the above embodiments.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] The above-mentioned lithium battery module with a hidden fixing structure has a hidden groove in the battery box, and two adjacent hidden grooves are connected in sequence. The connecting pieces are respectively located in the two adjacent hidden grooves, and the connecting pieces are respectively connected to the two adjacent battery boxes to fix the two adjacent battery boxes. The connecting heads of the battery boxes are arranged in the hidden grooves, and the connecting heads of the two adjacent battery boxes are connected by wires. The baffle cover is arranged in the hidden groove, so that structures such as the connecting pieces and the connecting heads are all blocked by the baffle, making the overall structure of the battery module more tidy, and avoiding the connection structures such as the connecting heads being exposed on the outside of the battery box, thereby improving the safety performance of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a structural diagram of a lithium battery module with a hidden fixing structure according to an embodiment;

[0024] Figure 2 for Figure 1 Another structural schematic diagram of a lithium battery module with a hidden fixing structure is shown;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the connecting piece shown. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. 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. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] The present disclosure provides a lithium battery module with a hidden fixed structure, comprising at least two battery boxes, a connecting piece and at least two baffles, the battery boxes are stacked, each of the battery boxes is provided with a hidden slot, two adjacent hidden slots are connected in sequence, each connecting piece corresponds to two adjacent battery boxes, a portion of the connecting piece is located in one of the hidden slots, and another portion of the connecting piece is located in another adjacent hidden slot, so that the connecting piece is respectively connected to the two adjacent battery boxes, each of the battery boxes is provided with a connecting head in the hidden slot, and two adjacent connecting heads are connected by a wire, the baffles are arranged in a one-to-one correspondence with the hidden slots, and the baffle cover is provided in the hidden slot and is detachably connected to the battery box.

[0030] The above-mentioned lithium battery module with a hidden fixing structure has a hidden groove in the battery box, and two adjacent hidden grooves are connected in sequence. The connecting pieces are respectively located in the two adjacent hidden grooves, and the connecting pieces are respectively connected to the two adjacent battery boxes to fix the two adjacent battery boxes. The connecting heads of the battery boxes are arranged in the hidden grooves, and the connecting heads of the two adjacent battery boxes are connected by wires. The baffle cover is arranged in the hidden groove, so that structures such as the connecting pieces and the connecting heads are all blocked by the baffle, making the overall structure of the battery module more tidy, and avoiding the connection structures such as the connecting heads being exposed on the outside of the battery box, thereby improving the safety performance of the battery module.

[0031] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0032] like Figures 1 to 3As shown, a lithium battery module 10 with a hidden fixed structure in one embodiment includes at least two battery boxes 100, a connecting piece 200 and at least two baffles 300, the battery boxes 100 are stacked, each of the battery boxes 100 is provided with a hidden groove 110, and two adjacent hidden grooves 110 are connected in sequence, each of the connecting pieces 200 corresponds to two adjacent battery boxes 100, a portion of the connecting piece 200 is located in one of the hidden grooves 110, and another portion of the connecting piece 200 is located in another adjacent hidden groove 110, so that the connecting piece 200 is respectively connected to the two adjacent battery boxes 100, each of the battery boxes 100 is provided with a connecting head 120 in the hidden groove 110, and two adjacent connecting heads 120 are connected by a wire, the baffle 300 is arranged in a one-to-one correspondence with the hidden groove 110, and the baffle 300 is covered on the hidden groove 110 and is detachably connected to the battery box 100.

[0033] In this embodiment, multiple battery boxes 100 can be stacked according to power requirements, and two adjacent battery boxes 100 are connected by a connecting piece 200 to fix the two adjacent battery boxes 100. Part of the connecting piece 200 is located in one of the hidden grooves 110, and the other part is located in the other hidden groove 110. Each hidden groove 110 is provided with a connecting head 120. The two adjacent connecting heads 120 are electrically connected through a wire, thereby conducting the batteries in the battery box 100. The baffle 300 is arranged in a one-to-one correspondence with the hidden groove 110, and the baffle 300 is covered on the hidden groove 110 so that the baffle 300 covers structures such as the connecting piece 200 and the connecting head 120.

[0034] The above-mentioned lithium battery module 10 with a hidden fixing structure, the battery box 100 is provided with a hidden groove 110, two adjacent hidden grooves 110 are connected in sequence, the connecting pieces 200 are respectively located in the two adjacent hidden grooves 110, and the connecting pieces 200 are respectively connected to the two adjacent battery boxes 100 to fix the two adjacent battery boxes 100, the connecting head 120 of the battery box 100 is set in the hidden groove 110, and the connecting heads 120 of the two adjacent battery boxes 100 are connected by a wire, and the baffle 300 is covered in the hidden groove 110, so that structures such as the connecting piece 200 and the connecting head 120 are all covered by the baffle 300, making the overall structure of the battery module more tidy, and avoiding the connection structure such as the connecting head 120 from being exposed on the outside of the battery box 100, thereby improving the safety performance of the battery module.

[0035] like Figure 2As shown, in one embodiment, the battery box 100 further defines an embedding groove 130, which is connected to the hidden groove 110. The baffle 300 is located in the embedding groove 130 and connected to the battery box 100, so that the baffle 300 is flush with the side of the battery box 100. It can be understood that the baffle 300 is located in the embedding groove 130, so that the baffle 300 is flush with the side of the battery box 100, thereby making the overall structure of the battery module more flat.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the baffle 300 is provided with a first connection hole 310, and the wall of the embedding groove 130 is provided with a second connection hole 131. The first connection hole 310 and the second connection hole 131 are used for fasteners to pass through sequentially to secure the baffle 300 to the battery box 100. In this embodiment, the fasteners are screws, which secure the baffle 300 to the battery box 100, thereby achieving a detachable function and facilitating disassembly and assembly.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, there are multiple first connection holes 310 and multiple second connection holes 131, and the first connection holes 310 and the second connection holes 131 are arranged in a one-to-one correspondence. In this embodiment, the first connection holes 310 are evenly distributed on the baffle 300, and multiple screws are passed through the first connection holes 310 and the second connection holes 131 in a one-to-one correspondence, making the connection between the baffle 300 and the battery box 100 more stable.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the connecting piece 200 includes a first connecting portion 210 and a second connecting portion 220 connected to each other. The first connecting portion 210 is provided with a first screw hole 211, and the second connecting portion 220 is provided with a second screw hole 221. The wall of the hidden groove 110 is provided with a third screw hole 111. The first screw hole 211 is provided corresponding to the third screw hole 111 of one of the battery boxes 100, and the second screw hole 221 is provided corresponding to the third screw hole 111 of the other battery box 100. In this embodiment, one screw is passed through the first screw hole 211 and the third screw hole 111 of one of the battery boxes 100, and another screw is passed through the second screw hole 221 and the third screw hole 111 of the other battery box 100, so that the connecting piece 200 is screwed and fixed to the two adjacent battery boxes 100.

[0039] like Figure 2As shown, in one embodiment, the third screw hole 111 is located on the side wall of the hidden groove 110. In this embodiment, the third screw hole 111 is opened on the side wall of the hidden groove 110, and the connecting piece 200 is fixed to the side wall of the hidden groove 110 accordingly.

[0040] In another embodiment, the third screw hole 111 may also be located on the bottom wall of the hidden groove 110 , and the connecting piece 200 is fixed on the bottom wall of the hidden groove 110 accordingly.

[0041] In one embodiment, the first connection portion 210 and the second connection portion 220 are integrally formed. In this embodiment, the first connection portion 210 and the second connection portion 220 are integrally formed by stamping to increase the structural strength between the first connection portion 210 and the second connection portion 220.

[0042] In one embodiment, there are two connecting pieces 200 , which are disposed opposite to each other. It is understood that the connection and fixation by the two connecting pieces 200 can enhance the connection stability between the two adjacent battery boxes 100 .

[0043] like Figure 3 As shown, in one embodiment, the connecting piece 200 is rectangular to increase the contact area between the connecting piece 200 and two adjacent battery boxes 100. Of course, in other embodiments, the connecting piece 200 can also be in other shapes such as arc or circle.

[0044] The present application also provides an energy storage device, comprising the lithium battery module 10 with a hidden fixing structure as described in any of the above embodiments. The lithium battery module 10 with a hidden fixed structure includes at least two battery boxes 100, a connecting piece 200 and at least two baffles 300. The battery boxes 100 are stacked, and each battery box 100 is provided with a hidden groove 110. The two adjacent hidden grooves 110 are connected in sequence. Each connecting piece 200 corresponds to two adjacent battery boxes 100. Part of the connecting piece 200 is located in one of the hidden grooves 110, and the other part of the connecting piece 200 is located in the other adjacent hidden groove 110, so that the connecting piece 200 is respectively connected to the two adjacent battery boxes 100. Each battery box 100 is provided with a connecting head 120 in the hidden groove 110, and the two adjacent connecting heads 120 are connected by a wire. The baffle 300 is arranged in a one-to-one correspondence with the hidden groove 110. The baffle 300 covers the hidden groove 110 and is detachably connected to the battery box 100.

[0045] Compared with the prior art, the present disclosure has at least the following advantages:

[0046] The above-mentioned lithium battery module 10 with a hidden fixing structure, the battery box 100 is provided with a hidden groove 110, two adjacent hidden grooves 110 are connected in sequence, the connecting pieces 200 are respectively located in the two adjacent hidden grooves 110, and the connecting pieces 200 are respectively connected to the two adjacent battery boxes 100 to fix the two adjacent battery boxes 100, the connecting head 120 of the battery box 100 is set in the hidden groove 110, and the connecting heads 120 of the two adjacent battery boxes 100 are connected by a wire, and the baffle 300 is covered in the hidden groove 110, so that structures such as the connecting piece 200 and the connecting head 120 are all covered by the baffle 300, making the overall structure of the battery module more tidy, and avoiding the connection structure such as the connecting head 120 from being exposed on the outside of the battery box 100, thereby improving the safety performance of the battery module.

[0047] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A lithium battery module with a hidden fixing structure, comprising at least two battery boxes and a connecting piece, wherein the battery boxes are stacked, characterized in that: The lithium battery module also includes at least two baffles, each battery box is provided with a hidden slot, two adjacent hidden slots are connected in sequence, each connecting piece corresponds to two adjacent battery boxes, part of the connecting piece is located in one of the hidden slots, and the other part of the connecting piece is located in another adjacent hidden slot, so that the connecting piece is respectively connected to the two adjacent battery boxes, each battery box is provided with a connecting head in the hidden slot, and two adjacent connecting heads are connected by a wire, the baffles are arranged in a one-to-one correspondence with the hidden slots, and the baffle cover is provided in the hidden slot and is detachably connected to the battery box.

2. The lithium battery module with a hidden fixing structure according to claim 1, characterized in that: The battery box is further provided with an embedding groove, which is communicated with the hidden groove. The baffle is located in the embedding groove and connected to the battery box so that the baffle is flush with the side surface of the battery box.

3. The lithium battery module with a hidden fixing structure according to claim 2, characterized in that: The baffle is provided with a first connection hole, and the wall of the embedding groove is provided with a second connection hole. The first connection hole and the second connection hole are used for fasteners to pass through in sequence to fix the baffle to the battery box.

4. The lithium battery module with a hidden fixing structure according to claim 3, characterized in that: There are a plurality of the first connection holes, and a plurality of the second connection holes. The first connection holes and the second connection holes are arranged in a one-to-one correspondence.

5. The lithium battery module with a hidden fixing structure according to claim 1, characterized in that: The connecting piece includes a first connecting part and a second connecting part connected to each other, the first connecting part is provided with a first screw hole, the second connecting part is provided with a second screw hole, and a third screw hole is provided on the groove wall of the hidden groove. The first screw hole is arranged corresponding to the third screw hole of one of the battery boxes, and the second screw hole is arranged corresponding to the third screw hole of the other battery box.

6. The lithium battery module with a hidden fixing structure according to claim 5, characterized in that: The third screw hole is located on the side wall of the hidden groove.

7. The lithium battery module with a hidden fixing structure according to claim 5, characterized in that: The first connecting portion and the second connecting portion are an integrally formed structure.

8. The lithium battery module with a hidden fixing structure according to claim 1, characterized in that: There are two connecting pieces, and the two connecting pieces are arranged opposite to each other.

9. The lithium battery module with a hidden fixing structure according to claim 1, characterized in that: The connecting piece is rectangular.

10. An energy storage device, characterized in that: A lithium battery module with a hidden fixing structure comprising any one of claims 1 to 9.

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